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Author SHA1 Message Date
The Lua team
b9dde086db This is Lua 1.0. It was never publicly released. This code is a snapshot of
the status of Lua on 28 Jul 1993. It is distributed for historical curiosity
to celebrate 10 years of Lua and is hereby placed in the public domain.

There is no documentation, except the test programs. The manual for Lua 1.1
probably works for this version as well.

The source files for the lexer and parser have been lost: all that is left is
the output of lex and yacc. A grammar can be found inside y_tab.c in yyreds.

The code compiles and runs in RedHat 5.2 with gcc 2.7.2.3. It may not run in
newer systems, because it assumes that stdin and stdout are constants, though
ANSI C does not promise they are. If make fails, try using the fixed modules
provided in the "fixed" directory. To see the differences (which are really
quite minor), do "make diff".

To see Lua 1.0 in action, do "make test". (The last test raises an error on
purpose.)

Enjoy!

-- The Lua team, lua@tecgraf.puc-rio.br
2003-10-09 23:44:30 -03:00
80 changed files with 7032 additions and 18300 deletions

29
Makefile Normal file
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@@ -0,0 +1,29 @@
OBJS= hash.o inout.o lex_yy.o opcode.o table.o y_tab.o lua.o iolib.o mathlib.o strlib.o
CFLAGS= -O2 -I.
T= lua
all: $T
$T: $(OBJS)
$(CC) -o $@ $(OBJS) -lm
A=--------------------------------------------------------------------------
test: $T
@echo "$A"
./$T sort.lua main
@echo "$A"
./$T globals.lua | sort | column
@echo "$A"
./$T array.lua
@echo "$A"
./$T save.lua
@echo "$A"
./$T test.lua retorno_multiplo norma
clean:
rm -f $T $(OBJS) core core.*
diff:
diff . fixed | grep -v ^Only

22
README Normal file
View File

@@ -0,0 +1,22 @@
This is Lua 1.0. It was never publicly released. This code is a snapshot of
the status of Lua on 28 Jul 1993. It is distributed for historical curiosity
to celebrate 10 years of Lua and is hereby placed in the public domain.
There is no documentation, except the test programs. The manual for Lua 1.1
probably works for this version as well.
The source files for the lexer and parser have been lost: all that is left is
the output of lex and yacc. A grammar can be found inside y_tab.c in yyreds.
The code compiles and runs in RedHat 5.2 with gcc 2.7.2.3. It may not run in
newer systems, because it assumes that stdin and stdout are constants, though
ANSI C does not promise they are. If make fails, try using the fixed modules
provided in the "fixed" directory. To see the differences (which are really
quite minor), do "make diff".
To see Lua 1.0 in action, do "make test". (The last test raises an error on
purpose.)
Enjoy!
-- The Lua team, lua@tecgraf.puc-rio.br

15
array.lua Normal file
View File

@@ -0,0 +1,15 @@
$debug
a = @()
i=0
while i<10 do
a[i] = i*i
i=i+1
end
r,v = next(a,nil)
while r ~= nil do
print ("array["..r.."] = "..v)
r,v = next(a,r)
end

288
bugs
View File

@@ -1,288 +0,0 @@
** lua.stx / llex.c
Tue Dec 2 10:45:48 EDT 1997
>> BUG: "lastline" was not reset on function entry, so debug information
>> started only in the 2nd line of a function.
=================================================================
--- Version 3.1 alpha
** lua.c
Thu Jan 15 14:34:58 EDT 1998
>> must include "stdlib.h" (for "exit()").
** lbuiltin.c / lobject.h
Thu Jan 15 14:34:58 EDT 1998
>> MAX_WORD may be bigger than MAX_INT
(by lhf)
** llex.c
Mon Jan 19 18:17:18 EDT 1998
>> wrong line number (+1) in error report when file starts with "#..."
** lstrlib.c
Tue Jan 27 15:27:49 EDT 1998
>> formats like "%020d" were considered too big (3 digits); moreover,
>> some sistems limit printf to at most 500 chars, so we can limit sizes
>> to 2 digits (99).
** lapi.c
Tue Jan 27 17:12:36 EDT 1998
>> "lua_getstring" may create a new string, so should check GC
** lstring.c / ltable.c
Wed Jan 28 14:48:12 EDT 1998
>> tables can become full of "empty" slots, and keep growing without limits.
** lstrlib.c
Mon Mar 9 15:26:09 EST 1998
>> gsub('a', '(b?)%1*' ...) loops (because the capture is empty).
** lstrlib.c
Mon May 18 19:20:00 EST 1998
>> arguments for "format" 'x', 'X', 'o' and 'u' must be unsigned int.
=================================================================
--- Version 3.1
** liolib.c / lauxlib.c
Mon Sep 7 15:57:02 EST 1998
>> function "luaL_argerror" prints wrong argument number (from a user's point
of view) when functions have upvalues.
** lstrlib.c
Tue Nov 10 17:29:36 EDT 1998
>> gsub/strfind do not check whether captures are properly finished.
(by roberto/tomas)
** lbuiltin.c
Fri Dec 18 11:22:55 EDT 1998
>> "tonumber" goes crazy with negative numbers in other bases (not 10),
because "strtol" returns long, not unsigned long.
(by Visual C++)
** lstrlib.c
Mon Jan 4 10:41:40 EDT 1999
>> "format" does not check size of format item (such as "%00000...00000d").
** lapi.c
Wed Feb 3 14:40:21 EDT 1999
>> getlocal cannot return the local itself, since lua_isstring and
lua_isnumber can modify it.
** lstrlib.c
Thu Feb 4 17:08:50 EDT 1999
>> format "%s" may break limit of "sprintf" on some machines.
(by Marcelo Sales)
** lzio.c
Thu Mar 4 11:49:37 EST 1999
>> file stream cannot call fread after EOF.
(by lhf)
=================================================================
--- Version 3.2 (beta)
** lstrlib.c
Fri Apr 30 11:10:20 EST 1999
>> '$' at end of pattern was matching regular '$', too.
(by anna; since 2.5)
** lbuiltin.c
Fri May 21 17:15:11 EST 1999
>> foreach, foreachi, foreachvar points to function in stack when stack
can be reallocated.
(by tomas; since 3.2 beta)
** lparser.c
Wed Jun 16 10:32:46 EST 1999
>> cannot assign to unlimited variables, because it causes overflow in
the number of returns of a function.
(since 3.1)
=================================================================
--- Version 3.2
** lmathlib.c
Wed Aug 18 11:28:38 EST 1999
>> random(0) and random(x,0) are wrong (0 is read as no argument!).
(by Dave Bollinger; since 3.1)
** lparser.c
Thu Sep 2 10:07:20 EST 1999
>> in the (old) expression << ls->fs->f->consts[checkname(ls)] >>, checkname
could realloc f->consts.
(by Supratik Champati; since 3.2 beta)
** lobject.c / lbuiltin.c
Wed Sep 8 17:41:54 EST 1999
>> tonumber'e1' and tonumber(' ', x), for x!=10, gave 0 instead of nil.
(since 3.1)
** lstrlib.c
Thu Nov 11 14:36:30 EDT 1999
>> `strfind' does not handle \0 in plain search.
(by Jon Kleiser; since 3.1)
** lparser.c
Wed Dec 29 16:05:43 EDT 1999
>> return gives wrong line in debug information
(by lhf; since 3.2 [at least])
** ldo.c
Thu Dec 30 16:39:33 EDT 1999
>> cannot reopen stdin (for binary mode)
(by lhf & roberto; since 3.1)
** lapi.c
Thu Mar 2 09:41:53 EST 2000
>> lua_settable should check stack space (it could call a T.M.)
(by lhf & celes; since 3.2; it was already fixed by fixed stack)
** lparser.c
Mon Apr 3 09:59:06 EST 2000
>> '%' should be in expfollow
(by Edgar Toernig; since 3.1; it was already fixed)
** lbuiltin.c
Mon Apr 3 10:05:05 EST 2000
>> tostring() without arguments gives seg. fault.
(by Edgar Toernig; since 3.0)
=================================================================
--- Version 4.0 alpha
Tested with full test suites (as locked in Mon Apr 24 14:23:11 EST 2000)
in the following platforms:
* Linux - gcc, g++
* AIX - gcc
* Solaris - gcc, cc
* IRIX - cc, cc-purify
* Windows - Visual C++ (.c e .cpp, warning level=4)
** lstrlib.c
Tue May 2 15:27:58 EST 2000
>> `strfind' gets wrong subject length when there is an offset
(by Jon Kleiser; since 4.0a)
** lparser.c
Fri May 12 15:11:12 EST 2000
>> first element in a list constructor is not adjusted to one value
>> (e.g. «a = {gsub('a','a','')}»)
(by Tomas; since 4.0a)
** lparser.c
Wed May 24 14:50:16 EST 2000
>> record-constructor starting with an upvalue name gets an error
>> (e.g. «local a; function f() x = {a=1} end»)
(by Edgar Toernig; since 3.1)
** lparser.c
Tue Aug 29 15:56:05 EST 2000
>> error message for `for' uses `while'
(since 4.0a; already corrected)
** lgc.c
Tue Aug 29 15:57:41 EST 2000
>> gc tag method for nil could call line hook
(by ry; since ?)
=================================================================
--- Version 4.0 Beta
** liolib.c
Fri Sep 22 15:12:37 EST 2000
>> `read("*w")' should return nil at EOF
(by roberto; since 4.0b)
** lvm.c
Mon Sep 25 11:47:48 EST 2000
>> lua_gettable does not get key from stack top
(by Philip Yi; since 4.0b)
** lgc.c
Mon Sep 25 11:50:48 EST 2000
>> GC may crash when checking locked C closures
(by Philip Yi; since 4.0b)
** lapi.c
Wed Sep 27 09:50:19 EST 2000
>> lua_tag should return LUA_NOTAG for non-valid indices
(by Paul Hankin; since 4.0b)
** llex.h / llex.c / lparser.c
Wed Sep 27 13:39:45 EST 2000
>> parser overwrites semantic information when looking ahead
>> (e.g. «a = {print'foo'}»)
(by Edgar Toernig; since 4.0b, deriving from previous bug)
** liolib.c
Thu Oct 26 10:50:46 EDT 2000
>> in function `read_file', realloc() doesn't free the buffer if it can't
>> allocate new memory
(by Mauro Vezzosi; since 4.0b)
=================================================================
--- Version 4.0
** lparser.c
Wed Nov 29 09:51:44 EDT 2000
>> parser does not accept a `;' after a `return'
(by lhf; since 4.0b)
** liolib.c
Fri Dec 22 15:30:42 EDT 2000
>> when `read' fails it must return nil (and not no value)
(by cassino; since at least 3.1)
** lstring.c/lapi.c
Thu Feb 1 11:55:45 EDT 2001
>> lua_pushuserdata(L, NULL) is buggy
(by Edgar Toernig; since 4.0)
** ldo.c
Fri Feb 2 14:06:40 EDT 2001
>> «while 1 dostring[[print('hello\n')]] end» never reclaims memory
(by Andrew Paton; since 4.0b)
** lbaselib.c
Tue Feb 6 11:57:13 EDT 2001
>> ESC (which starts precompiled code) in C is \33, not \27
(by Edgar Toernig and lhf; since 4.0b)
** lparser.c
Tue Jul 10 16:59:18 EST 2001
>> error message for `%a' gave wrong line number
(by Leonardo Constantino; since 4.0)
** lbaselib.c
Fri Dec 21 15:21:05 EDT 2001
>> seg. fault when rawget/rawset get extra arguments
(by Eric Mauger; since 4.0b)
** lvm.c
Wed Jun 19 13:28:20 EST 2002
>> line hook gets wrong `ar'
(by Daniel C. Sinclair; since 4.0.b)
** ldo.c
Wed Jun 19 13:31:49 EST 2002
>> `protectedparser' may run GC, and then collect `filename'
>> (in function `parse_file')
(by Alex Bilyk; since 4.0)

402
fixed/iolib.c Normal file
View File

@@ -0,0 +1,402 @@
/*
** iolib.c
** Input/output library to LUA
**
** Waldemar Celes Filho
** TeCGraf - PUC-Rio
** 19 May 93
*/
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <ctype.h>
#ifdef __GNUC__
#include <floatingpoint.h>
#endif
#include "lua.h"
static FILE *in=NULL, *out=NULL;
/*
** Open a file to read.
** LUA interface:
** status = readfrom (filename)
** where:
** status = 1 -> success
** status = 0 -> error
*/
static void io_readfrom (void)
{
lua_Object o = lua_getparam (1);
if (o == NULL) /* restore standart input */
{
if (in != stdin)
{
fclose (in);
in = stdin;
}
lua_pushnumber (1);
}
else
{
if (!lua_isstring (o))
{
lua_error ("incorrect argument to function 'readfrom`");
lua_pushnumber (0);
}
else
{
FILE *fp = fopen (lua_getstring(o),"r");
if (fp == NULL)
{
lua_pushnumber (0);
}
else
{
if (in != stdin) fclose (in);
in = fp;
lua_pushnumber (1);
}
}
}
}
/*
** Open a file to write.
** LUA interface:
** status = writeto (filename)
** where:
** status = 1 -> success
** status = 0 -> error
*/
static void io_writeto (void)
{
lua_Object o = lua_getparam (1);
if (o == NULL) /* restore standart output */
{
if (out != stdout)
{
fclose (out);
out = stdout;
}
lua_pushnumber (1);
}
else
{
if (!lua_isstring (o))
{
lua_error ("incorrect argument to function 'writeto`");
lua_pushnumber (0);
}
else
{
FILE *fp = fopen (lua_getstring(o),"w");
if (fp == NULL)
{
lua_pushnumber (0);
}
else
{
if (out != stdout) fclose (out);
out = fp;
lua_pushnumber (1);
}
}
}
}
/*
** Read a variable. On error put nil on stack.
** LUA interface:
** variable = read ([format])
**
** O formato pode ter um dos seguintes especificadores:
**
** s ou S -> para string
** f ou F, g ou G, e ou E -> para reais
** i ou I -> para inteiros
**
** Estes especificadores podem vir seguidos de numero que representa
** o numero de campos a serem lidos.
*/
static void io_read (void)
{
lua_Object o = lua_getparam (1);
if (o == NULL) /* free format */
{
int c;
char s[256];
while (isspace(c=fgetc(in)))
;
if (c == '\"')
{
if (fscanf (in, "%[^\"]\"", s) != 1)
{
lua_pushnil ();
return;
}
}
else if (c == '\'')
{
if (fscanf (in, "%[^\']\'", s) != 1)
{
lua_pushnil ();
return;
}
}
else
{
char *ptr;
double d;
ungetc (c, in);
if (fscanf (in, "%s", s) != 1)
{
lua_pushnil ();
return;
}
d = strtod (s, &ptr);
if (!(*ptr))
{
lua_pushnumber (d);
return;
}
}
lua_pushstring (s);
return;
}
else /* formatted */
{
char *e = lua_getstring(o);
char t;
int m=0;
while (isspace(*e)) e++;
t = *e++;
while (isdigit(*e))
m = m*10 + (*e++ - '0');
if (m > 0)
{
char f[80];
char s[256];
sprintf (f, "%%%ds", m);
fscanf (in, f, s);
switch (tolower(t))
{
case 'i':
{
long int l;
sscanf (s, "%ld", &l);
lua_pushnumber(l);
}
break;
case 'f': case 'g': case 'e':
{
float f;
sscanf (s, "%f", &f);
lua_pushnumber(f);
}
break;
default:
lua_pushstring(s);
break;
}
}
else
{
switch (tolower(t))
{
case 'i':
{
long int l;
fscanf (in, "%ld", &l);
lua_pushnumber(l);
}
break;
case 'f': case 'g': case 'e':
{
float f;
fscanf (in, "%f", &f);
lua_pushnumber(f);
}
break;
default:
{
char s[256];
fscanf (in, "%s", s);
lua_pushstring(s);
}
break;
}
}
}
}
/*
** Write a variable. On error put 0 on stack, otherwise put 1.
** LUA interface:
** status = write (variable [,format])
**
** O formato pode ter um dos seguintes especificadores:
**
** s ou S -> para string
** f ou F, g ou G, e ou E -> para reais
** i ou I -> para inteiros
**
** Estes especificadores podem vir seguidos de:
**
** [?][m][.n]
**
** onde:
** ? -> indica justificacao
** < = esquerda
** | = centro
** > = direita (default)
** m -> numero maximo de campos (se exceder estoura)
** n -> indica precisao para
** reais -> numero de casas decimais
** inteiros -> numero minimo de digitos
** string -> nao se aplica
*/
static char *buildformat (char *e, lua_Object o)
{
static char buffer[512];
static char f[80];
char *string = &buffer[255];
char t, j='r';
int m=0, n=0, l;
while (isspace(*e)) e++;
t = *e++;
if (*e == '<' || *e == '|' || *e == '>') j = *e++;
while (isdigit(*e))
m = m*10 + (*e++ - '0');
e++; /* skip point */
while (isdigit(*e))
n = n*10 + (*e++ - '0');
sprintf(f,"%%");
if (j == '<' || j == '|') sprintf(strchr(f,0),"-");
if (m != 0) sprintf(strchr(f,0),"%d", m);
if (n != 0) sprintf(strchr(f,0),".%d", n);
sprintf(strchr(f,0), "%c", t);
switch (tolower(t))
{
case 'i': t = 'i';
sprintf (string, f, (long int)lua_getnumber(o));
break;
case 'f': case 'g': case 'e': t = 'f';
sprintf (string, f, (float)lua_getnumber(o));
break;
case 's': t = 's';
sprintf (string, f, lua_getstring(o));
break;
default: return "";
}
l = strlen(string);
if (m!=0 && l>m)
{
int i;
for (i=0; i<m; i++)
string[i] = '*';
string[i] = 0;
}
else if (m!=0 && j=='|')
{
int i=l-1;
while (isspace(string[i])) i--;
string -= (m-i) / 2;
i=0;
while (string[i]==0) string[i++] = ' ';
string[l] = 0;
}
return string;
}
static void io_write (void)
{
lua_Object o1 = lua_getparam (1);
lua_Object o2 = lua_getparam (2);
if (o1 == NULL) /* new line */
{
fprintf (out, "\n");
lua_pushnumber(1);
}
else if (o2 == NULL) /* free format */
{
int status=0;
if (lua_isnumber(o1))
status = fprintf (out, "%g", lua_getnumber(o1));
else if (lua_isstring(o1))
status = fprintf (out, "%s", lua_getstring(o1));
lua_pushnumber(status);
}
else /* formated */
{
if (!lua_isstring(o2))
{
lua_error ("incorrect format to function `write'");
lua_pushnumber(0);
return;
}
lua_pushnumber(fprintf (out, "%s", buildformat(lua_getstring(o2),o1)));
}
}
/*
** Execute a executable program using "sustem".
** On error put 0 on stack, otherwise put 1.
*/
void io_execute (void)
{
lua_Object o = lua_getparam (1);
if (o == NULL || !lua_isstring (o))
{
lua_error ("incorrect argument to function 'execute`");
lua_pushnumber (0);
}
else
{
system(lua_getstring(o));
lua_pushnumber (1);
}
return;
}
/*
** Remove a file.
** On error put 0 on stack, otherwise put 1.
*/
void io_remove (void)
{
lua_Object o = lua_getparam (1);
if (o == NULL || !lua_isstring (o))
{
lua_error ("incorrect argument to function 'execute`");
lua_pushnumber (0);
}
else
{
if (remove(lua_getstring(o)) == 0)
lua_pushnumber (1);
else
lua_pushnumber (0);
}
return;
}
/*
** Open io library
*/
void iolib_open (void)
{
in=stdin; out=stdout;
lua_register ("readfrom", io_readfrom);
lua_register ("writeto", io_writeto);
lua_register ("read", io_read);
lua_register ("write", io_write);
lua_register ("execute", io_execute);
lua_register ("remove", io_remove);
}

923
fixed/lex_yy.c Normal file
View File

@@ -0,0 +1,923 @@
# include "stdio.h"
# define U(x) x
# define NLSTATE yyprevious=YYNEWLINE
# define BEGIN yybgin = yysvec + 1 +
# define INITIAL 0
# define YYLERR yysvec
# define YYSTATE (yyestate-yysvec-1)
# define YYOPTIM 1
# define YYLMAX BUFSIZ
# define output(c) putc(c,yyout)
# define input() (((yytchar=yysptr>yysbuf?U(*--yysptr):getc(yyin))==10?(yylineno++,yytchar):yytchar)==EOF?0:yytchar)
# define unput(c) {yytchar= (c);if(yytchar=='\n')yylineno--;*yysptr++=yytchar;}
# define yymore() (yymorfg=1)
# define ECHO fprintf(yyout, "%s",yytext)
# define REJECT { nstr = yyreject(); goto yyfussy;}
int yyleng; extern char yytext[];
int yymorfg;
extern char *yysptr, yysbuf[];
int yytchar;
FILE *yyin = {NULL}, *yyout = {NULL};
extern int yylineno;
struct yysvf {
struct yywork *yystoff;
struct yysvf *yyother;
int *yystops;};
struct yysvf *yyestate;
extern struct yysvf yysvec[], *yybgin;
#include <stdlib.h>
#include <string.h>
#include "opcode.h"
#include "hash.h"
#include "inout.h"
#include "table.h"
#include "y_tab.h"
#undef input
#undef unput
static Input input;
static Unput unput;
void lua_setinput (Input fn)
{
input = fn;
}
void lua_setunput (Unput fn)
{
unput = fn;
}
char *lua_lasttext (void)
{
return yytext;
}
# define YYNEWLINE 10
yylex(){
int nstr; extern int yyprevious;
while((nstr = yylook()) >= 0)
yyfussy: switch(nstr){
case 0:
if(yywrap()) return(0); break;
case 1:
;
break;
case 2:
{yylval.vInt = 1; return DEBUG;}
break;
case 3:
{yylval.vInt = 0; return DEBUG;}
break;
case 4:
lua_linenumber++;
break;
case 5:
;
break;
case 6:
return LOCAL;
break;
case 7:
return IF;
break;
case 8:
return THEN;
break;
case 9:
return ELSE;
break;
case 10:
return ELSEIF;
break;
case 11:
return WHILE;
break;
case 12:
return DO;
break;
case 13:
return REPEAT;
break;
case 14:
return UNTIL;
break;
case 15:
{
yylval.vWord = lua_nfile-1;
return FUNCTION;
}
break;
case 16:
return END;
break;
case 17:
return RETURN;
break;
case 18:
return LOCAL;
break;
case 19:
return NIL;
break;
case 20:
return AND;
break;
case 21:
return OR;
break;
case 22:
return NOT;
break;
case 23:
return NE;
break;
case 24:
return LE;
break;
case 25:
return GE;
break;
case 26:
return CONC;
break;
case 27:
case 28:
{
yylval.vWord = lua_findenclosedconstant (yytext);
return STRING;
}
break;
case 29:
case 30:
case 31:
case 32:
{
yylval.vFloat = atof(yytext);
return NUMBER;
}
break;
case 33:
{
yylval.vWord = lua_findsymbol (yytext);
return NAME;
}
break;
case 34:
return *yytext;
break;
case -1:
break;
default:
fprintf(yyout,"bad switch yylook %d",nstr);
} return(0); }
/* end of yylex */
int yyvstop[] = {
0,
1,
0,
1,
0,
34,
0,
1,
34,
0,
4,
0,
34,
0,
34,
0,
34,
0,
34,
0,
29,
34,
0,
34,
0,
34,
0,
33,
34,
0,
33,
34,
0,
33,
34,
0,
33,
34,
0,
33,
34,
0,
33,
34,
0,
33,
34,
0,
33,
34,
0,
33,
34,
0,
33,
34,
0,
33,
34,
0,
33,
34,
0,
33,
34,
0,
34,
0,
34,
0,
1,
0,
27,
0,
28,
0,
5,
0,
26,
0,
30,
0,
29,
0,
29,
0,
24,
0,
25,
0,
33,
0,
33,
0,
12,
33,
0,
33,
0,
33,
0,
33,
0,
7,
33,
0,
33,
0,
33,
0,
33,
0,
21,
33,
0,
33,
0,
33,
0,
33,
0,
33,
0,
23,
0,
29,
30,
0,
31,
0,
20,
33,
0,
33,
0,
16,
33,
0,
33,
0,
33,
0,
19,
33,
0,
22,
33,
0,
33,
0,
33,
0,
33,
0,
33,
0,
33,
0,
32,
0,
9,
33,
0,
33,
0,
33,
0,
33,
0,
33,
0,
8,
33,
0,
33,
0,
33,
0,
31,
32,
0,
33,
0,
33,
0,
6,
18,
33,
0,
33,
0,
33,
0,
14,
33,
0,
11,
33,
0,
10,
33,
0,
33,
0,
13,
33,
0,
17,
33,
0,
2,
0,
33,
0,
15,
33,
0,
3,
0,
0};
# define YYTYPE char
struct yywork { YYTYPE verify, advance; } yycrank[] = {
0,0, 0,0, 1,3, 0,0,
0,0, 0,0, 0,0, 0,0,
0,0, 0,0, 1,4, 1,5,
6,29, 4,28, 0,0, 0,0,
0,0, 0,0, 7,31, 0,0,
6,29, 6,29, 0,0, 0,0,
0,0, 0,0, 7,31, 7,31,
0,0, 0,0, 0,0, 0,0,
0,0, 0,0, 0,0, 1,6,
4,28, 0,0, 0,0, 0,0,
1,7, 0,0, 0,0, 0,0,
1,3, 6,30, 1,8, 1,9,
0,0, 1,10, 6,29, 7,31,
8,33, 0,0, 6,29, 0,0,
7,32, 0,0, 0,0, 6,29,
7,31, 1,11, 0,0, 1,12,
2,27, 7,31, 1,13, 11,39,
12,40, 1,13, 26,56, 0,0,
0,0, 2,8, 2,9, 0,0,
6,29, 0,0, 0,0, 6,29,
0,0, 0,0, 7,31, 0,0,
0,0, 7,31, 0,0, 0,0,
2,11, 0,0, 2,12, 0,0,
0,0, 0,0, 0,0, 0,0,
0,0, 0,0, 1,14, 0,0,
0,0, 1,15, 1,16, 1,17,
0,0, 22,52, 1,18, 18,47,
23,53, 1,19, 42,63, 1,20,
1,21, 25,55, 14,42, 1,22,
15,43, 1,23, 1,24, 16,44,
1,25, 16,45, 17,46, 19,48,
21,51, 2,14, 20,49, 1,26,
2,15, 2,16, 2,17, 24,54,
20,50, 2,18, 44,64, 45,65,
2,19, 46,66, 2,20, 2,21,
27,57, 48,67, 2,22, 49,68,
2,23, 2,24, 50,69, 2,25,
52,70, 53,72, 27,58, 54,73,
52,71, 9,34, 2,26, 9,35,
9,35, 9,35, 9,35, 9,35,
9,35, 9,35, 9,35, 9,35,
9,35, 10,36, 55,74, 10,37,
10,37, 10,37, 10,37, 10,37,
10,37, 10,37, 10,37, 10,37,
10,37, 57,75, 58,76, 64,80,
66,81, 67,82, 70,83, 71,84,
72,85, 73,86, 74,87, 10,38,
10,38, 38,61, 10,38, 38,61,
75,88, 76,89, 38,62, 38,62,
38,62, 38,62, 38,62, 38,62,
38,62, 38,62, 38,62, 38,62,
80,92, 81,93, 13,41, 13,41,
13,41, 13,41, 13,41, 13,41,
13,41, 13,41, 13,41, 13,41,
82,94, 83,95, 84,96, 10,38,
10,38, 86,97, 10,38, 13,41,
13,41, 13,41, 13,41, 13,41,
13,41, 13,41, 13,41, 13,41,
13,41, 13,41, 13,41, 13,41,
13,41, 13,41, 13,41, 13,41,
13,41, 13,41, 13,41, 13,41,
13,41, 13,41, 13,41, 13,41,
13,41, 87,98, 88,99, 60,79,
60,79, 13,41, 60,79, 13,41,
13,41, 13,41, 13,41, 13,41,
13,41, 13,41, 13,41, 13,41,
13,41, 13,41, 13,41, 13,41,
13,41, 13,41, 13,41, 13,41,
13,41, 13,41, 13,41, 13,41,
13,41, 13,41, 13,41, 13,41,
13,41, 33,33, 89,100, 60,79,
60,79, 92,101, 60,79, 93,102,
95,103, 33,33, 33,0, 96,104,
99,105, 100,106, 102,107, 106,108,
107,109, 35,35, 35,35, 35,35,
35,35, 35,35, 35,35, 35,35,
35,35, 35,35, 35,35, 108,110,
0,0, 0,0, 0,0, 0,0,
0,0, 0,0, 33,33, 0,0,
0,0, 35,59, 35,59, 33,33,
35,59, 0,0, 0,0, 33,33,
0,0, 0,0, 0,0, 0,0,
33,33, 0,0, 0,0, 0,0,
0,0, 36,60, 36,60, 36,60,
36,60, 36,60, 36,60, 36,60,
36,60, 36,60, 36,60, 0,0,
0,0, 33,33, 0,0, 0,0,
33,33, 35,59, 35,59, 0,0,
35,59, 36,38, 36,38, 59,77,
36,38, 59,77, 0,0, 0,0,
59,78, 59,78, 59,78, 59,78,
59,78, 59,78, 59,78, 59,78,
59,78, 59,78, 61,62, 61,62,
61,62, 61,62, 61,62, 61,62,
61,62, 61,62, 61,62, 61,62,
0,0, 0,0, 0,0, 0,0,
0,0, 36,38, 36,38, 0,0,
36,38, 77,78, 77,78, 77,78,
77,78, 77,78, 77,78, 77,78,
77,78, 77,78, 77,78, 79,90,
0,0, 79,90, 0,0, 0,0,
79,91, 79,91, 79,91, 79,91,
79,91, 79,91, 79,91, 79,91,
79,91, 79,91, 90,91, 90,91,
90,91, 90,91, 90,91, 90,91,
90,91, 90,91, 90,91, 90,91,
0,0};
struct yysvf yysvec[] = {
0, 0, 0,
yycrank+-1, 0, yyvstop+1,
yycrank+-28, yysvec+1, yyvstop+3,
yycrank+0, 0, yyvstop+5,
yycrank+4, 0, yyvstop+7,
yycrank+0, 0, yyvstop+10,
yycrank+-11, 0, yyvstop+12,
yycrank+-17, 0, yyvstop+14,
yycrank+7, 0, yyvstop+16,
yycrank+107, 0, yyvstop+18,
yycrank+119, 0, yyvstop+20,
yycrank+6, 0, yyvstop+23,
yycrank+7, 0, yyvstop+25,
yycrank+158, 0, yyvstop+27,
yycrank+4, yysvec+13, yyvstop+30,
yycrank+5, yysvec+13, yyvstop+33,
yycrank+11, yysvec+13, yyvstop+36,
yycrank+5, yysvec+13, yyvstop+39,
yycrank+5, yysvec+13, yyvstop+42,
yycrank+12, yysvec+13, yyvstop+45,
yycrank+21, yysvec+13, yyvstop+48,
yycrank+10, yysvec+13, yyvstop+51,
yycrank+4, yysvec+13, yyvstop+54,
yycrank+4, yysvec+13, yyvstop+57,
yycrank+21, yysvec+13, yyvstop+60,
yycrank+9, yysvec+13, yyvstop+63,
yycrank+9, 0, yyvstop+66,
yycrank+40, 0, yyvstop+68,
yycrank+0, yysvec+4, yyvstop+70,
yycrank+0, yysvec+6, 0,
yycrank+0, 0, yyvstop+72,
yycrank+0, yysvec+7, 0,
yycrank+0, 0, yyvstop+74,
yycrank+-280, 0, yyvstop+76,
yycrank+0, 0, yyvstop+78,
yycrank+249, 0, yyvstop+80,
yycrank+285, 0, yyvstop+82,
yycrank+0, yysvec+10, yyvstop+84,
yycrank+146, 0, 0,
yycrank+0, 0, yyvstop+86,
yycrank+0, 0, yyvstop+88,
yycrank+0, yysvec+13, yyvstop+90,
yycrank+10, yysvec+13, yyvstop+92,
yycrank+0, yysvec+13, yyvstop+94,
yycrank+19, yysvec+13, yyvstop+97,
yycrank+35, yysvec+13, yyvstop+99,
yycrank+27, yysvec+13, yyvstop+101,
yycrank+0, yysvec+13, yyvstop+103,
yycrank+42, yysvec+13, yyvstop+106,
yycrank+35, yysvec+13, yyvstop+108,
yycrank+30, yysvec+13, yyvstop+110,
yycrank+0, yysvec+13, yyvstop+112,
yycrank+36, yysvec+13, yyvstop+115,
yycrank+48, yysvec+13, yyvstop+117,
yycrank+35, yysvec+13, yyvstop+119,
yycrank+61, yysvec+13, yyvstop+121,
yycrank+0, 0, yyvstop+123,
yycrank+76, 0, 0,
yycrank+67, 0, 0,
yycrank+312, 0, 0,
yycrank+183, yysvec+36, yyvstop+125,
yycrank+322, 0, 0,
yycrank+0, yysvec+61, yyvstop+128,
yycrank+0, yysvec+13, yyvstop+130,
yycrank+78, yysvec+13, yyvstop+133,
yycrank+0, yysvec+13, yyvstop+135,
yycrank+81, yysvec+13, yyvstop+138,
yycrank+84, yysvec+13, yyvstop+140,
yycrank+0, yysvec+13, yyvstop+142,
yycrank+0, yysvec+13, yyvstop+145,
yycrank+81, yysvec+13, yyvstop+148,
yycrank+66, yysvec+13, yyvstop+150,
yycrank+74, yysvec+13, yyvstop+152,
yycrank+80, yysvec+13, yyvstop+154,
yycrank+78, yysvec+13, yyvstop+156,
yycrank+94, 0, 0,
yycrank+93, 0, 0,
yycrank+341, 0, 0,
yycrank+0, yysvec+77, yyvstop+158,
yycrank+356, 0, 0,
yycrank+99, yysvec+13, yyvstop+160,
yycrank+89, yysvec+13, yyvstop+163,
yycrank+108, yysvec+13, yyvstop+165,
yycrank+120, yysvec+13, yyvstop+167,
yycrank+104, yysvec+13, yyvstop+169,
yycrank+0, yysvec+13, yyvstop+171,
yycrank+113, yysvec+13, yyvstop+174,
yycrank+148, yysvec+13, yyvstop+176,
yycrank+133, 0, 0,
yycrank+181, 0, 0,
yycrank+366, 0, 0,
yycrank+0, yysvec+90, yyvstop+178,
yycrank+183, yysvec+13, yyvstop+181,
yycrank+182, yysvec+13, yyvstop+183,
yycrank+0, yysvec+13, yyvstop+185,
yycrank+172, yysvec+13, yyvstop+189,
yycrank+181, yysvec+13, yyvstop+191,
yycrank+0, yysvec+13, yyvstop+193,
yycrank+0, yysvec+13, yyvstop+196,
yycrank+189, 0, 0,
yycrank+195, 0, 0,
yycrank+0, yysvec+13, yyvstop+199,
yycrank+183, yysvec+13, yyvstop+202,
yycrank+0, yysvec+13, yyvstop+204,
yycrank+0, yysvec+13, yyvstop+207,
yycrank+0, 0, yyvstop+210,
yycrank+178, 0, 0,
yycrank+186, yysvec+13, yyvstop+212,
yycrank+204, 0, 0,
yycrank+0, yysvec+13, yyvstop+214,
yycrank+0, 0, yyvstop+217,
0, 0, 0};
struct yywork *yytop = yycrank+423;
struct yysvf *yybgin = yysvec+1;
char yymatch[] = {
00 ,01 ,01 ,01 ,01 ,01 ,01 ,01 ,
01 ,011 ,012 ,01 ,01 ,01 ,01 ,01 ,
01 ,01 ,01 ,01 ,01 ,01 ,01 ,01 ,
01 ,01 ,01 ,01 ,01 ,01 ,01 ,01 ,
011 ,01 ,'"' ,01 ,01 ,01 ,01 ,047 ,
01 ,01 ,01 ,'+' ,01 ,'+' ,01 ,01 ,
'0' ,'0' ,'0' ,'0' ,'0' ,'0' ,'0' ,'0' ,
'0' ,'0' ,01 ,01 ,01 ,01 ,01 ,01 ,
01 ,'A' ,'A' ,'A' ,'D' ,'D' ,'A' ,'D' ,
'A' ,'A' ,'A' ,'A' ,'A' ,'A' ,'A' ,'A' ,
'A' ,'A' ,'A' ,'A' ,'A' ,'A' ,'A' ,'A' ,
'A' ,'A' ,'A' ,01 ,01 ,01 ,01 ,'A' ,
01 ,'A' ,'A' ,'A' ,'D' ,'D' ,'A' ,'D' ,
'A' ,'A' ,'A' ,'A' ,'A' ,'A' ,'A' ,'A' ,
'A' ,'A' ,'A' ,'A' ,'A' ,'A' ,'A' ,'A' ,
'A' ,'A' ,'A' ,01 ,01 ,01 ,01 ,01 ,
0};
char yyextra[] = {
0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,
0};
#ifndef lint
static char ncform_sccsid[] = "@(#)ncform 1.6 88/02/08 SMI"; /* from S5R2 1.2 */
#endif
int yylineno =1;
# define YYU(x) x
# define NLSTATE yyprevious=YYNEWLINE
char yytext[YYLMAX];
struct yysvf *yylstate [YYLMAX], **yylsp, **yyolsp;
char yysbuf[YYLMAX];
char *yysptr = yysbuf;
int *yyfnd;
extern struct yysvf *yyestate;
int yyprevious = YYNEWLINE;
yylook(){
register struct yysvf *yystate, **lsp;
register struct yywork *yyt;
struct yysvf *yyz;
int yych, yyfirst;
struct yywork *yyr;
# ifdef LEXDEBUG
int debug;
# endif
char *yylastch;
/* start off machines */
# ifdef LEXDEBUG
debug = 0;
# endif
yyfirst=1;
if (!yymorfg)
yylastch = yytext;
else {
yymorfg=0;
yylastch = yytext+yyleng;
}
for(;;){
lsp = yylstate;
yyestate = yystate = yybgin;
if (yyprevious==YYNEWLINE) yystate++;
for (;;){
# ifdef LEXDEBUG
if(debug)fprintf(yyout,"state %d\n",yystate-yysvec-1);
# endif
yyt = yystate->yystoff;
if(yyt == yycrank && !yyfirst){ /* may not be any transitions */
yyz = yystate->yyother;
if(yyz == 0)break;
if(yyz->yystoff == yycrank)break;
}
*yylastch++ = yych = input();
yyfirst=0;
tryagain:
# ifdef LEXDEBUG
if(debug){
fprintf(yyout,"char ");
allprint(yych);
putchar('\n');
}
# endif
yyr = yyt;
if ( (int)yyt > (int)yycrank){
yyt = yyr + yych;
if (yyt <= yytop && yyt->verify+yysvec == yystate){
if(yyt->advance+yysvec == YYLERR) /* error transitions */
{unput(*--yylastch);break;}
*lsp++ = yystate = yyt->advance+yysvec;
goto contin;
}
}
# ifdef YYOPTIM
else if((int)yyt < (int)yycrank) { /* r < yycrank */
yyt = yyr = yycrank+(yycrank-yyt);
# ifdef LEXDEBUG
if(debug)fprintf(yyout,"compressed state\n");
# endif
yyt = yyt + yych;
if(yyt <= yytop && yyt->verify+yysvec == yystate){
if(yyt->advance+yysvec == YYLERR) /* error transitions */
{unput(*--yylastch);break;}
*lsp++ = yystate = yyt->advance+yysvec;
goto contin;
}
yyt = yyr + YYU(yymatch[yych]);
# ifdef LEXDEBUG
if(debug){
fprintf(yyout,"try fall back character ");
allprint(YYU(yymatch[yych]));
putchar('\n');
}
# endif
if(yyt <= yytop && yyt->verify+yysvec == yystate){
if(yyt->advance+yysvec == YYLERR) /* error transition */
{unput(*--yylastch);break;}
*lsp++ = yystate = yyt->advance+yysvec;
goto contin;
}
}
if ((yystate = yystate->yyother) && (yyt= yystate->yystoff) != yycrank){
# ifdef LEXDEBUG
if(debug)fprintf(yyout,"fall back to state %d\n",yystate-yysvec-1);
# endif
goto tryagain;
}
# endif
else
{unput(*--yylastch);break;}
contin:
# ifdef LEXDEBUG
if(debug){
fprintf(yyout,"state %d char ",yystate-yysvec-1);
allprint(yych);
putchar('\n');
}
# endif
;
}
# ifdef LEXDEBUG
if(debug){
fprintf(yyout,"stopped at %d with ",*(lsp-1)-yysvec-1);
allprint(yych);
putchar('\n');
}
# endif
while (lsp-- > yylstate){
*yylastch-- = 0;
if (*lsp != 0 && (yyfnd= (*lsp)->yystops) && *yyfnd > 0){
yyolsp = lsp;
if(yyextra[*yyfnd]){ /* must backup */
while(yyback((*lsp)->yystops,-*yyfnd) != 1 && lsp > yylstate){
lsp--;
unput(*yylastch--);
}
}
yyprevious = YYU(*yylastch);
yylsp = lsp;
yyleng = yylastch-yytext+1;
yytext[yyleng] = 0;
# ifdef LEXDEBUG
if(debug){
fprintf(yyout,"\nmatch ");
sprint(yytext);
fprintf(yyout," action %d\n",*yyfnd);
}
# endif
return(*yyfnd++);
}
unput(*yylastch);
}
if (yytext[0] == 0 /* && feof(yyin) */)
{
yysptr=yysbuf;
return(0);
}
yyprevious = yytext[0] = input();
if (yyprevious>0)
output(yyprevious);
yylastch=yytext;
# ifdef LEXDEBUG
if(debug)putchar('\n');
# endif
}
}
yyback(p, m)
int *p;
{
if (p==0) return(0);
while (*p)
{
if (*p++ == m)
return(1);
}
return(0);
}
/* the following are only used in the lex library */
yyinput(){
return(input());
}
yyoutput(c)
int c; {
output(c);
}
yyunput(c)
int c; {
unput(c);
}

55
fixed/lua.c Normal file
View File

@@ -0,0 +1,55 @@
/*
** lua.c
** Linguagem para Usuarios de Aplicacao
** TeCGraf - PUC-Rio
** 28 Apr 93
*/
#include <stdio.h>
#include "lua.h"
#include "lualib.h"
void test (void)
{
lua_pushobject(lua_getparam(1));
lua_call ("c", 1);
}
static void callfunc (void)
{
lua_Object obj = lua_getparam (1);
if (lua_isstring(obj)) lua_call(lua_getstring(obj),0);
}
static void execstr (void)
{
lua_Object obj = lua_getparam (1);
if (lua_isstring(obj)) lua_dostring(lua_getstring(obj));
}
int main (int argc, char *argv[])
{
int i;
if (argc < 2)
{
puts ("usage: lua filename [functionnames]");
return;
}
lua_register ("callfunc", callfunc);
lua_register ("execstr", execstr);
lua_register ("test", test);
iolib_open ();
strlib_open ();
mathlib_open ();
lua_dofile (argv[1]);
for (i=2; i<argc; i++)
{
lua_call (argv[i],0);
}
return 0;
}

1
floatingpoint.h Normal file
View File

@@ -0,0 +1 @@
/* empty file to please silly code in iolib.c and opcode.c */

5
globals.lua Normal file
View File

@@ -0,0 +1,5 @@
k,v=nextvar(k)
while k do
print(k)
k,v=nextvar(k)
end

259
hash.c Normal file
View File

@@ -0,0 +1,259 @@
/*
** hash.c
** hash manager for lua
** Luiz Henrique de Figueiredo - 17 Aug 90
** Modified by Waldemar Celes Filho
** 12 May 93
*/
#include <string.h>
#include <stdlib.h>
#include "opcode.h"
#include "hash.h"
#include "inout.h"
#include "table.h"
#include "lua.h"
#define streq(s1,s2) (strcmp(s1,s2)==0)
#define strneq(s1,s2) (strcmp(s1,s2)!=0)
#define new(s) ((s *)malloc(sizeof(s)))
#define newvector(n,s) ((s *)calloc(n,sizeof(s)))
#define nhash(t) ((t)->nhash)
#define nodelist(t) ((t)->list)
#define list(t,i) ((t)->list[i])
#define ref_tag(n) (tag(&(n)->ref))
#define ref_nvalue(n) (nvalue(&(n)->ref))
#define ref_svalue(n) (svalue(&(n)->ref))
static int head (Hash *t, Object *ref) /* hash function */
{
if (tag(ref) == T_NUMBER) return (((int)nvalue(ref))%nhash(t));
else if (tag(ref) == T_STRING)
{
int h;
char *name = svalue(ref);
for (h=0; *name!=0; name++) /* interpret name as binary number */
{
h <<= 8;
h += (unsigned char) *name; /* avoid sign extension */
h %= nhash(t); /* make it a valid index */
}
return h;
}
else
{
lua_reportbug ("unexpected type to index table");
return -1;
}
}
static Node *present(Hash *t, Object *ref, int h)
{
Node *n=NULL, *p;
if (tag(ref) == T_NUMBER)
{
for (p=NULL,n=list(t,h); n!=NULL; p=n, n=n->next)
if (ref_tag(n) == T_NUMBER && nvalue(ref) == ref_nvalue(n)) break;
}
else if (tag(ref) == T_STRING)
{
for (p=NULL,n=list(t,h); n!=NULL; p=n, n=n->next)
if (ref_tag(n) == T_STRING && streq(svalue(ref),ref_svalue(n))) break;
}
if (n==NULL) /* name not present */
return NULL;
#if 0
if (p!=NULL) /* name present but not first */
{
p->next=n->next; /* move-to-front self-organization */
n->next=list(t,h);
list(t,h)=n;
}
#endif
return n;
}
static void freelist (Node *n)
{
while (n)
{
Node *next = n->next;
free (n);
n = next;
}
}
/*
** Create a new hash. Return the hash pointer or NULL on error.
*/
Hash *lua_hashcreate (unsigned int nhash)
{
Hash *t = new (Hash);
if (t == NULL)
{
lua_error ("not enough memory");
return NULL;
}
nhash(t) = nhash;
markarray(t) = 0;
nodelist(t) = newvector (nhash, Node*);
if (nodelist(t) == NULL)
{
lua_error ("not enough memory");
return NULL;
}
return t;
}
/*
** Delete a hash
*/
void lua_hashdelete (Hash *h)
{
int i;
for (i=0; i<nhash(h); i++)
freelist (list(h,i));
free (nodelist(h));
free(h);
}
/*
** If the hash node is present, return its pointer, otherwise create a new
** node for the given reference and also return its pointer.
** On error, return NULL.
*/
Object *lua_hashdefine (Hash *t, Object *ref)
{
int h;
Node *n;
h = head (t, ref);
if (h < 0) return NULL;
n = present(t, ref, h);
if (n == NULL)
{
n = new(Node);
if (n == NULL)
{
lua_error ("not enough memory");
return NULL;
}
n->ref = *ref;
tag(&n->val) = T_NIL;
n->next = list(t,h); /* link node to head of list */
list(t,h) = n;
}
return (&n->val);
}
/*
** Mark a hash and check its elements
*/
void lua_hashmark (Hash *h)
{
int i;
markarray(h) = 1;
for (i=0; i<nhash(h); i++)
{
Node *n;
for (n = list(h,i); n != NULL; n = n->next)
{
lua_markobject (&n->ref);
lua_markobject (&n->val);
}
}
}
/*
** Internal function to manipulate arrays.
** Given an array object and a reference value, return the next element
** in the hash.
** This function pushs the element value and its reference to the stack.
*/
#include "lua.h"
static void firstnode (Hash *a, int h)
{
if (h < nhash(a))
{
int i;
for (i=h; i<nhash(a); i++)
{
if (list(a,i) != NULL && tag(&list(a,i)->val) != T_NIL)
{
lua_pushobject (&list(a,i)->ref);
lua_pushobject (&list(a,i)->val);
return;
}
}
}
lua_pushnil();
lua_pushnil();
}
void lua_next (void)
{
Hash *a;
Object *o = lua_getparam (1);
Object *r = lua_getparam (2);
if (o == NULL || r == NULL)
{ lua_error ("too few arguments to function `next'"); return; }
if (lua_getparam (3) != NULL)
{ lua_error ("too many arguments to function `next'"); return; }
if (tag(o) != T_ARRAY)
{ lua_error ("first argument of function `next' is not a table"); return; }
a = avalue(o);
if (tag(r) == T_NIL)
{
firstnode (a, 0);
return;
}
else
{
int h = head (a, r);
if (h >= 0)
{
Node *n = list(a,h);
while (n)
{
if (memcmp(&n->ref,r,sizeof(Object)) == 0)
{
if (n->next == NULL)
{
firstnode (a, h+1);
return;
}
else if (tag(&n->next->val) != T_NIL)
{
lua_pushobject (&n->next->ref);
lua_pushobject (&n->next->val);
return;
}
else
{
Node *next = n->next->next;
while (next != NULL && tag(&next->val) == T_NIL) next = next->next;
if (next == NULL)
{
firstnode (a, h+1);
return;
}
else
{
lua_pushobject (&next->ref);
lua_pushobject (&next->val);
}
return;
}
}
n = n->next;
}
if (n == NULL)
lua_error ("error in function 'next': reference not found");
}
}
}

35
hash.h Normal file
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@@ -0,0 +1,35 @@
/*
** hash.h
** hash manager for lua
** Luiz Henrique de Figueiredo - 17 Aug 90
** Modified by Waldemar Celes Filho
** 26 Apr 93
*/
#ifndef hash_h
#define hash_h
typedef struct node
{
Object ref;
Object val;
struct node *next;
} Node;
typedef struct Hash
{
char mark;
unsigned int nhash;
Node **list;
} Hash;
#define markarray(t) ((t)->mark)
Hash *lua_hashcreate (unsigned int nhash);
void lua_hashdelete (Hash *h);
Object *lua_hashdefine (Hash *t, Object *ref);
void lua_hashmark (Hash *h);
void lua_next (void);
#endif

188
inout.c Normal file
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/*
** inout.c
** Provide function to realise the input/output function and debugger
** facilities.
**
** Waldemar Celes Filho
** TeCGraf - PUC-Rio
** 11 May 93
*/
#include <stdio.h>
#include <string.h>
#include "opcode.h"
#include "hash.h"
#include "inout.h"
#include "table.h"
/* Exported variables */
int lua_linenumber;
int lua_debug;
int lua_debugline;
/* Internal variables */
#ifndef MAXFUNCSTACK
#define MAXFUNCSTACK 32
#endif
static struct { int file; int function; } funcstack[MAXFUNCSTACK];
static int nfuncstack=0;
static FILE *fp;
static char *st;
static void (*usererror) (char *s);
/*
** Function to set user function to handle errors.
*/
void lua_errorfunction (void (*fn) (char *s))
{
usererror = fn;
}
/*
** Function to get the next character from the input file
*/
static int fileinput (void)
{
int c = fgetc (fp);
return (c == EOF ? 0 : c);
}
/*
** Function to unget the next character from to input file
*/
static void fileunput (int c)
{
ungetc (c, fp);
}
/*
** Function to get the next character from the input string
*/
static int stringinput (void)
{
st++;
return (*(st-1));
}
/*
** Function to unget the next character from to input string
*/
static void stringunput (int c)
{
st--;
}
/*
** Function to open a file to be input unit.
** Return 0 on success or 1 on error.
*/
int lua_openfile (char *fn)
{
lua_linenumber = 1;
lua_setinput (fileinput);
lua_setunput (fileunput);
fp = fopen (fn, "r");
if (fp == NULL) return 1;
if (lua_addfile (fn)) return 1;
return 0;
}
/*
** Function to close an opened file
*/
void lua_closefile (void)
{
if (fp != NULL)
{
fclose (fp);
fp = NULL;
}
}
/*
** Function to open a string to be input unit
*/
int lua_openstring (char *s)
{
lua_linenumber = 1;
lua_setinput (stringinput);
lua_setunput (stringunput);
st = s;
{
char sn[64];
sprintf (sn, "String: %10.10s...", s);
if (lua_addfile (sn)) return 1;
}
return 0;
}
/*
** Call user function to handle error messages, if registred. Or report error
** using standard function (fprintf).
*/
void lua_error (char *s)
{
if (usererror != NULL) usererror (s);
else fprintf (stderr, "lua: %s\n", s);
}
/*
** Called to execute SETFUNCTION opcode, this function pushs a function into
** function stack. Return 0 on success or 1 on error.
*/
int lua_pushfunction (int file, int function)
{
if (nfuncstack >= MAXFUNCSTACK-1)
{
lua_error ("function stack overflow");
return 1;
}
funcstack[nfuncstack].file = file;
funcstack[nfuncstack].function = function;
nfuncstack++;
return 0;
}
/*
** Called to execute RESET opcode, this function pops a function from
** function stack.
*/
void lua_popfunction (void)
{
nfuncstack--;
}
/*
** Report bug building a message and sending it to lua_error function.
*/
void lua_reportbug (char *s)
{
char msg[1024];
strcpy (msg, s);
if (lua_debugline != 0)
{
int i;
if (nfuncstack > 0)
{
sprintf (strchr(msg,0),
"\n\tin statement begining at line %d in function \"%s\" of file \"%s\"",
lua_debugline, s_name(funcstack[nfuncstack-1].function),
lua_file[funcstack[nfuncstack-1].file]);
sprintf (strchr(msg,0), "\n\tactive stack\n");
for (i=nfuncstack-1; i>=0; i--)
sprintf (strchr(msg,0), "\t-> function \"%s\" of file \"%s\"\n",
s_name(funcstack[i].function),
lua_file[funcstack[i].file]);
}
else
{
sprintf (strchr(msg,0),
"\n\tin statement begining at line %d of file \"%s\"",
lua_debugline, lua_filename());
}
}
lua_error (msg);
}

24
inout.h Normal file
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@@ -0,0 +1,24 @@
/*
** inout.h
**
** Waldemar Celes Filho
** TeCGraf - PUC-Rio
** 11 May 93
*/
#ifndef inout_h
#define inout_h
extern int lua_linenumber;
extern int lua_debug;
extern int lua_debugline;
int lua_openfile (char *fn);
void lua_closefile (void);
int lua_openstring (char *s);
int lua_pushfunction (int file, int function);
void lua_popfunction (void);
void lua_reportbug (char *s);
#endif

401
iolib.c Normal file
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@@ -0,0 +1,401 @@
/*
** iolib.c
** Input/output library to LUA
**
** Waldemar Celes Filho
** TeCGraf - PUC-Rio
** 19 May 93
*/
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <ctype.h>
#ifdef __GNUC__
#include <floatingpoint.h>
#endif
#include "lua.h"
static FILE *in=stdin, *out=stdout;
/*
** Open a file to read.
** LUA interface:
** status = readfrom (filename)
** where:
** status = 1 -> success
** status = 0 -> error
*/
static void io_readfrom (void)
{
lua_Object o = lua_getparam (1);
if (o == NULL) /* restore standart input */
{
if (in != stdin)
{
fclose (in);
in = stdin;
}
lua_pushnumber (1);
}
else
{
if (!lua_isstring (o))
{
lua_error ("incorrect argument to function 'readfrom`");
lua_pushnumber (0);
}
else
{
FILE *fp = fopen (lua_getstring(o),"r");
if (fp == NULL)
{
lua_pushnumber (0);
}
else
{
if (in != stdin) fclose (in);
in = fp;
lua_pushnumber (1);
}
}
}
}
/*
** Open a file to write.
** LUA interface:
** status = writeto (filename)
** where:
** status = 1 -> success
** status = 0 -> error
*/
static void io_writeto (void)
{
lua_Object o = lua_getparam (1);
if (o == NULL) /* restore standart output */
{
if (out != stdout)
{
fclose (out);
out = stdout;
}
lua_pushnumber (1);
}
else
{
if (!lua_isstring (o))
{
lua_error ("incorrect argument to function 'writeto`");
lua_pushnumber (0);
}
else
{
FILE *fp = fopen (lua_getstring(o),"w");
if (fp == NULL)
{
lua_pushnumber (0);
}
else
{
if (out != stdout) fclose (out);
out = fp;
lua_pushnumber (1);
}
}
}
}
/*
** Read a variable. On error put nil on stack.
** LUA interface:
** variable = read ([format])
**
** O formato pode ter um dos seguintes especificadores:
**
** s ou S -> para string
** f ou F, g ou G, e ou E -> para reais
** i ou I -> para inteiros
**
** Estes especificadores podem vir seguidos de numero que representa
** o numero de campos a serem lidos.
*/
static void io_read (void)
{
lua_Object o = lua_getparam (1);
if (o == NULL) /* free format */
{
int c;
char s[256];
while (isspace(c=fgetc(in)))
;
if (c == '\"')
{
if (fscanf (in, "%[^\"]\"", s) != 1)
{
lua_pushnil ();
return;
}
}
else if (c == '\'')
{
if (fscanf (in, "%[^\']\'", s) != 1)
{
lua_pushnil ();
return;
}
}
else
{
char *ptr;
double d;
ungetc (c, in);
if (fscanf (in, "%s", s) != 1)
{
lua_pushnil ();
return;
}
d = strtod (s, &ptr);
if (!(*ptr))
{
lua_pushnumber (d);
return;
}
}
lua_pushstring (s);
return;
}
else /* formatted */
{
char *e = lua_getstring(o);
char t;
int m=0;
while (isspace(*e)) e++;
t = *e++;
while (isdigit(*e))
m = m*10 + (*e++ - '0');
if (m > 0)
{
char f[80];
char s[256];
sprintf (f, "%%%ds", m);
fscanf (in, f, s);
switch (tolower(t))
{
case 'i':
{
long int l;
sscanf (s, "%ld", &l);
lua_pushnumber(l);
}
break;
case 'f': case 'g': case 'e':
{
float f;
sscanf (s, "%f", &f);
lua_pushnumber(f);
}
break;
default:
lua_pushstring(s);
break;
}
}
else
{
switch (tolower(t))
{
case 'i':
{
long int l;
fscanf (in, "%ld", &l);
lua_pushnumber(l);
}
break;
case 'f': case 'g': case 'e':
{
float f;
fscanf (in, "%f", &f);
lua_pushnumber(f);
}
break;
default:
{
char s[256];
fscanf (in, "%s", s);
lua_pushstring(s);
}
break;
}
}
}
}
/*
** Write a variable. On error put 0 on stack, otherwise put 1.
** LUA interface:
** status = write (variable [,format])
**
** O formato pode ter um dos seguintes especificadores:
**
** s ou S -> para string
** f ou F, g ou G, e ou E -> para reais
** i ou I -> para inteiros
**
** Estes especificadores podem vir seguidos de:
**
** [?][m][.n]
**
** onde:
** ? -> indica justificacao
** < = esquerda
** | = centro
** > = direita (default)
** m -> numero maximo de campos (se exceder estoura)
** n -> indica precisao para
** reais -> numero de casas decimais
** inteiros -> numero minimo de digitos
** string -> nao se aplica
*/
static char *buildformat (char *e, lua_Object o)
{
static char buffer[512];
static char f[80];
char *string = &buffer[255];
char t, j='r';
int m=0, n=0, l;
while (isspace(*e)) e++;
t = *e++;
if (*e == '<' || *e == '|' || *e == '>') j = *e++;
while (isdigit(*e))
m = m*10 + (*e++ - '0');
e++; /* skip point */
while (isdigit(*e))
n = n*10 + (*e++ - '0');
sprintf(f,"%%");
if (j == '<' || j == '|') sprintf(strchr(f,0),"-");
if (m != 0) sprintf(strchr(f,0),"%d", m);
if (n != 0) sprintf(strchr(f,0),".%d", n);
sprintf(strchr(f,0), "%c", t);
switch (tolower(t))
{
case 'i': t = 'i';
sprintf (string, f, (long int)lua_getnumber(o));
break;
case 'f': case 'g': case 'e': t = 'f';
sprintf (string, f, (float)lua_getnumber(o));
break;
case 's': t = 's';
sprintf (string, f, lua_getstring(o));
break;
default: return "";
}
l = strlen(string);
if (m!=0 && l>m)
{
int i;
for (i=0; i<m; i++)
string[i] = '*';
string[i] = 0;
}
else if (m!=0 && j=='|')
{
int i=l-1;
while (isspace(string[i])) i--;
string -= (m-i) / 2;
i=0;
while (string[i]==0) string[i++] = ' ';
string[l] = 0;
}
return string;
}
static void io_write (void)
{
lua_Object o1 = lua_getparam (1);
lua_Object o2 = lua_getparam (2);
if (o1 == NULL) /* new line */
{
fprintf (out, "\n");
lua_pushnumber(1);
}
else if (o2 == NULL) /* free format */
{
int status=0;
if (lua_isnumber(o1))
status = fprintf (out, "%g", lua_getnumber(o1));
else if (lua_isstring(o1))
status = fprintf (out, "%s", lua_getstring(o1));
lua_pushnumber(status);
}
else /* formated */
{
if (!lua_isstring(o2))
{
lua_error ("incorrect format to function `write'");
lua_pushnumber(0);
return;
}
lua_pushnumber(fprintf (out, "%s", buildformat(lua_getstring(o2),o1)));
}
}
/*
** Execute a executable program using "sustem".
** On error put 0 on stack, otherwise put 1.
*/
void io_execute (void)
{
lua_Object o = lua_getparam (1);
if (o == NULL || !lua_isstring (o))
{
lua_error ("incorrect argument to function 'execute`");
lua_pushnumber (0);
}
else
{
system(lua_getstring(o));
lua_pushnumber (1);
}
return;
}
/*
** Remove a file.
** On error put 0 on stack, otherwise put 1.
*/
void io_remove (void)
{
lua_Object o = lua_getparam (1);
if (o == NULL || !lua_isstring (o))
{
lua_error ("incorrect argument to function 'execute`");
lua_pushnumber (0);
}
else
{
if (remove(lua_getstring(o)) == 0)
lua_pushnumber (1);
else
lua_pushnumber (0);
}
return;
}
/*
** Open io library
*/
void iolib_open (void)
{
lua_register ("readfrom", io_readfrom);
lua_register ("writeto", io_writeto);
lua_register ("read", io_read);
lua_register ("write", io_write);
lua_register ("execute", io_execute);
lua_register ("remove", io_remove);
}

