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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
72 changed files with 7015 additions and 10863 deletions

29
Makefile Normal file
View File

@@ -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

4
bugs
View File

@@ -1,4 +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.

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
View File

@@ -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
View File

@@ -0,0 +1,188 @@
/*
** 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
View File

@@ -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
View File

@@ -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);
}

596
lapi.c
View File

@@ -1,596 +0,0 @@
/*
** $Id: lapi.c,v 1.18 1998/01/07 16:26:48 roberto Exp roberto $
** Lua API
** See Copyright Notice in lua.h
*/
#include <stdlib.h>
#include <string.h>
#include "lapi.h"
#include "lauxlib.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 "lua.h"
#include "luadebug.h"
#include "lvm.h"
char lua_ident[] = "$Lua: " LUA_VERSION " " LUA_COPYRIGHT " $\n"
"$Autores: " LUA_AUTHORS " $";
TObject *luaA_Address (lua_Object o)
{
return Address(o);
}
static int normalized_type (TObject *o)
{
int t = ttype(o);
switch (t) {
case LUA_T_PMARK:
return LUA_T_PROTO;
case LUA_T_CMARK:
return LUA_T_CPROTO;
case LUA_T_CLMARK:
return LUA_T_CLOSURE;
default:
return t;
}
}
static void set_normalized (TObject *d, TObject *s)
{
d->value = s->value;
d->ttype = normalized_type(s);
}
static TObject *luaA_protovalue (TObject *o)
{
return (normalized_type(o) == LUA_T_CLOSURE) ? protovalue(o) : o;
}
void luaA_packresults (void)
{
luaV_pack(L->Cstack.lua2C, L->Cstack.num, L->stack.top);
incr_top;
}
int luaA_passresults (void)
{
luaD_checkstack(L->Cstack.num);
memcpy(L->stack.top, L->Cstack.lua2C+L->stack.stack,
L->Cstack.num*sizeof(TObject));
L->stack.top += L->Cstack.num;
return L->Cstack.num;
}
static void checkCparams (int nParams)
{
if (L->stack.top-L->stack.stack < L->Cstack.base+nParams)
lua_error("API error - wrong number of arguments in C2lua stack");
}
static lua_Object put_luaObject (TObject *o)
{
luaD_openstack((L->stack.top-L->stack.stack)-L->Cstack.base);
L->stack.stack[L->Cstack.base++] = *o;
return L->Cstack.base; /* this is +1 real position (see Ref) */
}
static lua_Object put_luaObjectonTop (void)
{
luaD_openstack((L->stack.top-L->stack.stack)-L->Cstack.base);
L->stack.stack[L->Cstack.base++] = *(--L->stack.top);
return L->Cstack.base; /* this is +1 real position (see Ref) */
}
lua_Object lua_pop (void)
{
checkCparams(1);
return put_luaObjectonTop();
}
/*
** Get a parameter, returning the object handle or LUA_NOOBJECT on error.
** 'number' must be 1 to get the first parameter.
*/
lua_Object lua_lua2C (int number)
{
if (number <= 0 || number > L->Cstack.num) return LUA_NOOBJECT;
/* Ref(L->stack.stack+(L->Cstack.lua2C+number-1)) ==
L->stack.stack+(L->Cstack.lua2C+number-1)-L->stack.stack+1 == */
return L->Cstack.lua2C+number;
}
int lua_callfunction (lua_Object function)
{
if (function == LUA_NOOBJECT)
return 1;
else {
luaD_openstack((L->stack.top-L->stack.stack)-L->Cstack.base);
set_normalized(L->stack.stack+L->Cstack.base, Address(function));
return luaD_protectedrun(MULT_RET);
}
}
lua_Object lua_gettagmethod (int tag, char *event)
{
return put_luaObject(luaT_gettagmethod(tag, event));
}
lua_Object lua_settagmethod (int tag, char *event)
{
checkCparams(1);
luaT_settagmethod(tag, event, L->stack.top-1);
return put_luaObjectonTop();
}
lua_Object lua_seterrormethod (void)
{
TObject temp = L->errorim;
checkCparams(1);
L->errorim = *(--L->stack.top);
return put_luaObject(&temp);
}
lua_Object lua_gettable (void)
{
checkCparams(2);
luaV_gettable();
return put_luaObjectonTop();
}
lua_Object lua_rawgettable (void)
{
checkCparams(2);
if (ttype(L->stack.top-2) != LUA_T_ARRAY)
lua_error("indexed expression not a table in rawgettable");
else {
TObject *h = luaH_get(avalue(L->stack.top-2), L->stack.top-1);
--L->stack.top;
if (h != NULL)
*(L->stack.top-1) = *h;
else
ttype(L->stack.top-1) = LUA_T_NIL;
}
return put_luaObjectonTop();
}
void lua_settable (void)
{
checkCparams(3);
luaV_settable(L->stack.top-3, 1);
}
void lua_rawsettable (void)
{
checkCparams(3);
luaV_settable(L->stack.top-3, 0);
}
lua_Object lua_createtable (void)
{
TObject o;
luaC_checkGC();
avalue(&o) = luaH_new(0);
ttype(&o) = LUA_T_ARRAY;
return put_luaObject(&o);
}
lua_Object lua_getglobal (char *name)
{
luaD_checkstack(2); /* may need that to call T.M. */
luaV_getglobal(luaS_new(name));
return put_luaObjectonTop();
}
lua_Object lua_rawgetglobal (char *name)
{
TaggedString *ts = luaS_new(name);
return put_luaObject(&ts->u.globalval);
}
void lua_setglobal (char *name)
{
checkCparams(1);
luaD_checkstack(2); /* may need that to call T.M. */
luaV_setglobal(luaS_new(name));
}
void lua_rawsetglobal (char *name)
{
TaggedString *ts = luaS_new(name);
checkCparams(1);
luaS_rawsetglobal(ts, --L->stack.top);
}
int lua_isnil (lua_Object o)
{
return (o!= LUA_NOOBJECT) && (ttype(Address(o)) == LUA_T_NIL);
}
int lua_istable (lua_Object o)
{
return (o!= LUA_NOOBJECT) && (ttype(Address(o)) == LUA_T_ARRAY);
}
int lua_isuserdata (lua_Object o)
{
return (o!= LUA_NOOBJECT) && (ttype(Address(o)) == LUA_T_USERDATA);
}
int lua_iscfunction (lua_Object o)
{
return (lua_tag(o) == LUA_T_CPROTO);
}
int lua_isnumber (lua_Object o)
{
return (o!= LUA_NOOBJECT) && (tonumber(Address(o)) == 0);
}
int lua_isstring (lua_Object o)
{
int t = lua_tag(o);
return (t == LUA_T_STRING) || (t == LUA_T_NUMBER);
}
int lua_isfunction (lua_Object o)
{
int t = lua_tag(o);
return (t == LUA_T_PROTO) || (t == LUA_T_CPROTO);
}
double lua_getnumber (lua_Object object)
{
if (object == LUA_NOOBJECT) return 0.0;
if (tonumber(Address(object))) return 0.0;
else return (nvalue(Address(object)));
}
char *lua_getstring (lua_Object object)
{
if (object == LUA_NOOBJECT || tostring(Address(object)))
return NULL;
else return (svalue(Address(object)));
}
void *lua_getuserdata (lua_Object object)
{
if (object == LUA_NOOBJECT || ttype(Address(object)) != LUA_T_USERDATA)
return NULL;
else return tsvalue(Address(object))->u.d.v;
}
lua_CFunction lua_getcfunction (lua_Object object)
{
if (!lua_iscfunction(object))
return NULL;
else return fvalue(luaA_protovalue(Address(object)));
}
void lua_pushnil (void)
{
ttype(L->stack.top) = LUA_T_NIL;
incr_top;
}
void lua_pushnumber (double n)
{
ttype(L->stack.top) = LUA_T_NUMBER;
nvalue(L->stack.top) = n;
incr_top;
}
void lua_pushstring (char *s)
{
if (s == NULL)
ttype(L->stack.top) = LUA_T_NIL;
else {
tsvalue(L->stack.top) = luaS_new(s);
ttype(L->stack.top) = LUA_T_STRING;
}
incr_top;
luaC_checkGC();
}
void lua_pushCclosure (lua_CFunction fn, int n)
{
if (fn == NULL)
lua_error("API error - attempt to push a NULL Cfunction");
checkCparams(n);
ttype(L->stack.top) = LUA_T_CPROTO;
fvalue(L->stack.top) = fn;
incr_top;
luaV_closure(n);
}
void lua_pushusertag (void *u, int tag)
{
if (tag < 0 && tag != LUA_ANYTAG)
luaT_realtag(tag); /* error if tag is not valid */
tsvalue(L->stack.top) = luaS_createudata(u, tag);
ttype(L->stack.top) = LUA_T_USERDATA;
incr_top;
luaC_checkGC();
}
void luaA_pushobject (TObject *o)
{
*L->stack.top = *o;
incr_top;
}
void lua_pushobject (lua_Object o)
{
if (o == LUA_NOOBJECT)
lua_error("API error - attempt to push a NOOBJECT");
else {
set_normalized(L->stack.top, Address(o));
incr_top;
}
}
int lua_tag (lua_Object lo)
{
if (lo == LUA_NOOBJECT)
return LUA_T_NIL;
else {
TObject *o = Address(lo);
int t;
switch (t = ttype(o)) {
case LUA_T_USERDATA:
return o->value.ts->u.d.tag;
case LUA_T_ARRAY:
return o->value.a->htag;
case LUA_T_PMARK:
return LUA_T_PROTO;
case LUA_T_CMARK:
return LUA_T_CPROTO;
case LUA_T_CLOSURE: case LUA_T_CLMARK:
return o->value.cl->consts[0].ttype;
#ifdef DEBUG
case LUA_T_LINE:
lua_error("internal error");
#endif
default:
return t;
}
}
}
void lua_settag (int tag)
{
checkCparams(1);
luaT_realtag(tag);
switch (ttype(L->stack.top-1)) {
case LUA_T_ARRAY:
(L->stack.top-1)->value.a->htag = tag;
break;
case LUA_T_USERDATA:
(L->stack.top-1)->value.ts->u.d.tag = tag;
break;
default:
luaL_verror("cannot change the tag of a %.20s",
luaO_typenames[-ttype((L->stack.top-1))]);
}
L->stack.top--;
}
/*
** =======================================================
** Debug interface
** =======================================================
*/
/* Hooks */
lua_CHFunction lua_callhook = NULL;
lua_LHFunction lua_linehook = NULL;
lua_Function lua_stackedfunction (int level)
{
StkId i;
for (i = (L->stack.top-1)-L->stack.stack; i>=0; i--) {
int t = L->stack.stack[i].ttype;
if (t == LUA_T_CLMARK || t == LUA_T_PMARK || t == LUA_T_CMARK)
if (level-- == 0)
return Ref(L->stack.stack+i);
}
return LUA_NOOBJECT;
}
int lua_currentline (lua_Function func)
{
TObject *f = Address(func);
return (f+1 < L->stack.top && (f+1)->ttype == LUA_T_LINE) ?
(f+1)->value.i : -1;
}
lua_Object lua_getlocal (lua_Function func, int local_number, char **name)
{
/* check whether func is a Lua function */
if (lua_tag(func) != LUA_T_PROTO)
return LUA_NOOBJECT;
else {
TObject *f = Address(func);
TProtoFunc *fp = luaA_protovalue(f)->value.tf;
*name = luaF_getlocalname(fp, local_number, lua_currentline(func));
if (*name) {
/* if "*name", there must be a LUA_T_LINE */
/* therefore, f+2 points to function base */
return Ref((f+2)+(local_number-1));
}
else
return LUA_NOOBJECT;
}
}
int lua_setlocal (lua_Function func, int local_number)
{
/* check whether func is a Lua function */
if (lua_tag(func) != LUA_T_PROTO)
return 0;
else {
TObject *f = Address(func);
TProtoFunc *fp = luaA_protovalue(f)->value.tf;
char *name = luaF_getlocalname(fp, local_number, lua_currentline(func));
checkCparams(1);
--L->stack.top;
if (name) {
/* if "name", there must be a LUA_T_LINE */
/* therefore, f+2 points to function base */
*((f+2)+(local_number-1)) = *L->stack.top;
return 1;
}
else
return 0;
}
}
void lua_funcinfo (lua_Object func, char **filename, int *linedefined)
{
if (!lua_isfunction(func))
lua_error("API - `funcinfo' called with a non-function value");
else {
TObject *f = luaA_protovalue(Address(func));
if (normalized_type(f) == LUA_T_PROTO) {
*filename = tfvalue(f)->fileName->str;
*linedefined = tfvalue(f)->lineDefined;
}
else {
*filename = "(C)";
*linedefined = -1;
}
}
}
static int checkfunc (TObject *o)
{
return luaO_equalObj(o, L->stack.top);
}
char *lua_getobjname (lua_Object o, char **name)
{ /* try to find a name for given function */
set_normalized(L->stack.top, Address(o)); /* to be accessed by "checkfunc */
if ((*name = luaT_travtagmethods(checkfunc)) != NULL)
return "tag-method";
else if ((*name = luaS_travsymbol(checkfunc)) != NULL)
return "global";
else return "";
}
/*
** =======================================================
** BLOCK mechanism
** =======================================================
*/
void lua_beginblock (void)
{
if (L->numCblocks >= MAX_C_BLOCKS)
lua_error("too many nested blocks");
L->Cblocks[L->numCblocks] = L->Cstack;
L->numCblocks++;
}
void lua_endblock (void)
{
--L->numCblocks;
L->Cstack = L->Cblocks[L->numCblocks];
luaD_adjusttop(L->Cstack.base);
}
int lua_ref (int lock)
{
int ref;
checkCparams(1);
ref = luaC_ref(L->stack.top-1, lock);
L->stack.top--;
return ref;
}
lua_Object lua_getref (int ref)
{
TObject *o = luaC_getref(ref);
return (o ? put_luaObject(o) : LUA_NOOBJECT);
}
#ifdef LUA_COMPAT2_5
/*
** API: set a function as a fallback
*/
static void do_unprotectedrun (lua_CFunction f, int nParams, int nResults)
{
StkId base = (L->stack.top-L->stack.stack)-nParams;
luaD_openstack(nParams);
L->stack.stack[base].ttype = LUA_T_CPROTO;
L->stack.stack[base].value.f = f;
luaD_call(base+1, nResults);
}
lua_Object lua_setfallback (char *name, lua_CFunction fallback)
{
lua_pushstring(name);
lua_pushcfunction(fallback);
do_unprotectedrun(luaT_setfallback, 2, 1);
return put_luaObjectonTop();
}
#endif

20
lapi.h
View File

@@ -1,20 +0,0 @@
/*
** $Id: $
** auxiliar functions from Lua API
** See Copyright Notice in lua.h
*/
#ifndef lapi_h
#define lapi_h
#include "lua.h"
#include "lobject.h"
TObject *luaA_Address (lua_Object o);
void luaA_pushobject (TObject *o);
void luaA_packresults (void);
int luaA_passresults (void);
#endif

101
lauxlib.c
View File

@@ -1,101 +0,0 @@
/*
** $Id: lauxlib.c,v 1.8 1998/01/09 15:06:07 roberto Exp $
** Auxiliar functions for building Lua libraries
** See Copyright Notice in lua.h
*/
#include <stdarg.h>
#include <stdio.h>
/* Please Notice: This file uses only the oficial API of Lua
** Any function declared here could be written as an application
** function. With care, these functions can be used by other libraries.
*/
#include "lauxlib.h"
#include "lua.h"
#include "luadebug.h"
void luaL_argerror (int numarg, char *extramsg)
{
char *funcname;
lua_getobjname(lua_stackedfunction(0), &funcname);
if (funcname == NULL)
funcname = "???";
if (extramsg == NULL)
luaL_verror("bad argument #%d to function `%.50s'", numarg, funcname);
else
luaL_verror("bad argument #%d to function `%.50s' (%.100s)",
numarg, funcname, extramsg);
}
char *luaL_check_string (int numArg)
{
lua_Object o = lua_getparam(numArg);
luaL_arg_check(lua_isstring(o), numArg, "string expected");
return lua_getstring(o);
}
char *luaL_opt_string (int numArg, char *def)
{
return (lua_getparam(numArg) == LUA_NOOBJECT) ? def :
luaL_check_string(numArg);
}
double luaL_check_number (int numArg)
{
lua_Object o = lua_getparam(numArg);
luaL_arg_check(lua_isnumber(o), numArg, "number expected");
return lua_getnumber(o);
}
double luaL_opt_number (int numArg, double def)
{
return (lua_getparam(numArg) == LUA_NOOBJECT) ? def :
luaL_check_number(numArg);
}
lua_Object luaL_tablearg (int arg)
{
lua_Object o = lua_getparam(arg);
luaL_arg_check(lua_istable(o), arg, "table expected");
return o;
}
lua_Object luaL_functionarg (int arg)
{
lua_Object o = lua_getparam(arg);
luaL_arg_check(lua_isfunction(o), arg, "function expected");
return o;
}
lua_Object luaL_nonnullarg (int numArg)
{
lua_Object o = lua_getparam(numArg);
luaL_arg_check(o != LUA_NOOBJECT, numArg, "value expected");
return o;
}
void luaL_openlib (struct luaL_reg *l, int n)
{
int i;
lua_open(); /* make sure lua is already open */
for (i=0; i<n; i++)
lua_register(l[i].name, l[i].func);
}
void luaL_verror (char *fmt, ...)
{
char buff[500];
va_list argp;
va_start(argp, fmt);
vsprintf(buff, fmt, argp);
va_end(argp);
lua_error(buff);
}

View File

@@ -1,43 +0,0 @@
/*
** $Id: lauxlib.h,v 1.5 1997/12/17 20:48:58 roberto Exp roberto $
** Auxiliar functions for building Lua libraries
** See Copyright Notice in lua.h
*/
#ifndef auxlib_h
#define auxlib_h
#include "lua.h"
struct luaL_reg {
char *name;
lua_CFunction func;
};
#define luaL_arg_check(cond,numarg,extramsg) if (!(cond)) \
luaL_argerror(numarg,extramsg)
void luaL_openlib (struct luaL_reg *l, int n);
void luaL_argerror (int numarg, char *extramsg);
char *luaL_check_string (int numArg);
char *luaL_opt_string (int numArg, char *def);
double luaL_check_number (int numArg);
double luaL_opt_number (int numArg, double def);
lua_Object luaL_functionarg (int arg);
lua_Object luaL_tablearg (int arg);
lua_Object luaL_nonnullarg (int numArg);
void luaL_verror (char *fmt, ...);
char *luaL_openspace (int size);
void luaL_resetbuffer (void);
void luaL_addchar (int c);
void luaL_addsize (int n);
int luaL_newbuffer (int size);
void luaL_oldbuffer (int old);
char *luaL_buffer (void);
#endif

View File

@@ -1,81 +0,0 @@
/*
** $Id: $
** Auxiliar functions for building Lua libraries
** See Copyright Notice in lua.h
*/
#include <stdio.h>
#include "lauxlib.h"
#include "lmem.h"
#include "lstate.h"
/*-------------------------------------------------------
** Auxiliar buffer
-------------------------------------------------------*/
#define BUFF_STEP 32
#define openspace(size) if (L->Mbuffnext+(size) > L->Mbuffsize) Openspace(size)
static void Openspace (int size)
{
LState *l = L; /* to optimize */
int base = l->Mbuffbase-l->Mbuffer;
l->Mbuffsize *= 2;
if (l->Mbuffnext+size > l->Mbuffsize) /* still not big enough? */
l->Mbuffsize = l->Mbuffnext+size;
l->Mbuffer = luaM_realloc(l->Mbuffer, l->Mbuffsize);
l->Mbuffbase = l->Mbuffer+base;
}
char *luaL_openspace (int size)
{
openspace(size);
return L->Mbuffer+L->Mbuffnext;
}
void luaL_addchar (int c)
{
openspace(BUFF_STEP);
L->Mbuffer[L->Mbuffnext++] = c;
}
void luaL_resetbuffer (void)
{
L->Mbuffnext = L->Mbuffbase-L->Mbuffer;
}
void luaL_addsize (int n)
{
L->Mbuffnext += n;
}
int luaL_newbuffer (int size)
{
int old = L->Mbuffbase-L->Mbuffer;
openspace(size);
L->Mbuffbase = L->Mbuffer+L->Mbuffnext;
return old;
}
void luaL_oldbuffer (int old)
{
L->Mbuffnext = L->Mbuffbase-L->Mbuffer;
L->Mbuffbase = L->Mbuffer+old;
}
char *luaL_buffer (void)
{
return L->Mbuffbase;
}

