new version is beta.

to new way to handle growing vectors (previous modification).

auxlib.c

@@ -1,81 +0,0 @@
-char *rcs_auxlib="$Id: auxlib.c,v 1.4 1997/04/07 14:48:53 roberto Exp roberto $";
-
-#include <stdio.h>
-#include <stdarg.h>
-#include <string.h>
-
-#include "lua.h"
-#include "auxlib.h"
-#include "luadebug.h"
-
-
-
-int luaI_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 luaL_arg_check(int cond, int numarg, char *extramsg)
-{
-  if (!cond) {
-    char *funcname;
-    lua_getobjname(lua_stackedfunction(0), &funcname);
-    if (funcname == NULL)
-      funcname = "???";
-    if (extramsg == NULL)
-      luaL_verror("bad argument #%d to function `%s'", numarg, funcname);
-    else
-      luaL_verror("bad argument #%d to function `%s' (%s)",
-                      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);
-}
-
-void luaL_openlib (struct luaL_reg *l, int n)
-{
-  int i;
-  for (i=0; i<n; i++)
-    lua_register(l[i].name, l[i].func);
-}
-
-
-void luaL_verror (char *fmt, ...)
-{
-  char buff[1000];
-  va_list argp;
-  va_start(argp, fmt);
-  vsprintf(buff, fmt, argp);
-  va_end(argp);
-  lua_error(buff);
-}

auxlib.h

@@ -1,30 +0,0 @@
-/*
-** $Id: auxlib.h,v 1.2 1997/04/06 14:08:08 roberto Exp roberto $
-*/
-
-#ifndef auxlib_h
-#define auxlib_h
-
-#include "lua.h"
-
-struct luaL_reg {
-  char *name;
-  lua_CFunction func;
-};
-
-void luaL_openlib (struct luaL_reg *l, int n);
-void luaL_arg_check(int cond, 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);
-void luaL_verror (char *fmt, ...);
-
-
-
-/* -- private part (only for Lua modules */
-
-int luaI_findstring (char *name, char *list[]);
-
-
-#endif

bugs

@@ -0,0 +1,77 @@
+** lua.stx / llex.c
+Tue Dec  2 10:45:48 EDT 1997
+>> BUG: "lastline" was not reset on function entry, so debug information
+>> started only in the 2nd line of a function.
+
+
+--- Version 3.1 alpha
+
+** lua.c
+Thu Jan 15 14:34:58 EDT 1998
+>> must include "stdlib.h" (for "exit()").
+
+** lbuiltin.c / lobject.h
+Thu Jan 15 14:34:58 EDT 1998
+>> MAX_WORD may be bigger than MAX_INT
+
+
+** llex.c
+Mon Jan 19 18:17:18 EDT 1998
+>> wrong line number (+1) in error report when file starts with "#..."
+
+** lstrlib.c
+Tue Jan 27 15:27:49 EDT 1998
+>> formats like "%020d" were considered too big (3 digits); moreover,
+>> some sistems limit printf to at most 500 chars, so we can limit sizes
+>> to 2 digits (99).
+
+** lapi.c
+Tue Jan 27 17:12:36 EDT 1998
+>> "lua_getstring" may create a new string, so should check GC
+
+** lstring.c / ltable.c
+Wed Jan 28 14:48:12 EDT 1998
+>> tables can become full of "empty" slots, and keep growing without limits.
+
+** lstrlib.c
+Mon Mar  9 15:26:09 EST 1998
+>> gsub('a', '(b?)%1*' ...) loops (because the capture is empty).
+
+** lstrlib.c
+Mon May 18 19:20:00 EST 1998
+>> arguments for "format" 'x', 'X', 'o' and 'u' must be unsigned int.
+
+
+--- Version 3.1
+
+** liolib.c / lauxlib.c
+Mon Sep  7 15:57:02 EST 1998
+>> function "luaL_argerror" prints wrong argument number (from a user's point
+of view) when functions have upvalues.
+
+** lstrlib.c
+Tue Nov 10 17:29:36 EDT 1998
+>> gsub/strfind do not check whether captures are properly finished.
+
+** lbuiltin.c
+Fri Dec 18 11:22:55 EDT 1998
+>> "tonumber" goes crazy with negative numbers in other bases (not 10),
+because "strtol" returns long, not unsigned long.
+
+** lstrlib.c
+Mon Jan  4 10:41:40 EDT 1999
+>> "format" does not check size of format item (such as "%00000...00000d").
+
+** lapi.c
+Wed Feb  3 14:40:21 EDT 1999
+>> getlocal cannot return the local itself, since lua_isstring and
+lua_isnumber can modify it.
+
+** lstrlib.c
+Thu Feb  4 17:08:50 EDT 1999
+>> format "%s" may break limit of "sprintf" on some machines.
+
+
+** lzio.c
+Thu Mar  4 11:49:37 EST 1999
+>> file stream cannot call fread after EOF.