765
lapi.c
View File

@@ -1,765 +0,0 @@
/*
** $Id: lapi.c,v 1.210 2002/08/07 14:24:24 roberto Exp roberto $
** Lua API
** See Copyright Notice in lua.h
*/
#include <string.h>
#include "lua.h"
#include "lapi.h"
#include "ldebug.h"
#include "ldo.h"
#include "lfunc.h"
#include "lgc.h"
#include "lmem.h"
#include "lobject.h"
#include "lstate.h"
#include "lstring.h"
#include "ltable.h"
#include "ltm.h"
#include "lundump.h"
#include "lvm.h"
const char lua_ident[] =
"$Lua: " LUA_VERSION " " LUA_COPYRIGHT " $\n"
"$Authors: " LUA_AUTHORS " $\n"
"$URL: www.lua.org $\n";
#ifndef api_check
#define api_check(L, o) ((void)1)
#endif
#define api_checknelems(L, n) api_check(L, (n) <= (L->top - L->ci->base))
#define api_incr_top(L) (api_check(L, L->top<L->ci->top), L->top++)
static TObject *negindex (lua_State *L, int index) {
if (index > LUA_REGISTRYINDEX) {
api_check(L, index != 0 && -index <= L->top - L->ci->base);
return L->top+index;
}
else switch (index) { /* pseudo-indices */
case LUA_REGISTRYINDEX: return registry(L);
case LUA_GLOBALSINDEX: return gt(L);
default: {
TObject *func = (L->ci->base - 1);
index = LUA_GLOBALSINDEX - index;
api_check(L, iscfunction(func) && index <= clvalue(func)->c.nupvalues);
return &clvalue(func)->c.upvalue[index-1];
}
}
}
#define luaA_index(L, index) \
( (index > 0) ? \
(api_check(L, index <= L->top - L->ci->base), L->ci->base+index-1) : \
negindex(L, index))
static TObject *luaA_indexAcceptable (lua_State *L, int index) {
if (index > 0) {
TObject *o = L->ci->base+(index-1);
api_check(L, index <= L->stack_last - L->ci->base);
if (o >= L->top) return NULL;
else return o;
}
else
return negindex(L, index);
}
void luaA_pushobject (lua_State *L, const TObject *o) {
setobj(L->top, o);
incr_top(L);
}
LUA_API int lua_checkstack (lua_State *L, int size) {
int res;
lua_lock(L);
if ((L->top - L->ci->base + size) > LUA_MAXCSTACK)
res = 0; /* stack overflow */
else {
luaD_checkstack(L, size);
if (L->ci->top < L->top + size)
L->ci->top = L->top + size;
res = 1;
}
lua_unlock(L);
return res;
}
LUA_API lua_CFunction lua_atpanic (lua_State *L, lua_CFunction panicf) {
lua_CFunction old;
lua_lock(L);
old = G(L)->panic;
G(L)->panic = panicf;
lua_unlock(L);
return old;
}
/*
** basic stack manipulation
*/
LUA_API int lua_gettop (lua_State *L) {
return (L->top - L->ci->base);
}
LUA_API void lua_settop (lua_State *L, int index) {
lua_lock(L);
if (index >= 0) {
api_check(L, index <= L->stack_last - L->ci->base);
while (L->top < L->ci->base + index)
setnilvalue(L->top++);
L->top = L->ci->base + index;
}
else {
api_check(L, -(index+1) <= (L->top - L->ci->base));
L->top += index+1; /* `subtract' index (index is negative) */
}
lua_unlock(L);
}
LUA_API void lua_remove (lua_State *L, int index) {
StkId p;
lua_lock(L);
p = luaA_index(L, index);
while (++p < L->top) setobj(p-1, p);
L->top--;
lua_unlock(L);
}
LUA_API void lua_insert (lua_State *L, int index) {
StkId p;
StkId q;
lua_lock(L);
p = luaA_index(L, index);
for (q = L->top; q>p; q--) setobj(q, q-1);
setobj(p, L->top);
lua_unlock(L);
}
LUA_API void lua_replace (lua_State *L, int index) {
lua_lock(L);
api_checknelems(L, 1);
setobj(luaA_index(L, index), L->top - 1);
L->top--;
lua_unlock(L);
}
LUA_API void lua_pushvalue (lua_State *L, int index) {
lua_lock(L);
setobj(L->top, luaA_index(L, index));
api_incr_top(L);
lua_unlock(L);
}
/*
** access functions (stack -> C)
*/
LUA_API int lua_type (lua_State *L, int index) {
StkId o = luaA_indexAcceptable(L, index);
return (o == NULL) ? LUA_TNONE : ttype(o);
}
LUA_API const char *lua_typename (lua_State *L, int t) {
UNUSED(L);
return (t == LUA_TNONE) ? "no value" : luaT_typenames[t];
}
LUA_API int lua_iscfunction (lua_State *L, int index) {
StkId o = luaA_indexAcceptable(L, index);
return (o == NULL) ? 0 : iscfunction(o);
}
LUA_API int lua_isnumber (lua_State *L, int index) {
TObject n;
const TObject *o = luaA_indexAcceptable(L, index);
return (o != NULL && tonumber(o, &n));
}
LUA_API int lua_isstring (lua_State *L, int index) {
int t = lua_type(L, index);
return (t == LUA_TSTRING || t == LUA_TNUMBER);
}
LUA_API int lua_rawequal (lua_State *L, int index1, int index2) {
StkId o1 = luaA_indexAcceptable(L, index1);
StkId o2 = luaA_indexAcceptable(L, index2);
return (o1 == NULL || o2 == NULL) ? 0 /* index out of range */
: luaO_rawequalObj(o1, o2);
}
LUA_API int lua_equal (lua_State *L, int index1, int index2) {
StkId o1, o2;
int i;
lua_lock(L); /* may call tag method */
o1 = luaA_indexAcceptable(L, index1);
o2 = luaA_indexAcceptable(L, index2);
i = (o1 == NULL || o2 == NULL) ? 0 /* index out of range */
: equalobj(L, o1, o2);
lua_unlock(L);
return i;
}
LUA_API int lua_lessthan (lua_State *L, int index1, int index2) {
StkId o1, o2;
int i;
lua_lock(L); /* may call tag method */
o1 = luaA_indexAcceptable(L, index1);
o2 = luaA_indexAcceptable(L, index2);
i = (o1 == NULL || o2 == NULL) ? 0 /* index out-of-range */
: luaV_lessthan(L, o1, o2);
lua_unlock(L);
return i;
}
LUA_API lua_Number lua_tonumber (lua_State *L, int index) {
TObject n;
const TObject *o = luaA_indexAcceptable(L, index);
if (o != NULL && tonumber(o, &n))
return nvalue(o);
else
return 0;
}
LUA_API int lua_toboolean (lua_State *L, int index) {
const TObject *o = luaA_indexAcceptable(L, index);
return (o != NULL) && !l_isfalse(o);
}
LUA_API const char *lua_tostring (lua_State *L, int index) {
StkId o = luaA_indexAcceptable(L, index);
if (o == NULL)
return NULL;
else if (ttisstring(o))
return svalue(o);
else {
const char *s;
lua_lock(L); /* `luaV_tostring' may create a new string */
s = (luaV_tostring(L, o) ? svalue(o) : NULL);
lua_unlock(L);
return s;
}
}
LUA_API size_t lua_strlen (lua_State *L, int index) {
StkId o = luaA_indexAcceptable(L, index);
if (o == NULL)
return 0;
else if (ttisstring(o))
return tsvalue(o)->tsv.len;
else {
size_t l;
lua_lock(L); /* `luaV_tostring' may create a new string */
l = (luaV_tostring(L, o) ? tsvalue(o)->tsv.len : 0);
lua_unlock(L);
return l;
}
}
LUA_API lua_CFunction lua_tocfunction (lua_State *L, int index) {
StkId o = luaA_indexAcceptable(L, index);
return (o == NULL || !iscfunction(o)) ? NULL : clvalue(o)->c.f;
}
LUA_API void *lua_touserdata (lua_State *L, int index) {
StkId o = luaA_indexAcceptable(L, index);
if (o == NULL) return NULL;
switch (ttype(o)) {
case LUA_TUSERDATA: return (uvalue(o) + 1);
case LUA_TLIGHTUSERDATA: return pvalue(o);
default: return NULL;
}
}
LUA_API const void *lua_topointer (lua_State *L, int index) {
StkId o = luaA_indexAcceptable(L, index);
if (o == NULL) return NULL;
else {
switch (ttype(o)) {
case LUA_TTABLE: return hvalue(o);
case LUA_TFUNCTION: return clvalue(o);
case LUA_TUSERDATA:
case LUA_TLIGHTUSERDATA:
return lua_touserdata(L, index);
default: return NULL;
}
}
}
/*
** push functions (C -> stack)
*/
LUA_API void lua_pushnil (lua_State *L) {
lua_lock(L);
setnilvalue(L->top);
api_incr_top(L);
lua_unlock(L);
}
LUA_API void lua_pushnumber (lua_State *L, lua_Number n) {
lua_lock(L);
setnvalue(L->top, n);
api_incr_top(L);
lua_unlock(L);
}
LUA_API void lua_pushlstring (lua_State *L, const char *s, size_t len) {
lua_lock(L);
setsvalue(L->top, luaS_newlstr(L, s, len));
api_incr_top(L);
lua_unlock(L);
}
LUA_API void lua_pushstring (lua_State *L, const char *s) {
if (s == NULL)
lua_pushnil(L);
else
lua_pushlstring(L, s, strlen(s));
}
LUA_API const char *lua_pushvfstring (lua_State *L, const char *fmt,
va_list argp) {
const char *ret;
lua_lock(L);
ret = luaO_pushvfstring(L, fmt, argp);
lua_unlock(L);
return ret;
}
LUA_API const char *lua_pushfstring (lua_State *L, const char *fmt, ...) {
const char *ret;
va_list argp;
lua_lock(L);
va_start(argp, fmt);
ret = luaO_pushvfstring(L, fmt, argp);
va_end(argp);
lua_unlock(L);
return ret;
}
LUA_API void lua_pushcclosure (lua_State *L, lua_CFunction fn, int n) {
Closure *cl;
lua_lock(L);
api_checknelems(L, n);
cl = luaF_newCclosure(L, n);
cl->c.f = fn;
L->top -= n;
while (n--)
setobj(&cl->c.upvalue[n], L->top+n);
setclvalue(L->top, cl);
api_incr_top(L);
lua_unlock(L);
}
LUA_API void lua_pushboolean (lua_State *L, int b) {
lua_lock(L);
setbvalue(L->top, (b != 0)); /* ensure that true is 1 */
api_incr_top(L);
lua_unlock(L);
}
LUA_API void lua_pushlightuserdata (lua_State *L, void *p) {
lua_lock(L);
setpvalue(L->top, p);
api_incr_top(L);
lua_unlock(L);
}
/*
** get functions (Lua -> stack)
*/
LUA_API void lua_gettable (lua_State *L, int index) {
StkId t;
const TObject *v;
lua_lock(L);
t = luaA_index(L, index);
v = luaV_gettable(L, t, L->top-1, 0);
setobj(L->top - 1, v);
lua_unlock(L);
}
LUA_API void lua_rawget (lua_State *L, int index) {
StkId t;
lua_lock(L);
t = luaA_index(L, index);
api_check(L, ttistable(t));
setobj(L->top - 1, luaH_get(hvalue(t), L->top - 1));
lua_unlock(L);
}
LUA_API void lua_rawgeti (lua_State *L, int index, int n) {
StkId o;
lua_lock(L);
o = luaA_index(L, index);
api_check(L, ttistable(o));
setobj(L->top, luaH_getnum(hvalue(o), n));
api_incr_top(L);
lua_unlock(L);
}
LUA_API void lua_newtable (lua_State *L) {
lua_lock(L);
sethvalue(L->top, luaH_new(L, 0, 0));
api_incr_top(L);
lua_unlock(L);
}
LUA_API const char *lua_getmode (lua_State *L, int index) {
static const char *const modes[] = {"", "k", "v", "kv"};
int mode = 0;
TObject *t;
lua_lock(L);
t = luaA_index(L, index);
api_check(L, ttistable(t));
if (hvalue(t)->mode & WEAKKEY) mode += 1;
if (hvalue(t)->mode & WEAKVALUE) mode += 2;
lua_unlock(L);
return modes[mode];
}
LUA_API int lua_getmetatable (lua_State *L, int objindex) {
StkId obj;
Table *mt;
int res;
lua_lock(L);
obj = luaA_indexAcceptable(L, objindex);
switch (ttype(obj)) {
case LUA_TTABLE:
mt = hvalue(obj)->metatable;
break;
case LUA_TUSERDATA:
mt = uvalue(obj)->uv.metatable;
break;
default:
mt = hvalue(defaultmeta(L));
}
if (mt == hvalue(defaultmeta(L)))
res = 0;
else {
sethvalue(L->top, mt);
api_incr_top(L);
res = 1;
}
lua_unlock(L);
return res;
}
LUA_API void lua_getglobals (lua_State *L, int index) {
StkId o;
lua_lock(L);
o = luaA_index(L, index);
setobj(L->top, isLfunction(o) ? &clvalue(o)->l.g : gt(L));
api_incr_top(L);
lua_unlock(L);
}
/*
** set functions (stack -> Lua)
*/
LUA_API void lua_settable (lua_State *L, int index) {
StkId t;
lua_lock(L);
api_checknelems(L, 2);
t = luaA_index(L, index);
luaV_settable(L, t, L->top - 2, L->top - 1);
L->top -= 2; /* pop index and value */
lua_unlock(L);
}
LUA_API void lua_rawset (lua_State *L, int index) {
StkId t;
lua_lock(L);
api_checknelems(L, 2);
t = luaA_index(L, index);
api_check(L, ttistable(t));
setobj(luaH_set(L, hvalue(t), L->top-2), L->top-1);
L->top -= 2;
lua_unlock(L);
}
LUA_API void lua_rawseti (lua_State *L, int index, int n) {
StkId o;
lua_lock(L);
api_checknelems(L, 1);
o = luaA_index(L, index);
api_check(L, ttistable(o));
setobj(luaH_setnum(L, hvalue(o), n), L->top-1);
L->top--;
lua_unlock(L);
}
LUA_API void lua_setmode (lua_State *L, int index, const char *mode) {
TObject *t;
lua_lock(L);
t = luaA_index(L, index);
api_check(L, ttistable(t));
hvalue(t)->mode &= ~(WEAKKEY | WEAKVALUE); /* clear bits */
if (strchr(mode, 'k')) hvalue(t)->mode |= WEAKKEY;
if (strchr(mode, 'v')) hvalue(t)->mode |= WEAKVALUE;
lua_unlock(L);
}
LUA_API int lua_setmetatable (lua_State *L, int objindex) {
TObject *obj, *mt;
int res = 1;
lua_lock(L);
api_checknelems(L, 1);
obj = luaA_index(L, objindex);
mt = (!ttisnil(L->top - 1)) ? L->top - 1 : defaultmeta(L);
api_check(L, ttistable(mt));
switch (ttype(obj)) {
case LUA_TTABLE: {
hvalue(obj)->metatable = hvalue(mt);
break;
}
case LUA_TUSERDATA: {
uvalue(obj)->uv.metatable = hvalue(mt);
break;
}
default: {
res = 0; /* cannot set */
break;
}
}
L->top--;
lua_unlock(L);
return res;
}
LUA_API int lua_setglobals (lua_State *L, int index) {
StkId o;
int res = 0;
lua_lock(L);
api_checknelems(L, 1);
o = luaA_index(L, index);
L->top--;
api_check(L, ttistable(L->top));
if (isLfunction(o)) {
res = 1;
clvalue(o)->l.g = *(L->top);
}
lua_unlock(L);
return res;
}
/*
** `load' and `call' functions (run Lua code)
*/
LUA_API void lua_call (lua_State *L, int nargs, int nresults) {
StkId func;
lua_lock(L);
api_checknelems(L, nargs+1);
func = L->top - (nargs+1);
luaD_call(L, func, nresults);
lua_unlock(L);
}
LUA_API int lua_pcall (lua_State *L, int nargs, int nresults, int errfunc) {
int status;
ptrdiff_t func;
lua_lock(L);
func = (errfunc == 0) ? 0 : savestack(L, luaA_index(L, errfunc));
status = luaD_pcall(L, nargs, nresults, func);
lua_unlock(L);
return status;
}
LUA_API int lua_load (lua_State *L, lua_Chunkreader reader, void *data,
const char *chunkname) {
ZIO z;
int status;
int c;
lua_lock(L);
if (!chunkname) chunkname = "?";
luaZ_init(&z, reader, data, chunkname);
c = luaZ_lookahead(&z);
status = luaD_protectedparser(L, &z, (c == LUA_SIGNATURE[0]));
lua_unlock(L);
return status;
}
/*
** Garbage-collection functions
*/
/* GC values are expressed in Kbytes: #bytes/2^10 */
#define GCscale(x) (cast(int, (x)>>10))
#define GCunscale(x) (cast(lu_mem, (x)<<10))
LUA_API int lua_getgcthreshold (lua_State *L) {
int threshold;
lua_lock(L);
threshold = GCscale(G(L)->GCthreshold);
lua_unlock(L);
return threshold;
}
LUA_API int lua_getgccount (lua_State *L) {
int count;
lua_lock(L);
count = GCscale(G(L)->nblocks);
lua_unlock(L);
return count;
}
LUA_API void lua_setgcthreshold (lua_State *L, int newthreshold) {
lua_lock(L);
if (newthreshold > GCscale(ULONG_MAX))
G(L)->GCthreshold = ULONG_MAX;
else
G(L)->GCthreshold = GCunscale(newthreshold);
luaC_checkGC(L);
lua_unlock(L);
}
/*
** miscellaneous functions
*/
LUA_API int lua_error (lua_State *L) {
lua_lock(L);
api_checknelems(L, 1);
luaG_errormsg(L);
lua_unlock(L);
return 0; /* to avoid warnings */
}
LUA_API int lua_next (lua_State *L, int index) {
StkId t;
int more;
lua_lock(L);
t = luaA_index(L, index);
api_check(L, ttistable(t));
more = luaH_next(L, hvalue(t), L->top - 1);
if (more) {
api_incr_top(L);
}
else /* no more elements */
L->top -= 1; /* remove key */
lua_unlock(L);
return more;
}
LUA_API void lua_concat (lua_State *L, int n) {
lua_lock(L);
api_checknelems(L, n);
if (n >= 2) {
luaV_concat(L, n, L->top - L->ci->base - 1);
L->top -= (n-1);
luaC_checkGC(L);
}
else if (n == 0) { /* push empty string */
setsvalue(L->top, luaS_newlstr(L, NULL, 0));
api_incr_top(L);
}
/* else n == 1; nothing to do */
lua_unlock(L);
}
LUA_API void *lua_newuserdata (lua_State *L, size_t size) {
Udata *u;
lua_lock(L);
u = luaS_newudata(L, size);
setuvalue(L->top, u);
api_incr_top(L);
lua_unlock(L);
return u + 1;
}
LUA_API int lua_pushupvalues (lua_State *L) {
Closure *func;
int n, i;
lua_lock(L);
api_check(L, iscfunction(L->ci->base - 1));
func = clvalue(L->ci->base - 1);
n = func->c.nupvalues;
luaD_checkstack(L, n + LUA_MINSTACK);
for (i=0; i<n; i++) {
setobj(L->top, &func->c.upvalue[i]);
L->top++;
}
lua_unlock(L);
return n;
}

16
lapi.h
View File

@@ -1,16 +0,0 @@
/*
** $Id: lapi.h,v 1.20 2000/08/31 14:08:27 roberto Exp roberto $
** Auxiliary functions from Lua API
** See Copyright Notice in lua.h
*/
#ifndef lapi_h
#define lapi_h
#include "lobject.h"
void luaA_pushobject (lua_State *L, const TObject *o);
#endif

446
lauxlib.c
View File

@@ -1,446 +0,0 @@
/*
** $Id: lauxlib.c,v 1.82 2002/08/06 18:01:50 roberto Exp roberto $
** Auxiliary functions for building Lua libraries
** See Copyright Notice in lua.h
*/
#include <ctype.h>
#include <stdarg.h>
#include <stdio.h>
#include <string.h>
#ifndef lua_filerror
#include <errno.h>
#define lua_fileerror (strerror(errno))
#endif
/* This file uses only the official API of Lua.
** Any function declared here could be written as an application function.
*/
#include "lua.h"
#include "lauxlib.h"
/*
** {======================================================
** Error-report functions
** =======================================================
*/
LUALIB_API int luaL_argerror (lua_State *L, int narg, const char *extramsg) {
lua_Debug ar;
lua_getstack(L, 0, &ar);
lua_getinfo(L, "n", &ar);
if (strcmp(ar.namewhat, "method") == 0) {
narg--; /* do not count `self' */
if (narg == 0) /* error is in the self argument itself? */
return luaL_error(L,
"calling %s on bad self (perhaps using `:' instead of `.')",
ar.name);
}
if (ar.name == NULL)
ar.name = "?";
return luaL_error(L, "bad argument #%d to `%s' (%s)",
narg, ar.name, extramsg);
}
LUALIB_API int luaL_typerror (lua_State *L, int narg, const char *tname) {
const char *msg = lua_pushfstring(L, "%s expected, got %s",
tname, lua_typename(L, lua_type(L,narg)));
return luaL_argerror(L, narg, msg);
}
static void tag_error (lua_State *L, int narg, int tag) {
luaL_typerror(L, narg, lua_typename(L, tag));
}
LUALIB_API void luaL_where (lua_State *L, int level) {
lua_Debug ar;
if (lua_getstack(L, level, &ar)) { /* check function at level */
lua_getinfo(L, "Snl", &ar); /* get info about it */
if (ar.currentline > 0) { /* is there info? */
lua_pushfstring(L, "%s:%d: ", ar.short_src, ar.currentline);
return;
}
}
lua_pushliteral(L, ""); /* else, no information available... */
}
LUALIB_API int luaL_error (lua_State *L, const char *fmt, ...) {
va_list argp;
va_start(argp, fmt);
luaL_where(L, 1);
lua_pushvfstring(L, fmt, argp);
va_end(argp);
lua_pushliteral(L, "\n");
lua_concat(L, 3);
return lua_error(L);
}
/* }====================================================== */
LUALIB_API int luaL_findstring (const char *name, const char *const list[]) {
int i;
for (i=0; list[i]; i++)
if (strcmp(list[i], name) == 0)
return i;
return -1; /* name not found */
}
LUALIB_API void luaL_check_stack (lua_State *L, int space, const char *mes) {
if (!lua_checkstack(L, space))
luaL_error(L, "stack overflow (%s)", mes);
}
LUALIB_API void luaL_check_type (lua_State *L, int narg, int t) {
if (lua_type(L, narg) != t)
tag_error(L, narg, t);
}
LUALIB_API void luaL_check_any (lua_State *L, int narg) {
if (lua_type(L, narg) == LUA_TNONE)
luaL_argerror(L, narg, "value expected");
}
LUALIB_API const char *luaL_check_lstr (lua_State *L, int narg, size_t *len) {
const char *s = lua_tostring(L, narg);
if (!s) tag_error(L, narg, LUA_TSTRING);
if (len) *len = lua_strlen(L, narg);
return s;
}
LUALIB_API const char *luaL_opt_lstr (lua_State *L, int narg, const char *def, size_t *len) {
if (lua_isnoneornil(L, narg)) {
if (len)
*len = (def ? strlen(def) : 0);
return def;
}
else return luaL_check_lstr(L, narg, len);
}
LUALIB_API lua_Number luaL_check_number (lua_State *L, int narg) {
lua_Number d = lua_tonumber(L, narg);
if (d == 0 && !lua_isnumber(L, narg)) /* avoid extra test when d is not 0 */
tag_error(L, narg, LUA_TNUMBER);
return d;
}
LUALIB_API lua_Number luaL_opt_number (lua_State *L, int narg, lua_Number def) {
if (lua_isnoneornil(L, narg)) return def;
else return luaL_check_number(L, narg);
}
LUALIB_API int luaL_callmeta (lua_State *L, int obj, const char *event) {
if (!lua_getmetatable(L, obj)) /* no metatable? */
return 0;
lua_pushstring(L, event);
lua_rawget(L, -2);
if (lua_isnil(L, -1)) {
lua_pop(L, 2); /* remove metatable and metafield */
return 0;
}
lua_pushvalue(L, obj);
lua_call(L, 1, 1);
return 1;
}
LUALIB_API void luaL_openlib (lua_State *L, const luaL_reg *l, int nup) {
for (; l->name; l++) {
int i;
lua_pushstring(L, l->name);
for (i=0; i<nup; i++) /* copy upvalues to the top */
lua_pushvalue(L, -(nup+1));
lua_pushcclosure(L, l->func, nup);
lua_settable(L, -(nup+3));
}
lua_pop(L, nup);
}
LUALIB_API void luaL_opennamedlib (lua_State *L, const char *libname,
const luaL_reg *l, int nup) {
lua_pushstring(L, libname);
lua_insert(L, -(nup+1));
lua_newtable(L);
lua_insert(L, -(nup+1));
luaL_openlib(L, l, nup);
lua_settable(L, LUA_GLOBALSINDEX);
}
/*
** {======================================================
** Generic Buffer manipulation
** =======================================================
*/
#define buffempty(B) ((B)->p == (B)->buffer)
#define bufflen(B) ((B)->p - (B)->buffer)
#define bufffree(B) ((size_t)(LUAL_BUFFERSIZE - bufflen(B)))
#define LIMIT (LUA_MINSTACK/2)
static int emptybuffer (luaL_Buffer *B) {
size_t l = bufflen(B);
if (l == 0) return 0; /* put nothing on stack */
else {
lua_pushlstring(B->L, B->buffer, l);
B->p = B->buffer;
B->level++;
return 1;
}
}
static void adjuststack (luaL_Buffer *B) {
if (B->level > 1) {
lua_State *L = B->L;
int toget = 1; /* number of levels to concat */
size_t toplen = lua_strlen(L, -1);
do {
size_t l = lua_strlen(L, -(toget+1));
if (B->level - toget + 1 >= LIMIT || toplen > l) {
toplen += l;
toget++;
}
else break;
} while (toget < B->level);
lua_concat(L, toget);
B->level = B->level - toget + 1;
}
}
LUALIB_API char *luaL_prepbuffer (luaL_Buffer *B) {
if (emptybuffer(B))
adjuststack(B);
return B->buffer;
}
LUALIB_API void luaL_addlstring (luaL_Buffer *B, const char *s, size_t l) {
while (l--)
luaL_putchar(B, *s++);
}
LUALIB_API void luaL_addstring (luaL_Buffer *B, const char *s) {
luaL_addlstring(B, s, strlen(s));
}
LUALIB_API void luaL_pushresult (luaL_Buffer *B) {
emptybuffer(B);
lua_concat(B->L, B->level);
B->level = 1;
}
LUALIB_API void luaL_addvalue (luaL_Buffer *B) {
lua_State *L = B->L;
size_t vl = lua_strlen(L, -1);
if (vl <= bufffree(B)) { /* fit into buffer? */
memcpy(B->p, lua_tostring(L, -1), vl); /* put it there */
B->p += vl;
lua_pop(L, 1); /* remove from stack */
}
else {
if (emptybuffer(B))
lua_insert(L, -2); /* put buffer before new value */
B->level++; /* add new value into B stack */
adjuststack(B);
}
}
LUALIB_API void luaL_buffinit (lua_State *L, luaL_Buffer *B) {
B->L = L;
B->p = B->buffer;
B->level = 0;
}
/* }====================================================== */
LUALIB_API int luaL_ref (lua_State *L, int t) {
int ref;
lua_rawgeti(L, t, 0); /* get first free element */
ref = (int)lua_tonumber(L, -1); /* ref = t[0] */
lua_pop(L, 1); /* remove it from stack */
if (ref != 0) { /* any free element? */
lua_rawgeti(L, t, ref); /* remove it from list */
lua_rawseti(L, t, 0); /* (that is, t[0] = t[ref]) */
}
else { /* no free elements */
lua_pushliteral(L, "n");
lua_pushvalue(L, -1);
lua_rawget(L, t); /* get t.n */
ref = (int)lua_tonumber(L, -1) + 1; /* ref = t.n + 1 */
lua_pop(L, 1); /* pop t.n */
lua_pushnumber(L, ref);
lua_rawset(L, t); /* t.n = t.n + 1 */
}
lua_rawseti(L, t, ref);
return ref;
}
LUALIB_API void luaL_unref (lua_State *L, int t, int ref) {
if (ref >= 0) {
lua_rawgeti(L, t, 0);
lua_rawseti(L, t, ref); /* t[ref] = t[0] */
lua_pushnumber(L, ref);
lua_rawseti(L, t, 0); /* t[0] = ref */
}
}
/*
** {======================================================
** Load functions
** =======================================================
*/
typedef struct LoadF {
FILE *f;
char buff[LUAL_BUFFERSIZE];
} LoadF;
static const char *getF (lua_State *L, void *ud, size_t *size) {
LoadF *lf = (LoadF *)ud;
(void)L;
if (feof(lf->f)) return NULL;
*size = fread(lf->buff, 1, LUAL_BUFFERSIZE, lf->f);
return (*size > 0) ? lf->buff : NULL;
}
static int errfile (lua_State *L, const char *filename) {
if (filename == NULL) filename = "stdin";
lua_pushfstring(L, "cannot read %s: %s", filename, lua_fileerror);
return LUA_ERRFILE;
}
LUALIB_API int luaL_loadfile (lua_State *L, const char *filename) {
LoadF lf;
int status;
int c;
int old_top = lua_gettop(L);
lf.f = (filename == NULL) ? stdin : fopen(filename, "r");
if (lf.f == NULL) return errfile(L, filename); /* unable to open file */
c = ungetc(getc(lf.f), lf.f);
if (!(isspace(c) || isprint(c)) && lf.f != stdin) { /* binary file? */
fclose(lf.f);
lf.f = fopen(filename, "rb"); /* reopen in binary mode */
if (lf.f == NULL) return errfile(L, filename); /* unable to reopen file */
}
if (filename == NULL)
lua_pushliteral(L, "=stdin");
else
lua_pushfstring(L, "@%s", filename);
status = lua_load(L, getF, &lf, lua_tostring(L, -1));
lua_remove(L, old_top+1); /* remove filename from stack */
if (ferror(lf.f)) {
lua_settop(L, old_top); /* ignore results from `lua_load' */
return errfile(L, filename);
}
if (lf.f != stdin)
fclose(lf.f);
return status;
}
typedef struct LoadS {
const char *s;
size_t size;
} LoadS;
static const char *getS (lua_State *L, void *ud, size_t *size) {
LoadS *ls = (LoadS *)ud;
(void)L;
if (ls->size == 0) return NULL;
*size = ls->size;
ls->size = 0;
return ls->s;
}
LUALIB_API int luaL_loadbuffer (lua_State *L, const char *buff, size_t size,
const char *name) {
LoadS ls;
ls.s = buff;
ls.size = size;
return lua_load(L, getS, &ls, name);
}
/* }====================================================== */
/*
** {======================================================
** compatibility code
** =======================================================
*/
static void callalert (lua_State *L, int status) {
if (status != 0) {
lua_getglobal(L, "_ALERT");
lua_insert(L, -2);
lua_call(L, 1, 0);
lua_pop(L, 1);
}
}
static int aux_do (lua_State *L, int status) {
if (status == 0) { /* parse OK? */
status = lua_pcall(L, 0, LUA_MULTRET, 0); /* call main */
}
callalert(L, status);
return status;
}
LUALIB_API int lua_dofile (lua_State *L, const char *filename) {
return aux_do(L, luaL_loadfile(L, filename));
}
LUALIB_API int lua_dobuffer (lua_State *L, const char *buff, size_t size,
const char *name) {
return aux_do(L, luaL_loadbuffer(L, buff, size, name));
}
LUALIB_API int lua_dostring (lua_State *L, const char *str) {
return lua_dobuffer(L, str, strlen(str), str);
}
/* }====================================================== */

130
lauxlib.h
View File

@@ -1,130 +0,0 @@
/*
** $Id: lauxlib.h,v 1.51 2002/07/01 19:23:58 roberto Exp roberto $
** Auxiliary functions for building Lua libraries
** See Copyright Notice in lua.h
*/
#ifndef lauxlib_h
#define lauxlib_h
#include <stddef.h>
#include <stdio.h>
#include "lua.h"
#ifndef LUALIB_API
#define LUALIB_API extern
#endif
typedef struct luaL_reg {
const char *name;
lua_CFunction func;
} luaL_reg;
LUALIB_API void luaL_openlib (lua_State *L, const luaL_reg *l, int nup);
LUALIB_API void luaL_opennamedlib (lua_State *L, const char *libname,
const luaL_reg *l, int nup);
LUALIB_API int luaL_callmeta (lua_State *L, int obj, const char *event);
LUALIB_API int luaL_typerror (lua_State *L, int narg, const char *tname);
LUALIB_API int luaL_argerror (lua_State *L, int numarg, const char *extramsg);
LUALIB_API const char *luaL_check_lstr (lua_State *L, int numArg,
size_t *len);
LUALIB_API const char *luaL_opt_lstr (lua_State *L, int numArg,
const char *def, size_t *len);
LUALIB_API lua_Number luaL_check_number (lua_State *L, int numArg);
LUALIB_API lua_Number luaL_opt_number (lua_State *L, int nArg, lua_Number def);
LUALIB_API void luaL_check_stack (lua_State *L, int space, const char *msg);
LUALIB_API void luaL_check_type (lua_State *L, int narg, int t);
LUALIB_API void luaL_check_any (lua_State *L, int narg);
LUALIB_API void luaL_where (lua_State *L, int level);
LUALIB_API int luaL_error (lua_State *L, const char *fmt, ...);
LUALIB_API int luaL_findstring (const char *name,
const char *const list[]);
LUALIB_API int luaL_ref (lua_State *L, int t);
LUALIB_API void luaL_unref (lua_State *L, int t, int ref);
LUALIB_API int luaL_loadfile (lua_State *L, const char *filename);
LUALIB_API int luaL_loadbuffer (lua_State *L, const char *buff, size_t size,
const char *name);
/*
** ===============================================================
** some useful macros
** ===============================================================
*/
#define luaL_arg_check(L, cond,numarg,extramsg) if (!(cond)) \
luaL_argerror(L, numarg,extramsg)
#define luaL_check_string(L,n) (luaL_check_lstr(L, (n), NULL))
#define luaL_opt_string(L,n,d) (luaL_opt_lstr(L, (n), (d), NULL))
#define luaL_check_int(L,n) ((int)luaL_check_number(L, n))
#define luaL_check_long(L,n) ((long)luaL_check_number(L, n))
#define luaL_opt_int(L,n,d) ((int)luaL_opt_number(L, n,d))
#define luaL_opt_long(L,n,d) ((long)luaL_opt_number(L, n,d))
/*
** {======================================================
** Generic Buffer manipulation
** =======================================================
*/
#ifndef LUAL_BUFFERSIZE
#define LUAL_BUFFERSIZE BUFSIZ
#endif
typedef struct luaL_Buffer {
char *p; /* current position in buffer */
int level;
lua_State *L;
char buffer[LUAL_BUFFERSIZE];
} luaL_Buffer;
#define luaL_putchar(B,c) \
((void)((B)->p < ((B)->buffer+LUAL_BUFFERSIZE) || luaL_prepbuffer(B)), \
(*(B)->p++ = (char)(c)))
#define luaL_addsize(B,n) ((B)->p += (n))
LUALIB_API void luaL_buffinit (lua_State *L, luaL_Buffer *B);
LUALIB_API char *luaL_prepbuffer (luaL_Buffer *B);
LUALIB_API void luaL_addlstring (luaL_Buffer *B, const char *s, size_t l);
LUALIB_API void luaL_addstring (luaL_Buffer *B, const char *s);
LUALIB_API void luaL_addvalue (luaL_Buffer *B);
LUALIB_API void luaL_pushresult (luaL_Buffer *B);
/* }====================================================== */
/*
** Compatibility macros
*/
#define luaL_checktype luaL_check_type
#define luaL_checkany luaL_check_any
LUALIB_API int lua_dofile (lua_State *L, const char *filename);
LUALIB_API int lua_dostring (lua_State *L, const char *str);
LUALIB_API int lua_dobuffer (lua_State *L, const char *buff, size_t size,
const char *name);
#endif

View File

@@ -1,625 +0,0 @@
/*
** $Id: lbaselib.c,v 1.96 2002/08/06 18:54:18 roberto Exp roberto $
** Basic library
** See Copyright Notice in lua.h
*/
#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "lua.h"
#include "lauxlib.h"
#include "lualib.h"
/*
** If your system does not support `stdout', you can just remove this function.
** If you need, you can define your own `print' function, following this
** model but changing `fputs' to put the strings at a proper place
** (a console window or a log file, for instance).
*/
static int luaB_print (lua_State *L) {
int n = lua_gettop(L); /* number of arguments */
int i;
lua_getglobal(L, "tostring");
for (i=1; i<=n; i++) {
const char *s;
lua_pushvalue(L, -1); /* function to be called */
lua_pushvalue(L, i); /* value to print */
lua_call(L, 1, 1);
s = lua_tostring(L, -1); /* get result */
if (s == NULL)
return luaL_error(L, "`tostring' must return a string to `print'");
if (i>1) fputs("\t", stdout);
fputs(s, stdout);
lua_pop(L, 1); /* pop result */
}
fputs("\n", stdout);
return 0;
}
static int luaB_tonumber (lua_State *L) {
int base = luaL_opt_int(L, 2, 10);
if (base == 10) { /* standard conversion */
luaL_check_any(L, 1);
if (lua_isnumber(L, 1)) {
lua_pushnumber(L, lua_tonumber(L, 1));
return 1;
}
}
else {
const char *s1 = luaL_check_string(L, 1);
char *s2;
unsigned long n;
luaL_arg_check(L, 2 <= base && base <= 36, 2, "base out of range");
n = strtoul(s1, &s2, base);
if (s1 != s2) { /* at least one valid digit? */
while (isspace((unsigned char)(*s2))) s2++; /* skip trailing spaces */
if (*s2 == '\0') { /* no invalid trailing characters? */
lua_pushnumber(L, n);
return 1;
}
}
}
lua_pushnil(L); /* else not a number */
return 1;
}
static int luaB_error (lua_State *L) {
int level = luaL_opt_int(L, 2, 1);
luaL_check_any(L, 1);
if (!lua_isstring(L, 1) || level == 0)
lua_pushvalue(L, 1); /* propagate error mesage without changes */
else { /* add extra information */
luaL_where(L, level);
lua_pushvalue(L, 1);
lua_pushliteral(L, "\n");
lua_concat(L, 3);
}
return lua_error(L);
}
static int luaB_getmode (lua_State *L) {
luaL_check_type(L, 1, LUA_TTABLE);
lua_pushstring(L, lua_getmode(L, 1));
return 1;
}
static int luaB_setmode (lua_State *L) {
luaL_check_type(L, 1, LUA_TTABLE);
lua_setmode(L, 1, luaL_check_string(L, 2));
lua_settop(L, 1);
return 1;
}
static int luaB_getmetatable (lua_State *L) {
luaL_check_any(L, 1);
if (!lua_getmetatable(L, 1)) {
lua_pushnil(L);
return 1; /* no metatable */
}
else {
lua_pushliteral(L, "__metatable");
lua_rawget(L, -2);
if (lua_isnil(L, -1))
lua_pop(L, 1);
/* otherwise returns metatable.__metatable */
}
return 1;
}
static int luaB_setmetatable (lua_State *L) {
int t = lua_type(L, 2);
luaL_check_type(L, 1, LUA_TTABLE);
luaL_arg_check(L, t == LUA_TNIL || t == LUA_TTABLE, 2,
"nil or table expected");
lua_settop(L, 2);
lua_setmetatable(L, 1);
return 1;
}
static void getfunc (lua_State *L) {
if (lua_isfunction(L, 1)) lua_pushvalue(L, 1);
else {
lua_Debug ar;
int level = luaL_opt_int(L, 1, 1);
luaL_arg_check(L, level >= 0, 1, "level must be non-negative");
if (lua_getstack(L, level, &ar) == 0)
luaL_argerror(L, 1, "invalid level");
lua_getinfo(L, "f", &ar);
}
}
static int luaB_getglobals (lua_State *L) {
getfunc(L);
lua_getglobals(L, -1);
return 1;
}
static int luaB_setglobals (lua_State *L) {
luaL_check_type(L, 2, LUA_TTABLE);
getfunc(L);
lua_pushvalue(L, 2);
if (lua_setglobals(L, -2) == 0)
luaL_error(L, "cannot change global table of given function");
return 0;
}
static int luaB_rawequal (lua_State *L) {
luaL_check_any(L, 1);
luaL_check_any(L, 2);
lua_pushboolean(L, lua_rawequal(L, 1, 2));
return 1;
}
static int luaB_rawget (lua_State *L) {
luaL_check_type(L, 1, LUA_TTABLE);
luaL_check_any(L, 2);
lua_rawget(L, 1);
return 1;
}
static int luaB_rawset (lua_State *L) {
luaL_check_type(L, 1, LUA_TTABLE);
luaL_check_any(L, 2);
luaL_check_any(L, 3);
lua_rawset(L, 1);
return 1;
}
static int luaB_gcinfo (lua_State *L) {
lua_pushnumber(L, lua_getgccount(L));
lua_pushnumber(L, lua_getgcthreshold(L));
return 2;
}
static int luaB_collectgarbage (lua_State *L) {
lua_setgcthreshold(L, luaL_opt_int(L, 1, 0));
return 0;
}
static int luaB_type (lua_State *L) {
luaL_check_any(L, 1);
lua_pushstring(L, lua_typename(L, lua_type(L, 1)));
return 1;
}
static int luaB_next (lua_State *L) {
luaL_check_type(L, 1, LUA_TTABLE);
lua_settop(L, 2); /* create a 2nd argument if there isn't one */
if (lua_next(L, 1))
return 2;
else {
lua_pushnil(L);
return 1;
}
}
static int luaB_pairs (lua_State *L) {
luaL_check_type(L, 1, LUA_TTABLE);
lua_getglobal(L, "next"); /* return generator, */
lua_pushvalue(L, 1); /* state, */
lua_pushnil(L); /* and initial value */
return 3;
}
static int luaB_ipairs (lua_State *L) {
lua_Number i = lua_tonumber(L, 2);
luaL_check_type(L, 1, LUA_TTABLE);
if (i == 0 && lua_isnull(L, 2)) { /* `for' start? */
lua_getglobal(L, "ipairs"); /* return generator, */
lua_pushvalue(L, 1); /* state, */
lua_pushnumber(L, 0); /* and initial value */
return 3;
}
else { /* `for' step */
i++; /* next value */
lua_pushnumber(L, i);
lua_rawgeti(L, 1, (int)i);
return (lua_isnil(L, -1)) ? 0 : 2;
}
}
static int passresults (lua_State *L, int status) {
if (status == 0) return 1;
else {
lua_pushnil(L);
lua_insert(L, -2);
return 2;
}
}
static int luaB_loadstring (lua_State *L) {
size_t l;
const char *s = luaL_check_lstr(L, 1, &l);
const char *chunkname = luaL_opt_string(L, 2, s);
return passresults(L, luaL_loadbuffer(L, s, l, chunkname));
}
static int luaB_loadfile (lua_State *L) {
const char *fname = luaL_opt_string(L, 1, NULL);
return passresults(L, luaL_loadfile(L, fname));
}
static int luaB_dofile (lua_State *L) {
const char *fname = luaL_opt_string(L, 1, NULL);
int status = luaL_loadfile(L, fname);
if (status != 0) lua_error(L);
lua_call(L, 0, LUA_MULTRET);
return lua_gettop(L) - 1;
}
static int luaB_assert (lua_State *L) {
luaL_check_any(L, 1);
if (!lua_toboolean(L, 1))
return luaL_error(L, "%s", luaL_opt_string(L, 2, "assertion failed!"));
lua_settop(L, 1);
return 1;
}
static int luaB_unpack (lua_State *L) {
int n, i;
luaL_check_type(L, 1, LUA_TTABLE);
lua_pushliteral(L, "n");
lua_rawget(L, 1);
n = (lua_isnumber(L, -1)) ? (int)lua_tonumber(L, -1) : -1;
for (i=0; i<n || n==-1; i++) { /* push arg[1...n] */
luaL_check_stack(L, LUA_MINSTACK, "table too big to unpack");
lua_rawgeti(L, 1, i+1);
if (n == -1) { /* no explicit limit? */
if (lua_isnil(L, -1)) { /* stop at first `nil' element */
lua_pop(L, 1); /* remove `nil' */
break;
}
}
}
return i;
}
static int luaB_pcall (lua_State *L) {
int status;
luaL_check_any(L, 1);
status = lua_pcall(L, lua_gettop(L) - 1, LUA_MULTRET, 0);
lua_pushboolean(L, (status == 0));
lua_insert(L, 1);
return lua_gettop(L); /* return status + all results */
}
static int luaB_xpcall (lua_State *L) {
int status;
luaL_check_any(L, 2);
lua_settop(L, 2);
lua_insert(L, 1); /* put error function under function to be called */
status = lua_pcall(L, 0, LUA_MULTRET, 1);
lua_pushboolean(L, (status == 0));
lua_replace(L, 1);
return lua_gettop(L); /* return status + all results */
}
static int luaB_tostring (lua_State *L) {
char buff[64];
luaL_checkany(L, 1);
if (luaL_callmeta(L, 1, "__tostring")) /* is there a metafield? */
return 1; /* use its value */
switch (lua_type(L, 1)) {
case LUA_TNUMBER:
lua_pushstring(L, lua_tostring(L, 1));
return 1;
case LUA_TSTRING:
lua_pushvalue(L, 1);
return 1;
case LUA_TBOOLEAN:
lua_pushstring(L, (lua_toboolean(L, 1) ? "true" : "false"));
return 1;
case LUA_TTABLE:
sprintf(buff, "table: %p", lua_topointer(L, 1));
break;
case LUA_TFUNCTION:
sprintf(buff, "function: %p", lua_topointer(L, 1));
break;
case LUA_TUSERDATA:
case LUA_TLIGHTUSERDATA:
sprintf(buff, "userdata: %p", lua_touserdata(L, 1));
break;
case LUA_TNIL:
lua_pushliteral(L, "nil");
return 1;
}
lua_pushstring(L, buff);
return 1;
}
static int luaB_newproxy (lua_State *L) {
lua_settop(L, 1);
lua_newuserdata(L, 0); /* create proxy */
if (lua_toboolean(L, 1) == 0)
return 1; /* no metatable */
else if (lua_isboolean(L, 1)) {
lua_newtable(L); /* create a new metatable `m' ... */
lua_pushvalue(L, -1); /* ... and mark `m' as a valid metatable */
lua_pushboolean(L, 1);
lua_rawset(L, lua_upvalueindex(1)); /* weaktable[m] = true */
}
else {
int validproxy = 0; /* to check if weaktable[metatable(u)] == true */
if (lua_getmetatable(L, 1)) {
lua_rawget(L, lua_upvalueindex(1));
validproxy = lua_toboolean(L, -1);
lua_pop(L, 1); /* remove value */
}
luaL_arg_check(L, validproxy, 1, "boolean/proxy expected");
lua_getmetatable(L, 1); /* metatable is valid; get it */
}
lua_setmetatable(L, 2);
return 1;
}
/*
** {======================================================
** `require' function
** =======================================================
*/
/* name of global that holds table with loaded packages */
#define REQTAB "_LOADED"
/* name of global that holds the search path for packages */
#define LUA_PATH "LUA_PATH"
#ifndef LUA_PATH_SEP
#define LUA_PATH_SEP ';'
#endif
#ifndef LUA_PATH_DEFAULT
#define LUA_PATH_DEFAULT "?;?.lua"
#endif
static const char *getpath (lua_State *L) {
const char *path;
lua_getglobal(L, LUA_PATH); /* try global variable */
path = lua_tostring(L, -1);
lua_pop(L, 1);
if (path) return path;
path = getenv(LUA_PATH); /* else try environment variable */
if (path) return path;
return LUA_PATH_DEFAULT; /* else use default */
}
static const char *pushnextpath (lua_State *L, const char *path) {
const char *l;
if (*path == '\0') return NULL; /* no more pathes */
if (*path == LUA_PATH_SEP) path++; /* skip separator */
l = strchr(path, LUA_PATH_SEP); /* find next separator */
if (l == NULL) l = path+strlen(path);
lua_pushlstring(L, path, l - path); /* directory name */
return l;
}
static void pushcomposename (lua_State *L) {
const char *path = lua_tostring(L, -1);
const char *wild = strchr(path, '?');
if (wild == NULL) return; /* no wild char; path is the file name */
lua_pushlstring(L, path, wild - path);
lua_pushvalue(L, 1); /* package name */
lua_pushstring(L, wild + 1);
lua_concat(L, 3);
}
static int luaB_require (lua_State *L) {
const char *path;
int status = LUA_ERRFILE; /* not found (yet) */
luaL_check_string(L, 1);
lua_settop(L, 1);
lua_pushvalue(L, 1);
lua_setglobal(L, "_REQUIREDNAME");
lua_getglobal(L, REQTAB);
if (!lua_istable(L, 2)) return luaL_error(L, "`" REQTAB "' is not a table");
path = getpath(L);
lua_pushvalue(L, 1); /* check package's name in book-keeping table */
lua_rawget(L, 2);
if (!lua_isnil(L, -1)) /* is it there? */
return 0; /* package is already loaded */
else { /* must load it */
while (status == LUA_ERRFILE) {
lua_settop(L, 3); /* reset stack position */
if ((path = pushnextpath(L, path)) == NULL) break;
pushcomposename(L);
status = luaL_loadfile(L, lua_tostring(L, -1)); /* try to load it */
}
}
switch (status) {
case 0: {
lua_call(L, 0, 0); /* run loaded module */
lua_pushvalue(L, 1);
lua_pushboolean(L, 1);
lua_rawset(L, 2); /* mark it as loaded */
return 0;
}
case LUA_ERRFILE: { /* file not found */
return luaL_error(L, "could not load package `%s' from path `%s'",
lua_tostring(L, 1), getpath(L));
}
default: {
return luaL_error(L, "error loading package\n%s", lua_tostring(L, -1));
}
}
}
/* }====================================================== */
static const luaL_reg base_funcs[] = {
{"error", luaB_error},
{"getmetatable", luaB_getmetatable},
{"setmetatable", luaB_setmetatable},
{"getglobals", luaB_getglobals},
{"setglobals", luaB_setglobals},
{"getmode", luaB_getmode},
{"setmode", luaB_setmode},
{"next", luaB_next},
{"ipairs", luaB_ipairs},
{"pairs", luaB_pairs},
{"print", luaB_print},
{"tonumber", luaB_tonumber},
{"tostring", luaB_tostring},
{"type", luaB_type},
{"assert", luaB_assert},
{"unpack", luaB_unpack},
{"rawequal", luaB_rawequal},
{"rawget", luaB_rawget},
{"rawset", luaB_rawset},
{"pcall", luaB_pcall},
{"xpcall", luaB_xpcall},
{"collectgarbage", luaB_collectgarbage},
{"gcinfo", luaB_gcinfo},
{"loadfile", luaB_loadfile},
{"dofile", luaB_dofile},
{"loadstring", luaB_loadstring},
{"require", luaB_require},
{NULL, NULL}
};
/*
** {======================================================
** Coroutine library
** =======================================================
*/
static int luaB_resume (lua_State *L) {
lua_State *co = (lua_State *)lua_unboxpointer(L, lua_upvalueindex(1));
int status;
lua_settop(L, 0);
status = lua_resume(L, co);
if (status != 0)
return lua_error(L);
return lua_gettop(L);
}
static int gc_coroutine (lua_State *L) {
lua_State *co = (lua_State *)lua_unboxpointer(L, 1);
lua_closethread(L, co);
return 0;
}
static int luaB_coroutine (lua_State *L) {
lua_State *NL;
int ref;
int i;
int n = lua_gettop(L);
luaL_arg_check(L, lua_isfunction(L, 1) && !lua_iscfunction(L, 1), 1,
"Lua function expected");
NL = lua_newthread(L);
if (NL == NULL) return luaL_error(L, "unable to create new thread");
/* move function and arguments from L to NL */
for (i=0; i<n; i++) {
ref = lua_ref(L, 1);
lua_getref(NL, ref);
lua_insert(NL, 1);
lua_unref(L, ref);
}
lua_cobegin(NL, n-1);
lua_boxpointer(L, NL);
lua_pushliteral(L, "Coroutine");
lua_rawget(L, LUA_REGISTRYINDEX);
lua_setmetatable(L, -2);
lua_pushcclosure(L, luaB_resume, 1);
return 1;
}
static int luaB_yield (lua_State *L) {
return lua_yield(L, lua_gettop(L));
}
static const luaL_reg co_funcs[] = {
{"create", luaB_coroutine},
{"yield", luaB_yield},
{NULL, NULL}
};
static void co_open (lua_State *L) {
luaL_opennamedlib(L, LUA_COLIBNAME, co_funcs, 0);
/* create metatable for coroutines */
lua_pushliteral(L, "Coroutine");
lua_newtable(L);
lua_pushliteral(L, "__gc");
lua_pushcfunction(L, gc_coroutine);
lua_rawset(L, -3);
lua_rawset(L, LUA_REGISTRYINDEX);
}
/* }====================================================== */
static void base_open (lua_State *L) {
lua_pushliteral(L, "_G");
lua_pushvalue(L, LUA_GLOBALSINDEX);
luaL_openlib(L, base_funcs, 0); /* open lib into global table */
lua_pushliteral(L, "_VERSION");
lua_pushliteral(L, LUA_VERSION);
lua_rawset(L, -3); /* set global _VERSION */
/* `newproxy' needs a weaktable as upvalue */
lua_pushliteral(L, "newproxy");
lua_newtable(L); /* new table `w' */
lua_setmode(L, -1, "k");
lua_pushcclosure(L, luaB_newproxy, 1);
lua_rawset(L, -3); /* set global `newproxy' */
lua_rawset(L, -1); /* set global _G */
}
LUALIB_API int lua_baselibopen (lua_State *L) {
base_open(L);
co_open(L);
lua_newtable(L);
lua_setglobal(L, REQTAB);
return 0;
}