View File

@@ -1,516 +0,0 @@
/*
** $Id: lbuiltin.c,v 1.21 1998/01/02 17:46:32 roberto Exp roberto $
** Built-in functions
** See Copyright Notice in lua.h
*/
#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "lapi.h"
#include "lauxlib.h"
#include "lbuiltin.h"
#include "ldo.h"
#include "lfunc.h"
#include "lmem.h"
#include "lobject.h"
#include "lstate.h"
#include "lstring.h"
#include "ltable.h"
#include "ltm.h"
#include "lua.h"
static void pushstring (TaggedString *s)
{
TObject o;
o.ttype = LUA_T_STRING;
o.value.ts = s;
luaA_pushobject(&o);
}
static void nextvar (void)
{
TObject *o = luaA_Address(luaL_nonnullarg(1));
TaggedString *g;
if (ttype(o) == LUA_T_NIL)
g = (TaggedString *)L->rootglobal.next;
else {
luaL_arg_check(ttype(o) == LUA_T_STRING, 1, "variable name expected");
g = tsvalue(o);
/* check whether name is in global var list */
luaL_arg_check((GCnode *)g != g->head.next, 1, "variable name expected");
g = (TaggedString *)g->head.next;
}
while (g && g->u.globalval.ttype == LUA_T_NIL) /* skip globals with nil */
g = (TaggedString *)g->head.next;
if (g) {
pushstring(g);
luaA_pushobject(&g->u.globalval);
}
}
static void foreachvar (void)
{
TObject f = *luaA_Address(luaL_functionarg(1));
GCnode *g;
StkId name = L->Cstack.base++; /* place to keep var name (to avoid GC) */
ttype(L->stack.stack+name) = LUA_T_NIL;
L->stack.top++;
for (g = L->rootglobal.next; g; g = g->next) {
TaggedString *s = (TaggedString *)g;
if (s->u.globalval.ttype != LUA_T_NIL) {
ttype(L->stack.stack+name) = LUA_T_STRING;
tsvalue(L->stack.stack+name) = s; /* keep s on stack to avoid GC */
luaA_pushobject(&f);
pushstring(s);
luaA_pushobject(&s->u.globalval);
luaD_call((L->stack.top-L->stack.stack)-2, 1);
if (ttype(L->stack.top-1) != LUA_T_NIL)
return;
L->stack.top--;
}
}
}
static void next (void)
{
lua_Object o = luaL_tablearg(1);
lua_Object r = luaL_nonnullarg(2);
Node *n = luaH_next(luaA_Address(o), luaA_Address(r));
if (n) {
luaA_pushobject(&n->ref);
luaA_pushobject(&n->val);
}
}
static void foreach (void)
{
TObject t = *luaA_Address(luaL_tablearg(1));
TObject f = *luaA_Address(luaL_functionarg(2));
int i;
for (i=0; i<avalue(&t)->nhash; i++) {
Node *nd = &(avalue(&t)->node[i]);
if (ttype(ref(nd)) != LUA_T_NIL && ttype(val(nd)) != LUA_T_NIL) {
luaA_pushobject(&f);
luaA_pushobject(ref(nd));
luaA_pushobject(val(nd));
luaD_call((L->stack.top-L->stack.stack)-2, 1);
if (ttype(L->stack.top-1) != LUA_T_NIL)
return;
L->stack.top--;
}
}
}
static void internaldostring (void)
{
if (lua_getparam(2) != LUA_NOOBJECT)
lua_error("invalid 2nd argument (probably obsolete code)");
if (lua_dostring(luaL_check_string(1)) == 0)
if (luaA_passresults() == 0)
lua_pushuserdata(NULL); /* at least one result to signal no errors */
}
static void internaldofile (void)
{
char *fname = luaL_opt_string(1, NULL);
if (lua_dofile(fname) == 0)
if (luaA_passresults() == 0)
lua_pushuserdata(NULL); /* at least one result to signal no errors */
}
static char *to_string (lua_Object obj)
{
char *buff = luaL_openspace(30);
TObject *o = luaA_Address(obj);
switch (ttype(o)) {
case LUA_T_NUMBER: case LUA_T_STRING:
return lua_getstring(obj);
case LUA_T_ARRAY: {
sprintf(buff, "table: %p", (void *)o->value.a);
return buff;
}
case LUA_T_CLOSURE: {
sprintf(buff, "function: %p", (void *)o->value.cl);
return buff;
}
case LUA_T_PROTO: {
sprintf(buff, "function: %p", (void *)o->value.tf);
return buff;
}
case LUA_T_CPROTO: {
sprintf(buff, "function: %p", (void *)o->value.f);
return buff;
}
case LUA_T_USERDATA: {
sprintf(buff, "userdata: %p", o->value.ts->u.d.v);
return buff;
}
case LUA_T_NIL:
return "nil";
default:
lua_error("internal error");
return NULL; /* to avoid warnings */
}
}
static void bi_tostring (void)
{
lua_pushstring(to_string(lua_getparam(1)));
}
static void luaI_print (void)
{
int i = 1;
lua_Object obj;
while ((obj = lua_getparam(i++)) != LUA_NOOBJECT)
printf("%s\t", to_string(obj));
printf("\n");
}
static void luaI_type (void)
{
lua_Object o = luaL_nonnullarg(1);
lua_pushstring(luaO_typenames[-ttype(luaA_Address(o))]);
lua_pushnumber(lua_tag(o));
}
static void tonumber (void)
{
int base = luaL_opt_number(2, 10);
if (base == 10) { /* standard convertion */
lua_Object o = lua_getparam(1);
if (lua_isnumber(o))
lua_pushnumber(lua_getnumber(o));
}
else {
char *s = luaL_check_string(1);
unsigned long n;
luaL_arg_check(0 <= base && base <= 36, 2, "base out of range");
n = strtol(s, &s, base);
while (isspace(*s)) s++; /* skip trailing spaces */
if (*s) return; /* invalid format: return nil */
lua_pushnumber(n);
}
}
static void luaI_error (void)
{
lua_error(lua_getstring(lua_getparam(1)));
}
static void luaI_assert (void)
{
lua_Object p = lua_getparam(1);
if (p == LUA_NOOBJECT || lua_isnil(p))
luaL_verror("assertion failed! %.100s", luaL_opt_string(2, ""));
}
static void setglobal (void)
{
char *n = luaL_check_string(1);
lua_Object value = luaL_nonnullarg(2);
lua_pushobject(value);
lua_setglobal(n);
lua_pushobject(value); /* return given value */
}
static void rawsetglobal (void)
{
char *n = luaL_check_string(1);
lua_Object value = luaL_nonnullarg(2);
lua_pushobject(value);
lua_rawsetglobal(n);
lua_pushobject(value); /* return given value */
}
static void getglobal (void)
{
lua_pushobject(lua_getglobal(luaL_check_string(1)));
}
static void rawgetglobal (void)
{
lua_pushobject(lua_rawgetglobal(luaL_check_string(1)));
}
static void luatag (void)
{
lua_pushnumber(lua_tag(lua_getparam(1)));
}
static int getnarg (lua_Object table)
{
lua_Object temp;
/* temp = table.n */
lua_pushobject(table); lua_pushstring("n"); temp = lua_rawgettable();
return (lua_isnumber(temp) ? lua_getnumber(temp) : MAX_WORD);
}
static void luaI_call (void)
{
lua_Object f = luaL_nonnullarg(1);
lua_Object arg = luaL_tablearg(2);
char *options = luaL_opt_string(3, "");
lua_Object err = lua_getparam(4);
int narg = getnarg(arg);
int i, status;
if (err != LUA_NOOBJECT) { /* set new error method */
lua_pushobject(err);
err = lua_seterrormethod();
}
/* push arg[1...n] */
for (i=0; i<narg; i++) {
lua_Object temp;
/* temp = arg[i+1] */
lua_pushobject(arg); lua_pushnumber(i+1); temp = lua_rawgettable();
if (narg == MAX_WORD && lua_isnil(temp))
break;
lua_pushobject(temp);
}
status = lua_callfunction(f);
if (err != LUA_NOOBJECT) { /* restore old error method */
lua_pushobject(err);
lua_seterrormethod();
}
if (status != 0) { /* error in call? */
if (strchr(options, 'x'))
return; /* return nil to signal the error */
else
lua_error(NULL);
}
else { /* no errors */
if (strchr(options, 'p'))
luaA_packresults();
else
luaA_passresults();
}
}
static void settag (void)
{
lua_Object o = luaL_tablearg(1);
lua_pushobject(o);
lua_settag(luaL_check_number(2));
}
static void newtag (void)
{
lua_pushnumber(lua_newtag());
}
static void copytagmethods (void)
{
lua_pushnumber(lua_copytagmethods(luaL_check_number(1),
luaL_check_number(2)));
}
static void rawgettable (void)
{
lua_Object t = luaL_nonnullarg(1);
lua_Object i = luaL_nonnullarg(2);
lua_pushobject(t);
lua_pushobject(i);
lua_pushobject(lua_rawgettable());
}
static void rawsettable (void)
{
lua_Object t = luaL_nonnullarg(1);
lua_Object i = luaL_nonnullarg(2);
lua_Object v = luaL_nonnullarg(3);
lua_pushobject(t);
lua_pushobject(i);
lua_pushobject(v);
lua_rawsettable();
}
static void settagmethod (void)
{
lua_Object nf = luaL_nonnullarg(3);
lua_pushobject(nf);
lua_pushobject(lua_settagmethod((int)luaL_check_number(1),
luaL_check_string(2)));
}
static void gettagmethod (void)
{
lua_pushobject(lua_gettagmethod((int)luaL_check_number(1),
luaL_check_string(2)));
}
static void seterrormethod (void)
{
lua_Object nf = luaL_functionarg(1);
lua_pushobject(nf);
lua_pushobject(lua_seterrormethod());
}
static void luaI_collectgarbage (void)
{
lua_pushnumber(lua_collectgarbage(luaL_opt_number(1, 0)));
}
/*
** =======================================================
** some DEBUG functions
** =======================================================
*/
#ifdef DEBUG
static void mem_query (void)
{
lua_pushnumber(totalmem);
lua_pushnumber(numblocks);
}
static void countlist (void)
{
char *s = luaL_check_string(1);
GCnode *l = (s[0]=='t') ? L->roottable.next : (s[0]=='c') ? L->rootcl.next :
(s[0]=='p') ? L->rootproto.next : L->rootglobal.next;
int i=0;
while (l) {
i++;
l = l->next;
}
lua_pushnumber(i);
}
static void testC (void)
{
#define getnum(s) ((*s++) - '0')
#define getname(s) (nome[0] = *s++, nome)
static int locks[10];
lua_Object reg[10];
char nome[2];
char *s = luaL_check_string(1);
nome[1] = 0;
while (1) {
switch (*s++) {
case '0': case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9':
lua_pushnumber(*(s-1) - '0');
break;
case 'c': reg[getnum(s)] = lua_createtable(); break;
case 'C': { lua_CFunction f = lua_getcfunction(lua_getglobal(getname(s)));
lua_pushCclosure(f, getnum(s));
break;
}
case 'P': reg[getnum(s)] = lua_pop(); break;
case 'g': { int n=getnum(s); reg[n]=lua_getglobal(getname(s)); break; }
case 'G': { int n = getnum(s);
reg[n] = lua_rawgetglobal(getname(s));
break;
}
case 'l': locks[getnum(s)] = lua_ref(1); break;
case 'L': locks[getnum(s)] = lua_ref(0); break;
case 'r': { int n=getnum(s); reg[n]=lua_getref(locks[getnum(s)]); break; }
case 'u': lua_unref(locks[getnum(s)]); break;
case 'p': { int n = getnum(s); reg[n] = lua_getparam(getnum(s)); break; }
case '=': lua_setglobal(getname(s)); break;
case 's': lua_pushstring(getname(s)); break;
case 'o': lua_pushobject(reg[getnum(s)]); break;
case 'f': lua_call(getname(s)); break;
case 'i': reg[getnum(s)] = lua_gettable(); break;
case 'I': reg[getnum(s)] = lua_rawgettable(); break;
case 't': lua_settable(); break;
case 'T': lua_rawsettable(); break;
default: luaL_verror("unknown command in `testC': %c", *(s-1));
}
if (*s == 0) return;
if (*s++ != ' ') lua_error("missing ` ' between commands in `testC'");
}
}
#endif
/*
** Internal functions
*/
static struct luaL_reg int_funcs[] = {
#ifdef LUA_COMPAT2_5
{"setfallback", luaT_setfallback},
#endif
#ifdef DEBUG
{"testC", testC},
{"totalmem", mem_query},
{"count", countlist},
#endif
{"assert", luaI_assert},
{"call", luaI_call},
{"collectgarbage", luaI_collectgarbage},
{"dofile", internaldofile},
{"copytagmethods", copytagmethods},
{"dostring", internaldostring},
{"error", luaI_error},
{"foreach", foreach},
{"foreachvar", foreachvar},
{"getglobal", getglobal},
{"newtag", newtag},
{"next", next},
{"nextvar", nextvar},
{"print", luaI_print},
{"rawgetglobal", rawgetglobal},
{"rawgettable", rawgettable},
{"rawsetglobal", rawsetglobal},
{"rawsettable", rawsettable},
{"seterrormethod", seterrormethod},
{"setglobal", setglobal},
{"settagmethod", settagmethod},
{"gettagmethod", gettagmethod},
{"settag", settag},
{"tonumber", tonumber},
{"tostring", bi_tostring},
{"tag", luatag},
{"type", luaI_type}
};
#define INTFUNCSIZE (sizeof(int_funcs)/sizeof(int_funcs[0]))
void luaB_predefine (void)
{
/* pre-register mem error messages, to avoid loop when error arises */
luaS_newfixedstring(tableEM);
luaS_newfixedstring(memEM);
luaL_openlib(int_funcs, (sizeof(int_funcs)/sizeof(int_funcs[0])));
lua_pushstring(LUA_VERSION);
lua_setglobal("_VERSION");
}

View File

@@ -1,14 +0,0 @@
/*
** $Id: $
** Built-in functions
** See Copyright Notice in lua.h
*/
#ifndef lbuiltin_h
#define lbuiltin_h
void luaB_predefine (void);
#endif

420
ldo.c
View File

@@ -1,420 +0,0 @@
/*
** $Id: ldo.c,v 1.20 1997/12/26 18:38:16 roberto Exp roberto $
** Stack and Call structure of Lua
** See Copyright Notice in lua.h
*/
#include <setjmp.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "ldo.h"
#include "lfunc.h"
#include "lgc.h"
#include "lmem.h"
#include "lobject.h"
#include "lparser.h"
#include "lstate.h"
#include "ltm.h"
#include "lua.h"
#include "luadebug.h"
#include "lundump.h"
#include "lvm.h"
#include "lzio.h"
#ifndef STACK_LIMIT
#define STACK_LIMIT 6000
#endif
/*
** Error messages
*/
static void stderrorim (void)
{
fprintf(stderr, "lua error: %s\n", lua_getstring(lua_getparam(1)));
}
#define STACK_UNIT 128
void luaD_init (void)
{
L->stack.stack = luaM_newvector(STACK_UNIT, TObject);
L->stack.top = L->stack.stack;
L->stack.last = L->stack.stack+(STACK_UNIT-1);
ttype(&L->errorim) = LUA_T_CPROTO;
fvalue(&L->errorim) = stderrorim;
}
void luaD_checkstack (int n)
{
struct Stack *S = &L->stack;
if (S->last-S->top <= n) {
StkId top = S->top-S->stack;
int stacksize = (S->last-S->stack)+1+STACK_UNIT+n;
S->stack = luaM_reallocvector(S->stack, stacksize, TObject);
S->last = S->stack+(stacksize-1);
S->top = S->stack + top;
if (stacksize >= STACK_LIMIT) { /* stack overflow? */
if (lua_stackedfunction(100) == LUA_NOOBJECT) /* 100 funcs on stack? */
lua_error("Lua2C - C2Lua overflow"); /* doesn't look like a rec. loop */
else
lua_error("stack size overflow");
}
}
}
/*
** Adjust stack. Set top to the given value, pushing NILs if needed.
*/
void luaD_adjusttop (StkId newtop)
{
int diff = newtop-(L->stack.top-L->stack.stack);
if (diff <= 0)
L->stack.top += diff;
else {
luaD_checkstack(diff);
while (diff--)
ttype(L->stack.top++) = LUA_T_NIL;
}
}
/*
** Open a hole below "nelems" from the L->stack.top.
*/
void luaD_openstack (int nelems)
{
luaO_memup(L->stack.top-nelems+1, L->stack.top-nelems,
nelems*sizeof(TObject));
incr_top;
}
void luaD_lineHook (int line)
{
struct C_Lua_Stack oldCLS = L->Cstack;
StkId old_top = L->Cstack.lua2C = L->Cstack.base = L->stack.top-L->stack.stack;
L->Cstack.num = 0;
(*lua_linehook)(line);
L->stack.top = L->stack.stack+old_top;
L->Cstack = oldCLS;
}
void luaD_callHook (StkId base, TProtoFunc *tf, int isreturn)
{
struct C_Lua_Stack oldCLS = L->Cstack;
StkId old_top = L->Cstack.lua2C = L->Cstack.base = L->stack.top-L->stack.stack;
L->Cstack.num = 0;
if (isreturn)
(*lua_callhook)(LUA_NOOBJECT, "(return)", 0);
else {
TObject *f = L->stack.stack+base-1;
if (tf)
(*lua_callhook)(Ref(f), tf->fileName->str, tf->lineDefined);
else
(*lua_callhook)(Ref(f), "(C)", -1);
}
L->stack.top = L->stack.stack+old_top;
L->Cstack = oldCLS;
}
/*
** Call a C function.
** Cstack.num is the number of arguments; Cstack.lua2C points to the
** first argument. Returns an index to the first result from C.
*/
static StkId callC (lua_CFunction f, StkId base)
{
struct C_Lua_Stack *CS = &L->Cstack;
struct C_Lua_Stack oldCLS = *CS;
StkId firstResult;
int numarg = (L->stack.top-L->stack.stack) - base;
CS->num = numarg;
CS->lua2C = base;
CS->base = base+numarg; /* == top-stack */
if (lua_callhook)
luaD_callHook(base, NULL, 0);
(*f)(); /* do the actual call */
if (lua_callhook) /* func may have changed lua_callhook */
luaD_callHook(base, NULL, 1);
firstResult = CS->base;
*CS = oldCLS;
return firstResult;
}
static StkId callCclosure (struct Closure *cl, lua_CFunction f, StkId base)
{
TObject *pbase;
int nup = cl->nelems; /* number of upvalues */
luaD_checkstack(nup);
pbase = L->stack.stack+base; /* care: previous call may change this */
/* open space for upvalues as extra arguments */
luaO_memup(pbase+nup, pbase, (L->stack.top-pbase)*sizeof(TObject));
/* copy upvalues into stack */
memcpy(pbase, cl->consts+1, nup*sizeof(TObject));
L->stack.top += nup;
return callC(f, base);
}
void luaD_callTM (TObject *f, int nParams, int nResults)
{
luaD_openstack(nParams);
*(L->stack.top-nParams-1) = *f;
luaD_call((L->stack.top-L->stack.stack)-nParams, nResults);
}
/*
** Call a function (C or Lua). The parameters must be on the L->stack.stack,
** between [L->stack.stack+base,L->stack.top). The function to be called is at L->stack.stack+base-1.
** When returns, the results are on the L->stack.stack, between [L->stack.stack+base-1,L->stack.top).
** The number of results is nResults, unless nResults=MULT_RET.
*/
void luaD_call (StkId base, int nResults)
{
StkId firstResult;
TObject *func = L->stack.stack+base-1;
int i;
switch (ttype(func)) {
case LUA_T_CPROTO:
ttype(func) = LUA_T_CMARK;
firstResult = callC(fvalue(func), base);
break;
case LUA_T_PROTO:
ttype(func) = LUA_T_PMARK;
firstResult = luaV_execute(NULL, tfvalue(func), base);
break;
case LUA_T_CLOSURE: {
Closure *c = clvalue(func);
TObject *proto = &(c->consts[0]);
ttype(func) = LUA_T_CLMARK;
firstResult = (ttype(proto) == LUA_T_CPROTO) ?
callCclosure(c, fvalue(proto), base) :
luaV_execute(c, tfvalue(proto), base);
break;
}
default: { /* func is not a function */
/* Check the tag method for invalid functions */
TObject *im = luaT_getimbyObj(func, IM_FUNCTION);
if (ttype(im) == LUA_T_NIL)
lua_error("call expression not a function");
luaD_callTM(im, (L->stack.top-L->stack.stack)-(base-1), nResults);
return;
}
}
/* adjust the number of results */
if (nResults != MULT_RET)
luaD_adjusttop(firstResult+nResults);
/* move results to base-1 (to erase parameters and function) */
base--;
nResults = L->stack.top - (L->stack.stack+firstResult); /* actual number of results */
for (i=0; i<nResults; i++)
*(L->stack.stack+base+i) = *(L->stack.stack+firstResult+i);
L->stack.top -= firstResult-base;
}
/*
** Traverse all objects on L->stack.stack
*/
void luaD_travstack (int (*fn)(TObject *))
{
StkId i;
for (i = (L->stack.top-1)-L->stack.stack; i>=0; i--)
fn(L->stack.stack+i);
}
static void message (char *s)
{
TObject im = L->errorim;
if (ttype(&im) != LUA_T_NIL) {
lua_pushstring(s);
luaD_callTM(&im, 1, 0);
}
}
/*
** Reports an error, and jumps up to the available recover label
*/
void lua_error (char *s)
{
if (s) message(s);
if (L->errorJmp)
longjmp(*((jmp_buf *)L->errorJmp), 1);
else {
fprintf (stderr, "lua: exit(1). Unable to recover\n");
exit(1);
}
}
/*
** Call the function at L->Cstack.base, and incorporate results on
** the Lua2C structure.
*/
static void do_callinc (int nResults)
{
StkId base = L->Cstack.base;
luaD_call(base+1, nResults);
L->Cstack.lua2C = base; /* position of the luaM_new results */
L->Cstack.num = (L->stack.top-L->stack.stack) - base; /* number of results */
L->Cstack.base = base + L->Cstack.num; /* incorporate results on L->stack.stack */
}
/*
** Execute a protected call. Assumes that function is at L->Cstack.base and
** parameters are on top of it. Leave nResults on the stack.
*/
int luaD_protectedrun (int nResults)
{
jmp_buf myErrorJmp;
int status;
struct C_Lua_Stack oldCLS = L->Cstack;
jmp_buf *oldErr = L->errorJmp;
L->errorJmp = &myErrorJmp;
if (setjmp(myErrorJmp) == 0) {
do_callinc(nResults);
status = 0;
}
else { /* an error occurred: restore L->Cstack and L->stack.top */
L->Cstack = oldCLS;
L->stack.top = L->stack.stack+L->Cstack.base;
status = 1;
}
L->errorJmp = oldErr;
return status;
}
/*
** returns 0 = chunk loaded; 1 = error; 2 = no more chunks to load
*/
static int protectedparser (ZIO *z, int bin)
{
int status;
TProtoFunc *tf;
jmp_buf myErrorJmp;
jmp_buf *oldErr = L->errorJmp;
L->errorJmp = &myErrorJmp;
if (setjmp(myErrorJmp) == 0) {
tf = bin ? luaU_undump1(z) : luaY_parser(z);
status = 0;
}
else {
tf = NULL;
status = 1;
}
L->errorJmp = oldErr;
if (status) return 1; /* error code */
if (tf == NULL) return 2; /* 'natural' end */
luaD_adjusttop(L->Cstack.base+1); /* one slot for the pseudo-function */
L->stack.stack[L->Cstack.base].ttype = LUA_T_PROTO;
L->stack.stack[L->Cstack.base].value.tf = tf;
luaV_closure(0);
return 0;
}
static int do_main (ZIO *z, int bin)
{
int status;
do {
long old_blocks = (luaC_checkGC(), L->nblocks);
status = protectedparser(z, bin);
if (status == 1) return 1; /* error */
else if (status == 2) return 0; /* 'natural' end */
else {
unsigned long newelems2 = 2*(L->nblocks-old_blocks);
L->GCthreshold += newelems2;
status = luaD_protectedrun(MULT_RET);
L->GCthreshold -= newelems2;
}
} while (bin && status == 0);
return status;
}
void luaD_gcIM (TObject *o)
{
TObject *im = luaT_getimbyObj(o, IM_GC);
if (ttype(im) != LUA_T_NIL) {
*L->stack.top = *o;
incr_top;
luaD_callTM(im, 1, 0);
}
}
int lua_dofile (char *filename)
{
ZIO z;
int status;
int c;
int bin;
FILE *f = (filename == NULL) ? stdin : fopen(filename, "r");
if (f == NULL)
return 2;
if (filename == NULL)
filename = "(stdin)";
c = fgetc(f);
ungetc(c, f);
bin = (c == ID_CHUNK);
if (bin)
f = freopen(filename, "rb", f); /* set binary mode */
luaZ_Fopen(&z, f, filename);
status = do_main(&z, bin);
if (f != stdin)
fclose(f);
return status;
}
#define SIZE_PREF 20 /* size of string prefix to appear in error messages */
#define SSIZE_PREF "20"
int lua_dostring (char *str)
{
int status;
char name[SIZE_PREF+25];
char *temp;
ZIO z;
if (str == NULL) return 1;
sprintf(name, "(dostring) >> %." SSIZE_PREF "s", str);
temp = strchr(name, '\n');
if (temp) *temp = 0; /* end string after first line */
luaZ_sopen(&z, str, name);
status = do_main(&z, 0);
return status;
}
#if 0
int lua_dobuffer (char *buff, int size)
{
int status;
ZIO z;
luaZ_mopen(&z, buff, size, "(buffer)");
status = do_main(&z, 1);
return status;
}
#endif

46
ldo.h
View File

@@ -1,46 +0,0 @@
/*
** $Id: ldo.h,v 1.3 1997/11/19 17:29:23 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"
#define MULT_RET 255
/*
** macro to increment stack top.
** There must be always an empty slot at the L->stack.top
*/
#define incr_top { if (L->stack.top >= L->stack.last) luaD_checkstack(1); \
L->stack.top++; }
/* macros to convert from lua_Object to (TObject *) and back */
#define Address(lo) ((lo)+L->stack.stack-1)
#define Ref(st) ((st)-L->stack.stack+1)
void luaD_init (void);
void luaD_adjusttop (StkId newtop);
void luaD_openstack (int nelems);
void luaD_lineHook (int line);
void luaD_callHook (StkId base, TProtoFunc *tf, int isreturn);
void luaD_call (StkId base, int nResults);
void luaD_callTM (TObject *f, int nParams, int nResults);
int luaD_protectedrun (int nResults);
void luaD_gcIM (TObject *o);
void luaD_travstack (int (*fn)(TObject *));
void luaD_checkstack (int n);
#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);
}

98
lfunc.c
View File

@@ -1,98 +0,0 @@
/*
** $Id: lfunc.c,v 1.7 1997/12/09 13:35:19 roberto Exp roberto $
** Auxiliar functions to manipulate prototypes and closures
** See Copyright Notice in lua.h
*/
#include <stdlib.h>
#include "lfunc.h"
#include "lmem.h"
#include "lstate.h"
#define gcsizeproto(p) 5 /* approximate "weight" for a prototype */
#define gcsizeclosure(c) 1 /* approximate "weight" for a closure */
Closure *luaF_newclosure (int nelems)
{
Closure *c = (Closure *)luaM_malloc(sizeof(Closure)+nelems*sizeof(TObject));
luaO_insertlist(&(L->rootcl), (GCnode *)c);
L->nblocks += gcsizeclosure(c);
c->nelems = nelems;
return c;
}
TProtoFunc *luaF_newproto (void)
{
TProtoFunc *f = luaM_new(TProtoFunc);
f->code = NULL;
f->lineDefined = 0;
f->fileName = NULL;
f->consts = NULL;
f->nconsts = 0;
f->locvars = NULL;
luaO_insertlist(&(L->rootproto), (GCnode *)f);
L->nblocks += gcsizeproto(f);
return f;
}
static void freefunc (TProtoFunc *f)
{
luaM_free(f->code);
luaM_free(f->locvars);
luaM_free(f->consts);
luaM_free(f);
}
void luaF_freeproto (TProtoFunc *l)
{
while (l) {
TProtoFunc *next = (TProtoFunc *)l->head.next;
L->nblocks -= gcsizeproto(l);
freefunc(l);
l = next;
}
}
void luaF_freeclosure (Closure *l)
{
while (l) {
Closure *next = (Closure *)l->head.next;
L->nblocks -= gcsizeclosure(l);
luaM_free(l);
l = next;
}
}
/*
** Look for n-th local variable at line "line" in function "func".
** Returns NULL if not found.
*/
char *luaF_getlocalname (TProtoFunc *func, int local_number, int line)
{
int count = 0;
char *varname = NULL;
LocVar *lv = func->locvars;
if (lv == NULL)
return NULL;
for (; lv->line != -1 && lv->line < line; lv++) {
if (lv->varname) { /* register */
if (++count == local_number)
varname = lv->varname->str;
}
else /* unregister */
if (--count < local_number)
varname = NULL;
}
return varname;
}

23
lfunc.h
View File

@@ -1,23 +0,0 @@
/*
** $Id: lfunc.h,v 1.4 1997/11/19 17:29:23 roberto Exp roberto $
** Lua Function structures
** See Copyright Notice in lua.h
*/
#ifndef lfunc_h
#define lfunc_h
#include "lobject.h"
TProtoFunc *luaF_newproto (void);
Closure *luaF_newclosure (int nelems);
void luaF_freeproto (TProtoFunc *l);
void luaF_freeclosure (Closure *l);
char *luaF_getlocalname (TProtoFunc *func, int local_number, int line);
#endif

286
lgc.c
View File

@@ -1,286 +0,0 @@
/*
** $Id: lgc.c,v 1.14 1997/12/17 20:48:58 roberto Exp roberto $
** Garbage Collector
** See Copyright Notice in lua.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 "lua.h"
static int markobject (TObject *o);
/*
** =======================================================
** REF mechanism
** =======================================================
*/
int luaC_ref (TObject *o, int lock)
{
int ref;
if (ttype(o) == LUA_T_NIL)
ref = -1; /* special ref for nil */
else {
for (ref=0; ref<L->refSize; ref++)
if (L->refArray[ref].status == FREE)
goto found;
/* no more empty spaces */ {
int oldSize = L->refSize;
L->refSize = luaM_growvector(&L->refArray, L->refSize, struct ref,
refEM, MAX_WORD);
for (ref=oldSize; ref<L->refSize; ref++)
L->refArray[ref].status = FREE;
ref = oldSize;
} found:
L->refArray[ref].o = *o;
L->refArray[ref].status = lock ? LOCK : HOLD;
}
return ref;
}
void lua_unref (int ref)
{
if (ref >= 0 && ref < L->refSize)
L->refArray[ref].status = FREE;
}
TObject* luaC_getref (int ref)
{
if (ref == -1)
return &luaO_nilobject;
if (ref >= 0 && ref < L->refSize &&
(L->refArray[ref].status == LOCK || L->refArray[ref].status == HOLD))
return &L->refArray[ref].o;
else
return NULL;
}
static void travlock (void)
{
int i;
for (i=0; i<L->refSize; i++)
if (L->refArray[i].status == LOCK)
markobject(&L->refArray[i].o);
}
static int ismarked (TObject *o)
{
/* valid only for locked objects */
switch (o->ttype) {
case LUA_T_STRING: case LUA_T_USERDATA:
return o->value.ts->head.marked;
case LUA_T_ARRAY:
return o->value.a->head.marked;
case LUA_T_CLOSURE:
return o->value.cl->head.marked;
case LUA_T_PROTO:
return o->value.tf->head.marked;
#ifdef DEBUG
case LUA_T_LINE: case LUA_T_CLMARK:
case LUA_T_CMARK: case LUA_T_PMARK:
lua_error("internal error");
#endif
default: /* nil, number or cproto */
return 1;
}
}
static void invalidaterefs (void)
{
int i;
for (i=0; i<L->refSize; i++)
if (L->refArray[i].status == HOLD && !ismarked(&L->refArray[i].o))
L->refArray[i].status = COLLECTED;
}
void luaC_hashcallIM (Hash *l)
{
TObject t;
ttype(&t) = LUA_T_ARRAY;
for (; l; l=(Hash *)l->head.next) {
avalue(&t) = l;
luaD_gcIM(&t);
}
}
void luaC_strcallIM (TaggedString *l)
{
TObject o;
ttype(&o) = LUA_T_USERDATA;
for (; l; l=(TaggedString *)l->head.next)
if (l->constindex == -1) { /* is userdata? */
tsvalue(&o) = l;
luaD_gcIM(&o);
}
}
static GCnode *listcollect (GCnode *l)
{
GCnode *frees = NULL;
while (l) {
GCnode *next = l->next;
l->marked = 0;
while (next && !next->marked) {
l->next = next->next;
next->next = frees;
frees = next;
next = l->next;
}
l = next;
}
return frees;
}
static void strmark (TaggedString *s)
{
if (!s->head.marked)
s->head.marked = 1;
}
static void protomark (TProtoFunc *f)
{
if (!f->head.marked) {
LocVar *v = f->locvars;
int i;
f->head.marked = 1;
if (f->fileName)
strmark(f->fileName);
for (i=0; i<f->nconsts; i++)
markobject(&f->consts[i]);
if (v) {
for (; v->line != -1; v++)
if (v->varname)
strmark(v->varname);
}
}
}
static void closuremark (Closure *f)
{
if (!f->head.marked) {
int i;
f->head.marked = 1;
for (i=f->nelems; i>=0; i--)
markobject(&f->consts[i]);
}
}
static void hashmark (Hash *h)
{
if (!h->head.marked) {
int i;
h->head.marked = 1;
for (i=0; i<nhash(h); i++) {
Node *n = node(h,i);
if (ttype(ref(n)) != LUA_T_NIL) {
markobject(&n->ref);
markobject(&n->val);
}
}
}
}
static void globalmark (void)
{
TaggedString *g;
for (g=(TaggedString *)L->rootglobal.next; g; g=(TaggedString *)g->head.next)
if (g->u.globalval.ttype != LUA_T_NIL) {
markobject(&g->u.globalval);
strmark(g); /* cannot collect non nil global variables */
}
}
static int markobject (TObject *o)
{
switch (ttype(o)) {
case LUA_T_USERDATA: case LUA_T_STRING:
strmark(tsvalue(o));
break;
case LUA_T_ARRAY:
hashmark(avalue(o));
break;
case LUA_T_CLOSURE: case LUA_T_CLMARK:
closuremark(o->value.cl);
break;
case LUA_T_PROTO: case LUA_T_PMARK:
protomark(o->value.tf);
break;
default: break; /* numbers, cprotos, etc */
}
return 0;
}
static void markall (void)
{
luaD_travstack(markobject); /* mark stack objects */
globalmark(); /* mark global variable values and names */
travlock(); /* mark locked objects */
luaT_travtagmethods(markobject); /* mark fallbacks */
}
long lua_collectgarbage (long limit)
{
unsigned long recovered = L->nblocks; /* to subtract nblocks after gc */
Hash *freetable;
TaggedString *freestr;
TProtoFunc *freefunc;
Closure *freeclos;
markall();
invalidaterefs();
freestr = luaS_collector();
freetable = (Hash *)listcollect(&(L->roottable));
freefunc = (TProtoFunc *)listcollect(&(L->rootproto));
freeclos = (Closure *)listcollect(&(L->rootcl));
L->GCthreshold *= 4; /* to avoid GC during GC */
luaC_hashcallIM(freetable); /* GC tag methods for tables */
luaC_strcallIM(freestr); /* GC tag methods for userdata */
luaD_gcIM(&luaO_nilobject); /* GC tag method for nil (signal end of GC) */
luaH_free(freetable);
luaS_free(freestr);
luaF_freeproto(freefunc);
luaF_freeclosure(freeclos);
recovered = recovered-L->nblocks;
L->GCthreshold = (limit == 0) ? 2*L->nblocks : L->nblocks+limit;
return recovered;
}
void luaC_checkGC (void)
{
if (L->nblocks >= L->GCthreshold)
lua_collectgarbage(0);
}