fallback.c

@@ -1,368 +0,0 @@
-/*
-** fallback.c
-** TecCGraf - PUC-Rio
-*/
- 
-char *rcs_fallback="$Id: fallback.c,v 2.8 1997/06/17 17:27:07 roberto Exp roberto $";
-
-#include <stdio.h>
-#include <string.h>
- 
-#include "auxlib.h"
-#include "luamem.h"
-#include "fallback.h"
-#include "opcode.h"
-#include "lua.h"
-#include "table.h"
-#include "tree.h"
-#include "hash.h"
-
-
-
-/* -------------------------------------------
-** Reference routines
-*/
-
-static struct ref {
-  TObject o;
-  enum {LOCK, HOLD, FREE, COLLECTED} status;
-} *refArray = NULL;
-static int refSize = 0;
-
-int luaI_ref (TObject *object, int lock)
-{
-  int i;
-  int oldSize;
-  if (ttype(object) == LUA_T_NIL)
-    return -1;   /* special ref for nil */
-  for (i=0; i<refSize; i++)
-    if (refArray[i].status == FREE)
-      goto found;
-  /* no more empty spaces */
-  oldSize = refSize;
-  refSize = growvector(&refArray, refSize, struct ref, refEM, MAX_WORD);
-  for (i=oldSize; i<refSize; i++)
-    refArray[i].status = FREE;
-  i = oldSize;
- found:
-  refArray[i].o = *object;
-  refArray[i].status = lock ? LOCK : HOLD;
-  return i;
-}
-
-
-void lua_unref (int ref)
-{
-  if (ref >= 0 && ref < refSize)
-    refArray[ref].status = FREE;
-}
-
-
-TObject *luaI_getref (int ref)
-{
-  static TObject nul = {LUA_T_NIL, {0}};
-  if (ref == -1)
-    return &nul;
-  if (ref >= 0 && ref < refSize &&
-      (refArray[ref].status == LOCK || refArray[ref].status == HOLD))
-    return &refArray[ref].o;
-  else
-    return NULL;
-}
-
-
-void luaI_travlock (int (*fn)(TObject *))
-{
-  int i;
-  for (i=0; i<refSize; i++)
-    if (refArray[i].status == LOCK)
-      fn(&refArray[i].o);
-}
-
-
-void luaI_invalidaterefs (void)
-{
-  int i;
-  for (i=0; i<refSize; i++)
-    if (refArray[i].status == HOLD && !luaI_ismarked(&refArray[i].o))
-      refArray[i].status = COLLECTED;
-}
-
-
-/* -------------------------------------------
-* Internal Methods 
-*/
-
-char *luaI_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 = luaI_findstring(name, list);
-  if (e < 0)
-    luaL_verror("`%s' is not a valid event name", name);
-  return e;
-}
-
-
-struct IM *luaI_IMtable = NULL;
-
-static int IMtable_size = 0;
-static int last_tag = LUA_T_NIL;  /* ORDER LUA_T */
-
-
-/* events in LUA_T_LINE are all allowed, since this is used as a
-*  'placeholder' for "default" fallbacks
-*/
-static char validevents[NUM_TYPES][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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1},  /* LUA_T_LINE */
-{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},  /* LUA_T_CMARK */
-{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},  /* LUA_T_MARK */
-{1, 1, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0},  /* LUA_T_CFUNCTION */
-{1, 1, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0},  /* LUA_T_FUNCTION */
-{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, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1},  /* LUA_T_STRING */
-{1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1},  /* LUA_T_NUMBER */
-{1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1}   /* LUA_T_NIL */
-};
-
-static int validevent (lua_Type 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(luaI_getim(tag, i)) = LUA_T_NIL;
-}
-
-void luaI_initfallbacks (void)
-{
-  if (luaI_IMtable == NULL) {
-    int i;
-    IMtable_size = NUM_TYPES+10;
-    luaI_IMtable = newvector(IMtable_size, struct IM);
-    for (i=LUA_T_NIL; i<=LUA_T_USERDATA; i++)
-      init_entry(i);
-  }
-}
-
-int lua_newtag (void)
-{
-  --last_tag;
-  if ((-last_tag) >= IMtable_size) {
-    luaI_initfallbacks();
-    IMtable_size = growvector(&luaI_IMtable, IMtable_size,
-                              struct IM, memEM, MAX_INT);
-  }
-  init_entry(last_tag);
-  return last_tag;
-}
-
-
-static void checktag (int tag)
-{
-  if (!(last_tag <= tag && tag <= 0))
-    luaL_verror("%d is not a valid tag", tag);
-}
-
-void luaI_realtag (int tag)
-{
-  if (!(last_tag <= tag && tag < LUA_T_NIL))