744
lcode.c
View File

@@ -1,744 +0,0 @@
/*
** $Id: lcode.c,v 1.108 2002/06/13 13:39:55 roberto Exp $
** Code generator for Lua
** See Copyright Notice in lua.h
*/
#include <stdlib.h>
#include "lua.h"
#include "lcode.h"
#include "ldebug.h"
#include "ldo.h"
#include "llex.h"
#include "lmem.h"
#include "lobject.h"
#include "lopcodes.h"
#include "lparser.h"
#include "ltable.h"
#define hasjumps(e) ((e)->t != (e)->f)
void luaK_nil (FuncState *fs, int from, int n) {
Instruction *previous;
if (fs->pc > fs->lasttarget && /* no jumps to current position? */
GET_OPCODE(*(previous = &fs->f->code[fs->pc-1])) == OP_LOADNIL) {
int pfrom = GETARG_A(*previous);
int pto = GETARG_B(*previous);
if (pfrom <= from && from <= pto+1) { /* can connect both? */
if (from+n-1 > pto)
SETARG_B(*previous, from+n-1);
return;
}
}
luaK_codeABC(fs, OP_LOADNIL, from, from+n-1, 0); /* else no optimization */
}
int luaK_jump (FuncState *fs) {
int jpc = fs->jpc; /* save list of jumps to here */
int j;
fs->jpc = NO_JUMP;
j = luaK_codeAsBx(fs, OP_JMP, 0, NO_JUMP);
luaK_concat(fs, &j, jpc); /* keep them on hold */
return j;
}
static int luaK_condjump (FuncState *fs, OpCode op, int A, int B, int C) {
luaK_codeABC(fs, op, A, B, C);
return luaK_jump(fs);
}
static void luaK_fixjump (FuncState *fs, int pc, int dest) {
Instruction *jmp = &fs->f->code[pc];
int offset = dest-(pc+1);
lua_assert(dest != NO_JUMP);
if (abs(offset) > MAXARG_sBx)
luaX_syntaxerror(fs->ls, "control structure too long");
SETARG_sBx(*jmp, offset);
}
/*
** returns current `pc' and marks it as a jump target (to avoid wrong
** optimizations with consecutive instructions not in the same basic block).
*/
int luaK_getlabel (FuncState *fs) {
fs->lasttarget = fs->pc;
return fs->pc;
}
static int luaK_getjump (FuncState *fs, int pc) {
int offset = GETARG_sBx(fs->f->code[pc]);
if (offset == NO_JUMP) /* point to itself represents end of list */
return NO_JUMP; /* end of list */
else
return (pc+1)+offset; /* turn offset into absolute position */
}
static Instruction *getjumpcontrol (FuncState *fs, int pc) {
Instruction *pi = &fs->f->code[pc];
if (pc >= 1 && testOpMode(GET_OPCODE(*(pi-1)), OpModeT))
return pi-1;
else
return pi;
}
/*
** check whether list has any jump that do not produce a value
** (or produce an inverted value)
*/
static int need_value (FuncState *fs, int list, int cond) {
for (; list != NO_JUMP; list = luaK_getjump(fs, list)) {
Instruction i = *getjumpcontrol(fs, list);
if (GET_OPCODE(i) != OP_TEST || GETARG_B(i) != cond) return 1;
}
return 0; /* not found */
}
static void patchtestreg (Instruction *i, int reg) {
if (reg == NO_REG) reg = GETARG_C(*i);
SETARG_A(*i, reg);
}
static void luaK_patchlistaux (FuncState *fs, int list,
int ttarget, int treg, int ftarget, int freg, int dtarget) {
while (list != NO_JUMP) {
int next = luaK_getjump(fs, list);
Instruction *i = getjumpcontrol(fs, list);
if (GET_OPCODE(*i) != OP_TEST) {
lua_assert(dtarget != NO_JUMP);
luaK_fixjump(fs, list, dtarget); /* jump to default target */
}
else {
if (GETARG_B(*i)) {
lua_assert(ttarget != NO_JUMP);
patchtestreg(i, treg);
luaK_fixjump(fs, list, ttarget);
}
else {
lua_assert(ftarget != NO_JUMP);
patchtestreg(i, freg);
luaK_fixjump(fs, list, ftarget);
}
}
list = next;
}
}
static void luaK_dischargejpc (FuncState *fs) {
luaK_patchlistaux(fs, fs->jpc, fs->pc, NO_REG, fs->pc, NO_REG, fs->pc);
fs->jpc = NO_JUMP;
}
void luaK_patchlist (FuncState *fs, int list, int target) {
if (target == fs->pc)
luaK_patchtohere(fs, list);
else {
lua_assert(target < fs->pc);
luaK_patchlistaux(fs, list, target, NO_REG, target, NO_REG, target);
}
}
void luaK_patchtohere (FuncState *fs, int list) {
luaK_getlabel(fs);
luaK_concat(fs, &fs->jpc, list);
}
void luaK_concat (FuncState *fs, int *l1, int l2) {
if (l2 == NO_JUMP) return;
else if (*l1 == NO_JUMP)
*l1 = l2;
else {
int list = *l1;
int next;
while ((next = luaK_getjump(fs, list)) != NO_JUMP) /* find last element */
list = next;
luaK_fixjump(fs, list, l2);
}
}
static void luaK_checkstack (FuncState *fs, int n) {
int newstack = fs->freereg + n;
if (newstack > fs->f->maxstacksize) {
if (newstack >= MAXSTACK)
luaX_syntaxerror(fs->ls, "function or expression too complex");
fs->f->maxstacksize = cast(lu_byte, newstack);
}
}
void luaK_reserveregs (FuncState *fs, int n) {
luaK_checkstack(fs, n);
fs->freereg += n;
}
static void freereg (FuncState *fs, int reg) {
if (reg >= fs->nactvar && reg < MAXSTACK) {
fs->freereg--;
lua_assert(reg == fs->freereg);
}
}
static void freeexp (FuncState *fs, expdesc *e) {
if (e->k == VNONRELOC)
freereg(fs, e->info);
}
static int addk (FuncState *fs, TObject *k, TObject *v) {
const TObject *index = luaH_get(fs->h, k);
if (ttisnumber(index)) {
lua_assert(luaO_rawequalObj(&fs->f->k[cast(int, nvalue(index))], v));
return cast(int, nvalue(index));
}
else { /* constant not found; create a new entry */
Proto *f = fs->f;
luaM_growvector(fs->L, f->k, fs->nk, f->sizek, TObject,
MAXARG_Bx, "constant table overflow");
setobj(&f->k[fs->nk], v);
setnvalue(luaH_set(fs->L, fs->h, k), fs->nk);
return fs->nk++;
}
}
int luaK_stringK (FuncState *fs, TString *s) {
TObject o;
setsvalue(&o, s);
return addk(fs, &o, &o);
}
int luaK_numberK (FuncState *fs, lua_Number r) {
TObject o;
setnvalue(&o, r);
return addk(fs, &o, &o);
}
static int nil_constant (FuncState *fs) {
TObject k, v;
setnilvalue(&v);
sethvalue(&k, fs->h); /* cannot use nil as key; instead use table itself */
return addk(fs, &k, &v);
}
void luaK_setcallreturns (FuncState *fs, expdesc *e, int nresults) {
if (e->k == VCALL) { /* expression is an open function call? */
SETARG_C(getcode(fs, e), nresults+1);
if (nresults == 1) { /* `regular' expression? */
e->k = VNONRELOC;
e->info = GETARG_A(getcode(fs, e));
}
}
}
void luaK_dischargevars (FuncState *fs, expdesc *e) {
switch (e->k) {
case VLOCAL: {
e->k = VNONRELOC;
break;
}
case VUPVAL: {
e->info = luaK_codeABC(fs, OP_GETUPVAL, 0, e->info, 0);
e->k = VRELOCABLE;
break;
}
case VGLOBAL: {
e->info = luaK_codeABx(fs, OP_GETGLOBAL, 0, e->info);
e->k = VRELOCABLE;
break;
}
case VINDEXED: {
freereg(fs, e->aux);
freereg(fs, e->info);
e->info = luaK_codeABC(fs, OP_GETTABLE, 0, e->info, e->aux);
e->k = VRELOCABLE;
break;
}
case VCALL: {
luaK_setcallreturns(fs, e, 1);
break;
}
default: break; /* there is one value available (somewhere) */
}
}
static int code_label (FuncState *fs, int A, int b, int jump) {
luaK_getlabel(fs); /* those instructions may be jump targets */
return luaK_codeABC(fs, OP_LOADBOOL, A, b, jump);
}
static void discharge2reg (FuncState *fs, expdesc *e, int reg) {
luaK_dischargevars(fs, e);
switch (e->k) {
case VNIL: {
luaK_nil(fs, reg, 1);
break;
}
case VFALSE: case VTRUE: {
luaK_codeABC(fs, OP_LOADBOOL, reg, e->k == VTRUE, 0);
break;
}
case VK: {
luaK_codeABx(fs, OP_LOADK, reg, e->info);
break;
}
case VRELOCABLE: {
Instruction *pc = &getcode(fs, e);
SETARG_A(*pc, reg);
break;
}
case VNONRELOC: {
if (reg != e->info)
luaK_codeABC(fs, OP_MOVE, reg, e->info, 0);
break;
}
default: {
lua_assert(e->k == VVOID || e->k == VJMP);
return; /* nothing to do... */
}
}
e->info = reg;
e->k = VNONRELOC;
}
static void discharge2anyreg (FuncState *fs, expdesc *e) {
if (e->k != VNONRELOC) {
luaK_reserveregs(fs, 1);
discharge2reg(fs, e, fs->freereg-1);
}
}
static void luaK_exp2reg (FuncState *fs, expdesc *e, int reg) {
discharge2reg(fs, e, reg);
if (e->k == VJMP)
luaK_concat(fs, &e->t, e->info); /* put this jump in `t' list */
if (hasjumps(e)) {
int final; /* position after whole expression */
int p_f = NO_JUMP; /* position of an eventual LOAD false */
int p_t = NO_JUMP; /* position of an eventual LOAD true */
if (need_value(fs, e->t, 1) || need_value(fs, e->f, 0)) {
int fj = NO_JUMP; /* first jump (over LOAD ops.) */
if (e->k != VJMP)
fj = luaK_jump(fs);
p_f = code_label(fs, reg, 0, 1);
p_t = code_label(fs, reg, 1, 0);
luaK_patchtohere(fs, fj);
}
final = luaK_getlabel(fs);
luaK_patchlistaux(fs, e->f, p_f, NO_REG, final, reg, p_f);
luaK_patchlistaux(fs, e->t, final, reg, p_t, NO_REG, p_t);
}
e->f = e->t = NO_JUMP;
e->info = reg;
e->k = VNONRELOC;
}
void luaK_exp2nextreg (FuncState *fs, expdesc *e) {
luaK_dischargevars(fs, e);
freeexp(fs, e);
luaK_reserveregs(fs, 1);
luaK_exp2reg(fs, e, fs->freereg - 1);
}
int luaK_exp2anyreg (FuncState *fs, expdesc *e) {
luaK_dischargevars(fs, e);
if (e->k == VNONRELOC) {
if (!hasjumps(e)) return e->info; /* exp is already in a register */
if (e->info >= fs->nactvar) { /* reg. is not a local? */
luaK_exp2reg(fs, e, e->info); /* put value on it */
return e->info;
}
}
luaK_exp2nextreg(fs, e); /* default */
return e->info;
}
void luaK_exp2val (FuncState *fs, expdesc *e) {
if (hasjumps(e))
luaK_exp2anyreg(fs, e);
else
luaK_dischargevars(fs, e);
}
int luaK_exp2RK (FuncState *fs, expdesc *e) {
luaK_exp2val(fs, e);
switch (e->k) {
case VNIL: {
if (fs->nk + MAXSTACK <= MAXARG_C) { /* constant fit in argC? */
e->info = nil_constant(fs);
e->k = VK;
return e->info + MAXSTACK;
}
else break;
}
case VK: {
if (e->info + MAXSTACK <= MAXARG_C) /* constant fit in argC? */
return e->info + MAXSTACK;
else break;
}
default: break;
}
/* not a constant in the right range: put in a register */
return luaK_exp2anyreg(fs, e);
}
void luaK_storevar (FuncState *fs, expdesc *var, expdesc *exp) {
switch (var->k) {
case VLOCAL: {
freeexp(fs, exp);
luaK_exp2reg(fs, exp, var->info);
return;
}
case VUPVAL: {
int e = luaK_exp2anyreg(fs, exp);
luaK_codeABC(fs, OP_SETUPVAL, e, var->info, 0);
break;
}
case VGLOBAL: {
int e = luaK_exp2anyreg(fs, exp);
luaK_codeABx(fs, OP_SETGLOBAL, e, var->info);
break;
}
case VINDEXED: {
int e = luaK_exp2anyreg(fs, exp);
luaK_codeABC(fs, OP_SETTABLE, e, var->info, var->aux);
break;
}
default: {
lua_assert(0); /* invalid var kind to store */
break;
}
}
freeexp(fs, exp);
}
void luaK_self (FuncState *fs, expdesc *e, expdesc *key) {
int func;
luaK_exp2anyreg(fs, e);
freeexp(fs, e);
func = fs->freereg;
luaK_reserveregs(fs, 2);
luaK_codeABC(fs, OP_SELF, func, e->info, luaK_exp2RK(fs, key));
freeexp(fs, key);
e->info = func;
e->k = VNONRELOC;
}
static void invertjump (FuncState *fs, expdesc *e) {
Instruction *pc = getjumpcontrol(fs, e->info);
lua_assert(testOpMode(GET_OPCODE(*pc), OpModeT));
SETARG_B(*pc, !(GETARG_B(*pc)));
}
static int jumponcond (FuncState *fs, expdesc *e, int cond) {
if (e->k == VRELOCABLE) {
Instruction ie = getcode(fs, e);
if (GET_OPCODE(ie) == OP_NOT) {
fs->pc--; /* remove previous OP_NOT */
return luaK_condjump(fs, OP_TEST, NO_REG, !cond ,GETARG_B(ie));
}
/* else go through */
}
discharge2anyreg(fs, e);
freeexp(fs, e);
return luaK_condjump(fs, OP_TEST, NO_REG, cond, e->info);
}
void luaK_goiftrue (FuncState *fs, expdesc *e) {
int pc; /* pc of last jump */
luaK_dischargevars(fs, e);
switch (e->k) {
case VK: case VTRUE: {
pc = NO_JUMP; /* always true; do nothing */
break;
}
case VFALSE: {
pc = luaK_jump(fs); /* always jump */
break;
}
case VJMP: {
invertjump(fs, e);
pc = e->info;
break;
}
default: {
pc = jumponcond(fs, e, 0);
break;
}
}
luaK_concat(fs, &e->f, pc); /* insert last jump in `f' list */
}
void luaK_goiffalse (FuncState *fs, expdesc *e) {
int pc; /* pc of last jump */
luaK_dischargevars(fs, e);
switch (e->k) {
case VNIL: case VFALSE: {
pc = NO_JUMP; /* always false; do nothing */
break;
}
case VTRUE: {
pc = luaK_jump(fs); /* always jump */
break;
}
case VJMP: {
pc = e->info;
break;
}
default: {
pc = jumponcond(fs, e, 1);
break;
}
}
luaK_concat(fs, &e->t, pc); /* insert last jump in `t' list */
}
static void codenot (FuncState *fs, expdesc *e) {
luaK_dischargevars(fs, e);
switch (e->k) {
case VNIL: case VFALSE: {
e->k = VTRUE;
break;
}
case VK: case VTRUE: {
e->k = VFALSE;
break;
}
case VJMP: {
invertjump(fs, e);
break;
}
case VRELOCABLE:
case VNONRELOC: {
discharge2anyreg(fs, e);
freeexp(fs, e);
e->info = luaK_codeABC(fs, OP_NOT, 0, e->info, 0);
e->k = VRELOCABLE;
break;
}
default: {
lua_assert(0); /* cannot happen */
break;
}
}
/* interchange true and false lists */
{ int temp = e->f; e->f = e->t; e->t = temp; }
}
void luaK_indexed (FuncState *fs, expdesc *t, expdesc *k) {
t->aux = luaK_exp2RK(fs, k);
t->k = VINDEXED;
}
void luaK_prefix (FuncState *fs, UnOpr op, expdesc *e) {
if (op == OPR_MINUS) {
luaK_exp2val(fs, e);
if (e->k == VK && ttisnumber(&fs->f->k[e->info]))
e->info = luaK_numberK(fs, -nvalue(&fs->f->k[e->info]));
else {
luaK_exp2anyreg(fs, e);
freeexp(fs, e);
e->info = luaK_codeABC(fs, OP_UNM, 0, e->info, 0);
e->k = VRELOCABLE;
}
}
else /* op == NOT */
codenot(fs, e);
}
void luaK_infix (FuncState *fs, BinOpr op, expdesc *v) {
switch (op) {
case OPR_AND: {
luaK_goiftrue(fs, v);
luaK_patchtohere(fs, v->t);
v->t = NO_JUMP;
break;
}
case OPR_OR: {
luaK_goiffalse(fs, v);
luaK_patchtohere(fs, v->f);
v->f = NO_JUMP;
break;
}
case OPR_CONCAT: {
luaK_exp2nextreg(fs, v); /* operand must be on the `stack' */
break;
}
case OPR_SUB: case OPR_DIV: case OPR_POW: {
/* non-comutative operators */
luaK_exp2anyreg(fs, v); /* first operand must be a register */
break;
}
default: {
luaK_exp2RK(fs, v);
break;
}
}
}
static void codebinop (FuncState *fs, expdesc *res, BinOpr op,
int o1, int o2, int ic) {
switch (op) {
case OPR_SUB:
case OPR_DIV:
case OPR_POW:
lua_assert(!ic);
/* go through */
case OPR_ADD:
case OPR_MULT: { /* ORDER OPR */
OpCode opc = cast(OpCode, (op - OPR_ADD) + OP_ADD);
res->info = luaK_codeABC(fs, opc, 0, o1, o2);
res->k = VRELOCABLE;
break;
}
case OPR_NE:
case OPR_EQ: {
res->info = luaK_condjump(fs, OP_EQ, o1, (op == OPR_EQ), o2);
res->k = VJMP;
break;
}
case OPR_LT:
case OPR_LE:
case OPR_GT:
case OPR_GE: { /* ORDER OPR */
OpCode opc;
int i = op - OPR_LT;
if (ic) /* operands were interchanged? */
i = (i+2)&3; /* correct operator */
opc = cast(OpCode, i + OP_LT);
res->info = luaK_condjump(fs, opc, o1, 1, o2);
res->k = VJMP;
break;
}
default: lua_assert(0);
}
}
void luaK_posfix (FuncState *fs, BinOpr op, expdesc *e1, expdesc *e2) {
switch (op) {
case OPR_AND: {
lua_assert(e1->t == NO_JUMP); /* list must be closed */
luaK_dischargevars(fs, e2);
luaK_concat(fs, &e1->f, e2->f);
e1->k = e2->k; e1->info = e2->info; e1->aux = e2->aux; e1->t = e2->t;
break;
}
case OPR_OR: {
lua_assert(e1->f == NO_JUMP); /* list must be closed */
luaK_dischargevars(fs, e2);
luaK_concat(fs, &e1->t, e2->t);
e1->k = e2->k; e1->info = e2->info; e1->aux = e2->aux; e1->f = e2->f;
break;
}
case OPR_CONCAT: {
luaK_exp2val(fs, e2);
if (e2->k == VRELOCABLE && GET_OPCODE(getcode(fs, e2)) == OP_CONCAT) {
lua_assert(e1->info == GETARG_B(getcode(fs, e2))-1);
freeexp(fs, e1);
SETARG_B(getcode(fs, e2), e1->info);
e1->k = e2->k; e1->info = e2->info;
}
else {
luaK_exp2nextreg(fs, e2);
freeexp(fs, e2);
freeexp(fs, e1);
e1->info = luaK_codeABC(fs, OP_CONCAT, 0, e1->info, e2->info);
e1->k = VRELOCABLE;
}
break;
}
default: {
int o1, o2;
int ic; /* interchange flag */
if (e1->k != VK) { /* not a constant operator? */
o1 = e1->info;
o2 = luaK_exp2RK(fs, e2); /* maybe other operator is constant... */
ic = 0;
}
else { /* interchange operands */
o2 = luaK_exp2RK(fs, e1); /* constant must be 2nd operand */
o1 = luaK_exp2anyreg(fs, e2); /* other operator must be in register */
ic = 1;
}
freeexp(fs, e2);
freeexp(fs, e1);
codebinop(fs, e1, op, o1, o2, ic);
}
}
}
void luaK_fixline (FuncState *fs, int line) {
fs->f->lineinfo[fs->pc - 1] = line;
}
int luaK_code (FuncState *fs, Instruction i, int line) {
Proto *f = fs->f;
int oldsize = f->sizecode;
luaK_dischargejpc(fs); /* `pc' will change */
/* put new instruction in code array */
luaM_growvector(fs->L, f->code, fs->pc, f->sizecode, Instruction,
MAX_INT, "code size overflow");
f->code[fs->pc] = i;
if (f->sizecode != oldsize)
luaM_reallocvector(fs->L, f->lineinfo, oldsize, f->sizecode, int);
f->lineinfo[fs->pc] = line;
return fs->pc++;
}
int luaK_codeABC (FuncState *fs, OpCode o, int a, int b, int c) {
lua_assert(getOpMode(o) == iABC);
return luaK_code(fs, CREATE_ABC(o, a, b, c), fs->ls->lastline);
}
int luaK_codeABx (FuncState *fs, OpCode o, int a, unsigned int bc) {
lua_assert(getOpMode(o) == iABx || getOpMode(o) == iAsBx);
return luaK_code(fs, CREATE_ABx(o, a, bc), fs->ls->lastline);
}

73
lcode.h
View File

@@ -1,73 +0,0 @@
/*
** $Id: lcode.h,v 1.36 2002/05/13 13:07:48 roberto Exp roberto $
** Code generator for Lua
** See Copyright Notice in lua.h
*/
#ifndef lcode_h
#define lcode_h
#include "llex.h"
#include "lobject.h"
#include "lopcodes.h"
#include "lparser.h"
/*
** Marks the end of a patch list. It is an invalid value both as an absolute
** address, and as a list link (would link an element to itself).
*/
#define NO_JUMP (-1)
/*
** grep "ORDER OPR" if you change these enums
*/
typedef enum BinOpr {
OPR_ADD, OPR_SUB, OPR_MULT, OPR_DIV, OPR_POW,
OPR_CONCAT,
OPR_NE, OPR_EQ,
OPR_LT, OPR_LE, OPR_GT, OPR_GE,
OPR_AND, OPR_OR,
OPR_NOBINOPR
} BinOpr;
#define binopistest(op) ((op) >= OPR_NE)
typedef enum UnOpr { OPR_MINUS, OPR_NOT, OPR_NOUNOPR } UnOpr;
#define getcode(fs,e) ((fs)->f->code[(e)->info])
#define luaK_codeAsBx(fs,o,A,sBx) luaK_codeABx(fs,o,A,(sBx)+MAXARG_sBx)
int luaK_code (FuncState *fs, Instruction i, int line);
int luaK_codeABx (FuncState *fs, OpCode o, int A, unsigned int Bx);
int luaK_codeABC (FuncState *fs, OpCode o, int A, int B, int C);
void luaK_fixline (FuncState *fs, int line);
void luaK_nil (FuncState *fs, int from, int n);
void luaK_reserveregs (FuncState *fs, int n);
int luaK_stringK (FuncState *fs, TString *s);
int luaK_numberK (FuncState *fs, lua_Number r);
void luaK_dischargevars (FuncState *fs, expdesc *e);
int luaK_exp2anyreg (FuncState *fs, expdesc *e);
void luaK_exp2nextreg (FuncState *fs, expdesc *e);
void luaK_exp2val (FuncState *fs, expdesc *e);
int luaK_exp2RK (FuncState *fs, expdesc *e);
void luaK_self (FuncState *fs, expdesc *e, expdesc *key);
void luaK_indexed (FuncState *fs, expdesc *t, expdesc *k);
void luaK_goiftrue (FuncState *fs, expdesc *e);
void luaK_goiffalse (FuncState *fs, expdesc *e);
void luaK_storevar (FuncState *fs, expdesc *var, expdesc *e);
void luaK_setcallreturns (FuncState *fs, expdesc *var, int nresults);
int luaK_jump (FuncState *fs);
void luaK_patchlist (FuncState *fs, int list, int target);
void luaK_patchtohere (FuncState *fs, int list);
void luaK_concat (FuncState *fs, int *l1, int l2);
int luaK_getlabel (FuncState *fs);
void luaK_prefix (FuncState *fs, UnOpr op, expdesc *v);
void luaK_infix (FuncState *fs, BinOpr op, expdesc *v);
void luaK_posfix (FuncState *fs, BinOpr op, expdesc *v1, expdesc *v2);
#endif

264
ldblib.c
View File

@@ -1,264 +0,0 @@
/*
** $Id: ldblib.c,v 1.66 2002/08/06 18:01:50 roberto Exp roberto $
** Interface from Lua to its debug API
** See Copyright Notice in lua.h
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "lua.h"
#include "lauxlib.h"
#include "lualib.h"
static void settabss (lua_State *L, const char *i, const char *v) {
lua_pushstring(L, i);
lua_pushstring(L, v);
lua_rawset(L, -3);
}
static void settabsi (lua_State *L, const char *i, int v) {
lua_pushstring(L, i);
lua_pushnumber(L, v);
lua_rawset(L, -3);
}
static int getinfo (lua_State *L) {
lua_Debug ar;
const char *options = luaL_opt_string(L, 2, "flnSu");
if (lua_isnumber(L, 1)) {
if (!lua_getstack(L, (int)(lua_tonumber(L, 1)), &ar)) {
lua_pushnil(L); /* level out of range */
return 1;
}
}
else if (lua_isfunction(L, 1)) {
lua_pushfstring(L, ">%s", options);
options = lua_tostring(L, -1);
lua_pushvalue(L, 1);
}
else
return luaL_argerror(L, 1, "function or level expected");
if (!lua_getinfo(L, options, &ar))
return luaL_argerror(L, 2, "invalid option");
lua_newtable(L);
for (; *options; options++) {
switch (*options) {
case 'S':
settabss(L, "source", ar.source);
settabss(L, "short_src", ar.short_src);
settabsi(L, "linedefined", ar.linedefined);
settabss(L, "what", ar.what);
break;
case 'l':
settabsi(L, "currentline", ar.currentline);
break;
case 'u':
settabsi(L, "nups", ar.nups);
break;
case 'n':
settabss(L, "name", ar.name);
settabss(L, "namewhat", ar.namewhat);
break;
case 'f':
lua_pushliteral(L, "func");
lua_pushvalue(L, -3);
lua_rawset(L, -3);
break;
}
}
return 1; /* return table */
}
static int getlocal (lua_State *L) {
lua_Debug ar;
const char *name;
if (!lua_getstack(L, luaL_check_int(L, 1), &ar)) /* level out of range? */
return luaL_argerror(L, 1, "level out of range");
name = lua_getlocal(L, &ar, luaL_check_int(L, 2));
if (name) {
lua_pushstring(L, name);
lua_pushvalue(L, -2);
return 2;
}
else {
lua_pushnil(L);
return 1;
}
}
static int setlocal (lua_State *L) {
lua_Debug ar;
if (!lua_getstack(L, luaL_check_int(L, 1), &ar)) /* level out of range? */
return luaL_argerror(L, 1, "level out of range");
luaL_check_any(L, 3);
lua_pushstring(L, lua_setlocal(L, &ar, luaL_check_int(L, 2)));
return 1;
}
static const char KEY_HOOK = 'h';
static void hookf (lua_State *L, lua_Debug *ar) {
static const char *const hooknames[] = {"call", "return", "line", "count"};
lua_pushlightuserdata(L, (void *)&KEY_HOOK);
lua_rawget(L, LUA_REGISTRYINDEX);
if (lua_isfunction(L, -1)) {
lua_pushstring(L, hooknames[(int)ar->event]);
if (ar->currentline >= 0) lua_pushnumber(L, ar->currentline);
else lua_pushnil(L);
lua_assert(lua_getinfo(L, "lS", ar));
lua_call(L, 2, 0);
}
else
lua_pop(L, 1); /* pop result from gettable */
}
static unsigned long makemask (const char *smask, int count) {
unsigned long mask = 0;
if (strchr(smask, 'c')) mask |= LUA_MASKCALL;
if (strchr(smask, 'r')) mask |= LUA_MASKRET;
if (strchr(smask, 'l')) mask |= LUA_MASKLINE;
return mask | LUA_MASKCOUNT(count);
}
static char *unmakemask (unsigned long mask, char *smask) {
int i = 0;
if (mask & LUA_MASKCALL) smask[i++] = 'c';
if (mask & LUA_MASKRET) smask[i++] = 'r';
if (mask & LUA_MASKLINE) smask[i++] = 'l';
smask[i] = '\0';
return smask;
}
static int sethook (lua_State *L) {
if (lua_isnoneornil(L, 1)) {
lua_settop(L, 1);
lua_sethook(L, NULL, 0); /* turn off hooks */
}
else {
const char *smask = luaL_check_string(L, 2);
lua_Number count = luaL_opt_number(L, 3, 0);
luaL_check_type(L, 1, LUA_TFUNCTION);
luaL_arg_check(L, count <= LUA_MAXCOUNT, 2, "count too large (>= 2^24)");
lua_sethook(L, hookf, makemask(smask, count));
}
lua_pushlightuserdata(L, (void *)&KEY_HOOK);
lua_pushvalue(L, 1);
lua_rawset(L, LUA_REGISTRYINDEX); /* set new hook */
return 0;
}
static int gethook (lua_State *L) {
char buff[5];
unsigned long mask = lua_gethookmask(L);
lua_pushlightuserdata(L, (void *)&KEY_HOOK);
lua_rawget(L, LUA_REGISTRYINDEX); /* get hook */
lua_pushstring(L, unmakemask(mask, buff));
lua_pushnumber(L, lua_getmaskcount(mask));
return 3;
}
static int debug (lua_State *L) {
for (;;) {
char buffer[250];
fputs("lua_debug> ", stderr);
if (fgets(buffer, sizeof(buffer), stdin) == 0 ||
strcmp(buffer, "cont\n") == 0)
return 0;
lua_dostring(L, buffer);
lua_settop(L, 0); /* remove eventual returns */
}
}
#define LEVELS1 12 /* size of the first part of the stack */
#define LEVELS2 10 /* size of the second part of the stack */
static int errorfb (lua_State *L) {
int level = 1; /* skip level 0 (it's this function) */
int firstpart = 1; /* still before eventual `...' */
lua_Debug ar;
if (lua_gettop(L) == 0)
lua_pushliteral(L, "");
else if (!lua_isstring(L, 1)) return 1; /* no string message */
lua_pushliteral(L, "stack traceback:\n");
while (lua_getstack(L, level++, &ar)) {
if (level > LEVELS1 && firstpart) {
/* no more than `LEVELS2' more levels? */
if (!lua_getstack(L, level+LEVELS2, &ar))
level--; /* keep going */
else {
lua_pushliteral(L, "\t...\n"); /* too many levels */
while (lua_getstack(L, level+LEVELS2, &ar)) /* find last levels */
level++;
}
firstpart = 0;
continue;
}
lua_pushliteral(L, "\t");
lua_getinfo(L, "Snl", &ar);
lua_pushfstring(L, "%s:", ar.short_src);
if (ar.currentline > 0)
lua_pushfstring(L, "%d:", ar.currentline);
switch (*ar.namewhat) {
case 'g': /* global */
case 'l': /* local */
case 'f': /* field */
case 'm': /* method */
lua_pushfstring(L, " in function `%s'", ar.name);
break;
default: {
if (*ar.what == 'm') /* main? */
lua_pushfstring(L, " in main chunk");
else if (*ar.what == 'C') /* C function? */
lua_pushfstring(L, "%s", ar.short_src);
else
lua_pushfstring(L, " in function <%s:%d>",
ar.short_src, ar.linedefined);
}
}
lua_pushliteral(L, "\n");
lua_concat(L, lua_gettop(L));
}
lua_concat(L, lua_gettop(L));
return 1;
}
static const luaL_reg dblib[] = {
{"getlocal", getlocal},
{"getinfo", getinfo},
{"gethook", gethook},
{"sethook", sethook},
{"setlocal", setlocal},
{"debug", debug},
{"traceback", errorfb},
{NULL, NULL}
};
LUALIB_API int lua_dblibopen (lua_State *L) {
luaL_opennamedlib(L, LUA_DBLIBNAME, dblib, 0);
lua_pushliteral(L, "_TRACEBACK");
lua_pushcfunction(L, errorfb);
lua_settable(L, LUA_GLOBALSINDEX);
return 0;
}

552
ldebug.c
View File

@@ -1,552 +0,0 @@
/*
** $Id: ldebug.c,v 1.131 2002/08/08 20:08:41 roberto Exp roberto $
** Debug Interface
** See Copyright Notice in lua.h
*/
#include <stdlib.h>
#include <string.h>
#include "lua.h"
#include "lapi.h"
#include "lcode.h"
#include "ldebug.h"
#include "ldo.h"
#include "lfunc.h"
#include "lobject.h"
#include "lopcodes.h"
#include "lstate.h"
#include "lstring.h"
#include "ltable.h"
#include "ltm.h"
#include "lvm.h"
static const char *getfuncname (CallInfo *ci, const char **name);
#define isLua(ci) (!((ci)->state & CI_C))
static int currentpc (CallInfo *ci) {
if (!isLua(ci)) return -1; /* function is not a Lua function? */
if (ci->state & CI_HASFRAME) /* function has a frame? */
ci->u.l.savedpc = *ci->u.l.pc; /* use `pc' from there */
/* function's pc is saved */
return pcRel(ci->u.l.savedpc, ci_func(ci)->l.p);
}
static int currentline (CallInfo *ci) {
int pc = currentpc(ci);
if (pc < 0)
return -1; /* only active lua functions have current-line information */
else
return getline(ci_func(ci)->l.p, pc);
}
LUA_API int lua_sethook (lua_State *L, lua_Hook func, unsigned long mask) {
int allow;
CallInfo *ci;
lua_lock(L);
allow = allowhook(L);
if (func == NULL) mask = 0;
else if (mask == 0) func = NULL;
L->hook = func;
L->hookmask = mask;
setallowhook(L, allow);
resethookcount(L);
for (ci = L->ci; ci != L->base_ci; ci--) /* update all `savedpc's */
currentpc(ci);
lua_unlock(L);
return 1;
}
LUA_API lua_Hook lua_gethook (lua_State *L) {
return L->hook;
}
LUA_API unsigned long lua_gethookmask (lua_State *L) {
return L->hookmask;
}
LUA_API int lua_getstack (lua_State *L, int level, lua_Debug *ar) {
int status;
lua_lock(L);
if (L->ci - L->base_ci <= level) status = 0; /* there is no such level */
else {
ar->i_ci = (L->ci - L->base_ci) - level;
status = 1;
}
lua_unlock(L);
return status;
}
static Proto *getluaproto (CallInfo *ci) {
return (isLua(ci) ? ci_func(ci)->l.p : NULL);
}
LUA_API const char *lua_getlocal (lua_State *L, const lua_Debug *ar, int n) {
const char *name;
CallInfo *ci;
Proto *fp;
lua_lock(L);
name = NULL;
ci = L->base_ci + ar->i_ci;
fp = getluaproto(ci);
if (fp) { /* is a Lua function? */
name = luaF_getlocalname(fp, n, currentpc(ci));
if (name)
luaA_pushobject(L, ci->base+(n-1)); /* push value */
}
lua_unlock(L);
return name;
}
LUA_API const char *lua_setlocal (lua_State *L, const lua_Debug *ar, int n) {
const char *name;
CallInfo *ci;
Proto *fp;
lua_lock(L);
name = NULL;
ci = L->base_ci + ar->i_ci;
fp = getluaproto(ci);
L->top--; /* pop new value */
if (fp) { /* is a Lua function? */
name = luaF_getlocalname(fp, n, currentpc(ci));
if (!name || name[0] == '(') /* `(' starts private locals */
name = NULL;
else
setobj(ci->base+(n-1), L->top);
}
lua_unlock(L);
return name;
}
static void infoLproto (lua_Debug *ar, Proto *f) {
ar->source = getstr(f->source);
ar->linedefined = f->lineDefined;
ar->what = "Lua";
}
static void funcinfo (lua_State *L, lua_Debug *ar, StkId func) {
Closure *cl;
if (ttisfunction(func))
cl = clvalue(func);
else {
luaG_runerror(L, "value for `lua_getinfo' is not a function");
cl = NULL; /* to avoid warnings */
}
if (cl->c.isC) {
ar->source = "=[C]";
ar->linedefined = -1;
ar->what = "C";
}
else
infoLproto(ar, cl->l.p);
luaO_chunkid(ar->short_src, ar->source, LUA_IDSIZE);
if (ar->linedefined == 0)
ar->what = "main";
}
static const char *travglobals (lua_State *L, const TObject *o) {
Table *g = hvalue(gt(L));
int i = sizenode(g);
while (i--) {
Node *n = node(g, i);
if (luaO_rawequalObj(o, val(n)) && ttisstring(key(n)))
return getstr(tsvalue(key(n)));
}
return NULL;
}
static void getname (lua_State *L, const TObject *f, lua_Debug *ar) {
/* try to find a name for given function */
if ((ar->name = travglobals(L, f)) != NULL)
ar->namewhat = "global";
else ar->namewhat = ""; /* not found */
}
LUA_API int lua_getinfo (lua_State *L, const char *what, lua_Debug *ar) {
StkId f;
CallInfo *ci;
int status = 1;
lua_lock(L);
if (*what != '>') { /* function is active? */
ci = L->base_ci + ar->i_ci;
f = ci->base - 1;
}
else {
what++; /* skip the `>' */
ci = NULL;
f = L->top - 1;
}
for (; *what; what++) {
switch (*what) {
case 'S': {
funcinfo(L, ar, f);
break;
}
case 'l': {
ar->currentline = (ci) ? currentline(ci) : -1;
break;
}
case 'u': {
ar->nups = (ttisfunction(f)) ? clvalue(f)->c.nupvalues : 0;
break;
}
case 'n': {
ar->namewhat = (ci) ? getfuncname(ci, &ar->name) : NULL;
if (ar->namewhat == NULL)
getname(L, f, ar);
break;
}
case 'f': {
setobj(L->top, f);
status = 2;
break;
}
default: status = 0; /* invalid option */
}
}
if (!ci) L->top--; /* pop function */
if (status == 2) incr_top(L);
lua_unlock(L);
return status;
}
/*
** {======================================================
** Symbolic Execution and code checker
** =======================================================
*/
#define check(x) if (!(x)) return 0;
#define checkjump(pt,pc) check(0 <= pc && pc < pt->sizecode)
#define checkreg(pt,reg) check((reg) < (pt)->maxstacksize)
static int precheck (const Proto *pt) {
check(pt->maxstacksize <= MAXSTACK);
lua_assert(pt->numparams+pt->is_vararg <= pt->maxstacksize);
check(GET_OPCODE(pt->code[pt->sizecode-1]) == OP_RETURN);
return 1;
}
static int checkopenop (const Proto *pt, int pc) {
Instruction i = pt->code[pc+1];
switch (GET_OPCODE(i)) {
case OP_CALL:
case OP_TAILCALL:
case OP_RETURN: {
check(GETARG_B(i) == 0);
return 1;
}
case OP_SETLISTO: return 1;
default: return 0; /* invalid instruction after an open call */
}
}
static Instruction luaG_symbexec (const Proto *pt, int lastpc, int reg) {
int pc;
int last; /* stores position of last instruction that changed `reg' */
last = pt->sizecode-1; /* points to final return (a `neutral' instruction) */
check(precheck(pt));
for (pc = 0; pc < lastpc; pc++) {
const Instruction i = pt->code[pc];
OpCode op = GET_OPCODE(i);
int a = GETARG_A(i);
int b = 0;
int c = 0;
checkreg(pt, a);
switch (getOpMode(op)) {
case iABC: {
b = GETARG_B(i);
c = GETARG_C(i);
if (testOpMode(op, OpModeBreg))
checkreg(pt, b);
if (testOpMode(op, OpModeCreg))
check(c < pt->maxstacksize ||
(c >= MAXSTACK && c-MAXSTACK < pt->sizek));
break;
}
case iABx: {
b = GETARG_Bx(i);
if (testOpMode(op, OpModeK)) check(b < pt->sizek);
break;
}
case iAsBx: {
b = GETARG_sBx(i);
break;
}
}
if (testOpMode(op, OpModesetA)) {
if (a == reg) last = pc; /* change register `a' */
}
if (testOpMode(op, OpModeT)) {
check(pc+2 < pt->sizecode); /* check skip */
check(GET_OPCODE(pt->code[pc+1]) == OP_JMP);
}
switch (op) {
case OP_LOADBOOL: {
check(c == 0 || pc+2 < pt->sizecode); /* check its jump */
break;
}
case OP_LOADNIL: {
if (a <= reg && reg <= b)
last = pc; /* set registers from `a' to `b' */
break;
}
case OP_GETUPVAL:
case OP_SETUPVAL: {
check(b < pt->nupvalues);
break;
}
case OP_GETGLOBAL:
case OP_SETGLOBAL: {
check(ttisstring(&pt->k[b]));
break;
}
case OP_SELF: {
checkreg(pt, a+1);
if (reg == a+1) last = pc;
break;
}
case OP_CONCAT: {
/* `c' is a register, and at least two operands */
check(c < MAXSTACK && b < c);
break;
}
case OP_TFORLOOP:
checkreg(pt, a+2+c);
/* go through */
case OP_FORLOOP:
checkreg(pt, a+2);
/* go through */
case OP_JMP: {
int dest = pc+1+b;
check(0 <= dest && dest < pt->sizecode);
/* not full check and jump is forward and do not skip `lastpc'? */
if (reg != NO_REG && pc < dest && dest <= lastpc)
pc += b; /* do the jump */
break;
}
case OP_CALL:
case OP_TAILCALL: {
if (b != 0) {
checkreg(pt, a+b-1);
}
c--; /* c = num. returns */
if (c == LUA_MULTRET) {
check(checkopenop(pt, pc));
}
else if (c != 0)
checkreg(pt, a+c-1);
if (reg >= a) last = pc; /* affect all registers above base */
break;
}
case OP_RETURN: {
b--; /* b = num. returns */
if (b > 0) checkreg(pt, a+b-1);
break;
}
case OP_SETLIST: {
checkreg(pt, a + (b&(LFIELDS_PER_FLUSH-1)) + 1);
break;
}
case OP_CLOSURE: {
int nup;
check(b < pt->sizep);
nup = pt->p[b]->nupvalues;
check(pc + nup < pt->sizecode);
for (; nup>0; nup--) {
OpCode op1 = GET_OPCODE(pt->code[pc+nup]);
check(op1 == OP_GETUPVAL || op1 == OP_MOVE);
}
break;
}
default: break;
}
}
return pt->code[last];
}
#undef check
#undef checkjump
#undef checkreg
/* }====================================================== */
int luaG_checkcode (const Proto *pt) {
return luaG_symbexec(pt, pt->sizecode, NO_REG);
}
static const char *kname (Proto *p, int c) {
c = c - MAXSTACK;
if (c >= 0 && ttisstring(&p->k[c]))
return svalue(&p->k[c]);
else
return "?";
}
static const char *getobjname (CallInfo *ci, int stackpos, const char **name) {
if (isLua(ci)) { /* a Lua function? */
Proto *p = ci_func(ci)->l.p;
int pc = currentpc(ci);
Instruction i;
*name = luaF_getlocalname(p, stackpos+1, pc);
if (*name) /* is a local? */
return "local";
i = luaG_symbexec(p, pc, stackpos); /* try symbolic execution */
lua_assert(pc != -1);
switch (GET_OPCODE(i)) {
case OP_GETGLOBAL: {
lua_assert(ttisstring(&p->k[GETARG_Bx(i)]));
*name = svalue(&p->k[GETARG_Bx(i)]);
return "global";
}
case OP_MOVE: {
int a = GETARG_A(i);
int b = GETARG_B(i); /* move from `b' to `a' */
if (b < a)
return getobjname(ci, b, name); /* get name for `b' */
break;
}
case OP_GETTABLE: {
*name = kname(p, GETARG_C(i));
return "field";
}
case OP_SELF: {
*name = kname(p, GETARG_C(i));
return "method";
}
default: break;
}
}
return NULL; /* no useful name found */
}
static Instruction getcurrentinstr (CallInfo *ci) {
return (!isLua(ci)) ? (Instruction)(-1) :
ci_func(ci)->l.p->code[currentpc(ci)];
}
static const char *getfuncname (CallInfo *ci, const char **name) {
Instruction i;
ci--; /* calling function */
i = getcurrentinstr(ci);
return (GET_OPCODE(i) == OP_CALL ? getobjname(ci, GETARG_A(i), name)
: NULL); /* no useful name found */
}
/* only ANSI way to check whether a pointer points to an array */
static int isinstack (CallInfo *ci, const TObject *o) {
StkId p;
for (p = ci->base; p < ci->top; p++)
if (o == p) return 1;
return 0;
}
void luaG_typeerror (lua_State *L, const TObject *o, const char *op) {
const char *name = NULL;
const char *t = luaT_typenames[ttype(o)];
const char *kind = (isinstack(L->ci, o)) ?
getobjname(L->ci, o - L->ci->base, &name) : NULL;
if (kind)
luaG_runerror(L, "attempt to %s %s `%s' (a %s value)",
op, kind, name, t);
else
luaG_runerror(L, "attempt to %s a %s value", op, t);
}
void luaG_concaterror (lua_State *L, StkId p1, StkId p2) {
if (ttisstring(p1)) p1 = p2;
lua_assert(!ttisstring(p1));
luaG_typeerror(L, p1, "concat");
}
void luaG_aritherror (lua_State *L, StkId p1, const TObject *p2) {
TObject temp;
if (luaV_tonumber(p1, &temp) == NULL)
p2 = p1; /* first operand is wrong */
luaG_typeerror(L, p2, "perform arithmetic on");
}
int luaG_ordererror (lua_State *L, const TObject *p1, const TObject *p2) {
const char *t1 = luaT_typenames[ttype(p1)];
const char *t2 = luaT_typenames[ttype(p2)];
if (t1[2] == t2[2])
luaG_runerror(L, "attempt to compare two %s values", t1);
else
luaG_runerror(L, "attempt to compare %s with %s", t1, t2);
return 0;
}
static void addinfo (lua_State *L, const char *msg) {
CallInfo *ci = L->ci;
if (!isLua(ci)) { /* no Lua code? */
luaO_pushfstring(L, "%s\n", msg); /* no extra info; just add '\n' */
}
else { /* add file:line information */
char buff[LUA_IDSIZE];
int line = currentline(ci);
luaO_chunkid(buff, getstr(getluaproto(ci)->source), LUA_IDSIZE);
luaO_pushfstring(L, "%s:%d: %s\n", buff, line, msg);
}
}
void luaG_errormsg (lua_State *L) {
if (L->errfunc != 0) { /* is there an error handling function? */
StkId errfunc = restorestack(L, L->errfunc);
if (!ttisfunction(errfunc)) luaD_throw(L, LUA_ERRERR);
setobj(L->top, L->top - 1); /* move argument */
setobj(L->top - 1, errfunc); /* push function */
incr_top(L);
luaD_call(L, L->top - 2, 1); /* call it */
}
luaD_throw(L, LUA_ERRRUN);
}
void luaG_runerror (lua_State *L, const char *fmt, ...) {
va_list argp;
va_start(argp, fmt);
addinfo(L, luaO_pushvfstring(L, fmt, argp));
va_end(argp);
luaG_errormsg(L);
}

View File

@@ -1,33 +0,0 @@
/*
** $Id: ldebug.h,v 1.29 2002/08/08 20:08:41 roberto Exp roberto $
** Auxiliary functions from Debug Interface module
** See Copyright Notice in lua.h
*/
#ifndef ldebug_h
#define ldebug_h
#include "lstate.h"
#define pcRel(pc, p) (cast(int, (pc) - (p)->code) - 1)
#define getline(f,pc) (((f)->lineinfo) ? (f)->lineinfo[pc] : 0)
#define resethookcount(L) (L->hookcount = lua_getmaskcount(L->hookmask))
#define setallowhook(L,cond) ((L->hookmask) = ((L->hookmask) & ~1) | (cond))
#define allowhook(L) ((L->hookmask) & 1)
void luaG_typeerror (lua_State *L, const TObject *o, const char *opname);
void luaG_concaterror (lua_State *L, StkId p1, StkId p2);
void luaG_aritherror (lua_State *L, StkId p1, const TObject *p2);
int luaG_ordererror (lua_State *L, const TObject *p1, const TObject *p2);
void luaG_runerror (lua_State *L, const char *fmt, ...);
void luaG_errormsg (lua_State *L);
int luaG_checkcode (const Proto *pt);
#endif

461
ldo.c
View File

@@ -1,461 +0,0 @@
/*
** $Id: ldo.c,v 1.191 2002/08/07 19:22:39 roberto Exp roberto $
** Stack and Call structure of Lua
** See Copyright Notice in lua.h
*/
#include <setjmp.h>
#include <stdlib.h>
#include <string.h>
#include "lua.h"
#include "ldebug.h"
#include "ldo.h"
#include "lfunc.h"
#include "lgc.h"
#include "lmem.h"
#include "lobject.h"
#include "lopcodes.h"
#include "lparser.h"
#include "lstate.h"
#include "lstring.h"
#include "ltable.h"
#include "ltm.h"
#include "lundump.h"
#include "lvm.h"
#include "lzio.h"
/*
** {======================================================
** Error-recovery functions (based on long jumps)
** =======================================================
*/
/* chain list of long jump buffers */
struct lua_longjmp {
struct lua_longjmp *previous;
jmp_buf b;
volatile int status; /* error code */
};
static void seterrorobj (lua_State *L, int errcode) {
switch (errcode) {
case LUA_ERRMEM: {
setsvalue(L->top, luaS_new(L, MEMERRMSG));
break;
}
case LUA_ERRERR: {
setsvalue(L->top, luaS_new(L, "error in error handling"));
break;
}
case LUA_ERRSYNTAX:
case LUA_ERRRUN: {
return; /* error message already on top */
}
}
L->top++;
}
void luaD_throw (lua_State *L, int errcode) {
if (L->errorJmp) {
L->errorJmp->status = errcode;
longjmp(L->errorJmp->b, 1);
}
else {
G(L)->panic(L);
exit(EXIT_FAILURE);
}
}
int luaD_rawrunprotected (lua_State *L, Pfunc f, void *ud) {
struct lua_longjmp lj;
lj.status = 0;
lj.previous = L->errorJmp; /* chain new error handler */
L->errorJmp = &lj;
if (setjmp(lj.b) == 0)
(*f)(L, ud);
L->errorJmp = lj.previous; /* restore old error handler */
return lj.status;
}
static void restore_stack_limit (lua_State *L) {
L->stack_last = L->stack+L->stacksize-1;
if (L->size_ci > LUA_MAXCALLS) { /* there was an overflow? */
int inuse = (L->ci - L->base_ci);
if (inuse + 1 < LUA_MAXCALLS) /* can `undo' overflow? */
luaD_reallocCI(L, LUA_MAXCALLS);
}
}
/* }====================================================== */
static void correctstack (lua_State *L, TObject *oldstack) {
CallInfo *ci;
UpVal *up;
L->top = (L->top - oldstack) + L->stack;
for (up = L->openupval; up != NULL; up = up->next)
up->v = (up->v - oldstack) + L->stack;
for (ci = L->base_ci; ci <= L->ci; ci++) {
ci->base = (ci->base - oldstack) + L->stack;
ci->top = (ci->top - oldstack) + L->stack;
if (ci->state & CI_HASFRAME) /* Lua function with active frame? */
*ci->u.l.pb = (*ci->u.l.pb - oldstack) + L->stack; /* correct frame */
}
}
void luaD_reallocstack (lua_State *L, int newsize) {
TObject *oldstack = L->stack;
luaM_reallocvector(L, L->stack, L->stacksize, newsize, TObject);
L->stacksize = newsize;
L->stack_last = L->stack+newsize-1-EXTRA_STACK;
correctstack(L, oldstack);
}
void luaD_reallocCI (lua_State *L, int newsize) {
CallInfo *oldci = L->base_ci;
luaM_reallocvector(L, L->base_ci, L->size_ci, newsize, CallInfo);
L->size_ci = newsize;
L->ci = (L->ci - oldci) + L->base_ci;
L->end_ci = L->base_ci + L->size_ci;
}
void luaD_growstack (lua_State *L, int n) {
if (n <= L->stacksize) /* double size is enough? */
luaD_reallocstack(L, 2*L->stacksize);
else
luaD_reallocstack(L, L->stacksize + n + EXTRA_STACK);
}
static void luaD_growCI (lua_State *L) {
if (L->size_ci > LUA_MAXCALLS) /* overflow while handling overflow? */
luaD_throw(L, LUA_ERRERR);
else {
luaD_reallocCI(L, 2*L->size_ci);
if (L->size_ci > LUA_MAXCALLS)
luaG_runerror(L, "stack overflow");
}
}
void luaD_callhook (lua_State *L, lua_Hookevent event, int line) {
lua_Hook hook = L->hook;
if (hook && allowhook(L)) {
ptrdiff_t top = savestack(L, L->top);
ptrdiff_t ci_top = savestack(L, L->ci->top);
lua_Debug ar;
ar.event = event;
ar.currentline = line;
ar.i_ci = L->ci - L->base_ci;
luaD_checkstack(L, LUA_MINSTACK); /* ensure minimum stack size */
L->ci->top = L->top + LUA_MINSTACK;
setallowhook(L, 0); /* cannot call hooks inside a hook */
lua_unlock(L);
(*hook)(L, &ar);
lua_lock(L);
lua_assert(!allowhook(L));
setallowhook(L, 1);
L->ci->top = restorestack(L, ci_top);
L->top = restorestack(L, top);
}
}
static void adjust_varargs (lua_State *L, int nfixargs, StkId base) {
int i;
Table *htab;
TObject nname;
int actual = L->top - base; /* actual number of arguments */
if (actual < nfixargs) {
luaD_checkstack(L, nfixargs - actual);
for (; actual < nfixargs; ++actual)
setnilvalue(L->top++);
}
actual -= nfixargs; /* number of extra arguments */
htab = luaH_new(L, 0, 0); /* create `arg' table */
for (i=0; i<actual; i++) /* put extra arguments into `arg' table */
setobj(luaH_setnum(L, htab, i+1), L->top - actual + i);
/* store counter in field `n' */
setsvalue(&nname, luaS_newliteral(L, "n"));
setnvalue(luaH_set(L, htab, &nname), actual);
L->top -= actual; /* remove extra elements from the stack */
sethvalue(L->top, htab);
incr_top(L);
}
static StkId tryfuncTM (lua_State *L, StkId func) {
const TObject *tm = luaT_gettmbyobj(L, func, TM_CALL);
StkId p;
ptrdiff_t funcr = savestack(L, func);
if (!ttisfunction(tm))
luaG_typeerror(L, func, "call");
/* Open a hole inside the stack at `func' */
for (p = L->top; p > func; p--) setobj(p, p-1);
incr_top(L);
func = restorestack(L, funcr); /* previous call may change stack */
setobj(func, tm); /* tag method is the new function to be called */
return func;
}
StkId luaD_precall (lua_State *L, StkId func) {
LClosure *cl;
ptrdiff_t funcr = savestack(L, func);
if (!ttisfunction(func)) /* `func' is not a function? */
func = tryfuncTM(L, func); /* check the `function' tag method */
if (L->ci + 1 == L->end_ci) luaD_growCI(L);
cl = &clvalue(func)->l;
if (!cl->isC) { /* Lua function? prepare its call */
CallInfo *ci;
Proto *p = cl->p;
if (p->is_vararg) /* varargs? */
adjust_varargs(L, p->numparams, func+1);
luaD_checkstack(L, p->maxstacksize);
ci = ++L->ci; /* now `enter' new function */
ci->base = restorestack(L, funcr) + 1;
ci->top = ci->base + p->maxstacksize;
ci->u.l.savedpc = p->code; /* starting point */
ci->state = CI_SAVEDPC;
while (L->top < ci->top)
setnilvalue(L->top++);
L->top = ci->top;
return NULL;
}
else { /* if is a C function, call it */
CallInfo *ci;
int n;
luaD_checkstack(L, LUA_MINSTACK); /* ensure minimum stack size */
ci = ++L->ci; /* now `enter' new function */
ci->base = restorestack(L, funcr) + 1;
ci->top = L->top + LUA_MINSTACK;
ci->state = CI_C; /* a C function */
if (L->hookmask & LUA_MASKCALL) {
luaD_callhook(L, LUA_HOOKCALL, -1);
ci = L->ci; /* previous call may realocate `ci' */
}
lua_unlock(L);
#ifdef LUA_COMPATUPVALUES
lua_pushupvalues(L);
#endif
n = (*clvalue(ci->base-1)->c.f)(L); /* do the actual call */
lua_lock(L);
return L->top - n;
}
}
void luaD_poscall (lua_State *L, int wanted, StkId firstResult) {
StkId res;
if (L->hookmask & LUA_MASKRET) {
ptrdiff_t fr = savestack(L, firstResult); /* next call may change stack */
luaD_callhook(L, LUA_HOOKRET, -1);
firstResult = restorestack(L, fr);
}
res = L->ci->base - 1; /* res == final position of 1st result */
L->ci--;
/* move results to correct place */
while (wanted != 0 && firstResult < L->top) {
setobj(res++, firstResult++);
wanted--;
}
while (wanted-- > 0)
setnilvalue(res++);
L->top = res;
luaC_checkGC(L);
}
/*
** Call a function (C or Lua). The function to be called is at *func.
** The arguments are on the stack, right after the function.
** When returns, all the results are on the stack, starting at the original
** function position.
*/
void luaD_call (lua_State *L, StkId func, int nResults) {
StkId firstResult = luaD_precall(L, func);
if (firstResult == NULL) { /* is a Lua function? */
firstResult = luaV_execute(L); /* call it */
if (firstResult == NULL) {
luaD_poscall(L, 0, L->top);
luaG_runerror(L, "attempt to yield across tag-method/C-call boundary");
}
}
luaD_poscall(L, nResults, firstResult);
}
LUA_API void lua_cobegin (lua_State *L, int nargs) {
lua_lock(L);
luaD_precall(L, L->top - (nargs+1));
lua_unlock(L);
}
static void move_results (lua_State *L, TObject *from, TObject *to) {
while (from < to) {
setobj(L->top, from);
from++;
incr_top(L);
}
}
static void resume (lua_State *L, void *ud) {
StkId firstResult;
CallInfo *ci = L->ci;
if (ci->state & CI_C) { /* not first time (i.e. inside a yield)? */
/* finish interrupted execution of `OP_CALL' */
int nresults;
lua_assert((ci-1)->state & CI_SAVEDPC);
lua_assert(GET_OPCODE(*((ci-1)->u.l.savedpc - 1)) == OP_CALL ||
GET_OPCODE(*((ci-1)->u.l.savedpc - 1)) == OP_TAILCALL);
nresults = GETARG_C(*((ci-1)->u.l.savedpc - 1)) - 1;
luaD_poscall(L, nresults, L->top); /* complete it */
if (nresults >= 0) L->top = L->ci->top;
}
firstResult = luaV_execute(L);
if (firstResult == NULL) /* yield? */
*cast(int *, ud) = L->ci->u.c.yield_results;
else { /* return */
*cast(int *, ud) = L->top - firstResult;
luaD_poscall(L, LUA_MULTRET, firstResult); /* finalize this coroutine */
}
}
LUA_API int lua_resume (lua_State *L, lua_State *co) {
CallInfo *ci;
int numres;
int status;
lua_lock(L);
ci = co->ci;
if (ci == co->base_ci) /* no activation record? ?? */
luaG_runerror(L, "cannot resume dead thread");
if (co->errorJmp != NULL) /* ?? */
luaG_runerror(L, "cannot resume active thread");
status = luaD_rawrunprotected(co, resume, &numres);
if (status == 0)
move_results(L, co->top - numres, co->top);
else {
setobj(L->top++, co->top - 1); /* move error message to other stack */
co->ci = co->base_ci; /* `kill' thread */
}
lua_unlock(L);
return status;
}
LUA_API int lua_yield (lua_State *L, int nresults) {
CallInfo *ci;
lua_lock(L);
ci = L->ci;
if ((ci-1)->state & CI_C)
luaG_runerror(L, "cannot yield a C function");
lua_assert(ci->state & CI_C); /* current function is not Lua */
ci->u.c.yield_results = nresults;
lua_unlock(L);
return -1;
}
/*
** Execute a protected call.
*/
struct CallS { /* data to `f_call' */
StkId func;
int nresults;
};
static void f_call (lua_State *L, void *ud) {
struct CallS *c = cast(struct CallS *, ud);
luaD_call(L, c->func, c->nresults);
}
int luaD_pcall (lua_State *L, int nargs, int nresults, ptrdiff_t errfunc) {
struct CallS c;
int status;
ptrdiff_t old_top = savestack(L, L->top);
ptrdiff_t old_ci = saveci(L, L->ci);
int old_allowhooks = allowhook(L);
ptrdiff_t old_errfunc = L->errfunc;
L->errfunc = errfunc;
c.func = L->top - (nargs+1); /* function to be called */
c.nresults = nresults;
status = luaD_rawrunprotected(L, &f_call, &c);
if (status != 0) { /* an error occurred? */
StkId err; /* error msg. position */
seterrorobj(L, status);
err = L->top - 1;
/* remove parameters and func from the stack */
L->top = restorestack(L, old_top) - (nargs+1);
setobj(L->top++, err); /* copy error message to corrected top */
luaF_close(L, L->top); /* close eventual pending closures */
L->ci = restoreci(L, old_ci);
setallowhook(L, old_allowhooks);
restore_stack_limit(L);
}
L->errfunc = old_errfunc;
return status;
}
/*
** Execute a protected parser.
*/
struct SParser { /* data to `f_parser' */
ZIO *z;
int bin;
};
static void f_parser (lua_State *L, void *ud) {
struct SParser *p = cast(struct SParser *, ud);
Proto *tf = p->bin ? luaU_undump(L, p->z) : luaY_parser(L, p->z);
Closure *cl = luaF_newLclosure(L, 0, gt(L));
cl->l.p = tf;
setclvalue(L->top, cl);
incr_top(L);
}
int luaD_protectedparser (lua_State *L, ZIO *z, int bin) {
struct SParser p;
lu_mem old_blocks;
int status;
ptrdiff_t oldtopr = savestack(L, L->top); /* save current top */
p.z = z; p.bin = bin;
/* before parsing, give a (good) chance to GC */
if (G(L)->nblocks + G(L)->nblocks/4 >= G(L)->GCthreshold)
luaC_collectgarbage(L);
old_blocks = G(L)->nblocks;
status = luaD_rawrunprotected(L, f_parser, &p);
if (status == 0) {
/* add new memory to threshold (as it probably will stay) */
lua_assert(G(L)->nblocks >= old_blocks);
G(L)->GCthreshold += (G(L)->nblocks - old_blocks);
}
else { /* error */
StkId oldtop = restorestack(L, oldtopr);
seterrorobj(L, status);
setobj(oldtop, L->top - 1); /* copy error message to old top */
L->top = oldtop+1;
}
return status;
}

52
ldo.h
View File

@@ -1,52 +0,0 @@
/*
** $Id: ldo.h,v 1.50 2002/08/06 15:32:22 roberto Exp roberto $
** Stack and Call structure of Lua
** See Copyright Notice in lua.h
*/
#ifndef ldo_h
#define ldo_h
#include "lobject.h"
#include "lstate.h"
#include "lzio.h"
/*
** macro to increment stack top.
** There must be always an empty slot at the L->stack.top
*/
#define incr_top(L) \
{if (L->top >= L->stack_last) luaD_growstack(L, 1); L->top++;}
#define luaD_checkstack(L,n) \
if ((char *)L->stack_last - (char *)L->top <= (n)*(int)sizeof(TObject)) \
luaD_growstack(L, n)
#define savestack(L,p) ((char *)(p) - (char *)L->stack)
#define restorestack(L,n) ((TObject *)((char *)L->stack + (n)))
#define saveci(L,p) ((char *)(p) - (char *)L->base_ci)
#define restoreci(L,n) ((CallInfo *)((char *)L->base_ci + (n)))
/* type of protected functions, to be ran by `runprotected' */
typedef void (*Pfunc) (lua_State *L, void *ud);
void luaD_resetprotection (lua_State *L);
int luaD_protectedparser (lua_State *L, ZIO *z, int bin);
void luaD_callhook (lua_State *L, lua_Hookevent event, int line);
StkId luaD_precall (lua_State *L, StkId func);
void luaD_call (lua_State *L, StkId func, int nResults);
int luaD_pcall (lua_State *L, int nargs, int nresults, ptrdiff_t errfunc);
void luaD_poscall (lua_State *L, int wanted, StkId firstResult);
void luaD_reallocCI (lua_State *L, int newsize);
void luaD_reallocstack (lua_State *L, int newsize);
void luaD_growstack (lua_State *L, int n);
void luaD_throw (lua_State *L, int errcode);
int luaD_rawrunprotected (lua_State *L, Pfunc f, void *ud);
#endif