21
lgc.h
View File

@@ -1,21 +0,0 @@
/*
** $Id: lgc.h,v 1.3 1997/11/19 17:29:23 roberto Exp roberto $
** Garbage Collector
** See Copyright Notice in lua.h
*/
#ifndef lgc_h
#define lgc_h
#include "lobject.h"
void luaC_checkGC (void);
TObject* luaC_getref (int ref);
int luaC_ref (TObject *o, int lock);
void luaC_hashcallIM (Hash *l);
void luaC_strcallIM (TaggedString *l);
#endif

413
liolib.c
View File

@@ -1,413 +0,0 @@
/*
** $Id: liolib.c,v 1.13 1997/12/26 18:38:16 roberto Exp roberto $
** Standard I/O (and system) library
** See Copyright Notice in lua.h
*/
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include "lauxlib.h"
#include "lua.h"
#include "luadebug.h"
#include "lualib.h"
#ifndef OLD_ANSI
#include <locale.h>
#else
#define setlocale(a,b) 0
#define LC_ALL 0
#define LC_COLLATE 0
#define LC_CTYPE 0
#define LC_MONETARY 0
#define LC_NUMERIC 0
#define LC_TIME 0
#define strerror(e) "(no error message provided by operating system)"
#endif
#define CLOSEDTAG 2
#define IOTAG 1
#define FIRSTARG 3 /* 1st and 2nd are upvalues */
#define FINPUT "_INPUT"
#define FOUTPUT "_OUTPUT"
#ifdef POPEN
FILE *popen();
int pclose();
#else
#define popen(x,y) NULL /* that is, popen always fails */
#define pclose(x) (-1)
#endif
static int gettag (int i)
{
return lua_getnumber(lua_getparam(i));
}
static void pushresult (int i)
{
if (i)
lua_pushuserdata(NULL);
else {
lua_pushnil();
lua_pushstring(strerror(errno));
}
}
static int ishandler (lua_Object f)
{
if (lua_isuserdata(f)) {
if (lua_tag(f) == gettag(CLOSEDTAG))
lua_error("cannot access a closed file");
return lua_tag(f) == gettag(IOTAG);
}
else return 0;
}
static FILE *getfile (char *name)
{
lua_Object f = lua_getglobal(name);
if (!ishandler(f))
luaL_verror("global variable `%.50s' is not a file handle", name);
return lua_getuserdata(f);
}
static FILE *getfileparam (char *name, int *arg)
{
lua_Object f = lua_getparam(*arg);
if (ishandler(f)) {
(*arg)++;
return lua_getuserdata(f);
}
else
return getfile(name);
}
static void closefile (char *name)
{
FILE *f = getfile(name);
if (f == stdin || f == stdout) return;
if (pclose(f) == -1)
fclose(f);
lua_pushobject(lua_getglobal(name));
lua_settag(gettag(CLOSEDTAG));
}
static void setfile (FILE *f, char *name, int tag)
{
lua_pushusertag(f, tag);
lua_setglobal(name);
}
static void setreturn (FILE *f, char *name)
{
int tag = gettag(IOTAG);
setfile(f, name, tag);
lua_pushusertag(f, tag);
}
static void io_readfrom (void)
{
FILE *current;
lua_Object f = lua_getparam(FIRSTARG);
if (f == LUA_NOOBJECT) {
closefile(FINPUT);
current = stdin;
}
else if (lua_tag(f) == gettag(IOTAG))
current = lua_getuserdata(f);
else {
char *s = luaL_check_string(FIRSTARG);
current = (*s == '|') ? popen(s+1, "r") : fopen(s, "r");
if (current == NULL) {
pushresult(0);
return;
}
}
setreturn(current, FINPUT);
}
static void io_writeto (void)
{
FILE *current;
lua_Object f = lua_getparam(FIRSTARG);
if (f == LUA_NOOBJECT) {
closefile(FOUTPUT);
current = stdout;
}
else if (lua_tag(f) == gettag(IOTAG))
current = lua_getuserdata(f);
else {
char *s = luaL_check_string(FIRSTARG);
current = (*s == '|') ? popen(s+1,"w") : fopen(s,"w");
if (current == NULL) {
pushresult(0);
return;
}
}
setreturn(current, FOUTPUT);
}
static void io_appendto (void)
{
char *s = luaL_check_string(FIRSTARG);
FILE *fp = fopen (s, "a");
if (fp != NULL)
setreturn(fp, FOUTPUT);
else
pushresult(0);
}
#define NEED_OTHER (EOF-1) /* just some flag different from EOF */
static void io_read (void)
{
int arg = FIRSTARG;
FILE *f = getfileparam(FINPUT, &arg);
char *buff;
char *p = luaL_opt_string(arg, "[^\n]*{\n}");
int inskip = 0; /* to control {skips} */
int c = NEED_OTHER;
luaL_resetbuffer();
while (*p) {
if (*p == '{') {
inskip++;
p++;
}
else if (*p == '}') {
if (inskip == 0)
lua_error("unbalanced braces in read pattern");
inskip--;
p++;
}
else {
char *ep; /* get what is next */
int m; /* match result */
if (c == NEED_OTHER) c = getc(f);
m = luaI_singlematch((c == EOF) ? 0 : (char)c, p, &ep);
if (m) {
if (inskip == 0) luaL_addchar(c);
c = NEED_OTHER;
}
switch (*ep) {
case '*': /* repetition */
if (!m) p = ep+1; /* else stay in (repeat) the same item */
break;
case '?': /* optional */
p = ep+1; /* continues reading the pattern */
break;
default:
if (m) p = ep; /* continues reading the pattern */
else
goto break_while; /* pattern fails */
}
}
} break_while:
if (c >= 0) /* not EOF nor NEED_OTHER? */
ungetc(c, f);
luaL_addchar(0);
buff = luaL_buffer();
if (*buff != 0 || *p == 0) /* read something or did not fail? */
lua_pushstring(buff);
}
static void io_write (void)
{
int arg = FIRSTARG;
FILE *f = getfileparam(FOUTPUT, &arg);
int status = 1;
char *s;
while ((s = luaL_opt_string(arg++, NULL)) != NULL)
status = status && (fputs(s, f) != EOF);
pushresult(status);
}
static void io_execute (void)
{
lua_pushnumber(system(luaL_check_string(1)));
}
static void io_remove (void)
{
pushresult(remove(luaL_check_string(1)) == 0);
}
static void io_rename (void)
{
pushresult(rename(luaL_check_string(1),
luaL_check_string(2)) == 0);
}
static void io_tmpname (void)
{
lua_pushstring(tmpnam(NULL));
}
static void io_getenv (void)
{
lua_pushstring(getenv(luaL_check_string(1))); /* if NULL push nil */
}
static void io_date (void)
{
time_t t;
struct tm *tm;
char *s = luaL_opt_string(1, "%c");
char b[BUFSIZ];
time(&t); tm = localtime(&t);
if (strftime(b,sizeof(b),s,tm))
lua_pushstring(b);
else
lua_error("invalid `date' format");
}
static void setloc (void)
{
static int cat[] = {LC_ALL, LC_COLLATE, LC_CTYPE, LC_MONETARY, LC_NUMERIC,
LC_TIME};
int op = (int)luaL_opt_number(2, 0);
luaL_arg_check(0 <= op && op <= 5, 2, "invalid option");
lua_pushstring(setlocale(cat[op], luaL_check_string(1)));
}
static void io_exit (void)
{
lua_Object o = lua_getparam(1);
exit(lua_isnumber(o) ? (int)lua_getnumber(o) : 1);
}
static void io_debug (void)
{
while (1) {
char buffer[250];
fprintf(stderr, "lua_debug> ");
if (fgets(buffer, sizeof(buffer), stdin) == 0) return;
if (strcmp(buffer, "cont\n") == 0) return;
lua_dostring(buffer);
}
}
static void lua_printstack (FILE *f)
{
int level = 1; /* skip level 0 (it's this function) */
lua_Object func;
while ((func = lua_stackedfunction(level++)) != LUA_NOOBJECT) {
char *name;
int currentline;
char *filename;
int linedefined;
lua_funcinfo(func, &filename, &linedefined);
fprintf(f, (level==2) ? "Active Stack:\n\t" : "\t");
switch (*lua_getobjname(func, &name)) {
case 'g':
fprintf(f, "function %s", name);
break;
case 't':
fprintf(f, "`%s' tag method", name);
break;
default: {
if (linedefined == 0)
fprintf(f, "main of %s", filename);
else if (linedefined < 0)
fprintf(f, "%s", filename);
else
fprintf(f, "function (%s:%d)", filename, linedefined);
filename = NULL;
}
}
if ((currentline = lua_currentline(func)) > 0)
fprintf(f, " at line %d", currentline);
if (filename)
fprintf(f, " [in file %s]", filename);
fprintf(f, "\n");
}
}
static void errorfb (void)
{
fprintf(stderr, "lua: %s\n", lua_getstring(lua_getparam(1)));
lua_printstack(stderr);
}
static struct luaL_reg iolib[] = {
{"setlocale", setloc},
{"execute", io_execute},
{"remove", io_remove},
{"rename", io_rename},
{"tmpname", io_tmpname},
{"getenv", io_getenv},
{"date", io_date},
{"exit", io_exit},
{"debug", io_debug},
{"print_stack", errorfb}
};
static struct luaL_reg iolibtag[] = {
{"readfrom", io_readfrom},
{"writeto", io_writeto},
{"appendto", io_appendto},
{"read", io_read},
{"write", io_write}
};
static void openwithtags (void)
{
int iotag = lua_newtag();
int closedtag = lua_newtag();
int i;
for (i=0; i<sizeof(iolibtag)/sizeof(iolibtag[0]); i++) {
/* put both tags as upvalues for these functions */
lua_pushnumber(iotag);
lua_pushnumber(closedtag);
lua_pushCclosure(iolibtag[i].func, 2);
lua_setglobal(iolibtag[i].name);
}
setfile(stdin, FINPUT, iotag);
setfile(stdout, FOUTPUT, iotag);
setfile(stdin, "_STDIN", iotag);
setfile(stdout, "_STDOUT", iotag);
setfile(stderr, "_STDERR", iotag);
}
void lua_iolibopen (void)
{
luaL_openlib(iolib, (sizeof(iolib)/sizeof(iolib[0])));
openwithtags();
lua_pushcfunction(errorfb);
lua_seterrormethod();
}

437
llex.c
View File

@@ -1,437 +0,0 @@
/*
** $Id: llex.c,v 1.12 1997/12/22 17:52:20 roberto Exp roberto $
** Lexical Analizer
** See Copyright Notice in lua.h
*/
#include <ctype.h>
#include <string.h>
#include "lauxlib.h"
#include "llex.h"
#include "lmem.h"
#include "lobject.h"
#include "lparser.h"
#include "lstate.h"
#include "lstring.h"
#include "lstx.h"
#include "luadebug.h"
#include "lzio.h"
int lua_debug=0;
#define next(LS) (LS->current = zgetc(LS->lex_z))
static struct {
char *name;
int token;
} reserved [] = {
{"and", AND}, {"do", DO}, {"else", ELSE}, {"elseif", ELSEIF},
{"end", END}, {"function", FUNCTION}, {"if", IF}, {"local", LOCAL},
{"nil", NIL}, {"not", NOT}, {"or", OR}, {"repeat", REPEAT},
{"return", RETURN}, {"then", THEN}, {"until", UNTIL}, {"while", WHILE}
};
void luaX_init (void)
{
int i;
for (i=0; i<(sizeof(reserved)/sizeof(reserved[0])); i++) {
TaggedString *ts = luaS_new(reserved[i].name);
ts->head.marked = reserved[i].token; /* reserved word (always > 255) */
}
}
static void firstline (LexState *LS)
{
int c = zgetc(LS->lex_z);
if (c == '#') {
LS->linenumber++;
while ((c=zgetc(LS->lex_z)) != '\n' && c != EOZ) /* skip first line */;
}
zungetc(LS->lex_z);
}
void luaX_setinput (ZIO *z)
{
LexState *LS = L->lexstate;
LS->current = '\n';
LS->linelasttoken = 0;
LS->linenumber = 0;
LS->iflevel = 0;
LS->ifstate[0].skip = 0;
LS->ifstate[0].elsepart = 1; /* to avoid a free $else */
LS->lex_z = z;
firstline(LS);
luaL_resetbuffer();
}
/*
** =======================================================
** PRAGMAS
** =======================================================
*/
#define PRAGMASIZE 20
static void skipspace (LexState *LS)
{
while (LS->current == ' ' || LS->current == '\t' || LS->current == '\r')
next(LS);
}
static int checkcond (char *buff)
{
static char *opts[] = {"nil", "1", NULL};
int i = luaO_findstring(buff, opts);
if (i >= 0) return i;
else if (isalpha((unsigned char)buff[0]) || buff[0] == '_')
return luaS_globaldefined(buff);
else {
luaY_syntaxerror("invalid $if condition", buff);
return 0; /* to avoid warnings */
}
}
static void readname (LexState *LS, char *buff)
{
int i = 0;
skipspace(LS);
while (isalnum(LS->current) || LS->current == '_') {
if (i >= PRAGMASIZE) {
buff[PRAGMASIZE] = 0;
luaY_syntaxerror("pragma too long", buff);
}
buff[i++] = LS->current;
next(LS);
}
buff[i] = 0;
}
static void inclinenumber (LexState *LS);
static void ifskip (LexState *LS)
{
while (LS->ifstate[LS->iflevel].skip) {
if (LS->current == '\n')
inclinenumber(LS);
else if (LS->current == EOZ)
luaY_syntaxerror("input ends inside a $if", "");
else next(LS);
}
}
static void inclinenumber (LexState *LS)
{
static char *pragmas [] =
{"debug", "nodebug", "endinput", "end", "ifnot", "if", "else", NULL};
next(LS); /* skip '\n' */
++LS->linenumber;
if (LS->current == '$') { /* is a pragma? */
char buff[PRAGMASIZE+1];
int ifnot = 0;
int skip = LS->ifstate[LS->iflevel].skip;
next(LS); /* skip $ */
readname(LS, buff);
switch (luaO_findstring(buff, pragmas)) {
case 0: /* debug */
if (!skip) lua_debug = 1;
break;
case 1: /* nodebug */
if (!skip) lua_debug = 0;
break;
case 2: /* endinput */
if (!skip) {
LS->current = EOZ;
LS->iflevel = 0; /* to allow $endinput inside a $if */
}
break;
case 3: /* end */
if (LS->iflevel-- == 0)
luaY_syntaxerror("unmatched $end", "$end");
break;
case 4: /* ifnot */
ifnot = 1;
/* go through */
case 5: /* if */
if (LS->iflevel == MAX_IFS-1)
luaY_syntaxerror("too many nested $ifs", "$if");
readname(LS, buff);
LS->iflevel++;
LS->ifstate[LS->iflevel].elsepart = 0;
LS->ifstate[LS->iflevel].condition = checkcond(buff) ? !ifnot : ifnot;
LS->ifstate[LS->iflevel].skip = skip || !LS->ifstate[LS->iflevel].condition;
break;
case 6: /* else */
if (LS->ifstate[LS->iflevel].elsepart)
luaY_syntaxerror("unmatched $else", "$else");
LS->ifstate[LS->iflevel].elsepart = 1;
LS->ifstate[LS->iflevel].skip = LS->ifstate[LS->iflevel-1].skip ||
LS->ifstate[LS->iflevel].condition;
break;
default:
luaY_syntaxerror("unknown pragma", buff);
}
skipspace(LS);
if (LS->current == '\n') /* pragma must end with a '\n' ... */
inclinenumber(LS);
else if (LS->current != EOZ) /* or eof */
luaY_syntaxerror("invalid pragma format", buff);
ifskip(LS);
}
}
/*
** =======================================================
** LEXICAL ANALIZER
** =======================================================
*/
#define save(c) luaL_addchar(c)
#define save_and_next(LS) (save(LS->current), next(LS))
char *luaX_lasttoken (void)
{
save(0);
return luaL_buffer();
}
static int read_long_string (LexState *LS, YYSTYPE *l)
{
int cont = 0;
while (1) {
switch (LS->current) {
case EOZ:
save(0);
return WRONGTOKEN;
case '[':
save_and_next(LS);
if (LS->current == '[') {
cont++;
save_and_next(LS);
}
continue;
case ']':
save_and_next(LS);
if (LS->current == ']') {
if (cont == 0) goto endloop;
cont--;
save_and_next(LS);
}
continue;
case '\n':
save('\n');
inclinenumber(LS);
continue;
default:
save_and_next(LS);
}
} endloop:
save_and_next(LS); /* pass the second ']' */
L->Mbuffer[L->Mbuffnext-2] = 0; /* erases ']]' */
l->pTStr = luaS_new(L->Mbuffbase+2);
L->Mbuffer[L->Mbuffnext-2] = ']'; /* restores ']]' */
return STRING;
}
/* to avoid warnings; this declaration cannot be public since YYSTYPE
** cannot be visible in llex.h (otherwise there is an error, since
** the parser body redefines it!)
*/
int luaY_lex (YYSTYPE *l);
int luaY_lex (YYSTYPE *l)
{
LexState *LS = L->lexstate;
double a;
luaL_resetbuffer();
if (lua_debug)
luaY_codedebugline(LS->linelasttoken);
LS->linelasttoken = LS->linenumber;
while (1) {
switch (LS->current) {
case ' ': case '\t': case '\r': /* CR: to avoid problems with DOS */
next(LS);
continue;
case '\n':
inclinenumber(LS);
LS->linelasttoken = LS->linenumber;
continue;
case '-':
save_and_next(LS);
if (LS->current != '-') return '-';
do { next(LS); } while (LS->current != '\n' && LS->current != EOZ);
luaL_resetbuffer();
continue;
case '[':
save_and_next(LS);
if (LS->current != '[') return '[';
else {
save_and_next(LS); /* pass the second '[' */
return read_long_string(LS, l);
}
case '=':
save_and_next(LS);
if (LS->current != '=') return '=';
else { save_and_next(LS); return EQ; }
case '<':
save_and_next(LS);
if (LS->current != '=') return '<';
else { save_and_next(LS); return LE; }
case '>':
save_and_next(LS);
if (LS->current != '=') return '>';
else { save_and_next(LS); return GE; }
case '~':
save_and_next(LS);
if (LS->current != '=') return '~';
else { save_and_next(LS); return NE; }
case '"':
case '\'': {
int del = LS->current;
save_and_next(LS);
while (LS->current != del) {
switch (LS->current) {
case EOZ:
case '\n':
save(0);
return WRONGTOKEN;
case '\\':
next(LS); /* do not save the '\' */
switch (LS->current) {
case 'n': save('\n'); next(LS); break;
case 't': save('\t'); next(LS); break;
case 'r': save('\r'); next(LS); break;
case '\n': save('\n'); inclinenumber(LS); break;
default : save_and_next(LS); break;
}
break;
default:
save_and_next(LS);
}
}
next(LS); /* skip delimiter */
save(0);
l->pTStr = luaS_new(L->Mbuffbase+1);
L->Mbuffer[L->Mbuffnext-1] = del; /* restore delimiter */
return STRING;
}
case '.':
save_and_next(LS);
if (LS->current == '.')
{
save_and_next(LS);
if (LS->current == '.')
{
save_and_next(LS);
return DOTS; /* ... */
}
else return CONC; /* .. */
}
else if (!isdigit(LS->current)) return '.';
/* LS->current is a digit: goes through to number */
a=0.0;
goto fraction;
case '0': case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9':
a=0.0;
do {
a=10.0*a+(LS->current-'0');
save_and_next(LS);
} while (isdigit(LS->current));
if (LS->current == '.') {
save_and_next(LS);
if (LS->current == '.') {
save(0);
luaY_error(
"ambiguous syntax (decimal point x string concatenation)");
}
}
fraction:
{ double da=0.1;
while (isdigit(LS->current))
{
a+=(LS->current-'0')*da;
da/=10.0;
save_and_next(LS);
}
if (toupper(LS->current) == 'E') {
int e=0;
int neg;
double ea;
save_and_next(LS);
neg=(LS->current=='-');
if (LS->current == '+' || LS->current == '-') save_and_next(LS);
if (!isdigit(LS->current)) {
save(0); return WRONGTOKEN; }
do {
e=10.0*e+(LS->current-'0');
save_and_next(LS);
} while (isdigit(LS->current));
for (ea=neg?0.1:10.0; e>0; e>>=1)
{
if (e & 1) a*=ea;
ea*=ea;
}
}
l->vReal = a;
return NUMBER;
}
case EOZ:
save(0);
if (LS->iflevel > 0)
luaY_syntaxerror("input ends inside a $if", "");
return 0;
default:
if (LS->current != '_' && !isalpha(LS->current)) {
int c = LS->current;
save_and_next(LS);
return c;
}
else { /* identifier or reserved word */
TaggedString *ts;
do {
save_and_next(LS);
} while (isalnum(LS->current) || LS->current == '_');
save(0);
ts = luaS_new(L->Mbuffbase);
if (ts->head.marked > 255)
return ts->head.marked; /* reserved word */
l->pTStr = ts;
return NAME;
}
}
}
}

41
llex.h
View File

@@ -1,41 +0,0 @@
/*
** $Id: llex.h,v 1.6 1997/12/17 20:48:58 roberto Exp roberto $
** Lexical Analizer
** See Copyright Notice in lua.h
*/
#ifndef llex_h
#define llex_h
#include "lobject.h"
#include "lzio.h"
#define MAX_IFS 5
/* "ifstate" keeps the state of each nested $if the lexical is dealing with. */
struct ifState {
int elsepart; /* true if its in the $else part */
int condition; /* true if $if condition is true */
int skip; /* true if part must be skiped */
};
typedef struct LexState {
int current; /* look ahead character */
struct zio *lex_z; /* input stream */
int linenumber; /* input line counter */
int linelasttoken; /* line where last token was read */
int lastline; /* last line wherein a SETLINE was generated */
int iflevel; /* level of nested $if's (for lexical analysis) */
struct ifState ifstate[MAX_IFS];
} LexState;
void luaX_init (void);
void luaX_setinput (ZIO *z);
char *luaX_lasttoken (void);
#endif

View File

@@ -1,201 +0,0 @@
/*
** $Id: lmathlib.c,v 1.7 1997/12/09 13:35:19 roberto Exp roberto $
** Lua standard mathematical library
** See Copyright Notice in lua.h
*/
#include <stdlib.h>
#include <math.h>
#include "lauxlib.h"
#include "lua.h"
#include "lualib.h"
#ifdef M_PI
#define PI M_PI
#else
#define PI ((double)3.14159265358979323846)
#endif
#define FROMRAD(a) ((a)*(180.0/PI))
#define TORAD(a) ((a)*(PI/180.0))
static void math_abs (void)
{
double d = luaL_check_number(1);
if (d < 0) d = -d;
lua_pushnumber(d);
}
static void math_sin (void)
{
lua_pushnumber(sin(TORAD(luaL_check_number(1))));
}
static void math_cos (void)
{
lua_pushnumber(cos(TORAD(luaL_check_number(1))));
}
static void math_tan (void)
{
lua_pushnumber(tan(TORAD(luaL_check_number(1))));
}
static void math_asin (void)
{
lua_pushnumber(FROMRAD(asin(luaL_check_number(1))));
}
static void math_acos (void)
{
lua_pushnumber(FROMRAD(acos(luaL_check_number(1))));
}
static void math_atan (void)
{
lua_pushnumber(FROMRAD(atan(luaL_check_number(1))));
}
static void math_atan2 (void)
{
lua_pushnumber(FROMRAD(atan2(luaL_check_number(1), luaL_check_number(2))));
}
static void math_ceil (void)
{
lua_pushnumber(ceil(luaL_check_number(1)));
}
static void math_floor (void)
{
lua_pushnumber(floor(luaL_check_number(1)));
}
static void math_mod (void)
{
lua_pushnumber(fmod(luaL_check_number(1), luaL_check_number(2)));
}
static void math_sqrt (void)
{
lua_pushnumber(sqrt(luaL_check_number(1)));
}
static void math_pow (void)
{
lua_pushnumber(pow(luaL_check_number(1), luaL_check_number(2)));
}
static void math_log (void)
{
lua_pushnumber(log(luaL_check_number(1)));
}
static void math_log10 (void)
{
lua_pushnumber(log10(luaL_check_number(1)));
}
static void math_exp (void)
{
lua_pushnumber(exp(luaL_check_number(1)));
}
static void math_deg (void)
{
lua_pushnumber(luaL_check_number(1)*(180.0/PI));
}
static void math_rad (void)
{
lua_pushnumber(luaL_check_number(1)*(PI/180.0));
}
static void math_min (void)
{
int i = 1;
double dmin = luaL_check_number(i);
while (lua_getparam(++i) != LUA_NOOBJECT) {
double d = luaL_check_number(i);
if (d < dmin)
dmin = d;
}
lua_pushnumber(dmin);
}
static void math_max (void)
{
int i = 1;
double dmax = luaL_check_number(i);
while (lua_getparam(++i) != LUA_NOOBJECT) {
double d = luaL_check_number(i);
if (d > dmax)
dmax = d;
}
lua_pushnumber(dmax);
}
static void math_random (void)
{
/* the '%' is needed because on some sistems (SunOS!) "rand()" may */
/* return a value bigger than RAND_MAX... */
double r = (double)(rand()%RAND_MAX) / (double)RAND_MAX;
double l = luaL_opt_number(1, 0);
if (l == 0)
lua_pushnumber(r);
else
lua_pushnumber((int)(r*l)+1);
}
static void math_randomseed (void)
{
srand(luaL_check_number(1));
}
static struct 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},
{"sqrt", math_sqrt},
{"min", math_min},
{"max", math_max},
{"log", math_log},
{"log10", math_log10},
{"exp", math_exp},
{"deg", math_deg},
{"rad", math_rad},
{"random", math_random},
{"randomseed", math_randomseed}
};
/*
** Open math library
*/
void lua_mathlibopen (void)
{
luaL_openlib(mathlib, (sizeof(mathlib)/sizeof(mathlib[0])));
lua_pushstring("deg"); lua_setglobal("_TRIGMODE");
lua_pushcfunction(math_pow);
lua_pushnumber(0); /* to get its tag */
lua_settagmethod(lua_tag(lua_pop()), "pow");
lua_pushnumber(PI); lua_setglobal("PI");
}