-    luaL_verror("tag %d is not result of `newtag'", tag);
-}
-
-
-void luaI_settag (int tag, TObject *o)
-{
-  luaI_realtag(tag);
-  switch (ttype(o)) {
-    case LUA_T_ARRAY:
-      o->value.a->htag = tag;
-      break;
-    case LUA_T_USERDATA:
-      o->value.ts->tag = tag;
-      break;
-    default:
-      luaL_verror("cannot change the tag of a %s", luaI_typenames[-ttype(o)]);
-  }
-}
-
-
-int luaI_efectivetag (TObject *o)
-{
-  lua_Type t = ttype(o);
-  if (t == LUA_T_USERDATA) {
-    int tag = o->value.ts->tag;
-    return (tag >= 0) ? LUA_T_USERDATA : tag;
-  }
-  else if (t == LUA_T_ARRAY)
-    return o->value.a->htag;
-  else return t;
-}
-
-
-void luaI_gettagmethod (void)
-{
-  int t = (int)luaL_check_number(1);
-  int e = luaI_checkevent(luaL_check_string(2), luaI_eventname);
-  checktag(t);
-  if (validevent(t, e))
-    luaI_pushobject(luaI_getim(t,e));
-}
-
-
-void luaI_settagmethod (void)
-{
-  int t = (int)luaL_check_number(1);
-  int e = luaI_checkevent(luaL_check_string(2), luaI_eventname);
-  lua_Object func = lua_getparam(3);
-  checktag(t);
-  if (!validevent(t, e))
-    luaL_verror("cannot change internal method `%s' for tag %d",
-                luaI_eventname[e], t);
-  luaL_arg_check(lua_isnil(func) || lua_isfunction(func),
-                 3, "function expected");
-  luaI_pushobject(luaI_getim(t,e));
-  *luaI_getim(t, e) = *luaI_Address(func);
-}
-
-
-static void stderrorim (void)
-{
-  lua_Object s = lua_getparam(1);
-  if (lua_isstring(s))
-    fprintf(stderr, "lua: %s\n", lua_getstring(s));
-}
-
-static TObject errorim = {LUA_T_CFUNCTION, {stderrorim}};
-
-
-TObject *luaI_geterrorim (void)
-{
-  return &errorim;
-}
-
-void luaI_seterrormethod (void)
-{
-  lua_Object func = lua_getparam(1);
-  luaL_arg_check(lua_isnil(func) || lua_isfunction(func),
-                 1, "function expected");
-  luaI_pushobject(&errorim);
-  errorim = *luaI_Address(func);
-}
-
-char *luaI_travfallbacks (int (*fn)(TObject *))
-{
-  int e;
-  if (fn(&errorim))
-    return "error";
-  for (e=IM_GETTABLE; e<=IM_FUNCTION; e++) {  /* ORDER IM */
-    int t;
-    for (t=0; t>=last_tag; t--)
-      if (fn(luaI_getim(t,e)))
-        return luaI_eventname[e];
-  }
-  return NULL;
-}
-
-
-/*
-* ===================================================================
-* compatibility with old fallback system
-*/
-#if	LUA_COMPAT2_5
-
-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))
-      *luaI_getim(t, e) = *func;
-}
-
-
-void luaI_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);
-  luaI_initfallbacks();
-  luaL_arg_check(lua_isfunction(func), 2, "function expected");
-  switch (luaI_findstring(name, oldnames)) {
-    case 0:  /* old error fallback */
-      oldfunc = errorim;
-      errorim = *luaI_Address(func);
-      replace = errorFB;
-      break;
-    case 1:  /* old getglobal fallback */
-      oldfunc = *luaI_getim(LUA_T_NIL, IM_GETGLOBAL);
-      *luaI_getim(LUA_T_NIL, IM_GETGLOBAL) = *luaI_Address(func);
-      replace = nilFB;
-      break;
-    case 2: {  /* old arith fallback */
-      int i;
-      oldfunc = *luaI_getim(LUA_T_NUMBER, IM_POW);
-      for (i=IM_ADD; i<=IM_UNM; i++)  /* ORDER IM */
-        fillvalids(i, luaI_Address(func));
-      replace = typeFB;
-      break;
-    }
-    case 3: {  /* old order fallback */
-      int i;
-      oldfunc = *luaI_getim(LUA_T_LINE, IM_LT);
-      for (i=IM_LT; i<=IM_GE; i++)  /* ORDER IM */
-        fillvalids(i, luaI_Address(func));
-      replace = typeFB;
-      break;
-    }
-    default: {
-      int e;
-      if ((e = luaI_findstring(name, luaI_eventname)) >= 0) {
-        oldfunc = *luaI_getim(LUA_T_LINE, e);
-        fillvalids(e, luaI_Address(func));
-        replace = (e == IM_GC || e == IM_INDEX) ? nilFB : typeFB;
-      }
-      else {
-        luaL_verror("`%s' is not a valid fallback name", name);
-        replace = NULL;  /* to avoid warnings */
-      }
-    }
-  }
-  if (oldfunc.ttype != LUA_T_NIL)
-    luaI_pushobject(&oldfunc);
-  else
-    lua_pushcfunction(replace);
-}
-#endif 