923
lex_yy.c Normal file
View File

@@ -0,0 +1,923 @@
# include "stdio.h"
# define U(x) x
# define NLSTATE yyprevious=YYNEWLINE
# define BEGIN yybgin = yysvec + 1 +
# define INITIAL 0
# define YYLERR yysvec
# define YYSTATE (yyestate-yysvec-1)
# define YYOPTIM 1
# define YYLMAX BUFSIZ
# define output(c) putc(c,yyout)
# define input() (((yytchar=yysptr>yysbuf?U(*--yysptr):getc(yyin))==10?(yylineno++,yytchar):yytchar)==EOF?0:yytchar)
# define unput(c) {yytchar= (c);if(yytchar=='\n')yylineno--;*yysptr++=yytchar;}
# define yymore() (yymorfg=1)
# define ECHO fprintf(yyout, "%s",yytext)
# define REJECT { nstr = yyreject(); goto yyfussy;}
int yyleng; extern char yytext[];
int yymorfg;
extern char *yysptr, yysbuf[];
int yytchar;
FILE *yyin = {stdin}, *yyout = {stdout};
extern int yylineno;
struct yysvf {
struct yywork *yystoff;
struct yysvf *yyother;
int *yystops;};
struct yysvf *yyestate;
extern struct yysvf yysvec[], *yybgin;
#include <stdlib.h>
#include <string.h>
#include "opcode.h"
#include "hash.h"
#include "inout.h"
#include "table.h"
#include "y_tab.h"
#undef input
#undef unput
static Input input;
static Unput unput;
void lua_setinput (Input fn)
{
input = fn;
}
void lua_setunput (Unput fn)
{
unput = fn;
}
char *lua_lasttext (void)
{
return yytext;
}
# define YYNEWLINE 10
yylex(){
int nstr; extern int yyprevious;
while((nstr = yylook()) >= 0)
yyfussy: switch(nstr){
case 0:
if(yywrap()) return(0); break;
case 1:
;
break;
case 2:
{yylval.vInt = 1; return DEBUG;}
break;
case 3:
{yylval.vInt = 0; return DEBUG;}
break;
case 4:
lua_linenumber++;
break;
case 5:
;
break;
case 6:
return LOCAL;
break;
case 7:
return IF;
break;
case 8:
return THEN;
break;
case 9:
return ELSE;
break;
case 10:
return ELSEIF;
break;
case 11:
return WHILE;
break;
case 12:
return DO;
break;
case 13:
return REPEAT;
break;
case 14:
return UNTIL;
break;
case 15:
{
yylval.vWord = lua_nfile-1;
return FUNCTION;
}
break;
case 16:
return END;
break;
case 17:
return RETURN;
break;
case 18:
return LOCAL;
break;
case 19:
return NIL;
break;
case 20:
return AND;
break;
case 21:
return OR;
break;
case 22:
return NOT;
break;
case 23:
return NE;
break;
case 24:
return LE;
break;
case 25:
return GE;
break;
case 26:
return CONC;
break;
case 27:
case 28:
{
yylval.vWord = lua_findenclosedconstant (yytext);
return STRING;
}
break;
case 29:
case 30:
case 31:
case 32:
{
yylval.vFloat = atof(yytext);
return NUMBER;
}
break;
case 33:
{
yylval.vWord = lua_findsymbol (yytext);
return NAME;
}
break;
case 34:
return *yytext;
break;
case -1:
break;
default:
fprintf(yyout,"bad switch yylook %d",nstr);
} return(0); }
/* end of yylex */
int yyvstop[] = {
0,
1,
0,
1,
0,
34,
0,
1,
34,
0,
4,
0,
34,
0,
34,
0,
34,
0,
34,
0,
29,
34,
0,
34,
0,
34,
0,
33,
34,
0,
33,
34,
0,
33,
34,
0,
33,
34,
0,
33,
34,
0,
33,
34,
0,
33,
34,
0,
33,
34,
0,
33,
34,
0,
33,
34,
0,
33,
34,
0,
33,
34,
0,
33,
34,
0,
34,
0,
34,
0,
1,
0,
27,
0,
28,
0,
5,
0,
26,
0,
30,
0,
29,
0,
29,
0,
24,
0,
25,
0,
33,
0,
33,
0,
12,
33,
0,
33,
0,
33,
0,
33,
0,
7,
33,
0,
33,
0,
33,
0,
33,
0,
21,
33,
0,
33,
0,
33,
0,
33,
0,
33,
0,
23,
0,
29,
30,
0,
31,
0,
20,
33,
0,
33,
0,
16,
33,
0,
33,
0,
33,
0,
19,
33,
0,
22,
33,
0,
33,
0,
33,
0,
33,
0,
33,
0,
33,
0,
32,
0,
9,
33,
0,
33,
0,
33,
0,
33,
0,
33,
0,
8,
33,
0,
33,
0,
33,
0,
31,
32,
0,
33,
0,
33,
0,
6,
18,
33,
0,
33,
0,
33,
0,
14,
33,
0,
11,
33,
0,
10,
33,
0,
33,
0,
13,
33,
0,
17,
33,
0,
2,
0,
33,
0,
15,
33,
0,
3,
0,
0};
# define YYTYPE char
struct yywork { YYTYPE verify, advance; } yycrank[] = {
0,0, 0,0, 1,3, 0,0,
0,0, 0,0, 0,0, 0,0,
0,0, 0,0, 1,4, 1,5,
6,29, 4,28, 0,0, 0,0,
0,0, 0,0, 7,31, 0,0,
6,29, 6,29, 0,0, 0,0,
0,0, 0,0, 7,31, 7,31,
0,0, 0,0, 0,0, 0,0,
0,0, 0,0, 0,0, 1,6,
4,28, 0,0, 0,0, 0,0,
1,7, 0,0, 0,0, 0,0,
1,3, 6,30, 1,8, 1,9,
0,0, 1,10, 6,29, 7,31,
8,33, 0,0, 6,29, 0,0,
7,32, 0,0, 0,0, 6,29,
7,31, 1,11, 0,0, 1,12,
2,27, 7,31, 1,13, 11,39,
12,40, 1,13, 26,56, 0,0,
0,0, 2,8, 2,9, 0,0,
6,29, 0,0, 0,0, 6,29,
0,0, 0,0, 7,31, 0,0,
0,0, 7,31, 0,0, 0,0,
2,11, 0,0, 2,12, 0,0,
0,0, 0,0, 0,0, 0,0,
0,0, 0,0, 1,14, 0,0,
0,0, 1,15, 1,16, 1,17,
0,0, 22,52, 1,18, 18,47,
23,53, 1,19, 42,63, 1,20,
1,21, 25,55, 14,42, 1,22,
15,43, 1,23, 1,24, 16,44,
1,25, 16,45, 17,46, 19,48,
21,51, 2,14, 20,49, 1,26,
2,15, 2,16, 2,17, 24,54,
20,50, 2,18, 44,64, 45,65,
2,19, 46,66, 2,20, 2,21,
27,57, 48,67, 2,22, 49,68,
2,23, 2,24, 50,69, 2,25,
52,70, 53,72, 27,58, 54,73,
52,71, 9,34, 2,26, 9,35,
9,35, 9,35, 9,35, 9,35,
9,35, 9,35, 9,35, 9,35,
9,35, 10,36, 55,74, 10,37,
10,37, 10,37, 10,37, 10,37,
10,37, 10,37, 10,37, 10,37,
10,37, 57,75, 58,76, 64,80,
66,81, 67,82, 70,83, 71,84,
72,85, 73,86, 74,87, 10,38,
10,38, 38,61, 10,38, 38,61,
75,88, 76,89, 38,62, 38,62,
38,62, 38,62, 38,62, 38,62,
38,62, 38,62, 38,62, 38,62,
80,92, 81,93, 13,41, 13,41,
13,41, 13,41, 13,41, 13,41,
13,41, 13,41, 13,41, 13,41,
82,94, 83,95, 84,96, 10,38,
10,38, 86,97, 10,38, 13,41,
13,41, 13,41, 13,41, 13,41,
13,41, 13,41, 13,41, 13,41,
13,41, 13,41, 13,41, 13,41,
13,41, 13,41, 13,41, 13,41,
13,41, 13,41, 13,41, 13,41,
13,41, 13,41, 13,41, 13,41,
13,41, 87,98, 88,99, 60,79,
60,79, 13,41, 60,79, 13,41,
13,41, 13,41, 13,41, 13,41,
13,41, 13,41, 13,41, 13,41,
13,41, 13,41, 13,41, 13,41,
13,41, 13,41, 13,41, 13,41,
13,41, 13,41, 13,41, 13,41,
13,41, 13,41, 13,41, 13,41,
13,41, 33,33, 89,100, 60,79,
60,79, 92,101, 60,79, 93,102,
95,103, 33,33, 33,0, 96,104,
99,105, 100,106, 102,107, 106,108,
107,109, 35,35, 35,35, 35,35,
35,35, 35,35, 35,35, 35,35,
35,35, 35,35, 35,35, 108,110,
0,0, 0,0, 0,0, 0,0,
0,0, 0,0, 33,33, 0,0,
0,0, 35,59, 35,59, 33,33,
35,59, 0,0, 0,0, 33,33,
0,0, 0,0, 0,0, 0,0,
33,33, 0,0, 0,0, 0,0,
0,0, 36,60, 36,60, 36,60,
36,60, 36,60, 36,60, 36,60,
36,60, 36,60, 36,60, 0,0,
0,0, 33,33, 0,0, 0,0,
33,33, 35,59, 35,59, 0,0,
35,59, 36,38, 36,38, 59,77,
36,38, 59,77, 0,0, 0,0,
59,78, 59,78, 59,78, 59,78,
59,78, 59,78, 59,78, 59,78,
59,78, 59,78, 61,62, 61,62,
61,62, 61,62, 61,62, 61,62,
61,62, 61,62, 61,62, 61,62,
0,0, 0,0, 0,0, 0,0,
0,0, 36,38, 36,38, 0,0,
36,38, 77,78, 77,78, 77,78,
77,78, 77,78, 77,78, 77,78,
77,78, 77,78, 77,78, 79,90,
0,0, 79,90, 0,0, 0,0,
79,91, 79,91, 79,91, 79,91,
79,91, 79,91, 79,91, 79,91,
79,91, 79,91, 90,91, 90,91,
90,91, 90,91, 90,91, 90,91,
90,91, 90,91, 90,91, 90,91,
0,0};
struct yysvf yysvec[] = {
0, 0, 0,
yycrank+-1, 0, yyvstop+1,
yycrank+-28, yysvec+1, yyvstop+3,
yycrank+0, 0, yyvstop+5,
yycrank+4, 0, yyvstop+7,
yycrank+0, 0, yyvstop+10,
yycrank+-11, 0, yyvstop+12,
yycrank+-17, 0, yyvstop+14,
yycrank+7, 0, yyvstop+16,
yycrank+107, 0, yyvstop+18,
yycrank+119, 0, yyvstop+20,
yycrank+6, 0, yyvstop+23,
yycrank+7, 0, yyvstop+25,
yycrank+158, 0, yyvstop+27,
yycrank+4, yysvec+13, yyvstop+30,
yycrank+5, yysvec+13, yyvstop+33,
yycrank+11, yysvec+13, yyvstop+36,
yycrank+5, yysvec+13, yyvstop+39,
yycrank+5, yysvec+13, yyvstop+42,
yycrank+12, yysvec+13, yyvstop+45,
yycrank+21, yysvec+13, yyvstop+48,
yycrank+10, yysvec+13, yyvstop+51,
yycrank+4, yysvec+13, yyvstop+54,
yycrank+4, yysvec+13, yyvstop+57,
yycrank+21, yysvec+13, yyvstop+60,
yycrank+9, yysvec+13, yyvstop+63,
yycrank+9, 0, yyvstop+66,
yycrank+40, 0, yyvstop+68,
yycrank+0, yysvec+4, yyvstop+70,
yycrank+0, yysvec+6, 0,
yycrank+0, 0, yyvstop+72,
yycrank+0, yysvec+7, 0,
yycrank+0, 0, yyvstop+74,
yycrank+-280, 0, yyvstop+76,
yycrank+0, 0, yyvstop+78,
yycrank+249, 0, yyvstop+80,
yycrank+285, 0, yyvstop+82,
yycrank+0, yysvec+10, yyvstop+84,
yycrank+146, 0, 0,
yycrank+0, 0, yyvstop+86,
yycrank+0, 0, yyvstop+88,
yycrank+0, yysvec+13, yyvstop+90,
yycrank+10, yysvec+13, yyvstop+92,
yycrank+0, yysvec+13, yyvstop+94,
yycrank+19, yysvec+13, yyvstop+97,
yycrank+35, yysvec+13, yyvstop+99,
yycrank+27, yysvec+13, yyvstop+101,
yycrank+0, yysvec+13, yyvstop+103,
yycrank+42, yysvec+13, yyvstop+106,
yycrank+35, yysvec+13, yyvstop+108,
yycrank+30, yysvec+13, yyvstop+110,
yycrank+0, yysvec+13, yyvstop+112,
yycrank+36, yysvec+13, yyvstop+115,
yycrank+48, yysvec+13, yyvstop+117,
yycrank+35, yysvec+13, yyvstop+119,
yycrank+61, yysvec+13, yyvstop+121,
yycrank+0, 0, yyvstop+123,
yycrank+76, 0, 0,
yycrank+67, 0, 0,
yycrank+312, 0, 0,
yycrank+183, yysvec+36, yyvstop+125,
yycrank+322, 0, 0,
yycrank+0, yysvec+61, yyvstop+128,
yycrank+0, yysvec+13, yyvstop+130,
yycrank+78, yysvec+13, yyvstop+133,
yycrank+0, yysvec+13, yyvstop+135,
yycrank+81, yysvec+13, yyvstop+138,
yycrank+84, yysvec+13, yyvstop+140,
yycrank+0, yysvec+13, yyvstop+142,
yycrank+0, yysvec+13, yyvstop+145,
yycrank+81, yysvec+13, yyvstop+148,
yycrank+66, yysvec+13, yyvstop+150,
yycrank+74, yysvec+13, yyvstop+152,
yycrank+80, yysvec+13, yyvstop+154,
yycrank+78, yysvec+13, yyvstop+156,
yycrank+94, 0, 0,
yycrank+93, 0, 0,
yycrank+341, 0, 0,
yycrank+0, yysvec+77, yyvstop+158,
yycrank+356, 0, 0,
yycrank+99, yysvec+13, yyvstop+160,
yycrank+89, yysvec+13, yyvstop+163,
yycrank+108, yysvec+13, yyvstop+165,
yycrank+120, yysvec+13, yyvstop+167,
yycrank+104, yysvec+13, yyvstop+169,
yycrank+0, yysvec+13, yyvstop+171,
yycrank+113, yysvec+13, yyvstop+174,
yycrank+148, yysvec+13, yyvstop+176,
yycrank+133, 0, 0,
yycrank+181, 0, 0,
yycrank+366, 0, 0,
yycrank+0, yysvec+90, yyvstop+178,
yycrank+183, yysvec+13, yyvstop+181,
yycrank+182, yysvec+13, yyvstop+183,
yycrank+0, yysvec+13, yyvstop+185,
yycrank+172, yysvec+13, yyvstop+189,
yycrank+181, yysvec+13, yyvstop+191,
yycrank+0, yysvec+13, yyvstop+193,
yycrank+0, yysvec+13, yyvstop+196,
yycrank+189, 0, 0,
yycrank+195, 0, 0,
yycrank+0, yysvec+13, yyvstop+199,
yycrank+183, yysvec+13, yyvstop+202,
yycrank+0, yysvec+13, yyvstop+204,
yycrank+0, yysvec+13, yyvstop+207,
yycrank+0, 0, yyvstop+210,
yycrank+178, 0, 0,
yycrank+186, yysvec+13, yyvstop+212,
yycrank+204, 0, 0,
yycrank+0, yysvec+13, yyvstop+214,
yycrank+0, 0, yyvstop+217,
0, 0, 0};
struct yywork *yytop = yycrank+423;
struct yysvf *yybgin = yysvec+1;
char yymatch[] = {
00 ,01 ,01 ,01 ,01 ,01 ,01 ,01 ,
01 ,011 ,012 ,01 ,01 ,01 ,01 ,01 ,
01 ,01 ,01 ,01 ,01 ,01 ,01 ,01 ,
01 ,01 ,01 ,01 ,01 ,01 ,01 ,01 ,
011 ,01 ,'"' ,01 ,01 ,01 ,01 ,047 ,
01 ,01 ,01 ,'+' ,01 ,'+' ,01 ,01 ,
'0' ,'0' ,'0' ,'0' ,'0' ,'0' ,'0' ,'0' ,
'0' ,'0' ,01 ,01 ,01 ,01 ,01 ,01 ,
01 ,'A' ,'A' ,'A' ,'D' ,'D' ,'A' ,'D' ,
'A' ,'A' ,'A' ,'A' ,'A' ,'A' ,'A' ,'A' ,
'A' ,'A' ,'A' ,'A' ,'A' ,'A' ,'A' ,'A' ,
'A' ,'A' ,'A' ,01 ,01 ,01 ,01 ,'A' ,
01 ,'A' ,'A' ,'A' ,'D' ,'D' ,'A' ,'D' ,
'A' ,'A' ,'A' ,'A' ,'A' ,'A' ,'A' ,'A' ,
'A' ,'A' ,'A' ,'A' ,'A' ,'A' ,'A' ,'A' ,
'A' ,'A' ,'A' ,01 ,01 ,01 ,01 ,01 ,
0};
char yyextra[] = {
0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,
0};
#ifndef lint
static char ncform_sccsid[] = "@(#)ncform 1.6 88/02/08 SMI"; /* from S5R2 1.2 */
#endif
int yylineno =1;
# define YYU(x) x
# define NLSTATE yyprevious=YYNEWLINE
char yytext[YYLMAX];
struct yysvf *yylstate [YYLMAX], **yylsp, **yyolsp;
char yysbuf[YYLMAX];
char *yysptr = yysbuf;
int *yyfnd;
extern struct yysvf *yyestate;
int yyprevious = YYNEWLINE;
yylook(){
register struct yysvf *yystate, **lsp;
register struct yywork *yyt;
struct yysvf *yyz;
int yych, yyfirst;
struct yywork *yyr;
# ifdef LEXDEBUG
int debug;
# endif
char *yylastch;
/* start off machines */
# ifdef LEXDEBUG
debug = 0;
# endif
yyfirst=1;
if (!yymorfg)
yylastch = yytext;
else {
yymorfg=0;
yylastch = yytext+yyleng;
}
for(;;){
lsp = yylstate;
yyestate = yystate = yybgin;
if (yyprevious==YYNEWLINE) yystate++;
for (;;){
# ifdef LEXDEBUG
if(debug)fprintf(yyout,"state %d\n",yystate-yysvec-1);
# endif
yyt = yystate->yystoff;
if(yyt == yycrank && !yyfirst){ /* may not be any transitions */
yyz = yystate->yyother;
if(yyz == 0)break;
if(yyz->yystoff == yycrank)break;
}
*yylastch++ = yych = input();
yyfirst=0;
tryagain:
# ifdef LEXDEBUG
if(debug){
fprintf(yyout,"char ");
allprint(yych);
putchar('\n');
}
# endif
yyr = yyt;
if ( (int)yyt > (int)yycrank){
yyt = yyr + yych;
if (yyt <= yytop && yyt->verify+yysvec == yystate){
if(yyt->advance+yysvec == YYLERR) /* error transitions */
{unput(*--yylastch);break;}
*lsp++ = yystate = yyt->advance+yysvec;
goto contin;
}
}
# ifdef YYOPTIM
else if((int)yyt < (int)yycrank) { /* r < yycrank */
yyt = yyr = yycrank+(yycrank-yyt);
# ifdef LEXDEBUG
if(debug)fprintf(yyout,"compressed state\n");
# endif
yyt = yyt + yych;
if(yyt <= yytop && yyt->verify+yysvec == yystate){
if(yyt->advance+yysvec == YYLERR) /* error transitions */
{unput(*--yylastch);break;}
*lsp++ = yystate = yyt->advance+yysvec;
goto contin;
}
yyt = yyr + YYU(yymatch[yych]);
# ifdef LEXDEBUG
if(debug){
fprintf(yyout,"try fall back character ");
allprint(YYU(yymatch[yych]));
putchar('\n');
}
# endif
if(yyt <= yytop && yyt->verify+yysvec == yystate){
if(yyt->advance+yysvec == YYLERR) /* error transition */
{unput(*--yylastch);break;}
*lsp++ = yystate = yyt->advance+yysvec;
goto contin;
}
}
if ((yystate = yystate->yyother) && (yyt= yystate->yystoff) != yycrank){
# ifdef LEXDEBUG
if(debug)fprintf(yyout,"fall back to state %d\n",yystate-yysvec-1);
# endif
goto tryagain;
}
# endif
else
{unput(*--yylastch);break;}
contin:
# ifdef LEXDEBUG
if(debug){
fprintf(yyout,"state %d char ",yystate-yysvec-1);
allprint(yych);
putchar('\n');
}
# endif
;
}
# ifdef LEXDEBUG
if(debug){
fprintf(yyout,"stopped at %d with ",*(lsp-1)-yysvec-1);
allprint(yych);
putchar('\n');
}
# endif
while (lsp-- > yylstate){
*yylastch-- = 0;
if (*lsp != 0 && (yyfnd= (*lsp)->yystops) && *yyfnd > 0){
yyolsp = lsp;
if(yyextra[*yyfnd]){ /* must backup */
while(yyback((*lsp)->yystops,-*yyfnd) != 1 && lsp > yylstate){
lsp--;
unput(*yylastch--);
}
}
yyprevious = YYU(*yylastch);
yylsp = lsp;
yyleng = yylastch-yytext+1;
yytext[yyleng] = 0;
# ifdef LEXDEBUG
if(debug){
fprintf(yyout,"\nmatch ");
sprint(yytext);
fprintf(yyout," action %d\n",*yyfnd);
}
# endif
return(*yyfnd++);
}
unput(*yylastch);
}
if (yytext[0] == 0 /* && feof(yyin) */)
{
yysptr=yysbuf;
return(0);
}
yyprevious = yytext[0] = input();
if (yyprevious>0)
output(yyprevious);
yylastch=yytext;
# ifdef LEXDEBUG
if(debug)putchar('\n');
# endif
}
}
yyback(p, m)
int *p;
{
if (p==0) return(0);
while (*p)
{
if (*p++ == m)
return(1);
}
return(0);
}
/* the following are only used in the lex library */
yyinput(){
return(input());
}
yyoutput(c)
int c; {
output(c);
}
yyunput(c)
int c; {
unput(c);
}

133
lfunc.c
View File

@@ -1,133 +0,0 @@
/*
** $Id: lfunc.c,v 1.56 2002/05/02 13:06:20 roberto Exp roberto $
** Auxiliary functions to manipulate prototypes and closures
** See Copyright Notice in lua.h
*/
#include <stdlib.h>
#include "lua.h"
#include "lfunc.h"
#include "lmem.h"
#include "lobject.h"
#include "lstate.h"
#define sizeCclosure(n) (cast(int, sizeof(CClosure)) + \
cast(int, sizeof(TObject)*((n)-1)))
#define sizeLclosure(n) (cast(int, sizeof(LClosure)) + \
cast(int, sizeof(TObject *)*((n)-1)))
Closure *luaF_newCclosure (lua_State *L, int nelems) {
Closure *c = cast(Closure *, luaM_malloc(L, sizeCclosure(nelems)));
c->c.isC = 1;
c->c.next = G(L)->rootcl;
G(L)->rootcl = c;
c->c.marked = 0;
c->c.nupvalues = cast(lu_byte, nelems);
return c;
}
Closure *luaF_newLclosure (lua_State *L, int nelems, TObject *gt) {
Closure *c = cast(Closure *, luaM_malloc(L, sizeLclosure(nelems)));
c->l.isC = 0;
c->c.next = G(L)->rootcl;
G(L)->rootcl = c;
c->l.marked = 0;
c->l.g = *gt;
c->l.nupvalues = cast(lu_byte, nelems);
return c;
}
UpVal *luaF_findupval (lua_State *L, StkId level) {
UpVal **pp = &L->openupval;
UpVal *p;
while ((p = *pp) != NULL && p->v >= level) {
if (p->v == level) return p;
pp = &p->next;
}
p = luaM_new(L, UpVal); /* not found: create a new one */
p->v = level; /* current value lives in the stack */
p->next = *pp; /* chain it in the proper position */
*pp = p;
return p;
}
void luaF_close (lua_State *L, StkId level) {
UpVal *p;
while ((p = L->openupval) != NULL && p->v >= level) {
setobj(&p->value, p->v); /* save current value */
p->v = &p->value; /* now current value lives here */
L->openupval = p->next; /* remove from `open' list */
p->next = G(L)->rootupval; /* chain in `closed' list */
G(L)->rootupval = p;
}
}
Proto *luaF_newproto (lua_State *L) {
Proto *f = luaM_new(L, Proto);
f->k = NULL;
f->sizek = 0;
f->p = NULL;
f->sizep = 0;
f->code = NULL;
f->sizecode = 0;
f->nupvalues = 0;
f->numparams = 0;
f->is_vararg = 0;
f->maxstacksize = 0;
f->marked = 0;
f->lineinfo = NULL;
f->sizelocvars = 0;
f->locvars = NULL;
f->lineDefined = 0;
f->source = NULL;
f->next = G(L)->rootproto; /* chain in list of protos */
G(L)->rootproto = f;
return f;
}
void luaF_freeproto (lua_State *L, Proto *f) {
luaM_freearray(L, f->code, f->sizecode, Instruction);
if (f->lineinfo)
luaM_freearray(L, f->lineinfo, f->sizecode, int);
luaM_freearray(L, f->locvars, f->sizelocvars, struct LocVar);
luaM_freearray(L, f->k, f->sizek, TObject);
luaM_freearray(L, f->p, f->sizep, Proto *);
luaM_freelem(L, f);
}
void luaF_freeclosure (lua_State *L, Closure *c) {
int size = (c->c.isC) ? sizeCclosure(c->c.nupvalues) :
sizeLclosure(c->l.nupvalues);
luaM_free(L, c, size);
}
/*
** Look for n-th local variable at line `line' in function `func'.
** Returns NULL if not found.
*/
const char *luaF_getlocalname (const Proto *f, int local_number, int pc) {
int i;
for (i = 0; i<f->sizelocvars && f->locvars[i].startpc <= pc; i++) {
if (pc < f->locvars[i].endpc) { /* is variable active? */
local_number--;
if (local_number == 0)
return getstr(f->locvars[i].varname);
}
}
return NULL; /* not found */
}

25
lfunc.h
View File

@@ -1,25 +0,0 @@
/*
** $Id: lfunc.h,v 1.19 2001/11/29 20:22:22 roberto Exp roberto $
** Auxiliary functions to manipulate prototypes and closures
** See Copyright Notice in lua.h
*/
#ifndef lfunc_h
#define lfunc_h
#include "lobject.h"
Proto *luaF_newproto (lua_State *L);
Closure *luaF_newCclosure (lua_State *L, int nelems);
Closure *luaF_newLclosure (lua_State *L, int nelems, TObject *gt);
UpVal *luaF_findupval (lua_State *L, StkId level);
void luaF_close (lua_State *L, StkId level);
void luaF_freeproto (lua_State *L, Proto *f);
void luaF_freeclosure (lua_State *L, Closure *c);
const char *luaF_getlocalname (const Proto *func, int local_number, int pc);
#endif

494
lgc.c
View File

@@ -1,494 +0,0 @@
/*
** $Id: lgc.c,v 1.144 2002/08/05 14:50:39 roberto Exp roberto $
** Garbage Collector
** See Copyright Notice in lua.h
*/
#include <string.h>
#include "lua.h"
#include "ldebug.h"
#include "ldo.h"
#include "lfunc.h"
#include "lgc.h"
#include "lmem.h"
#include "lobject.h"
#include "lstate.h"
#include "lstring.h"
#include "ltable.h"
#include "ltm.h"
typedef struct GCState {
Table *tmark; /* list of marked tables to be visited */
Table *toclear; /* list of visited weak tables (to be cleared after GC) */
lua_State *L;
} GCState;
/* mark a string; marks larger than 1 cannot be changed */
#define strmark(s) {if ((s)->tsv.marked == 0) (s)->tsv.marked = 1;}
/* unmarked tables are represented by pointing `mark' to themselves */
#define ismarked(x) ((x)->mark != (x))
/* mark tricks for userdata */
#define isudmarked(u) (u->uv.len & 1)
#define markud(u) (u->uv.len |= 1)
#define unmarkud(u) (u->uv.len &= (~(size_t)1))
#define isfinalized(u) (u->uv.len & 2)
#define markfinalized(u) (u->uv.len |= 2)
/* mark tricks for upvalues (assume that open upvalues are always marked) */
#define isupvalmarked(uv) ((uv)->v != &(uv)->value)
#define ismarkable(o) (!((1 << ttype(o)) & \
((1 << LUA_TNIL) | (1 << LUA_TNUMBER) | \
(1 << LUA_TBOOLEAN) | (1 << LUA_TLIGHTUSERDATA))))
static void reallymarkobject (GCState *st, TObject *o);
#define markobject(st,o) if (ismarkable(o)) reallymarkobject(st,o)
static void protomark (Proto *f) {
if (!f->marked) {
int i;
f->marked = 1;
strmark(f->source);
for (i=0; i<f->sizek; i++) {
if (ttisstring(f->k+i))
strmark(tsvalue(f->k+i));
}
for (i=0; i<f->sizep; i++)
protomark(f->p[i]);
for (i=0; i<f->sizelocvars; i++) /* mark local-variable names */
strmark(f->locvars[i].varname);
}
lua_assert(luaG_checkcode(f));
}
static void marktable (GCState *st, Table *h) {
if (!ismarked(h)) {
h->mark = st->tmark; /* chain it for later traversal */
st->tmark = h;
}
}
static void markclosure (GCState *st, Closure *cl) {
if (!cl->c.marked) {
cl->c.marked = 1;
if (cl->c.isC) {
int i;
for (i=0; i<cl->c.nupvalues; i++) /* mark its upvalues */
markobject(st, &cl->c.upvalue[i]);
}
else {
int i;
lua_assert(cl->l.nupvalues == cl->l.p->nupvalues);
marktable(st, hvalue(&cl->l.g));
protomark(cl->l.p);
for (i=0; i<cl->l.nupvalues; i++) { /* mark its upvalues */
UpVal *u = cl->l.upvals[i];
if (!isupvalmarked(u)) {
markobject(st, &u->value);
u->v = NULL; /* mark it! */
}
}
}
}
}
static void markudata (GCState *st, Udata *u) {
markud(u);
marktable(st, u->uv.metatable);
}
static void reallymarkobject (GCState *st, TObject *o) {
switch (ttype(o)) {
case LUA_TSTRING:
strmark(tsvalue(o));
break;
case LUA_TUSERDATA:
if (!isudmarked(uvalue(o)))
markudata(st, uvalue(o));
break;
case LUA_TFUNCTION:
markclosure(st, clvalue(o));
break;
case LUA_TTABLE: {
marktable(st, hvalue(o));
break;
}
default: lua_assert(0); /* should not be called with other types */
}
}
static void checkstacksizes (lua_State *L, StkId max) {
int used = L->ci - L->base_ci; /* number of `ci' in use */
if (4*used < L->size_ci && 2*BASIC_CI_SIZE < L->size_ci)
luaD_reallocCI(L, L->size_ci/2); /* still big enough... */
used = max - L->stack; /* part of stack in use */
if (4*used < L->stacksize && 2*(BASIC_STACK_SIZE+EXTRA_STACK) < L->stacksize)
luaD_reallocstack(L, L->stacksize/2); /* still big enough... */
}
static void markstacks (GCState *st) {
lua_State *L1 = st->L;
do { /* for each thread */
StkId o, lim;
CallInfo *ci;
if (ttisnil(defaultmeta(L1))) { /* incomplete state? */
lua_assert(L1 != st->L);
L1 = L1->next;
luaE_closethread(st->L, L1->previous); /* collect it */
continue;
}
markobject(st, defaultmeta(L1));
markobject(st, gt(L1));
markobject(st, registry(L1));
for (o=L1->stack; o<L1->top; o++)
markobject(st, o);
lim = o;
for (ci = L1->base_ci; ci <= L1->ci; ci++) {
lua_assert(ci->top <= L1->stack_last);
if (lim < ci->top) lim = ci->top;
}
for (; o<=lim; o++) setnilvalue(o);
checkstacksizes(L1, lim);
lua_assert(L1->previous->next == L1 && L1->next->previous == L1);
L1 = L1->next;
} while (L1 != st->L);
}
static void marktmu (GCState *st) {
Udata *u;
for (u = G(st->L)->tmudata; u; u = u->uv.next)
markudata(st, u);
}
/* move `dead' udata that need finalization to list `tmudata' */
static void separateudata (lua_State *L) {
Udata **p = &G(L)->rootudata;
Udata *curr;
Udata *collected = NULL; /* to collect udata with gc event */
Udata **lastcollected = &collected;
while ((curr = *p) != NULL) {
if (isudmarked(curr) || isfinalized(curr) ||
(fasttm(L, curr->uv.metatable, TM_GC) == NULL))
p = &curr->uv.next;
else { /* must call its gc method */
*p = curr->uv.next;
curr->uv.next = NULL; /* link `curr' at the end of `collected' list */
*lastcollected = curr;
lastcollected = &curr->uv.next;
}
}
/* insert collected udata with gc event into `tmudata' list */
*lastcollected = G(L)->tmudata;
G(L)->tmudata = collected;
}
static void removekey (Node *n) {
setnilvalue(val(n)); /* remove corresponding value ... */
if (ismarkable(key(n)))
setttype(key(n), LUA_TNONE); /* dead key; remove it */
}
static void traversetable (GCState *st, Table *h) {
int i;
int weakkey = 0;
int weakvalue = 0;
marktable(st, h->metatable);
lua_assert(h->lsizenode || h->node == G(st->L)->dummynode);
if (h->mode & (WEAKKEY | WEAKVALUE)) { /* weak table? */
weakkey = h->mode & WEAKKEY;
weakvalue = h->mode & WEAKVALUE;
h->mark = st->toclear; /* must be cleared after GC, ... */
st->toclear = h; /* ... so put in the appropriate list */
}
if (!weakvalue) {
i = sizearray(h);
while (i--)
markobject(st, &h->array[i]);
}
i = sizenode(h);
while (i--) {
Node *n = node(h, i);
if (!ttisnil(val(n))) {
lua_assert(!ttisnil(key(n)));
if (!weakkey) markobject(st, key(n));
if (!weakvalue) markobject(st, val(n));
}
}
}
static void propagatemarks (GCState *st) {
while (st->tmark) { /* traverse marked tables */
Table *h = st->tmark; /* get first table from list */
st->tmark = h->mark; /* remove it from list */
traversetable(st, h);
}
}
static int hasmark (const TObject *o) {
switch (ttype(o)) {
case LUA_TUSERDATA:
return isudmarked(uvalue(o));
case LUA_TTABLE:
return ismarked(hvalue(o));
case LUA_TFUNCTION:
return clvalue(o)->c.marked;
case LUA_TSTRING:
strmark(tsvalue(o)); /* strings are `values', so are never weak */
/* go through */
default: /* number, nil, boolean, udataval */
return 1;
}
}
/*
** clear collected keys from weaktables
*/
static void cleartablekeys (GCState *st) {
Table *h;
for (h = st->toclear; h; h = h->mark) {
lua_assert(h->mode & (WEAKKEY | WEAKVALUE));
if ((h->mode & WEAKKEY)) { /* table may have collected keys? */
int i = sizenode(h);
while (i--) {
Node *n = node(h, i);
if (!hasmark(key(n))) /* key was collected? */
removekey(n); /* remove entry from table */
}
}
}
}
/*
** clear collected values from weaktables
*/
static void cleartablevalues (GCState *st) {
Table *h;
for (h = st->toclear; h; h = h->mark) {
if ((h->mode & WEAKVALUE)) { /* table may have collected values? */
int i = sizearray(h);
while (i--) {
TObject *o = &h->array[i];
if (!hasmark(o)) /* value was collected? */
setnilvalue(o); /* remove value */
}
i = sizenode(h);
while (i--) {
Node *n = node(h, i);
if (!hasmark(val(n))) /* value was collected? */
removekey(n); /* remove entry from table */
}
}
}
}
static void collectproto (lua_State *L) {
Proto **p = &G(L)->rootproto;
Proto *curr;
while ((curr = *p) != NULL) {
if (curr->marked) {
curr->marked = 0;
p = &curr->next;
}
else {
*p = curr->next;
luaF_freeproto(L, curr);
}
}
}
static void collectclosures (lua_State *L) {
Closure **p = &G(L)->rootcl;
Closure *curr;
while ((curr = *p) != NULL) {
if (curr->c.marked) {
curr->c.marked = 0;
p = &curr->c.next;
}
else {
*p = curr->c.next;
luaF_freeclosure(L, curr);
}
}
}
static void collectupval (lua_State *L) {
UpVal **v = &G(L)->rootupval;
UpVal *curr;
while ((curr = *v) != NULL) {
if (isupvalmarked(curr)) {
lua_assert(curr->v == NULL);
curr->v = &curr->value; /* unmark */
v = &curr->next; /* next */
}
else {
*v = curr->next; /* next */
luaM_freelem(L, curr);
}
}
}
static void collecttable (lua_State *L) {
Table **p = &G(L)->roottable;
Table *curr;
while ((curr = *p) != NULL) {
if (ismarked(curr)) {
curr->mark = curr; /* unmark */
p = &curr->next;
}
else {
*p = curr->next;
luaH_free(L, curr);
}
}
}
static void collectudata (lua_State *L) {
Udata **p = &G(L)->rootudata;
Udata *curr;
while ((curr = *p) != NULL) {
if (isudmarked(curr)) {
unmarkud(curr);
p = &curr->uv.next;
}
else {
*p = curr->uv.next;
luaM_free(L, curr, sizeudata(curr->uv.len & (~(size_t)3)));
}
}
}
static void collectstrings (lua_State *L, int all) {
int i;
for (i=0; i<G(L)->strt.size; i++) { /* for each list */
TString **p = &G(L)->strt.hash[i];
TString *curr;
while ((curr = *p) != NULL) {
if (curr->tsv.marked && !all) { /* preserve? */
if (curr->tsv.marked < FIXMARK) /* does not change FIXMARKs */
curr->tsv.marked = 0;
p = &curr->tsv.nexthash;
}
else { /* collect */
*p = curr->tsv.nexthash;
G(L)->strt.nuse--;
luaM_free(L, curr, sizestring(curr->tsv.len));
}
}
}
if (G(L)->strt.nuse < cast(ls_nstr, G(L)->strt.size/4) &&
G(L)->strt.size > MINSTRTABSIZE*2)
luaS_resize(L, G(L)->strt.size/2); /* table is too big */
}
#define MINBUFFER 256
static void checkMbuffer (lua_State *L) {
if (G(L)->Mbuffsize > MINBUFFER*2) { /* is buffer too big? */
size_t newsize = G(L)->Mbuffsize/2; /* still larger than MINBUFFER */
luaM_reallocvector(L, G(L)->Mbuffer, G(L)->Mbuffsize, newsize, char);
G(L)->Mbuffsize = newsize;
}
}
static void do1gcTM (lua_State *L, Udata *udata) {
const TObject *tm = fasttm(L, udata->uv.metatable, TM_GC);
if (tm != NULL) {
setobj(L->top, tm);
setuvalue(L->top+1, udata);
L->top += 2;
luaD_call(L, L->top - 2, 0);
}
}
static void callGCTM (lua_State *L) {
int oldah = allowhook(L);
setallowhook(L, 0); /* stop debug hooks during GC tag methods */
L->top++; /* reserve space to keep udata while runs its gc method */
while (G(L)->tmudata != NULL) {
Udata *udata = G(L)->tmudata;
G(L)->tmudata = udata->uv.next; /* remove udata from `tmudata' */
udata->uv.next = G(L)->rootudata; /* return it to `root' list */
G(L)->rootudata = udata;
setuvalue(L->top - 1, udata); /* keep a reference to it */
unmarkud(udata);
markfinalized(udata);
do1gcTM(L, udata);
}
L->top--;
setallowhook(L, oldah); /* restore hooks */
}
void luaC_callallgcTM (lua_State *L) {
separateudata(L);
callGCTM(L); /* call their GC tag methods */
}
void luaC_collect (lua_State *L, int all) {
collectudata(L);
collectstrings(L, all);
collecttable(L);
collectproto(L);
collectupval(L);
collectclosures(L);
}
void luaC_collectgarbage (lua_State *L) {
GCState st;
st.L = L;
st.tmark = NULL;
st.toclear = NULL;
markstacks(&st); /* mark all stacks */
propagatemarks(&st); /* mark all reachable objects */
cleartablevalues(&st);
separateudata(L); /* separate userdata to be preserved */
marktmu(&st); /* mark `preserved' userdata */
propagatemarks(&st); /* remark */
cleartablekeys(&st);
luaC_collect(L, 0);
checkMbuffer(L);
G(L)->GCthreshold = 2*G(L)->nblocks; /* new threshold */
callGCTM(L);
}

23
lgc.h
View File

@@ -1,23 +0,0 @@
/*
** $Id: lgc.h,v 1.1 2001/11/29 22:14:34 rieru Exp rieru $
** Garbage Collector
** See Copyright Notice in lua.h
*/
#ifndef lgc_h
#define lgc_h
#include "lobject.h"
#define luaC_checkGC(L) if (G(L)->nblocks >= G(L)->GCthreshold) \
luaC_collectgarbage(L)
void luaC_callallgcTM (lua_State *L);
void luaC_collect (lua_State *L, int all);
void luaC_collectgarbage (lua_State *L);
#endif

View File

@@ -1,8 +0,0 @@
/*
** $Id: linit.c,v 1.5 2000/06/16 17:22:43 roberto Exp roberto $
** Initialization of libraries for lua.c
** See Copyright Notice in lua.h
*/
>>>>>>> This module is now obsolete, and is not part of Lua. <<<<<<<<<

630
liolib.c
View File

@@ -1,630 +0,0 @@
/*
** $Id: liolib.c,v 2.14 2002/07/17 16:25:13 roberto Exp roberto $
** Standard I/O (and system) library
** See Copyright Notice in lua.h
*/
#include <errno.h>
#include <locale.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include "lua.h"
#include "lauxlib.h"
#include "lualib.h"
/*
** {======================================================
** FILE Operations
** =======================================================
*/
#ifndef POPEN
#define pclose(f) (-1)
#endif
#define FILEHANDLE "FileHandle"
#define CLOSEDFILEHANDLE "ClosedFileHandle"
#define IO_INPUT "_input"
#define IO_OUTPUT "_output"
static int pushresult (lua_State *L, int i) {
if (i) {
lua_pushboolean(L, 1);
return 1;
}
else {
lua_pushnil(L);
lua_pushstring(L, strerror(errno));
lua_pushnumber(L, errno);
return 3;
}
}
static FILE *tofile (lua_State *L, int findex) {
FILE **f = (FILE **)lua_touserdata(L, findex);
if (f && lua_getmetatable(L, findex) &&
lua_rawequal(L, -1, lua_upvalueindex(1))) {
lua_pop(L, 1);
return *f;
}
if (findex > 0)
luaL_argerror(L, findex, "bad file");
return NULL;
}
static void newfile (lua_State *L, FILE *f) {
lua_boxpointer(L, f);
lua_pushliteral(L, FILEHANDLE);
lua_rawget(L, LUA_REGISTRYINDEX);
lua_setmetatable(L, -2);
}
static void registerfile (lua_State *L, FILE *f, const char *name,
const char *impname) {
lua_pushstring(L, name);
newfile(L, f);
if (impname) {
lua_pushstring(L, impname);
lua_pushvalue(L, -2);
lua_settable(L, -6);
}
lua_settable(L, -3);
}
static int setnewfile (lua_State *L, FILE *f) {
if (f == NULL)
return pushresult(L, 0);
else {
newfile(L, f);
return 1;
}
}
static int io_close (lua_State *L) {
FILE *f;
int status = 1;
if (lua_isnone(L, 1)) {
lua_pushstring(L, IO_OUTPUT);
lua_rawget(L, lua_upvalueindex(1));
}
f = tofile(L, 1);
if (f != stdin && f != stdout && f != stderr) {
lua_settop(L, 1); /* make sure file is on top */
lua_pushliteral(L, CLOSEDFILEHANDLE);
lua_rawget(L, LUA_REGISTRYINDEX);
lua_setmetatable(L, 1);
status = (pclose(f) != -1) || (fclose(f) == 0);
}
return pushresult(L, status);
}
static int io_open (lua_State *L) {
FILE *f = fopen(luaL_check_string(L, 1), luaL_opt_string(L, 2, "r"));
return setnewfile(L, f);
}
static int io_popen (lua_State *L) {
#ifndef POPEN
luaL_error(L, "`popen' not supported");
return 0;
#else
FILE *f = popen(luaL_check_string(L, 1), luaL_opt_string(L, 2, "r"));
return setnewfile(L, f);
#endif
}
static int io_tmpfile (lua_State *L) {
return setnewfile(L, tmpfile());
}
static FILE *getiofile (lua_State *L, const char *name) {
FILE *f;
lua_pushstring(L, name);
lua_rawget(L, lua_upvalueindex(1));
f = tofile(L, -1);
if (f == NULL)
luaL_error(L, "%s is closed", name);
return f;
}
static int g_iofile (lua_State *L, const char *name, const char *mode) {
if (lua_isnoneornil(L, 1)) {
lua_pushstring(L, name);
lua_rawget(L, lua_upvalueindex(1));
return 1;
}
else {
const char *filename = lua_tostring(L, 1);
lua_pushstring(L, name);
if (filename) {
FILE *f = fopen(filename, mode);
luaL_arg_check(L, f, 1, strerror(errno));
newfile(L, f);
}
else {
tofile(L, 1); /* check that it's a valid file handle */
lua_pushvalue(L, 1);
}
lua_rawset(L, lua_upvalueindex(1));
return 0;
}
}
static int io_input (lua_State *L) {
return g_iofile(L, IO_INPUT, "r");
}
static int io_output (lua_State *L) {
return g_iofile(L, IO_OUTPUT, "w");
}
/*
** {======================================================
** READ
** =======================================================
*/
static int read_number (lua_State *L, FILE *f) {
lua_Number d;
if (fscanf(f, LUA_NUMBER_SCAN, &d) == 1) {
lua_pushnumber(L, d);
return 1;
}
else return 0; /* read fails */
}
static int test_eof (lua_State *L, FILE *f) {
int c = getc(f);
ungetc(c, f);
lua_pushlstring(L, NULL, 0);
return (c != EOF);
}
static int read_line (lua_State *L, FILE *f) {
luaL_Buffer b;
luaL_buffinit(L, &b);
for (;;) {
size_t l;
char *p = luaL_prepbuffer(&b);
if (fgets(p, LUAL_BUFFERSIZE, f) == NULL) { /* eof? */
luaL_pushresult(&b); /* close buffer */
return (lua_strlen(L, -1) > 0); /* check whether read something */
}
l = strlen(p);
if (p[l-1] != '\n')
luaL_addsize(&b, l);
else {
luaL_addsize(&b, l - 1); /* do not include `eol' */
luaL_pushresult(&b); /* close buffer */
return 1; /* read at least an `eol' */
}
}
}
static int read_chars (lua_State *L, FILE *f, size_t n) {
size_t rlen; /* how much to read */
size_t nr; /* number of chars actually read */
luaL_Buffer b;
luaL_buffinit(L, &b);
rlen = LUAL_BUFFERSIZE; /* try to read that much each time */
do {
char *p = luaL_prepbuffer(&b);
if (rlen > n) rlen = n; /* cannot read more than asked */
nr = fread(p, sizeof(char), rlen, f);
luaL_addsize(&b, nr);
n -= nr; /* still have to read `n' chars */
} while (n > 0 && nr == rlen); /* until end of count or eof */
luaL_pushresult(&b); /* close buffer */
return (n == 0 || lua_strlen(L, -1) > 0);
}
static int g_read (lua_State *L, FILE *f, int first) {
int nargs = lua_gettop(L) - 1;
int success;
int n;
if (nargs == 0) { /* no arguments? */
success = read_line(L, f);
n = first+1; /* to return 1 result */
}
else { /* ensure stack space for all results and for auxlib's buffer */
luaL_check_stack(L, nargs+LUA_MINSTACK, "too many arguments");
success = 1;
for (n = first; nargs-- && success; n++) {
if (lua_type(L, n) == LUA_TNUMBER) {
size_t l = (size_t)lua_tonumber(L, n);
success = (l == 0) ? test_eof(L, f) : read_chars(L, f, l);
}
else {
const char *p = lua_tostring(L, n);
if (!p || p[0] != '*')
return luaL_error(L, "invalid `read' option");
switch (p[1]) {
case 'n': /* number */
success = read_number(L, f);
break;
case 'l': /* line */
success = read_line(L, f);
break;
case 'a': /* file */
read_chars(L, f, ~((size_t)0)); /* read MAX_SIZE_T chars */
success = 1; /* always success */
break;
case 'w': /* word */
return luaL_error(L, "obsolete option `*w'");
default:
return luaL_argerror(L, n, "invalid format");
}
}
}
}
if (!success) {
lua_pop(L, 1); /* remove last result */
lua_pushnil(L); /* push nil instead */
}
return n - first;
}
static int io_read (lua_State *L) {
return g_read(L, getiofile(L, IO_INPUT), 1);
}
static int f_read (lua_State *L) {
return g_read(L, tofile(L, 1), 2);
}
/* }====================================================== */
static int g_write (lua_State *L, FILE *f, int arg) {
int nargs = lua_gettop(L) - 1;
int status = 1;
for (; nargs--; arg++) {
if (lua_type(L, arg) == LUA_TNUMBER) {
/* optimization: could be done exactly as for strings */
status = status &&
fprintf(f, LUA_NUMBER_FMT, lua_tonumber(L, arg)) > 0;
}
else {
size_t l;
const char *s = luaL_check_lstr(L, arg, &l);
status = status && (fwrite(s, sizeof(char), l, f) == l);
}
}
pushresult(L, status);
return 1;
}
static int io_write (lua_State *L) {
return g_write(L, getiofile(L, IO_OUTPUT), 1);
}
static int f_write (lua_State *L) {
return g_write(L, tofile(L, 1), 2);
}
static int f_seek (lua_State *L) {
static const int mode[] = {SEEK_SET, SEEK_CUR, SEEK_END};
static const char *const modenames[] = {"set", "cur", "end", NULL};
FILE *f = tofile(L, 1);
int op = luaL_findstring(luaL_opt_string(L, 2, "cur"), modenames);
long offset = luaL_opt_long(L, 3, 0);
luaL_arg_check(L, op != -1, 2, "invalid mode");
op = fseek(f, offset, mode[op]);
if (op)
return pushresult(L, 0); /* error */
else {
lua_pushnumber(L, ftell(f));
return 1;
}
}
static int io_flush (lua_State *L) {
return pushresult(L, fflush(getiofile(L, IO_OUTPUT)) == 0);
}
static int f_flush (lua_State *L) {
return pushresult(L, fflush(tofile(L, 1)) == 0);
}
static const luaL_reg iolib[] = {
{"input", io_input},
{"output", io_output},
{"close", io_close},
{"flush", io_flush},
{"open", io_open},
{"popen", io_popen},
{"read", io_read},
{"tmpfile", io_tmpfile},
{"write", io_write},
{NULL, NULL}
};
static const luaL_reg flib[] = {
{"flush", f_flush},
{"read", f_read},
{"seek", f_seek},
{"write", f_write},
{"close", io_close},
{NULL, NULL}
};
static void createmeta (lua_State *L) {
lua_pushliteral(L, FILEHANDLE); /* S: FH */
lua_newtable(L); /* S: mt FH */
/* close files when collected */
lua_pushliteral(L, "__gc"); /* S: `gc' mt FH */
lua_pushvalue(L, -2); /* S: mt `gc' mt FH */
lua_pushcclosure(L, io_close, 1); /* S: close `gc' mt FH */
lua_rawset(L, -3); /* S: mt FH */
/* file methods */
lua_pushliteral(L, "__gettable"); /* S: `gettable' mt FH */
lua_pushvalue(L, -2); /* S: mt `gettable' mt FH */
lua_rawset(L, -3); /* S: mt FH */
lua_pushvalue(L, -1); /* S: mt mt FH */
luaL_openlib(L, flib, 1); /* S: mt FH */
/* put new metatable into registry */
lua_rawset(L, LUA_REGISTRYINDEX); /* S: empty */
/* meta table for CLOSEDFILEHANDLE */
lua_pushliteral(L, CLOSEDFILEHANDLE);
lua_newtable(L);
lua_rawset(L, LUA_REGISTRYINDEX);
}
/* }====================================================== */
/*
** {======================================================
** Other O.S. Operations
** =======================================================
*/
static int io_execute (lua_State *L) {
lua_pushnumber(L, system(luaL_check_string(L, 1)));
return 1;
}
static int io_remove (lua_State *L) {
return pushresult(L, remove(luaL_check_string(L, 1)) == 0);
}
static int io_rename (lua_State *L) {
return pushresult(L, rename(luaL_check_string(L, 1),
luaL_check_string(L, 2)) == 0);
}
static int io_tmpname (lua_State *L) {
char buff[L_tmpnam];
if (tmpnam(buff) != buff)
return luaL_error(L, "unable to generate a unique filename");
lua_pushstring(L, buff);
return 1;
}
static int io_getenv (lua_State *L) {
lua_pushstring(L, getenv(luaL_check_string(L, 1))); /* if NULL push nil */
return 1;
}
static int io_clock (lua_State *L) {
lua_pushnumber(L, ((lua_Number)clock())/(lua_Number)CLOCKS_PER_SEC);
return 1;
}
/*
** {======================================================
** Time/Date operations
** { year=%Y, month=%m, day=%d, hour=%H, min=%M, sec=%S,
** wday=%w+1, yday=%j, isdst=? }
** =======================================================
*/
static void setfield (lua_State *L, const char *key, int value) {
lua_pushstring(L, key);
lua_pushnumber(L, value);
lua_rawset(L, -3);
}
static void setboolfield (lua_State *L, const char *key, int value) {
lua_pushstring(L, key);
lua_pushboolean(L, value);
lua_rawset(L, -3);
}
static int getboolfield (lua_State *L, const char *key) {
int res;
lua_pushstring(L, key);
lua_gettable(L, -2);
res = lua_toboolean(L, -1);
lua_pop(L, 1);
return res;
}
static int getfield (lua_State *L, const char *key, int d) {
int res;
lua_pushstring(L, key);
lua_gettable(L, -2);
if (lua_isnumber(L, -1))
res = (int)(lua_tonumber(L, -1));
else {
if (d == -2)
return luaL_error(L, "field `%s' missing in date table", key);
res = d;
}
lua_pop(L, 1);
return res;
}
static int io_date (lua_State *L) {
const char *s = luaL_opt_string(L, 1, "%c");
time_t t = (time_t)(luaL_opt_number(L, 2, -1));
struct tm *stm;
if (t == (time_t)(-1)) /* no time given? */
t = time(NULL); /* use current time */
if (*s == '!') { /* UTC? */
stm = gmtime(&t);
s++; /* skip `!' */
}
else
stm = localtime(&t);
if (stm == NULL) /* invalid date? */
lua_pushnil(L);
else if (strcmp(s, "*t") == 0) {
lua_newtable(L);
setfield(L, "sec", stm->tm_sec);
setfield(L, "min", stm->tm_min);
setfield(L, "hour", stm->tm_hour);
setfield(L, "day", stm->tm_mday);
setfield(L, "month", stm->tm_mon+1);
setfield(L, "year", stm->tm_year+1900);
setfield(L, "wday", stm->tm_wday+1);
setfield(L, "yday", stm->tm_yday+1);
setboolfield(L, "isdst", stm->tm_isdst);
}
else {
char b[256];
if (strftime(b, sizeof(b), s, stm))
lua_pushstring(L, b);
else
return luaL_error(L, "`date' format too long");
}
return 1;
}
static int io_time (lua_State *L) {
if (lua_isnoneornil(L, 1)) /* called without args? */
lua_pushnumber(L, time(NULL)); /* return current time */
else {
time_t t;
struct tm ts;
luaL_check_type(L, 1, LUA_TTABLE);
lua_settop(L, 1); /* make sure table is at the top */
ts.tm_sec = getfield(L, "sec", 0);
ts.tm_min = getfield(L, "min", 0);
ts.tm_hour = getfield(L, "hour", 12);
ts.tm_mday = getfield(L, "day", -2);
ts.tm_mon = getfield(L, "month", -2) - 1;
ts.tm_year = getfield(L, "year", -2) - 1900;
ts.tm_isdst = getboolfield(L, "isdst");
t = mktime(&ts);
if (t == (time_t)(-1))
lua_pushnil(L);
else
lua_pushnumber(L, t);
}
return 1;
}
static int io_difftime (lua_State *L) {
lua_pushnumber(L, difftime((time_t)(luaL_check_number(L, 1)),
(time_t)(luaL_opt_number(L, 2, 0))));
return 1;
}
/* }====================================================== */
static int io_setloc (lua_State *L) {
static const int cat[] = {LC_ALL, LC_COLLATE, LC_CTYPE, LC_MONETARY,
LC_NUMERIC, LC_TIME};
static const char *const catnames[] = {"all", "collate", "ctype", "monetary",
"numeric", "time", NULL};
const char *l = lua_tostring(L, 1);
int op = luaL_findstring(luaL_opt_string(L, 2, "all"), catnames);
luaL_arg_check(L, l || lua_isnoneornil(L, 1), 1, "string expected");
luaL_arg_check(L, op != -1, 2, "invalid option");
lua_pushstring(L, setlocale(cat[op], l));
return 1;
}
static int io_exit (lua_State *L) {
exit(luaL_opt_int(L, 1, EXIT_SUCCESS));
return 0; /* to avoid warnings */
}
static const luaL_reg syslib[] = {
{"clock", io_clock},
{"date", io_date},
{"difftime", io_difftime},
{"execute", io_execute},
{"exit", io_exit},
{"getenv", io_getenv},
{"remove", io_remove},
{"rename", io_rename},
{"setlocale", io_setloc},
{"time", io_time},
{"tmpname", io_tmpname},
{NULL, NULL}
};
/* }====================================================== */
LUALIB_API int lua_iolibopen (lua_State *L) {
createmeta(L);
luaL_opennamedlib(L, LUA_OSLIBNAME, syslib, 0);
lua_pushliteral(L, FILEHANDLE); /* S: FH */
lua_rawget(L, LUA_REGISTRYINDEX); /* S: mt */
lua_pushvalue(L, -1); /* S: mt mt */
luaL_opennamedlib(L, LUA_IOLIBNAME, iolib, 1); /* S: mt */
lua_pushliteral(L, LUA_IOLIBNAME); /* S: `io' mt */
lua_gettable(L, LUA_GLOBALSINDEX); /* S: io mt */
/* put predefined file handles into `io' table */
registerfile(L, stdin, "stdin", IO_INPUT);
registerfile(L, stdout, "stdout", IO_OUTPUT);
registerfile(L, stderr, "stderr", NULL);
lua_pop(L, 2); /* S: empty */
return 0;
}

409
llex.c
View File

@@ -1,409 +0,0 @@
/*
** $Id: llex.c,v 1.107 2002/07/08 18:14:36 roberto Exp roberto $
** Lexical Analyzer
** See Copyright Notice in lua.h
*/
#include <ctype.h>
#include <string.h>
#include "lua.h"
#include "ldo.h"
#include "llex.h"
#include "lobject.h"
#include "lparser.h"
#include "lstate.h"
#include "lstring.h"
#include "lzio.h"
#define next(LS) (LS->current = zgetc(LS->z))
/* ORDER RESERVED */
static const char *const token2string [] = {
"and", "break", "do", "else", "elseif",
"end", "false", "for", "function", "global", "if",
"in", "local", "nil", "not", "or", "repeat",
"return", "then", "true", "until", "while", "*name",
"..", "...", "==", ">=", "<=", "~=",
"*number", "*string", "<eof>"
};
void luaX_init (lua_State *L) {
int i;
for (i=0; i<NUM_RESERVED; i++) {
TString *ts = luaS_new(L, token2string[i]);
lua_assert(strlen(token2string[i])+1 <= TOKEN_LEN);
ts->tsv.marked = cast(unsigned short, RESERVEDMARK+i); /* reserved word */
}
}
#define MAXSRC 80
void luaX_checklimit (LexState *ls, int val, int limit, const char *msg) {
if (val > limit) {
msg = luaO_pushfstring(ls->L, "too many %s (limit=%d)", msg, limit);
luaX_syntaxerror(ls, msg);
}
}
static void luaX_error (LexState *ls, const char *s, const char *token) {
lua_State *L = ls->L;
char buff[MAXSRC];
luaO_chunkid(buff, getstr(ls->source), MAXSRC);
luaO_pushfstring(L, "%s:%d: %s near `%s'\n", buff, ls->linenumber, s, token);
luaD_throw(L, LUA_ERRSYNTAX);
}
void luaX_syntaxerror (LexState *ls, const char *msg) {
const char *lasttoken;
switch (ls->t.token) {
case TK_NAME:
lasttoken = luaO_pushfstring(ls->L, "%s", getstr(ls->t.seminfo.ts));
break;
case TK_STRING:
lasttoken = luaO_pushfstring(ls->L, "\"%s\"", getstr(ls->t.seminfo.ts));
break;
case TK_NUMBER:
lasttoken = luaO_pushfstring(ls->L, "%f", ls->t.seminfo.r);
break;
default:
lasttoken = luaX_token2str(ls, ls->t.token);
break;
}
luaX_error(ls, msg, lasttoken);
}
const char *luaX_token2str (LexState *ls, int token) {
if (token < FIRST_RESERVED) {
lua_assert(token == (char)token);
return luaO_pushfstring(ls->L, "%c", token);
}
else
return token2string[token-FIRST_RESERVED];
}
static void luaX_lexerror (LexState *ls, const char *s, int token) {
if (token == TK_EOS)
luaX_error(ls, s, luaX_token2str(ls, token));
else
luaX_error(ls, s, cast(char *, G(ls->L)->Mbuffer));
}
static void inclinenumber (LexState *LS) {
next(LS); /* skip `\n' */
++LS->linenumber;
luaX_checklimit(LS, LS->linenumber, MAX_INT, "lines in a chunk");
}
void luaX_setinput (lua_State *L, LexState *LS, ZIO *z, TString *source) {
LS->L = L;
LS->lookahead.token = TK_EOS; /* no look-ahead token */
LS->z = z;
LS->fs = NULL;
LS->linenumber = 1;
LS->lastline = 1;
LS->source = source;
next(LS); /* read first char */
if (LS->current == '#') {
do { /* skip first line */
next(LS);
} while (LS->current != '\n' && LS->current != EOZ);
}
}
/*
** =======================================================
** LEXICAL ANALYZER
** =======================================================
*/
/* use Mbuffer to store names, literal strings and numbers */
#define EXTRABUFF 128
#define checkbuffer(L, len) \
if (((len)+10)*sizeof(char) > G(L)->Mbuffsize) \
luaO_openspace(L, (len)+EXTRABUFF, char)
#define save(L, c, l) (cast(char *, G(L)->Mbuffer)[l++] = cast(char, c))
#define save_and_next(L, LS, l) (save(L, LS->current, l), next(LS))
static size_t readname (LexState *LS) {
lua_State *L = LS->L;
size_t l = 0;
checkbuffer(L, l);
do {
checkbuffer(L, l);
save_and_next(L, LS, l);
} while (isalnum(LS->current) || LS->current == '_');
save(L, '\0', l);
return l-1;
}
/* LUA_NUMBER */
static void read_numeral (LexState *LS, int comma, SemInfo *seminfo) {
lua_State *L = LS->L;
size_t l = 0;
checkbuffer(L, l);
if (comma) save(L, '.', l);
while (isdigit(LS->current)) {
checkbuffer(L, l);
save_and_next(L, LS, l);
}
if (LS->current == '.') {
save_and_next(L, LS, l);
if (LS->current == '.') {
save_and_next(L, LS, l);
save(L, '\0', l);
luaX_lexerror(LS,
"ambiguous syntax (decimal point x string concatenation)",
TK_NUMBER);
}
}
while (isdigit(LS->current)) {
checkbuffer(L, l);
save_and_next(L, LS, l);
}
if (LS->current == 'e' || LS->current == 'E') {
save_and_next(L, LS, l); /* read `E' */
if (LS->current == '+' || LS->current == '-')
save_and_next(L, LS, l); /* optional exponent sign */
while (isdigit(LS->current)) {
checkbuffer(L, l);
save_and_next(L, LS, l);
}
}
save(L, '\0', l);
if (!luaO_str2d(cast(char *, G(L)->Mbuffer), &seminfo->r))
luaX_lexerror(LS, "malformed number", TK_NUMBER);
}
static void read_long_string (LexState *LS, SemInfo *seminfo) {
lua_State *L = LS->L;
int cont = 0;
size_t l = 0;
checkbuffer(L, l);
save(L, '[', l); /* save first `[' */
save_and_next(L, LS, l); /* pass the second `[' */
if (LS->current == '\n') /* string starts with a newline? */
inclinenumber(LS); /* skip it */
for (;;) {
checkbuffer(L, l);
switch (LS->current) {
case EOZ:
save(L, '\0', l);
luaX_lexerror(LS, (seminfo) ? "unfinished long string" :
"unfinished long comment", TK_EOS);
break; /* to avoid warnings */
case '[':
save_and_next(L, LS, l);
if (LS->current == '[') {
cont++;
save_and_next(L, LS, l);
}
continue;
case ']':
save_and_next(L, LS, l);
if (LS->current == ']') {
if (cont == 0) goto endloop;
cont--;
save_and_next(L, LS, l);
}
continue;
case '\n':
save(L, '\n', l);
inclinenumber(LS);
if (!seminfo) l = 0; /* reset buffer to avoid wasting space */
continue;
default:
save_and_next(L, LS, l);
}
} endloop:
save_and_next(L, LS, l); /* skip the second `]' */
save(L, '\0', l);
if (seminfo)
seminfo->ts = luaS_newlstr(L, cast(char *, G(L)->Mbuffer)+2, l-5);
}
static void read_string (LexState *LS, int del, SemInfo *seminfo) {
lua_State *L = LS->L;
size_t l = 0;
checkbuffer(L, l);
save_and_next(L, LS, l);
while (LS->current != del) {
checkbuffer(L, l);
switch (LS->current) {
case EOZ:
save(L, '\0', l);
luaX_lexerror(LS, "unfinished string", TK_EOS);
break; /* to avoid warnings */
case '\n':
save(L, '\0', l);
luaX_lexerror(LS, "unfinished string", TK_STRING);
break; /* to avoid warnings */
case '\\':
next(LS); /* do not save the `\' */
switch (LS->current) {
case 'a': save(L, '\a', l); next(LS); break;
case 'b': save(L, '\b', l); next(LS); break;
case 'f': save(L, '\f', l); next(LS); break;
case 'n': save(L, '\n', l); next(LS); break;
case 'r': save(L, '\r', l); next(LS); break;
case 't': save(L, '\t', l); next(LS); break;
case 'v': save(L, '\v', l); next(LS); break;
case '\n': save(L, '\n', l); inclinenumber(LS); break;
case EOZ: break; /* will raise an error next loop */
default: {
if (!isdigit(LS->current))
save_and_next(L, LS, l); /* handles \\, \", \', and \? */
else { /* \xxx */
int c = 0;
int i = 0;
do {
c = 10*c + (LS->current-'0');
next(LS);
} while (++i<3 && isdigit(LS->current));
if (c > UCHAR_MAX) {
save(L, '\0', l);
luaX_lexerror(LS, "escape sequence too large", TK_STRING);
}
save(L, c, l);
}
}
}
break;
default:
save_and_next(L, LS, l);
}
}
save_and_next(L, LS, l); /* skip delimiter */
save(L, '\0', l);
seminfo->ts = luaS_newlstr(L, cast(char *, G(L)->Mbuffer)+1, l-3);
}
int luaX_lex (LexState *LS, SemInfo *seminfo) {
for (;;) {
switch (LS->current) {
case '\n': {
inclinenumber(LS);
continue;
}
case '-': {
next(LS);
if (LS->current != '-') return '-';
/* else is a comment */
next(LS);
if (LS->current == '[' && (next(LS), LS->current == '['))
read_long_string(LS, NULL); /* long comment */
else /* short comment */
while (LS->current != '\n' && LS->current != EOZ)
next(LS);
continue;
}
case '[': {
next(LS);
if (LS->current != '[') return '[';
else {
read_long_string(LS, seminfo);
return TK_STRING;
}
}
case '=': {
next(LS);
if (LS->current != '=') return '=';
else { next(LS); return TK_EQ; }
}
case '<': {
next(LS);
if (LS->current != '=') return '<';
else { next(LS); return TK_LE; }
}
case '>': {
next(LS);
if (LS->current != '=') return '>';
else { next(LS); return TK_GE; }
}
case '~': {
next(LS);
if (LS->current != '=') return '~';
else { next(LS); return TK_NE; }
}
case '"':
case '\'': {
read_string(LS, LS->current, seminfo);
return TK_STRING;
}
case '.': {
next(LS);
if (LS->current == '.') {
next(LS);
if (LS->current == '.') {
next(LS);
return TK_DOTS; /* ... */
}
else return TK_CONCAT; /* .. */
}
else if (!isdigit(LS->current)) return '.';
else {
read_numeral(LS, 1, seminfo);
return TK_NUMBER;
}
}
case EOZ: {
return TK_EOS;
}
default: {
if (isspace(LS->current)) {
next(LS);
continue;
}
else if (isdigit(LS->current)) {
read_numeral(LS, 0, seminfo);
return TK_NUMBER;
}
else if (isalpha(LS->current) || LS->current == '_') {
/* identifier or reserved word */
size_t l = readname(LS);
TString *ts = luaS_newlstr(LS->L, cast(char *, G(LS->L)->Mbuffer), l);
if (ts->tsv.marked >= RESERVEDMARK) /* reserved word? */
return ts->tsv.marked-RESERVEDMARK+FIRST_RESERVED;
seminfo->ts = ts;
return TK_NAME;
}
else {
int c = LS->current;
if (iscntrl(c))
luaX_error(LS, "invalid control char",
luaO_pushfstring(LS->L, "char(%d)", c));
next(LS);
return c; /* single-char tokens (+ - / ...) */
}
}
}
}
}
#undef next