110
lmem.c
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@@ -1,110 +0,0 @@
/*
** $Id: lmem.c,v 1.3 1997/12/01 20:30:44 roberto Exp roberto $
** Interface to Memory Manager
** See Copyright Notice in lua.h
*/
#include <stdlib.h>
#include "lmem.h"
#include "lstate.h"
#include "lua.h"
int luaM_growaux (void **block, unsigned long nelems, int size,
char *errormsg, unsigned long limit)
{
if (nelems >= limit)
lua_error(errormsg);
nelems = (nelems == 0) ? 32 : nelems*2;
if (nelems > limit)
nelems = limit;
*block = luaM_realloc(*block, nelems*size);
return (int)nelems;
}
#ifndef DEBUG
/*
** generic allocation routine.
** real ANSI systems do not need some of these tests,
** since realloc(NULL, s)==malloc(s) and realloc(b, 0)==free(b).
** But some systems (e.g. Sun OS) are not that ANSI...
*/
void *luaM_realloc (void *block, unsigned long size)
{
size_t s = (size_t)size;
if (s != size)
lua_error("Allocation Error: Block too big");
if (size == 0) {
if (block) {
free(block);
}
return NULL;
}
block = block ? realloc(block, s) : malloc(s);
if (block == NULL)
lua_error(memEM);
return block;
}
#else
/* DEBUG */
#include <assert.h>
#include <string.h>
#define MARK 55
unsigned long numblocks = 0;
unsigned long totalmem = 0;
static void *checkblock (void *block)
{
unsigned long *b = (unsigned long *)block - 1;
unsigned long size = *b;
assert(*(((char *)b)+size+sizeof(unsigned long)) == MARK);
numblocks--;
totalmem -= size;
return b;
}
void *luaM_realloc (void *block, unsigned long size)
{
unsigned long realsize = sizeof(unsigned long)+size+sizeof(char);
if (realsize != (size_t)realsize)
lua_error("Allocation Error: Block too big");
if (size == 0) { /* ANSI doen't need this, but some machines... */
if (block) {
memset(block, -1, *((unsigned long *)block-1)); /* erase block */
block = checkblock(block);
free(block);
}
return NULL;
}
if (block) {
block = checkblock(block);
block = (unsigned long *)realloc(block, realsize);
}
else
block = (unsigned long *)malloc(realsize);
if (block == NULL)
lua_error(memEM);
totalmem += size;
numblocks++;
*(unsigned long *)block = size;
*(((char *)block)+size+sizeof(unsigned long)) = MARK;
return (unsigned long *)block+1;
}
#endif

43
lmem.h
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@@ -1,43 +0,0 @@
/*
** $Id: lmem.h,v 1.4 1997/12/01 20:30:44 roberto Exp roberto $
** Interface to Memory Manager
** See Copyright Notice in lua.h
*/
#ifndef lmem_h
#define lmem_h
#ifndef NULL
#define NULL 0
#endif
/* memory error messages */
#define codeEM "code size overflow"
#define constantEM "constant table overflow"
#define refEM "reference table overflow"
#define tableEM "table overflow"
#define memEM "not enough memory"
void *luaM_realloc (void *oldblock, unsigned long size);
int luaM_growaux (void **block, unsigned long nelems, int size,
char *errormsg, unsigned long limit);
#define luaM_free(b) luaM_realloc((b), 0)
#define luaM_malloc(t) luaM_realloc(NULL, (t))
#define luaM_new(t) ((t *)luaM_malloc(sizeof(t)))
#define luaM_newvector(n,t) ((t *)luaM_malloc((n)*sizeof(t)))
#define luaM_growvector(old,n,t,e,l) \
(luaM_growaux((void**)old,n,sizeof(t),e,l))
#define luaM_reallocvector(v,n,t) ((t *)luaM_realloc(v,(n)*sizeof(t)))
#ifdef DEBUG
extern unsigned long numblocks;
extern unsigned long totalmem;
#endif
#endif

View File

@@ -1,94 +0,0 @@
/*
** $Id: lobject.c,v 1.9 1997/12/26 18:38:16 roberto Exp roberto $
** Some generic functions over Lua objects
** See Copyright Notice in lua.h
*/
#include <stdlib.h>
#include <string.h>
#include "lobject.h"
#include "lua.h"
char *luaO_typenames[] = { /* ORDER LUA_T */
"userdata", "number", "string", "table", "function", "function",
"nil", "function", "mark", "mark", "mark", "line", NULL
};
TObject luaO_nilobject = {LUA_T_NIL, {NULL}};
/* hash dimensions values */
static long dimensions[] =
{5L, 11L, 23L, 47L, 97L, 197L, 397L, 797L, 1597L, 3203L, 6421L,
12853L, 25717L, 51437L, 102811L, 205619L, 411233L, 822433L,
1644817L, 3289613L, 6579211L, 13158023L, MAX_INT};
int luaO_redimension (int oldsize)
{
int i;
for (i=0; dimensions[i]<MAX_INT; i++) {
if (dimensions[i] > oldsize)
return dimensions[i];
}
lua_error("table overflow");
return 0; /* to avoid warnings */
}
int luaO_equalObj (TObject *t1, TObject *t2)
{
if (ttype(t1) != ttype(t2)) return 0;
switch (ttype(t1)) {
case LUA_T_NIL: return 1;
case LUA_T_NUMBER: return nvalue(t1) == nvalue(t2);
case LUA_T_STRING: case LUA_T_USERDATA: return svalue(t1) == svalue(t2);
case LUA_T_ARRAY: return avalue(t1) == avalue(t2);
case LUA_T_PROTO: return tfvalue(t1) == tfvalue(t2);
case LUA_T_CPROTO: return fvalue(t1) == fvalue(t2);
case LUA_T_CLOSURE: return t1->value.cl == t2->value.cl;
default:
lua_error("internal error in `lua_equalObj'");
return 0; /* UNREACHEABLE */
}
}
int luaO_findstring (char *name, char *list[])
{
int i;
for (i=0; list[i]; i++)
if (strcmp(list[i], name) == 0)
return i;
return -1; /* name not found */
}
void luaO_insertlist (GCnode *root, GCnode *node)
{
node->next = root->next;
root->next = node;
node->marked = 0;
}
#ifdef OLD_ANSI
void luaO_memup (void *dest, void *src, int size)
{
char *d = dest;
char *s = src;
while (size--) d[size]=s[size];
}
void luaO_memdown (void *dest, void *src, int size)
{
char *d = dest;
char *s = src;
int i;
for (i=0; i<size; i++) d[i]=s[i];
}
#endif

184
lobject.h
View File

@@ -1,184 +0,0 @@
/*
** $Id: lobject.h,v 1.15 1998/01/13 13:27:25 roberto Exp $
** Type definitions for Lua objects
** See Copyright Notice in lua.h
*/
#ifndef lobject_h
#define lobject_h
#include <limits.h>
#include "lua.h"
/*
** "real" is the type "number" of Lua
** GREP LUA_NUMBER to change that
*/
#ifndef real
#define real float
#endif
#define Byte lua_Byte /* some systems have Byte as a predefined type */
typedef unsigned char Byte; /* unsigned 8 bits */
#define MAX_WORD (65534U) /* maximum value of a word (-2 for safety) */
#define MAX_INT (INT_MAX-2) /* maximum value of a int (-2 for safety) */
typedef unsigned int IntPoint; /* unsigned with same size as a pointer (for hashing) */
/*
** Lua TYPES
** WARNING: if you change the order of this enumeration,
** grep "ORDER LUA_T"
*/
typedef enum {
LUA_T_USERDATA = 0, /* tag default for userdata */
LUA_T_NUMBER = -1, /* fixed tag for numbers */
LUA_T_STRING = -2, /* fixed tag for strings */
LUA_T_ARRAY = -3, /* tag default for tables (or arrays) */
LUA_T_PROTO = -4, /* fixed tag for functions */
LUA_T_CPROTO = -5, /* fixed tag for Cfunctions */
LUA_T_NIL = -6, /* last "pre-defined" tag */
LUA_T_CLOSURE = -7,
LUA_T_CLMARK = -8, /* mark for closures */
LUA_T_PMARK = -9, /* mark for Lua prototypes */
LUA_T_CMARK = -10, /* mark for C prototypes */
LUA_T_LINE = -11
} lua_Type;
#define NUM_TYPES 11
#define NUM_TAGS 7
typedef union {
lua_CFunction f; /* LUA_T_CPROTO, LUA_T_CMARK */
real n; /* LUA_T_NUMBER */
struct TaggedString *ts; /* LUA_T_STRING, LUA_T_USERDATA */
struct TProtoFunc *tf; /* LUA_T_PROTO, LUA_T_PMARK */
struct Closure *cl; /* LUA_T_CLOSURE, LUA_T_CLMARK */
struct Hash *a; /* LUA_T_ARRAY */
int i; /* LUA_T_LINE */
} Value;
typedef struct TObject {
lua_Type ttype;
Value value;
} TObject;
/*
** generic header for garbage collector lists
*/
typedef struct GCnode {
struct GCnode *next;
int marked;
} GCnode;
/*
** String headers for string table
*/
typedef struct TaggedString {
GCnode head;
int constindex; /* hint to reuse constants (= -1 if this is a userdata) */
unsigned long hash;
union {
TObject globalval;
struct {
int tag;
void *v; /* if this is a userdata, here is its value */
} d;
} u;
char str[1]; /* \0 byte already reserved */
} TaggedString;
/*
** Function Prototypes
*/
typedef struct TProtoFunc {
GCnode head;
struct TObject *consts;
int nconsts;
Byte *code; /* ends with opcode ENDCODE */
int lineDefined;
TaggedString *fileName;
struct LocVar *locvars; /* ends with line = -1 */
} TProtoFunc;
typedef struct LocVar {
TaggedString *varname; /* NULL signals end of scope */
int line;
} LocVar;
/* Macros to access structure members */
#define ttype(o) ((o)->ttype)
#define nvalue(o) ((o)->value.n)
#define svalue(o) ((o)->value.ts->str)
#define tsvalue(o) ((o)->value.ts)
#define clvalue(o) ((o)->value.cl)
#define avalue(o) ((o)->value.a)
#define fvalue(o) ((o)->value.f)
#define tfvalue(o) ((o)->value.tf)
#define protovalue(o) ((o)->value.cl->consts)
/*
** Closures
*/
typedef struct Closure {
GCnode head;
int nelems; /* not included the first one (always the prototype) */
TObject consts[1]; /* at least one for prototype */
} Closure;
typedef struct node {
TObject ref;
TObject val;
} Node;
typedef struct Hash {
GCnode head;
Node *node;
int nhash;
int nuse;
int htag;
} Hash;
extern char *luaO_typenames[];
extern TObject luaO_nilobject;
int luaO_equalObj (TObject *t1, TObject *t2);
int luaO_redimension (int oldsize);
int luaO_findstring (char *name, char *list[]);
void luaO_insertlist (GCnode *root, GCnode *node);
#ifdef OLD_ANSI
void luaO_memup (void *dest, void *src, int size);
void luaO_memdown (void *dest, void *src, int size);
#else
#include <string.h>
#define luaO_memup(d,s,n) memmove(d,s,n)
#define luaO_memdown(d,s,n) memmove(d,s,n)
#endif
#endif

View File

@@ -1,182 +0,0 @@
/*
** $Id: lopcodes.h,v 1.14 1997/12/30 19:08:23 roberto Exp roberto $
** Opcodes for Lua virtual machine
** See Copyright Notice in lua.h
*/
#ifndef lopcodes_h
#define lopcodes_h
/*
** NOTICE: variants of the same opcode must be consecutive: First, those
** with byte parameter, then with built-in parameters, and last with
** word parameter.
*/
typedef enum {
/* name parm before after side effect
-----------------------------------------------------------------------------*/
ENDCODE,/* - - - */
PUSHNIL,/* b - nil_0...nil_b */
PUSHNIL0,/* - - nil */
PUSHNUMBER,/* b - (float)b */
PUSHNUMBER0,/* - - 0.0 */
PUSHNUMBER1,/* - - 1.0 */
PUSHNUMBER2,/* - - 2.0 */
PUSHNUMBERW,/* w - (float)w */
PUSHCONSTANT,/* b - CNST[b] */
PUSHCONSTANT0,/*- - CNST[0] */
PUSHCONSTANT1,/*- - CNST[1] */
PUSHCONSTANT2,/*- - CNST[2] */
PUSHCONSTANT3,/*- - CNST[3] */
PUSHCONSTANT4,/*- - CNST[4] */
PUSHCONSTANT5,/*- - CNST[5] */
PUSHCONSTANT6,/*- - CNST[6] */
PUSHCONSTANT7,/*- - CNST[7] */
PUSHCONSTANTW,/*w - CNST[w] */
PUSHUPVALUE,/* b - Closure[b] */
PUSHUPVALUE0,/* - - Closure[0] */
PUSHUPVALUE1,/* - - Closure[1] */
PUSHLOCAL,/* b - LOC[b] */
PUSHLOCAL0,/* - - LOC[0] */
PUSHLOCAL1,/* - - LOC[1] */
PUSHLOCAL2,/* - - LOC[2] */
PUSHLOCAL3,/* - - LOC[3] */
PUSHLOCAL4,/* - - LOC[4] */
PUSHLOCAL5,/* - - LOC[5] */
PUSHLOCAL6,/* - - LOC[6] */
PUSHLOCAL7,/* - - LOC[7] */
GETGLOBAL,/* b - VAR[CNST[b]] */
GETGLOBAL0,/* - - VAR[CNST[0]] */
GETGLOBAL1,/* - - VAR[CNST[1]] */
GETGLOBAL2,/* - - VAR[CNST[2]] */
GETGLOBAL3,/* - - VAR[CNST[3]] */
GETGLOBAL4,/* - - VAR[CNST[4]] */
GETGLOBAL5,/* - - VAR[CNST[5]] */
GETGLOBAL6,/* - - VAR[CNST[6]] */
GETGLOBAL7,/* - - VAR[CNST[7]] */
GETGLOBALW,/* w - VAR[CNST[w]] */
GETTABLE,/* - i t t[i] */
GETDOTTED,/* b t t[CONST[b]] */
GETDOTTED0,/* - t t[CONST[0]] */
GETDOTTED1,/* - t t[CONST[1]] */
GETDOTTED2,/* - t t[CONST[2]] */
GETDOTTED3,/* - t t[CONST[3]] */
GETDOTTED4,/* - t t[CONST[4]] */
GETDOTTED5,/* - t t[CONST[5]] */
GETDOTTED6,/* - t t[CONST[6]] */
GETDOTTED7,/* - t t[CONST[7]] */
GETDOTTEDW,/* w t t[CONST[w]] */
PUSHSELF,/* b t t t[CNST[b]] */
PUSHSELF0,/* - t t t[CNST[0]] */
PUSHSELF1,/* - t t t[CNST[1]] */
PUSHSELF2,/* - t t t[CNST[2]] */
PUSHSELF3,/* - t t t[CNST[3]] */
PUSHSELF4,/* - t t t[CNST[4]] */
PUSHSELF5,/* - t t t[CNST[5]] */
PUSHSELF6,/* - t t t[CNST[6]] */
PUSHSELF7,/* - t t t[CNST[7]] */
PUSHSELFW,/* w t t t[CNST[w]] */
CREATEARRAY,/* b - newarray(size = b) */
CREATEARRAY0,/* - - newarray(size = 0) */
CREATEARRAY1,/* - - newarray(size = 1) */
CREATEARRAYW,/* w - newarray(size = w) */
SETLOCAL,/* b x - LOC[b]=x */
SETLOCAL0,/* - x - LOC[0]=x */
SETLOCAL1,/* - x - LOC[1]=x */
SETLOCAL2,/* - x - LOC[2]=x */
SETLOCAL3,/* - x - LOC[3]=x */
SETLOCAL4,/* - x - LOC[4]=x */
SETLOCAL5,/* - x - LOC[5]=x */
SETLOCAL6,/* - x - LOC[6]=x */
SETLOCAL7,/* - x - LOC[7]=x */
SETGLOBAL,/* b x - VAR[CNST[b]]=x */
SETGLOBAL0,/* - x - VAR[CNST[0]]=x */
SETGLOBAL1,/* - x - VAR[CNST[1]]=x */
SETGLOBAL2,/* - x - VAR[CNST[2]]=x */
SETGLOBAL3,/* - x - VAR[CNST[3]]=x */
SETGLOBAL4,/* - x - VAR[CNST[4]]=x */
SETGLOBAL5,/* - x - VAR[CNST[5]]=x */
SETGLOBAL6,/* - x - VAR[CNST[6]]=x */
SETGLOBAL7,/* - x - VAR[CNST[7]]=x */
SETGLOBALW,/* w x - VAR[CNST[w]]=x */
SETTABLE0,/* - v i t - t[i]=v */
SETTABLE,/* b v a_b...a_1 i t a_b...a_1 i t t[i]=v */
SETLIST,/* b c v_b...v_1 t - t[i+c*FPF]=v_i */
SETLIST0,/* b v_b...v_1 t - t[i]=v_i */
SETLISTW,/* w c v_b...v_1 t - t[i+c*FPF]=v_i */
SETMAP,/* b v_b k_b ...v_0 k_0 t t t[k_i]=v_i */
SETMAP0,/* - v_0 k_0 t t t[k_0]=v_0 */
EQOP,/* - y x (x==y)? 1 : nil */
NEQOP,/* - y x (x~=y)? 1 : nil */
LTOP,/* - y x (x<y)? 1 : nil */
LEOP,/* - y x (x<y)? 1 : nil */
GTOP,/* - y x (x>y)? 1 : nil */
GEOP,/* - y x (x>=y)? 1 : nil */
ADDOP,/* - y x x+y */
SUBOP,/* - y x x-y */
MULTOP,/* - y x x*y */
DIVOP,/* - y x x/y */
POWOP,/* - y x x^y */
CONCOP,/* - y x x..y */
MINUSOP,/* - x -x */
NOTOP,/* - x (x==nil)? 1 : nil */
ONTJMP,/* b x (x!=nil)? x : - (x!=nil)? PC+=b */
ONTJMPW,/* w x (x!=nil)? x : - (x!=nil)? PC+=w */
ONFJMP,/* b x (x==nil)? x : - (x==nil)? PC+=b */
ONFJMPW,/* w x (x==nil)? x : - (x==nil)? PC+=w */
JMP,/* b - - PC+=b */
JMPW,/* w - - PC+=w */
IFFJMP,/* b x - (x==nil)? PC+=b */
IFFJMPW,/* w x - (x==nil)? PC+=w */
IFTUPJMP,/* b x - (x!=nil)? PC-=b */
IFTUPJMPW,/* w x - (x!=nil)? PC-=w */
IFFUPJMP,/* b x - (x==nil)? PC-=b */
IFFUPJMPW,/* w x - (x==nil)? PC-=w */
CLOSURE,/* b proto v_b...v_1 c(proto) */
CLOSURE0,/* - proto c(proto) */
CLOSURE1,/* - proto v_1 c(proto) */
CALLFUNC,/* b c v_c...v_1 f r_b...r_1 f(v1,...,v_c) */
CALLFUNC0,/* b v_b...v_1 f - f(v1,...,v_b) */
CALLFUNC1,/* b v_b...v_1 f r_1 f(v1,...,v_b) */
RETCODE,/* b - - */
SETLINE,/* b - - LINE=b */
SETLINEW,/* w - - LINE=w */
POP,/* b - - TOP-=(b+1) */
POP0,/* - - - TOP-=1 */
POP1/* - - - TOP-=2 */
} OpCode;
#define RFIELDS_PER_FLUSH 32 /* records (SETMAP) */
#define LFIELDS_PER_FLUSH 64 /* lists (SETLIST) */
#define ZEROVARARG 64
#endif

View File

@@ -1,20 +0,0 @@
/*
** $Id: lparser.h,v 1.1 1997/09/16 19:25:59 roberto Exp roberto $
** Syntax analizer and code generator
** See Copyright Notice in lua.h
*/
#ifndef lparser_h
#define lparser_h
#include "lobject.h"
#include "lzio.h"
void luaY_codedebugline (int line);
TProtoFunc *luaY_parser (ZIO *z);
void luaY_error (char *s);
void luaY_syntaxerror (char *s, char *token);
#endif

View File

@@ -1,78 +0,0 @@
/*
** $Id: lstate.c,v 1.4 1997/12/11 14:48:46 roberto Exp roberto $
** Global State
** See Copyright Notice in lua.h
*/
#include "lbuiltin.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"
LState *lua_state = NULL;
void lua_open (void)
{
if (lua_state) return;
lua_state = luaM_new(LState);
L->numCblocks = 0;
L->Cstack.base = 0;
L->Cstack.lua2C = 0;
L->Cstack.num = 0;
L->errorJmp = NULL;
L->rootproto.next = NULL;
L->rootproto.marked = 0;
L->rootcl.next = NULL;
L->rootcl.marked = 0;
L->rootglobal.next = NULL;
L->rootglobal.marked = 0;
L->roottable.next = NULL;
L->roottable.marked = 0;
L->refArray = NULL;
L->refSize = 0;
L->Mbuffsize = 0;
L->Mbuffnext = 0;
L->Mbuffbase = NULL;
L->Mbuffer = NULL;
L->GCthreshold = GARBAGE_BLOCK;
L->nblocks = 0;
luaD_init();
luaS_init();
luaX_init();
luaT_init();
luaB_predefine();
}
void lua_close (void)
{
TaggedString *alludata = luaS_collectudata();
L->GCthreshold = MAX_INT; /* to avoid GC during GC */
luaC_hashcallIM((Hash *)L->roottable.next); /* GC t.methods for tables */
luaC_strcallIM(alludata); /* GC tag methods for userdata */
luaD_gcIM(&luaO_nilobject); /* GC tag method for nil (signal end of GC) */
luaH_free((Hash *)L->roottable.next);
luaF_freeproto((TProtoFunc *)L->rootproto.next);
luaF_freeclosure((Closure *)L->rootcl.next);
luaS_free(alludata);
luaS_freeall();
luaM_free(L->stack.stack);
luaM_free(L->IMtable);
luaM_free(L->refArray);
luaM_free(L->Mbuffer);
luaM_free(L);
L = NULL;
#ifdef DEBUG
printf("total de blocos: %ld\n", numblocks);
printf("total de memoria: %ld\n", totalmem);
#endif
}

View File

@@ -1,81 +0,0 @@
/*
** $Id: lstate.h,v 1.6 1997/12/17 20:48:58 roberto Exp roberto $
** Global State
** See Copyright Notice in lua.h
*/
#ifndef lstate_h
#define lstate_h
#include "lobject.h"
#define MAX_C_BLOCKS 10
#define GARBAGE_BLOCK 150
typedef int StkId; /* index to stack elements */
struct Stack {
TObject *top;
TObject *stack;
TObject *last;
};
struct C_Lua_Stack {
StkId base; /* when Lua calls C or C calls Lua, points to */
/* the first slot after the last parameter. */
StkId lua2C; /* points to first element of "array" lua2C */
int num; /* size of "array" lua2C */
};
typedef struct {
int size;
int nuse; /* number of elements (including EMPTYs) */
TaggedString **hash;
} stringtable;
struct ref {
TObject o;
enum {LOCK, HOLD, FREE, COLLECTED} status;
};
typedef struct LState {
struct Stack stack; /* Lua stack */
struct C_Lua_Stack Cstack; /* C2lua struct */
void *errorJmp; /* current error recover point */
TObject errorim; /* error tag method */
GCnode rootproto; /* list of all prototypes */
GCnode rootcl; /* list of all closures */
GCnode roottable; /* list of all tables */
GCnode rootglobal; /* list of strings with global values */
stringtable *string_root; /* array of hash tables for strings and udata */
struct IM *IMtable; /* table for tag methods */
int IMtable_size; /* size of IMtable */
int last_tag; /* last used tag in IMtable */
struct FuncState *mainState, *currState; /* point to local structs in yacc */
struct LexState *lexstate; /* point to local struct in yacc */
struct ref *refArray; /* locked objects */
int refSize; /* size of refArray */
unsigned long GCthreshold;
unsigned long nblocks; /* number of 'blocks' currently allocated */
char *Mbuffer; /* global buffer */
char *Mbuffbase; /* current first position of Mbuffer */
int Mbuffsize; /* size of Mbuffer */
int Mbuffnext; /* next position to fill in Mbuffer */
struct C_Lua_Stack Cblocks[MAX_C_BLOCKS];
int numCblocks; /* number of nested Cblocks */
} LState;
extern LState *lua_state;
#define L lua_state
#endif