fallback.h

@@ -1,65 +0,0 @@
-/*
-** $Id: fallback.h,v 1.22 1997/04/04 22:24:51 roberto Exp roberto $
-*/
- 
-#ifndef fallback_h
-#define fallback_h
-
-#include "lua.h"
-#include "opcode.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
-
-
-extern struct IM {
-  TObject int_method[IM_N];
-} *luaI_IMtable;
-
-extern char *luaI_eventname[];
-
-#define luaI_getim(tag,event) (&luaI_IMtable[-(tag)].int_method[event])
-#define luaI_getimbyObj(o,e)  (luaI_getim(luaI_efectivetag(o),(e)))
-
-void luaI_setfallback (void);
-int luaI_ref (TObject *object, int lock);
-TObject *luaI_getref (int ref);
-void luaI_travlock (int (*fn)(TObject *));
-void luaI_invalidaterefs (void);
-char *luaI_travfallbacks (int (*fn)(TObject *));
-
-void luaI_settag (int tag, TObject *o);
-void luaI_realtag (int tag);
-TObject *luaI_geterrorim (void);
-int luaI_efectivetag (TObject *o);
-void luaI_settagmethod (void);
-void luaI_gettagmethod (void);
-void luaI_seterrormethod (void);
-void luaI_initfallbacks (void);
-
-#endif
-

func.c

@@ -1,166 +0,0 @@
-#include <string.h>
-
-#include "luadebug.h"
-#include "table.h"
-#include "luamem.h"
-#include "func.h"
-#include "opcode.h"
-#include "inout.h"
-
-
-static TFunc *function_root = NULL;
-static LocVar *currvars = NULL;
-static int numcurrvars = 0;
-static int maxcurrvars = 0;
-
-
-/*
-** Initialize TFunc struct
-*/
-void luaI_initTFunc (TFunc *f)
-{
-  f->next = NULL;
-  f->marked = 0;
-  f->size = 0;
-  f->code = NULL;
-  f->lineDefined = 0;
-  f->fileName = lua_parsedfile;
-  f->locvars = NULL;
-}
-
-/*
-** Insert function in list for GC
-*/
-void luaI_insertfunction (TFunc *f)
-{
-  lua_pack();
-  f->next = function_root;
-  function_root = f;
-  f->marked = 0;
-}
-
-
-/*
-** Free function
-*/
-void luaI_freefunc (TFunc *f)
-{
-  luaI_free (f->code);
-  luaI_free (f->locvars);
-  luaI_free (f);
-}
-
-
-void luaI_funcfree (TFunc *l)
-{
-  while (l) {
-    TFunc *next = l->next;
-    luaI_freefunc(l);
-    l = next;
-  }
-}
-
-/*
-** Garbage collection function.
-*/
-TFunc *luaI_funccollector (long *acum)
-{
-  TFunc *curr = function_root;
-  TFunc *prev = NULL;
-  TFunc *frees = NULL;
-  long counter = 0;
-  while (curr) {
-    TFunc *next = curr->next;
-    if (!curr->marked) {
-      if (prev == NULL)
-        function_root = next;
-      else
-        prev->next = next;
-      curr->next = frees;
-      frees = curr;
-      ++counter;
-    }
-    else {
-      curr->marked = 0;
-      prev = curr;
-    } 
-    curr = next;
-  }
-  *acum += counter;
-  return frees;
-}
-
-
-void lua_funcinfo (lua_Object func, char **filename, int *linedefined)
-{
-  TObject *f = luaI_Address(func);
-  if (f->ttype == LUA_T_MARK || f->ttype == LUA_T_FUNCTION)
-  {
-    *filename = f->value.tf->fileName;
-    *linedefined = f->value.tf->lineDefined;
-  }
-  else if (f->ttype == LUA_T_CMARK || f->ttype == LUA_T_CFUNCTION)
-  {
-    *filename = "(C)";
-    *linedefined = -1;
-  }
-}
-
-/*
-** Stores information to know that variable has been declared in given line
-*/
-void luaI_registerlocalvar (TaggedString *varname, int line)
-{
-  if (numcurrvars >= maxcurrvars)
-    maxcurrvars = growvector(&currvars, maxcurrvars, LocVar, "", MAX_WORD);
-  currvars[numcurrvars].varname = varname;
-  currvars[numcurrvars].line = line;
-  numcurrvars++;
-}
-
-/*
-** Stores information to know that variable has been out of scope in given line
-*/
-void luaI_unregisterlocalvar (int line)
-{
-  luaI_registerlocalvar(NULL, line);
-}
-
-/*
-** Copies "currvars" into a new area and store it in function header.
-** The values (varname = NULL, line = -1) signal the end of vector.
-*/
-void luaI_closelocalvars (TFunc *func)
-{
-  func->locvars = newvector (numcurrvars+1, LocVar);
-  memcpy (func->locvars, currvars, numcurrvars*sizeof(LocVar));
-  func->locvars[numcurrvars].varname = NULL;
-  func->locvars[numcurrvars].line = -1;
-  numcurrvars = 0;  /* prepares for next function */
-}
-
-/*
-** Look for n-esim local variable at line "line" in function "func".
-** Returns NULL if not found.
-*/
-char *luaI_getlocalname (TFunc *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;
-}
-