72
llex.h
View File

@@ -1,72 +0,0 @@
/*
** $Id: llex.h,v 1.42 2002/02/08 22:42:41 roberto Exp roberto $
** Lexical Analyzer
** See Copyright Notice in lua.h
*/
#ifndef llex_h
#define llex_h
#include "lobject.h"
#include "lzio.h"
#define FIRST_RESERVED 257
/* maximum length of a reserved word */
#define TOKEN_LEN (sizeof("function")/sizeof(char))
/*
* WARNING: if you change the order of this enumeration,
* grep "ORDER RESERVED"
*/
enum RESERVED {
/* terminal symbols denoted by reserved words */
TK_AND = FIRST_RESERVED, TK_BREAK,
TK_DO, TK_ELSE, TK_ELSEIF, TK_END, TK_FALSE, TK_FOR, TK_FUNCTION,
TK_GLOBAL, TK_IF, TK_IN, TK_LOCAL, TK_NIL, TK_NOT, TK_OR, TK_REPEAT,
TK_RETURN, TK_THEN, TK_TRUE, TK_UNTIL, TK_WHILE,
/* other terminal symbols */
TK_NAME, TK_CONCAT, TK_DOTS, TK_EQ, TK_GE, TK_LE, TK_NE, TK_NUMBER,
TK_STRING, TK_EOS
};
/* number of reserved words */
#define NUM_RESERVED (cast(int, TK_WHILE-FIRST_RESERVED+1))
typedef union {
lua_Number r;
TString *ts;
} SemInfo; /* semantics information */
typedef struct Token {
int token;
SemInfo seminfo;
} Token;
typedef struct LexState {
int current; /* current character (charint) */
int linenumber; /* input line counter */
int lastline; /* line of last token `consumed' */
Token t; /* current token */
Token lookahead; /* look ahead token */
struct FuncState *fs; /* `FuncState' is private to the parser */
struct lua_State *L;
struct zio *z; /* input stream */
TString *source; /* current source name */
} LexState;
void luaX_init (lua_State *L);
void luaX_setinput (lua_State *L, LexState *LS, ZIO *z, TString *source);
int luaX_lex (LexState *LS, SemInfo *seminfo);
void luaX_checklimit (LexState *ls, int val, int limit, const char *msg);
void luaX_syntaxerror (LexState *ls, const char *s);
const char *luaX_token2str (LexState *ls, int token);
#endif

153
llimits.h
View File

@@ -1,153 +0,0 @@
/*
** $Id: llimits.h,v 1.44 2002/06/13 13:45:31 roberto Exp roberto $
** Limits, basic types, and some other `installation-dependent' definitions
** See Copyright Notice in lua.h
*/
#ifndef llimits_h
#define llimits_h
#include <limits.h>
#include <stddef.h>
#include "lua.h"
/*
** try to find number of bits in an integer
*/
#ifndef BITS_INT
/* avoid overflows in comparison */
#if INT_MAX-20 < 32760
#define BITS_INT 16
#else
#if INT_MAX > 2147483640L
/* machine has at least 32 bits */
#define BITS_INT 32
#else
#error "you must define BITS_INT with number of bits in an integer"
#endif
#endif
#endif
/*
** the following types define integer types for values that may not
** fit in a `small int' (16 bits), but may waste space in a
** `large long' (64 bits). The current definitions should work in
** any machine, but may not be optimal.
*/
/* an unsigned integer to hold hash values */
typedef unsigned int lu_hash;
/* its signed equivalent */
typedef int ls_hash;
/* an unsigned integer big enough to count the total memory used by Lua; */
/* it should be at least as large as size_t */
typedef unsigned long lu_mem;
/* an integer big enough to count the number of strings in use */
typedef long ls_nstr;
/* an integer big enough to count the number of steps when calling a
** `count' hook */
typedef long ls_count;
/* chars used as small naturals (so that `char' is reserved for characteres) */
typedef unsigned char lu_byte;
#define MAX_SIZET ((size_t)(~(size_t)0)-2)
#define MAX_INT (INT_MAX-2) /* maximum value of an int (-2 for safety) */
/*
** conversion of pointer to integer
** this is for hashing only; there is no problem if the integer
** cannot hold the whole pointer value
*/
#define IntPoint(p) ((lu_hash)(p))
/* type to ensure maximum alignment */
#ifndef LUSER_ALIGNMENT_T
#define LUSER_ALIGNMENT_T double
#endif
union L_Umaxalign { LUSER_ALIGNMENT_T u; void *s; long l; };
#ifndef lua_assert
#define lua_assert(c) /* empty */
#endif
#ifndef check_exp
#define check_exp(c,e) (e)
#endif
#ifndef UNUSED
#define UNUSED(x) ((void)(x)) /* to avoid warnings */
#endif
#ifndef cast
#define cast(t, exp) ((t)(exp))
#endif
/*
** type for virtual-machine instructions
** must be an unsigned with (at least) 4 bytes (see details in lopcodes.h)
*/
typedef unsigned long Instruction;
/* maximum depth for calls */
#ifndef LUA_MAXCALLS
#define LUA_MAXCALLS 4096
#endif
/* maximum size for the C stack */
#ifndef LUA_MAXCSTACK
#define LUA_MAXCSTACK 2048
#endif
/* maximum stack for a Lua function */
#define MAXSTACK 250
/* maximum number of variables declared in a function */
#ifndef MAXVARS
#define MAXVARS 200 /* arbitrary limit (<MAXSTACK) */
#endif
/* maximum number of upvalues per function */
#ifndef MAXUPVALUES
#define MAXUPVALUES 32
#endif
/* maximum number of parameters in a function */
#ifndef MAXPARAMS
#define MAXPARAMS 100 /* arbitrary limit (<MAXLOCALS) */
#endif
/* minimum size for the string table (must be power of 2) */
#ifndef MINSTRTABSIZE
#define MINSTRTABSIZE 32
#endif
#endif

View File

@@ -1,247 +0,0 @@
/*
** $Id: lmathlib.c,v 1.50 2002/08/14 20:07:43 roberto Exp roberto $
** Standard mathematical library
** See Copyright Notice in lua.h
*/
#include <stdlib.h>
#include <math.h>
#include "lua.h"
#include "lauxlib.h"
#include "lualib.h"
#undef PI
#define PI (3.14159265358979323846)
#define RADIANS_PER_DEGREE (PI/180.0)
/*
** If you want Lua to operate in degrees (instead of radians),
** define USE_DEGREES
*/
#ifdef USE_DEGREES
#define FROMRAD(a) ((a)/RADIANS_PER_DEGREE)
#define TORAD(a) ((a)*RADIANS_PER_DEGREE)
#else
#define FROMRAD(a) (a)
#define TORAD(a) (a)
#endif
static int math_abs (lua_State *L) {
lua_pushnumber(L, fabs(luaL_check_number(L, 1)));
return 1;
}
static int math_sin (lua_State *L) {
lua_pushnumber(L, sin(TORAD(luaL_check_number(L, 1))));
return 1;
}
static int math_cos (lua_State *L) {
lua_pushnumber(L, cos(TORAD(luaL_check_number(L, 1))));
return 1;
}
static int math_tan (lua_State *L) {
lua_pushnumber(L, tan(TORAD(luaL_check_number(L, 1))));
return 1;
}
static int math_asin (lua_State *L) {
lua_pushnumber(L, FROMRAD(asin(luaL_check_number(L, 1))));
return 1;
}
static int math_acos (lua_State *L) {
lua_pushnumber(L, FROMRAD(acos(luaL_check_number(L, 1))));
return 1;
}
static int math_atan (lua_State *L) {
lua_pushnumber(L, FROMRAD(atan(luaL_check_number(L, 1))));
return 1;
}
static int math_atan2 (lua_State *L) {
lua_pushnumber(L, FROMRAD(atan2(luaL_check_number(L, 1), luaL_check_number(L, 2))));
return 1;
}
static int math_ceil (lua_State *L) {
lua_pushnumber(L, ceil(luaL_check_number(L, 1)));
return 1;
}
static int math_floor (lua_State *L) {
lua_pushnumber(L, floor(luaL_check_number(L, 1)));
return 1;
}
static int math_mod (lua_State *L) {
lua_pushnumber(L, fmod(luaL_check_number(L, 1), luaL_check_number(L, 2)));
return 1;
}
static int math_sqrt (lua_State *L) {
lua_pushnumber(L, sqrt(luaL_check_number(L, 1)));
return 1;
}
static int math_pow (lua_State *L) {
lua_pushnumber(L, pow(luaL_check_number(L, 1), luaL_check_number(L, 2)));
return 1;
}
static int math_log (lua_State *L) {
lua_pushnumber(L, log(luaL_check_number(L, 1)));
return 1;
}
static int math_log10 (lua_State *L) {
lua_pushnumber(L, log10(luaL_check_number(L, 1)));
return 1;
}
static int math_exp (lua_State *L) {
lua_pushnumber(L, exp(luaL_check_number(L, 1)));
return 1;
}
static int math_deg (lua_State *L) {
lua_pushnumber(L, luaL_check_number(L, 1)/RADIANS_PER_DEGREE);
return 1;
}
static int math_rad (lua_State *L) {
lua_pushnumber(L, luaL_check_number(L, 1)*RADIANS_PER_DEGREE);
return 1;
}
static int math_frexp (lua_State *L) {
int e;
lua_pushnumber(L, frexp(luaL_check_number(L, 1), &e));
lua_pushnumber(L, e);
return 2;
}
static int math_ldexp (lua_State *L) {
lua_pushnumber(L, ldexp(luaL_check_number(L, 1), luaL_check_int(L, 2)));
return 1;
}
static int math_min (lua_State *L) {
int n = lua_gettop(L); /* number of arguments */
lua_Number dmin = luaL_check_number(L, 1);
int i;
for (i=2; i<=n; i++) {
lua_Number d = luaL_check_number(L, i);
if (d < dmin)
dmin = d;
}
lua_pushnumber(L, dmin);
return 1;
}
static int math_max (lua_State *L) {
int n = lua_gettop(L); /* number of arguments */
lua_Number dmax = luaL_check_number(L, 1);
int i;
for (i=2; i<=n; i++) {
lua_Number d = luaL_check_number(L, i);
if (d > dmax)
dmax = d;
}
lua_pushnumber(L, dmax);
return 1;
}
static int math_random (lua_State *L) {
/* the `%' avoids the (rare) case of r==1, and is needed also because on
some systems (SunOS!) `rand()' may return a value larger than RAND_MAX */
lua_Number r = (lua_Number)(rand()%RAND_MAX) / (lua_Number)RAND_MAX;
switch (lua_gettop(L)) { /* check number of arguments */
case 0: { /* no arguments */
lua_pushnumber(L, r); /* Number between 0 and 1 */
break;
}
case 1: { /* only upper limit */
int u = luaL_check_int(L, 1);
luaL_arg_check(L, 1<=u, 1, "interval is empty");
lua_pushnumber(L, (int)floor(r*u)+1); /* int between 1 and `u' */
break;
}
case 2: { /* lower and upper limits */
int l = luaL_check_int(L, 1);
int u = luaL_check_int(L, 2);
luaL_arg_check(L, l<=u, 2, "interval is empty");
lua_pushnumber(L, (int)floor(r*(u-l+1))+l); /* int between `l' and `u' */
break;
}
default: return luaL_error(L, "wrong number of arguments");
}
return 1;
}
static int math_randomseed (lua_State *L) {
srand(luaL_check_int(L, 1));
return 0;
}
static const luaL_reg mathlib[] = {
{"abs", math_abs},
{"sin", math_sin},
{"cos", math_cos},
{"tan", math_tan},
{"asin", math_asin},
{"acos", math_acos},
{"atan", math_atan},
{"atan2", math_atan2},
{"ceil", math_ceil},
{"floor", math_floor},
{"mod", math_mod},
{"frexp", math_frexp},
{"ldexp", math_ldexp},
{"sqrt", math_sqrt},
{"min", math_min},
{"max", math_max},
{"log", math_log},
{"log10", math_log10},
{"exp", math_exp},
{"deg", math_deg},
{"pow", math_pow},
{"rad", math_rad},
{"random", math_random},
{"randomseed", math_randomseed},
{NULL, NULL}
};
/*
** Open math library
*/
LUALIB_API int lua_mathlibopen (lua_State *L) {
lua_pushliteral(L, LUA_MATHLIBNAME);
lua_newtable(L);
luaL_openlib(L, mathlib, 0);
lua_pushliteral(L, "pi");
lua_pushnumber(L, PI);
lua_settable(L, -3);
lua_settable(L, LUA_GLOBALSINDEX);
lua_pushliteral(L, "__pow");
lua_pushcfunction(L, math_pow);
lua_settable(L, LUA_REGISTRYINDEX);
return 0;
}

79
lmem.c
View File

@@ -1,79 +0,0 @@
/*
** $Id: lmem.c,v 1.56 2002/06/11 16:23:47 roberto Exp roberto $
** Interface to Memory Manager
** See Copyright Notice in lua.h
*/
#include <stdlib.h>
#include "lua.h"
#include "ldebug.h"
#include "ldo.h"
#include "lmem.h"
#include "lobject.h"
#include "lstate.h"
/*
** definition for realloc function. It must assure that
** l_realloc(block, x, 0) frees the block, and l_realloc(NULL, 0, x)
** allocates a new block (ANSI C assures that).
** (`os' is the old block size; some allocators may use that.)
*/
#ifndef l_realloc
#define l_realloc(b,os,s) realloc(b,s)
#endif
#define MINSIZEARRAY 4
void *luaM_growaux (lua_State *L, void *block, int *size, int size_elems,
int limit, const char *errormsg) {
void *newblock;
int newsize = (*size)*2;
if (newsize < MINSIZEARRAY)
newsize = MINSIZEARRAY; /* minimum size */
else if (*size >= limit/2) { /* cannot double it? */
if (*size < limit - MINSIZEARRAY) /* try something smaller... */
newsize = limit; /* still have at least MINSIZEARRAY free places */
else luaG_runerror(L, errormsg);
}
newblock = luaM_realloc(L, block,
cast(lu_mem, *size)*cast(lu_mem, size_elems),
cast(lu_mem, newsize)*cast(lu_mem, size_elems));
*size = newsize; /* update only when everything else is OK */
return newblock;
}
/*
** generic allocation routine.
*/
void *luaM_realloc (lua_State *L, void *block, lu_mem oldsize, lu_mem size) {
if (size == 0) {
if (block != NULL) {
l_realloc(block, oldsize, size);
block = NULL;
}
}
else if (size >= MAX_SIZET)
luaG_runerror(L, "memory allocation error: block too big");
else {
block = l_realloc(block, oldsize, size);
if (block == NULL) {
if (L)
luaD_throw(L, LUA_ERRMEM);
else return NULL; /* error before creating state! */
}
}
if (L && G(L)) {
G(L)->nblocks -= oldsize;
G(L)->nblocks += size;
}
return block;
}

44
lmem.h
View File

@@ -1,44 +0,0 @@
/*
** $Id: lmem.h,v 1.25 2001/11/28 20:13:13 roberto Exp roberto $
** Interface to Memory Manager
** See Copyright Notice in lua.h
*/
#ifndef lmem_h
#define lmem_h
#include <stddef.h>
#include "llimits.h"
#include "lua.h"
#define MEMERRMSG "not enough memory"
void *luaM_realloc (lua_State *L, void *oldblock, lu_mem oldsize, lu_mem size);
void *luaM_growaux (lua_State *L, void *block, int *size, int size_elem,
int limit, const char *errormsg);
#define luaM_free(L, b, s) luaM_realloc(L, (b), (s), 0)
#define luaM_freelem(L, b) luaM_realloc(L, (b), sizeof(*(b)), 0)
#define luaM_freearray(L, b, n, t) luaM_realloc(L, (b), \
cast(lu_mem, n)*cast(lu_mem, sizeof(t)), 0)
#define luaM_malloc(L, t) luaM_realloc(L, NULL, 0, (t))
#define luaM_new(L, t) cast(t *, luaM_malloc(L, sizeof(t)))
#define luaM_newvector(L, n,t) cast(t *, luaM_malloc(L, \
cast(lu_mem, n)*cast(lu_mem, sizeof(t))))
#define luaM_growvector(L,v,nelems,size,t,limit,e) \
if (((nelems)+1) > (size)) \
((v)=cast(t *, luaM_growaux(L,v,&(size),sizeof(t),limit,e)))
#define luaM_reallocvector(L, v,oldn,n,t) \
((v)=cast(t *, luaM_realloc(L, v,cast(lu_mem, oldn)*cast(lu_mem, sizeof(t)), \
cast(lu_mem, n)*cast(lu_mem, sizeof(t)))))
#endif

195
lobject.c
View File

@@ -1,195 +0,0 @@
/*
** $Id: lobject.c,v 1.85 2002/07/17 16:25:13 roberto Exp roberto $
** Some generic functions over Lua objects
** See Copyright Notice in lua.h
*/
#include <ctype.h>
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
#include "lua.h"
#include "ldo.h"
#include "lmem.h"
#include "lobject.h"
#include "lstate.h"
#include "lstring.h"
#include "lvm.h"
/* function to convert a string to a lua_Number */
#ifndef lua_str2number
#define lua_str2number(s,p) strtod((s), (p))
#endif
const TObject luaO_nilobject = {LUA_TNIL, {NULL}};
int luaO_log2 (unsigned int x) {
static const lu_byte log_8[255] = {
0,
1,1,
2,2,2,2,
3,3,3,3,3,3,3,3,
4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,
5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,
6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7
};
if (x >= 0x00010000) {
if (x >= 0x01000000) return log_8[((x>>24) & 0xff) - 1]+24;
else return log_8[((x>>16) & 0xff) - 1]+16;
}
else {
if (x >= 0x00000100) return log_8[((x>>8) & 0xff) - 1]+8;
else if (x) return log_8[(x & 0xff) - 1];
return -1; /* special `log' for 0 */
}
}
int luaO_rawequalObj (const TObject *t1, const TObject *t2) {
if (ttype(t1) != ttype(t2)) return 0;
switch (ttype(t1)) {
case LUA_TNUMBER:
return nvalue(t1) == nvalue(t2);
case LUA_TNIL:
return 1;
case LUA_TSTRING:
return tsvalue(t1) == tsvalue(t2);
case LUA_TBOOLEAN:
return bvalue(t1) == bvalue(t2); /* boolean true must be 1 !! */
case LUA_TLIGHTUSERDATA:
return pvalue(t1) == pvalue(t2);
case LUA_TUSERDATA:
return uvalue(t1) == uvalue(t2);
case LUA_TTABLE:
return hvalue(t1) == hvalue(t2);
case LUA_TFUNCTION:
return clvalue(t1) == clvalue(t2);
}
lua_assert(0);
return 0; /* to avoid warnings */
}
void *luaO_openspaceaux (lua_State *L, size_t n) {
if (n > G(L)->Mbuffsize) {
G(L)->Mbuffer = luaM_realloc(L, G(L)->Mbuffer, G(L)->Mbuffsize, n);
G(L)->Mbuffsize = n;
}
return G(L)->Mbuffer;
}
int luaO_str2d (const char *s, lua_Number *result) {
char *endptr;
lua_Number res = lua_str2number(s, &endptr);
if (endptr == s) return 0; /* no conversion */
while (isspace((unsigned char)(*endptr))) endptr++;
if (*endptr != '\0') return 0; /* invalid trailing characters? */
*result = res;
return 1;
}
static void pushstr (lua_State *L, const char *str) {
setsvalue(L->top, luaS_new(L, str));
incr_top(L);
}
/* this function handles only `%d', `%c', %f, and `%s' formats */
const char *luaO_pushvfstring (lua_State *L, const char *fmt, va_list argp) {
int n = 1;
pushstr(L, "");
for (;;) {
const char *e = strchr(fmt, '%');
if (e == NULL) break;
setsvalue(L->top, luaS_newlstr(L, fmt, e-fmt));
incr_top(L);
switch (*(e+1)) {
case 's':
pushstr(L, va_arg(argp, char *));
break;
case 'c': {
char buff[2];
buff[0] = cast(char, va_arg(argp, int));
buff[1] = '\0';
pushstr(L, buff);
break;
}
case 'd':
setnvalue(L->top, va_arg(argp, int));
incr_top(L);
break;
case 'f':
setnvalue(L->top, va_arg(argp, lua_Number));
incr_top(L);
break;
case '%':
pushstr(L, "%");
break;
default: lua_assert(0);
}
n += 2;
fmt = e+2;
}
pushstr(L, fmt);
luaV_concat(L, n+1, L->top - L->ci->base - 1);
L->top -= n;
return svalue(L->top - 1);
}
const char *luaO_pushfstring (lua_State *L, const char *fmt, ...) {
const char *msg;
va_list argp;
va_start(argp, fmt);
msg = luaO_pushvfstring(L, fmt, argp);
va_end(argp);
return msg;
}
void luaO_chunkid (char *out, const char *source, int bufflen) {
if (*source == '=') {
strncpy(out, source+1, bufflen); /* remove first char */
out[bufflen-1] = '\0'; /* ensures null termination */
}
else { /* out = "source", or "...source" */
if (*source == '@') {
int l;
source++; /* skip the `@' */
bufflen -= sizeof(" `...' ");
l = strlen(source);
strcpy(out, "");
if (l>bufflen) {
source += (l-bufflen); /* get last part of file name */
strcat(out, "...");
}
strcat(out, source);
}
else { /* out = [string "string"] */
int len = strcspn(source, "\n"); /* stop at first newline */
bufflen -= sizeof(" [string \"...\"] ");
if (len > bufflen) len = bufflen;
strcpy(out, "[string \"");
if (source[len] != '\0') { /* must truncate? */
strncat(out, source, len);
strcat(out, "...");
}
else
strcat(out, source);
strcat(out, "\"]");
}
}
}

263
lobject.h
View File

@@ -1,263 +0,0 @@
/*
** $Id: lobject.h,v 1.141 2002/08/05 14:08:02 roberto Exp roberto $
** Type definitions for Lua objects
** See Copyright Notice in lua.h
*/
#ifndef lobject_h
#define lobject_h
#include "llimits.h"
#include "lua.h"
/* tags for values visible from Lua */
#define NUM_TAGS LUA_TFUNCTION
typedef union {
void *p;
union TString *ts;
union Udata *u;
union Closure *cl;
struct Table *h;
lua_Number n;
int b;
} Value;
typedef struct lua_TObject {
int tt;
Value value;
} TObject;
/* Macros to test type */
#define ttisnil(o) (ttype(o) == LUA_TNIL)
#define ttisnumber(o) (ttype(o) == LUA_TNUMBER)
#define ttisstring(o) (ttype(o) == LUA_TSTRING)
#define ttistable(o) (ttype(o) == LUA_TTABLE)
#define ttisfunction(o) (ttype(o) == LUA_TFUNCTION)
#define ttisboolean(o) (ttype(o) == LUA_TBOOLEAN)
#define ttisuserdata(o) (ttype(o) == LUA_TUSERDATA)
#define ttislightuserdata(o) (ttype(o) == LUA_TLIGHTUSERDATA)
/* Macros to access values */
#define ttype(o) ((o)->tt)
#define pvalue(o) check_exp(ttislightuserdata(o), (o)->value.p)
#define nvalue(o) check_exp(ttisnumber(o), (o)->value.n)
#define tsvalue(o) check_exp(ttisstring(o), (o)->value.ts)
#define uvalue(o) check_exp(ttisuserdata(o), (o)->value.u)
#define clvalue(o) check_exp(ttisfunction(o), (o)->value.cl)
#define hvalue(o) check_exp(ttistable(o), (o)->value.h)
#define bvalue(o) check_exp(ttisboolean(o), (o)->value.b)
#define l_isfalse(o) (ttisnil(o) || (ttisboolean(o) && bvalue(o) == 0))
/* Macros to set values */
#define setnvalue(obj,x) \
{ TObject *i_o=(obj); i_o->tt=LUA_TNUMBER; i_o->value.n=(x); }
#define chgnvalue(obj,x) \
check_exp(ttype(obj)==LUA_TNUMBER, (obj)->value.n=(x))
#define setpvalue(obj,x) \
{ TObject *i_o=(obj); i_o->tt=LUA_TLIGHTUSERDATA; i_o->value.p=(x); }
#define setbvalue(obj,x) \
{ TObject *i_o=(obj); i_o->tt=LUA_TBOOLEAN; i_o->value.b=(x); }
#define setsvalue(obj,x) \
{ TObject *i_o=(obj); i_o->tt=LUA_TSTRING; i_o->value.ts=(x); }
#define setuvalue(obj,x) \
{ TObject *i_o=(obj); i_o->tt=LUA_TUSERDATA; i_o->value.u=(x); }
#define setclvalue(obj,x) \
{ TObject *i_o=(obj); i_o->tt=LUA_TFUNCTION; i_o->value.cl=(x); }
#define sethvalue(obj,x) \
{ TObject *i_o=(obj); i_o->tt=LUA_TTABLE; i_o->value.h=(x); }
#define setnilvalue(obj) ((obj)->tt=LUA_TNIL)
#define setobj(obj1,obj2) \
{ const TObject *o2=(obj2); TObject *o1=(obj1); \
o1->tt=o2->tt; o1->value = o2->value; }
#define setttype(obj, tt) (ttype(obj) = (tt))
typedef TObject *StkId; /* index to stack elements */
/*
** String headers for string table
*/
typedef union TString {
union L_Umaxalign dummy; /* ensures maximum alignment for strings */
struct {
lu_hash hash;
size_t len;
int marked;
union TString *nexthash; /* chain for hash table */
} tsv;
} TString;
#define getstr(ts) cast(const char *, (ts) + 1)
#define svalue(o) getstr(tsvalue(o))
typedef union Udata {
union L_Umaxalign dummy; /* ensures maximum alignment for `local' udata */
struct {
struct Table *metatable;
union Udata *next; /* chain for list of all udata */
size_t len; /* least 2 bits reserved for gc mark */
} uv;
} Udata;
/*
** Function Prototypes
*/
typedef struct Proto {
TObject *k; /* constants used by the function */
Instruction *code;
struct Proto **p; /* functions defined inside the function */
struct Proto *next;
int *lineinfo; /* map from opcodes to source lines */
struct LocVar *locvars; /* information about local variables */
TString *source;
int sizek; /* size of `k' */
int sizecode;
int sizep; /* size of `p' */
int sizelocvars;
int lineDefined;
lu_byte nupvalues;
lu_byte numparams;
lu_byte is_vararg;
lu_byte maxstacksize;
lu_byte marked;
} Proto;
typedef struct LocVar {
TString *varname;
int startpc; /* first point where variable is active */
int endpc; /* first point where variable is dead */
} LocVar;
/*
** Upvalues
*/
typedef struct UpVal {
TObject *v; /* points to stack or to its own value */
struct UpVal *next;
TObject value; /* the value (when closed) */
} UpVal;
/*
** Closures
*/
typedef struct CClosure {
lu_byte isC; /* 0 for Lua functions, 1 for C functions */
lu_byte nupvalues;
lu_byte marked;
union Closure *next;
lua_CFunction f;
TObject upvalue[1];
} CClosure;
typedef struct LClosure {
lu_byte isC;
lu_byte nupvalues;
lu_byte marked;
union Closure *next; /* first four fields must be equal to CClosure!! */
struct Proto *p;
TObject g; /* global table for this closure */
UpVal *upvals[1];
} LClosure;
typedef union Closure {
CClosure c;
LClosure l;
} Closure;
#define iscfunction(o) (ttype(o) == LUA_TFUNCTION && clvalue(o)->c.isC)
#define isLfunction(o) (ttype(o) == LUA_TFUNCTION && !clvalue(o)->c.isC)
/*
** Tables
*/
typedef struct Node {
TObject i_key;
TObject i_val;
struct Node *next; /* for chaining */
} Node;
typedef struct Table {
struct Table *metatable;
TObject *array; /* array part */
Node *node;
Node *firstfree; /* this position is free; all positions after it are full */
struct Table *next;
struct Table *mark; /* marked tables (point to itself when not marked) */
int sizearray; /* size of `array' array */
lu_byte flags; /* 1<<p means tagmethod(p) is not present */
lu_byte lsizenode; /* log2 of size of `node' array */
lu_byte mode;
} Table;
/* bit masks for `mode' */
#define WEAKKEY 1
#define WEAKVALUE 2
/*
** `module' operation for hashing (size is always a power of 2)
*/
#define lmod(s,size) \
check_exp((size&(size-1))==0, (cast(int, (s) & ((size)-1))))
#define twoto(x) (1<<(x))
#define sizenode(t) (twoto((t)->lsizenode))
#define sizearray(t) ((t)->sizearray)
extern const TObject luaO_nilobject;
int luaO_log2 (unsigned int x);
#define luaO_openspace(L,n,t) cast(t *, luaO_openspaceaux(L,(n)*sizeof(t)))
void *luaO_openspaceaux (lua_State *L, size_t n);
int luaO_rawequalObj (const TObject *t1, const TObject *t2);
int luaO_str2d (const char *s, lua_Number *result);
const char *luaO_pushvfstring (lua_State *L, const char *fmt, va_list argp);
const char *luaO_pushfstring (lua_State *L, const char *fmt, ...);
void luaO_chunkid (char *out, const char *source, int len);
#endif

View File

@@ -1,104 +0,0 @@
/*
** $Id: lopcodes.c,v 1.19 2002/05/13 13:09:00 roberto Exp roberto $
** extracted automatically from lopcodes.h by mkprint.lua
** DO NOT EDIT
** See Copyright Notice in lua.h
*/
#include "lua.h"
#include "lobject.h"
#include "lopcodes.h"
#ifdef LUA_OPNAMES
const char *const luaP_opnames[] = {
"MOVE",
"LOADK",
"LOADBOOL",
"LOADNIL",
"GETUPVAL",
"GETGLOBAL",
"GETTABLE",
"SETGLOBAL",
"SETUPVAL",
"SETTABLE",
"NEWTABLE",
"SELF",
"ADD",
"SUB",
"MUL",
"DIV",
"POW",
"UNM",
"NOT",
"CONCAT",
"JMP",
"EQ",
"LT",
"LE",
"GT",
"GE",
"TEST",
"CALL",
"TAILCALL",
"RETURN",
"FORLOOP",
"TFORLOOP",
"TFORPREP",
"SETLIST",
"SETLISTO",
"CLOSE",
"CLOSURE"
};
#endif
#define opmode(t,x,b,c,sa,k,m) (((t)<<OpModeT) | \
((b)<<OpModeBreg) | ((c)<<OpModeCreg) | \
((sa)<<OpModesetA) | ((k)<<OpModeK) | (m))
const lu_byte luaP_opmodes[NUM_OPCODES] = {
/* T _ B C sA K mode opcode */
opmode(0,0,1,0, 1,0,iABC) /* OP_MOVE */
,opmode(0,0,0,0, 1,1,iABx) /* OP_LOADK */
,opmode(0,0,0,0, 1,0,iABC) /* OP_LOADBOOL */
,opmode(0,0,1,0, 1,0,iABC) /* OP_LOADNIL */
,opmode(0,0,0,0, 1,0,iABC) /* OP_GETUPVAL */
,opmode(0,0,0,0, 1,1,iABx) /* OP_GETGLOBAL */
,opmode(0,0,1,1, 1,0,iABC) /* OP_GETTABLE */
,opmode(0,0,0,0, 0,1,iABx) /* OP_SETGLOBAL */
,opmode(0,0,0,0, 0,0,iABC) /* OP_SETUPVAL */
,opmode(0,0,1,1, 0,0,iABC) /* OP_SETTABLE */
,opmode(0,0,0,0, 1,0,iABC) /* OP_NEWTABLE */
,opmode(0,0,1,1, 1,0,iABC) /* OP_SELF */
,opmode(0,0,1,1, 1,0,iABC) /* OP_ADD */
,opmode(0,0,1,1, 1,0,iABC) /* OP_SUB */
,opmode(0,0,1,1, 1,0,iABC) /* OP_MUL */
,opmode(0,0,1,1, 1,0,iABC) /* OP_DIV */
,opmode(0,0,1,1, 1,0,iABC) /* OP_POW */
,opmode(0,0,1,0, 1,0,iABC) /* OP_UNM */
,opmode(0,0,1,0, 1,0,iABC) /* OP_NOT */
,opmode(0,0,1,1, 1,0,iABC) /* OP_CONCAT */
,opmode(0,0,0,0, 0,0,iAsBx) /* OP_JMP */
,opmode(1,0,0,1, 0,0,iABC) /* OP_EQ */
,opmode(1,0,0,1, 0,0,iABC) /* OP_LT */
,opmode(1,0,0,1, 0,0,iABC) /* OP_LE */
,opmode(1,0,0,1, 0,0,iABC) /* OP_GT */
,opmode(1,0,0,1, 0,0,iABC) /* OP_GE */
,opmode(1,0,0,1, 1,0,iABC) /* OP_TEST */
,opmode(0,0,0,0, 0,0,iABC) /* OP_CALL */
,opmode(0,0,0,0, 0,0,iABC) /* OP_TAILCALL */
,opmode(0,0,0,0, 0,0,iABC) /* OP_RETURN */
,opmode(0,0,0,0, 0,0,iAsBx) /* OP_FORLOOP */
,opmode(1,0,0,0, 0,0,iABC) /* OP_TFORLOOP */
,opmode(0,0,0,0, 0,0,iAsBx) /* OP_TFORPREP */
,opmode(0,0,0,0, 0,0,iABx) /* OP_SETLIST */
,opmode(0,0,0,0, 0,0,iABx) /* OP_SETLISTO */
,opmode(0,0,0,0, 0,0,iABC) /* OP_CLOSE */
,opmode(0,0,0,0, 1,0,iABx) /* OP_CLOSURE */
};

View File

@@ -1,233 +0,0 @@
/*
** $Id: lopcodes.h,v 1.99 2002/06/12 14:51:31 roberto Exp $
** Opcodes for Lua virtual machine
** See Copyright Notice in lua.h
*/
#ifndef lopcodes_h
#define lopcodes_h
#include "llimits.h"
/*===========================================================================
We assume that instructions are unsigned numbers.
All instructions have an opcode in the first 6 bits.
Instructions can have the following fields:
`A' : 8 bits (25-32)
`B' : 8 bits (17-24)
`C' : 10 bits (7-16)
`Bx' : 18 bits (`B' and `C' together)
`sBx' : signed Bx
A signed argument is represented in excess K; that is, the number
value is the unsigned value minus K. K is exactly the maximum value
for that argument (so that -max is represented by 0, and +max is
represented by 2*max), which is half the maximum for the corresponding
unsigned argument.
===========================================================================*/
enum OpMode {iABC, iABx, iAsBx}; /* basic instruction format */
/*
** size and position of opcode arguments.
*/
#define SIZE_C 10
#define SIZE_B 8
#define SIZE_Bx (SIZE_C + SIZE_B)
#define SIZE_A 8
#define SIZE_OP 6
#define POS_C SIZE_OP
#define POS_B (POS_C + SIZE_C)
#define POS_Bx POS_C
#define POS_A (POS_B + SIZE_B)
/*
** limits for opcode arguments.
** we use (signed) int to manipulate most arguments,
** so they must fit in BITS_INT-1 bits (-1 for sign)
*/
#if SIZE_Bx < BITS_INT-1
#define MAXARG_Bx ((1<<SIZE_Bx)-1)
#define MAXARG_sBx (MAXARG_Bx>>1) /* `sBx' is signed */
#else
#define MAXARG_Bx MAX_INT
#define MAXARG_sBx MAX_INT
#endif
#define MAXARG_A ((1<<SIZE_A)-1)
#define MAXARG_B ((1<<SIZE_B)-1)
#define MAXARG_C ((1<<SIZE_C)-1)
/* creates a mask with `n' 1 bits at position `p' */
#define MASK1(n,p) ((~((~(Instruction)0)<<n))<<p)
/* creates a mask with `n' 0 bits at position `p' */
#define MASK0(n,p) (~MASK1(n,p))
/*
** the following macros help to manipulate instructions
*/
#define GET_OPCODE(i) (cast(OpCode, (i)&MASK1(SIZE_OP,0)))
#define SET_OPCODE(i,o) ((i) = (((i)&MASK0(SIZE_OP,0)) | cast(Instruction, o)))
#define GETARG_A(i) (cast(int, (i)>>POS_A))
#define SETARG_A(i,u) ((i) = (((i)&MASK0(SIZE_A,POS_A)) | \
((cast(Instruction, u)<<POS_A)&MASK1(SIZE_A,POS_A))))
#define GETARG_B(i) (cast(int, ((i)>>POS_B) & MASK1(SIZE_B,0)))
#define SETARG_B(i,b) ((i) = (((i)&MASK0(SIZE_B,POS_B)) | \
((cast(Instruction, b)<<POS_B)&MASK1(SIZE_B,POS_B))))
#define GETARG_C(i) (cast(int, ((i)>>POS_C) & MASK1(SIZE_C,0)))
#define SETARG_C(i,b) ((i) = (((i)&MASK0(SIZE_C,POS_C)) | \
((cast(Instruction, b)<<POS_C)&MASK1(SIZE_C,POS_C))))
#define GETARG_Bx(i) (cast(int, ((i)>>POS_Bx) & MASK1(SIZE_Bx,0)))
#define SETARG_Bx(i,b) ((i) = (((i)&MASK0(SIZE_Bx,POS_Bx)) | \
((cast(Instruction, b)<<POS_Bx)&MASK1(SIZE_Bx,POS_Bx))))
#define GETARG_sBx(i) (GETARG_Bx(i)-MAXARG_sBx)
#define SETARG_sBx(i,b) SETARG_Bx((i),cast(unsigned int, (b)+MAXARG_sBx))
#define CREATE_ABC(o,a,b,c) (cast(Instruction, o) \
| (cast(Instruction, a)<<POS_A) \
| (cast(Instruction, b)<<POS_B) \
| (cast(Instruction, c)<<POS_C))
#define CREATE_ABx(o,a,bc) (cast(Instruction, o) \
| (cast(Instruction, a)<<POS_A) \
| (cast(Instruction, bc)<<POS_Bx))
/*
** invalid registers that fits in 8 bits
*/
#define NO_REG MAXARG_A
#define NO_REG1 (NO_REG+1)
/*
** R(x) - register
** Kst(x) - constant (in constant table)
** R/K(x) == if x < MAXSTACK then R(x) else Kst(x-MAXSTACK)
*/
typedef enum {
/*----------------------------------------------------------------------
name args description
------------------------------------------------------------------------*/
OP_MOVE,/* A B R(A) := R(B) */
OP_LOADK,/* A Bx R(A) := Kst(Bx) */
OP_LOADBOOL,/* A B C R(A) := (Bool)B; if (C) PC++ */
OP_LOADNIL,/* A B R(A) := ... := R(B) := nil */
OP_GETUPVAL,/* A B R(A) := UpValue[B] */
OP_GETGLOBAL,/* A Bx R(A) := Gbl[Kst(Bx)] */
OP_GETTABLE,/* A B C R(A) := R(B)[R/K(C)] */
OP_SETGLOBAL,/* A Bx Gbl[Kst(Bx)] := R(A) */
OP_SETUPVAL,/* A B UpValue[B] := R(A) */
OP_SETTABLE,/* A B C R(B)[R/K(C)] := R(A) */
OP_NEWTABLE,/* A B C R(A) := {} (size = B,C) */
OP_SELF,/* A B C R(A+1) := R(B); R(A) := R(B)[R/K(C)] */
OP_ADD,/* A B C R(A) := R(B) + R/K(C) */
OP_SUB,/* A B C R(A) := R(B) - R/K(C) */
OP_MUL,/* A B C R(A) := R(B) * R/K(C) */
OP_DIV,/* A B C R(A) := R(B) / R/K(C) */
OP_POW,/* A B C R(A) := R(B) ^ R/K(C) */
OP_UNM,/* A B R(A) := -R(B) */
OP_NOT,/* A B R(A) := not R(B) */
OP_CONCAT,/* A B C R(A) := R(B).. ... ..R(C) */
OP_JMP,/* sBx PC += sBx */
OP_EQ,/* A B C if ((R(A) == R/K(C)) ~= B) then pc++ */
OP_LT,/* A B C if ((R(A) < R/K(C)) ~= B) then pc++ */
OP_LE,/* A B C if ((R(A) <= R/K(C)) ~= B) then pc++ */
OP_GT,/* A B C if ((R(A) > R/K(C)) ~= B) then pc++ */
OP_GE,/* A B C if ((R(A) >= R/K(C)) ~= B) then pc++ */
OP_TEST,/* A B C if (R(C) <=> B) then R(A) := R(C) else pc++ */
OP_CALL,/* A B C R(A), ... ,R(A+C-2) := R(A)(R(A+1), ... ,R(A+B-1)) */
OP_TAILCALL,/* A B C return R(A)(R(A+1), ... ,R(A+B-1)) */
OP_RETURN,/* A B return R(A), ... ,R(A+B-2) (see note) */
OP_FORLOOP,/* A sBx R(A)+=R(A+2); if R(A) <?= R(A+1) then PC+= sBx */
OP_TFORLOOP,/* A C R(A+2), ... ,R(A+2+C) := R(A)(R(A+1), R(A+2));
if R(A+2) ~= nil then pc++ */
OP_TFORPREP,/* A sBx if type(R(A)) == table then R(A+1):=R(A), R(A):=next;
PC += sBx */
OP_SETLIST,/* A Bx R(A)[Bx-Bx%FPF+i] := R(A+i), 1 <= i <= Bx%FPF+1 */
OP_SETLISTO,/* A Bx */
OP_CLOSE,/* A close all variables in the stack up to (>=) R(A)*/
OP_CLOSURE/* A Bx R(A) := closure(KPROTO[Bx], R(A), ... ,R(A+n)) */
} OpCode;
#define NUM_OPCODES (cast(int, OP_CLOSURE+1))
/*===========================================================================
Notes:
(1) In OP_CALL, if (B == 0) then B = top. C is the number of returns - 1,
and can be 0: OP_CALL then sets `top' to last_result+1, so
next open instruction (OP_CALL, OP_RETURN, OP_SETLIST) may use `top'.
(2) In OP_RETURN, if (B == 0) then return up to `top'
(3) For comparisons, B specifies what conditions the test should accept.
(4) All `skips' (pc++) assume that next instruction is a jump
===========================================================================*/
/*
** masks for instruction properties
*/
enum OpModeMask {
OpModeBreg = 2, /* B is a register */
OpModeCreg, /* C is a register/constant */
OpModesetA, /* instruction set register A */
OpModeK, /* Bx is a constant */
OpModeT /* operator is a test */
};
extern const lu_byte luaP_opmodes[NUM_OPCODES];
#define getOpMode(m) (cast(enum OpMode, luaP_opmodes[m] & 3))
#define testOpMode(m, b) (luaP_opmodes[m] & (1 << (b)))
#ifdef LUA_OPNAMES
extern const char *const luaP_opnames[]; /* opcode names */
#endif
/* number of list items to accumulate before a SETLIST instruction */
/* (must be a power of 2) */
#define LFIELDS_PER_FLUSH 32
#endif

1309
lparser.c

File diff suppressed because it is too large Load Diff

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@@ -1,71 +0,0 @@
/*
** $Id: lparser.h,v 1.43 2002/05/10 19:22:11 roberto Exp roberto $
** Lua Parser
** See Copyright Notice in lua.h
*/
#ifndef lparser_h
#define lparser_h
#include "llimits.h"
#include "lobject.h"
#include "ltable.h"
#include "lzio.h"
/*
** Expression descriptor
*/
typedef enum {
VVOID, /* no value */
VNIL,
VTRUE,
VFALSE,
VK, /* info = index of constant in `k' */
VLOCAL, /* info = local register */
VUPVAL, /* info = index of upvalue in `upvalues' */
VGLOBAL, /* info = index of table; aux = index of global name in `k' */
VINDEXED, /* info = table register; aux = index register (or `k') */
VJMP, /* info = instruction pc */
VRELOCABLE, /* info = instruction pc */
VNONRELOC, /* info = result register */
VCALL /* info = result register */
} expkind;
typedef struct expdesc {
expkind k;
int info, aux;
int t; /* patch list of `exit when true' */
int f; /* patch list of `exit when false' */
} expdesc;
struct BlockCnt; /* defined in lparser.c */
/* state needed to generate code for a given function */
typedef struct FuncState {
Proto *f; /* current function header */
Table *h; /* table to find (and reuse) elements in `k' */
struct FuncState *prev; /* enclosing function */
struct LexState *ls; /* lexical state */
struct lua_State *L; /* copy of the Lua state */
struct BlockCnt *bl; /* chain of current blocks */
int pc; /* next position to code (equivalent to `ncode') */
int lasttarget; /* `pc' of last `jump target' */
int jpc; /* list of pending jumps to `pc' */
int freereg; /* first free register */
int nk; /* number of elements in `k' */
int np; /* number of elements in `p' */
int nlocvars; /* number of elements in `locvars' */
int nactvar; /* number of active local variables */
expdesc upvalues[MAXUPVALUES]; /* upvalues */
int actvar[MAXVARS]; /* declared-variable stack */
} FuncState;
Proto *luaY_parser (lua_State *L, ZIO *z);
#endif

192
lstate.c
View File

@@ -1,192 +0,0 @@
/*
** $Id: lstate.c,v 1.102 2002/08/06 15:32:22 roberto Exp roberto $
** Global State
** See Copyright Notice in lua.h
*/
#include "lua.h"
#include "ldebug.h"
#include "ldo.h"
#include "lfunc.h"
#include "lgc.h"
#include "llex.h"
#include "lmem.h"
#include "lstate.h"
#include "lstring.h"
#include "ltable.h"
#include "ltm.h"
static void close_state (lua_State *L);
/*
** you can change this function through the official API
** call `lua_setpanicf'
*/
static int default_panic (lua_State *L) {
UNUSED(L);
return 0;
}
static void stack_init (lua_State *L, lua_State *OL) {
L->stack = luaM_newvector(OL, BASIC_STACK_SIZE + EXTRA_STACK, TObject);
L->stacksize = BASIC_STACK_SIZE + EXTRA_STACK;
L->top = L->stack;
L->stack_last = L->stack+(L->stacksize - EXTRA_STACK)-1;
L->base_ci = luaM_newvector(OL, BASIC_CI_SIZE, CallInfo);
L->ci = L->base_ci;
L->ci->state = CI_C; /* not a Lua function */
setnilvalue(L->top++); /* `function' entry for this `ci' */
L->ci->base = L->top;
L->ci->top = L->top + LUA_MINSTACK;
L->size_ci = BASIC_CI_SIZE;
L->end_ci = L->base_ci + L->size_ci;
}
/*
** open parts that may cause memory-allocation errors
*/
static void f_luaopen (lua_State *L, void *ud) {
UNUSED(ud);
/* create a new global state */
L->l_G = luaM_new(L, global_State);
G(L)->GCthreshold = 0; /* mark it as unfinished state */
G(L)->strt.size = 0;
G(L)->strt.nuse = 0;
G(L)->strt.hash = NULL;
G(L)->Mbuffer = NULL;
G(L)->Mbuffsize = 0;
G(L)->panic = &default_panic;
G(L)->rootproto = NULL;
G(L)->rootcl = NULL;
G(L)->roottable = NULL;
G(L)->rootupval = NULL;
G(L)->rootudata = NULL;
G(L)->tmudata = NULL;
setnilvalue(key(G(L)->dummynode));
setnilvalue(val(G(L)->dummynode));
G(L)->dummynode->next = NULL;
G(L)->nblocks = sizeof(lua_State) + sizeof(global_State);
stack_init(L, L); /* init stack */
/* create default meta table with a dummy table, and then close the loop */
sethvalue(defaultmeta(L), NULL);
sethvalue(defaultmeta(L), luaH_new(L, 0, 4));
hvalue(defaultmeta(L))->metatable = hvalue(defaultmeta(L));
sethvalue(gt(L), luaH_new(L, 0, 4)); /* table of globals */
sethvalue(registry(L), luaH_new(L, 0, 0)); /* registry */
luaS_resize(L, MINSTRTABSIZE); /* initial size of string table */
luaT_init(L);
luaX_init(L);
luaS_fix(luaS_newliteral(L, MEMERRMSG));
G(L)->GCthreshold = 4*G(L)->nblocks;
}
static void preinit_state (lua_State *L) {
L->stack = NULL;
L->stacksize = 0;
L->errorJmp = NULL;
L->hook = NULL;
L->hookmask = 0;
setallowhook(L, 1);
resethookcount(L);
L->openupval = NULL;
L->size_ci = 0;
L->base_ci = L->ci = NULL;
L->errfunc = 0;
setnilvalue(defaultmeta(L));
setnilvalue(gt(L));
setnilvalue(registry(L));
}
LUA_API lua_State *lua_newthread (lua_State *OL) {
lua_State *L;
lua_lock(OL);
L = luaM_new(OL, lua_State);
preinit_state(L);
L->l_G = OL->l_G;
OL->next->previous = L; /* insert L into linked list */
L->next = OL->next;
OL->next = L;
L->previous = OL;
stack_init(L, OL); /* init stack */
setobj(defaultmeta(L), defaultmeta(OL)); /* share default meta table */
setobj(gt(L), gt(OL)); /* share table of globals */
setobj(registry(L), registry(OL)); /* share registry */
lua_unlock(OL);
lua_userstateopen(L);
return L;
}
LUA_API lua_State *lua_open (void) {
lua_State *L;
L = luaM_new(NULL, lua_State);
if (L) { /* allocation OK? */
preinit_state(L);
L->l_G = NULL;
L->next = L->previous = L;
if (luaD_rawrunprotected(L, f_luaopen, NULL) != 0) {
/* memory allocation error: free partial state */
close_state(L);
L = NULL;
}
}
lua_userstateopen(L);
return L;
}
void luaE_closethread (lua_State *OL, lua_State *L) {
luaF_close(L, L->stack); /* close all upvalues for this thread */
lua_assert(L->openupval == NULL);
L->previous->next = L->next;
L->next->previous = L->previous;
luaM_freearray(OL, L->base_ci, L->size_ci, CallInfo);
luaM_freearray(OL, L->stack, L->stacksize, TObject);
luaM_freelem(OL, L);
}
static void close_state (lua_State *L) {
luaF_close(L, L->stack); /* close all upvalues for this thread */
if (G(L)) { /* close global state */
luaC_collect(L, 1); /* collect all elements */
lua_assert(G(L)->rootproto == NULL);
lua_assert(G(L)->rootudata == NULL);
lua_assert(G(L)->rootcl == NULL);
lua_assert(G(L)->rootupval == NULL);
lua_assert(G(L)->roottable == NULL);
luaS_freeall(L);
luaM_freearray(L, G(L)->Mbuffer, G(L)->Mbuffsize, char);
luaM_freelem(NULL, L->l_G);
}
luaE_closethread(NULL, L);
}
LUA_API void lua_closethread (lua_State *L, lua_State *thread) {
lua_lock(L);
if (L == thread) luaG_runerror(L, "cannot close only thread of a state");
luaE_closethread(L, thread);
lua_unlock(L);
}
LUA_API void lua_close (lua_State *L) {
lua_lock(L);
luaC_callallgcTM(L); /* call GC tag methods for all udata */
lua_assert(G(L)->tmudata == NULL);
while (L->next != L) /* then, close all other threads */
luaE_closethread(L, L->next);
close_state(L);
}

172
lstate.h
View File

@@ -1,172 +0,0 @@
/*
** $Id: lstate.h,v 1.93 2002/08/07 19:22:39 roberto Exp roberto $
** Global State
** See Copyright Notice in lua.h
*/
#ifndef lstate_h
#define lstate_h
#include "lua.h"
#include "lobject.h"
#include "ltm.h"
/*
** macros for thread syncronization inside Lua core machine:
** all accesses to the global state and to global objects are syncronized.
** Because threads can read the stack of other threads
** (when running garbage collection),
** a thread must also syncronize any write-access to its own stack.
** Unsyncronized accesses are allowed only when reading its own stack,
** or when reading immutable fields from global objects
** (such as string values and udata values).
*/
#ifndef lua_lock
#define lua_lock(L) ((void) 0)
#endif
#ifndef lua_unlock
#define lua_unlock(L) ((void) 0)
#endif
/*
** macro to allow the inclusion of user information in Lua state
*/
#ifndef LUA_USERSTATE
#define LUA_USERSTATE
#endif
#ifndef lua_userstateopen
#define lua_userstateopen(l)
#endif
struct lua_longjmp; /* defined in ldo.c */
/*
** array of `global' objects
*/
#define NUMGLOBS 3
/* default meta table (both for tables and udata) */
#define defaultmeta(L) (L->globs)
/* table of globals */
#define gt(L) (L->globs + 1)
/* registry */
#define registry(L) (L->globs + 2)
/* extra stack space to handle TM calls and some other extras */
#define EXTRA_STACK 5
#define BASIC_CI_SIZE 8
#define BASIC_STACK_SIZE (2*LUA_MINSTACK)
typedef struct stringtable {
TString **hash;
ls_nstr nuse; /* number of elements */
int size;
} stringtable;
/*
** informations about a call
*/
typedef struct CallInfo {
StkId base; /* base for called function */
StkId top; /* top for this function */
int state; /* bit fields; see below */
union {
struct { /* for Lua functions */
const Instruction *savedpc;
const Instruction **pc; /* points to `pc' variable in `luaV_execute' */
StkId *pb; /* points to `base' variable in `luaV_execute' */
} l;
struct { /* for C functions */
int yield_results;
} c;
} u;
} CallInfo;
/*
** bit fields for `CallInfo.state'
*/
#define CI_C 1 /* 1 if function is a C function */
/* 1 if (Lua) function has an active `luaV_execute' running it */
#define CI_HASFRAME 2
/* 1 if Lua function is calling another Lua function (and therefore its
`pc' is being used by the other, and therefore CI_SAVEDPC is 1 too) */
#define CI_CALLING 4
#define CI_SAVEDPC 8 /* 1 if `savedpc' is updated */
#define ci_func(ci) (clvalue((ci)->base - 1))
/*
** `global state', shared by all threads of this state
*/
typedef struct global_State {
stringtable strt; /* hash table for strings */
Proto *rootproto; /* list of all prototypes */
Closure *rootcl; /* list of all closures */
Table *roottable; /* list of all tables */
UpVal *rootupval; /* list of closed up values */
Udata *rootudata; /* list of all userdata */
Udata *tmudata; /* list of userdata to be GC */
void *Mbuffer; /* global buffer */
size_t Mbuffsize; /* size of Mbuffer */
lu_mem GCthreshold;
lu_mem nblocks; /* number of `bytes' currently allocated */
lua_CFunction panic; /* to be called in unprotected errors */
Node dummynode[1]; /* common node array for all empty tables */
TString *tmname[TM_N]; /* array with tag-method names */
} global_State;
/*
** `per thread' state
*/
struct lua_State {
LUA_USERSTATE
StkId top; /* first free slot in the stack */
global_State *l_G;
CallInfo *ci; /* call info for current function */
StkId stack_last; /* last free slot in the stack */
StkId stack; /* stack base */
int stacksize;
CallInfo *end_ci; /* points after end of ci array*/
CallInfo *base_ci; /* array of CallInfo's */
int size_ci; /* size of array `base_ci' */
unsigned long hookmask;
ls_count hookcount;
lua_Hook hook;
UpVal *openupval; /* list of open upvalues in this stack */
struct lua_longjmp *errorJmp; /* current error recover point */
ptrdiff_t errfunc; /* current error handling function (stack index) */
lua_State *next; /* circular double linked list of states */
lua_State *previous;
TObject globs[NUMGLOBS]; /* registry, table of globals, etc. */
};
#define G(L) (L->l_G)
void luaE_closethread (lua_State *OL, lua_State *L);
#endif

View File

@@ -1,97 +0,0 @@
/*
** $Id: lstring.c,v 1.73 2002/03/20 18:37:13 roberto Exp roberto $
** String table (keeps all strings handled by Lua)
** See Copyright Notice in lua.h
*/
#include <string.h>
#include "lua.h"
#include "lmem.h"
#include "lobject.h"
#include "lstate.h"
#include "lstring.h"
void luaS_freeall (lua_State *L) {
lua_assert(G(L)->strt.nuse==0);
luaM_freearray(L, G(L)->strt.hash, G(L)->strt.size, TString *);
}
void luaS_resize (lua_State *L, int newsize) {
TString **newhash = luaM_newvector(L, newsize, TString *);
stringtable *tb = &G(L)->strt;
int i;
for (i=0; i<newsize; i++) newhash[i] = NULL;
/* rehash */
for (i=0; i<tb->size; i++) {
TString *p = tb->hash[i];
while (p) { /* for each node in the list */
TString *next = p->tsv.nexthash; /* save next */
lu_hash h = p->tsv.hash;
int h1 = lmod(h, newsize); /* new position */
lua_assert(cast(int, h%newsize) == lmod(h, newsize));
p->tsv.nexthash = newhash[h1]; /* chain it in new position */
newhash[h1] = p;
p = next;
}
}
luaM_freearray(L, tb->hash, tb->size, TString *);
tb->size = newsize;
tb->hash = newhash;
}
static TString *newlstr (lua_State *L, const char *str, size_t l, lu_hash h) {
TString *ts = cast(TString *, luaM_malloc(L, sizestring(l)));
stringtable *tb;
ts->tsv.nexthash = NULL;
ts->tsv.len = l;
ts->tsv.hash = h;
ts->tsv.marked = 0;
memcpy(ts+1, str, l*sizeof(char));
((char *)(ts+1))[l] = '\0'; /* ending 0 */
tb = &G(L)->strt;
h = lmod(h, tb->size);
ts->tsv.nexthash = tb->hash[h]; /* chain new entry */
tb->hash[h] = ts;
tb->nuse++;
if (tb->nuse > cast(ls_nstr, tb->size) && tb->size <= MAX_INT/2)
luaS_resize(L, tb->size*2); /* too crowded */
return ts;
}
TString *luaS_newlstr (lua_State *L, const char *str, size_t l) {
TString *ts;
lu_hash h = (lu_hash)l; /* seed */
size_t step = (l>>5)+1; /* if string is too long, don't hash all its chars */
size_t l1;
for (l1=l; l1>=step; l1-=step) /* compute hash */
h = h ^ ((h<<5)+(h>>2)+(unsigned char)(str[l1-1]));
for (ts = G(L)->strt.hash[lmod(h, G(L)->strt.size)];
ts != NULL;
ts = ts->tsv.nexthash) {
if (ts->tsv.len == l && (memcmp(str, getstr(ts), l) == 0))
return ts;
}
return newlstr(L, str, l, h); /* not found */
}
Udata *luaS_newudata (lua_State *L, size_t s) {
Udata *u;
s = (s+3) & (~(size_t)3); /* make sure size is multiple of 4 */
u = cast(Udata *, luaM_malloc(L, sizeudata(s)));
u->uv.len = s;
u->uv.metatable = hvalue(defaultmeta(L));
/* chain it on udata list */
u->uv.next = G(L)->rootudata;
G(L)->rootudata = u;
return u;
}

View File

@@ -1,41 +0,0 @@
/*
** $Id: lstring.h,v 1.35 2001/11/28 20:13:13 roberto Exp roberto $
** String table (keep all strings handled by Lua)
** See Copyright Notice in lua.h
*/
#ifndef lstring_h
#define lstring_h
#include "lobject.h"
#include "lstate.h"
/*
** any TString with mark>=FIXMARK is never collected.
** Marks>=RESERVEDMARK are used to identify reserved words.
*/
#define FIXMARK 2
#define RESERVEDMARK 3
#define sizestring(l) (cast(lu_mem, sizeof(union TString))+ \
(cast(lu_mem, l)+1)*sizeof(char))
#define sizeudata(l) (cast(lu_mem, sizeof(union Udata))+(l))
#define luaS_new(L, s) (luaS_newlstr(L, s, strlen(s)))
#define luaS_newliteral(L, s) (luaS_newlstr(L, "" s, \
(sizeof(s)/sizeof(char))-1))
#define luaS_fix(s) ((s)->tsv.marked = FIXMARK)
void luaS_resize (lua_State *L, int newsize);
Udata *luaS_newudata (lua_State *L, size_t s);
void luaS_freeall (lua_State *L);
TString *luaS_newlstr (lua_State *L, const char *str, size_t l);
#endif