262
lstring.c
View File

@@ -1,262 +0,0 @@
/*
** $Id: lstring.c,v 1.9 1997/12/30 19:15:52 roberto Exp roberto $
** String table (keeps all strings handled by Lua)
** See Copyright Notice in lua.h
*/
#include <string.h>
#include "lmem.h"
#include "lobject.h"
#include "lstate.h"
#include "lstring.h"
#include "lua.h"
#define NUM_HASHS 61
#define gcsizestring(l) (1+(l/64)) /* "weight" for a string with length 'l' */
static TaggedString EMPTY = {{NULL, 2}, 0, 0L, {{LUA_T_NIL, {NULL}}}, {0}};
void luaS_init (void)
{
int i;
L->string_root = luaM_newvector(NUM_HASHS, stringtable);
for (i=0; i<NUM_HASHS; i++) {
L->string_root[i].size = 0;
L->string_root[i].nuse = 0;
L->string_root[i].hash = NULL;
}
}
static unsigned long hash (char *s, int tag)
{
unsigned long h;
if (tag != LUA_T_STRING)
h = (unsigned long)s;
else {
h = 0;
while (*s)
h = ((h<<5)-h)^(unsigned char)*(s++);
}
return h;
}
static void grow (stringtable *tb)
{
int newsize = luaO_redimension(tb->size);
TaggedString **newhash = luaM_newvector(newsize, TaggedString *);
int i;
for (i=0; i<newsize; i++)
newhash[i] = NULL;
/* rehash */
tb->nuse = 0;
for (i=0; i<tb->size; i++) {
if (tb->hash[i] != NULL && tb->hash[i] != &EMPTY) {
int h = tb->hash[i]->hash%newsize;
while (newhash[h])
h = (h+1)%newsize;
newhash[h] = tb->hash[i];
tb->nuse++;
}
}
luaM_free(tb->hash);
tb->size = newsize;
tb->hash = newhash;
}
static TaggedString *newone (char *buff, int tag, unsigned long h)
{
TaggedString *ts;
if (tag == LUA_T_STRING) {
long l = strlen(buff);
ts = (TaggedString *)luaM_malloc(sizeof(TaggedString)+l);
strcpy(ts->str, buff);
ts->u.globalval.ttype = LUA_T_NIL; /* initialize global value */
ts->constindex = 0;
L->nblocks += gcsizestring(l);
}
else {
ts = (TaggedString *)luaM_malloc(sizeof(TaggedString));
ts->u.d.v = buff;
ts->u.d.tag = tag == LUA_ANYTAG ? 0 : tag;
ts->constindex = -1; /* tag -> this is a userdata */
L->nblocks++;
}
ts->head.marked = 0;
ts->head.next = (GCnode *)ts; /* signal it is in no list */
ts->hash = h;
return ts;
}
static TaggedString *insert (char *buff, int tag, stringtable *tb)
{
TaggedString *ts;
unsigned long h = hash(buff, tag);
int size = tb->size;
int i;
int j = -1;
if ((long)tb->nuse*3 >= (long)size*2) {
grow(tb);
size = tb->size;
}
for (i = h%size; (ts = tb->hash[i]) != NULL; ) {
if (ts == &EMPTY)
j = i;
else if ((ts->constindex >= 0) ? /* is a string? */
(tag == LUA_T_STRING && (strcmp(buff, ts->str) == 0)) :
((tag == ts->u.d.tag || tag == LUA_ANYTAG) && buff == ts->u.d.v))
return ts;
if (++i == size) i=0;
}
/* not found */
if (j != -1) /* is there an EMPTY space? */
i = j;
else
tb->nuse++;
ts = tb->hash[i] = newone(buff, tag, h);
return ts;
}
TaggedString *luaS_createudata (void *udata, int tag)
{
return insert(udata, tag, &L->string_root[(unsigned)udata%NUM_HASHS]);
}
TaggedString *luaS_new (char *str)
{
return insert(str, LUA_T_STRING, &L->string_root[(unsigned)str[0]%NUM_HASHS]);
}
TaggedString *luaS_newfixedstring (char *str)
{
TaggedString *ts = luaS_new(str);
if (ts->head.marked == 0)
ts->head.marked = 2; /* avoid GC */
return ts;
}
void luaS_free (TaggedString *l)
{
while (l) {
TaggedString *next = (TaggedString *)l->head.next;
L->nblocks -= (l->constindex == -1) ? 1 : gcsizestring(strlen(l->str));
luaM_free(l);
l = next;
}
}
/*
** Garbage collection functions.
*/
static void remove_from_list (GCnode *l)
{
while (l) {
GCnode *next = l->next;
while (next && !next->marked)
next = l->next = next->next;
l = next;
}
}
TaggedString *luaS_collector (void)
{
TaggedString *frees = NULL;
int i;
remove_from_list(&(L->rootglobal));
for (i=0; i<NUM_HASHS; i++) {
stringtable *tb = &L->string_root[i];
int j;
for (j=0; j<tb->size; j++) {
TaggedString *t = tb->hash[j];
if (t == NULL) continue;
if (t->head.marked == 1)
t->head.marked = 0;
else if (!t->head.marked) {
t->head.next = (GCnode *)frees;
frees = t;
tb->hash[j] = &EMPTY;
}
}
}
return frees;
}
TaggedString *luaS_collectudata (void)
{
TaggedString *frees = NULL;
int i;
L->rootglobal.next = NULL; /* empty list of globals */
for (i=0; i<NUM_HASHS; i++) {
stringtable *tb = &L->string_root[i];
int j;
for (j=0; j<tb->size; j++) {
TaggedString *t = tb->hash[j];
if (t == NULL || t == &EMPTY || t->constindex != -1)
continue; /* get only user datas */
t->head.next = (GCnode *)frees;
frees = t;
tb->hash[j] = &EMPTY;
}
}
return frees;
}
void luaS_freeall (void)
{
int i;
for (i=0; i<NUM_HASHS; i++) {
stringtable *tb = &L->string_root[i];
int j;
for (j=0; j<tb->size; j++) {
TaggedString *t = tb->hash[j];
if (t == &EMPTY) continue;
luaM_free(t);
}
luaM_free(tb->hash);
}
luaM_free(L->string_root);
}
void luaS_rawsetglobal (TaggedString *ts, TObject *newval)
{
ts->u.globalval = *newval;
if (ts->head.next == (GCnode *)ts) { /* is not in list? */
ts->head.next = L->rootglobal.next;
L->rootglobal.next = (GCnode *)ts;
}
}
char *luaS_travsymbol (int (*fn)(TObject *))
{
TaggedString *g;
for (g=(TaggedString *)L->rootglobal.next; g; g=(TaggedString *)g->head.next)
if (fn(&g->u.globalval))
return g->str;
return NULL;
}
int luaS_globaldefined (char *name)
{
TaggedString *ts = luaS_new(name);
return ts->u.globalval.ttype != LUA_T_NIL;
}

View File

@@ -1,27 +0,0 @@
/*
** $Id: lstring.h,v 1.5 1997/11/26 18:53:45 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"
void luaS_init (void);
TaggedString *luaS_createudata (void *udata, int tag);
TaggedString *luaS_collector (void);
void luaS_free (TaggedString *l);
TaggedString *luaS_new (char *str);
TaggedString *luaS_newfixedstring (char *str);
void luaS_rawsetglobal (TaggedString *ts, TObject *newval);
char *luaS_travsymbol (int (*fn)(TObject *));
int luaS_globaldefined (char *name);
TaggedString *luaS_collectudata (void);
void luaS_freeall (void);
#endif

509
lstrlib.c
View File

@@ -1,509 +0,0 @@
/*
** $Id: lstrlib.c,v 1.6 1998/01/09 14:44:55 roberto Exp $
** Standard library for strings and pattern-matching
** See Copyright Notice in lua.h
*/
#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "lauxlib.h"
#include "lua.h"
#include "lualib.h"
static void addnchar (char *s, int n)
{
char *b = luaL_openspace(n);
strncpy(b, s, n);
luaL_addsize(n);
}
static void addstr (char *s)
{
addnchar(s, strlen(s));
}
static void str_len (void)
{
lua_pushnumber(strlen(luaL_check_string(1)));
}
static void closeandpush (void)
{
luaL_addchar(0);
lua_pushstring(luaL_buffer());
}
static void str_sub (void)
{
char *s = luaL_check_string(1);
long l = strlen(s);
long start = (long)luaL_check_number(2);
long end = (long)luaL_opt_number(3, -1);
if (start < 0) start = l+start+1;
if (end < 0) end = l+end+1;
if (1 <= start && start <= end && end <= l) {
luaL_resetbuffer();
addnchar(s+start-1, end-start+1);
closeandpush();
}
else lua_pushstring("");
}
static void str_lower (void)
{
char *s;
luaL_resetbuffer();
for (s = luaL_check_string(1); *s; s++)
luaL_addchar(tolower((unsigned char)*s));
closeandpush();
}
static void str_upper (void)
{
char *s;
luaL_resetbuffer();
for (s = luaL_check_string(1); *s; s++)
luaL_addchar(toupper((unsigned char)*s));
closeandpush();
}
static void str_rep (void)
{
char *s = luaL_check_string(1);
int n = (int)luaL_check_number(2);
luaL_resetbuffer();
while (n-- > 0)
addstr(s);
closeandpush();
}
static void str_ascii (void)
{
char *s = luaL_check_string(1);
long pos = (long)luaL_opt_number(2, 1) - 1;
luaL_arg_check(0<=pos && pos<strlen(s), 2, "out of range");
lua_pushnumber((unsigned char)s[pos]);
}
/*
** =======================================================
** PATTERN MATCHING
** =======================================================
*/
#define MAX_CAPT 9
struct Capture {
int level; /* total number of captures (finished or unfinished) */
struct {
char *init;
int len; /* -1 signals unfinished capture */
} capture[MAX_CAPT];
};
#define ESC '%'
#define SPECIALS "^$*?.([%-"
static void push_captures (struct Capture *cap)
{
int i;
for (i=0; i<cap->level; i++) {
int l = cap->capture[i].len;
char *buff = luaL_openspace(l+1);
if (l == -1) lua_error("unfinished capture");
strncpy(buff, cap->capture[i].init, l);
buff[l] = 0;
lua_pushstring(buff);
}
}
static int check_cap (int l, struct Capture *cap)
{
l -= '1';
if (!(0 <= l && l < cap->level && cap->capture[l].len != -1))
lua_error("invalid capture index");
return l;
}
static int capture_to_close (struct Capture *cap)
{
int level = cap->level;
for (level--; level>=0; level--)
if (cap->capture[level].len == -1) return level;
lua_error("invalid pattern capture");
return 0; /* to avoid warnings */
}
static char *bracket_end (char *p)
{
return (*p == 0) ? NULL : strchr((*p=='^') ? p+2 : p+1, ']');
}
static int matchclass (int c, int cl)
{
int res;
if (c == 0) return 0;
switch (tolower((unsigned char)cl)) {
case 'w' : res = isalnum((unsigned char)c); break;
case 'd' : res = isdigit((unsigned char)c); break;
case 's' : res = isspace((unsigned char)c); break;
case 'a' : res = isalpha((unsigned char)c); break;
case 'p' : res = ispunct((unsigned char)c); break;
case 'l' : res = islower((unsigned char)c); break;
case 'u' : res = isupper((unsigned char)c); break;
case 'c' : res = iscntrl((unsigned char)c); break;
default: return (cl == c);
}
return (islower((unsigned char)cl) ? res : !res);
}
int luaI_singlematch (int c, char *p, char **ep)
{
switch (*p) {
case '.':
*ep = p+1;
return (c != 0);
case '\0':
*ep = p;
return 0;
case ESC:
if (*(++p) == '\0')
luaL_verror("incorrect pattern (ends with `%c')", ESC);
*ep = p+1;
return matchclass(c, *p);
case '[': {
char *end = bracket_end(p+1);
int sig = *(p+1) == '^' ? (p++, 0) : 1;
if (end == NULL) lua_error("incorrect pattern (missing `]')");
*ep = end+1;
if (c == 0) return 0;
while (++p < end) {
if (*p == ESC) {
if (((p+1) < end) && matchclass(c, *++p)) return sig;
}
else if ((*(p+1) == '-') && (p+2 < end)) {
p+=2;
if (*(p-2) <= c && c <= *p) return sig;
}
else if (*p == c) return sig;
}
return !sig;
}
default:
*ep = p+1;
return (*p == c);
}
}
static char *matchbalance (char *s, int b, int e)
{
if (*s != b) return NULL;
else {
int cont = 1;
while (*(++s)) {
if (*s == e) {
if (--cont == 0) return s+1;
}
else if (*s == b) cont++;
}
}
return NULL; /* string ends out of balance */
}
static char *matchitem (char *s, char *p, struct Capture *cap, char **ep)
{
if (*p == ESC) {
p++;
if (isdigit((unsigned char)*p)) { /* capture */
int l = check_cap(*p, cap);
*ep = p+1;
if (strncmp(cap->capture[l].init, s, cap->capture[l].len) == 0)
return s+cap->capture[l].len;
else return NULL;
}
else if (*p == 'b') { /* balanced string */
p++;
if (*p == 0 || *(p+1) == 0)
lua_error("unbalanced pattern");
*ep = p+2;
return matchbalance(s, *p, *(p+1));
}
else p--; /* and go through */
}
return (luaI_singlematch(*s, p, ep) ? s+1 : NULL);
}
static char *match (char *s, char *p, struct Capture *cap)
{
init: /* using goto's to optimize tail recursion */
switch (*p) {
case '(': { /* start capture */
char *res;
if (cap->level >= MAX_CAPT) lua_error("too many captures");
cap->capture[cap->level].init = s;
cap->capture[cap->level].len = -1;
cap->level++;
if ((res=match(s, p+1, cap)) == NULL) /* match failed? */
cap->level--; /* undo capture */
return res;
}
case ')': { /* end capture */
int l = capture_to_close(cap);
char *res;
cap->capture[l].len = s - cap->capture[l].init; /* close capture */
if ((res = match(s, p+1, cap)) == NULL) /* match failed? */
cap->capture[l].len = -1; /* undo capture */
return res;
}
case '\0': case '$': /* (possibly) end of pattern */
if (*p == 0 || (*(p+1) == 0 && *s == 0))
return s;
/* else go through */
default: { /* it is a pattern item */
char *ep; /* get what is next */
char *s1 = matchitem(s, p, cap, &ep);
switch (*ep) {
case '*': { /* repetition */
char *res;
if (s1 && (res = match(s1, p, cap)))
return res;
p=ep+1; goto init; /* else return match(s, ep+1, cap); */
}
case '?': { /* optional */
char *res;
if (s1 && (res = match(s1, ep+1, cap)))
return res;
p=ep+1; goto init; /* else return match(s, ep+1, cap); */
}
case '-': { /* repetition */
char *res;
if ((res = match(s, ep+1, cap)) != 0)
return res;
else if (s1) {
s = s1;
goto init; /* return match(s1, p, cap); */
}
else
return NULL;
}
default:
if (s1) { s=s1; p=ep; goto init; } /* return match(s1, ep, cap); */
else return NULL;
}
}
}
}
static void str_find (void)
{
char *s = luaL_check_string(1);
char *p = luaL_check_string(2);
long init = (long)luaL_opt_number(3, 1) - 1;
luaL_arg_check(0 <= init && init <= strlen(s), 3, "out of range");
if (lua_getparam(4) != LUA_NOOBJECT ||
strpbrk(p, SPECIALS) == NULL) { /* no special caracters? */
char *s2 = strstr(s+init, p);
if (s2) {
lua_pushnumber(s2-s+1);
lua_pushnumber(s2-s+strlen(p));
}
}
else {
int anchor = (*p == '^') ? (p++, 1) : 0;
char *s1=s+init;
do {
struct Capture cap;
char *res;
cap.level = 0;
if ((res=match(s1, p, &cap)) != NULL) {
lua_pushnumber(s1-s+1); /* start */
lua_pushnumber(res-s); /* end */
push_captures(&cap);
return;
}
} while (*s1++ && !anchor);
}
}
static void add_s (lua_Object newp, struct Capture *cap)
{
if (lua_isstring(newp)) {
char *news = lua_getstring(newp);
while (*news) {
if (*news != ESC || !isdigit((unsigned char)*++news))
luaL_addchar(*news++);
else {
int l = check_cap(*news++, cap);
addnchar(cap->capture[l].init, cap->capture[l].len);
}
}
}
else if (lua_isfunction(newp)) {
lua_Object res;
int status;
int oldbuff;
lua_beginblock();
push_captures(cap);
/* function may use buffer, so save it and create a new one */
oldbuff = luaL_newbuffer(0);
status = lua_callfunction(newp);
/* restore old buffer */
luaL_oldbuffer(oldbuff);
if (status != 0) {
lua_endblock();
lua_error(NULL);
}
res = lua_getresult(1);
addstr(lua_isstring(res) ? lua_getstring(res) : "");
lua_endblock();
}
else luaL_arg_check(0, 3, "string or function expected");
}
static void str_gsub (void)
{
char *src = luaL_check_string(1);
char *p = luaL_check_string(2);
lua_Object newp = lua_getparam(3);
int max_s = (int)luaL_opt_number(4, strlen(src)+1);
int anchor = (*p == '^') ? (p++, 1) : 0;
int n = 0;
luaL_resetbuffer();
while (n < max_s) {
struct Capture cap;
char *e;
cap.level = 0;
e = match(src, p, &cap);
if (e) {
n++;
add_s(newp, &cap);
}
if (e && e>src) /* non empty match? */
src = e; /* skip it */
else if (*src)
luaL_addchar(*src++);
else break;
if (anchor) break;
}
addstr(src);
closeandpush();
lua_pushnumber(n); /* number of substitutions */
}
static void luaI_addquoted (char *s)
{
luaL_addchar('"');
for (; *s; s++) {
if (strchr("\"\\\n", *s))
luaL_addchar('\\');
luaL_addchar(*s);
}
luaL_addchar('"');
}
#define MAX_FORMAT 200
static void str_format (void)
{
int arg = 1;
char *strfrmt = luaL_check_string(arg);
luaL_resetbuffer();
while (*strfrmt) {
if (*strfrmt != '%')
luaL_addchar(*strfrmt++);
else if (*++strfrmt == '%')
luaL_addchar(*strfrmt++); /* %% */
else { /* format item */
char form[MAX_FORMAT]; /* store the format ('%...') */
struct Capture cap;
char *buff;
char *initf = strfrmt;
form[0] = '%';
cap.level = 0;
strfrmt = match(strfrmt, "%d?%$?[-+ #]*(%d*)%.?(%d*)", &cap);
if (cap.capture[0].len > 3 || cap.capture[1].len > 3) /* < 1000? */
lua_error("invalid format (width or precision too long)");
if (isdigit((unsigned char)initf[0]) && initf[1] == '$') {
arg = initf[0] - '0';
initf += 2; /* skip the 'n$' */
}
arg++;
strncpy(form+1, initf, strfrmt-initf+1); /* +1 to include convertion */
form[strfrmt-initf+2] = 0;
buff = luaL_openspace(1000); /* to store the formatted value */
switch (*strfrmt++) {
case 'q':
luaI_addquoted(luaL_check_string(arg));
continue;
case 's': {
char *s = luaL_check_string(arg);
buff = luaL_openspace(strlen(s));
sprintf(buff, form, s);
break;
}
case 'c': case 'd': case 'i': case 'o':
case 'u': case 'x': case 'X':
sprintf(buff, form, (int)luaL_check_number(arg));
break;
case 'e': case 'E': case 'f': case 'g': case 'G':
sprintf(buff, form, luaL_check_number(arg));
break;
default: /* also treat cases 'pnLlh' */
lua_error("invalid option in `format'");
}
luaL_addsize(strlen(buff));
}
}
closeandpush(); /* push the result */
}
static struct luaL_reg strlib[] = {
{"strlen", str_len},
{"strsub", str_sub},
{"strlower", str_lower},
{"strupper", str_upper},
{"strrep", str_rep},
{"ascii", str_ascii},
{"format", str_format},
{"strfind", str_find},
{"gsub", str_gsub}
};
/*
** Open string library
*/
void strlib_open (void)
{
luaL_openlib(strlib, (sizeof(strlib)/sizeof(strlib[0])));
}

216
ltable.c
View File

@@ -1,216 +0,0 @@
/*
** $Id: ltable.c,v 1.10 1998/01/09 14:44:55 roberto Exp roberto $
** Lua tables (hash)
** See Copyright Notice in lua.h
*/
#include <stdlib.h>
#include "lauxlib.h"
#include "lmem.h"
#include "lobject.h"
#include "lstate.h"
#include "ltable.h"
#include "lua.h"
#define gcsize(n) (1+(n/16))
#define nuse(t) ((t)->nuse)
#define nodevector(t) ((t)->node)
#define REHASH_LIMIT 0.70 /* avoid more than this % full */
#define TagDefault LUA_T_ARRAY;
static long int hashindex (TObject *ref)
{
long int h;
switch (ttype(ref)) {
case LUA_T_NUMBER:
h = (long int)nvalue(ref);
break;
case LUA_T_STRING: case LUA_T_USERDATA:
h = (IntPoint)tsvalue(ref);
break;
case LUA_T_ARRAY:
h = (IntPoint)avalue(ref);
break;
case LUA_T_PROTO:
h = (IntPoint)tfvalue(ref);
break;
case LUA_T_CPROTO:
h = (IntPoint)fvalue(ref);
break;
case LUA_T_CLOSURE:
h = (IntPoint)clvalue(ref);
break;
default:
lua_error("unexpected type to index table");
h = 0; /* to avoid warnings */
}
return (h >= 0 ? h : -(h+1));
}
static int present (Hash *t, TObject *key)
{
int tsize = nhash(t);
long int h = hashindex(key);
int h1 = h%tsize;
TObject *rf = ref(node(t, h1));
if (ttype(rf) != LUA_T_NIL && !luaO_equalObj(key, rf)) {
int h2 = h%(tsize-2) + 1;
do {
h1 += h2;
if (h1 >= tsize) h1 -= tsize;
rf = ref(node(t, h1));
} while (ttype(rf) != LUA_T_NIL && !luaO_equalObj(key, rf));
}
return h1;
}
/*
** Alloc a vector node
*/
static Node *hashnodecreate (int nhash)
{
Node *v = luaM_newvector(nhash, Node);
int i;
for (i=0; i<nhash; i++)
ttype(ref(&v[i])) = LUA_T_NIL;
return v;
}
/*
** Delete a hash
*/
static void hashdelete (Hash *t)
{
luaM_free(nodevector(t));
luaM_free(t);
}
void luaH_free (Hash *frees)
{
while (frees) {
Hash *next = (Hash *)frees->head.next;
L->nblocks -= gcsize(frees->nhash);
hashdelete(frees);
frees = next;
}
}
Hash *luaH_new (int nhash)
{
Hash *t = luaM_new(Hash);
nhash = luaO_redimension((int)((float)nhash/REHASH_LIMIT));
nodevector(t) = hashnodecreate(nhash);
nhash(t) = nhash;
nuse(t) = 0;
t->htag = TagDefault;
luaO_insertlist(&(L->roottable), (GCnode *)t);
L->nblocks += gcsize(nhash);
return t;
}
/*
** Rehash:
** Check if table has deleted slots. It it has, it does not need to
** grow, since rehash will reuse them.
*/
static int emptyslots (Hash *t)
{
int i;
for (i=nhash(t)-1; i>=0; i--) {
Node *n = node(t, i);
if (ttype(ref(n)) != LUA_T_NIL && ttype(val(n)) == LUA_T_NIL)
return 1;
}
return 0;
}
static void rehash (Hash *t)
{
int nold = nhash(t);
Node *vold = nodevector(t);
int i;
if (!emptyslots(t))
nhash(t) = luaO_redimension(nhash(t));
nodevector(t) = hashnodecreate(nhash(t));
for (i=0; i<nold; i++) {
Node *n = vold+i;
if (ttype(ref(n)) != LUA_T_NIL && ttype(val(n)) != LUA_T_NIL)
*node(t, present(t, ref(n))) = *n; /* copy old node to luaM_new hash */
}
L->nblocks += gcsize(t->nhash)-gcsize(nold);
luaM_free(vold);
}
/*
** If the hash node is present, return its pointer, otherwise return
** null.
*/
TObject *luaH_get (Hash *t, TObject *ref)
{
int h = present(t, ref);
if (ttype(ref(node(t, h))) != LUA_T_NIL) return val(node(t, h));
else return NULL;
}
/*
** If the hash node is present, return its pointer, otherwise create a luaM_new
** node for the given reference and also return its pointer.
*/
TObject *luaH_set (Hash *t, TObject *ref)
{
Node *n = node(t, present(t, ref));
if (ttype(ref(n)) == LUA_T_NIL) {
nuse(t)++;
if ((float)nuse(t) > (float)nhash(t)*REHASH_LIMIT) {
rehash(t);
n = node(t, present(t, ref));
}
*ref(n) = *ref;
ttype(val(n)) = LUA_T_NIL;
}
return (val(n));
}
static Node *hashnext (Hash *t, int i)
{
Node *n;
int tsize = nhash(t);
if (i >= tsize)
return NULL;
n = node(t, i);
while (ttype(ref(n)) == LUA_T_NIL || ttype(val(n)) == LUA_T_NIL) {
if (++i >= tsize)
return NULL;
n = node(t, i);
}
return node(t, i);
}
Node *luaH_next (TObject *o, TObject *r)
{
Hash *t = avalue(o);
if (ttype(r) == LUA_T_NIL)
return hashnext(t, 0);
else {
int i = present(t, r);
Node *n = node(t, i);
luaL_arg_check(ttype(ref(n))!=LUA_T_NIL && ttype(val(n))!=LUA_T_NIL,
2, "key not found");
return hashnext(t, i+1);
}
}

View File

@@ -1,24 +0,0 @@
/*
** $Id: ltable.h,v 1.4 1997/11/19 17:29:23 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 ref(n) (&(n)->ref)
#define val(n) (&(n)->val)
#define nhash(t) ((t)->nhash)
Hash *luaH_new (int nhash);
void luaH_free (Hash *frees);
TObject *luaH_get (Hash *t, TObject *ref);
TObject *luaH_set (Hash *t, TObject *ref);
Node *luaH_next (TObject *o, TObject *r);
#endif