func.h

@@ -1,45 +0,0 @@
-/*
-** $Id: func.h,v 1.8 1996/03/14 15:54:20 roberto Exp roberto $
-*/
-
-#ifndef func_h
-#define func_h
-
-#include "types.h"
-#include "lua.h"
-#include "tree.h"
-
-typedef struct LocVar
-{
-  TaggedString *varname;           /* NULL signals end of scope */
-  int       line;
-} LocVar;
-
-
-/*
-** Function Headers
-*/
-typedef struct TFunc
-{
-  struct TFunc	*next;
-  int		marked;
-  int		size;
-  Byte		*code;
-  int		lineDefined;
-  char		*fileName;
-  LocVar        *locvars;
-} TFunc;
-
-TFunc *luaI_funccollector (long *cont);
-void luaI_funcfree (TFunc *l);
-void luaI_insertfunction (TFunc *f);
-
-void luaI_initTFunc (TFunc *f);
-void luaI_freefunc (TFunc *f);
-
-void luaI_registerlocalvar (TaggedString *varname, int line);
-void luaI_unregisterlocalvar (int line);
-void luaI_closelocalvars (TFunc *func);
-char *luaI_getlocalname (TFunc *func, int local_number, int line);
-
-#endif

hash.c

@@ -1,332 +0,0 @@
-/*
-** hash.c
-** hash manager for lua
-*/
-
-char *rcs_hash="$Id: hash.c,v 2.42 1997/05/08 20:43:30 roberto Exp roberto $";
-
-
-#include "luamem.h"
-#include "opcode.h"
-#include "hash.h"
-#include "table.h"
-#include "lua.h"
-#include "auxlib.h"
-
-
-#define nhash(t)	((t)->nhash)
-#define nuse(t)		((t)->nuse)
-#define markarray(t)    ((t)->mark)
-#define nodevector(t)	((t)->node)
-#define node(t,i)	(&(t)->node[i])
-#define ref(n)		(&(n)->ref)
-#define val(n)		(&(n)->val)
-
-
-#define REHASH_LIMIT    0.70    /* avoid more than this % full */
-
-#define TagDefault LUA_T_ARRAY;
-
-
-static Hash *listhead = 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 luaI_redimension (int nhash)
-{
- int i;
- for (i=0; dimensions[i]<MAX_INT; i++)
- {
-  if (dimensions[i] > nhash)
-   return dimensions[i];
- }
- lua_error("table overflow");
- return 0;  /* to avoid warnings */
-}
-
-
-int lua_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_FUNCTION: return t1->value.tf == t2->value.tf;
-    case LUA_T_CFUNCTION: return fvalue(t1) == fvalue(t2);
-    default:
-     lua_error("internal error in `lua_equalObj'");
-     return 0; /* UNREACHEABLE */
-  }
-}
-
-
-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 = tsvalue(ref)->hash; break;
-    case LUA_T_FUNCTION:
-      h = (IntPoint)ref->value.tf; break;
-    case LUA_T_CFUNCTION:
-      h = (IntPoint)fvalue(ref); break;
-    case LUA_T_ARRAY:
-      h = (IntPoint)avalue(ref); break;
-    default:
-      lua_error ("unexpected type to index table");
-      h = 0;  /* UNREACHEABLE */
-  }
-  if (h < 0) h = -h;
-  return h;
-}
-
-
-static int present (Hash *t, TObject *key)
-{
-  long int h = hashindex(key);
-  int tsize = nhash(t);
-  int h1 = h%tsize;
-  TObject *rf = ref(node(t, h1));
-  if (ttype(rf) != LUA_T_NIL && !lua_equalObj(key, rf)) {
-    int h2 = h%(tsize-2) + 1;
-    do {
-      h1 = (h1+h2)%tsize;
-      rf = ref(node(t, h1));
-    } while (ttype(rf) != LUA_T_NIL && !lua_equalObj(key, rf));
-  }
-  return h1;
-}
-
-
-/*
-** Alloc a vector node 
-*/
-static Node *hashnodecreate (int nhash)
-{
- int i;
- Node *v = newvector (nhash, Node);
- for (i=0; i<nhash; i++)
-   ttype(ref(&v[i])) = LUA_T_NIL;
- return v;
-}
-
-/*
-** Create a new hash. Return the hash pointer or NULL on error.
-*/
-static Hash *hashcreate (int nhash)
-{
- Hash *t = new(Hash);
- nhash = luaI_redimension((int)((float)nhash/REHASH_LIMIT));
- nodevector(t) = hashnodecreate(nhash);
- nhash(t) = nhash;
- nuse(t) = 0;
- markarray(t) = 0;
- t->htag = TagDefault;
- return t;
-}
-
-/*
-** Delete a hash
-*/
-static void hashdelete (Hash *t)
-{
- luaI_free (nodevector(t));
- luaI_free(t);
-}
-