712
lstrlib.c
View File

@@ -1,712 +0,0 @@
/*
** $Id: lstrlib.c,v 1.86 2002/06/25 19:16:44 roberto Exp roberto $
** Standard library for string operations and pattern-matching
** See Copyright Notice in lua.h
*/
#include <ctype.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "lua.h"
#include "lauxlib.h"
#include "lualib.h"
/* macro to `unsign' a character */
#ifndef uchar
#define uchar(c) ((unsigned char)(c))
#endif
typedef long sint32; /* a signed version for size_t */
static int str_len (lua_State *L) {
size_t l;
luaL_check_lstr(L, 1, &l);
lua_pushnumber(L, l);
return 1;
}
static sint32 posrelat (sint32 pos, size_t len) {
/* relative string position: negative means back from end */
return (pos>=0) ? pos : (sint32)len+pos+1;
}
static int str_sub (lua_State *L) {
size_t l;
const char *s = luaL_check_lstr(L, 1, &l);
sint32 start = posrelat(luaL_check_long(L, 2), l);
sint32 end = posrelat(luaL_opt_long(L, 3, -1), l);
if (start < 1) start = 1;
if (end > (sint32)l) end = l;
if (start <= end)
lua_pushlstring(L, s+start-1, end-start+1);
else lua_pushliteral(L, "");
return 1;
}
static int str_lower (lua_State *L) {
size_t l;
size_t i;
luaL_Buffer b;
const char *s = luaL_check_lstr(L, 1, &l);
luaL_buffinit(L, &b);
for (i=0; i<l; i++)
luaL_putchar(&b, tolower(uchar(s[i])));
luaL_pushresult(&b);
return 1;
}
static int str_upper (lua_State *L) {
size_t l;
size_t i;
luaL_Buffer b;
const char *s = luaL_check_lstr(L, 1, &l);
luaL_buffinit(L, &b);
for (i=0; i<l; i++)
luaL_putchar(&b, toupper(uchar(s[i])));
luaL_pushresult(&b);
return 1;
}
static int str_rep (lua_State *L) {
size_t l;
luaL_Buffer b;
const char *s = luaL_check_lstr(L, 1, &l);
int n = luaL_check_int(L, 2);
luaL_buffinit(L, &b);
while (n-- > 0)
luaL_addlstring(&b, s, l);
luaL_pushresult(&b);
return 1;
}
static int str_byte (lua_State *L) {
size_t l;
const char *s = luaL_check_lstr(L, 1, &l);
sint32 pos = posrelat(luaL_opt_long(L, 2, 1), l);
luaL_arg_check(L, 0 < pos && (size_t)(pos) <= l, 2, "out of range");
lua_pushnumber(L, uchar(s[pos-1]));
return 1;
}
static int str_char (lua_State *L) {
int n = lua_gettop(L); /* number of arguments */
int i;
luaL_Buffer b;
luaL_buffinit(L, &b);
for (i=1; i<=n; i++) {
int c = luaL_check_int(L, i);
luaL_arg_check(L, uchar(c) == c, i, "invalid value");
luaL_putchar(&b, uchar(c));
}
luaL_pushresult(&b);
return 1;
}
/*
** {======================================================
** PATTERN MATCHING
** =======================================================
*/
#ifndef MAX_CAPTURES
#define MAX_CAPTURES 32 /* arbitrary limit */
#endif
#define CAP_UNFINISHED (-1)
#define CAP_POSITION (-2)
typedef struct MatchState {
const char *src_init; /* init of source string */
const char *src_end; /* end (`\0') of source string */
lua_State *L;
int level; /* total number of captures (finished or unfinished) */
struct {
const char *init;
sint32 len;
} capture[MAX_CAPTURES];
} MatchState;
#define ESC '%'
#define SPECIALS "^$*+?.([%-"
static int check_capture (MatchState *ms, int l) {
l -= '1';
if (l < 0 || l >= ms->level || ms->capture[l].len == CAP_UNFINISHED)
return luaL_error(ms->L, "invalid capture index");
return l;
}
static int capture_to_close (MatchState *ms) {
int level = ms->level;
for (level--; level>=0; level--)
if (ms->capture[level].len == CAP_UNFINISHED) return level;
return luaL_error(ms->L, "invalid pattern capture");
}
static const char *luaI_classend (MatchState *ms, const char *p) {
switch (*p++) {
case ESC:
if (*p == '\0')
luaL_error(ms->L, "malformed pattern (ends with `%')");
return p+1;
case '[':
if (*p == '^') p++;
do { /* look for a `]' */
if (*p == '\0')
luaL_error(ms->L, "malformed pattern (missing `]')");
if (*(p++) == ESC && *p != '\0')
p++; /* skip escapes (e.g. `%]') */
} while (*p != ']');
return p+1;
default:
return p;
}
}
static int match_class (int c, int cl) {
int res;
switch (tolower(cl)) {
case 'a' : res = isalpha(c); break;
case 'c' : res = iscntrl(c); break;
case 'd' : res = isdigit(c); break;
case 'l' : res = islower(c); break;
case 'p' : res = ispunct(c); break;
case 's' : res = isspace(c); break;
case 'u' : res = isupper(c); break;
case 'w' : res = isalnum(c); break;
case 'x' : res = isxdigit(c); break;
case 'z' : res = (c == 0); break;
default: return (cl == c);
}
return (islower(cl) ? res : !res);
}
static int matchbracketclass (int c, const char *p, const char *ec) {
int sig = 1;
if (*(p+1) == '^') {
sig = 0;
p++; /* skip the `^' */
}
while (++p < ec) {
if (*p == ESC) {
p++;
if (match_class(c, *p))
return sig;
}
else if ((*(p+1) == '-') && (p+2 < ec)) {
p+=2;
if (uchar(*(p-2)) <= c && c <= uchar(*p))
return sig;
}
else if (uchar(*p) == c) return sig;
}
return !sig;
}
static int luaI_singlematch (int c, const char *p, const char *ep) {
switch (*p) {
case '.': /* matches any char */
return 1;
case ESC:
return match_class(c, *(p+1));
case '[':
return matchbracketclass(c, p, ep-1);
default:
return (uchar(*p) == c);
}
}
static const char *match (MatchState *ms, const char *s, const char *p);
static const char *matchbalance (MatchState *ms, const char *s,
const char *p) {
if (*p == 0 || *(p+1) == 0)
luaL_error(ms->L, "unbalanced pattern");
if (*s != *p) return NULL;
else {
int b = *p;
int e = *(p+1);
int cont = 1;
while (++s < ms->src_end) {
if (*s == e) {
if (--cont == 0) return s+1;
}
else if (*s == b) cont++;
}
}
return NULL; /* string ends out of balance */
}
static const char *max_expand (MatchState *ms, const char *s,
const char *p, const char *ep) {
sint32 i = 0; /* counts maximum expand for item */
while ((s+i)<ms->src_end && luaI_singlematch(uchar(*(s+i)), p, ep))
i++;
/* keeps trying to match with the maximum repetitions */
while (i>=0) {
const char *res = match(ms, (s+i), ep+1);
if (res) return res;
i--; /* else didn't match; reduce 1 repetition to try again */
}
return NULL;
}
static const char *min_expand (MatchState *ms, const char *s,
const char *p, const char *ep) {
for (;;) {
const char *res = match(ms, s, ep+1);
if (res != NULL)
return res;
else if (s<ms->src_end && luaI_singlematch(uchar(*s), p, ep))
s++; /* try with one more repetition */
else return NULL;
}
}
static const char *start_capture (MatchState *ms, const char *s,
const char *p, int what) {
const char *res;
int level = ms->level;
if (level >= MAX_CAPTURES) luaL_error(ms->L, "too many captures");
ms->capture[level].init = s;
ms->capture[level].len = what;
ms->level = level+1;
if ((res=match(ms, s, p)) == NULL) /* match failed? */
ms->level--; /* undo capture */
return res;
}
static const char *end_capture (MatchState *ms, const char *s,
const char *p) {
int l = capture_to_close(ms);
const char *res;
ms->capture[l].len = s - ms->capture[l].init; /* close capture */
if ((res = match(ms, s, p)) == NULL) /* match failed? */
ms->capture[l].len = CAP_UNFINISHED; /* undo capture */
return res;
}
static const char *match_capture (MatchState *ms, const char *s, int l) {
size_t len;
l = check_capture(ms, l);
len = ms->capture[l].len;
if ((size_t)(ms->src_end-s) >= len &&
memcmp(ms->capture[l].init, s, len) == 0)
return s+len;
else return NULL;
}
static const char *match (MatchState *ms, const char *s, const char *p) {
init: /* using goto's to optimize tail recursion */
switch (*p) {
case '(': /* start capture */
if (*(p+1) == ')') /* position capture? */
return start_capture(ms, s, p+2, CAP_POSITION);
else
return start_capture(ms, s, p+1, CAP_UNFINISHED);
case ')': /* end capture */
return end_capture(ms, s, p+1);
case ESC: /* may be %[0-9] or %b */
if (isdigit(uchar(*(p+1)))) { /* capture? */
s = match_capture(ms, s, *(p+1));
if (s == NULL) return NULL;
p+=2; goto init; /* else return match(ms, s, p+2) */
}
else if (*(p+1) == 'b') { /* balanced string? */
s = matchbalance(ms, s, p+2);
if (s == NULL) return NULL;
p+=4; goto init; /* else return match(ms, s, p+4); */
}
else goto dflt; /* case default */
case '\0': /* end of pattern */
return s; /* match succeeded */
case '$':
if (*(p+1) == '\0') /* is the `$' the last char in pattern? */
return (s == ms->src_end) ? s : NULL; /* check end of string */
else goto dflt;
default: dflt: { /* it is a pattern item */
const char *ep = luaI_classend(ms, p); /* points to what is next */
int m = s<ms->src_end && luaI_singlematch(uchar(*s), p, ep);
switch (*ep) {
case '?': { /* optional */
const char *res;
if (m && ((res=match(ms, s+1, ep+1)) != NULL))
return res;
p=ep+1; goto init; /* else return match(ms, s, ep+1); */
}
case '*': /* 0 or more repetitions */
return max_expand(ms, s, p, ep);
case '+': /* 1 or more repetitions */
return (m ? max_expand(ms, s+1, p, ep) : NULL);
case '-': /* 0 or more repetitions (minimum) */
return min_expand(ms, s, p, ep);
default:
if (!m) return NULL;
s++; p=ep; goto init; /* else return match(ms, s+1, ep); */
}
}
}
}
static const char *lmemfind (const char *s1, size_t l1,
const char *s2, size_t l2) {
if (l2 == 0) return s1; /* empty strings are everywhere */
else if (l2 > l1) return NULL; /* avoids a negative `l1' */
else {
const char *init; /* to search for a `*s2' inside `s1' */
l2--; /* 1st char will be checked by `memchr' */
l1 = l1-l2; /* `s2' cannot be found after that */
while (l1 > 0 && (init = (const char *)memchr(s1, *s2, l1)) != NULL) {
init++; /* 1st char is already checked */
if (memcmp(init, s2+1, l2) == 0)
return init-1;
else { /* correct `l1' and `s1' to try again */
l1 -= init-s1;
s1 = init;
}
}
return NULL; /* not found */
}
}
static void push_onecapture (MatchState *ms, int i) {
int l = ms->capture[i].len;
if (l == CAP_UNFINISHED) luaL_error(ms->L, "unfinished capture");
if (l == CAP_POSITION)
lua_pushnumber(ms->L, ms->capture[i].init - ms->src_init + 1);
else
lua_pushlstring(ms->L, ms->capture[i].init, l);
}
static int push_captures (MatchState *ms, const char *s, const char *e) {
int i;
luaL_check_stack(ms->L, ms->level, "too many captures");
if (ms->level == 0 && s) { /* no explicit captures? */
lua_pushlstring(ms->L, s, e-s); /* return whole match */
return 1;
}
else { /* return all captures */
for (i=0; i<ms->level; i++)
push_onecapture(ms, i);
return ms->level; /* number of strings pushed */
}
}
static int str_find (lua_State *L) {
size_t l1, l2;
const char *s = luaL_check_lstr(L, 1, &l1);
const char *p = luaL_check_lstr(L, 2, &l2);
sint32 init = posrelat(luaL_opt_long(L, 3, 1), l1) - 1;
luaL_arg_check(L, 0 <= init && (size_t)(init) <= l1, 3, "out of range");
if (lua_toboolean(L, 4) || /* explicit request? */
strpbrk(p, SPECIALS) == NULL) { /* or no special characters? */
/* do a plain search */
const char *s2 = lmemfind(s+init, l1-init, p, l2);
if (s2) {
lua_pushnumber(L, s2-s+1);
lua_pushnumber(L, s2-s+l2);
return 2;
}
}
else {
MatchState ms;
int anchor = (*p == '^') ? (p++, 1) : 0;
const char *s1=s+init;
ms.L = L;
ms.src_init = s;
ms.src_end = s+l1;
do {
const char *res;
ms.level = 0;
if ((res=match(&ms, s1, p)) != NULL) {
lua_pushnumber(L, s1-s+1); /* start */
lua_pushnumber(L, res-s); /* end */
return push_captures(&ms, NULL, 0) + 2;
}
} while (s1++<ms.src_end && !anchor);
}
lua_pushnil(L); /* not found */
return 1;
}
static int gfind_aux (lua_State *L) {
MatchState ms;
const char *s = lua_tostring(L, lua_upvalueindex(1));
size_t ls = lua_strlen(L, lua_upvalueindex(1));
const char *p = lua_tostring(L, lua_upvalueindex(2));
const char *src;
ms.L = L;
ms.src_init = s;
ms.src_end = s+ls;
for (src = s + (size_t)lua_tonumber(L, lua_upvalueindex(3));
src <= ms.src_end;
src++) {
const char *e;
ms.level = 0;
if ((e = match(&ms, src, p)) != NULL) {
int newstart = e-s;
if (e == src) newstart++; /* empty match? go at least one position */
lua_pushnumber(L, newstart);
lua_replace(L, lua_upvalueindex(3));
return push_captures(&ms, src, e);
}
}
return 0; /* not found */
}
static int gfind (lua_State *L) {
luaL_check_string(L, 1);
luaL_check_string(L, 2);
lua_settop(L, 2);
lua_pushnumber(L, 0);
lua_pushcclosure(L, gfind_aux, 3);
return 1;
}
static void add_s (MatchState *ms, luaL_Buffer *b,
const char *s, const char *e) {
lua_State *L = ms->L;
if (lua_isstring(L, 3)) {
const char *news = lua_tostring(L, 3);
size_t l = lua_strlen(L, 3);
size_t i;
for (i=0; i<l; i++) {
if (news[i] != ESC)
luaL_putchar(b, news[i]);
else {
i++; /* skip ESC */
if (!isdigit(uchar(news[i])))
luaL_putchar(b, news[i]);
else {
int level = check_capture(ms, news[i]);
push_onecapture(ms, level);
luaL_addvalue(b); /* add capture to accumulated result */
}
}
}
}
else { /* is a function */
int n;
lua_pushvalue(L, 3);
n = push_captures(ms, s, e);
lua_call(L, n, 1);
if (lua_isstring(L, -1))
luaL_addvalue(b); /* add return to accumulated result */
else
lua_pop(L, 1); /* function result is not a string: pop it */
}
}
static int str_gsub (lua_State *L) {
size_t srcl;
const char *src = luaL_check_lstr(L, 1, &srcl);
const char *p = luaL_check_string(L, 2);
int max_s = luaL_opt_int(L, 4, srcl+1);
int anchor = (*p == '^') ? (p++, 1) : 0;
int n = 0;
MatchState ms;
luaL_Buffer b;
luaL_arg_check(L,
lua_gettop(L) >= 3 && (lua_isstring(L, 3) || lua_isfunction(L, 3)),
3, "string or function expected");
luaL_buffinit(L, &b);
ms.L = L;
ms.src_init = src;
ms.src_end = src+srcl;
while (n < max_s) {
const char *e;
ms.level = 0;
e = match(&ms, src, p);
if (e) {
n++;
add_s(&ms, &b, src, e);
}
if (e && e>src) /* non empty match? */
src = e; /* skip it */
else if (src < ms.src_end)
luaL_putchar(&b, *src++);
else break;
if (anchor) break;
}
luaL_addlstring(&b, src, ms.src_end-src);
luaL_pushresult(&b);
lua_pushnumber(L, n); /* number of substitutions */
return 2;
}
/* }====================================================== */
/* maximum size of each formatted item (> len(format('%99.99f', -1e308))) */
#define MAX_ITEM 512
/* maximum size of each format specification (such as '%-099.99d') */
#define MAX_FORMAT 20
static void luaI_addquoted (lua_State *L, luaL_Buffer *b, int arg) {
size_t l;
const char *s = luaL_check_lstr(L, arg, &l);
luaL_putchar(b, '"');
while (l--) {
switch (*s) {
case '"': case '\\': case '\n':
luaL_putchar(b, '\\');
luaL_putchar(b, *s);
break;
case '\0': luaL_addlstring(b, "\\000", 4); break;
default: luaL_putchar(b, *s);
}
s++;
}
luaL_putchar(b, '"');
}
static const char *scanformat (lua_State *L, const char *strfrmt,
char *form, int *hasprecision) {
const char *p = strfrmt;
while (strchr("-+ #0", *p)) p++; /* skip flags */
if (isdigit(uchar(*p))) p++; /* skip width */
if (isdigit(uchar(*p))) p++; /* (2 digits at most) */
if (*p == '.') {
p++;
*hasprecision = 1;
if (isdigit(uchar(*p))) p++; /* skip precision */
if (isdigit(uchar(*p))) p++; /* (2 digits at most) */
}
if (isdigit(uchar(*p)))
luaL_error(L, "invalid format (width or precision too long)");
if (p-strfrmt+2 > MAX_FORMAT) /* +2 to include `%' and the specifier */
luaL_error(L, "invalid format (too long)");
form[0] = '%';
strncpy(form+1, strfrmt, p-strfrmt+1);
form[p-strfrmt+2] = 0;
return p;
}
static int str_format (lua_State *L) {
int arg = 1;
size_t sfl;
const char *strfrmt = luaL_check_lstr(L, arg, &sfl);
const char *strfrmt_end = strfrmt+sfl;
luaL_Buffer b;
luaL_buffinit(L, &b);
while (strfrmt < strfrmt_end) {
if (*strfrmt != '%')
luaL_putchar(&b, *strfrmt++);
else if (*++strfrmt == '%')
luaL_putchar(&b, *strfrmt++); /* %% */
else { /* format item */
char form[MAX_FORMAT]; /* to store the format (`%...') */
char buff[MAX_ITEM]; /* to store the formatted item */
int hasprecision = 0;
if (isdigit(uchar(*strfrmt)) && *(strfrmt+1) == '$')
return luaL_error(L, "obsolete `format' option (d$)");
arg++;
strfrmt = scanformat(L, strfrmt, form, &hasprecision);
switch (*strfrmt++) {
case 'c': case 'd': case 'i':
sprintf(buff, form, luaL_check_int(L, arg));
break;
case 'o': case 'u': case 'x': case 'X':
sprintf(buff, form, (unsigned int)(luaL_check_number(L, arg)));
break;
case 'e': case 'E': case 'f':
case 'g': case 'G':
sprintf(buff, form, luaL_check_number(L, arg));
break;
case 'q':
luaI_addquoted(L, &b, arg);
continue; /* skip the `addsize' at the end */
case 's': {
size_t l;
const char *s = luaL_check_lstr(L, arg, &l);
if (!hasprecision && l >= 100) {
/* no precision and string is too long to be formatted;
keep original string */
lua_pushvalue(L, arg);
luaL_addvalue(&b);
continue; /* skip the `addsize' at the end */
}
else {
sprintf(buff, form, s);
break;
}
}
default: /* also treat cases `pnLlh' */
return luaL_error(L, "invalid option in `format'");
}
luaL_addlstring(&b, buff, strlen(buff));
}
}
luaL_pushresult(&b);
return 1;
}
static const luaL_reg strlib[] = {
{"len", str_len},
{"sub", str_sub},
{"lower", str_lower},
{"upper", str_upper},
{"char", str_char},
{"rep", str_rep},
{"byte", str_byte},
{"format", str_format},
{"find", str_find},
{"gfind", gfind},
{"gsub", str_gsub},
{NULL, NULL}
};
/*
** Open string library
*/
LUALIB_API int lua_strlibopen (lua_State *L) {
luaL_opennamedlib(L, LUA_STRLIBNAME, strlib, 0);
return 0;
}

489
ltable.c
View File

@@ -1,489 +0,0 @@
/*
** $Id: ltable.c,v 1.115 2002/08/05 14:45:32 roberto Exp roberto $
** Lua tables (hash)
** See Copyright Notice in lua.h
*/
/*
** Implementation of tables (aka arrays, objects, or hash tables).
** Tables keep its elements in two parts: an array part and a hash part.
** Non-negative integer keys are all candidates to be kept in the array
** part. The actual size of the array is the largest `n' such that at
** least half the slots between 0 and n are in use.
** Hash uses a mix of chained scatter table with Brent's variation.
** A main invariant of these tables is that, if an element is not
** in its main position (i.e. the `original' position that its hash gives
** to it), then the colliding element is in its own main position.
** In other words, there are collisions only when two elements have the
** same main position (i.e. the same hash values for that table size).
** Because of that, the load factor of these tables can be 100% without
** performance penalties.
*/
#include "lua.h"
#include "ldebug.h"
#include "ldo.h"
#include "lmem.h"
#include "lobject.h"
#include "lstate.h"
#include "ltable.h"
/*
** max size of array part is 2^MAXBITS
*/
#if BITS_INT > 26
#define MAXBITS 24
#else
#define MAXBITS (BITS_INT-2)
#endif
/* check whether `x' < 2^MAXBITS */
#define toobig(x) ((((x)-1) >> MAXBITS) != 0)
/* function to convert a lua_Number to int (with any rounding method) */
#ifndef lua_number2int
#define lua_number2int(i,n) ((i)=(int)(n))
#endif
#define hashnum(t,n) \
(node(t, lmod(cast(lu_hash, cast(ls_hash, n)), sizenode(t))))
#define hashstr(t,str) (node(t, lmod((str)->tsv.hash, sizenode(t))))
#define hashboolean(t,p) (node(t, lmod(p, sizenode(t))))
/*
** avoid modulus by power of 2 for pointers, as they tend to have many
** 2 factors.
*/
#define hashpointer(t,p) (node(t, (IntPoint(p) % ((sizenode(t)-1)|1))))
/*
** returns the `main' position of an element in a table (that is, the index
** of its hash value)
*/
Node *luaH_mainposition (const Table *t, const TObject *key) {
switch (ttype(key)) {
case LUA_TNUMBER: {
int ikey;
lua_number2int(ikey, nvalue(key));
return hashnum(t, ikey);
}
case LUA_TSTRING:
return hashstr(t, tsvalue(key));
case LUA_TBOOLEAN:
return hashboolean(t, bvalue(key));
case LUA_TLIGHTUSERDATA:
return hashpointer(t, pvalue(key));
case LUA_TUSERDATA:
return hashpointer(t, uvalue(key));
case LUA_TFUNCTION:
return hashpointer(t, clvalue(key));
case LUA_TTABLE:
return hashpointer(t, hvalue(key));
}
lua_assert(0);
return 0; /* to avoid warnings */
}
/*
** returns the index for `key' if `key' is an appropriate key to live in
** the array part of the table, -1 otherwise.
*/
static int arrayindex (const TObject *key) {
if (ttisnumber(key)) {
int k;
lua_number2int(k, (nvalue(key)));
if (cast(lua_Number, k) == nvalue(key) && k >= 1 && !toobig(k))
return k;
}
return -1; /* `key' did not match some condition */
}
/*
** returns the index of a `key' for table traversals. First goes all
** elements in the array part, then elements in the hash part. The
** beginning and end of a traversal are signalled by -1.
*/
static int luaH_index (lua_State *L, Table *t, const TObject *key) {
int i;
if (ttisnil(key)) return -1; /* first iteration */
i = arrayindex(key);
if (0 <= i && i <= t->sizearray) { /* is `key' inside array part? */
return i-1; /* yes; that's the index (corrected to C) */
}
else {
const TObject *v = luaH_get(t, key);
if (v == &luaO_nilobject)
luaG_runerror(L, "invalid key for `next'");
i = cast(int, (cast(const lu_byte *, v) -
cast(const lu_byte *, val(node(t, 0)))) / sizeof(Node));
return i + t->sizearray; /* hash elements are numbered after array ones */
}
}
int luaH_next (lua_State *L, Table *t, TObject *key) {
int i = luaH_index(L, t, key); /* find original element */
for (i++; i < t->sizearray; i++) { /* try first array part */
if (!ttisnil(&t->array[i])) { /* a non-nil value? */
setnvalue(key, i+1);
setobj(key+1, &t->array[i]);
return 1;
}
}
for (i -= t->sizearray; i < sizenode(t); i++) { /* then hash part */
if (!ttisnil(val(node(t, i)))) { /* a non-nil value? */
setobj(key, key(node(t, i)));
setobj(key+1, val(node(t, i)));
return 1;
}
}
return 0; /* no more elements */
}
/*
** {=============================================================
** Rehash
** ==============================================================
*/
static void computesizes (int nums[], int ntotal, int *narray, int *nhash) {
int i;
int a = nums[0]; /* number of elements smaller than 2^i */
int na = a; /* number of elements to go to array part */
int n = (na == 0) ? -1 : 0; /* (log of) optimal size for array part */
for (i = 1; i <= MAXBITS && *narray >= twoto(i-1); i++) {
if (nums[i] > 0) {
a += nums[i];
if (a >= twoto(i-1)) { /* more than half elements in use? */
n = i;
na = a;
}
}
}
lua_assert(na <= *narray && *narray <= ntotal);
*nhash = ntotal - na;
*narray = (n == -1) ? 0 : twoto(n);
lua_assert(na <= *narray && na >= *narray/2);
}
static void numuse (const Table *t, int *narray, int *nhash) {
int nums[MAXBITS+1];
int i;
int totaluse = 0;
for (i=0; i<=MAXBITS; i++) nums[i] = 0; /* init `nums' */
/* count elements in array part */
i = luaO_log2(t->sizearray) + 1; /* number of `slices' */
while (i--) { /* for each slice [2^(i-1) to 2^i) */
int to = twoto(i);
int from = to/2;
if (to > t->sizearray) to = t->sizearray;
for (; from < to; from++)
if (!ttisnil(&t->array[from])) {
nums[i]++;
totaluse++;
}
}
*narray = totaluse; /* all previous uses were in array part */
/* count elements in hash part */
i = sizenode(t);
while (i--) {
if (!ttisnil(val(&t->node[i]))) {
int k = arrayindex(key(&t->node[i]));
if (k >= 0) { /* is `key' an appropriate array index? */
nums[luaO_log2(k-1)+1]++; /* count as such */
(*narray)++;
}
totaluse++;
}
}
computesizes(nums, totaluse, narray, nhash);
}
static void setarrayvector (lua_State *L, Table *t, int size) {
int i;
luaM_reallocvector(L, t->array, t->sizearray, size, TObject);
for (i=t->sizearray; i<size; i++)
setnilvalue(&t->array[i]);
t->sizearray = size;
}
static void setnodevector (lua_State *L, Table *t, int lsize) {
int i;
int size = twoto(lsize);
if (lsize > MAXBITS)
luaG_runerror(L, "table overflow");
if (lsize == 0) { /* no elements to hash part? */
t->node = G(L)->dummynode; /* use common `dummynode' */
lua_assert(ttisnil(key(t->node))); /* assert invariants: */
lua_assert(ttisnil(val(t->node)));
lua_assert(t->node->next == NULL); /* (`dummynode' must be empty) */
}
else {
t->node = luaM_newvector(L, size, Node);
for (i=0; i<size; i++) {
t->node[i].next = NULL;
setnilvalue(key(node(t, i)));
setnilvalue(val(node(t, i)));
}
}
t->lsizenode = cast(lu_byte, lsize);
t->firstfree = node(t, size-1); /* first free position to be used */
}
static void resize (lua_State *L, Table *t, int nasize, int nhsize) {
int i;
int oldasize = t->sizearray;
int oldhsize = t->lsizenode;
Node *nold;
Node temp[1];
if (oldhsize)
nold = t->node; /* save old hash ... */
else { /* old hash is `dummynode' */
lua_assert(t->node == G(L)->dummynode);
temp[0] = t->node[0]; /* copy it to `temp' */
nold = temp;
setnilvalue(key(G(L)->dummynode)); /* restate invariant */
setnilvalue(val(G(L)->dummynode));
lua_assert(G(L)->dummynode->next == NULL);
}
if (nasize > oldasize) /* array part must grow? */
setarrayvector(L, t, nasize);
/* create new hash part with appropriate size */
setnodevector(L, t, nhsize);
/* re-insert elements */
if (nasize < oldasize) { /* array part must shrink? */
t->sizearray = nasize;
/* re-insert elements from vanishing slice */
for (i=nasize; i<oldasize; i++) {
if (!ttisnil(&t->array[i]))
setobj(luaH_setnum(L, t, i+1), &t->array[i]);
}
/* shrink array */
luaM_reallocvector(L, t->array, oldasize, nasize, TObject);
}
/* re-insert elements in hash part */
for (i = twoto(oldhsize) - 1; i >= 0; i--) {
Node *old = nold+i;
if (!ttisnil(val(old)))
setobj(luaH_set(L, t, key(old)), val(old));
}
if (oldhsize)
luaM_freearray(L, nold, twoto(oldhsize), Node); /* free old array */
}
static void rehash (lua_State *L, Table *t) {
int nasize, nhsize;
numuse(t, &nasize, &nhsize); /* compute new sizes for array and hash parts */
resize(L, t, nasize, luaO_log2(nhsize)+1);
}
/*
** }=============================================================
*/
Table *luaH_new (lua_State *L, int narray, int lnhash) {
Table *t = luaM_new(L, Table);
t->metatable = hvalue(defaultmeta(L));
t->next = G(L)->roottable;
G(L)->roottable = t;
t->mark = t;
t->flags = cast(lu_byte, ~0);
t->mode = 0;
/* temporary values (kept only if some malloc fails) */
t->array = NULL;
t->sizearray = 0;
t->lsizenode = 0;
t->node = NULL;
setarrayvector(L, t, narray);
setnodevector(L, t, lnhash);
return t;
}
void luaH_free (lua_State *L, Table *t) {
if (t->lsizenode)
luaM_freearray(L, t->node, sizenode(t), Node);
luaM_freearray(L, t->array, t->sizearray, TObject);
luaM_freelem(L, t);
}
#if 0
/*
** try to remove an element from a hash table; cannot move any element
** (because gc can call `remove' during a table traversal)
*/
void luaH_remove (Table *t, Node *e) {
Node *mp = luaH_mainposition(t, key(e));
if (e != mp) { /* element not in its main position? */
while (mp->next != e) mp = mp->next; /* find previous */
mp->next = e->next; /* remove `e' from its list */
}
else {
if (e->next != NULL) ??
}
lua_assert(ttisnil(val(node)));
setnilvalue(key(e)); /* clear node `e' */
e->next = NULL;
}
#endif
/*
** inserts a new key into a hash table; first, check whether key's main
** position is free. If not, check whether colliding node is in its main
** position or not: if it is not, move colliding node to an empty place and
** put new key in its main position; otherwise (colliding node is in its main
** position), new key goes to an empty position.
*/
static TObject *newkey (lua_State *L, Table *t, const TObject *key) {
TObject *val;
Node *mp = luaH_mainposition(t, key);
if (!ttisnil(val(mp))) { /* main position is not free? */
Node *othern = luaH_mainposition(t, key(mp)); /* `mp' of colliding node */
Node *n = t->firstfree; /* get a free place */
if (othern != mp) { /* is colliding node out of its main position? */
/* yes; move colliding node into free position */
while (othern->next != mp) othern = othern->next; /* find previous */
othern->next = n; /* redo the chain with `n' in place of `mp' */
*n = *mp; /* copy colliding node into free pos. (mp->next also goes) */
mp->next = NULL; /* now `mp' is free */
setnilvalue(val(mp));
}
else { /* colliding node is in its own main position */
/* new node will go into free position */
n->next = mp->next; /* chain new position */
mp->next = n;
mp = n;
}
}
setobj(key(mp), key);
lua_assert(ttisnil(val(mp)));
for (;;) { /* correct `firstfree' */
if (ttisnil(key(t->firstfree)))
return val(mp); /* OK; table still has a free place */
else if (t->firstfree == t->node) break; /* cannot decrement from here */
else (t->firstfree)--;
}
/* no more free places; must create one */
setbvalue(val(mp), 0); /* avoid new key being removed */
rehash(L, t); /* grow table */
val = cast(TObject *, luaH_get(t, key)); /* get new position */
lua_assert(ttisboolean(val));
setnilvalue(val);
return val;
}
/*
** generic search function
*/
static const TObject *luaH_getany (Table *t, const TObject *key) {
if (ttisnil(key)) return &luaO_nilobject;
else {
Node *n = luaH_mainposition(t, key);
do { /* check whether `key' is somewhere in the chain */
if (luaO_rawequalObj(key(n), key)) return val(n); /* that's it */
else n = n->next;
} while (n);
return &luaO_nilobject;
}
}
/*
** search function for integers
*/
const TObject *luaH_getnum (Table *t, int key) {
if (1 <= key && key <= t->sizearray)
return &t->array[key-1];
else {
Node *n = hashnum(t, key);
do { /* check whether `key' is somewhere in the chain */
if (ttisnumber(key(n)) && nvalue(key(n)) == (lua_Number)key)
return val(n); /* that's it */
else n = n->next;
} while (n);
return &luaO_nilobject;
}
}
/*
** search function for strings
*/
const TObject *luaH_getstr (Table *t, TString *key) {
Node *n = hashstr(t, key);
do { /* check whether `key' is somewhere in the chain */
if (ttisstring(key(n)) && tsvalue(key(n)) == key)
return val(n); /* that's it */
else n = n->next;
} while (n);
return &luaO_nilobject;
}
/*
** main search function
*/
const TObject *luaH_get (Table *t, const TObject *key) {
switch (ttype(key)) {
case LUA_TSTRING: return luaH_getstr(t, tsvalue(key));
case LUA_TNUMBER: {
int k;
lua_number2int(k, (nvalue(key)));
if (cast(lua_Number, k) == nvalue(key)) /* is an integer index? */
return luaH_getnum(t, k); /* use specialized version */
/* else go through */
}
default: return luaH_getany(t, key);
}
}
TObject *luaH_set (lua_State *L, Table *t, const TObject *key) {
const TObject *p = luaH_get(t, key);
t->flags = 0;
if (p != &luaO_nilobject)
return cast(TObject *, p);
else {
if (ttisnil(key)) luaG_runerror(L, "table index is nil");
else if (ttisnumber(key) && nvalue(key) != nvalue(key))
luaG_runerror(L, "table index is NaN");
return newkey(L, t, key);
}
}
TObject *luaH_setnum (lua_State *L, Table *t, int key) {
const TObject *p = luaH_getnum(t, key);
if (p != &luaO_nilobject)
return cast(TObject *, p);
else {
TObject k;
setnvalue(&k, key);
return newkey(L, t, &k);
}
}

View File

@@ -1,31 +0,0 @@
/*
** $Id: ltable.h,v 1.41 2002/03/11 12:45:00 roberto Exp roberto $
** Lua tables (hash)
** See Copyright Notice in lua.h
*/
#ifndef ltable_h
#define ltable_h
#include "lobject.h"
#define node(t,i) (&(t)->node[i])
#define key(n) (&(n)->i_key)
#define val(n) (&(n)->i_val)
const TObject *luaH_getnum (Table *t, int key);
TObject *luaH_setnum (lua_State *L, Table *t, int key);
const TObject *luaH_getstr (Table *t, TString *key);
const TObject *luaH_get (Table *t, const TObject *key);
TObject *luaH_set (lua_State *L, Table *t, const TObject *key);
Table *luaH_new (lua_State *L, int narray, int lnhash);
void luaH_free (lua_State *L, Table *t);
int luaH_next (lua_State *L, Table *t, TObject *key);
/* exported only for debugging */
Node *luaH_mainposition (const Table *t, const TObject *key);
#endif

294
ltablib.c
View File

@@ -1,294 +0,0 @@
/*
** $Id: ltablib.c,v 1.11 2002/08/06 17:06:56 roberto Exp roberto $
** Library for Table Manipulation
** See Copyright Notice in lua.h
*/
#include <stddef.h>
#include "lua.h"
#include "lauxlib.h"
#include "lualib.h"
static int checkint (lua_State *L) {
int n = (int)lua_tonumber(L, -1);
if (n == 0 && !lua_isnumber(L, -1)) n = -1;
lua_pop(L, 1);
return n;
}
static void aux_setn (lua_State *L, int t, int n) {
lua_pushliteral(L, "n");
lua_rawget(L, t);
if (checkint(L) >= 0) {
lua_pushliteral(L, "n"); /* use it */
lua_pushnumber(L, n);
lua_rawset(L, t);
}
else { /* use N */
lua_pushvalue(L, t);
lua_pushnumber(L, n);
lua_rawset(L, lua_upvalueindex(1)); /* N[t] = n */
}
}
static int aux_getn (lua_State *L, int t) {
int n;
luaL_check_type(L, t, LUA_TTABLE);
lua_pushliteral(L, "n"); /* try t.n */
lua_rawget(L, t);
if ((n = checkint(L)) >= 0) return n;
lua_pushvalue(L, t); /* try N[t] */
lua_rawget(L, lua_upvalueindex(1));
if ((n = checkint(L)) >= 0) return n;
else { /* must count elements */
n = 0;
for (;;) {
lua_rawgeti(L, t, ++n);
if (lua_isnil(L, -1)) break;
lua_pop(L, 1);
}
lua_pop(L, 1);
aux_setn(L, t, n - 1);
return n - 1;
}
}
static int luaB_foreachi (lua_State *L) {
int i;
int n = aux_getn(L, 1);
luaL_check_type(L, 2, LUA_TFUNCTION);
for (i=1; i<=n; i++) {
lua_pushvalue(L, 2); /* function */
lua_pushnumber(L, i); /* 1st argument */
lua_rawgeti(L, 1, i); /* 2nd argument */
lua_call(L, 2, 1);
if (!lua_isnil(L, -1))
return 1;
lua_pop(L, 1); /* remove nil result */
}
return 0;
}
static int luaB_foreach (lua_State *L) {
luaL_check_type(L, 1, LUA_TTABLE);
luaL_check_type(L, 2, LUA_TFUNCTION);
lua_pushnil(L); /* first key */
for (;;) {
if (lua_next(L, 1) == 0)
return 0;
lua_pushvalue(L, 2); /* function */
lua_pushvalue(L, -3); /* key */
lua_pushvalue(L, -3); /* value */
lua_call(L, 2, 1);
if (!lua_isnil(L, -1))
return 1;
lua_pop(L, 2); /* remove value and result */
}
}
static int luaB_getn (lua_State *L) {
lua_pushnumber(L, aux_getn(L, 1));
return 1;
}
static int luaB_setn (lua_State *L) {
luaL_check_type(L, 1, LUA_TTABLE);
aux_setn(L, 1, luaL_check_int(L, 2));
return 0;
}
static int luaB_tinsert (lua_State *L) {
int v = lua_gettop(L); /* number of arguments */
int n = aux_getn(L, 1) + 1;
int pos; /* where to insert new element */
if (v == 2) /* called with only 2 arguments */
pos = n; /* insert new element at the end */
else {
pos = luaL_check_int(L, 2); /* 2nd argument is the position */
if (pos > n) n = pos; /* `grow' array if necessary */
v = 3; /* function may be called with more than 3 args */
}
aux_setn(L, 1, n); /* new size */
while (--n >= pos) { /* move up elements */
lua_rawgeti(L, 1, n);
lua_rawseti(L, 1, n+1); /* t[n+1] = t[n] */
}
lua_pushvalue(L, v);
lua_rawseti(L, 1, pos); /* t[pos] = v */
return 0;
}
static int luaB_tremove (lua_State *L) {
int n = aux_getn(L, 1);
int pos = luaL_opt_int(L, 2, n);
if (n <= 0) return 0; /* table is `empty' */
aux_setn(L, 1, n-1); /* t.n = n-1 */
lua_rawgeti(L, 1, pos); /* result = t[pos] */
for ( ;pos<n; pos++) {
lua_rawgeti(L, 1, pos+1);
lua_rawseti(L, 1, pos); /* t[pos] = t[pos+1] */
}
lua_pushnil(L);
lua_rawseti(L, 1, n); /* t[n] = nil */
return 1;
}
static int str_concat (lua_State *L) {
luaL_Buffer b;
int n = aux_getn(L, 1);
size_t lsep;
const char *sep = luaL_opt_lstr(L, 2, "", &lsep);
int i;
luaL_buffinit(L, &b);
for (i=1; i<=n; i++) {
lua_rawgeti(L, 1, i);
luaL_arg_check(L, lua_isstring(L, -1), 1,
"table contains non-strings");
luaL_addvalue(&b);
if (i != n)
luaL_addlstring(&b, sep, lsep);
}
luaL_pushresult(&b);
return 1;
}
/*
** {======================================================
** Quicksort
** (based on `Algorithms in MODULA-3', Robert Sedgewick;
** Addison-Wesley, 1993.)
*/
static void set2 (lua_State *L, int i, int j) {
lua_rawseti(L, 1, i);
lua_rawseti(L, 1, j);
}
static int sort_comp (lua_State *L, int a, int b) {
if (!lua_isnil(L, 2)) { /* function? */
int res;
lua_pushvalue(L, 2);
lua_pushvalue(L, a-1); /* -1 to compensate function */
lua_pushvalue(L, b-2); /* -2 to compensate function and `a' */
lua_call(L, 2, 1);
res = lua_toboolean(L, -1);
lua_pop(L, 1);
return res;
}
else /* a < b? */
return lua_lessthan(L, a, b);
}
static void auxsort (lua_State *L, int l, int u) {
while (l < u) { /* for tail recursion */
int i, j;
/* sort elements a[l], a[(l+u)/2] and a[u] */
lua_rawgeti(L, 1, l);
lua_rawgeti(L, 1, u);
if (sort_comp(L, -1, -2)) /* a[u] < a[l]? */
set2(L, l, u); /* swap a[l] - a[u] */
else
lua_pop(L, 2);
if (u-l == 1) break; /* only 2 elements */
i = (l+u)/2;
lua_rawgeti(L, 1, i);
lua_rawgeti(L, 1, l);
if (sort_comp(L, -2, -1)) /* a[i]<a[l]? */
set2(L, i, l);
else {
lua_pop(L, 1); /* remove a[l] */
lua_rawgeti(L, 1, u);
if (sort_comp(L, -1, -2)) /* a[u]<a[i]? */
set2(L, i, u);
else
lua_pop(L, 2);
}
if (u-l == 2) break; /* only 3 elements */
lua_rawgeti(L, 1, i); /* Pivot */
lua_pushvalue(L, -1);
lua_rawgeti(L, 1, u-1);
set2(L, i, u-1);
/* a[l] <= P == a[u-1] <= a[u], only need to sort from l+1 to u-2 */
i = l; j = u-1;
for (;;) { /* invariant: a[l..i] <= P <= a[j..u] */
/* repeat ++i until a[i] >= P */
while (lua_rawgeti(L, 1, ++i), sort_comp(L, -1, -2)) {
if (i>u) luaL_error(L, "invalid order function for sorting");
lua_pop(L, 1); /* remove a[i] */
}
/* repeat --j until a[j] <= P */
while (lua_rawgeti(L, 1, --j), sort_comp(L, -3, -1)) {
if (j<l) luaL_error(L, "invalid order function for sorting");
lua_pop(L, 1); /* remove a[j] */
}
if (j<i) {
lua_pop(L, 3); /* pop pivot, a[i], a[j] */
break;
}
set2(L, i, j);
}
lua_rawgeti(L, 1, u-1);
lua_rawgeti(L, 1, i);
set2(L, u-1, i); /* swap pivot (a[u-1]) with a[i] */
/* a[l..i-1] <= a[i] == P <= a[i+1..u] */
/* adjust so that smaller half is in [j..i] and larger one in [l..u] */
if (i-l < u-i) {
j=l; i=i-1; l=i+2;
}
else {
j=i+1; i=u; u=j-2;
}
auxsort(L, j, i); /* call recursively the smaller one */
} /* repeat the routine for the larger one */
}
static int luaB_sort (lua_State *L) {
int n = aux_getn(L, 1);
luaL_check_stack(L, 40, ""); /* assume array is smaller than 2^40 */
if (!lua_isnoneornil(L, 2)) /* is there a 2nd argument? */
luaL_check_type(L, 2, LUA_TFUNCTION);
lua_settop(L, 2); /* make sure there is two arguments */
auxsort(L, 1, n);
return 0;
}
/* }====================================================== */
static const luaL_reg tab_funcs[] = {
{"concat", str_concat},
{"foreach", luaB_foreach},
{"foreachi", luaB_foreachi},
{"getn", luaB_getn},
{"setn", luaB_setn},
{"sort", luaB_sort},
{"insert", luaB_tinsert},
{"remove", luaB_tremove},
{NULL, NULL}
};
LUALIB_API int lua_tablibopen (lua_State *L) {
lua_newtable(L); /* create N (table to store num. elements in tables) */
lua_setmode(L, -1, "k"); /* make it a weak table */
luaL_opennamedlib(L, LUA_TABLIBNAME, tab_funcs, 1);
return 0;
}

722
ltests.c
View File

@@ -1,722 +0,0 @@
/*
** $Id: ltests.c,v 1.132 2002/08/06 15:32:22 roberto Exp roberto $
** Internal Module for Debugging of the Lua Implementation
** See Copyright Notice in lua.h
*/
#include <ctype.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "lua.h"
#include "lapi.h"
#include "lauxlib.h"
#include "lcode.h"
#include "ldebug.h"
#include "ldo.h"
#include "lfunc.h"
#include "lmem.h"
#include "lopcodes.h"
#include "lstate.h"
#include "lstring.h"
#include "ltable.h"
#include "lualib.h"
/*
** The whole module only makes sense with LUA_DEBUG on
*/
#ifdef LUA_DEBUG
static lua_State *lua_state = NULL;
int islocked = 0;
#define index(L,k) (L->ci->base+(k) - 1)
static void setnameval (lua_State *L, const char *name, int val) {
lua_pushstring(L, name);
lua_pushnumber(L, val);
lua_settable(L, -3);
}
/*
** {======================================================================
** Controlled version for realloc.
** =======================================================================
*/
/* ensures maximum alignment for HEADER */
#define HEADER (sizeof(union L_Umaxalign))
#define MARKSIZE 32
#define MARK 0x55 /* 01010101 (a nice pattern) */
#define blocksize(b) (cast(size_t *, b) - HEADER/sizeof(size_t))
unsigned long memdebug_numblocks = 0;
unsigned long memdebug_total = 0;
unsigned long memdebug_maxmem = 0;
unsigned long memdebug_memlimit = ULONG_MAX;
static void *checkblock (void *block) {
size_t *b = blocksize(block);
size_t size = *b;
int i;
for (i=0;i<MARKSIZE;i++)
lua_assert(*(cast(char *, b)+HEADER+size+i) == MARK+i); /* corrupted block? */
return b;
}
static void freeblock (void *block) {
if (block) {
size_t size = *blocksize(block);
block = checkblock(block);
memset(block, -1, size+HEADER+MARKSIZE); /* erase block */
free(block); /* free original block */
memdebug_numblocks--;
memdebug_total -= size;
}
}
void *debug_realloc (void *block, size_t oldsize, size_t size) {
lua_assert((oldsize == 0) == (block == NULL));
lua_assert(oldsize == 0 || oldsize == *blocksize(block));
/* ISO does not specify what realloc(NULL, 0) does */
lua_assert(block != NULL || size > 0);
if (size == 0) {
freeblock(block);
return NULL;
}
else if (memdebug_total+size-oldsize > memdebug_memlimit)
return NULL; /* to test memory allocation errors */
else {
void *newblock;
int i;
size_t realsize = HEADER+size+MARKSIZE;
if (realsize < size) return NULL; /* overflow! */
newblock = malloc(realsize); /* alloc a new block */
if (newblock == NULL) return NULL;
if (oldsize > size) oldsize = size;
if (block) {
memcpy(cast(char *, newblock)+HEADER, block, oldsize);
freeblock(block); /* erase (and check) old copy */
}
/* initialize new part of the block with something `weird' */
memset(cast(char *, newblock)+HEADER+oldsize, -MARK, size-oldsize);
memdebug_total += size;
if (memdebug_total > memdebug_maxmem)
memdebug_maxmem = memdebug_total;
memdebug_numblocks++;
*cast(size_t *, newblock) = size;
for (i=0;i<MARKSIZE;i++)
*(cast(char *, newblock)+HEADER+size+i) = cast(char, MARK+i);
return cast(char *, newblock)+HEADER;
}
}
/* }====================================================================== */
/*
** {======================================================
** Disassembler
** =======================================================
*/
static char *buildop (Proto *p, int pc, char *buff) {
Instruction i = p->code[pc];
OpCode o = GET_OPCODE(i);
const char *name = luaP_opnames[o];
int line = getline(p, pc);
sprintf(buff, "(%4d) %4d - ", line, pc);
switch (getOpMode(o)) {
case iABC:
sprintf(buff+strlen(buff), "%-12s%4d %4d %4d", name,
GETARG_A(i), GETARG_B(i), GETARG_C(i));
break;
case iABx:
sprintf(buff+strlen(buff), "%-12s%4d %4d", name, GETARG_A(i), GETARG_Bx(i));
break;
case iAsBx:
sprintf(buff+strlen(buff), "%-12s%4d %4d", name, GETARG_A(i), GETARG_sBx(i));
break;
}
return buff;
}
#if 0
void luaI_printcode (Proto *pt, int size) {
int pc;
for (pc=0; pc<size; pc++) {
char buff[100];
printf("%s\n", buildop(pt, pc, buff));
}
printf("-------\n");
}
#endif
static int listcode (lua_State *L) {
int pc;
Proto *p;
luaL_arg_check(L, lua_isfunction(L, 1) && !lua_iscfunction(L, 1),
1, "Lua function expected");
p = clvalue(index(L, 1))->l.p;
lua_newtable(L);
setnameval(L, "maxstack", p->maxstacksize);
setnameval(L, "numparams", p->numparams);
for (pc=0; pc<p->sizecode; pc++) {
char buff[100];
lua_pushnumber(L, pc+1);
lua_pushstring(L, buildop(p, pc, buff));
lua_settable(L, -3);
}
return 1;
}
static int listk (lua_State *L) {
Proto *p;
int i;
luaL_arg_check(L, lua_isfunction(L, 1) && !lua_iscfunction(L, 1),
1, "Lua function expected");
p = clvalue(index(L, 1))->l.p;
lua_newtable(L);
for (i=0; i<p->sizek; i++) {
lua_pushnumber(L, i+1);
luaA_pushobject(L, p->k+i);
lua_settable(L, -3);
}
return 1;
}
static int listlocals (lua_State *L) {
Proto *p;
int pc = luaL_check_int(L, 2) - 1;
int i = 0;
const char *name;
luaL_arg_check(L, lua_isfunction(L, 1) && !lua_iscfunction(L, 1),
1, "Lua function expected");
p = clvalue(index(L, 1))->l.p;
while ((name = luaF_getlocalname(p, ++i, pc)) != NULL)
lua_pushstring(L, name);
return i-1;
}
/* }====================================================== */
static int get_limits (lua_State *L) {
lua_newtable(L);
setnameval(L, "BITS_INT", BITS_INT);
setnameval(L, "LFPF", LFIELDS_PER_FLUSH);
setnameval(L, "MAXVARS", MAXVARS);
setnameval(L, "MAXPARAMS", MAXPARAMS);
setnameval(L, "MAXSTACK", MAXSTACK);
setnameval(L, "MAXUPVALUES", MAXUPVALUES);
return 1;
}
static int mem_query (lua_State *L) {
if (lua_isnone(L, 1)) {
lua_pushnumber(L, memdebug_total);
lua_pushnumber(L, memdebug_numblocks);
lua_pushnumber(L, memdebug_maxmem);
return 3;
}
else {
memdebug_memlimit = luaL_check_int(L, 1);
return 0;
}
}
static int hash_query (lua_State *L) {
if (lua_isnone(L, 2)) {
luaL_arg_check(L, lua_type(L, 1) == LUA_TSTRING, 1, "string expected");
lua_pushnumber(L, tsvalue(index(L, 1))->tsv.hash);
}
else {
TObject *o = index(L, 1);
Table *t;
luaL_check_type(L, 2, LUA_TTABLE);
t = hvalue(index(L, 2));
lua_pushnumber(L, luaH_mainposition(t, o) - t->node);
}
return 1;
}
static int stacklevel (lua_State *L) {
unsigned long a = 0;
lua_pushnumber(L, (int)(L->top - L->stack));
lua_pushnumber(L, (int)(L->stack_last - L->stack));
lua_pushnumber(L, (int)(L->ci - L->base_ci));
lua_pushnumber(L, (int)(L->end_ci - L->base_ci));
lua_pushnumber(L, (unsigned long)&a);
return 5;
}
static int table_query (lua_State *L) {
const Table *t;
int i = luaL_opt_int(L, 2, -1);
luaL_check_type(L, 1, LUA_TTABLE);
t = hvalue(index(L, 1));
if (i == -1) {
lua_pushnumber(L, t->sizearray);
lua_pushnumber(L, sizenode(t));
lua_pushnumber(L, t->firstfree - t->node);
}
else if (i < t->sizearray) {
lua_pushnumber(L, i);
luaA_pushobject(L, &t->array[i]);
lua_pushnil(L);
}
else if ((i -= t->sizearray) < sizenode(t)) {
if (!ttisnil(val(node(t, i))) ||
ttisnil(key(node(t, i))) ||
ttisnumber(key(node(t, i)))) {
luaA_pushobject(L, key(node(t, i)));
}
else
lua_pushstring(L, "<undef>");
luaA_pushobject(L, val(&t->node[i]));
if (t->node[i].next)
lua_pushnumber(L, t->node[i].next - t->node);
else
lua_pushnil(L);
}
return 3;
}
static int string_query (lua_State *L) {
stringtable *tb = &G(L)->strt;
int s = luaL_opt_int(L, 2, 0) - 1;
if (s==-1) {
lua_pushnumber(L ,tb->nuse);
lua_pushnumber(L ,tb->size);
return 2;
}
else if (s < tb->size) {
TString *ts;
int n = 0;
for (ts = tb->hash[s]; ts; ts = ts->tsv.nexthash) {
setsvalue(L->top, ts);
incr_top(L);
n++;
}
return n;
}
return 0;
}
static int tref (lua_State *L) {
int level = lua_gettop(L);
int lock = luaL_opt_int(L, 2, 1);
luaL_check_any(L, 1);
lua_pushvalue(L, 1);
lua_pushnumber(L, lua_ref(L, lock));
assert(lua_gettop(L) == level+1); /* +1 for result */
return 1;
}
static int getref (lua_State *L) {
int level = lua_gettop(L);
lua_getref(L, luaL_check_int(L, 1));
assert(lua_gettop(L) == level+1);
return 1;
}
static int unref (lua_State *L) {
int level = lua_gettop(L);
lua_unref(L, luaL_check_int(L, 1));
assert(lua_gettop(L) == level);
return 0;
}
static int metatable (lua_State *L) {
luaL_check_any(L, 1);
if (lua_isnone(L, 2)) {
if (lua_getmetatable(L, 1) == 0)
lua_pushnil(L);
}
else {
lua_settop(L, 2);
luaL_check_type(L, 2, LUA_TTABLE);
lua_setmetatable(L, 1);
}
return 1;
}
static int newuserdata (lua_State *L) {
size_t size = luaL_check_int(L, 1);
char *p = cast(char *, lua_newuserdata(L, size));
while (size--) *p++ = '\0';
return 1;
}
static int pushuserdata (lua_State *L) {
lua_pushlightuserdata(L, cast(void *, luaL_check_int(L, 1)));
return 1;
}
static int udataval (lua_State *L) {
lua_pushnumber(L, cast(int, lua_touserdata(L, 1)));
return 1;
}
static int doonnewstack (lua_State *L) {
lua_State *L1 = lua_newthread(L);
size_t l;
const char *s = luaL_check_lstr(L, 1, &l);
int status = luaL_loadbuffer(L1, s, l, s);
if (status == 0)
status = lua_pcall(L1, 0, 0, 0);
lua_pushnumber(L, status);
lua_closethread(L, L1);
return 1;
}
static int s2d (lua_State *L) {
lua_pushnumber(L, *cast(const double *, luaL_check_string(L, 1)));
return 1;
}
static int d2s (lua_State *L) {
double d = luaL_check_number(L, 1);
lua_pushlstring(L, cast(char *, &d), sizeof(d));
return 1;
}
static int newstate (lua_State *L) {
lua_State *L1 = lua_open();
if (L1) {
*cast(int **, L1) = &islocked; /* initialize the lock */
lua_pushnumber(L, (unsigned long)L1);
}
else
lua_pushnil(L);
return 1;
}
static int loadlib (lua_State *L) {
lua_State *L1 = cast(lua_State *, cast(unsigned long, luaL_check_number(L, 1)));
lua_register(L1, "mathlibopen", lua_mathlibopen);
lua_register(L1, "strlibopen", lua_strlibopen);
lua_register(L1, "iolibopen", lua_iolibopen);
lua_register(L1, "dblibopen", lua_dblibopen);
lua_register(L1, "baselibopen", lua_baselibopen);
return 0;
}
static int closestate (lua_State *L) {
lua_State *L1 = cast(lua_State *, cast(unsigned long, luaL_check_number(L, 1)));
lua_close(L1);
lua_unlock(L); /* close cannot unlock that */
return 0;
}
static int doremote (lua_State *L) {
lua_State *L1 = cast(lua_State *,cast(unsigned long,luaL_check_number(L, 1)));
size_t lcode;
const char *code = luaL_check_lstr(L, 2, &lcode);
int status;
lua_settop(L1, 0);
status = luaL_loadbuffer(L1, code, lcode, code);
if (status == 0)
status = lua_pcall(L1, 0, LUA_MULTRET, 0);
if (status != 0) {
lua_pushnil(L);
lua_pushnumber(L, status);
return 2;
}
else {
int i = 0;
while (!lua_isnone(L1, ++i))
lua_pushstring(L, lua_tostring(L1, i));
lua_pop(L1, i-1);
return i-1;
}
}
static int log2_aux (lua_State *L) {
lua_pushnumber(L, luaO_log2(luaL_check_int(L, 1)));
return 1;
}
/*
** {======================================================
** function to test the API with C. It interprets a kind of assembler
** language with calls to the API, so the test can be driven by Lua code
** =======================================================
*/
static const char *const delimits = " \t\n,;";
static void skip (const char **pc) {
while (**pc != '\0' && strchr(delimits, **pc)) (*pc)++;
}
static int getnum_aux (lua_State *L, const char **pc) {
int res = 0;
int sig = 1;
skip(pc);
if (**pc == '.') {
res = cast(int, lua_tonumber(L, -1));
lua_pop(L, 1);
(*pc)++;
return res;
}
else if (**pc == '-') {
sig = -1;
(*pc)++;
}
while (isdigit(cast(int, **pc))) res = res*10 + (*(*pc)++) - '0';
return sig*res;
}
static const char *getname_aux (char *buff, const char **pc) {
int i = 0;
skip(pc);
while (**pc != '\0' && !strchr(delimits, **pc))
buff[i++] = *(*pc)++;
buff[i] = '\0';
return buff;
}
#define EQ(s1) (strcmp(s1, inst) == 0)
#define getnum (getnum_aux(L, &pc))
#define getname (getname_aux(buff, &pc))
static int testC (lua_State *L) {
char buff[30];
const char *pc = luaL_check_string(L, 1);
for (;;) {
const char *inst = getname;
if EQ("") return 0;
else if EQ("isnumber") {
lua_pushnumber(L, lua_isnumber(L, getnum));
}
else if EQ("isstring") {
lua_pushnumber(L, lua_isstring(L, getnum));
}
else if EQ("istable") {
lua_pushnumber(L, lua_istable(L, getnum));
}
else if EQ("iscfunction") {
lua_pushnumber(L, lua_iscfunction(L, getnum));
}
else if EQ("isfunction") {
lua_pushnumber(L, lua_isfunction(L, getnum));
}
else if EQ("isuserdata") {
lua_pushnumber(L, lua_isuserdata(L, getnum));
}
else if EQ("isudataval") {
lua_pushnumber(L, lua_islightuserdata(L, getnum));
}
else if EQ("isnil") {
lua_pushnumber(L, lua_isnil(L, getnum));
}
else if EQ("isnull") {
lua_pushnumber(L, lua_isnone(L, getnum));
}
else if EQ("tonumber") {
lua_pushnumber(L, lua_tonumber(L, getnum));
}
else if EQ("tostring") {
const char *s = lua_tostring(L, getnum);
lua_pushstring(L, s);
}
else if EQ("tonumber") {
lua_pushnumber(L, lua_tonumber(L, getnum));
}
else if EQ("strlen") {
lua_pushnumber(L, lua_strlen(L, getnum));
}
else if EQ("tocfunction") {
lua_pushcfunction(L, lua_tocfunction(L, getnum));
}
else if EQ("return") {
return getnum;
}
else if EQ("gettop") {
lua_pushnumber(L, lua_gettop(L));
}
else if EQ("settop") {
lua_settop(L, getnum);
}
else if EQ("pop") {
lua_pop(L, getnum);
}
else if EQ("pushnum") {
lua_pushnumber(L, getnum);
}
else if EQ("pushnil") {
lua_pushnil(L);
}
else if EQ("pushbool") {
lua_pushboolean(L, getnum);
}
else if EQ("tobool") {
lua_pushnumber(L, lua_toboolean(L, getnum));
}
else if EQ("pushvalue") {
lua_pushvalue(L, getnum);
}
else if EQ("pushcclosure") {
lua_pushcclosure(L, testC, getnum);
}
else if EQ("pushupvalues") {
lua_pushupvalues(L);
}
else if EQ("remove") {
lua_remove(L, getnum);
}
else if EQ("insert") {
lua_insert(L, getnum);
}
else if EQ("replace") {
lua_replace(L, getnum);
}
else if EQ("gettable") {
lua_gettable(L, getnum);
}
else if EQ("settable") {
lua_settable(L, getnum);
}
else if EQ("next") {
lua_next(L, -2);
}
else if EQ("concat") {
lua_concat(L, getnum);
}
else if EQ("lessthan") {
int a = getnum;
lua_pushboolean(L, lua_lessthan(L, a, getnum));
}
else if EQ("equal") {
int a = getnum;
lua_pushboolean(L, lua_equal(L, a, getnum));
}
else if EQ("rawcall") {
int narg = getnum;
int nres = getnum;
lua_call(L, narg, nres);
}
else if EQ("call") {
int narg = getnum;
int nres = getnum;
lua_pcall(L, narg, nres, 0);
}
else if EQ("loadstring") {
size_t sl;
const char *s = luaL_check_lstr(L, getnum, &sl);
luaL_loadbuffer(L, s, sl, s);
}
else if EQ("loadfile") {
luaL_loadfile(L, luaL_check_string(L, getnum));
}
else if EQ("setmetatable") {
lua_setmetatable(L, getnum);
}
else if EQ("getmetatable") {
if (lua_getmetatable(L, getnum) == 0)
lua_pushnil(L);
}
else if EQ("type") {
lua_pushstring(L, lua_typename(L, lua_type(L, getnum)));
}
else luaL_error(L, "unknown instruction %s", buff);
}
return 0;
}
/* }====================================================== */
static const struct luaL_reg tests_funcs[] = {
{"hash", hash_query},
{"limits", get_limits},
{"listcode", listcode},
{"listk", listk},
{"listlocals", listlocals},
{"loadlib", loadlib},
{"stacklevel", stacklevel},
{"querystr", string_query},
{"querytab", table_query},
{"testC", testC},
{"ref", tref},
{"getref", getref},
{"unref", unref},
{"d2s", d2s},
{"s2d", s2d},
{"metatable", metatable},
{"newuserdata", newuserdata},
{"pushuserdata", pushuserdata},
{"udataval", udataval},
{"doonnewstack", doonnewstack},
{"newstate", newstate},
{"closestate", closestate},
{"doremote", doremote},
{"log2", log2_aux},
{"totalmem", mem_query},
{NULL, NULL}
};
static void fim (void) {
if (!islocked)
lua_close(lua_state);
lua_assert(memdebug_numblocks == 0);
lua_assert(memdebug_total == 0);
}
int luaB_opentests (lua_State *L) {
*cast(int **, L) = &islocked; /* init lock */
lua_state = L; /* keep first state to be opened */
luaL_opennamedlib(L, "T", tests_funcs, 0);
atexit(fim);
return 0;
}
#endif