263
ltm.c
View File

@@ -1,263 +0,0 @@
/*
** $Id: ltm.c,v 1.12 1997/12/15 16:17:20 roberto Exp roberto $
** Tag methods
** See Copyright Notice in lua.h
*/
#include <stdio.h>
#include <string.h>
#include "lauxlib.h"
#include "lmem.h"
#include "lobject.h"
#include "lstate.h"
#include "ltm.h"
char *luaT_eventname[] = { /* ORDER IM */
"gettable", "settable", "index", "getglobal", "setglobal", "add",
"sub", "mul", "div", "pow", "unm", "lt", "le", "gt", "ge",
"concat", "gc", "function", NULL
};
static int luaI_checkevent (char *name, char *list[])
{
int e = luaO_findstring(name, list);
if (e < 0)
luaL_verror("`%.50s' is not a valid event name", name);
return e;
}
/* events in LUA_T_NIL are all allowed, since this is used as a
* 'placeholder' for "default" fallbacks
*/
static char validevents[NUM_TAGS][IM_N] = { /* ORDER LUA_T, ORDER IM */
{1, 1, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1}, /* LUA_T_USERDATA */
{1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1}, /* LUA_T_NUMBER */
{1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1}, /* LUA_T_STRING */
{0, 0, 1, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1}, /* LUA_T_ARRAY */
{1, 1, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0}, /* LUA_T_PROTO */
{1, 1, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0}, /* LUA_T_CPROTO */
{1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1} /* LUA_T_NIL */
};
static int validevent (int t, int e)
{ /* ORDER LUA_T */
return (t < LUA_T_NIL) ? 1 : validevents[-t][e];
}
static void init_entry (int tag)
{
int i;
for (i=0; i<IM_N; i++)
ttype(luaT_getim(tag, i)) = LUA_T_NIL;
}
void luaT_init (void)
{
int t;
L->IMtable_size = NUM_TAGS*2;
L->last_tag = -(NUM_TAGS-1);
L->IMtable = luaM_newvector(L->IMtable_size, struct IM);
for (t=L->last_tag; t<=0; t++)
init_entry(t);
}
int lua_newtag (void)
{
--L->last_tag;
if ((-L->last_tag) >= L->IMtable_size)
L->IMtable_size = luaM_growvector(&L->IMtable, L->IMtable_size,
struct IM, memEM, MAX_INT);
init_entry(L->last_tag);
return L->last_tag;
}
static void checktag (int tag)
{
if (!(L->last_tag <= tag && tag <= 0))
luaL_verror("%d is not a valid tag", tag);
}
void luaT_realtag (int tag)
{
if (!(L->last_tag <= tag && tag < LUA_T_NIL))
luaL_verror("tag %d is not result of `newtag'", tag);
}
int lua_copytagmethods (int tagto, int tagfrom)
{
int e;
checktag(tagto);
checktag(tagfrom);
for (e=0; e<IM_N; e++) {
if (validevent(tagto, e))
*luaT_getim(tagto, e) = *luaT_getim(tagfrom, e);
}
return tagto;
}
int luaT_efectivetag (TObject *o)
{
int t;
switch (t = ttype(o)) {
case LUA_T_ARRAY:
return o->value.a->htag;
case LUA_T_USERDATA: {
int tag = o->value.ts->u.d.tag;
return (tag >= 0) ? LUA_T_USERDATA : tag;
}
case LUA_T_CLOSURE:
return o->value.cl->consts[0].ttype;
#ifdef DEBUG
case LUA_T_PMARK: case LUA_T_CMARK:
case LUA_T_CLMARK: case LUA_T_LINE:
lua_error("internal error");
#endif
default:
return t;
}
}
TObject *luaT_gettagmethod (int t, char *event)
{
int e = luaI_checkevent(event, luaT_eventname);
checktag(t);
if (validevent(t, e))
return luaT_getim(t,e);
else
return &luaO_nilobject;
}
void luaT_settagmethod (int t, char *event, TObject *func)
{
TObject temp = *func;
int e = luaI_checkevent(event, luaT_eventname);
checktag(t);
if (!validevent(t, e))
luaL_verror("settagmethod: cannot change internal method `%.20s' for tag %d",
luaT_eventname[e], t);
*func = *luaT_getim(t,e);
*luaT_getim(t, e) = temp;
}
char *luaT_travtagmethods (int (*fn)(TObject *))
{
int e;
if (fn(&L->errorim))
return "error";
for (e=IM_GETTABLE; e<=IM_FUNCTION; e++) { /* ORDER IM */
int t;
for (t=0; t>=L->last_tag; t--)
if (fn(luaT_getim(t,e)))
return luaT_eventname[e];
}
return NULL;
}
/*
* ===================================================================
* compatibility with old fallback system
*/
#ifdef LUA_COMPAT2_5
#include "lapi.h"
static void errorFB (void)
{
lua_Object o = lua_getparam(1);
if (lua_isstring(o))
fprintf(stderr, "lua: %s\n", lua_getstring(o));
else
fprintf(stderr, "lua: unknown error\n");
}
static void nilFB (void) { }
static void typeFB (void)
{
lua_error("unexpected type");
}
static void fillvalids (IMS e, TObject *func)
{
int t;
for (t=LUA_T_NIL; t<=LUA_T_USERDATA; t++)
if (validevent(t, e))
*luaT_getim(t, e) = *func;
}
void luaT_setfallback (void)
{
static char *oldnames [] = {"error", "getglobal", "arith", "order", NULL};
TObject oldfunc;
lua_CFunction replace;
char *name = luaL_check_string(1);
lua_Object func = lua_getparam(2);
luaL_arg_check(lua_isfunction(func), 2, "function expected");
switch (luaO_findstring(name, oldnames)) {
case 0: /* old error fallback */
oldfunc = L->errorim;
L->errorim = *luaA_Address(func);
replace = errorFB;
break;
case 1: /* old getglobal fallback */
oldfunc = *luaT_getim(LUA_T_NIL, IM_GETGLOBAL);
*luaT_getim(LUA_T_NIL, IM_GETGLOBAL) = *luaA_Address(func);
replace = nilFB;
break;
case 2: { /* old arith fallback */
int i;
oldfunc = *luaT_getim(LUA_T_NUMBER, IM_POW);
for (i=IM_ADD; i<=IM_UNM; i++) /* ORDER IM */
fillvalids(i, luaA_Address(func));
replace = typeFB;
break;
}
case 3: { /* old order fallback */
int i;
oldfunc = *luaT_getim(LUA_T_NIL, IM_LT);
for (i=IM_LT; i<=IM_GE; i++) /* ORDER IM */
fillvalids(i, luaA_Address(func));
replace = typeFB;
break;
}
default: {
int e;
if ((e = luaO_findstring(name, luaT_eventname)) >= 0) {
oldfunc = *luaT_getim(LUA_T_NIL, e);
fillvalids(e, luaA_Address(func));
replace = (e == IM_GC || e == IM_INDEX) ? nilFB : typeFB;
}
else {
luaL_verror("`%.50s' is not a valid fallback name", name);
replace = NULL; /* to avoid warnings */
}
}
}
if (oldfunc.ttype != LUA_T_NIL)
luaA_pushobject(&oldfunc);
else
lua_pushcfunction(replace);
}
#endif

62
ltm.h
View File

@@ -1,62 +0,0 @@
/*
** $Id: ltm.h,v 1.3 1997/11/19 17:29:23 roberto Exp roberto $
** Tag methods
** See Copyright Notice in lua.h
*/
#ifndef ltm_h
#define ltm_h
#include "lobject.h"
#include "lstate.h"
/*
* WARNING: if you change the order of this enumeration,
* grep "ORDER IM"
*/
typedef enum {
IM_GETTABLE = 0,
IM_SETTABLE,
IM_INDEX,
IM_GETGLOBAL,
IM_SETGLOBAL,
IM_ADD,
IM_SUB,
IM_MUL,
IM_DIV,
IM_POW,
IM_UNM,
IM_LT,
IM_LE,
IM_GT,
IM_GE,
IM_CONCAT,
IM_GC,
IM_FUNCTION
} IMS;
#define IM_N 18
struct IM {
TObject int_method[IM_N];
};
#define luaT_getim(tag,event) (&L->IMtable[-(tag)].int_method[event])
#define luaT_getimbyObj(o,e) (luaT_getim(luaT_efectivetag(o),(e)))
extern char *luaT_eventname[];
void luaT_init (void);
void luaT_realtag (int tag);
int luaT_efectivetag (TObject *o);
void luaT_settagmethod (int t, char *event, TObject *func);
TObject *luaT_gettagmethod (int t, char *event);
char *luaT_travtagmethods (int (*fn)(TObject *));
void luaT_setfallback (void); /* only if LUA_COMPAT2_5 */
#endif

173
lua.c
View File

@@ -1,159 +1,54 @@
/*
** $Id: lua.c,v 1.11 1997/12/22 18:05:23 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 <stdio.h>
#include <string.h>
#include "lua.h"
#include "luadebug.h"
#include "lualib.h"
#ifndef OLD_ANSI
#include <locale.h>
#else
#define setlocale(a,b) 0
#endif
#ifdef _POSIX_SOURCE
#include <unistd.h>
#else
#define isatty(x) (x==0) /* assume stdin is a tty */
#endif
static void print_message (void)
void test (void)
{
fprintf(stderr,
"Lua: command line options:\n"
" -v print version information\n"
" -d turn debug on\n"
" -e stat dostring `stat'\n"
" -q interactive mode without prompt\n"
" -i interactive mode with prompt\n"
" - executes stdin as a file\n"
" a=b sets global `a' with string `b'\n"
" name dofile `name'\n\n");
lua_pushobject(lua_getparam(1));
lua_call ("c", 1);
}
static void assign (char *arg)
static void callfunc (void)
{
if (strlen(arg) >= 500)
fprintf(stderr, "lua: shell argument too long");
else {
char buffer[500];
char *eq = strchr(arg, '=');
lua_pushstring(eq+1);
strncpy(buffer, arg, eq-arg);
buffer[eq-arg] = 0;
lua_setglobal(buffer);
}
lua_Object obj = lua_getparam (1);
if (lua_isstring(obj)) lua_call(lua_getstring(obj),0);
}
#define BUF_SIZE 512
static void manual_input (int prompt)
static void execstr (void)
{
int cont = 1;
while (cont) {
char buffer[BUF_SIZE];
int i = 0;
lua_beginblock();
if (prompt)
printf("%s", lua_getstring(lua_getglobal("_PROMPT")));
for(;;) {
int c = getchar();
if (c == EOF) {
cont = 0;
break;
}
else if (c == '\n') {
if (i>0 && buffer[i-1] == '\\')
buffer[i-1] = '\n';
else break;
}
else if (i >= BUF_SIZE-1) {
fprintf(stderr, "lua: argument line too long\n");
break;
}
else buffer[i++] = c;
}
buffer[i] = 0;
lua_dostring(buffer);
lua_endblock();
}
printf("\n");
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);
}
}
int main (int argc, char *argv[])
{
int i;
setlocale(LC_ALL, "");
lua_iolibopen();
lua_strlibopen();
lua_mathlibopen();
lua_pushstring("> "); lua_setglobal("_PROMPT");
if (argc < 2) { /* no arguments? */
if (isatty(0)) {
printf("%s %s\n", LUA_VERSION, LUA_COPYRIGHT);
manual_input(1);
}
else
lua_dofile(NULL); /* executes stdin as a file */
}
else for (i=1; i<argc; i++) {
if (argv[i][0] == '-') { /* option? */
switch (argv[i][1]) {
case 0:
lua_dofile(NULL); /* executes stdin as a file */
break;
case 'i':
manual_input(1);
break;
case 'q':
manual_input(0);
break;
case 'd':
lua_debug = 1;
break;
case 'v':
printf("%s %s\n(written by %s)\n\n",
LUA_VERSION, LUA_COPYRIGHT, LUA_AUTHORS);
break;
case 'e':
i++;
if (lua_dostring(argv[i]) != 0) {
fprintf(stderr, "lua: error running argument `%s'\n", argv[i]);
return 1;
}
break;
default:
print_message();
exit(1);
}
}
else if (strchr(argv[i], '='))
assign(argv[i]);
else {
int result = lua_dofile(argv[i]);
if (result) {
if (result == 2) {
fprintf(stderr, "lua: cannot execute file ");
perror(argv[i]);
}
exit(1);
}
}
}
#ifdef DEBUG
lua_close();
#endif
return 0;
}

190
lua.h
View File

@@ -1,178 +1,54 @@
/*
** $Id: lua.h,v 1.13 1998/01/02 17:46:32 roberto Exp roberto $
** Lua - An Extensible Extension Language
** TeCGraf: Grupo de Tecnologia em Computacao Grafica, PUC-Rio, Brazil
** e-mail: lua@tecgraf.puc-rio.br
** www: http://www.tecgraf.puc-rio.br/lua/
** LUA - Linguagem para Usuarios de Aplicacao
** Grupo de Tecnologia em Computacao Grafica
** TeCGraf - PUC-Rio
** 19 May 93
*/
/*********************************************************************
* Copyright (c) 1994-1998 TeCGraf, PUC-Rio.
* Written by Waldemar Celes Filho, Roberto Ierusalimschy and
* Luiz Henrique de Figueiredo.
* All rights reserved.
*
* Permission is hereby granted, without written agreement and with­
* out license or royalty fees, to use, copy, modify, and distribute
* this software and its documentation for any purpose, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall ap­
* pear in all copies or substantial portions of this software.
*
* The name "Lua" cannot be used for any modified form of this soft­
* ware that does not originate from the authors. Nevertheless, the
* name "Lua" may and should be used to designate the language im­
* plemented and described in this package, even if embedded in any
* other system, as long as its syntax and semantics remain un­
* changed.
*
* The authors specifically disclaim any warranties, including, but
* not limited to, the implied warranties of merchantability and
* fitness for a particular purpose. The software provided hereunder
* is on an "as is" basis, and the authors have no obligation to
* provide maintenance, support, updates, enhancements, or modifica­
* tions. In no event shall TeCGraf, PUC-Rio, or the authors be li­
* able to any party for direct, indirect, special, incidental, or
* consequential damages arising out of the use of this software and
* its documentation.
*********************************************************************/
#ifndef lua_h
#define lua_h
#define LUA_VERSION "Lua 3.1 (alpha)"
#define LUA_COPYRIGHT "Copyright (C) 1994-1998 TeCGraf"
#define LUA_AUTHORS "W. Celes, R. Ierusalimschy & L. H. de Figueiredo"
#define LUA_NOOBJECT 0
#define LUA_ANYTAG (-1)
typedef void (*lua_CFunction) (void);
typedef unsigned int lua_Object;
typedef struct Object *lua_Object;
#define lua_register(n,f) (lua_pushcfunction(f), lua_storeglobal(n))
void lua_open (void);
void lua_close (void);
lua_Object lua_settagmethod (int tag, char *event); /* In: new method */
lua_Object lua_gettagmethod (int tag, char *event);
lua_Object lua_seterrormethod (void); /* In: new method */
int lua_newtag (void);
int lua_copytagmethods (int tagto, int tagfrom);
void lua_settag (int tag); /* In: object */
void lua_errorfunction (void (*fn) (char *s));
void lua_error (char *s);
int lua_dofile (char *filename); /* Out: returns */
int lua_dostring (char *string); /* Out: returns */
int lua_callfunction (lua_Object f);
/* In: parameters; Out: returns */
int lua_dofile (char *filename);
int lua_dostring (char *string);
int lua_call (char *functionname, int nparam);
void lua_beginblock (void);
void lua_endblock (void);
lua_Object lua_lua2C (int number);
#define lua_getparam(_) lua_lua2C(_)
#define lua_getresult(_) lua_lua2C(_)
int lua_isnil (lua_Object object);
int lua_istable (lua_Object object);
int lua_isuserdata (lua_Object object);
int lua_iscfunction (lua_Object object);
int lua_isnumber (lua_Object object);
int lua_isstring (lua_Object object);
int lua_isfunction (lua_Object object);
double lua_getnumber (lua_Object object);
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);
void lua_pushnil (void);
void lua_pushnumber (double n);
void lua_pushstring (char *s);
void lua_pushCclosure (lua_CFunction fn, int n);
void lua_pushusertag (void *u, int tag);
void lua_pushobject (lua_Object object);
lua_Object lua_pop (void);
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_rawgetglobal (char *name);
void lua_setglobal (char *name); /* In: value */
void lua_rawsetglobal (char *name); /* In: value */
void lua_settable (void); /* In: table, index, value */
void lua_rawsettable (void); /* In: table, index, value */
lua_Object lua_gettable (void); /* In: table, index */
lua_Object lua_rawgettable (void); /* In: table, index */
lua_Object lua_pop (void);
int lua_tag (lua_Object object);
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_ref (int lock); /* In: value */
lua_Object lua_getref (int ref);
void lua_unref (int ref);
lua_Object lua_createtable (void);
long lua_collectgarbage (long limit);
/* =============================================================== */
/* some useful macros */
#define lua_call(name) lua_callfunction(lua_getglobal(name))
#define lua_pushref(ref) lua_pushobject(lua_getref(ref))
#define lua_refobject(o,l) (lua_pushobject(o), lua_ref(l))
#define lua_register(n,f) (lua_pushcfunction(f), lua_setglobal(n))
#define lua_pushuserdata(u) lua_pushusertag(u, 0)
#define lua_pushcfunction(f) lua_pushCclosure(f, 0)
#define lua_clonetag(t) lua_copytagmethods(lua_newtag(), (t))
/* ==========================================================================
** for compatibility with old versions. Avoid using these macros/functions
** If your program does need any of these, define LUA_COMPAT2_5
*/
#ifdef LUA_COMPAT2_5
lua_Object lua_setfallback (char *event, lua_CFunction fallback);
#define lua_storeglobal lua_setglobal
#define lua_type lua_tag
#define lua_lockobject(o) lua_refobject(o,1)
#define lua_lock() lua_ref(1)
#define lua_getlocked lua_getref
#define lua_pushlocked lua_pushref
#define lua_unlock lua_unref
#define lua_pushliteral(o) lua_pushstring(o)
#define lua_getindexed(o,n) (lua_pushobject(o), lua_pushnumber(n), lua_gettable())
#define lua_getfield(o,f) (lua_pushobject(o), lua_pushstring(f), lua_gettable())
#define lua_copystring(o) (strdup(lua_getstring(o)))
#define lua_getsubscript lua_gettable
#define lua_storesubscript lua_settable
#endif
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