-
-/*
-** Mark a hash and check its elements 
-*/
-void lua_hashmark (Hash *h)
-{
- if (markarray(h) == 0)
- {
-  int i;
-  markarray(h) = 1;
-  for (i=0; i<nhash(h); i++)
-  {
-   Node *n = node(h,i);
-   if (ttype(ref(n)) != LUA_T_NIL)
-   {
-    lua_markobject(&n->ref);
-    lua_markobject(&n->val);
-   }
-  }
- } 
-}
-
-
-void luaI_hashcallIM (Hash *l)
-{
-  TObject t;
-  ttype(&t) = LUA_T_ARRAY;
-  for (; l; l=l->next) {
-    avalue(&t) = l;
-    luaI_gcIM(&t);
-  }
-}
-
-
-void luaI_hashfree (Hash *frees)
-{
-  while (frees) {
-    Hash *next = frees->next;
-    hashdelete(frees);
-    frees = next;
-  }
-}
-
- 
-Hash *luaI_hashcollector (long *acum)
-{
-  Hash *curr_array = listhead, *prev = NULL, *frees = NULL;
-  long counter = 0;
-  while (curr_array != NULL) {
-    Hash *next = curr_array->next;
-    if (markarray(curr_array) != 1) {
-      if (prev == NULL)
-        listhead = next;
-      else
-        prev->next = next;
-      curr_array->next = frees;
-      frees = curr_array;
-      ++counter;
-    }
-    else {
-      markarray(curr_array) = 0;
-      prev = curr_array;
-    }
-    curr_array = next;
-  }
-  *acum += counter;
-  return frees;
-}
-
-
-/*
-** Create a new array
-** This function inserts the new array in the array list. It also
-** executes garbage collection if the number of arrays created
-** exceed a pre-defined range.
-*/
-Hash *lua_createarray (int nhash)
-{
- Hash *array;
- lua_pack();
- array = hashcreate(nhash);
- array->next = listhead;
- listhead = array;
- return array;
-}
-
-
-/*
-** 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) = luaI_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 new hash */
-  }
-  luaI_free(vold);
-}
-
-/*
-** If the hash node is present, return its pointer, otherwise return
-** null.
-*/
-TObject *lua_hashget (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 new
-** node for the given reference and also return its pointer.
-*/
-TObject *lua_hashdefine (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));
-}
-
-
-/*
-** 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.
-*/
-static void hashnext (Hash *t, int i)
-{
-  Node *n;
-  int tsize = nhash(t);
-  if (i >= tsize)
-    return;
-  n = node(t, i);
-  while (ttype(ref(n)) == LUA_T_NIL || ttype(val(n)) == LUA_T_NIL) {
-    if (++i >= tsize)
-      return;
-    n = node(t, i);
-  }
-  luaI_pushobject(ref(node(t,i)));
-  luaI_pushobject(val(node(t,i)));
-}
-
-void lua_next (void)
-{
-  Hash *t;
-  lua_Object o = lua_getparam(1);
-  lua_Object r = lua_getparam(2);
-  luaL_arg_check(lua_istable(o), 1, "table expected");
-  luaL_arg_check(r != LUA_NOOBJECT, 2, "value expected");
-  t = avalue(luaI_Address(o));
-  if (lua_isnil(r))
-    hashnext(t, 0);
-  else
-    hashnext(t, present(t, luaI_Address(r))+1);
-}

hash.h

@@ -1,39 +0,0 @@
-/*
-** hash.h
-** hash manager for lua
-** $Id: hash.h,v 2.15 1997/03/31 14:02:58 roberto Exp roberto $
-*/
-
-#ifndef hash_h
-#define hash_h
-
-#include "types.h"
-#include "opcode.h"
-
-typedef struct node {
- TObject ref;
- TObject val;
-} Node;
-
-typedef struct Hash {
-  struct Hash *next;
-  Node *node;
-  int nhash;
-  int nuse;
-  int htag;
-  char mark;
-} Hash;
-
-
-int      lua_equalObj (TObject *t1, TObject *t2);
-int      luaI_redimension (int nhash);
-Hash    *lua_createarray (int nhash);
-void     lua_hashmark (Hash *h);
-Hash    *luaI_hashcollector (long *count);
-void luaI_hashcallIM (Hash *l);
-void luaI_hashfree (Hash *frees);
-TObject  *lua_hashget (Hash *t, TObject *ref);
-TObject 	*lua_hashdefine (Hash *t, TObject *ref);
-void     lua_next (void);
-
-#endif