View File

@@ -1,61 +0,0 @@
/*
** $Id: ltests.h,v 1.14 2002/06/13 13:45:31 roberto Exp roberto $
** Internal Header for Debugging of the Lua Implementation
** See Copyright Notice in lua.h
*/
#ifndef ltests_h
#define ltests_h
#include <stdlib.h>
#define LUA_DEBUG
#define LUA_OPNAMES
#undef NDEBUG
#include <assert.h>
#define lua_assert(c) assert(c)
#define check_exp(c,e) (lua_assert(c), (e))
#define api_check(L, o) lua_assert(o)
/* to avoid warnings, and to make sure value is really unused */
#define UNUSED(x) (x=0, (void)(x))
/* memory allocator control variables */
extern unsigned long memdebug_numblocks;
extern unsigned long memdebug_total;
extern unsigned long memdebug_maxmem;
extern unsigned long memdebug_memlimit;
#define l_realloc(b, os, s) debug_realloc(b, os, s)
void *debug_realloc (void *block, size_t oldsize, size_t size);
/* test for lock/unlock */
extern int islocked;
#define LUA_USERSTATE int *lock;
#define lua_userstateopen(l) if (l != NULL) *cast(int **, l) = &islocked;
#define lua_lock(L) lua_assert((**cast(int **, L))++ == 0)
#define lua_unlock(L) lua_assert(--(**cast(int **, L)) == 0)
int luaB_opentests (lua_State *L);
#define lua_userinit(L) (luaB_opentests(L) + openstdlibs(L))
/* change some sizes to give some bugs a chance */
#define LUAL_BUFFERSIZE 27
#define MINSTRTABSIZE 2
#endif

69
ltm.c
View File

@@ -1,69 +0,0 @@
/*
** $Id: ltm.c,v 1.99 2002/08/05 14:09:06 roberto Exp roberto $
** Tag methods
** See Copyright Notice in lua.h
*/
#include <string.h>
#include "lua.h"
#include "lobject.h"
#include "lstate.h"
#include "lstring.h"
#include "ltable.h"
#include "ltm.h"
const char *const luaT_typenames[] = {
"nil", "number", "string", "boolean", "table",
"function", "userdata", "userdata"
};
void luaT_init (lua_State *L) {
static const char *const luaT_eventname[] = { /* ORDER TM */
"__index", "__newindex",
"__gc", "__eq",
"__gettable", "__settable",
"__add", "__sub", "__mul", "__div",
"__pow", "__unm", "__lt", "__le",
"__concat", "__call"
};
int i;
for (i=0; i<TM_N; i++) {
G(L)->tmname[i] = luaS_new(L, luaT_eventname[i]);
luaS_fix(G(L)->tmname[i]); /* never collect these names */
}
}
/*
** function to be used with macro "fasttm": optimized for absence of
** tag methods
*/
const TObject *luaT_gettm (Table *events, TMS event, TString *ename) {
const TObject *tm = luaH_getstr(events, ename);
lua_assert(event <= TM_EQ);
if (ttisnil(tm)) { /* no tag method? */
events->flags |= (1u<<event); /* cache this fact */
return NULL;
}
else return tm;
}
const TObject *luaT_gettmbyobj (lua_State *L, const TObject *o, TMS event) {
TString *ename = G(L)->tmname[event];
switch (ttype(o)) {
case LUA_TTABLE:
return luaH_getstr(hvalue(o)->metatable, ename);
case LUA_TUSERDATA:
return luaH_getstr(uvalue(o)->uv.metatable, ename);
default:
return &luaO_nilobject;
}
}

50
ltm.h
View File

@@ -1,50 +0,0 @@
/*
** $Id: ltm.h,v 1.38 2002/07/01 17:06:58 roberto Exp roberto $
** Tag methods
** See Copyright Notice in lua.h
*/
#ifndef ltm_h
#define ltm_h
#include "lobject.h"
/*
* WARNING: if you change the order of this enumeration,
* grep "ORDER TM"
*/
typedef enum {
TM_INDEX,
TM_NEWINDEX,
TM_GC,
TM_EQ, /* last tag method with `fast' access */
TM_GETTABLE,
TM_SETTABLE,
TM_ADD,
TM_SUB,
TM_MUL,
TM_DIV,
TM_POW,
TM_UNM,
TM_LT,
TM_LE,
TM_CONCAT,
TM_CALL,
TM_N /* number of elements in the enum */
} TMS;
#define fasttm(l,et,e) \
(((et)->flags & (1u<<(e))) ? NULL : luaT_gettm(et, e, G(l)->tmname[e]))
const TObject *luaT_gettm (Table *events, TMS event, TString *ename);
const TObject *luaT_gettmbyobj (lua_State *L, const TObject *o, TMS event);
void luaT_init (lua_State *L);
extern const char *const luaT_typenames[];
#endif

409
lua.c
View File

@@ -1,385 +1,54 @@
/*
** $Id: lua.c,v 1.102 2002/08/12 17:23:12 roberto Exp roberto $
** Lua stand-alone interpreter
** See Copyright Notice in lua.h
** lua.c
** Linguagem para Usuarios de Aplicacao
** TeCGraf - PUC-Rio
** 28 Apr 93
*/
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "lua.h"
#include "lauxlib.h"
#include "lualib.h"
/*
** generic extra include file
*/
#ifdef LUA_USERCONFIG
#include LUA_USERCONFIG
#endif
#ifdef _POSIX_SOURCE
#include <unistd.h>
#else
static int isatty (int x) { return x==0; } /* assume stdin is a tty */
#endif
#ifndef PROMPT
#define PROMPT "> "
#endif
#ifndef PROMPT2
#define PROMPT2 ">> "
#endif
#ifndef lua_userinit
#define lua_userinit(L) openstdlibs(L)
#endif
static lua_State *L = NULL;
static const char *progname;
static lua_Hook old_hook = NULL;
static unsigned long old_mask = 0;
static void lstop (lua_State *l, lua_Debug *ar) {
(void)ar; /* unused arg. */
lua_sethook(l, old_hook, old_mask);
luaL_error(l, "interrupted!");
void test (void)
{
lua_pushobject(lua_getparam(1));
lua_call ("c", 1);
}
static void laction (int i) {
signal(i, SIG_DFL); /* if another SIGINT happens before lstop,
terminate process (default action) */
old_hook = lua_gethook(L);
old_mask = lua_gethookmask(L);
lua_sethook(L, lstop, LUA_MASKCALL | LUA_MASKRET | LUA_MASKCOUNT(1));
static void callfunc (void)
{
lua_Object obj = lua_getparam (1);
if (lua_isstring(obj)) lua_call(lua_getstring(obj),0);
}
static void execstr (void)
{
lua_Object obj = lua_getparam (1);
if (lua_isstring(obj)) lua_dostring(lua_getstring(obj));
}
void main (int argc, char *argv[])
{
int i;
if (argc < 2)
{
puts ("usage: lua filename [functionnames]");
return;
}
lua_register ("callfunc", callfunc);
lua_register ("execstr", execstr);
lua_register ("test", test);
iolib_open ();
strlib_open ();
mathlib_open ();
lua_dofile (argv[1]);
for (i=2; i<argc; i++)
{
lua_call (argv[i],0);
}
}
static void print_usage (void) {
fprintf(stderr,
"usage: %s [options] [prog [args]].\n"
"Available options are:\n"
" - execute stdin as a file\n"
" -e stat execute string `stat'\n"
" -i enter interactive mode after executing `prog'\n"
" -l name execute file `name'\n"
" -v print version information\n"
" -- stop handling options\n" ,
progname);
}
static void l_message (const char *pname, const char *msg) {
size_t l = strlen(msg);
if (pname) fprintf(stderr, "%s: ", pname);
fprintf(stderr, "%s", msg);
if (l > 0 && msg[l-1] != '\n') /* does not end with newline? */
fprintf(stderr, "\n"); /* add a newline */
}
static void report (int status) {
const char *msg;
if (status) {
msg = lua_tostring(L, -1);
if (msg == NULL) msg = "(error with no message)";
l_message(progname, msg);
lua_pop(L, 1);
}
}
static int lcall (int clear) {
int status;
int top = lua_gettop(L);
lua_getglobal(L, "_TRACEBACK"); /* get traceback function */
lua_insert(L, top); /* put it under chunk */
signal(SIGINT, laction);
status = lua_pcall(L, 0, LUA_MULTRET, -2);
signal(SIGINT, SIG_DFL);
lua_remove(L, top); /* remove traceback function */
if (status == 0 && clear)
lua_settop(L, top); /* remove eventual results */
return status;
}
static int l_panic (lua_State *l) {
(void)l;
l_message(progname, "unable to recover; exiting");
return 0;
}
static void print_version (void) {
l_message(NULL, LUA_VERSION " " LUA_COPYRIGHT);
}
static void getargs (char *argv[], int n) {
int i;
lua_newtable(L);
for (i=0; argv[i]; i++) {
lua_pushnumber(L, i - n);
lua_pushstring(L, argv[i]);
lua_rawset(L, -3);
}
/* arg.n = maximum index in table `arg' */
lua_pushliteral(L, "n");
lua_pushnumber(L, i-n-1);
lua_rawset(L, -3);
}
static int docall (int status) {
if (status == 0) status = lcall(1);
report(status);
return status;
}
static int file_input (const char *name) {
return docall(luaL_loadfile(L, name));
}
static int dostring (const char *s, const char *name) {
return docall(luaL_loadbuffer(L, s, strlen(s), name));
}
/*
** this macro can be used by some `history' system to save lines
** read in manual input
*/
#ifndef lua_saveline
#define lua_saveline(L,line) /* empty */
#endif
/*
** this macro defines a function to show the prompt and reads the
** next line for manual input
*/
#ifndef lua_readline
#define lua_readline(L,prompt) readline(L,prompt)
/* maximum length of an input line */
#ifndef MAXINPUT
#define MAXINPUT 512
#endif
static int readline (lua_State *l, const char *prompt) {
static char buffer[MAXINPUT];
if (prompt) {
fputs(prompt, stdout);
fflush(stdout);
}
if (fgets(buffer, sizeof(buffer), stdin) == NULL)
return 0; /* read fails */
else {
lua_pushstring(l, buffer);
return 1;
}
}
#endif
static const char *get_prompt (int firstline) {
const char *p = NULL;
lua_getglobal(L, firstline ? "_PROMPT" : "_PROMPT2");
p = lua_tostring(L, -1);
if (p == NULL) p = (firstline ? PROMPT : PROMPT2);
lua_pop(L, 1); /* remove global */
return p;
}
static int incomplete (int status) {
if (status == LUA_ERRSYNTAX &&
strstr(lua_tostring(L, -1), "near `<eof>'") != NULL) {
lua_pop(L, 1);
return 1;
}
else
return 0;
}
static int load_string (void) {
int status;
lua_settop(L, 0);
if (lua_readline(L, get_prompt(1)) == 0) /* no input? */
return -1;
if (lua_tostring(L, -1)[0] == '=') { /* line starts with `=' ? */
lua_pushfstring(L, "return %s", lua_tostring(L, -1)+1);/* `=' -> `return' */
lua_remove(L, -2); /* remove original line */
}
for (;;) { /* repeat until gets a complete line */
status = luaL_loadbuffer(L, lua_tostring(L, 1), lua_strlen(L, 1), "=stdin");
if (!incomplete(status)) break; /* cannot try to add lines? */
if (lua_readline(L, get_prompt(0)) == 0) /* no more input? */
return -1;
lua_concat(L, lua_gettop(L)); /* join lines */
}
lua_saveline(L, lua_tostring(L, 1));
lua_remove(L, 1); /* remove line */
return status;
}
static void manual_input (void) {
int status;
const char *oldprogname = progname;
progname = NULL;
while ((status = load_string()) != -1) {
if (status == 0) status = lcall(0);
report(status);
if (status == 0 && lua_gettop(L) > 0) { /* any result to print? */
lua_getglobal(L, "print");
lua_insert(L, 1);
if (lua_pcall(L, lua_gettop(L)-1, 0, 0) != 0)
l_message(progname, "error calling `print'");
}
}
lua_settop(L, 0); /* clear stack */
fputs("\n", stdout);
progname = oldprogname;
}
static int handle_argv (char *argv[], int *interactive) {
if (argv[1] == NULL) { /* no more arguments? */
if (isatty(0)) {
print_version();
manual_input();
}
else
file_input(NULL); /* executes stdin as a file */
}
else { /* other arguments; loop over them */
int i;
for (i = 1; argv[i] != NULL; i++) {
if (argv[i][0] != '-') break; /* not an option? */
switch (argv[i][1]) { /* option */
case '-': { /* `--' */
i++; /* skip this argument */
goto endloop; /* stop handling arguments */
}
case '\0': {
file_input(NULL); /* executes stdin as a file */
break;
}
case 'i': {
*interactive = 1;
break;
}
case 'v': {
print_version();
break;
}
case 'e': {
const char *chunk = argv[i] + 2;
if (*chunk == '\0') chunk = argv[++i];
if (chunk == NULL) {
print_usage();
return EXIT_FAILURE;
}
if (dostring(chunk, "=<command line>") != 0)
return EXIT_FAILURE;
break;
}
case 'l': {
const char *filename = argv[i] + 2;
if (*filename == '\0') filename = argv[++i];
if (filename == NULL) {
print_usage();
return EXIT_FAILURE;
}
if (file_input(filename))
return EXIT_FAILURE; /* stop if file fails */
break;
}
case 'c': {
l_message(progname, "option `-c' is deprecated");
break;
}
case 's': {
l_message(progname, "option `-s' is deprecated");
break;
}
default: {
print_usage();
return EXIT_FAILURE;
}
}
} endloop:
if (argv[i] != NULL) {
const char *filename = argv[i];
getargs(argv, i); /* collect remaining arguments */
lua_setglobal(L, "arg");
return file_input(filename); /* stop scanning arguments */
}
}
return EXIT_SUCCESS;
}
static int openstdlibs (lua_State *l) {
int res = 0;
res += lua_baselibopen(l);
res += lua_tablibopen(l);
res += lua_iolibopen(l);
res += lua_strlibopen(l);
res += lua_mathlibopen(l);
res += lua_dblibopen(l);
/* add your libraries here */
return res;
}
static int handle_luainit (void) {
const char *init = getenv("LUA_INIT");
if (init == NULL) return 0; /* status OK */
else if (init[0] == '@')
return file_input(init+1);
else
return dostring(init, "=LUA_INIT");
}
int main (int argc, char *argv[]) {
int status;
int interactive = 0;
(void)argc; /* to avoid warnings */
progname = argv[0];
L = lua_open(); /* create state */
lua_atpanic(L, l_panic);
lua_pop(L, lua_userinit(L)); /* open libraries, discard any results */
status = handle_luainit();
if (status != 0) return status;
status = handle_argv(argv, &interactive);
if (status == 0 && interactive) manual_input();
lua_close(L);
return status;
}

418
lua.h
View File

@@ -1,382 +1,54 @@
/*
** $Id: lua.h,v 1.153 2002/08/06 18:54:18 roberto Exp roberto $
** Lua - An Extensible Extension Language
** Tecgraf: Computer Graphics Technology Group, PUC-Rio, Brazil
** http://www.lua.org mailto:info@lua.org
** See Copyright Notice at the end of this file
** LUA - Linguagem para Usuarios de Aplicacao
** Grupo de Tecnologia em Computacao Grafica
** TeCGraf - PUC-Rio
** 19 May 93
*/
#ifndef lua_h
#define lua_h
/* definition of `va_list' */
#include <stdarg.h>
/* definition of `size_t' */
#include <stddef.h>
#define LUA_VERSION "Lua 5.0 (alpha)"
#define LUA_COPYRIGHT "Copyright (C) 1994-2002 Tecgraf, PUC-Rio"
#define LUA_AUTHORS "W. Celes, R. Ierusalimschy & L. H. de Figueiredo"
/* option for multiple returns in `lua_pcall' and `lua_call' */
#define LUA_MULTRET (-1)
/*
** pseudo-indices
*/
#define LUA_REGISTRYINDEX (-10000)
#define LUA_GLOBALSINDEX (-10001)
#define lua_upvalueindex(i) (LUA_GLOBALSINDEX-(i))
/* error codes for `lua_load' and `lua_pcall' */
#define LUA_ERRRUN 1
#define LUA_ERRFILE 2
#define LUA_ERRSYNTAX 3
#define LUA_ERRMEM 4
#define LUA_ERRERR 5
#define LUA_ERRTHROW 6
typedef struct lua_State lua_State;
typedef int (*lua_CFunction) (lua_State *L);
/*
** functions that read blocks when loading Lua chunk
*/
typedef const char * (*lua_Chunkreader) (lua_State *L, void *ud, size_t *size);
/*
** basic types
*/
#define LUA_TNONE (-1)
#define LUA_TNIL 0
#define LUA_TNUMBER 1
#define LUA_TSTRING 2
#define LUA_TBOOLEAN 3
#define LUA_TTABLE 4
#define LUA_TFUNCTION 5
#define LUA_TUSERDATA 6
#define LUA_TLIGHTUSERDATA 7
/* minimum Lua stack available to a C function */
#define LUA_MINSTACK 20
/*
** generic extra include file
*/
#ifdef LUA_USER_H
#include LUA_USER_H
#endif
/* type of Numbers in Lua */
#ifndef LUA_NUMBER
#define LUA_NUMBER double
#endif
typedef LUA_NUMBER lua_Number;
/* mark for all API functions */
#ifndef LUA_API
#define LUA_API extern
#endif
/*
** state manipulation
*/
LUA_API lua_State *lua_open (void);
LUA_API void lua_close (lua_State *L);
LUA_API lua_State *lua_newthread (lua_State *L);
LUA_API void lua_closethread (lua_State *L, lua_State *thread);
LUA_API lua_CFunction lua_atpanic (lua_State *L, lua_CFunction panicf);
/*
** basic stack manipulation
*/
LUA_API int lua_gettop (lua_State *L);
LUA_API void lua_settop (lua_State *L, int index);
LUA_API void lua_pushvalue (lua_State *L, int index);
LUA_API void lua_remove (lua_State *L, int index);
LUA_API void lua_insert (lua_State *L, int index);
LUA_API void lua_replace (lua_State *L, int index);
LUA_API int lua_checkstack (lua_State *L, int size);
/*
** access functions (stack -> C)
*/
LUA_API int lua_isnumber (lua_State *L, int index);
LUA_API int lua_isstring (lua_State *L, int index);
LUA_API int lua_iscfunction (lua_State *L, int index);
LUA_API int lua_type (lua_State *L, int index);
LUA_API const char *lua_typename (lua_State *L, int type);
LUA_API int lua_equal (lua_State *L, int index1, int index2);
LUA_API int lua_rawequal (lua_State *L, int index1, int index2);
LUA_API int lua_lessthan (lua_State *L, int index1, int index2);
LUA_API lua_Number lua_tonumber (lua_State *L, int index);
LUA_API int lua_toboolean (lua_State *L, int index);
LUA_API const char *lua_tostring (lua_State *L, int index);
LUA_API size_t lua_strlen (lua_State *L, int index);
LUA_API lua_CFunction lua_tocfunction (lua_State *L, int index);
LUA_API void *lua_touserdata (lua_State *L, int index);
LUA_API const void *lua_topointer (lua_State *L, int index);
/*
** push functions (C -> stack)
*/
LUA_API void lua_pushnil (lua_State *L);
LUA_API void lua_pushnumber (lua_State *L, lua_Number n);
LUA_API void lua_pushlstring (lua_State *L, const char *s, size_t len);
LUA_API void lua_pushstring (lua_State *L, const char *s);
LUA_API const char *lua_pushvfstring (lua_State *L, const char *fmt,
va_list argp);
LUA_API const char *lua_pushfstring (lua_State *L, const char *fmt, ...);
LUA_API void lua_pushcclosure (lua_State *L, lua_CFunction fn, int n);
LUA_API void lua_pushboolean (lua_State *L, int b);
LUA_API void lua_pushlightuserdata (lua_State *L, void *p);
/*
** get functions (Lua -> stack)
*/
LUA_API void lua_gettable (lua_State *L, int index);
LUA_API void lua_rawget (lua_State *L, int index);
LUA_API void lua_rawgeti (lua_State *L, int index, int n);
LUA_API void lua_newtable (lua_State *L);
LUA_API int lua_getmetatable (lua_State *L, int objindex);
LUA_API const char *lua_getmode (lua_State *L, int index);
LUA_API void lua_getglobals (lua_State *L, int index);
/*
** set functions (stack -> Lua)
*/
LUA_API void lua_settable (lua_State *L, int index);
LUA_API void lua_rawset (lua_State *L, int index);
LUA_API void lua_rawseti (lua_State *L, int index, int n);
LUA_API void lua_setmode (lua_State *L, int index, const char *mode);
LUA_API int lua_setmetatable (lua_State *L, int objindex);
LUA_API int lua_setglobals (lua_State *L, int index);
/*
** `load' and `call' functions (load and run Lua code)
*/
LUA_API void lua_call (lua_State *L, int nargs, int nresults);
LUA_API int lua_pcall (lua_State *L, int nargs, int nresults, int errfunc);
LUA_API int lua_load (lua_State *L, lua_Chunkreader reader, void *data,
const char *chunkname);
/*
** coroutine functions
*/
LUA_API void lua_cobegin (lua_State *L, int nargs);
LUA_API int lua_yield (lua_State *L, int nresults);
LUA_API int lua_resume (lua_State *L, lua_State *co);
/*
** Garbage-collection functions
*/
LUA_API int lua_getgcthreshold (lua_State *L);
LUA_API int lua_getgccount (lua_State *L);
LUA_API void lua_setgcthreshold (lua_State *L, int newthreshold);
/*
** miscellaneous functions
*/
LUA_API int lua_error (lua_State *L);
LUA_API int lua_next (lua_State *L, int index);
LUA_API void lua_concat (lua_State *L, int n);
LUA_API void *lua_newuserdata (lua_State *L, size_t size);
/*
** ===============================================================
** some useful macros
** ===============================================================
*/
#define lua_boxpointer(L,u) \
(*(void **)(lua_newuserdata(L, sizeof(void *))) = (u))
#define lua_unboxpointer(L,i) (*(void **)(lua_touserdata(L, i)))
#define lua_pop(L,n) lua_settop(L, -(n)-1)
#define lua_register(L,n,f) \
(lua_pushstring(L, n), \
lua_pushcfunction(L, f), \
lua_settable(L, LUA_GLOBALSINDEX))
#define lua_pushcfunction(L,f) lua_pushcclosure(L, f, 0)
#define lua_isfunction(L,n) (lua_type(L,n) == LUA_TFUNCTION)
#define lua_istable(L,n) (lua_type(L,n) == LUA_TTABLE)
#define lua_isuserdata(L,n) (lua_type(L,n) >= LUA_TUSERDATA)
#define lua_islightuserdata(L,n) (lua_type(L,n) == LUA_TLIGHTUSERDATA)
#define lua_isnil(L,n) (lua_type(L,n) == LUA_TNIL)
#define lua_isboolean(L,n) (lua_type(L,n) == LUA_TBOOLEAN)
#define lua_isnone(L,n) (lua_type(L,n) == LUA_TNONE)
#define lua_isnoneornil(L, n) (lua_type(L,n) <= 0)
#define lua_pushliteral(L, s) \
lua_pushlstring(L, "" s, (sizeof(s)/sizeof(char))-1)
/*
** compatibility macros and functions
*/
LUA_API int lua_pushupvalues (lua_State *L);
#define lua_getregistry(L) lua_pushvalue(L, LUA_REGISTRYINDEX)
#define lua_setglobal(L,s) \
(lua_pushstring(L, s), lua_insert(L, -2), lua_settable(L, LUA_GLOBALSINDEX))
#define lua_getglobal(L,s) \
(lua_pushstring(L, s), lua_gettable(L, LUA_GLOBALSINDEX))
#define lua_isnull lua_isnone
/* compatibility with ref system */
/* pre-defined references */
#define LUA_NOREF (-2)
#define LUA_REFNIL (-1)
#define lua_ref(L,lock) ((lock) ? luaL_ref(L, LUA_REGISTRYINDEX) : \
(lua_pushstring(L, "unlocked references are obsolete"), lua_error(L), 0))
#define lua_unref(L,ref) luaL_unref(L, LUA_REGISTRYINDEX, (ref))
#define lua_getref(L,ref) lua_rawgeti(L, LUA_REGISTRYINDEX, ref)
/*
** {======================================================================
** useful definitions for Lua kernel and libraries
** =======================================================================
*/
/* formats for Lua numbers */
#ifndef LUA_NUMBER_SCAN
#define LUA_NUMBER_SCAN "%lf"
#endif
#ifndef LUA_NUMBER_FMT
#define LUA_NUMBER_FMT "%.16g"
#endif
/* }====================================================================== */
/*
** {======================================================================
** Debug API
** =======================================================================
*/
typedef enum lua_Hookevent {
LUA_HOOKCALL, LUA_HOOKRET, LUA_HOOKLINE, LUA_HOOKCOUNT
} lua_Hookevent;
#define LUA_MASKCALL (2 << LUA_HOOKCALL)
#define LUA_MASKRET (2 << LUA_HOOKRET)
#define LUA_MASKLINE (2 << LUA_HOOKLINE)
#define LUA_MASKCOUNT(count) ((unsigned long)(count) << 8)
#define lua_getmaskcount(mask) ((mask) >> 8)
#define LUA_MAXCOUNT ((1<<24) - 1)
typedef struct lua_Debug lua_Debug; /* activation record */
typedef void (*lua_Hook) (lua_State *L, lua_Debug *ar);
LUA_API int lua_getstack (lua_State *L, int level, lua_Debug *ar);
LUA_API int lua_getinfo (lua_State *L, const char *what, lua_Debug *ar);
LUA_API const char *lua_getlocal (lua_State *L, const lua_Debug *ar, int n);
LUA_API const char *lua_setlocal (lua_State *L, const lua_Debug *ar, int n);
LUA_API int lua_sethook (lua_State *L, lua_Hook func, unsigned long mask);
LUA_API lua_Hook lua_gethook (lua_State *L);
LUA_API unsigned long lua_gethookmask (lua_State *L);
#define LUA_IDSIZE 60
struct lua_Debug {
lua_Hookevent event;
const char *name; /* (n) */
const char *namewhat; /* (n) `global', `local', `field', `method' */
const char *what; /* (S) `Lua' function, `C' function, Lua `main' */
const char *source; /* (S) */
int currentline; /* (l) */
int nups; /* (u) number of upvalues */
int linedefined; /* (S) */
char short_src[LUA_IDSIZE]; /* (S) */
/* private part */
int i_ci; /* active function */
};
/* }====================================================================== */
/******************************************************************************
* Copyright (C) 2002 Tecgraf, PUC-Rio. All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
******************************************************************************/
typedef void (*lua_CFunction) (void);
typedef struct Object *lua_Object;
#define lua_register(n,f) (lua_pushcfunction(f), lua_storeglobal(n))
void lua_errorfunction (void (*fn) (char *s));
void lua_error (char *s);
int lua_dofile (char *filename);
int lua_dostring (char *string);
int lua_call (char *functionname, int nparam);
lua_Object lua_getparam (int number);
float lua_getnumber (lua_Object object);
char *lua_getstring (lua_Object object);
char *lua_copystring (lua_Object object);
lua_CFunction lua_getcfunction (lua_Object object);
void *lua_getuserdata (lua_Object object);
lua_Object lua_getfield (lua_Object object, char *field);
lua_Object lua_getindexed (lua_Object object, float index);
lua_Object lua_getglobal (char *name);
lua_Object lua_pop (void);
int lua_pushnil (void);
int lua_pushnumber (float n);
int lua_pushstring (char *s);
int lua_pushcfunction (lua_CFunction fn);
int lua_pushuserdata (void *u);
int lua_pushobject (lua_Object object);
int lua_storeglobal (char *name);
int lua_storefield (lua_Object object, char *field);
int lua_storeindexed (lua_Object object, float index);
int lua_isnil (lua_Object object);
int lua_isnumber (lua_Object object);
int lua_isstring (lua_Object object);
int lua_istable (lua_Object object);
int lua_iscfunction (lua_Object object);
int lua_isuserdata (lua_Object object);
#endif

View File

@@ -1,44 +1,15 @@
/*
** $Id: lualib.h,v 1.24 2002/06/18 17:42:52 roberto Exp roberto $
** Lua standard libraries
** See Copyright Notice in lua.h
** Libraries to use in LUA programs
** Grupo de Tecnologia em Computacao Grafica
** TeCGraf - PUC-Rio
** 19 May 93
*/
#ifndef lualib_h
#define lualib_h
#include "lua.h"
#ifndef LUALIB_API
#define LUALIB_API extern
#endif
#define LUA_COLIBNAME "coroutine"
LUALIB_API int lua_baselibopen (lua_State *L);
#define LUA_TABLIBNAME "table"
LUALIB_API int lua_tablibopen (lua_State *L);
#define LUA_IOLIBNAME "io"
#define LUA_OSLIBNAME "os"
LUALIB_API int lua_iolibopen (lua_State *L);
#define LUA_STRLIBNAME "string"
LUALIB_API int lua_strlibopen (lua_State *L);
#define LUA_MATHLIBNAME "math"
LUALIB_API int lua_mathlibopen (lua_State *L);
#define LUA_DBLIBNAME "debug"
LUALIB_API int lua_dblibopen (lua_State *L);
/* to help testing the libraries */
#ifndef lua_assert
#define lua_assert(c) /* empty */
#endif
void iolib_open (void);
void strlib_open (void);
void mathlib_open (void);
#endif

274
lundump.c
View File

@@ -1,274 +0,0 @@
/*
** $Id: lundump.c,v 1.43 2002/08/07 00:36:03 lhf Exp $
** load pre-compiled Lua chunks
** See Copyright Notice in lua.h
*/
#include "lua.h"
#include "ldebug.h"
#include "lfunc.h"
#include "lmem.h"
#include "lopcodes.h"
#include "lstring.h"
#include "lundump.h"
#include "lzio.h"
#define LoadByte (lu_byte) ezgetc
typedef struct {
lua_State* L;
ZIO* Z;
int swap;
const char* name;
} LoadState;
static void unexpectedEOZ (LoadState* S)
{
luaG_runerror(S->L,"unexpected end of file in %s",S->name);
}
static int ezgetc (LoadState* S)
{
int c=zgetc(S->Z);
if (c==EOZ) unexpectedEOZ(S);
return c;
}
static void ezread (LoadState* S, void* b, int n)
{
int r=luaZ_read(S->Z,b,n);
if (r!=0) unexpectedEOZ(S);
}
static void LoadBlock (LoadState* S, void* b, size_t size)
{
if (S->swap)
{
char *p=(char*) b+size-1;
int n=size;
while (n--) *p--=(char)ezgetc(S);
}
else
ezread(S,b,size);
}
static void LoadVector (LoadState* S, void* b, int m, size_t size)
{
if (S->swap)
{
char *q=(char*) b;
while (m--)
{
char *p=q+size-1;
int n=size;
while (n--) *p--=(char)ezgetc(S);
q+=size;
}
}
else
ezread(S,b,m*size);
}
static int LoadInt (LoadState* S)
{
int x;
LoadBlock(S,&x,sizeof(x));
if (x<0) luaG_runerror(S->L,"bad integer in %s",S->name);
return x;
}
static size_t LoadSize (LoadState* S)
{
size_t x;
LoadBlock(S,&x,sizeof(x));
return x;
}
static lua_Number LoadNumber (LoadState* S)
{
lua_Number x;
LoadBlock(S,&x,sizeof(x));
return x;
}
static TString* LoadString (LoadState* S)
{
size_t size=LoadSize(S);
if (size==0)
return NULL;
else
{
char* s=luaO_openspace(S->L,size,char);
ezread(S,s,size);
return luaS_newlstr(S->L,s,size-1); /* remove trailing '\0' */
}
}
static void LoadCode (LoadState* S, Proto* f)
{
int size=LoadInt(S);
f->code=luaM_newvector(S->L,size,Instruction);
f->sizecode=size;
LoadVector(S,f->code,size,sizeof(*f->code));
}
static void LoadLocals (LoadState* S, Proto* f)
{
int i,n;
n=LoadInt(S);
f->locvars=luaM_newvector(S->L,n,LocVar);
f->sizelocvars=n;
for (i=0; i<n; i++)
{
f->locvars[i].varname=LoadString(S);
f->locvars[i].startpc=LoadInt(S);
f->locvars[i].endpc=LoadInt(S);
}
}
static void LoadLines (LoadState* S, Proto* f)
{
int n;
n=LoadInt(S);
f->lineinfo=luaM_newvector(S->L,n,int);
LoadVector(S,f->lineinfo,n,sizeof(*f->lineinfo));
}
static Proto* LoadFunction (LoadState* S, TString* p);
static void LoadConstants (LoadState* S, Proto* f)
{
int i,n;
n=LoadInt(S);
f->k=luaM_newvector(S->L,n,TObject);
f->sizek=n;
for (i=0; i<n; i++)
{
TObject* o=&f->k[i];
int t=LoadByte(S);
switch (t)
{
case LUA_TNUMBER:
setnvalue(o,LoadNumber(S));
break;
case LUA_TSTRING:
setsvalue(o,LoadString(S));
break;
case LUA_TNIL:
setnilvalue(o);
break;
default:
luaG_runerror(S->L,"bad constant type (%d) in %s",t,S->name);
break;
}
}
n=LoadInt(S);
f->p=luaM_newvector(S->L,n,Proto*);
f->sizep=n;
for (i=0; i<n; i++) f->p[i]=LoadFunction(S,f->source);
}
static Proto* LoadFunction (LoadState* S, TString* p)
{
Proto* f=luaF_newproto(S->L);
f->source=LoadString(S); if (f->source==NULL) f->source=p;
f->lineDefined=LoadInt(S);
f->nupvalues=LoadByte(S);
f->numparams=LoadByte(S);
f->is_vararg=LoadByte(S);
f->maxstacksize=LoadByte(S);
LoadLocals(S,f);
LoadLines(S,f);
LoadConstants(S,f);
LoadCode(S,f);
#ifndef TRUST_BINARIES
if (!luaG_checkcode(f)) luaG_runerror(S->L,"bad code in %s",S->name);
#endif
return f;
}
static void LoadSignature (LoadState* S)
{
const char* s=LUA_SIGNATURE;
while (*s!=0 && ezgetc(S)==*s)
++s;
if (*s!=0) luaG_runerror(S->L,"bad signature in %s",S->name);
}
static void TestSize (LoadState* S, int s, const char* what)
{
int r=LoadByte(S);
if (r!=s)
luaG_runerror(S->L,"virtual machine mismatch in %s: "
"size of %s is %d but read %d",S->name,what,s,r);
}
#define TESTSIZE(s,w) TestSize(S,s,w)
#define V(v) v/16,v%16
static void LoadHeader (LoadState* S)
{
int version;
lua_Number x=0,tx=TEST_NUMBER;
LoadSignature(S);
version=LoadByte(S);
if (version>VERSION)
luaG_runerror(S->L,"%s too new: "
"read version %d.%d; expected at most %d.%d",
S->name,V(version),V(VERSION));
if (version<VERSION0) /* check last major change */
luaG_runerror(S->L,"%s too old: "
"read version %d.%d; expected at least %d.%d",
S->name,V(version),V(VERSION0));
S->swap=(luaU_endianness()!=LoadByte(S)); /* need to swap bytes? */
TESTSIZE(sizeof(int),"int");
TESTSIZE(sizeof(size_t), "size_t");
TESTSIZE(sizeof(Instruction), "Instruction");
TESTSIZE(SIZE_OP, "OP");
TESTSIZE(SIZE_A, "A");
TESTSIZE(SIZE_B, "B");
TESTSIZE(SIZE_C, "C");
TESTSIZE(sizeof(lua_Number), "number");
x=LoadNumber(S);
if ((long)x!=(long)tx) /* disregard errors in last bits of fraction */
luaG_runerror(S->L,"unknown number format in %s: read %f; expected %f",
S->name,x,tx);
}
static Proto* LoadChunk (LoadState* S)
{
LoadHeader(S);
return LoadFunction(S,NULL);
}
/*
** load one chunk from a file or buffer
*/
Proto* luaU_undump (lua_State* L, ZIO* Z)
{
LoadState S;
Proto* f;
const char* s=zname(Z);
if (*s=='@' || *s=='=')
S.name=s+1;
else if (*s==LUA_SIGNATURE[0])
S.name="binary string";
else
S.name=s;
S.L=L;
S.Z=Z;
f=LoadChunk(&S);
if (zgetc(Z)!=EOZ)
luaG_runerror(L,"%s apparently contains more than one chunk",S.name);
return f;
}
/*
** find byte order
*/
int luaU_endianness (void)
{
int x=1;
return *(char*)&x;
}

View File

@@ -1,36 +0,0 @@
/*
** $Id: lundump.h,v 1.26 2002/08/07 00:36:03 lhf Exp $
** load pre-compiled Lua chunks
** See Copyright Notice in lua.h
*/
#ifndef lundump_h
#define lundump_h
#include "lobject.h"
#include "lzio.h"
typedef int (*Writer)(const void* p, size_t size, void* u);
/* load one chunk; from lundump.c */
Proto* luaU_undump (lua_State* L, ZIO* Z);
/* find byte order; from lundump.c */
int luaU_endianness (void);
/* dump one chunk; from dump.c */
void luaU_dump (const Proto* Main, Writer w, void* data);
/* print one chunk; from print.c */
void luaU_print (const Proto* Main);
/* definitions for headers of binary files */
#define LUA_SIGNATURE "\033Lua" /* binary files start with <esc>Lua */
#define VERSION 0x50 /* last format change was in 5.0 */
#define VERSION0 0x50 /* last major change was in 5.0 */
/* a multiple of PI for testing native format */
/* multiplying by 1E8 gives non-trivial integer values */
#define TEST_NUMBER 3.14159265358979323846E8
#endif

737
lvm.c
View File

@@ -1,737 +0,0 @@
/*
** $Id: lvm.c,v 1.251 2002/08/07 19:22:39 roberto Exp roberto $
** Lua virtual machine
** See Copyright Notice in lua.h
*/
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
#include "lua.h"
#include "ldebug.h"
#include "ldo.h"
#include "lfunc.h"
#include "lgc.h"
#include "lobject.h"
#include "lopcodes.h"
#include "lstate.h"
#include "lstring.h"
#include "ltable.h"
#include "ltm.h"
#include "lvm.h"
/* function to convert a lua_Number to a string */
#ifndef lua_number2str
#include <stdio.h>
#define lua_number2str(s,n) sprintf((s), LUA_NUMBER_FMT, (n))
#endif
/* limit for table tag-method chains (to avoid loops) */
#define MAXTAGLOOP 100
static void luaV_checkGC (lua_State *L, StkId top) {
if (G(L)->nblocks >= G(L)->GCthreshold) {
L->top = top; /* limit for active registers */
luaC_collectgarbage(L);
L->top = L->ci->top; /* restore old top position */
}
}
const TObject *luaV_tonumber (const TObject *obj, TObject *n) {
lua_Number num;
if (ttisnumber(obj)) return obj;
if (ttisstring(obj) && luaO_str2d(svalue(obj), &num)) {
setnvalue(n, num);
return n;
}
else
return NULL;
}
int luaV_tostring (lua_State *L, TObject *obj) {
if (!ttisnumber(obj))
return 0;
else {
char s[32]; /* 16 digits, sign, point and \0 (+ some extra...) */
lua_number2str(s, nvalue(obj));
setsvalue(obj, luaS_new(L, s));
return 1;
}
}
static void traceexec (lua_State *L) {
unsigned long mask = L->hookmask;
if (mask > LUA_MASKLINE) { /* instruction-hook set? */
if (L->hookcount == 0) {
luaD_callhook(L, LUA_HOOKCOUNT, -1);
resethookcount(L);
return;
}
}
if (mask & LUA_MASKLINE) {
CallInfo *ci = L->ci;
Proto *p = ci_func(ci)->l.p;
int newline = getline(p, pcRel(*ci->u.l.pc, p));
lua_assert(ci->state & CI_HASFRAME);
if (pcRel(*ci->u.l.pc, p) == 0) /* tracing may be starting now? */
ci->u.l.savedpc = *ci->u.l.pc; /* initialize `savedpc' */
/* calls linehook when enters a new line or jumps back (loop) */
if (*ci->u.l.pc <= ci->u.l.savedpc ||
newline != getline(p, pcRel(ci->u.l.savedpc, p))) {
luaD_callhook(L, LUA_HOOKLINE, newline);
ci = L->ci; /* previous call may reallocate `ci' */
}
ci->u.l.savedpc = *ci->u.l.pc;
}
}
static void callTMres (lua_State *L, const TObject *f,
const TObject *p1, const TObject *p2) {
setobj(L->top, f); /* push function */
setobj(L->top+1, p1); /* 1st argument */
setobj(L->top+2, p2); /* 2nd argument */
luaD_checkstack(L, 3); /* cannot check before (could invalidate p1, p2) */
L->top += 3;
luaD_call(L, L->top - 3, 1);
L->top--; /* result will be in L->top */
}
static void callTM (lua_State *L, const TObject *f,
const TObject *p1, const TObject *p2, const TObject *p3) {
setobj(L->top, f); /* push function */
setobj(L->top+1, p1); /* 1st argument */
setobj(L->top+2, p2); /* 2nd argument */
setobj(L->top+3, p3); /* 3th argument */
luaD_checkstack(L, 4); /* cannot check before (could invalidate p1...p3) */
L->top += 4;
luaD_call(L, L->top - 4, 0);
}
static const TObject *luaV_index (lua_State *L, const TObject *t,
TObject *key, int loop) {
const TObject *tm = fasttm(L, hvalue(t)->metatable, TM_INDEX);
if (tm == NULL) return &luaO_nilobject; /* no TM */
if (ttisfunction(tm)) {
callTMres(L, tm, t, key);
return L->top;
}
else return luaV_gettable(L, tm, key, loop);
}
static const TObject *luaV_getnotable (lua_State *L, const TObject *t,
TObject *key, int loop) {
const TObject *tm = luaT_gettmbyobj(L, t, TM_GETTABLE);
if (ttisnil(tm))
luaG_typeerror(L, t, "index");
if (ttisfunction(tm)) {
callTMres(L, tm, t, key);
return L->top;
}
else return luaV_gettable(L, tm, key, loop);
}
/*
** Function to index a table.
** Receives the table at `t' and the key at `key'.
** leaves the result at `res'.
*/
const TObject *luaV_gettable (lua_State *L, const TObject *t, TObject *key,
int loop) {
if (loop > MAXTAGLOOP)
luaG_runerror(L, "loop in gettable");
if (ttistable(t)) { /* `t' is a table? */
Table *h = hvalue(t);
const TObject *v = luaH_get(h, key); /* do a primitive get */
if (!ttisnil(v)) return v;
else return luaV_index(L, t, key, loop+1);
}
else return luaV_getnotable(L, t, key, loop+1);
}
/*
** Receives table at `t', key at `key' and value at `val'.
*/
void luaV_settable (lua_State *L, const TObject *t, TObject *key, StkId val) {
const TObject *tm;
int loop = 0;
do {
if (ttistable(t)) { /* `t' is a table? */
Table *h = hvalue(t);
TObject *oldval = luaH_set(L, h, key); /* do a primitive set */
if (!ttisnil(oldval) || /* result is no nil? */
(tm = fasttm(L, h->metatable, TM_NEWINDEX)) == NULL) { /* or no TM? */
setobj(oldval, val);
return;
}
/* else will try the tag method */
}
else if (ttisnil(tm = luaT_gettmbyobj(L, t, TM_SETTABLE)))
luaG_typeerror(L, t, "index");
if (ttisfunction(tm)) {
callTM(L, tm, t, key, val);
return;
}
t = tm; /* else repeat with `tm' */
} while (++loop <= MAXTAGLOOP);
luaG_runerror(L, "loop in settable");
}
static int call_binTM (lua_State *L, const TObject *p1, const TObject *p2,
TObject *res, TMS event) {
ptrdiff_t result = savestack(L, res);
const TObject *tm = luaT_gettmbyobj(L, p1, event); /* try first operand */
if (ttisnil(tm))
tm = luaT_gettmbyobj(L, p2, event); /* try second operand */
if (!ttisfunction(tm)) return 0;
callTMres(L, tm, p1, p2);
res = restorestack(L, result); /* previous call may change stack */
setobj(res, L->top);
return 1;
}
static int luaV_strcmp (const TString *ls, const TString *rs) {
const char *l = getstr(ls);
size_t ll = ls->tsv.len;
const char *r = getstr(rs);
size_t lr = rs->tsv.len;
for (;;) {
int temp = strcoll(l, r);
if (temp != 0) return temp;
else { /* strings are equal up to a `\0' */
size_t len = strlen(l); /* index of first `\0' in both strings */
if (len == lr) /* r is finished? */
return (len == ll) ? 0 : 1;
else if (len == ll) /* l is finished? */
return -1; /* l is smaller than r (because r is not finished) */
/* both strings longer than `len'; go on comparing (after the `\0') */
len++;
l += len; ll -= len; r += len; lr -= len;
}
}
}
int luaV_lessthan (lua_State *L, const TObject *l, const TObject *r) {
if (ttype(l) != ttype(r))
return luaG_ordererror(L, l, r);
else if (ttisnumber(l))
return nvalue(l) < nvalue(r);
else if (ttisstring(l))
return luaV_strcmp(tsvalue(l), tsvalue(r)) < 0;
else if (call_binTM(L, l, r, L->top, TM_LT))
return !l_isfalse(L->top);
return luaG_ordererror(L, l, r);
}
static int luaV_lessequal (lua_State *L, const TObject *l, const TObject *r) {
if (ttype(l) != ttype(r))
return luaG_ordererror(L, l, r);
else if (ttisnumber(l))
return nvalue(l) <= nvalue(r);
else if (ttisstring(l))
return luaV_strcmp(tsvalue(l), tsvalue(r)) <= 0;
else if (call_binTM(L, l, r, L->top, TM_LE)) /* first try `le' */
return !l_isfalse(L->top);
else if (call_binTM(L, r, l, L->top, TM_LT)) /* else try `lt' */
return l_isfalse(L->top);
return luaG_ordererror(L, l, r);
}
int luaV_equalval (lua_State *L, const TObject *t1, const TObject *t2) {
const TObject *tm = NULL;
lua_assert(ttype(t1) == ttype(t2));
switch (ttype(t1)) {
case LUA_TNIL: return 1;
case LUA_TNUMBER: return nvalue(t1) == nvalue(t2);
case LUA_TSTRING: return tsvalue(t1) == tsvalue(t2);
case LUA_TBOOLEAN: return bvalue(t1) == bvalue(t2); /* true must be 1 !! */
case LUA_TLIGHTUSERDATA: return pvalue(t1) == pvalue(t2);
case LUA_TFUNCTION: return clvalue(t1) == clvalue(t2);
case LUA_TUSERDATA:
if (uvalue(t1) == uvalue(t2)) return 1;
else if ((tm = fasttm(L, uvalue(t1)->uv.metatable, TM_EQ)) == NULL &&
(tm = fasttm(L, uvalue(t2)->uv.metatable, TM_EQ)) == NULL)
return 0; /* no TM */
else break; /* will try TM */
case LUA_TTABLE:
if (hvalue(t1) == hvalue(t2)) return 1;
else if ((tm = fasttm(L, hvalue(t1)->metatable, TM_EQ)) == NULL &&
(tm = fasttm(L, hvalue(t2)->metatable, TM_EQ)) == NULL)
return 0; /* no TM */
else break; /* will try TM */
}
callTMres(L, tm, t1, t2); /* call TM */
return !l_isfalse(L->top);
}
void luaV_concat (lua_State *L, int total, int last) {
do {
StkId top = L->ci->base + last + 1;
int n = 2; /* number of elements handled in this pass (at least 2) */
if (!tostring(L, top-2) || !tostring(L, top-1)) {
if (!call_binTM(L, top-2, top-1, top-2, TM_CONCAT))
luaG_concaterror(L, top-2, top-1);
} else if (tsvalue(top-1)->tsv.len > 0) { /* if len=0, do nothing */
/* at least two string values; get as many as possible */
lu_mem tl = cast(lu_mem, tsvalue(top-1)->tsv.len) +
cast(lu_mem, tsvalue(top-2)->tsv.len);
char *buffer;
int i;
while (n < total && tostring(L, top-n-1)) { /* collect total length */
tl += tsvalue(top-n-1)->tsv.len;
n++;
}
if (tl > MAX_SIZET) luaG_runerror(L, "string size overflow");
buffer = luaO_openspace(L, tl, char);
tl = 0;
for (i=n; i>0; i--) { /* concat all strings */
size_t l = tsvalue(top-i)->tsv.len;
memcpy(buffer+tl, svalue(top-i), l);
tl += l;
}
setsvalue(top-n, luaS_newlstr(L, buffer, tl));
}
total -= n-1; /* got `n' strings to create 1 new */
last -= n-1;
} while (total > 1); /* repeat until only 1 result left */
}
static void Arith (lua_State *L, StkId ra, StkId rb, StkId rc, TMS op) {
TObject tempb, tempc;
const TObject *b, *c;
if ((b = luaV_tonumber(rb, &tempb)) != NULL &&
(c = luaV_tonumber(rc, &tempc)) != NULL) {
switch (op) {
case TM_ADD: setnvalue(ra, nvalue(b) + nvalue(c)); break;
case TM_SUB: setnvalue(ra, nvalue(b) - nvalue(c)); break;
case TM_MUL: setnvalue(ra, nvalue(b) * nvalue(c)); break;
case TM_DIV: setnvalue(ra, nvalue(b) / nvalue(c)); break;
case TM_POW: {
const TObject *f = luaH_getstr(hvalue(registry(L)),
G(L)->tmname[TM_POW]);
ptrdiff_t res = savestack(L, ra);
if (!ttisfunction(f))
luaG_runerror(L, "`pow' (for `^' operator) is not a function");
callTMres(L, f, b, c);
ra = restorestack(L, res); /* previous call may change stack */
setobj(ra, L->top);
break;
}
default: lua_assert(0); break;
}
}
else if (!call_binTM(L, rb, rc, ra, op))
luaG_aritherror(L, rb, rc);
}
/*
** some macros for common tasks in `luaV_execute'
*/
#define runtime_check(L, c) { if (!(c)) return 0; }
#define RA(i) (base+GETARG_A(i))
#define RB(i) (base+GETARG_B(i))
#define RC(i) (base+GETARG_C(i))
#define RKC(i) ((GETARG_C(i) < MAXSTACK) ? \
base+GETARG_C(i) : \
k+GETARG_C(i)-MAXSTACK)
#define KBx(i) (k+GETARG_Bx(i))
#define dojump(pc, i) ((pc) += (i))
StkId luaV_execute (lua_State *L) {
StkId base;
LClosure *cl;
TObject *k;
const Instruction *pc;
callentry: /* entry point when calling new functions */
L->ci->u.l.pb = &base;
L->ci->u.l.pc = &pc;
if (L->hookmask & LUA_MASKCALL)
luaD_callhook(L, LUA_HOOKCALL, -1);
retentry: /* entry point when returning to old functions */
lua_assert(L->ci->state & CI_SAVEDPC);
L->ci->state = CI_HASFRAME; /* activate frame */
pc = L->ci->u.l.savedpc;
base = L->ci->base;
cl = &clvalue(base - 1)->l;
k = cl->p->k;
/* main loop of interpreter */
for (;;) {
const Instruction i = *pc++;
StkId ra;
if (L->hookmask >= LUA_MASKLINE &&
(--L->hookcount == 0 || L->hookmask & LUA_MASKLINE))
traceexec(L);
/* warning!! several calls may realloc the stack and invalidate `ra' */
ra = RA(i);
lua_assert(L->top <= L->stack + L->stacksize && L->top >= L->ci->base);
lua_assert(L->top == L->ci->top ||
GET_OPCODE(i) == OP_CALL || GET_OPCODE(i) == OP_TAILCALL ||
GET_OPCODE(i) == OP_RETURN || GET_OPCODE(i) == OP_SETLISTO);
switch (GET_OPCODE(i)) {
case OP_MOVE: {
setobj(ra, RB(i));
break;
}
case OP_LOADK: {
setobj(ra, KBx(i));
break;
}
case OP_LOADBOOL: {
setbvalue(ra, GETARG_B(i));
if (GETARG_C(i)) pc++; /* skip next instruction (if C) */
break;
}
case OP_LOADNIL: {
TObject *rb = RB(i);
do {
setnilvalue(rb--);
} while (rb >= ra);
break;
}
case OP_GETUPVAL: {
int b = GETARG_B(i);
setobj(ra, cl->upvals[b]->v);
break;
}
case OP_GETGLOBAL: {
StkId rb = KBx(i);
const TObject *v;
lua_assert(ttisstring(rb) && ttistable(&cl->g));
v = luaH_getstr(hvalue(&cl->g), tsvalue(rb));
if (!ttisnil(v)) { setobj(ra, v); }
else
setobj(RA(i), luaV_index(L, &cl->g, rb, 0));
break;
}
case OP_GETTABLE: {
StkId rb = RB(i);
TObject *rc = RKC(i);
if (ttistable(rb)) {
const TObject *v = luaH_get(hvalue(rb), rc);
if (!ttisnil(v)) { setobj(ra, v); }
else
setobj(RA(i), luaV_index(L, rb, rc, 0));
}
else
setobj(RA(i), luaV_getnotable(L, rb, rc, 0));
break;
}
case OP_SETGLOBAL: {
lua_assert(ttisstring(KBx(i)) && ttistable(&cl->g));
luaV_settable(L, &cl->g, KBx(i), ra);
break;
}
case OP_SETUPVAL: {
int b = GETARG_B(i);
setobj(cl->upvals[b]->v, ra);
break;
}
case OP_SETTABLE: {
luaV_settable(L, RB(i), RKC(i), ra);
break;
}
case OP_NEWTABLE: {
int b = GETARG_B(i);
if (b > 0) b = twoto(b-1);
sethvalue(ra, luaH_new(L, b, GETARG_C(i)));
luaV_checkGC(L, ra+1);
break;
}
case OP_SELF: {
StkId rb = RB(i);
TObject *rc = RKC(i);
runtime_check(L, ttisstring(rc));
setobj(ra+1, rb);
if (ttistable(rb)) {
const TObject *v = luaH_getstr(hvalue(rb), tsvalue(rc));
if (!ttisnil(v)) { setobj(ra, v); }
else
setobj(RA(i), luaV_index(L, rb, rc, 0));
}
else
setobj(RA(i), luaV_getnotable(L, rb, rc, 0));
break;
}
case OP_ADD: {
StkId rb = RB(i);
StkId rc = RKC(i);
if (ttisnumber(rb) && ttisnumber(rc)) {
setnvalue(ra, nvalue(rb) + nvalue(rc));
}
else
Arith(L, ra, rb, rc, TM_ADD);
break;
}
case OP_SUB: {
StkId rb = RB(i);
StkId rc = RKC(i);
if (ttisnumber(rb) && ttisnumber(rc)) {
setnvalue(ra, nvalue(rb) - nvalue(rc));
}
else
Arith(L, ra, rb, rc, TM_SUB);
break;
}
case OP_MUL: {
StkId rb = RB(i);
StkId rc = RKC(i);
if (ttisnumber(rb) && ttisnumber(rc)) {
setnvalue(ra, nvalue(rb) * nvalue(rc));
}
else
Arith(L, ra, rb, rc, TM_MUL);
break;
}
case OP_DIV: {
StkId rb = RB(i);
StkId rc = RKC(i);
if (ttisnumber(rb) && ttisnumber(rc)) {
setnvalue(ra, nvalue(rb) / nvalue(rc));
}
else
Arith(L, ra, rb, rc, TM_DIV);
break;
}
case OP_POW: {
Arith(L, ra, RB(i), RKC(i), TM_POW);
break;
}
case OP_UNM: {
const TObject *rb = RB(i);
TObject temp;
if (tonumber(rb, &temp)) {
setnvalue(ra, -nvalue(rb));
}
else {
setnilvalue(&temp);
if (!call_binTM(L, RB(i), &temp, ra, TM_UNM))
luaG_aritherror(L, RB(i), &temp);
}
break;
}
case OP_NOT: {
int res = l_isfalse(RB(i)); /* next assignment may change this value */
setbvalue(ra, res);
break;
}
case OP_CONCAT: {
int b = GETARG_B(i);
int c = GETARG_C(i);
luaV_concat(L, c-b+1, c); /* may change `base' (and `ra') */
setobj(RA(i), base+b);
luaV_checkGC(L, base+c+1);
break;
}
case OP_JMP: {
dojump(pc, GETARG_sBx(i));
break;
}
case OP_EQ: { /* skip next instruction if test fails */
if (equalobj(L, ra, RKC(i)) != GETARG_B(i)) pc++;
else dojump(pc, GETARG_sBx(*pc) + 1);
break;
}
case OP_LT: {
if (luaV_lessthan(L, ra, RKC(i)) != GETARG_B(i)) pc++;
else dojump(pc, GETARG_sBx(*pc) + 1);
break;
}
case OP_LE: {
if (luaV_lessequal(L, ra, RKC(i)) != GETARG_B(i)) pc++;
else dojump(pc, GETARG_sBx(*pc) + 1);
break;
}
case OP_GT: {
if (luaV_lessthan(L, RKC(i), ra) != GETARG_B(i)) pc++;
else dojump(pc, GETARG_sBx(*pc) + 1);
break;
}
case OP_GE: {
if (luaV_lessequal(L, RKC(i), ra) != GETARG_B(i)) pc++;
else dojump(pc, GETARG_sBx(*pc) + 1);
break;
}
case OP_TEST: {
StkId rc = RKC(i);
if (l_isfalse(rc) == GETARG_B(i)) pc++;
else {
setobj(ra, rc);
dojump(pc, GETARG_sBx(*pc) + 1);
}
break;
}
case OP_CALL:
case OP_TAILCALL: {
StkId firstResult;
int b = GETARG_B(i);
int nresults;
if (b != 0) L->top = ra+b; /* else previous instruction set top */
nresults = GETARG_C(i) - 1;
firstResult = luaD_precall(L, ra);
if (firstResult) {
if (firstResult > L->top) { /* yield? */
(L->ci - 1)->u.l.savedpc = pc;
(L->ci - 1)->state = CI_SAVEDPC;
return NULL;
}
/* it was a C function (`precall' called it); adjust results */
luaD_poscall(L, nresults, firstResult);
if (nresults >= 0) L->top = L->ci->top;
}
else { /* it is a Lua function */
if (GET_OPCODE(i) == OP_CALL) { /* regular call? */
(L->ci-1)->u.l.savedpc = pc; /* save `pc' to return later */
(L->ci-1)->state = (CI_SAVEDPC | CI_CALLING);
}
else { /* tail call: put new frame in place of previous one */
int aux;
StkId ra1 = RA(i); /* `luaD_precall' may change the stack */
if (L->openupval) luaF_close(L, base);
for (aux = 0; ra1+aux < L->top; aux++) /* move frame down */
setobj(base+aux-1, ra1+aux);
(L->ci - 1)->top = L->top = base+aux; /* correct top */
lua_assert(L->ci->state & CI_SAVEDPC);
(L->ci - 1)->u.l.savedpc = L->ci->u.l.savedpc;
(L->ci - 1)->state = CI_SAVEDPC;
L->ci--; /* remove previous frame */
}
goto callentry;
}
break;
}
case OP_RETURN: {
CallInfo *ci = L->ci - 1;
int b = GETARG_B(i);
if (b != 0) L->top = ra+b-1;
lua_assert(L->ci->state & CI_HASFRAME);
if (L->openupval) luaF_close(L, base);
L->ci->state = CI_SAVEDPC; /* deactivate current function */
L->ci->u.l.savedpc = pc;
/* previous function was running `here'? */
if (!(ci->state & CI_CALLING))
return ra; /* no: return */
else { /* yes: continue its execution (go through) */
int nresults;
lua_assert(ttisfunction(ci->base - 1));
lua_assert(ci->state & CI_SAVEDPC);
lua_assert(GET_OPCODE(*(ci->u.l.savedpc - 1)) == OP_CALL);
nresults = GETARG_C(*(ci->u.l.savedpc - 1)) - 1;
luaD_poscall(L, nresults, ra);
if (nresults >= 0) L->top = L->ci->top;
goto retentry;
}
}
case OP_FORLOOP: {
lua_Number step, index, limit;
const TObject *plimit = ra+1;
const TObject *pstep = ra+2;
if (!ttisnumber(ra))
luaG_runerror(L, "`for' initial value must be a number");
if (!tonumber(plimit, ra+1))
luaG_runerror(L, "`for' limit must be a number");
if (!tonumber(pstep, ra+2))
luaG_runerror(L, "`for' step must be a number");
step = nvalue(pstep);
index = nvalue(ra) + step; /* increment index */
limit = nvalue(plimit);
if (step > 0 ? index <= limit : index >= limit) {
dojump(pc, GETARG_sBx(i)); /* jump back */
chgnvalue(ra, index); /* update index */
}
break;
}
case OP_TFORLOOP: {
setobj(ra+4, ra+2);
setobj(ra+3, ra+1);
setobj(ra+2, ra);
L->top = ra+5;
luaD_call(L, ra+2, GETARG_C(i) + 1);
L->top = L->ci->top;
if (ttisnil(RA(i)+2)) pc++; /* skip jump (break loop) */
else dojump(pc, GETARG_sBx(*pc) + 1); /* else jump back */
break;
}
case OP_TFORPREP: { /* for compatibility only */
if (ttistable(ra)) {
setobj(ra+1, ra);
setobj(ra, luaH_getstr(hvalue(gt(L)), luaS_new(L, "next")));
}
dojump(pc, GETARG_sBx(i));
break;
}
case OP_SETLIST:
case OP_SETLISTO: {
int bc;
int n;
Table *h;
runtime_check(L, ttistable(ra));
h = hvalue(ra);
bc = GETARG_Bx(i);
if (GET_OPCODE(i) == OP_SETLIST)
n = (bc&(LFIELDS_PER_FLUSH-1)) + 1;
else {
n = L->top - ra - 1;
L->top = L->ci->top;
}
bc &= ~(LFIELDS_PER_FLUSH-1); /* bc = bc - bc%FPF */
for (; n > 0; n--)
setobj(luaH_setnum(L, h, bc+n), ra+n);
break;
}
case OP_CLOSE: {
luaF_close(L, ra);
break;
}
case OP_CLOSURE: {
Proto *p;
Closure *ncl;
int nup, j;
p = cl->p->p[GETARG_Bx(i)];
nup = p->nupvalues;
ncl = luaF_newLclosure(L, nup, &cl->g);
ncl->l.p = p;
for (j=0; j<nup; j++, pc++) {
if (GET_OPCODE(*pc) == OP_GETUPVAL)
ncl->l.upvals[j] = cl->upvals[GETARG_B(*pc)];
else {
lua_assert(GET_OPCODE(*pc) == OP_MOVE);
ncl->l.upvals[j] = luaF_findupval(L, base + GETARG_B(*pc));
}
}
setclvalue(ra, ncl);
luaV_checkGC(L, L->top);
break;
}
}
}
}