939
lua.stx
View File

@@ -1,939 +0,0 @@
%{
/*
** $Id: lua.stx,v 1.32 1998/01/12 13:00:51 roberto Exp roberto $
** Syntax analizer and code generator
** See Copyright Notice in lua.h
*/
#include <stdlib.h>
#include <string.h>
#include "lauxlib.h"
#include "ldo.h"
#include "lfunc.h"
#include "llex.h"
#include "lmem.h"
#include "lopcodes.h"
#include "lparser.h"
#include "lstate.h"
#include "lstring.h"
#include "lua.h"
#include "luadebug.h"
#include "lzio.h"
int luaY_parse (void);
#define MES_LIM(x) "(limit=" x ")"
/* size of a "normal" jump instruction: OpCode + 1 byte */
#define JMPSIZE 2
/* maximum number of local variables */
#define MAXLOCALS 32
#define SMAXLOCALS "32"
#define MINGLOBAL (MAXLOCALS+1)
/* maximum number of variables in a multiple assignment */
#define MAXVAR 32
#define SMAXVAR "32"
/* maximum number of nested functions */
#define MAXSTATES 6
#define SMAXSTATES "6"
/* maximum number of upvalues */
#define MAXUPVALUES 16
#define SMAXUPVALUES "16"
/*
** Variable descriptor:
** if 0<n<MINGLOBAL, represents local variable indexed by (n-1);
** if MINGLOBAL<=n, represents global variable at position (n-MINGLOBAL);
** if n<0, indexed variable with index (-n)-1 (table on top of stack);
** if n==0, an indexed variable (table and index on top of stack)
** Must be long to store negative Word values.
*/
typedef long vardesc;
#define isglobal(v) (MINGLOBAL<=(v))
#define globalindex(v) ((v)-MINGLOBAL)
#define islocal(v) (0<(v) && (v)<MINGLOBAL)
#define localindex(v) ((v)-1)
#define isdot(v) (v<0)
#define dotindex(v) ((-(v))-1)
/* state needed to generate code for a given function */
typedef struct FuncState {
TProtoFunc *f; /* current function header */
int pc; /* next position to code */
TaggedString *localvar[MAXLOCALS]; /* store local variable names */
int stacksize; /* number of values on activation register */
int maxstacksize; /* maximum number of values on activation register */
int nlocalvar; /* number of active local variables */
int nupvalues; /* number of upvalues */
int nvars; /* number of entries in f->locvars */
int maxcode; /* size of f->code */
int maxvars; /* size of f->locvars (-1 if no debug information) */
int maxconsts; /* size of f->consts */
vardesc varbuffer[MAXVAR]; /* variables in an assignment list */
vardesc upvalues[MAXUPVALUES]; /* upvalues */
} FuncState;
#define YYPURE 1
void luaY_syntaxerror (char *s, char *token)
{
if (token[0] == 0)
token = "<eof>";
luaL_verror("%.100s;\n last token read: \"%.50s\" at line %d in file %.50s",
s, token, L->lexstate->linenumber, L->mainState->f->fileName->str);
}
void luaY_error (char *s)
{
luaY_syntaxerror(s, luaX_lasttoken());
}
static void check_pc (int n)
{
FuncState *fs = L->currState;
if (fs->pc+n > fs->maxcode)
fs->maxcode = luaM_growvector(&fs->f->code, fs->maxcode,
Byte, codeEM, MAX_INT);
}
static void code_byte (Byte c)
{
check_pc(1);
L->currState->f->code[L->currState->pc++] = c;
}
static void deltastack (int delta)
{
FuncState *fs = L->currState;
fs->stacksize += delta;
if (fs->stacksize > fs->maxstacksize) {
if (fs->stacksize > 255)
luaY_error("function/expression too complex");
fs->maxstacksize = fs->stacksize;
}
}
static int code_oparg_at (int pc, OpCode op, int builtin, int arg, int delta)
{
Byte *code = L->currState->f->code;
deltastack(delta);
if (arg < builtin) {
code[pc] = op+1+arg;
return 1;
}
else if (arg <= 255) {
code[pc] = op;
code[pc+1] = arg;
return 2;
}
else if (arg <= MAX_WORD) {
code[pc] = op+1+builtin;
code[pc+1] = arg&0xFF;
code[pc+2] = arg>>8;
return 3;
}
else luaY_error("code too long " MES_LIM("64K"));
return 0; /* to avoid warnings */
}
static int fix_opcode (int pc, OpCode op, int builtin, int arg)
{
FuncState *fs = L->currState;
if (arg < builtin) { /* close space */
luaO_memdown(fs->f->code+pc+1, fs->f->code+pc+2, fs->pc-(pc+2));
fs->pc--;
}
else if (arg > 255) { /* open space */
check_pc(1);
luaO_memup(fs->f->code+pc+1, fs->f->code+pc, fs->pc-pc);
fs->pc++;
}
return code_oparg_at(pc, op, builtin, arg, 0) - 2;
}
static void code_oparg (OpCode op, int builtin, int arg, int delta)
{
check_pc(3); /* maximum code size */
L->currState->pc += code_oparg_at(L->currState->pc, op, builtin, arg, delta);
}
static void code_opcode (OpCode op, int delta)
{
deltastack(delta);
code_byte(op);
}
static void code_pop (OpCode op)
{
code_opcode(op, -1);
}
/* binary operations get 2 arguments and leave one, so they pop one */
#define code_binop(op) code_pop(op)
static void code_neutralop (OpCode op)
{
code_opcode(op, 0);
}
/* unary operations get 1 argument and leave one, so they are neutral */
#define code_unop(op) code_neutralop(op)
static void code_constant (int c)
{
code_oparg(PUSHCONSTANT, 8, c, 1);
}
static int next_constant (FuncState *cs)
{
TProtoFunc *f = cs->f;
if (f->nconsts >= cs->maxconsts) {
cs->maxconsts = luaM_growvector(&f->consts, cs->maxconsts, TObject,
constantEM, MAX_WORD);
}
return f->nconsts++;
}
static int string_constant (TaggedString *s, FuncState *cs)
{
TProtoFunc *f = cs->f;
int c = s->constindex;
if (!(c < f->nconsts &&
ttype(&f->consts[c]) == LUA_T_STRING && tsvalue(&f->consts[c]) == s)) {
c = next_constant(cs);
ttype(&f->consts[c]) = LUA_T_STRING;
tsvalue(&f->consts[c]) = s;
s->constindex = c; /* hint for next time */
}
return c;
}
static void code_string (TaggedString *s)
{
code_constant(string_constant(s, L->currState));
}
#define LIM 20
static int real_constant (real r)
{
/* check whether 'r' has appeared within the last LIM entries */
TObject *cnt = L->currState->f->consts;
int c = L->currState->f->nconsts;
int lim = c < LIM ? 0 : c-LIM;
while (--c >= lim) {
if (ttype(&cnt[c]) == LUA_T_NUMBER && nvalue(&cnt[c]) == r)
return c;
}
/* not found; create a luaM_new entry */
c = next_constant(L->currState);
cnt = L->currState->f->consts; /* 'next_constant' may reallocate this vector */
ttype(&cnt[c]) = LUA_T_NUMBER;
nvalue(&cnt[c]) = r;
return c;
}
static void code_number (real f)
{
int i;
if (f >= 0 && f <= (real)MAX_WORD && (real)(i=(int)f) == f)
code_oparg(PUSHNUMBER, 3, i, 1); /* f has an (short) integer value */
else
code_constant(real_constant(f));
}
static void flush_record (int n)
{
if (n > 0)
code_oparg(SETMAP, 1, n-1, -2*n);
}
static void flush_list (int m, int n)
{
if (n == 0) return;
code_oparg(SETLIST, 1, m, -n);
code_byte(n);
}
static void luaI_registerlocalvar (TaggedString *varname, int line)
{
FuncState *fs = L->currState;
if (fs->maxvars != -1) { /* debug information? */
if (fs->nvars >= fs->maxvars)
fs->maxvars = luaM_growvector(&fs->f->locvars, fs->maxvars,
LocVar, "", MAX_WORD);
fs->f->locvars[fs->nvars].varname = varname;
fs->f->locvars[fs->nvars].line = line;
fs->nvars++;
}
}
static void luaI_unregisterlocalvar (int line)
{
luaI_registerlocalvar(NULL, line);
}
static void store_localvar (TaggedString *name, int n)
{
if (L->currState->nlocalvar+n < MAXLOCALS)
L->currState->localvar[L->currState->nlocalvar+n] = name;
else
luaY_error("too many local variables " MES_LIM(SMAXLOCALS));
luaI_registerlocalvar(name, L->lexstate->linenumber);
}
static void add_localvar (TaggedString *name)
{
store_localvar(name, 0);
L->currState->nlocalvar++;
}
/*
** dotted variables <a.x> must be stored like regular indexed vars <a["x"]>
*/
static vardesc var2store (vardesc var)
{
if (isdot(var)) {
code_constant(dotindex(var));
var = 0;
}
return var;
}
static void add_varbuffer (vardesc var, int n)
{
if (n >= MAXVAR)
luaY_error("variable buffer overflow " MES_LIM(SMAXVAR));
L->currState->varbuffer[n] = var2store(var);
}
static int aux_localname (TaggedString *n, FuncState *st)
{
int i;
for (i=st->nlocalvar-1; i >= 0; i--)
if (n == st->localvar[i]) return i; /* local var index */
return -1; /* not found */
}
static vardesc singlevar (TaggedString *n, FuncState *st)
{
int i = aux_localname(n, st);
if (i == -1) { /* check shadowing */
int l;
for (l=1; l<=(st-L->mainState); l++)
if (aux_localname(n, st-l) >= 0)
luaY_syntaxerror("cannot access a variable in outer scope", n->str);
return string_constant(n, st)+MINGLOBAL; /* global value */
}
else return i+1; /* local value */
}
static int indexupvalue (TaggedString *n)
{
vardesc v = singlevar(n, L->currState-1);
int i;
for (i=0; i<L->currState->nupvalues; i++) {
if (L->currState->upvalues[i] == v)
return i;
}
/* new one */
if (++(L->currState->nupvalues) > MAXUPVALUES)
luaY_error("too many upvalues in a single function " MES_LIM(SMAXUPVALUES));
L->currState->upvalues[i] = v; /* i = L->currState->nupvalues - 1 */
return i;
}
static void pushupvalue (TaggedString *n)
{
int i;
if (L->currState == L->mainState)
luaY_error("cannot access upvalue in main");
if (aux_localname(n, L->currState) >= 0)
luaY_syntaxerror("cannot access an upvalue in current scope", n->str);
i = indexupvalue(n);
code_oparg(PUSHUPVALUE, 2, i, 1);
}
void luaY_codedebugline (int line)
{
if (lua_debug && line != L->lexstate->lastline) {
code_oparg(SETLINE, 0, line, 0);
L->lexstate->lastline = line;
}
}
static void adjuststack (int n)
{
if (n > 0)
code_oparg(POP, 2, n-1, -n);
else if (n < 0)
code_oparg(PUSHNIL, 1, (-n)-1, -n);
}
static long adjust_functioncall (long exp, int nresults)
{
if (exp <= 0)
return -exp; /* exp is -list length */
else {
int temp = L->currState->f->code[exp];
int nparams = L->currState->f->code[exp-1];
exp += fix_opcode(exp-2, CALLFUNC, 2, nresults);
L->currState->f->code[exp] = nparams;
if (nresults != MULT_RET)
deltastack(nresults);
deltastack(-(nparams+1));
return temp+nresults;
}
}
static void adjust_mult_assign (int vars, long exps)
{
if (exps > 0) { /* must correct function call */
int diff = L->currState->f->code[exps] - vars;
if (diff < 0)
adjust_functioncall(exps, -diff);
else {
adjust_functioncall(exps, 0);
adjuststack(diff);
}
}
else adjuststack((-exps)-vars);
}
static void code_args (int nparams, int dots)
{
L->currState->nlocalvar += nparams; /* "self" may already be there */
nparams = L->currState->nlocalvar;
if (!dots) {
L->currState->f->code[1] = nparams; /* fill-in arg information */
deltastack(nparams);
}
else {
L->currState->f->code[1] = nparams+ZEROVARARG;
deltastack(nparams+1);
add_localvar(luaS_new("arg"));
}
}
static void lua_pushvar (vardesc var)
{
if (isglobal(var))
code_oparg(GETGLOBAL, 8, globalindex(var), 1);
else if (islocal(var))
code_oparg(PUSHLOCAL, 8, localindex(var), 1);
else if (isdot(var))
code_oparg(GETDOTTED, 8, dotindex(var), 0);
else
code_pop(GETTABLE);
}
static void storevar (vardesc var)
{
if (var == 0) /* indexed var */
code_opcode(SETTABLE0, -3);
else if (isglobal(var))
code_oparg(SETGLOBAL, 8, globalindex(var), -1);
else /* local var */
code_oparg(SETLOCAL, 8, localindex(var), -1);
}
/* returns how many elements are left as 'garbage' on the stack */
static int lua_codestore (int i, int left)
{
if (L->currState->varbuffer[i] != 0 || /* global or local var or */
left+i == 0) { /* indexed var without values in between */
storevar(L->currState->varbuffer[i]);
return left;
}
else { /* indexed var with values in between*/
code_oparg(SETTABLE, 0, left+i, -1);
return left+2; /* table/index are not popped, since they are not on top */
}
}
static int fix_jump (int pc, OpCode op, int n)
{
/* jump is relative to position following jump instruction */
return fix_opcode(pc, op, 0, n-(pc+JMPSIZE));
}
static void fix_upjmp (OpCode op, int pos)
{
int delta = L->currState->pc+JMPSIZE - pos; /* jump is relative */
if (delta > 255) delta++;
code_oparg(op, 0, delta, 0);
}
static void codeIf (int thenAdd, int elseAdd)
{
int elseinit = elseAdd+JMPSIZE;
if (L->currState->pc == elseinit) { /* no else part */
L->currState->pc -= JMPSIZE;
elseinit = L->currState->pc;
}
else
elseinit += fix_jump(elseAdd, JMP, L->currState->pc);
fix_jump(thenAdd, IFFJMP, elseinit);
}
static void code_shortcircuit (int pc, OpCode op)
{
fix_jump(pc, op, L->currState->pc);
}
static void codereturn (void)
{
code_oparg(RETCODE, 0, L->currState->nlocalvar, 0);
L->currState->stacksize = L->currState->nlocalvar;
}
static void func_onstack (TProtoFunc *f)
{
int i;
int nupvalues = (L->currState+1)->nupvalues;
int c = next_constant(L->currState);
ttype(&L->currState->f->consts[c]) = LUA_T_PROTO;
L->currState->f->consts[c].value.tf = (L->currState+1)->f;
if (nupvalues == 0)
code_constant(c);
else {
for (i=0; i<nupvalues; i++)
lua_pushvar((L->currState+1)->upvalues[i]);
code_constant(c);
code_oparg(CLOSURE, 2, nupvalues, -nupvalues);
}
}
static void init_state (TaggedString *filename)
{
TProtoFunc *f = luaF_newproto();
FuncState *fs = L->currState;
fs->stacksize = 0;
fs->maxstacksize = 0;
fs->nlocalvar = 0;
fs->nupvalues = 0;
fs->f = f;
f->fileName = filename;
fs->pc = 0;
fs->maxcode = 0;
f->code = NULL;
fs->maxconsts = 0;
if (lua_debug) {
fs->nvars = 0;
fs->maxvars = 0;
}
else
fs->maxvars = -1; /* flag no debug information */
code_byte(0); /* to be filled with stacksize */
code_byte(0); /* to be filled with arg information */
L->lexstate->lastline = 0; /* invalidate it */
}
static void init_func (void)
{
if (L->currState-L->mainState >= MAXSTATES-1)
luaY_error("too many nested functions " MES_LIM(SMAXSTATES));
L->currState++;
init_state(L->mainState->f->fileName);
luaY_codedebugline(L->lexstate->linenumber);
L->currState->f->lineDefined = L->lexstate->linenumber;
}
static TProtoFunc *close_func (void)
{
TProtoFunc *f = L->currState->f;
code_neutralop(ENDCODE);
f->code[0] = L->currState->maxstacksize;
f->code = luaM_reallocvector(f->code, L->currState->pc, Byte);
f->consts = luaM_reallocvector(f->consts, f->nconsts, TObject);
if (L->currState->maxvars != -1) { /* debug information? */
luaI_registerlocalvar(NULL, -1); /* flag end of vector */
f->locvars = luaM_reallocvector(f->locvars, L->currState->nvars, LocVar);
}
L->currState--;
return f;
}
/*
** Parse Lua code.
*/
TProtoFunc *luaY_parser (ZIO *z)
{
struct LexState lexstate;
FuncState state[MAXSTATES];
L->currState = L->mainState = &state[0];
L->lexstate = &lexstate;
luaX_setinput(z);
init_state(luaS_new(zname(z)));
if (luaY_parse()) lua_error("parse error");
return close_func();
}
%}
%union
{
int vInt;
real vReal;
char *pChar;
long vLong;
TaggedString *pTStr;
TProtoFunc *pFunc;
}
%start chunk
%token WRONGTOKEN
%token NIL
%token IF THEN ELSE ELSEIF WHILE DO REPEAT UNTIL END
%token RETURN
%token LOCAL
%token FUNCTION
%token DOTS
%token <vReal> NUMBER
%token <pTStr> NAME STRING
%type <vInt> SaveWord, cond, GetPC, SaveWordPop, SaveWordPush
%type <vLong> exprlist, exprlist1 /* if > 0, points to function return
counter (which has list length); if <= 0, -list lenght */
%type <vLong> functioncall, expr, sexp /* if != 0, points to function return
counter */
%type <vInt> varlist1, funcParams, funcvalue
%type <vInt> fieldlist, localnamelist, decinit
%type <vInt> ffieldlist1, lfieldlist1, ffieldlist, lfieldlist, part
%type <vLong> var, varname, funcname /* vardesc */
%left AND OR
%left EQ NE '>' '<' LE GE
%left CONC
%left '+' '-'
%left '*' '/'
%left UNARY NOT
%right '^'
%% /* beginning of rules section */
chunk : statlist ret ;
statlist : /* empty */
| statlist stat sc
;
sc : /* empty */ | ';' ;
stat : IF cond THEN block SaveWord elsepart END { codeIf($2, $5); }
| DO block END
| WHILE GetPC cond DO block END
{{
FuncState *fs = L->currState;
int expsize = $3-$2;
int newpos = $2+JMPSIZE;
check_pc(expsize);
memcpy(fs->f->code+fs->pc, fs->f->code+$2, expsize);
luaO_memdown(fs->f->code+$2, fs->f->code+$3, fs->pc-$2);
newpos += fix_jump($2, JMP, fs->pc-expsize);
fix_upjmp(IFTUPJMP, newpos);
}}
| REPEAT GetPC block UNTIL expr1
{
fix_upjmp(IFFUPJMP, $2);
deltastack(-1); /* pops condition */
}
| varlist1 '=' exprlist1
{{
int i;
int left = 0;
adjust_mult_assign($1, $3);
for (i=$1-1; i>=0; i--)
left = lua_codestore(i, left);
adjuststack(left); /* remove eventual 'garbage' left on stack */
}}
| functioncall { adjust_functioncall($1, 0); }
| LOCAL localnamelist decinit
{
L->currState->nlocalvar += $2;
adjust_mult_assign($2, $3);
}
| FUNCTION funcname body { storevar($2); }
;
block : {$<vInt>$ = L->currState->nlocalvar;} chunk
{
adjuststack(L->currState->nlocalvar - $<vInt>1);
for (; L->currState->nlocalvar > $<vInt>1; L->currState->nlocalvar--)
luaI_unregisterlocalvar(L->lexstate->linenumber);
}
;
funcname : varname { $$ = $1; init_func(); }
| fvarname '.' fname
{
$$ = 0; /* flag indexed variable */
init_func();
}
| fvarname ':' fname
{
$$ = 0; /* flag indexed variable */
init_func();
add_localvar(luaS_new("self"));
}
;
fvarname : varname { lua_pushvar($1); } ;
fname : NAME { code_string($1); } ;
body : '(' parlist ')' chunk END { func_onstack(close_func()); } ;
elsepart : /* empty */
| ELSE block
| ELSEIF cond THEN block SaveWord elsepart { codeIf($2, $5); }
;
ret : /* empty */
| RETURN exprlist sc
{
adjust_functioncall($2, MULT_RET);
codereturn();
}
;
GetPC : /* empty */ { $$ = L->currState->pc; } ;
SaveWord : /* empty */
{ $$ = L->currState->pc;
check_pc(JMPSIZE);
L->currState->pc += JMPSIZE; /* open space */
}
;
SaveWordPop : SaveWord { $$ = $1; deltastack(-1); /* pop condition */ } ;
SaveWordPush : SaveWord { $$ = $1; deltastack(1); /* push a value */ } ;
cond : expr1 SaveWordPop { $$ = $2; } ;
expr1 : expr { adjust_functioncall($1, 1); } ;
expr : '(' expr ')' { $$ = $2; }
| expr1 EQ expr1 { code_binop(EQOP); $$ = 0; }
| expr1 '<' expr1 { code_binop(LTOP); $$ = 0; }
| expr1 '>' expr1 { code_binop(GTOP); $$ = 0; }
| expr1 NE expr1 { code_binop(NEQOP); $$ = 0; }
| expr1 LE expr1 { code_binop(LEOP); $$ = 0; }
| expr1 GE expr1 { code_binop(GEOP); $$ = 0; }
| expr1 '+' expr1 { code_binop(ADDOP); $$ = 0; }
| expr1 '-' expr1 { code_binop(SUBOP); $$ = 0; }
| expr1 '*' expr1 { code_binop(MULTOP); $$ = 0; }
| expr1 '/' expr1 { code_binop(DIVOP); $$ = 0; }
| expr1 '^' expr1 { code_binop(POWOP); $$ = 0; }
| expr1 CONC expr1 { code_binop(CONCOP); $$ = 0; }
| '-' expr1 %prec UNARY { code_unop(MINUSOP); $$ = 0;}
| NOT expr1 { code_unop(NOTOP); $$ = 0;}
| sexp { $$ = $1; /* simple expressions */ }
| table { $$ = 0; }
| NUMBER { code_number($1); $$ = 0; }
| STRING { code_string($1); $$ = 0; }
| NIL { adjuststack(-1); $$ = 0; }
| FUNCTION { init_func(); } body { $$ = 0; }
| expr1 AND SaveWordPop expr1 { code_shortcircuit($3, ONFJMP); $$ = 0; }
| expr1 OR SaveWordPop expr1 { code_shortcircuit($3, ONTJMP); $$ = 0; }
;
sexp1 : sexp { adjust_functioncall($1, 1); } ;
sexp : var { lua_pushvar($1); $$ = 0; }
| '%' NAME { pushupvalue($2); $$ = 0; }
| functioncall { $$ = $1; }
;
var : varname { $$ = $1; }
| sexp1 '[' expr1 ']' { $$ = 0; } /* indexed variable */
| sexp1 '.' NAME { $$ = (-string_constant($3, L->currState))-1; }
;
varname : NAME { $$ = singlevar($1, L->currState); } ;
table : '{' SaveWordPush fieldlist '}' { fix_opcode($2, CREATEARRAY, 2, $3); } ;
functioncall : funcvalue funcParams
{
code_byte(0); /* save space for opcode */
code_byte($1+$2); /* number of parameters */
$$ = L->currState->pc;
code_byte(0); /* must be adjusted by other rules */
}
;
funcvalue : sexp1 { $$ = 0; }
| sexp1 ':' NAME
{
code_oparg(PUSHSELF, 8, string_constant($3, L->currState), 1);
$$ = 1;
}
;
funcParams : '(' exprlist ')' { $$ = adjust_functioncall($2, 1); }
| table { $$ = 1; }
| STRING { code_string($1); $$ = 1; }
;
exprlist : /* empty */ { $$ = 0; }
| exprlist1 { $$ = $1; }
;
exprlist1 : expr { if ($1 != 0) $$ = $1; else $$ = -1; }
| exprlist1 ',' { $<vLong>$ = adjust_functioncall($1, 1); } expr
{
if ($4 == 0) $$ = -($<vLong>3 + 1); /* -length */
else {
L->currState->f->code[$4] = $<vLong>3; /* store list length */
$$ = $4;
}
}
;
parlist : /* empty */ { code_args(0, 0); }
| DOTS { code_args(0, 1); }
| localnamelist { code_args($1, 0); }
| localnamelist ',' DOTS { code_args($1, 1); }
;
fieldlist : part { $$ = abs($1); }
| part ';' part
{
if ($1*$3 > 0) /* repeated parts? */
luaY_error("invalid constructor syntax");
$$ = abs($1)+abs($3);
}
;
part : /* empty */ { $$ = 0; }
| ffieldlist { $$ = $1; }
| lfieldlist { $$ = $1; }
;
lastcomma : /* empty */ | ',' ;
ffieldlist : ffieldlist1 lastcomma
{
flush_record($1%RFIELDS_PER_FLUSH);
$$ = -$1; /* negative signals a "record" part */
}
;
lfieldlist : lfieldlist1 lastcomma
{
flush_list($1/LFIELDS_PER_FLUSH, $1%LFIELDS_PER_FLUSH);
$$ = $1;
}
;
ffieldlist1 : ffield {$$=1;}
| ffieldlist1 ',' ffield
{
$$=$1+1;
if ($$%RFIELDS_PER_FLUSH == 0)
flush_record(RFIELDS_PER_FLUSH);
}
;
ffield : ffieldkey '=' expr1 ;
ffieldkey : '[' expr1 ']'
| fname
;
lfieldlist1 : expr1 {$$=1;}
| lfieldlist1 ',' expr1
{
$$=$1+1;
if ($$%LFIELDS_PER_FLUSH == 0)
flush_list($$/LFIELDS_PER_FLUSH - 1, LFIELDS_PER_FLUSH);
}
;
varlist1 : var { $$ = 1; add_varbuffer($1, 0); }
| varlist1 ',' var { add_varbuffer($3, $1); $$ = $1+1; }
;
localnamelist : NAME {store_localvar($1, 0); $$ = 1;}
| localnamelist ',' NAME { store_localvar($3, $1); $$ = $1+1; }
;
decinit : /* empty */ { $$ = 0; }
| '=' exprlist1 { $$ = $2; }
;
%%

View File

@@ -1,33 +0,0 @@
/*
** $Id: $
** Debuging API
** See Copyright Notice in lua.h
*/
#ifndef luadebug_h
#define luadebug_h
#include "lua.h"
typedef lua_Object lua_Function;
typedef void (*lua_LHFunction) (int line);
typedef void (*lua_CHFunction) (lua_Function func, char *file, int line);
lua_Function lua_stackedfunction (int level);
void lua_funcinfo (lua_Object func, char **filename, int *linedefined);
int lua_currentline (lua_Function func);
char *lua_getobjname (lua_Object o, char **name);
lua_Object lua_getlocal (lua_Function func, int local_number, char **name);
int lua_setlocal (lua_Function func, int local_number);
extern lua_LHFunction lua_linehook;
extern lua_CHFunction lua_callhook;
extern int lua_debug;
#endif

View File

@@ -1,34 +1,15 @@
/*
** $Id: lualib.h,v 1.2 1997/11/26 18:53:45 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"
void lua_iolibopen (void);
void lua_strlibopen (void);
void lua_mathlibopen (void);
/* To keep compatibility with old versions */
#define iolib_open lua_iolibopen
#define strlib_open lua_strlibopen
#define mathlib_open lua_mathlibopen
/* auxiliar functions (private) */
int luaI_singlematch (int c, char *p, char **ep);
void iolib_open (void);
void strlib_open (void);
void mathlib_open (void);
#endif

272
lundump.c
View File

@@ -1,272 +0,0 @@
/*
** $Id: lundump.c,v 1.4 1998/01/13 20:05:24 lhf Exp $
** load bytecodes from files
** See Copyright Notice in lua.h
*/
#include <stdio.h>
#include "lauxlib.h"
#include "lfunc.h"
#include "lmem.h"
#include "lstring.h"
#include "lundump.h"
typedef struct {
ZIO* Z;
int SwapNumber;
int LoadFloat;
} Sundump;
static void unexpectedEOZ(ZIO* Z)
{
luaL_verror("unexpected end of binary file %s",Z->name);
}
static int ezgetc(ZIO* Z)
{
int c=zgetc(Z);
if (c==EOZ) unexpectedEOZ(Z);
return c;
}
static int ezread(ZIO* Z, void* b, int n)
{
int r=zread(Z,b,n);
if (r!=0) unexpectedEOZ(Z);
return r;
}
static int LoadWord(ZIO* Z)
{
int hi=ezgetc(Z);
int lo=ezgetc(Z);
return (hi<<8)|lo;
}
static void* LoadBlock(int size, ZIO* Z)
{
void* b=luaM_malloc(size);
ezread(Z,b,size);
return b;
}
static int LoadSize(ZIO* Z)
{
int hi=LoadWord(Z);
int lo=LoadWord(Z);
int s=(hi<<16)|lo;
if (hi!=0 && s==lo)
luaL_verror("code too long (%ld bytes)",(hi<<16)|(long)lo);
return s;
}
static char* LoadString(ZIO* Z)
{
int size=LoadWord(Z);
if (size==0)
return NULL;
else
{
char* b=luaL_openspace(size);
ezread(Z,b,size);
return b;
}
}
static TaggedString* LoadTString(ZIO* Z)
{
char* s=LoadString(Z);
return (s==NULL) ? NULL : luaS_new(s);
}
static void SwapFloat(float* f)
{
Byte* p=(Byte*)f;
Byte* q=p+sizeof(float)-1;
Byte t;
t=*p; *p++=*q; *q--=t;
t=*p; *p++=*q; *q--=t;
}
static void SwapDouble(double* f)
{
Byte* p=(Byte*)f;
Byte* q=p+sizeof(double)-1;
Byte t;
t=*p; *p++=*q; *q--=t;
t=*p; *p++=*q; *q--=t;
t=*p; *p++=*q; *q--=t;
t=*p; *p++=*q; *q--=t;
}
static real LoadNumber(Sundump* S)
{
if (S->LoadFloat)
{
float f;
ezread(S->Z,&f,sizeof(f));
if (S->SwapNumber) SwapFloat(&f);
return f;
}
else
{
double f;
ezread(S->Z,&f,sizeof(f));
if (S->SwapNumber) SwapDouble(&f);
return f;
}
}
static void LoadLocals(TProtoFunc* tf, ZIO* Z)
{
int i,n=LoadWord(Z);
if (n==0) return;
tf->locvars=luaM_newvector(n+1,LocVar);
for (i=0; i<n; i++)
{
tf->locvars[i].line=LoadWord(Z);
tf->locvars[i].varname=LoadTString(Z);
}
tf->locvars[i].line=-1; /* flag end of vector */
tf->locvars[i].varname=NULL;
}
static void LoadConstants(TProtoFunc* tf, Sundump* S)
{
int i,n=LoadWord(S->Z);
tf->nconsts=n;
if (n==0) return;
tf->consts=luaM_newvector(n,TObject);
for (i=0; i<n; i++)
{
TObject* o=tf->consts+i;
int c=ezgetc(S->Z);
switch (c)
{
case ID_NUM:
ttype(o)=LUA_T_NUMBER;
nvalue(o)=LoadNumber(S);
break;
case ID_STR:
ttype(o)=LUA_T_STRING;
tsvalue(o)=LoadTString(S->Z);
break;
case ID_FUN:
ttype(o)=LUA_T_PROTO;
tfvalue(o)=NULL;
break;
#ifdef DEBUG
default: /* cannot happen */
luaL_verror("internal error in LoadConstants: "
"bad constant #%d type=%d ('%c')\n",i,c,c);
break;
#endif
}
}
}
static TProtoFunc* LoadFunction(Sundump* S);
static void LoadFunctions(TProtoFunc* tf, Sundump* S)
{
while (zgetc(S->Z)==ID_FUNCTION)
{
int i=LoadWord(S->Z);
TProtoFunc* t=LoadFunction(S);
TObject* o=tf->consts+i;
tfvalue(o)=t;
}
}
static TProtoFunc* LoadFunction(Sundump* S)
{
ZIO* Z=S->Z;
TProtoFunc* tf=luaF_newproto();
tf->lineDefined=LoadWord(Z);
tf->fileName=LoadTString(Z);
tf->code=LoadBlock(LoadSize(Z),Z);
LoadConstants(tf,S);
LoadLocals(tf,Z);
LoadFunctions(tf,S);
return tf;
}
static void LoadSignature(ZIO* Z)
{
char* s=SIGNATURE;
while (*s!=0 && ezgetc(Z)==*s)
++s;
if (*s!=0) luaL_verror("bad signature in binary file %s",Z->name);
}
static void LoadHeader(Sundump* S)
{
ZIO* Z=S->Z;
int version,sizeofR;
LoadSignature(Z);
version=ezgetc(Z);
if (version>VERSION)
luaL_verror(
"binary file %s too new: version=0x%02x; expected at most 0x%02x",
Z->name,version,VERSION);
if (version<0x31) /* major change in 3.1 */
luaL_verror(
"binary file %s too old: version=0x%02x; expected at least 0x%02x",
Z->name,version,0x31);
sizeofR=ezgetc(Z); /* test float representation */
if (sizeofR==sizeof(float))
{
float f,tf=TEST_FLOAT;
ezread(Z,&f,sizeof(f));
if (f!=tf)
{
SwapFloat(&f);
if (f!=tf)
luaL_verror("unknown float representation in binary file %s",Z->name);
S->SwapNumber=1;
}
S->LoadFloat=1;
}
else if (sizeofR==sizeof(double))
{
double f,tf=TEST_FLOAT;
ezread(Z,&f,sizeof(f));
if (f!=tf)
{
SwapDouble(&f);
if (f!=tf)
luaL_verror("unknown float representation in binary file %s",Z->name);
S->SwapNumber=1;
}
S->LoadFloat=0;
}
else
luaL_verror(
"floats in binary file %s have %d bytes; "
"expected %d (float) or %d (double)",
Z->name,sizeofR,sizeof(float),sizeof(double));
}
static TProtoFunc* LoadChunk(Sundump* S)
{
LoadHeader(S);
return LoadFunction(S);
}
/*
** load one chunk from a file or buffer
** return main if ok and NULL at EOF
*/
TProtoFunc* luaU_undump1(ZIO* Z)
{
int c=zgetc(Z);
Sundump S;
S.Z=Z;
S.SwapNumber=0;
S.LoadFloat=1;
if (c==ID_CHUNK)
return LoadChunk(&S);
else if (c!=EOZ)
luaL_verror("%s is not a lua binary file",Z->name);
return NULL;
}

View File

@@ -1,27 +0,0 @@
/*
** $Id: lundump.h,v 1.4 1998/01/13 20:05:24 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"
#define ID_CHUNK 27 /* ESC */
#define ID_FUNCTION '#'
#define ID_END '$'
#define ID_NUM 'N'
#define ID_STR 'S'
#define ID_FUN 'F'
#define SIGNATURE "Lua"
#define VERSION 0x31 /* last format change was in 3.1 */
#define TEST_FLOAT 0.123456789e-23 /* a float for testing representation */
#define IsMain(f) (f->lineDefined==0)
TProtoFunc* luaU_undump1(ZIO* Z); /* load one chunk */
#endif