inout.c

@@ -1,408 +0,0 @@
-/*
-** inout.c
-** Provide function to realise the input/output function and debugger 
-** facilities.
-** Also provides some predefined lua functions.
-*/
-
-char *rcs_inout="$Id: inout.c,v 2.68 1997/06/26 20:47:43 roberto Exp roberto $";
-
-#include <stdio.h>
-#include <string.h>
-
-#include "auxlib.h"
-#include "fallback.h"
-#include "hash.h"
-#include "inout.h"
-#include "lex.h"
-#include "lua.h"
-#include "luamem.h"
-#include "luamem.h"
-#include "opcode.h"
-#include "table.h"
-#include "tree.h"
-#include "undump.h"
-#include "zio.h"
-
-
-/* Exported variables */
-Word lua_linenumber;
-char *lua_parsedfile;
-
-
-char *luaI_typenames[] = { /* ORDER LUA_T */
-  "userdata", "line", "cmark", "mark", "function",
-  "function", "table", "string", "number", "nil",
-  NULL
-};
-
-
-
-void luaI_setparsedfile (char *name)
-{
-  lua_parsedfile = luaI_createfixedstring(name)->str;
-}
-
-
-int lua_doFILE (FILE *f, int bin)
-{
-  ZIO z;
-  luaZ_Fopen(&z, f);
-  if (bin)
-    return luaI_undump(&z);
-  else {
-    lua_setinput(&z);
-    return lua_domain();
-  }
-}                      
-
-
-int lua_dofile (char *filename)
-{
-  int status;
-  int c;
-  FILE *f = (filename == NULL) ? stdin : fopen(filename, "r");
-  if (f == NULL)
-    return 2;
-  luaI_setparsedfile(filename?filename:"(stdin)");
-  c = fgetc(f);
-  ungetc(c, f);
-  if (c == ID_CHUNK) {
-    f = freopen(filename, "rb", f);  /* set binary mode */
-    status = lua_doFILE(f, 1);
-  }
-  else {
-    if (c == '#')
-      while ((c=fgetc(f)) != '\n') /* skip first line */;
-    status = lua_doFILE(f, 0);
-  }
-  if (f != stdin)
-    fclose(f);
-  return status;
-}                      
-
-
-
-#define SIZE_PREF 20  /* size of string prefix to appear in error messages */
-
-
-int lua_dobuffer (char *buff, int size)
-{
-  int status;
-  ZIO z;
-  luaI_setparsedfile("(buffer)");
-  luaZ_mopen(&z, buff, size);
-  status = luaI_undump(&z);
-  return status;
-}
-
-
-int lua_dostring (char *str)
-{
-  int status;
-  char buff[SIZE_PREF+25];
-  char *temp;
-  ZIO z;
-  if (str == NULL) return 1;
-  sprintf(buff, "(dostring) >> %.20s", str);
-  temp = strchr(buff, '\n');
-  if (temp) *temp = 0;  /* end string after first line */
-  luaI_setparsedfile(buff);
-  luaZ_sopen(&z, str);
-  lua_setinput(&z);
-  status = lua_domain();
-  return status;
-}
-
-
-
-
-static int passresults (void)
-{
-  int arg = 0;
-  lua_Object obj;
-  while ((obj = lua_getresult(++arg)) != LUA_NOOBJECT)
-    lua_pushobject(obj);
-  return arg-1;
-}
-
-
-static void packresults (void)
-{
-  int arg = 0;
-  lua_Object obj;
-  lua_Object table = lua_createtable();
-  while ((obj = lua_getresult(++arg)) != LUA_NOOBJECT) {
-    lua_pushobject(table);
-    lua_pushnumber(arg);
-    lua_pushobject(obj);
-    lua_rawsettable();
-  }
-  lua_pushobject(table);
-  lua_pushstring("n");
-  lua_pushnumber(arg-1);
-  lua_rawsettable();
-  lua_pushobject(table);  /* final result */
-}
- 
-/*
-** Internal function: do a string
-*/
-static void lua_internaldostring (void)
-{
-  lua_Object err = lua_getparam(2);
-  if (err != LUA_NOOBJECT) {  /* set new error method */
-    luaL_arg_check(lua_isnil(err) || lua_isfunction(err), 2,
-                   "must be a valid error handler");
-    lua_pushobject(err);
-    err = lua_seterrormethod();
-  }
-  if (lua_dostring(luaL_check_string(1)) == 0)
-    if (passresults() == 0)
-      lua_pushuserdata(NULL);  /* at least one result to signal no errors */
-  if (err != LUA_NOOBJECT) {  /* restore old error method */
-    lua_pushobject(err);