35
lvm.h
View File

@@ -1,35 +0,0 @@
/*
** $Id: lvm.h,v 1.45 2002/08/05 17:36:24 roberto Exp roberto $
** Lua virtual machine
** See Copyright Notice in lua.h
*/
#ifndef lvm_h
#define lvm_h
#include "ldo.h"
#include "lobject.h"
#include "ltm.h"
#define tostring(L,o) ((ttype(o) == LUA_TSTRING) || (luaV_tostring(L, o)))
#define tonumber(o,n) (ttype(o) == LUA_TNUMBER || \
(((o) = luaV_tonumber(o,n)) != NULL))
#define equalobj(L,o1,o2) \
(ttype(o1) == ttype(o2) && luaV_equalval(L, o1, o2))
int luaV_lessthan (lua_State *L, const TObject *l, const TObject *r);
int luaV_equalval (lua_State *L, const TObject *t1, const TObject *t2);
const TObject *luaV_tonumber (const TObject *obj, TObject *n);
int luaV_tostring (lua_State *L, TObject *obj);
const TObject *luaV_gettable (lua_State *L, const TObject *t, TObject *key,
int loop);
void luaV_settable (lua_State *L, const TObject *t, TObject *key, StkId val);
StkId luaV_execute (lua_State *L);
void luaV_concat (lua_State *L, int total, int last);
#endif

68
lzio.c
View File

@@ -1,68 +0,0 @@
/*
** $Id: lzio.c,v 1.20 2002/08/05 18:45:02 roberto Exp roberto $
** a generic input stream interface
** See Copyright Notice in lua.h
*/
#include <string.h>
#include "lua.h"
#include "llimits.h"
#include "lzio.h"
int luaZ_fill (ZIO *z) {
size_t size;
const char *buff = z->reader(NULL, z->data, &size);
if (buff == NULL || size == 0) return EOZ;
z->n = size - 1;
z->p = buff;
return *(z->p++);
}
int luaZ_lookahead (ZIO *z) {
if (z->n == 0) {
int c = luaZ_fill(z);
if (c == EOZ) return c;
z->n++;
z->p--;
}
return *z->p;
}
void luaZ_init (ZIO *z, lua_Chunkreader reader, void *data, const char *name) {
z->reader = reader;
z->data = data;
z->name = name;
z->n = 0;
z->p = NULL;
}
/* --------------------------------------------------------------- read --- */
size_t luaZ_read (ZIO *z, void *b, size_t n) {
while (n) {
size_t m;
if (z->n == 0) {
if (luaZ_fill(z) == EOZ)
return n; /* return number of missing bytes */
else {
++z->n; /* filbuf removed first byte; put back it */
--z->p;
}
}
m = (n <= z->n) ? n : z->n; /* min. between n and z->n */
memcpy(b, z->p, m);
z->n -= m;
z->p += m;
b = (char *)b + m;
n -= m;
}
return 0;
}

42
lzio.h
View File

@@ -1,42 +0,0 @@
/*
** $Id: lzio.h,v 1.12 2002/06/06 12:40:22 roberto Exp roberto $
** Buffered streams
** See Copyright Notice in lua.h
*/
#ifndef lzio_h
#define lzio_h
#include "lua.h"
#define EOZ (-1) /* end of stream */
typedef struct zio ZIO;
#define zgetc(z) (((z)->n--)>0 ? \
cast(int, cast(unsigned char, *(z)->p++)) : \
luaZ_fill(z))
#define zname(z) ((z)->name)
void luaZ_init (ZIO *z, lua_Chunkreader reader, void *data, const char *name);
size_t luaZ_read (ZIO* z, void* b, size_t n); /* read next n bytes */
int luaZ_lookahead (ZIO *z);
/* --------- Private Part ------------------ */
struct zio {
size_t n; /* bytes still unread */
const char *p; /* current position in buffer */
lua_Chunkreader reader;
void* data; /* additional data */
const char *name;
};
int luaZ_fill (ZIO *z);
#endif

160
makefile
View File

@@ -1,160 +0,0 @@
#
## $Id: makefile,v 1.35 2002/03/18 18:18:35 roberto Exp roberto $
## Makefile
## See Copyright Notice in lua.h
#
#CONFIGURATION
# define (undefine) POPEN if your system (does not) support piped I/O
#
# define (undefine) _POSIX_SOURCE if your system is (not) POSIX compliant
#
# define LUA_NUM_TYPE if you need numbers to be different from double
# (for instance, -DLUA_NUM_TYPE=float)
# you may need to adapat the code, too.
# DEBUG = -g -DLUA_USER_H='"ltests.h"'
OPTIMIZE = -O2 \
-D'lua_number2int(i,d)=__asm__("fldl %1\nfistpl %0":"=m"(i):"m"(d))' \
-fomit-frame-pointer
CONFIG = -D_POSIX_SOURCE -DPOPEN $(DEBUG) $(OPTIMIZE)
# Compilation parameters
CC = gcc
CWARNS = -Wall -pedantic \
-Waggregate-return \
-Wcast-align \
-Wmissing-prototypes \
-Wstrict-prototypes \
-Wnested-externs \
-Wpointer-arith \
-Wshadow \
-Wwrite-strings \
# -Wtraditional \
# -Wcast-qual
CFLAGS = $(CONFIG) $(CWARNS) -ansi
# To make early versions
CO_OPTIONS =
AR = ar
ARFLAGS = rvl
# Aplication modules
LUAOBJS = \
lstate.o \
lapi.o \
lmem.o \
lstring.o \
ltable.o \
ltm.o \
lvm.o \
ldo.o \
lobject.o \
lfunc.o \
lgc.o \
lcode.o \
lparser.o \
llex.o \
lopcodes.o \
lundump.o \
lzio.o \
ldebug.o \
ltests.o
LIBOBJS = \
lauxlib.o \
lbaselib.o \
ltablib.o \
lmathlib.o \
liolib.o \
lstrlib.o \
ldblib.o
lua : lua.o liblua.a liblualib.a
$(CC) $(CFLAGS) -o $@ lua.o -L. -llua -llualib -lm
liblua.a : $(LUAOBJS)
$(AR) $(ARFLAGS) $@ $?
ranlib $@
liblualib.a : $(LIBOBJS)
$(AR) $(ARFLAGS) $@ $?
ranlib $@
liblua.so.1.0 : lua.o
ld -o liblua.so.1.0 $(LUAOBJS)
clear :
rcsclean
rm -f *.o *.a
%.h : RCS/%.h,v
co $(CO_OPTIONS) $@
%.c : RCS/%.c,v
co $(CO_OPTIONS) $@
lapi.o: lapi.c lua.h lapi.h lobject.h llimits.h ldebug.h lstate.h \
ltm.h ldo.h lzio.h lfunc.h lgc.h lmem.h lstring.h ltable.h lundump.h \
lvm.h
lauxlib.o: lauxlib.c lua.h lauxlib.h
lbaselib.o: lbaselib.c lua.h lauxlib.h lualib.h
lcode.o: lcode.c lua.h lcode.h llex.h lobject.h llimits.h lzio.h \
lopcodes.h lparser.h ltable.h ldebug.h lstate.h ltm.h ldo.h lmem.h
ldblib.o: ldblib.c lua.h lauxlib.h lualib.h
ldebug.o: ldebug.c lua.h lapi.h lobject.h llimits.h lcode.h llex.h \
lzio.h lopcodes.h lparser.h ltable.h ldebug.h lstate.h ltm.h ldo.h \
lfunc.h lstring.h lvm.h
ldo.o: ldo.c lua.h ldebug.h lstate.h lobject.h llimits.h ltm.h ldo.h \
lzio.h lfunc.h lgc.h lmem.h lopcodes.h lparser.h ltable.h lstring.h \
lundump.h lvm.h
lfunc.o: lfunc.c lua.h lfunc.h lobject.h llimits.h lmem.h lstate.h \
ltm.h
lgc.o: lgc.c lua.h ldebug.h lstate.h lobject.h llimits.h ltm.h ldo.h \
lzio.h lfunc.h lgc.h lmem.h lstring.h ltable.h
liolib.o: liolib.c lua.h lauxlib.h lualib.h
llex.o: llex.c lua.h ldo.h lobject.h llimits.h lstate.h ltm.h lzio.h \
llex.h lparser.h ltable.h lstring.h
lmathlib.o: lmathlib.c lua.h lauxlib.h lualib.h
lmem.o: lmem.c lua.h ldebug.h lstate.h lobject.h llimits.h ltm.h ldo.h \
lzio.h lmem.h
lobject.o: lobject.c lua.h ldo.h lobject.h llimits.h lstate.h ltm.h \
lzio.h lmem.h lstring.h lvm.h
lopcodes.o: lopcodes.c lua.h lobject.h llimits.h lopcodes.h
lparser.o: lparser.c lua.h lcode.h llex.h lobject.h llimits.h lzio.h \
lopcodes.h lparser.h ltable.h ldebug.h lstate.h ltm.h lfunc.h lmem.h \
lstring.h
lstate.o: lstate.c lua.h ldebug.h lstate.h lobject.h llimits.h ltm.h \
ldo.h lzio.h lfunc.h lgc.h llex.h lmem.h lstring.h ltable.h
lstring.o: lstring.c lua.h lmem.h llimits.h lobject.h lstate.h ltm.h \
lstring.h
lstrlib.o: lstrlib.c lua.h lauxlib.h lualib.h
ltable.o: ltable.c lua.h ldebug.h lstate.h lobject.h llimits.h ltm.h \
ldo.h lzio.h lmem.h ltable.h
ltablib.o: ltablib.c lua.h lauxlib.h lualib.h
ltests.o: ltests.c lua.h lapi.h lobject.h llimits.h lauxlib.h lcode.h \
llex.h lzio.h lopcodes.h lparser.h ltable.h ldebug.h lstate.h ltm.h \
ldo.h lfunc.h lmem.h lstring.h lualib.h
ltm.o: ltm.c lua.h lobject.h llimits.h lstate.h ltm.h lstring.h \
ltable.h
lua.o: lua.c lua.h lauxlib.h lualib.h
lundump.o: lundump.c lua.h ldebug.h lstate.h lobject.h llimits.h ltm.h \
lfunc.h lmem.h lopcodes.h lstring.h lundump.h lzio.h
lvm.o: lvm.c lua.h ldebug.h lstate.h lobject.h llimits.h ltm.h ldo.h \
lzio.h lfunc.h lgc.h lopcodes.h lstring.h ltable.h lvm.h
lzio.o: lzio.c lua.h llimits.h lzio.h

4298
manual.tex

File diff suppressed because it is too large Load Diff

234
mathlib.c Normal file
View File

@@ -0,0 +1,234 @@
/*
** mathlib.c
** Mathematica library to LUA
**
** Waldemar Celes Filho
** TeCGraf - PUC-Rio
** 19 May 93
*/
#include <stdio.h> /* NULL */
#include <math.h>
#include "lua.h"
static void math_abs (void)
{
double d;
lua_Object o = lua_getparam (1);
if (o == NULL)
{ lua_error ("too few arguments to function `abs'"); return; }
if (!lua_isnumber(o))
{ lua_error ("incorrect arguments to function `abs'"); return; }
d = lua_getnumber(o);
if (d < 0) d = -d;
lua_pushnumber (d);
}
static void math_sin (void)
{
double d;
lua_Object o = lua_getparam (1);
if (o == NULL)
{ lua_error ("too few arguments to function `sin'"); return; }
if (!lua_isnumber(o))
{ lua_error ("incorrect arguments to function `sin'"); return; }
d = lua_getnumber(o);
lua_pushnumber (sin(d));
}
static void math_cos (void)
{
double d;
lua_Object o = lua_getparam (1);
if (o == NULL)
{ lua_error ("too few arguments to function `cos'"); return; }
if (!lua_isnumber(o))
{ lua_error ("incorrect arguments to function `cos'"); return; }
d = lua_getnumber(o);
lua_pushnumber (cos(d));
}
static void math_tan (void)
{
double d;
lua_Object o = lua_getparam (1);
if (o == NULL)
{ lua_error ("too few arguments to function `tan'"); return; }
if (!lua_isnumber(o))
{ lua_error ("incorrect arguments to function `tan'"); return; }
d = lua_getnumber(o);
lua_pushnumber (tan(d));
}
static void math_asin (void)
{
double d;
lua_Object o = lua_getparam (1);
if (o == NULL)
{ lua_error ("too few arguments to function `asin'"); return; }
if (!lua_isnumber(o))
{ lua_error ("incorrect arguments to function `asin'"); return; }
d = lua_getnumber(o);
lua_pushnumber (asin(d));
}
static void math_acos (void)
{
double d;
lua_Object o = lua_getparam (1);
if (o == NULL)
{ lua_error ("too few arguments to function `acos'"); return; }
if (!lua_isnumber(o))
{ lua_error ("incorrect arguments to function `acos'"); return; }
d = lua_getnumber(o);
lua_pushnumber (acos(d));
}
static void math_atan (void)
{
double d;
lua_Object o = lua_getparam (1);
if (o == NULL)
{ lua_error ("too few arguments to function `atan'"); return; }
if (!lua_isnumber(o))
{ lua_error ("incorrect arguments to function `atan'"); return; }
d = lua_getnumber(o);
lua_pushnumber (atan(d));
}
static void math_ceil (void)
{
double d;
lua_Object o = lua_getparam (1);
if (o == NULL)
{ lua_error ("too few arguments to function `ceil'"); return; }
if (!lua_isnumber(o))
{ lua_error ("incorrect arguments to function `ceil'"); return; }
d = lua_getnumber(o);
lua_pushnumber (ceil(d));
}
static void math_floor (void)
{
double d;
lua_Object o = lua_getparam (1);
if (o == NULL)
{ lua_error ("too few arguments to function `floor'"); return; }
if (!lua_isnumber(o))
{ lua_error ("incorrect arguments to function `floor'"); return; }
d = lua_getnumber(o);
lua_pushnumber (floor(d));
}
static void math_mod (void)
{
int d1, d2;
lua_Object o1 = lua_getparam (1);
lua_Object o2 = lua_getparam (2);
if (!lua_isnumber(o1) || !lua_isnumber(o2))
{ lua_error ("incorrect arguments to function `mod'"); return; }
d1 = (int) lua_getnumber(o1);
d2 = (int) lua_getnumber(o2);
lua_pushnumber (d1%d2);
}
static void math_sqrt (void)
{
double d;
lua_Object o = lua_getparam (1);
if (o == NULL)
{ lua_error ("too few arguments to function `sqrt'"); return; }
if (!lua_isnumber(o))
{ lua_error ("incorrect arguments to function `sqrt'"); return; }
d = lua_getnumber(o);
lua_pushnumber (sqrt(d));
}
static void math_pow (void)
{
double d1, d2;
lua_Object o1 = lua_getparam (1);
lua_Object o2 = lua_getparam (2);
if (!lua_isnumber(o1) || !lua_isnumber(o2))
{ lua_error ("incorrect arguments to function `pow'"); return; }
d1 = lua_getnumber(o1);
d2 = lua_getnumber(o2);
lua_pushnumber (pow(d1,d2));
}
static void math_min (void)
{
int i=1;
double d, dmin;
lua_Object o;
if ((o = lua_getparam(i++)) == NULL)
{ lua_error ("too few arguments to function `min'"); return; }
if (!lua_isnumber(o))
{ lua_error ("incorrect arguments to function `min'"); return; }
dmin = lua_getnumber (o);
while ((o = lua_getparam(i++)) != NULL)
{
if (!lua_isnumber(o))
{ lua_error ("incorrect arguments to function `min'"); return; }
d = lua_getnumber (o);
if (d < dmin) dmin = d;
}
lua_pushnumber (dmin);
}
static void math_max (void)
{
int i=1;
double d, dmax;
lua_Object o;
if ((o = lua_getparam(i++)) == NULL)
{ lua_error ("too few arguments to function `max'"); return; }
if (!lua_isnumber(o))
{ lua_error ("incorrect arguments to function `max'"); return; }
dmax = lua_getnumber (o);
while ((o = lua_getparam(i++)) != NULL)
{
if (!lua_isnumber(o))
{ lua_error ("incorrect arguments to function `max'"); return; }
d = lua_getnumber (o);
if (d > dmax) dmax = d;
}
lua_pushnumber (dmax);
}
/*
** Open math library
*/
void mathlib_open (void)
{
lua_register ("abs", math_abs);
lua_register ("sin", math_sin);
lua_register ("cos", math_cos);
lua_register ("tan", math_tan);
lua_register ("asin", math_asin);
lua_register ("acos", math_acos);
lua_register ("atan", math_atan);
lua_register ("ceil", math_ceil);
lua_register ("floor", math_floor);
lua_register ("mod", math_mod);
lua_register ("sqrt", math_sqrt);
lua_register ("pow", math_pow);
lua_register ("min", math_min);
lua_register ("max", math_max);
}

933
opcode.c Normal file
View File

@@ -0,0 +1,933 @@
/*
** opcode.c
** TecCGraf - PUC-Rio
** 26 Apr 93
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#ifdef __GNUC__
#include <floatingpoint.h>
#endif
#include "opcode.h"
#include "hash.h"
#include "inout.h"
#include "table.h"
#include "lua.h"
#define tonumber(o) ((tag(o) != T_NUMBER) && (lua_tonumber(o) != 0))
#define tostring(o) ((tag(o) != T_STRING) && (lua_tostring(o) != 0))
#ifndef MAXSTACK
#define MAXSTACK 256
#endif
static Object stack[MAXSTACK] = {{T_MARK, {NULL}}};
static Object *top=stack+1, *base=stack+1;
/*
** Concatenate two given string, creating a mark space at the beginning.
** Return the new string pointer.
*/
static char *lua_strconc (char *l, char *r)
{
char *s = calloc (strlen(l)+strlen(r)+2, sizeof(char));
if (s == NULL)
{
lua_error ("not enough memory");
return NULL;
}
*s++ = 0; /* create mark space */
return strcat(strcpy(s,l),r);
}
/*
** Duplicate a string, creating a mark space at the beginning.
** Return the new string pointer.
*/
char *lua_strdup (char *l)
{
char *s = calloc (strlen(l)+2, sizeof(char));
if (s == NULL)
{
lua_error ("not enough memory");
return NULL;
}
*s++ = 0; /* create mark space */
return strcpy(s,l);
}
/*
** Convert, if possible, to a number tag.
** Return 0 in success or not 0 on error.
*/
static int lua_tonumber (Object *obj)
{
char *ptr;
if (tag(obj) != T_STRING)
{
lua_reportbug ("unexpected type at conversion to number");
return 1;
}
nvalue(obj) = strtod(svalue(obj), &ptr);
if (*ptr)
{
lua_reportbug ("string to number convertion failed");
return 2;
}
tag(obj) = T_NUMBER;
return 0;
}
/*
** Test if is possible to convert an object to a number one.
** If possible, return the converted object, otherwise return nil object.
*/
static Object *lua_convtonumber (Object *obj)
{
static Object cvt;
if (tag(obj) == T_NUMBER)
{
cvt = *obj;
return &cvt;
}
tag(&cvt) = T_NIL;
if (tag(obj) == T_STRING)
{
char *ptr;
nvalue(&cvt) = strtod(svalue(obj), &ptr);
if (*ptr == 0)
tag(&cvt) = T_NUMBER;
}
return &cvt;
}
/*
** Convert, if possible, to a string tag
** Return 0 in success or not 0 on error.
*/
static int lua_tostring (Object *obj)
{
static char s[256];
if (tag(obj) != T_NUMBER)
{
lua_reportbug ("unexpected type at conversion to string");
return 1;
}
if ((int) nvalue(obj) == nvalue(obj))
sprintf (s, "%d", (int) nvalue(obj));
else
sprintf (s, "%g", nvalue(obj));
svalue(obj) = lua_createstring(lua_strdup(s));
if (svalue(obj) == NULL)
return 1;
tag(obj) = T_STRING;
return 0;
}
/*
** Execute the given opcode. Return 0 in success or 1 on error.
*/
int lua_execute (Byte *pc)
{
while (1)
{
switch ((OpCode)*pc++)
{
case NOP: break;
case PUSHNIL: tag(top++) = T_NIL; break;
case PUSH0: tag(top) = T_NUMBER; nvalue(top++) = 0; break;
case PUSH1: tag(top) = T_NUMBER; nvalue(top++) = 1; break;
case PUSH2: tag(top) = T_NUMBER; nvalue(top++) = 2; break;
case PUSHBYTE: tag(top) = T_NUMBER; nvalue(top++) = *pc++; break;
case PUSHWORD:
tag(top) = T_NUMBER; nvalue(top++) = *((Word *)(pc)); pc += sizeof(Word);
break;
case PUSHFLOAT:
tag(top) = T_NUMBER; nvalue(top++) = *((float *)(pc)); pc += sizeof(float);
break;
case PUSHSTRING:
{
int w = *((Word *)(pc));
pc += sizeof(Word);
tag(top) = T_STRING; svalue(top++) = lua_constant[w];
}
break;
case PUSHLOCAL0: *top++ = *(base + 0); break;
case PUSHLOCAL1: *top++ = *(base + 1); break;
case PUSHLOCAL2: *top++ = *(base + 2); break;
case PUSHLOCAL3: *top++ = *(base + 3); break;
case PUSHLOCAL4: *top++ = *(base + 4); break;
case PUSHLOCAL5: *top++ = *(base + 5); break;
case PUSHLOCAL6: *top++ = *(base + 6); break;
case PUSHLOCAL7: *top++ = *(base + 7); break;
case PUSHLOCAL8: *top++ = *(base + 8); break;
case PUSHLOCAL9: *top++ = *(base + 9); break;
case PUSHLOCAL: *top++ = *(base + (*pc++)); break;
case PUSHGLOBAL:
*top++ = s_object(*((Word *)(pc))); pc += sizeof(Word);
break;
case PUSHINDEXED:
--top;
if (tag(top-1) != T_ARRAY)
{
lua_reportbug ("indexed expression not a table");
return 1;
}
{
Object *h = lua_hashdefine (avalue(top-1), top);
if (h == NULL) return 1;
*(top-1) = *h;
}
break;
case PUSHMARK: tag(top++) = T_MARK; break;
case PUSHOBJECT: *top = *(top-3); top++; break;
case STORELOCAL0: *(base + 0) = *(--top); break;
case STORELOCAL1: *(base + 1) = *(--top); break;
case STORELOCAL2: *(base + 2) = *(--top); break;
case STORELOCAL3: *(base + 3) = *(--top); break;
case STORELOCAL4: *(base + 4) = *(--top); break;
case STORELOCAL5: *(base + 5) = *(--top); break;
case STORELOCAL6: *(base + 6) = *(--top); break;
case STORELOCAL7: *(base + 7) = *(--top); break;
case STORELOCAL8: *(base + 8) = *(--top); break;
case STORELOCAL9: *(base + 9) = *(--top); break;
case STORELOCAL: *(base + (*pc++)) = *(--top); break;
case STOREGLOBAL:
s_object(*((Word *)(pc))) = *(--top); pc += sizeof(Word);
break;
case STOREINDEXED0:
if (tag(top-3) != T_ARRAY)
{
lua_reportbug ("indexed expression not a table");
return 1;
}
{
Object *h = lua_hashdefine (avalue(top-3), top-2);
if (h == NULL) return 1;
*h = *(top-1);
}
top -= 3;
break;
case STOREINDEXED:
{
int n = *pc++;
if (tag(top-3-n) != T_ARRAY)
{
lua_reportbug ("indexed expression not a table");
return 1;
}
{
Object *h = lua_hashdefine (avalue(top-3-n), top-2-n);
if (h == NULL) return 1;
*h = *(top-1);
}
--top;
}
break;
case STOREFIELD:
if (tag(top-3) != T_ARRAY)
{
lua_error ("internal error - table expected");
return 1;
}
*(lua_hashdefine (avalue(top-3), top-2)) = *(top-1);
top -= 2;
break;
case ADJUST:
{
Object *newtop = base + *(pc++);
if (top != newtop)
{
while (top < newtop) tag(top++) = T_NIL;
top = newtop;
}
}
break;
case CREATEARRAY:
if (tag(top-1) == T_NIL)
nvalue(top-1) = 101;
else
{
if (tonumber(top-1)) return 1;
if (nvalue(top-1) <= 0) nvalue(top-1) = 101;
}
avalue(top-1) = lua_createarray(lua_hashcreate(nvalue(top-1)));
if (avalue(top-1) == NULL)
return 1;
tag(top-1) = T_ARRAY;
break;
case EQOP:
{
Object *l = top-2;
Object *r = top-1;
--top;
if (tag(l) != tag(r))
tag(top-1) = T_NIL;
else
{
switch (tag(l))
{
case T_NIL: tag(top-1) = T_NUMBER; break;
case T_NUMBER: tag(top-1) = (nvalue(l) == nvalue(r)) ? T_NUMBER : T_NIL; break;
case T_ARRAY: tag(top-1) = (avalue(l) == avalue(r)) ? T_NUMBER : T_NIL; break;
case T_FUNCTION: tag(top-1) = (bvalue(l) == bvalue(r)) ? T_NUMBER : T_NIL; break;
case T_CFUNCTION: tag(top-1) = (fvalue(l) == fvalue(r)) ? T_NUMBER : T_NIL; break;
case T_USERDATA: tag(top-1) = (uvalue(l) == uvalue(r)) ? T_NUMBER : T_NIL; break;
case T_STRING: tag(top-1) = (strcmp (svalue(l), svalue(r)) == 0) ? T_NUMBER : T_NIL; break;
case T_MARK: return 1;
}
}
nvalue(top-1) = 1;
}
break;
case LTOP:
{
Object *l = top-2;
Object *r = top-1;
--top;
if (tag(l) == T_NUMBER && tag(r) == T_NUMBER)
tag(top-1) = (nvalue(l) < nvalue(r)) ? T_NUMBER : T_NIL;
else
{
if (tostring(l) || tostring(r))
return 1;
tag(top-1) = (strcmp (svalue(l), svalue(r)) < 0) ? T_NUMBER : T_NIL;
}
nvalue(top-1) = 1;
}
break;
case LEOP:
{
Object *l = top-2;
Object *r = top-1;
--top;
if (tag(l) == T_NUMBER && tag(r) == T_NUMBER)
tag(top-1) = (nvalue(l) <= nvalue(r)) ? T_NUMBER : T_NIL;
else
{
if (tostring(l) || tostring(r))
return 1;
tag(top-1) = (strcmp (svalue(l), svalue(r)) <= 0) ? T_NUMBER : T_NIL;
}
nvalue(top-1) = 1;
}
break;
case ADDOP:
{
Object *l = top-2;
Object *r = top-1;
if (tonumber(r) || tonumber(l))
return 1;
nvalue(l) += nvalue(r);
--top;
}
break;
case SUBOP:
{
Object *l = top-2;
Object *r = top-1;
if (tonumber(r) || tonumber(l))
return 1;
nvalue(l) -= nvalue(r);
--top;
}
break;
case MULTOP:
{
Object *l = top-2;
Object *r = top-1;
if (tonumber(r) || tonumber(l))
return 1;
nvalue(l) *= nvalue(r);
--top;
}
break;
case DIVOP:
{
Object *l = top-2;
Object *r = top-1;
if (tonumber(r) || tonumber(l))
return 1;
nvalue(l) /= nvalue(r);
--top;
}
break;
case CONCOP:
{
Object *l = top-2;
Object *r = top-1;
if (tostring(r) || tostring(l))
return 1;
svalue(l) = lua_createstring (lua_strconc(svalue(l),svalue(r)));
if (svalue(l) == NULL)
return 1;
--top;
}
break;
case MINUSOP:
if (tonumber(top-1))
return 1;
nvalue(top-1) = - nvalue(top-1);
break;
case NOTOP:
tag(top-1) = tag(top-1) == T_NIL ? T_NUMBER : T_NIL;
break;
case ONTJMP:
{
int n = *((Word *)(pc));
pc += sizeof(Word);
if (tag(top-1) != T_NIL) pc += n;
}
break;
case ONFJMP:
{
int n = *((Word *)(pc));
pc += sizeof(Word);
if (tag(top-1) == T_NIL) pc += n;
}
break;
case JMP: pc += *((Word *)(pc)) + sizeof(Word); break;
case UPJMP: pc -= *((Word *)(pc)) - sizeof(Word); break;
case IFFJMP:
{
int n = *((Word *)(pc));
pc += sizeof(Word);
top--;
if (tag(top) == T_NIL) pc += n;
}
break;
case IFFUPJMP:
{
int n = *((Word *)(pc));
pc += sizeof(Word);
top--;
if (tag(top) == T_NIL) pc -= n;
}
break;
case POP: --top; break;
case CALLFUNC:
{
Byte *newpc;
Object *b = top-1;
while (tag(b) != T_MARK) b--;
if (tag(b-1) == T_FUNCTION)
{
lua_debugline = 0; /* always reset debug flag */
newpc = bvalue(b-1);
bvalue(b-1) = pc; /* store return code */
nvalue(b) = (base-stack); /* store base value */
base = b+1;
pc = newpc;
if (MAXSTACK-(base-stack) < STACKGAP)
{
lua_error ("stack overflow");
return 1;
}
}
else if (tag(b-1) == T_CFUNCTION)
{
int nparam;
lua_debugline = 0; /* always reset debug flag */
nvalue(b) = (base-stack); /* store base value */
base = b+1;
nparam = top-base; /* number of parameters */
(fvalue(b-1))(); /* call C function */
/* shift returned values */
{
int i;
int nretval = top - base - nparam;
top = base - 2;
base = stack + (int) nvalue(base-1);
for (i=0; i<nretval; i++)
{
*top = *(top+nparam+2);
++top;
}
}
}
else
{
lua_reportbug ("call expression not a function");
return 1;
}
}
break;
case RETCODE:
{
int i;
int shift = *pc++;
int nretval = top - base - shift;
top = base - 2;
pc = bvalue(base-2);
base = stack + (int) nvalue(base-1);
for (i=0; i<nretval; i++)
{
*top = *(top+shift+2);
++top;
}
}
break;
case HALT:
return 0; /* success */
case SETFUNCTION:
{
int file, func;
file = *((Word *)(pc));
pc += sizeof(Word);
func = *((Word *)(pc));
pc += sizeof(Word);
if (lua_pushfunction (file, func))
return 1;
}
break;
case SETLINE:
lua_debugline = *((Word *)(pc));
pc += sizeof(Word);
break;
case RESET:
lua_popfunction ();
break;
default:
lua_error ("internal error - opcode didn't match");
return 1;
}
}
}
/*
** Mark all strings and arrays used by any object stored at stack.
*/
void lua_markstack (void)
{
Object *o;
for (o = top-1; o >= stack; o--)
lua_markobject (o);
}
/*
** Open file, generate opcode and execute global statement. Return 0 on
** success or 1 on error.
*/
int lua_dofile (char *filename)
{
if (lua_openfile (filename)) return 1;
if (lua_parse ()) { lua_closefile (); return 1; }
lua_closefile ();
return 0;
}
/*
** Generate opcode stored on string and execute global statement. Return 0 on
** success or 1 on error.
*/
int lua_dostring (char *string)
{
if (lua_openstring (string)) return 1;
if (lua_parse ()) return 1;
return 0;
}
/*
** Execute the given function. Return 0 on success or 1 on error.
*/
int lua_call (char *functionname, int nparam)
{
static Byte startcode[] = {CALLFUNC, HALT};
int i;
Object func = s_object(lua_findsymbol(functionname));
if (tag(&func) != T_FUNCTION) return 1;
for (i=1; i<=nparam; i++)
*(top-i+2) = *(top-i);
top += 2;
tag(top-nparam-1) = T_MARK;
*(top-nparam-2) = func;
return (lua_execute (startcode));
}
/*
** Get a parameter, returning the object handle or NULL on error.
** 'number' must be 1 to get the first parameter.
*/
Object *lua_getparam (int number)
{
if (number <= 0 || number > top-base) return NULL;
return (base+number-1);
}
/*
** Given an object handle, return its number value. On error, return 0.0.
*/
real lua_getnumber (Object *object)
{
if (tonumber (object)) return 0.0;
else return (nvalue(object));
}
/*
** Given an object handle, return its string pointer. On error, return NULL.
*/
char *lua_getstring (Object *object)
{
if (tostring (object)) return NULL;
else return (svalue(object));
}
/*
** Given an object handle, return a copy of its string. On error, return NULL.
*/
char *lua_copystring (Object *object)
{
if (tostring (object)) return NULL;
else return (strdup(svalue(object)));
}
/*
** Given an object handle, return its cfuntion pointer. On error, return NULL.
*/
lua_CFunction lua_getcfunction (Object *object)
{
if (tag(object) != T_CFUNCTION) return NULL;
else return (fvalue(object));
}
/*
** Given an object handle, return its user data. On error, return NULL.
*/
void *lua_getuserdata (Object *object)
{
if (tag(object) != T_USERDATA) return NULL;
else return (uvalue(object));
}
/*
** Given an object handle and a field name, return its field object.
** On error, return NULL.
*/
Object *lua_getfield (Object *object, char *field)
{
if (tag(object) != T_ARRAY)
return NULL;
else
{
Object ref;
tag(&ref) = T_STRING;
svalue(&ref) = lua_createstring(lua_strdup(field));
return (lua_hashdefine(avalue(object), &ref));
}
}
/*
** Given an object handle and an index, return its indexed object.
** On error, return NULL.
*/
Object *lua_getindexed (Object *object, float index)
{
if (tag(object) != T_ARRAY)
return NULL;
else
{
Object ref;
tag(&ref) = T_NUMBER;
nvalue(&ref) = index;
return (lua_hashdefine(avalue(object), &ref));
}
}
/*
** Get a global object. Return the object handle or NULL on error.
*/
Object *lua_getglobal (char *name)
{
int n = lua_findsymbol(name);
if (n < 0) return NULL;
return &s_object(n);
}
/*
** Pop and return an object
*/
Object *lua_pop (void)
{
if (top <= base) return NULL;
top--;
return top;
}
/*
** Push a nil object
*/
int lua_pushnil (void)
{
if ((top-stack) >= MAXSTACK-1)
{
lua_error ("stack overflow");
return 1;
}
tag(top) = T_NIL;
return 0;
}
/*
** Push an object (tag=number) to stack. Return 0 on success or 1 on error.
*/
int lua_pushnumber (real n)
{
if ((top-stack) >= MAXSTACK-1)
{
lua_error ("stack overflow");
return 1;
}
tag(top) = T_NUMBER; nvalue(top++) = n;
return 0;
}
/*
** Push an object (tag=string) to stack. Return 0 on success or 1 on error.
*/
int lua_pushstring (char *s)
{
if ((top-stack) >= MAXSTACK-1)
{
lua_error ("stack overflow");
return 1;
}
tag(top) = T_STRING;
svalue(top++) = lua_createstring(lua_strdup(s));
return 0;
}
/*
** Push an object (tag=cfunction) to stack. Return 0 on success or 1 on error.
*/
int lua_pushcfunction (lua_CFunction fn)
{
if ((top-stack) >= MAXSTACK-1)
{
lua_error ("stack overflow");
return 1;
}
tag(top) = T_CFUNCTION; fvalue(top++) = fn;
return 0;
}
/*
** Push an object (tag=userdata) to stack. Return 0 on success or 1 on error.
*/
int lua_pushuserdata (void *u)
{
if ((top-stack) >= MAXSTACK-1)
{
lua_error ("stack overflow");
return 1;
}
tag(top) = T_USERDATA; uvalue(top++) = u;
return 0;
}
/*
** Push an object to stack.
*/
int lua_pushobject (Object *o)
{
if ((top-stack) >= MAXSTACK-1)
{
lua_error ("stack overflow");
return 1;
}
*top++ = *o;
return 0;
}
/*
** Store top of the stack at a global variable array field.
** Return 1 on error, 0 on success.
*/
int lua_storeglobal (char *name)
{
int n = lua_findsymbol (name);
if (n < 0) return 1;
if (tag(top-1) == T_MARK) return 1;
s_object(n) = *(--top);
return 0;
}
/*
** Store top of the stack at an array field. Return 1 on error, 0 on success.
*/
int lua_storefield (lua_Object object, char *field)
{
if (tag(object) != T_ARRAY)
return 1;
else
{
Object ref, *h;
tag(&ref) = T_STRING;
svalue(&ref) = lua_createstring(lua_strdup(field));
h = lua_hashdefine(avalue(object), &ref);
if (h == NULL) return 1;
if (tag(top-1) == T_MARK) return 1;
*h = *(--top);
}
return 0;
}
/*
** Store top of the stack at an array index. Return 1 on error, 0 on success.
*/
int lua_storeindexed (lua_Object object, float index)
{
if (tag(object) != T_ARRAY)
return 1;
else
{
Object ref, *h;
tag(&ref) = T_NUMBER;
nvalue(&ref) = index;
h = lua_hashdefine(avalue(object), &ref);
if (h == NULL) return 1;
if (tag(top-1) == T_MARK) return 1;
*h = *(--top);
}
return 0;
}
/*
** Given an object handle, return if it is nil.
*/
int lua_isnil (Object *object)
{
return (object != NULL && tag(object) == T_NIL);
}
/*
** Given an object handle, return if it is a number one.
*/
int lua_isnumber (Object *object)
{
return (object != NULL && tag(object) == T_NUMBER);
}
/*
** Given an object handle, return if it is a string one.
*/
int lua_isstring (Object *object)
{
return (object != NULL && tag(object) == T_STRING);
}
/*
** Given an object handle, return if it is an array one.
*/
int lua_istable (Object *object)
{
return (object != NULL && tag(object) == T_ARRAY);
}
/*
** Given an object handle, return if it is a cfunction one.
*/
int lua_iscfunction (Object *object)
{
return (object != NULL && tag(object) == T_CFUNCTION);
}
/*
** Given an object handle, return if it is an user data one.
*/
int lua_isuserdata (Object *object)
{
return (object != NULL && tag(object) == T_USERDATA);
}
/*
** Internal function: return an object type.
*/
void lua_type (void)
{
Object *o = lua_getparam(1);
lua_pushstring (lua_constant[tag(o)]);
}
/*
** Internal function: convert an object to a number
*/
void lua_obj2number (void)
{
Object *o = lua_getparam(1);
lua_pushobject (lua_convtonumber(o));
}
/*
** Internal function: print object values
*/
void lua_print (void)
{
int i=1;
void *obj;
while ((obj=lua_getparam (i++)) != NULL)
{
if (lua_isnumber(obj)) printf("%g\n",lua_getnumber (obj));
else if (lua_isstring(obj)) printf("%s\n",lua_getstring (obj));
else if (lua_iscfunction(obj)) printf("cfunction: %p\n",lua_getcfunction (obj));
else if (lua_isuserdata(obj)) printf("userdata: %p\n",lua_getuserdata (obj));
else if (lua_istable(obj)) printf("table: %p\n",obj);
else if (lua_isnil(obj)) printf("nil\n");
else printf("invalid value to print\n");
}
}

144
opcode.h Normal file
View File

@@ -0,0 +1,144 @@
/*
** opcode.h
** TeCGraf - PUC-Rio
** 16 Apr 92
*/
#ifndef opcode_h
#define opcode_h
#ifndef STACKGAP
#define STACKGAP 128
#endif
#ifndef real
#define real float
#endif
typedef unsigned char Byte;
typedef unsigned short Word;
typedef enum
{
NOP,
PUSHNIL,
PUSH0, PUSH1, PUSH2,
PUSHBYTE,
PUSHWORD,
PUSHFLOAT,
PUSHSTRING,
PUSHLOCAL0, PUSHLOCAL1, PUSHLOCAL2, PUSHLOCAL3, PUSHLOCAL4,
PUSHLOCAL5, PUSHLOCAL6, PUSHLOCAL7, PUSHLOCAL8, PUSHLOCAL9,
PUSHLOCAL,
PUSHGLOBAL,
PUSHINDEXED,
PUSHMARK,
PUSHOBJECT,
STORELOCAL0, STORELOCAL1, STORELOCAL2, STORELOCAL3, STORELOCAL4,
STORELOCAL5, STORELOCAL6, STORELOCAL7, STORELOCAL8, STORELOCAL9,
STORELOCAL,
STOREGLOBAL,
STOREINDEXED0,
STOREINDEXED,
STOREFIELD,
ADJUST,
CREATEARRAY,
EQOP,
LTOP,
LEOP,
ADDOP,
SUBOP,
MULTOP,
DIVOP,
CONCOP,
MINUSOP,
NOTOP,
ONTJMP,
ONFJMP,
JMP,
UPJMP,
IFFJMP,
IFFUPJMP,
POP,
CALLFUNC,
RETCODE,
HALT,
SETFUNCTION,
SETLINE,
RESET
} OpCode;
typedef enum
{
T_MARK,
T_NIL,
T_NUMBER,
T_STRING,
T_ARRAY,
T_FUNCTION,
T_CFUNCTION,
T_USERDATA
} Type;
typedef void (*Cfunction) (void);
typedef int (*Input) (void);
typedef void (*Unput) (int );
typedef union
{
Cfunction f;
real n;
char *s;
Byte *b;
struct Hash *a;
void *u;
} Value;
typedef struct Object
{
Type tag;
Value value;
} Object;
typedef struct
{
char *name;
Object object;
} Symbol;
/* Macros to access structure members */
#define tag(o) ((o)->tag)
#define nvalue(o) ((o)->value.n)
#define svalue(o) ((o)->value.s)
#define bvalue(o) ((o)->value.b)
#define avalue(o) ((o)->value.a)
#define fvalue(o) ((o)->value.f)
#define uvalue(o) ((o)->value.u)
/* Macros to access symbol table */
#define s_name(i) (lua_table[i].name)
#define s_object(i) (lua_table[i].object)
#define s_tag(i) (tag(&s_object(i)))
#define s_nvalue(i) (nvalue(&s_object(i)))
#define s_svalue(i) (svalue(&s_object(i)))
#define s_bvalue(i) (bvalue(&s_object(i)))
#define s_avalue(i) (avalue(&s_object(i)))
#define s_fvalue(i) (fvalue(&s_object(i)))
#define s_uvalue(i) (uvalue(&s_object(i)))
/* Exported functions */
int lua_execute (Byte *pc);
void lua_markstack (void);
char *lua_strdup (char *l);
void lua_setinput (Input fn); /* from "lua.lex" module */
void lua_setunput (Unput fn); /* from "lua.lex" module */
char *lua_lasttext (void); /* from "lua.lex" module */
int lua_parse (void); /* from "lua.stx" module */
void lua_type (void);
void lua_obj2number (void);
void lua_print (void);
#endif

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save.lua Normal file
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$debug
function savevar (n,v)
if v = nil then return end;
if type(v) = "number" then print(n.."="..v) return end
if type(v) = "string" then print(n.."='"..v.."'") return end
if type(v) = "table" then
if v.__visited__ ~= nil then
print(n .. "=" .. v.__visited__);
else
print(n.."=@()")
v.__visited__ = n;
local r,f;
r,f = next(v,nil);
while r ~= nil do
if r ~= "__visited__" then
if type(r) = 'string' then
savevar(n.."['"..r.."']",f)
else
savevar(n.."["..r.."]",f)
end
end
r,f = next(v,r)
end
end
end
end
function save ()
local n,v
n,v = nextvar(nil)
while n ~= nil do
savevar(n,v);
n,v = nextvar(n)
end
end
a = 3
x = @{a = 4, b = "name", l=@[4,5,67]}
b = @{t=5}
x.next = b
save()

56
sort.lua Normal file
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$debug
function quicksort(r,s)
if s<=r then return end -- caso basico da recursao
local v=x[r]
local i=r
local j=s+1
i=i+1; while x[i]<v do i=i+1 end
j=j-1; while x[j]>v do j=j-1 end
x[i],x[j]=x[j],x[i]
while j>i do -- separacao
i=i+1; while x[i]<v do i=i+1 end
j=j-1; while x[j]>v do j=j-1 end
x[i],x[j]=x[j],x[i]
end
x[i],x[j]=x[j],x[i] -- undo last swap
x[j],x[r]=x[r],x[j]
quicksort(r,j-1) -- recursao
quicksort(j+1,s)
end
function sort(a,n) -- selection sort
local i=1
while i<=n do
local m=i
local j=i+1
while j<=n do
if a[j]<a[m] then m=j end
j=j+1
end
a[i],a[m]=a[m],a[i] -- swap a[i] and a[m]
i=i+1
end
end
function main()
x=@()
n=-1
n=n+1; x[n]="a"
n=n+1; x[n]="waldemar"
n=n+1; x[n]="luiz"
n=n+1; x[n]="lula"
n=n+1; x[n]="peter"
n=n+1; x[n]="raquel"
n=n+1; x[n]="camilo"
n=n+1; x[n]="andre"
n=n+1; x[n]="marcelo"
n=n+1; x[n]="sedrez"
n=n+1; x[n]="z"
-- quicksort(1,n-1)
print(x[0]..","..x[1]..","..x[2]..","..x[3]..","..x[4]..","..x[5]..","..x[6]..","..x[7]..","..x[8]..","..x[9]..","..x[10])
sort (x, n-1)
print(x[0]..","..x[1]..","..x[2]..","..x[3]..","..x[4]..","..x[5]..","..x[6]..","..x[7]..","..x[8]..","..x[9]..","..x[10])
end

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strlib.c Normal file
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/*
** strlib.c
** String library to LUA
**
** Waldemar Celes Filho
** TeCGraf - PUC-Rio
** 19 May 93
*/
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include "lua.h"
/*
** Return the position of the first caracter of a substring into a string
** LUA interface:
** n = strfind (string, substring)
*/
static void str_find (void)
{
int n;
char *s1, *s2;
lua_Object o1 = lua_getparam (1);
lua_Object o2 = lua_getparam (2);
if (!lua_isstring(o1) || !lua_isstring(o2))
{ lua_error ("incorrect arguments to function `strfind'"); return; }
s1 = lua_getstring(o1);
s2 = lua_getstring(o2);
n = strstr(s1,s2) - s1 + 1;
lua_pushnumber (n);
}
/*
** Return the string length
** LUA interface:
** n = strlen (string)
*/
static void str_len (void)
{
lua_Object o = lua_getparam (1);
if (!lua_isstring(o))
{ lua_error ("incorrect arguments to function `strlen'"); return; }
lua_pushnumber(strlen(lua_getstring(o)));
}
/*
** Return the substring of a string, from start to end
** LUA interface:
** substring = strsub (string, start, end)
*/
static void str_sub (void)
{
int start, end;
char *s;
lua_Object o1 = lua_getparam (1);
lua_Object o2 = lua_getparam (2);
lua_Object o3 = lua_getparam (3);
if (!lua_isstring(o1) || !lua_isnumber(o2) || !lua_isnumber(o3))
{ lua_error ("incorrect arguments to function `strsub'"); return; }
s = strdup (lua_getstring(o1));
start = lua_getnumber (o2);
end = lua_getnumber (o3);
if (end < start || start < 1 || end > strlen(s))
lua_pushstring ("");
else
{
s[end] = 0;
lua_pushstring (&s[start-1]);
}
free (s);
}
/*
** Convert a string to lower case.
** LUA interface:
** lowercase = strlower (string)
*/
static void str_lower (void)
{
char *s, *c;
lua_Object o = lua_getparam (1);
if (!lua_isstring(o))
{ lua_error ("incorrect arguments to function `strlower'"); return; }
c = s = strdup(lua_getstring(o));
while (*c != 0)
{
*c = tolower(*c);
c++;
}
lua_pushstring(s);
free(s);
}
/*
** Convert a string to upper case.
** LUA interface:
** uppercase = strupper (string)
*/
static void str_upper (void)
{
char *s, *c;
lua_Object o = lua_getparam (1);
if (!lua_isstring(o))
{ lua_error ("incorrect arguments to function `strlower'"); return; }
c = s = strdup(lua_getstring(o));
while (*c != 0)
{
*c = toupper(*c);
c++;
}
lua_pushstring(s);
free(s);
}
/*
** Open string library
*/
void strlib_open (void)
{
lua_register ("strfind", str_find);
lua_register ("strlen", str_len);
lua_register ("strsub", str_sub);
lua_register ("strlower", str_lower);
lua_register ("strupper", str_upper);
}

351
table.c Normal file
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/*
** table.c
** Module to control static tables
** TeCGraf - PUC-Rio
** 11 May 93
*/
#include <stdlib.h>
#include <string.h>
#include "opcode.h"
#include "hash.h"
#include "inout.h"
#include "table.h"
#include "lua.h"
#define streq(s1,s2) (strcmp(s1,s2)==0)
#ifndef MAXSYMBOL
#define MAXSYMBOL 512
#endif
static Symbol tablebuffer[MAXSYMBOL] = {
{"type",{T_CFUNCTION,{lua_type}}},
{"tonumber",{T_CFUNCTION,{lua_obj2number}}},
{"next",{T_CFUNCTION,{lua_next}}},
{"nextvar",{T_CFUNCTION,{lua_nextvar}}},
{"print",{T_CFUNCTION,{lua_print}}}
};
Symbol *lua_table=tablebuffer;
Word lua_ntable=5;
#ifndef MAXCONSTANT
#define MAXCONSTANT 256
#endif
static char *constantbuffer[MAXCONSTANT] = {"mark","nil","number",
"string","table",
"function","cfunction"
};
char **lua_constant = constantbuffer;
Word lua_nconstant=T_CFUNCTION+1;
#ifndef MAXSTRING
#define MAXSTRING 512
#endif
static char *stringbuffer[MAXSTRING];
char **lua_string = stringbuffer;
Word lua_nstring=0;
#ifndef MAXARRAY
#define MAXARRAY 512
#endif
static Hash *arraybuffer[MAXARRAY];
Hash **lua_array = arraybuffer;
Word lua_narray=0;
#define MAXFILE 20
char *lua_file[MAXFILE];
int lua_nfile;
/*
** Given a name, search it at symbol table and return its index. If not
** found, allocate at end of table, checking oveflow and return its index.
** On error, return -1.
*/
int lua_findsymbol (char *s)
{
int i;
for (i=0; i<lua_ntable; i++)
if (streq(s,s_name(i)))
return i;
if (lua_ntable >= MAXSYMBOL-1)
{
lua_error ("symbol table overflow");
return -1;
}
s_name(lua_ntable) = strdup(s);
if (s_name(lua_ntable) == NULL)
{
lua_error ("not enough memory");
return -1;
}
s_tag(lua_ntable++) = T_NIL;
return (lua_ntable-1);
}
/*
** Given a constant string, eliminate its delimeters (" or '), search it at
** constant table and return its index. If not found, allocate at end of
** the table, checking oveflow and return its index.
**
** For each allocation, the function allocate a extra char to be used to
** mark used string (it's necessary to deal with constant and string
** uniformily). The function store at the table the second position allocated,
** that represents the beginning of the real string. On error, return -1.
**
*/
int lua_findenclosedconstant (char *s)
{
int i, j, l=strlen(s);
char *c = calloc (l, sizeof(char)); /* make a copy */
c++; /* create mark space */
/* introduce scape characters */
for (i=1,j=0; i<l-1; i++)
{
if (s[i] == '\\')
{
switch (s[++i])
{
case 'n': c[j++] = '\n'; break;
case 't': c[j++] = '\t'; break;
case 'r': c[j++] = '\r'; break;
default : c[j++] = '\\'; c[j++] = c[i]; break;
}
}
else
c[j++] = s[i];
}
c[j++] = 0;
for (i=0; i<lua_nconstant; i++)
if (streq(c,lua_constant[i]))
{
free (c-1);
return i;
}
if (lua_nconstant >= MAXCONSTANT-1)
{
lua_error ("lua: constant string table overflow");
return -1;
}
lua_constant[lua_nconstant++] = c;
return (lua_nconstant-1);
}
/*
** Given a constant string, search it at constant table and return its index.
** If not found, allocate at end of the table, checking oveflow and return
** its index.
**
** For each allocation, the function allocate a extra char to be used to
** mark used string (it's necessary to deal with constant and string
** uniformily). The function store at the table the second position allocated,
** that represents the beginning of the real string. On error, return -1.
**
*/
int lua_findconstant (char *s)
{
int i;
for (i=0; i<lua_nconstant; i++)
if (streq(s,lua_constant[i]))
return i;
if (lua_nconstant >= MAXCONSTANT-1)
{
lua_error ("lua: constant string table overflow");
return -1;
}
{
char *c = calloc(strlen(s)+2,sizeof(char));
c++; /* create mark space */
lua_constant[lua_nconstant++] = strcpy(c,s);
}
return (lua_nconstant-1);
}
/*
** Mark an object if it is a string or a unmarked array.
*/
void lua_markobject (Object *o)
{
if (tag(o) == T_STRING)
lua_markstring (svalue(o)) = 1;
else if (tag(o) == T_ARRAY && markarray(avalue(o)) == 0)
lua_hashmark (avalue(o));
}
/*
** Mark all strings and arrays used by any object stored at symbol table.
*/
static void lua_marktable (void)
{
int i;
for (i=0; i<lua_ntable; i++)
lua_markobject (&s_object(i));
}
/*
** Simulate a garbage colection. When string table or array table overflows,
** this function check if all allocated strings and arrays are in use. If
** there are unused ones, pack (compress) the tables.
*/
static void lua_pack (void)
{
lua_markstack ();
lua_marktable ();
{ /* pack string */
int i, j;
for (i=j=0; i<lua_nstring; i++)
if (lua_markstring(lua_string[i]) == 1)
{
lua_string[j++] = lua_string[i];
lua_markstring(lua_string[i]) = 0;
}
else
{
free (lua_string[i]-1);
}
lua_nstring = j;
}
{ /* pack array */
int i, j;
for (i=j=0; i<lua_narray; i++)
if (markarray(lua_array[i]) == 1)
{
lua_array[j++] = lua_array[i];
markarray(lua_array[i]) = 0;
}
else
{
lua_hashdelete (lua_array[i]);
}
lua_narray = j;
}
}
/*
** Allocate a new string at string table. The given string is already
** allocated with mark space and the function puts it at the end of the
** table, checking overflow, and returns its own pointer, or NULL on error.
*/
char *lua_createstring (char *s)
{
if (s == NULL) return NULL;
if (lua_nstring >= MAXSTRING-1)
{
lua_pack ();
if (lua_nstring >= MAXSTRING-1)
{
lua_error ("string table overflow");
return NULL;
}
}
lua_string[lua_nstring++] = s;
return s;
}
/*
** Allocate a new array, already created, at array table. The function puts
** it at the end of the table, checking overflow, and returns its own pointer,
** or NULL on error.
*/
void *lua_createarray (void *a)
{
if (a == NULL) return NULL;
if (lua_narray >= MAXARRAY-1)
{
lua_pack ();
if (lua_narray >= MAXARRAY-1)
{
lua_error ("indexed table overflow");
return NULL;
}
}
lua_array[lua_narray++] = a;
return a;
}
/*
** Add a file name at file table, checking overflow. This function also set
** the external variable "lua_filename" with the function filename set.
** Return 0 on success or 1 on error.
*/
int lua_addfile (char *fn)
{
if (lua_nfile >= MAXFILE-1)
{
lua_error ("too many files");
return 1;
}
if ((lua_file[lua_nfile++] = strdup (fn)) == NULL)
{
lua_error ("not enough memory");
return 1;
}
return 0;
}
/*
** Return the last file name set.
*/
char *lua_filename (void)
{
return lua_file[lua_nfile-1];
}
/*
** Internal function: return next global variable
*/
void lua_nextvar (void)
{
int index;
Object *o = lua_getparam (1);
if (o == NULL)
{ lua_error ("too few arguments to function `nextvar'"); return; }
if (lua_getparam (2) != NULL)
{ lua_error ("too many arguments to function `nextvar'"); return; }
if (tag(o) == T_NIL)
{
index = 0;
}
else if (tag(o) != T_STRING)
{
lua_error ("incorrect argument to function `nextvar'");
return;
}
else
{
for (index=0; index<lua_ntable; index++)
if (streq(s_name(index),svalue(o))) break;
if (index == lua_ntable)
{
lua_error ("name not found in function `nextvar'");
return;
}
index++;
while (index < lua_ntable-1 && tag(&s_object(index)) == T_NIL) index++;
if (index == lua_ntable-1)
{
lua_pushnil();
lua_pushnil();
return;
}
}
{
Object name;
tag(&name) = T_STRING;
svalue(&name) = lua_createstring(lua_strdup(s_name(index)));
if (lua_pushobject (&name)) return;
if (lua_pushobject (&s_object(index))) return;
}
}

39
table.h Normal file
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/*
** table.c
** Module to control static tables
** TeCGraf - PUC-Rio
** 11 May 93
*/
#ifndef table_h
#define table_h
extern Symbol *lua_table;
extern Word lua_ntable;
extern char **lua_constant;
extern Word lua_nconstant;
extern char **lua_string;
extern Word lua_nstring;
extern Hash **lua_array;
extern Word lua_narray;
extern char *lua_file[];
extern int lua_nfile;
#define lua_markstring(s) (*((s)-1))
int lua_findsymbol (char *s);
int lua_findenclosedconstant (char *s);
int lua_findconstant (char *s);
void lua_markobject (Object *o);
char *lua_createstring (char *s);
void *lua_createarray (void *a);
int lua_addfile (char *fn);
char *lua_filename (void);
void lua_nextvar (void);
#endif

15
test.lua Normal file
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$debug
function somaP (x1,y1,x2,y2)
return x1+x2, y1+y2
end
function norma (x,y)
return x*x+y*y
end
function retorno_multiplo ()
print (norma(somaP(2,3,4,5)))
end

35
type.lua Normal file
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$debug
function check (object, class)
local v = next(object,nil);
while v ~= nil do
if class[v] = nil then print("unknown field: " .. v)
elseif type(object[v]) ~= class[v].type
then print("wrong type for field " .. v)
end
v = next(object,v);
end
v = next(class,nil);
while v ~= nil do
if object[v] = nil then
if class[v].default ~= nil then
object[v] = class[v].default
else print("field "..v.." not initialized")
end
end
v = next(class,v);
end
end
typetrilha = @{x = @{default = 0, type = "number"},
y = @{default = 0, type = "number"},
name = @{type = "string"}
}
function trilha (t) check(t,typetrilha) end
t1 = @trilha{ x = 4, name = "3"}
a = "na".."me"


1639
y_tab.c Normal file

File diff suppressed because it is too large Load Diff

35
y_tab.h Normal file
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typedef union
{
int vInt;
long vLong;
float vFloat;
Word vWord;
Byte *pByte;
} YYSTYPE;
extern YYSTYPE yylval;
# define NIL 257
# define IF 258
# define THEN 259
# define ELSE 260
# define ELSEIF 261
# define WHILE 262
# define DO 263
# define REPEAT 264
# define UNTIL 265
# define END 266
# define RETURN 267
# define LOCAL 268
# define NUMBER 269
# define FUNCTION 270
# define NAME 271
# define STRING 272
# define DEBUG 273
# define NOT 274
# define AND 275
# define OR 276
# define NE 277
# define LE 278
# define GE 279
# define CONC 280
# define UNARY 281