717
lvm.c
View File

@@ -1,717 +0,0 @@
/*
** $Id: lvm.c,v 1.22 1998/01/12 13:35:37 roberto Exp roberto $
** Lua virtual machine
** See Copyright Notice in lua.h
*/
#include <stdio.h>
#include <string.h>
#include "lauxlib.h"
#include "ldo.h"
#include "lfunc.h"
#include "lgc.h"
#include "lmem.h"
#include "lopcodes.h"
#include "lstate.h"
#include "lstring.h"
#include "ltable.h"
#include "ltm.h"
#include "luadebug.h"
#include "lvm.h"
#ifdef OLD_ANSI
#define strcoll(a,b) strcmp(a,b)
#endif
#define skip_word(pc) (pc+=2)
#define get_word(pc) (*(pc)+(*((pc)+1)<<8))
#define next_word(pc) (pc+=2, get_word(pc-2))
/* Extra stack size to run a function: LUA_T_LINE(1), TM calls(2), ... */
#define EXTRA_STACK 5
static TaggedString *strconc (char *l, char *r)
{
size_t nl = strlen(l);
char *buffer = luaL_openspace(nl+strlen(r)+1);
strcpy(buffer, l);
strcpy(buffer+nl, r);
return luaS_new(buffer);
}
int luaV_tonumber (TObject *obj)
{ /* LUA_NUMBER */
double t;
char c;
if (ttype(obj) != LUA_T_STRING)
return 1;
else if (sscanf(svalue(obj), "%lf %c",&t, &c) == 1) {
nvalue(obj) = (real)t;
ttype(obj) = LUA_T_NUMBER;
return 0;
}
else
return 2;
}
int luaV_tostring (TObject *obj)
{ /* LUA_NUMBER */
if (ttype(obj) != LUA_T_NUMBER)
return 1;
else {
char s[60];
real f = nvalue(obj);
int i;
if ((real)(-MAX_INT) <= f && f <= (real)MAX_INT && (real)(i=(int)f) == f)
sprintf (s, "%d", i);
else
sprintf (s, "%g", (double)nvalue(obj));
tsvalue(obj) = luaS_new(s);
ttype(obj) = LUA_T_STRING;
return 0;
}
}
void luaV_closure (int nelems)
{
if (nelems > 0) {
struct Stack *S = &L->stack;
Closure *c = luaF_newclosure(nelems);
c->consts[0] = *(S->top-1);
memcpy(&c->consts[1], S->top-(nelems+1), nelems*sizeof(TObject));
S->top -= nelems;
ttype(S->top-1) = LUA_T_CLOSURE;
(S->top-1)->value.cl = c;
}
}
/*
** Function to index a table.
** Receives the table at top-2 and the index at top-1.
*/
void luaV_gettable (void)
{
struct Stack *S = &L->stack;
TObject *im;
if (ttype(S->top-2) != LUA_T_ARRAY) /* not a table, get "gettable" method */
im = luaT_getimbyObj(S->top-2, IM_GETTABLE);
else { /* object is a table... */
int tg = (S->top-2)->value.a->htag;
im = luaT_getim(tg, IM_GETTABLE);
if (ttype(im) == LUA_T_NIL) { /* and does not have a "gettable" method */
TObject *h = luaH_get(avalue(S->top-2), S->top-1);
if (h != NULL && ttype(h) != LUA_T_NIL) {
--S->top;
*(S->top-1) = *h;
}
else if (ttype(im=luaT_getim(tg, IM_INDEX)) != LUA_T_NIL)
luaD_callTM(im, 2, 1);
else {
--S->top;
ttype(S->top-1) = LUA_T_NIL;
}
return;
}
/* else it has a "gettable" method, go through to next command */
}
/* object is not a table, or it has a "gettable" method */
if (ttype(im) != LUA_T_NIL)
luaD_callTM(im, 2, 1);
else
lua_error("indexed expression not a table");
}
/*
** Function to store indexed based on values at the stack.top
** mode = 0: raw store (without internal methods)
** mode = 1: normal store (with internal methods)
** mode = 2: "deep L->stack.stack" store (with internal methods)
*/
void luaV_settable (TObject *t, int mode)
{
struct Stack *S = &L->stack;
TObject *im = (mode == 0) ? NULL : luaT_getimbyObj(t, IM_SETTABLE);
if (ttype(t) == LUA_T_ARRAY && (im == NULL || ttype(im) == LUA_T_NIL)) {
TObject *h = luaH_set(avalue(t), t+1);
*h = *(S->top-1);
S->top -= (mode == 2) ? 1 : 3;
}
else { /* object is not a table, and/or has a specific "settable" method */
if (im && ttype(im) != LUA_T_NIL) {
if (mode == 2) {
*(S->top+1) = *(L->stack.top-1);
*(S->top) = *(t+1);
*(S->top-1) = *t;
S->top += 2; /* WARNING: caller must assure stack space */
}
luaD_callTM(im, 3, 0);
}
else
lua_error("indexed expression not a table");
}
}
void luaV_getglobal (TaggedString *ts)
{
/* WARNING: caller must assure stack space */
TObject *value = &ts->u.globalval;
TObject *im = luaT_getimbyObj(value, IM_GETGLOBAL);
if (ttype(im) == LUA_T_NIL) { /* default behavior */
*L->stack.top++ = *value;
}
else {
struct Stack *S = &L->stack;
ttype(S->top) = LUA_T_STRING;
tsvalue(S->top) = ts;
S->top++;
*S->top++ = *value;
luaD_callTM(im, 2, 1);
}
}
void luaV_setglobal (TaggedString *ts)
{
TObject *oldvalue = &ts->u.globalval;
TObject *im = luaT_getimbyObj(oldvalue, IM_SETGLOBAL);
if (ttype(im) == LUA_T_NIL) /* default behavior */
luaS_rawsetglobal(ts, --L->stack.top);
else {
/* WARNING: caller must assure stack space */
struct Stack *S = &L->stack;
TObject newvalue = *(S->top-1);
ttype(S->top-1) = LUA_T_STRING;
tsvalue(S->top-1) = ts;
*S->top++ = *oldvalue;
*S->top++ = newvalue;
luaD_callTM(im, 3, 0);
}
}
static void call_binTM (IMS event, char *msg)
{
TObject *im = luaT_getimbyObj(L->stack.top-2, event);/* try first operand */
if (ttype(im) == LUA_T_NIL) {
im = luaT_getimbyObj(L->stack.top-1, event); /* try second operand */
if (ttype(im) == LUA_T_NIL) {
im = luaT_getim(0, event); /* try a 'global' i.m. */
if (ttype(im) == LUA_T_NIL)
lua_error(msg);
}
}
lua_pushstring(luaT_eventname[event]);
luaD_callTM(im, 3, 1);
}
static void call_arith (IMS event)
{
call_binTM(event, "unexpected type in arithmetic operation");
}
static void comparison (lua_Type ttype_less, lua_Type ttype_equal,
lua_Type ttype_great, IMS op)
{
struct Stack *S = &L->stack;
TObject *l = S->top-2;
TObject *r = S->top-1;
int result;
if (ttype(l) == LUA_T_NUMBER && ttype(r) == LUA_T_NUMBER)
result = (nvalue(l) < nvalue(r)) ? -1 : (nvalue(l) == nvalue(r)) ? 0 : 1;
else if (ttype(l) == LUA_T_STRING && ttype(r) == LUA_T_STRING)
result = strcoll(svalue(l), svalue(r));
else {
call_binTM(op, "unexpected type in comparison");
return;
}
S->top--;
nvalue(S->top-1) = 1;
ttype(S->top-1) = (result < 0) ? ttype_less :
(result == 0) ? ttype_equal : ttype_great;
}
void luaV_pack (StkId firstel, int nvararg, TObject *tab)
{
TObject *firstelem = L->stack.stack+firstel;
int i;
if (nvararg < 0) nvararg = 0;
avalue(tab) = luaH_new(nvararg+1); /* +1 for field 'n' */
ttype(tab) = LUA_T_ARRAY;
for (i=0; i<nvararg; i++) {
TObject index;
ttype(&index) = LUA_T_NUMBER;
nvalue(&index) = i+1;
*(luaH_set(avalue(tab), &index)) = *(firstelem+i);
}
/* store counter in field "n" */ {
TObject index, extra;
ttype(&index) = LUA_T_STRING;
tsvalue(&index) = luaS_new("n");
ttype(&extra) = LUA_T_NUMBER;
nvalue(&extra) = nvararg;
*(luaH_set(avalue(tab), &index)) = extra;
}
}
static void adjust_varargs (StkId first_extra_arg)
{
TObject arg;
luaV_pack(first_extra_arg,
(L->stack.top-L->stack.stack)-first_extra_arg, &arg);
luaD_adjusttop(first_extra_arg);
*L->stack.top++ = arg;
}
/*
** Execute the given opcode, until a RET. Parameters are between
** [stack+base,top). Returns n such that the the results are between
** [stack+n,top).
*/
StkId luaV_execute (Closure *cl, TProtoFunc *tf, StkId base)
{
struct Stack *S = &L->stack; /* to optimize */
Byte *pc = tf->code;
TObject *consts = tf->consts;
if (lua_callhook)
luaD_callHook(base, tf, 0);
luaD_checkstack((*pc++)+EXTRA_STACK);
if (*pc < ZEROVARARG)
luaD_adjusttop(base+*(pc++));
else { /* varargs */
luaC_checkGC();
adjust_varargs(base+(*pc++)-ZEROVARARG);
}
while (1) {
int aux;
switch ((OpCode)(aux = *pc++)) {
case PUSHNIL0:
ttype(S->top++) = LUA_T_NIL;
break;
case PUSHNIL:
aux = *pc++;
do {
ttype(S->top++) = LUA_T_NIL;
} while (aux--);
break;
case PUSHNUMBER:
aux = *pc++; goto pushnumber;
case PUSHNUMBERW:
aux = next_word(pc); goto pushnumber;
case PUSHNUMBER0: case PUSHNUMBER1: case PUSHNUMBER2:
aux -= PUSHNUMBER0;
pushnumber:
ttype(S->top) = LUA_T_NUMBER;
nvalue(S->top) = aux;
S->top++;
break;
case PUSHLOCAL:
aux = *pc++; goto pushlocal;
case PUSHLOCAL0: case PUSHLOCAL1: case PUSHLOCAL2: case PUSHLOCAL3:
case PUSHLOCAL4: case PUSHLOCAL5: case PUSHLOCAL6: case PUSHLOCAL7:
aux -= PUSHLOCAL0;
pushlocal:
*S->top++ = *((S->stack+base) + aux);
break;
case GETGLOBALW:
aux = next_word(pc); goto getglobal;
case GETGLOBAL:
aux = *pc++; goto getglobal;
case GETGLOBAL0: case GETGLOBAL1: case GETGLOBAL2: case GETGLOBAL3:
case GETGLOBAL4: case GETGLOBAL5: case GETGLOBAL6: case GETGLOBAL7:
aux -= GETGLOBAL0;
getglobal:
luaV_getglobal(tsvalue(&consts[aux]));
break;
case GETTABLE:
luaV_gettable();
break;
case GETDOTTEDW:
aux = next_word(pc); goto getdotted;
case GETDOTTED:
aux = *pc++; goto getdotted;
case GETDOTTED0: case GETDOTTED1: case GETDOTTED2: case GETDOTTED3:
case GETDOTTED4: case GETDOTTED5: case GETDOTTED6: case GETDOTTED7:
aux -= GETDOTTED0;
getdotted:
*S->top++ = consts[aux];
luaV_gettable();
break;
case PUSHSELFW:
aux = next_word(pc); goto pushself;
case PUSHSELF:
aux = *pc++; goto pushself;
case PUSHSELF0: case PUSHSELF1: case PUSHSELF2: case PUSHSELF3:
case PUSHSELF4: case PUSHSELF5: case PUSHSELF6: case PUSHSELF7:
aux -= PUSHSELF0;
pushself: {
TObject receiver = *(S->top-1);
*S->top++ = consts[aux];
luaV_gettable();
*S->top++ = receiver;
break;
}
case PUSHCONSTANTW:
aux = next_word(pc); goto pushconstant;
case PUSHCONSTANT:
aux = *pc++; goto pushconstant;
case PUSHCONSTANT0: case PUSHCONSTANT1: case PUSHCONSTANT2:
case PUSHCONSTANT3: case PUSHCONSTANT4: case PUSHCONSTANT5:
case PUSHCONSTANT6: case PUSHCONSTANT7:
aux -= PUSHCONSTANT0;
pushconstant:
*S->top++ = consts[aux];
break;
case PUSHUPVALUE:
aux = *pc++; goto pushupvalue;
case PUSHUPVALUE0: case PUSHUPVALUE1:
aux -= PUSHUPVALUE0;
pushupvalue:
*S->top++ = cl->consts[aux+1];
break;
case SETLOCAL:
aux = *pc++; goto setlocal;
case SETLOCAL0: case SETLOCAL1: case SETLOCAL2: case SETLOCAL3:
case SETLOCAL4: case SETLOCAL5: case SETLOCAL6: case SETLOCAL7:
aux -= SETLOCAL0;
setlocal:
*((S->stack+base) + aux) = *(--S->top);
break;
case SETGLOBALW:
aux = next_word(pc); goto setglobal;
case SETGLOBAL:
aux = *pc++; goto setglobal;
case SETGLOBAL0: case SETGLOBAL1: case SETGLOBAL2: case SETGLOBAL3:
case SETGLOBAL4: case SETGLOBAL5: case SETGLOBAL6: case SETGLOBAL7:
aux -= SETGLOBAL0;
setglobal:
luaV_setglobal(tsvalue(&consts[aux]));
break;
case SETTABLE0:
luaV_settable(S->top-3, 1);
break;
case SETTABLE:
luaV_settable(S->top-3-(*pc++), 2);
break;
case SETLISTW:
aux = next_word(pc); aux *= LFIELDS_PER_FLUSH; goto setlist;
case SETLIST:
aux = *(pc++) * LFIELDS_PER_FLUSH; goto setlist;
case SETLIST0:
aux = 0;
setlist: {
int n = *(pc++);
TObject *arr = S->top-n-1;
for (; n; n--) {
ttype(S->top) = LUA_T_NUMBER;
nvalue(S->top) = n+aux;
*(luaH_set(avalue(arr), S->top)) = *(S->top-1);
S->top--;
}
break;
}
case SETMAP0:
aux = 0; goto setmap;
case SETMAP:
aux = *pc++;
setmap: {
TObject *arr = S->top-(2*aux)-3;
do {
*(luaH_set(avalue(arr), S->top-2)) = *(S->top-1);
S->top-=2;
} while (aux--);
break;
}
case POP:
aux = *pc++; goto pop;
case POP0: case POP1:
aux -= POP0;
pop:
S->top -= (aux+1);
break;
case CREATEARRAYW:
aux = next_word(pc); goto createarray;
case CREATEARRAY0: case CREATEARRAY1:
aux -= CREATEARRAY0; goto createarray;
case CREATEARRAY:
aux = *pc++;
createarray:
luaC_checkGC();
avalue(S->top) = luaH_new(aux);
ttype(S->top) = LUA_T_ARRAY;
S->top++;
break;
case EQOP: case NEQOP: {
int res = luaO_equalObj(S->top-2, S->top-1);
S->top--;
if (aux == NEQOP) res = !res;
ttype(S->top-1) = res ? LUA_T_NUMBER : LUA_T_NIL;
nvalue(S->top-1) = 1;
break;
}
case LTOP:
comparison(LUA_T_NUMBER, LUA_T_NIL, LUA_T_NIL, IM_LT);
break;
case LEOP:
comparison(LUA_T_NUMBER, LUA_T_NUMBER, LUA_T_NIL, IM_LE);
break;
case GTOP:
comparison(LUA_T_NIL, LUA_T_NIL, LUA_T_NUMBER, IM_GT);
break;
case GEOP:
comparison(LUA_T_NIL, LUA_T_NUMBER, LUA_T_NUMBER, IM_GE);
break;
case ADDOP: {
TObject *l = S->top-2;
TObject *r = S->top-1;
if (tonumber(r) || tonumber(l))
call_arith(IM_ADD);
else {
nvalue(l) += nvalue(r);
--S->top;
}
break;
}
case SUBOP: {
TObject *l = S->top-2;
TObject *r = S->top-1;
if (tonumber(r) || tonumber(l))
call_arith(IM_SUB);
else {
nvalue(l) -= nvalue(r);
--S->top;
}
break;
}
case MULTOP: {
TObject *l = S->top-2;
TObject *r = S->top-1;
if (tonumber(r) || tonumber(l))
call_arith(IM_MUL);
else {
nvalue(l) *= nvalue(r);
--S->top;
}
break;
}
case DIVOP: {
TObject *l = S->top-2;
TObject *r = S->top-1;
if (tonumber(r) || tonumber(l))
call_arith(IM_DIV);
else {
nvalue(l) /= nvalue(r);
--S->top;
}
break;
}
case POWOP:
call_arith(IM_POW);
break;
case CONCOP: {
TObject *l = S->top-2;
TObject *r = S->top-1;
if (tostring(l) || tostring(r))
call_binTM(IM_CONCAT, "unexpected type for concatenation");
else {
tsvalue(l) = strconc(svalue(l), svalue(r));
--S->top;
}
luaC_checkGC();
break;
}
case MINUSOP:
if (tonumber(S->top-1)) {
ttype(S->top) = LUA_T_NIL;
S->top++;
call_arith(IM_UNM);
}
else
nvalue(S->top-1) = - nvalue(S->top-1);
break;
case NOTOP:
ttype(S->top-1) =
(ttype(S->top-1) == LUA_T_NIL) ? LUA_T_NUMBER : LUA_T_NIL;
nvalue(S->top-1) = 1;
break;
case ONTJMPW:
aux = next_word(pc); goto ontjmp;
case ONTJMP:
aux = *pc++;
ontjmp:
if (ttype(S->top-1) != LUA_T_NIL) pc += aux;
else S->top--;
break;
case ONFJMPW:
aux = next_word(pc); goto onfjmp;
case ONFJMP:
aux = *pc++;
onfjmp:
if (ttype(S->top-1) == LUA_T_NIL) pc += aux;
else S->top--;
break;
case JMPW:
aux = next_word(pc); goto jmp;
case JMP:
aux = *pc++;
jmp:
pc += aux;
break;
case IFFJMPW:
aux = next_word(pc); goto iffjmp;
case IFFJMP:
aux = *pc++;
iffjmp:
if (ttype(--S->top) == LUA_T_NIL) pc += aux;
break;
case IFTUPJMPW:
aux = next_word(pc); goto iftupjmp;
case IFTUPJMP:
aux = *pc++;
iftupjmp:
if (ttype(--S->top) != LUA_T_NIL) pc -= aux;
break;
case IFFUPJMPW:
aux = next_word(pc); goto iffupjmp;
case IFFUPJMP:
aux = *pc++;
iffupjmp:
if (ttype(--S->top) == LUA_T_NIL) pc -= aux;
break;
case CLOSURE:
aux = *pc++; goto closure;
case CLOSURE0: case CLOSURE1:
aux -= CLOSURE0;
closure:
luaV_closure(aux);
luaC_checkGC();
break;
case CALLFUNC:
aux = *pc++; goto callfunc;
case CALLFUNC0: case CALLFUNC1:
aux -= CALLFUNC0;
callfunc: {
StkId newBase = (S->top-S->stack)-(*pc++);
luaD_call(newBase, aux);
break;
}
case ENDCODE:
S->top = S->stack + base;
/* goes through */
case RETCODE:
if (lua_callhook)
luaD_callHook(base, NULL, 1);
return (base + ((aux==RETCODE) ? *pc : 0));
case SETLINEW:
aux = next_word(pc); goto setline;
case SETLINE:
aux = *pc++;
setline:
if ((S->stack+base-1)->ttype != LUA_T_LINE) {
/* open space for LINE value */
luaD_openstack((S->top-S->stack)-base);
base++;
(S->stack+base-1)->ttype = LUA_T_LINE;
}
(S->stack+base-1)->value.i = aux;
if (lua_linehook)
luaD_lineHook(aux);
break;
#ifdef DEBUG
default:
lua_error("internal error - opcode doesn't match");
#endif
}
}
}

29
lvm.h
View File

@@ -1,29 +0,0 @@
/*
** $Id: lvm.h,v 1.3 1997/10/16 10:59:34 roberto Exp roberto $
** Lua virtual machine
** See Copyright Notice in lua.h
*/
#ifndef lvm_h
#define lvm_h
#include "ldo.h"
#include "lobject.h"
#define tonumber(o) ((ttype(o) != LUA_T_NUMBER) && (luaV_tonumber(o) != 0))
#define tostring(o) ((ttype(o) != LUA_T_STRING) && (luaV_tostring(o) != 0))
void luaV_pack (StkId firstel, int nvararg, TObject *tab);
int luaV_tonumber (TObject *obj);
int luaV_tostring (TObject *obj);
void luaV_gettable (void);
void luaV_settable (TObject *t, int mode);
void luaV_getglobal (TaggedString *ts);
void luaV_setglobal (TaggedString *ts);
StkId luaV_execute (Closure *cl, TProtoFunc *tf, StkId base);
void luaV_closure (int nelems);
#endif

84
lzio.c
View File

@@ -1,84 +0,0 @@
/*
** $Id: lzio.c,v 1.2 1997/11/21 19:00:46 roberto Exp roberto $
** a generic input stream interface
** See Copyright Notice in lua.h
*/
#include <stdio.h>
#include <string.h>
#include "lzio.h"
/* ----------------------------------------------------- memory buffers --- */
static int zmfilbuf (ZIO* z)
{
return EOZ;
}
ZIO* zmopen (ZIO* z, char* b, int size, char *name)
{
if (b==NULL) return NULL;
z->n=size;
z->p= (unsigned char *)b;
z->filbuf=zmfilbuf;
z->u=NULL;
z->name=name;
return z;
}
/* ------------------------------------------------------------ strings --- */
ZIO* zsopen (ZIO* z, char* s, char *name)
{
if (s==NULL) return NULL;
return zmopen(z,s,strlen(s),name);
}
/* -------------------------------------------------------------- FILEs --- */
static int zffilbuf (ZIO* z)
{
int n=fread(z->buffer,1,ZBSIZE,z->u);
if (n==0) return EOZ;
z->n=n-1;
z->p=z->buffer;
return *(z->p++);
}
ZIO* zFopen (ZIO* z, FILE* f, char *name)
{
if (f==NULL) return NULL;
z->n=0;
z->p=z->buffer;
z->filbuf=zffilbuf;
z->u=f;
z->name=name;
return z;
}
/* --------------------------------------------------------------- read --- */
int zread (ZIO *z, void *b, int n)
{
while (n) {
int m;
if (z->n == 0) {
if (z->filbuf(z) == EOZ)
return n; /* retorna quantos faltaram ler */
zungetc(z); /* poe o resultado de filbuf no buffer */
}
m = (n <= z->n) ? n : z->n; /* minimo de n e z->n */
memcpy(b, z->p, m);
z->n -= m;
z->p += m;
b = (char *)b + m;
n -= m;
}
return 0;
}

50
lzio.h
View File

@@ -1,50 +0,0 @@
/*
** $Id: lzio.h,v 1.3 1997/12/22 20:57:18 roberto Exp roberto $
** Buffered streams
** See Copyright Notice in lua.h
*/
#ifndef lzio_h
#define lzio_h
#include <stdio.h>
/* For Lua only */
#define zFopen luaZ_Fopen
#define zsopen luaZ_sopen
#define zmopen luaZ_mopen
#define zread luaZ_read
#define EOZ (-1) /* end of stream */
typedef struct zio ZIO;
ZIO* zFopen (ZIO* z, FILE* f, char *name); /* open FILEs */
ZIO* zsopen (ZIO* z, char* s, char *name); /* string */
ZIO* zmopen (ZIO* z, char* b, int size, char *name); /* memory */
int zread (ZIO* z, void* b, int n); /* read next n bytes */
#define zgetc(z) (--(z)->n>=0 ? ((int)*(z)->p++): (z)->filbuf(z))
#define zungetc(z) (++(z)->n,--(z)->p)
#define zname(z) ((z)->name)
/* --------- Private Part ------------------ */
#define ZBSIZE 256 /* buffer size */
struct zio {
int n; /* bytes still unread */
unsigned char* p; /* current position in buffer */
int (*filbuf)(ZIO* z);
void* u; /* additional data */
char *name;
unsigned char buffer[ZBSIZE]; /* buffer */
};
#endif

125
makefile
View File

@@ -1,125 +0,0 @@
#
## $Id: makefile,v 1.9 1998/01/02 17:46:32 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 (undefine) OLD_ANSI if your system does NOT have some new ANSI
# facilities (e.g. strerror, locale.h, memmove). Although they are ANSI,
# SunOS does not comply; so, add "-DOLD_ANSI" on SunOS
#
# define LUA_COMPAT2_5 if yous system does need to be compatible with
# version 2.5 (or older)
CONFIG = -DPOPEN -D_POSIX_SOURCE
#CONFIG = -DLUA_COMPAT2_5 -DOLD_ANSI -DDEBUG
# Compilation parameters
CC = gcc
CWARNS = -Wall -Wmissing-prototypes -Wshadow -pedantic -Wpointer-arith -Wcast-align -Waggregate-return
CFLAGS = $(CONFIG) $(CWARNS) -ansi -O2
AR = ar
ARFLAGS = rvl
# Aplication modules
LUAOBJS = \
lapi.o \
lauxlib.o \
lbuffer.o \
lbuiltin.o \
ldo.o \
lfunc.o \
lgc.o \
llex.o \
lmem.o \
lobject.o \
lstate.o \
lstx.o \
lstring.o \
ltable.o \
ltm.o \
lvm.o \
lundump.o \
lzio.o
LIBOBJS = \
liolib.o \
lmathlib.o \
lstrlib.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)
lstx.c lstx.h : lua.stx
bison -o lstx.c -p luaY_ -d lua.stx
# yacc -d lua.stx
# sed -e 's/yy/luaY_/g' -e 's/malloc\.h/stdlib\.h/g' y.tab.c > lstx.c
# sed -e 's/yy/luaY_/g' y.tab.h > lstx.h
clear :
rcsclean
rm -f *.o
rm -f lstx.c lstx.h
co lua.h lualib.h luadebug.h
%.h : RCS/%.h,v
co $@
%.c : RCS/%.c,v
co $@
lapi.o: lapi.c lapi.h lua.h lobject.h lauxlib.h ldo.h lstate.h lfunc.h \
lgc.h lmem.h lstring.h ltable.h ltm.h luadebug.h lvm.h
lauxlib.o: lauxlib.c lauxlib.h lua.h luadebug.h
lbuffer.o: lbuffer.c lauxlib.h lua.h lmem.h lstate.h lobject.h
lbuiltin.o: lbuiltin.c lapi.h lua.h lobject.h lauxlib.h lbuiltin.h \
ldo.h lstate.h lfunc.h lmem.h lstring.h ltable.h ltm.h
ldo.o: ldo.c ldo.h lobject.h lua.h lstate.h lfunc.h lgc.h lmem.h \
lparser.h lzio.h ltm.h luadebug.h lundump.h lvm.h
lfunc.o: lfunc.c lfunc.h lobject.h lua.h lmem.h lstate.h
lgc.o: lgc.c ldo.h lobject.h lua.h lstate.h lfunc.h lgc.h lmem.h \
lstring.h ltable.h ltm.h
liolib.o: liolib.c lauxlib.h lua.h luadebug.h lualib.h
llex.o: llex.c lauxlib.h lua.h llex.h lobject.h lzio.h lmem.h \
lparser.h lstate.h lstring.h lstx.h luadebug.h
lmathlib.o: lmathlib.c lauxlib.h lua.h lualib.h
lmem.o: lmem.c lmem.h lstate.h lobject.h lua.h
lobject.o: lobject.c lobject.h lua.h
lstate.o: lstate.c lbuiltin.h ldo.h lobject.h lua.h lstate.h lfunc.h \
lgc.h llex.h lzio.h lmem.h lstring.h ltable.h ltm.h
lstring.o: lstring.c lmem.h lobject.h lua.h lstate.h lstring.h
lstrlib.o: lstrlib.c lauxlib.h lua.h lualib.h
lstx.o: lstx.c lauxlib.h lua.h ldo.h lobject.h lstate.h lfunc.h llex.h \
lzio.h lmem.h lopcodes.h lparser.h lstring.h luadebug.h
ltable.o: ltable.c lauxlib.h lua.h lmem.h lobject.h lstate.h ltable.h
ltm.o: ltm.c lauxlib.h lua.h lmem.h lobject.h lstate.h ltm.h lapi.h
lua.o: lua.c lua.h luadebug.h lualib.h
lundump.o: lundump.c lauxlib.h lua.h lfunc.h lobject.h lmem.h \
lstring.h lundump.h lzio.h
lvm.o: lvm.c lauxlib.h lua.h ldo.h lobject.h lstate.h lfunc.h lgc.h \
lmem.h lopcodes.h lstring.h ltable.h ltm.h luadebug.h lvm.h
lzio.o: lzio.c lzio.h

2749
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
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/*
** 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

47
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
** 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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@@ -0,0 +1,35 @@
$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

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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