-    lua_seterrormethod();
-  }
-}
-
-/*
-** Internal function: do a file
-*/
-static void lua_internaldofile (void)
-{
- char *fname = luaL_opt_string(1, NULL);
- if (lua_dofile(fname) == 0)
-    if (passresults() == 0)
-      lua_pushuserdata(NULL);  /* at least one result to signal no errors */
-}
- 
-
-static char *tostring (lua_Object obj)
-{
-  TObject *o = luaI_Address(obj);
-  switch (ttype(o)) {
-    case LUA_T_NUMBER:  case LUA_T_STRING:
-      return lua_getstring(obj);
-    case LUA_T_ARRAY: case LUA_T_FUNCTION:
-    case LUA_T_CFUNCTION: case LUA_T_NIL:
-      return luaI_typenames[-ttype(o)];
-    case LUA_T_USERDATA: {
-      char *buff = luaI_buffer(30);
-      sprintf(buff, "userdata: %p", o->value.ts->u.v);
-      return buff;
-    }
-    default: return "<unknown object>";
-  }
-}
-
-static void luaI_tostring (void)
-{
-  lua_pushstring(tostring(lua_getparam(1)));
-}
-
-static void luaI_print (void)
-{
-  int i = 1;
-  lua_Object obj;
-  while ((obj = lua_getparam(i++)) != LUA_NOOBJECT)
-    printf("%s\n", tostring(obj));
-}
-
-static void luaI_type (void)
-{
-  lua_Object o = lua_getparam(1);
-  luaL_arg_check(o != LUA_NOOBJECT, 1, "no argument");
-  lua_pushstring(luaI_typenames[-ttype(luaI_Address(o))]);
-  lua_pushnumber(lua_tag(o));
-}
-
-/*
-** Internal function: convert an object to a number
-*/
-static void lua_obj2number (void)
-{
-  lua_Object o = lua_getparam(1);
-  if (lua_isnumber(o))
-    lua_pushnumber(lua_getnumber(o));
-}
-
-
-static void luaI_error (void)
-{
-  char *s = lua_getstring(lua_getparam(1));
-  if (s == NULL) s = "(no message)";
-  lua_error(s);
-}
-
-static void luaI_assert (void)
-{
-  lua_Object p = lua_getparam(1);
-  if (p == LUA_NOOBJECT || lua_isnil(p))
-    lua_error("assertion failed!");
-}
-
-static void luaI_setglobal (void)
-{
-  lua_Object value = lua_getparam(2);
-  luaL_arg_check(value != LUA_NOOBJECT, 2, NULL);
-  lua_pushobject(value);
-  lua_setglobal(luaL_check_string(1));
-  lua_pushobject(value);  /* return given value */
-}
-
-static void luaI_rawsetglobal (void)
-{
-  lua_Object value = lua_getparam(2);
-  luaL_arg_check(value != LUA_NOOBJECT, 2, NULL);
-  lua_pushobject(value);
-  lua_rawsetglobal(luaL_check_string(1));
-  lua_pushobject(value);  /* return given value */
-}
-
-static void luaI_getglobal (void)
-{
-  lua_pushobject(lua_getglobal(luaL_check_string(1)));
-}
-
-static void luaI_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_gettable();
-  return (lua_isnumber(temp) ? lua_getnumber(temp) : MAX_WORD);
-}
-
-static void luaI_call (void)
-{
-  lua_Object f = lua_getparam(1);
-  lua_Object arg = lua_getparam(2);
-  int withtable = (strcmp(luaL_opt_string(3, ""), "pack") == 0);
-  int narg, i;
-  luaL_arg_check(lua_isfunction(f), 1, "function expected");
-  luaL_arg_check(lua_istable(arg), 2, "table expected");
-  narg = getnarg(arg);
-  /* 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_gettable();
-    if (narg == MAX_WORD && lua_isnil(temp))
-      break;
-    lua_pushobject(temp);
-  }
-  if (lua_callfunction(f))
-    lua_error(NULL);
-  else if (withtable)
-    packresults();
-  else
-    passresults();
-}
-
-static void luaIl_settag (void)
-{
-  lua_Object o = lua_getparam(1);
-  luaL_arg_check(lua_istable(o), 1, "table expected");
-  lua_pushobject(o);
-  lua_settag(luaL_check_number(2));
-}
-
-static void luaIl_newtag (void)
-{
-  lua_pushnumber(lua_newtag());
-}
-
-static void rawgettable (void)
-{
-  lua_Object t = lua_getparam(1);
-  lua_Object i = lua_getparam(2);
-  luaL_arg_check(t != LUA_NOOBJECT, 1, NULL);
-  luaL_arg_check(i != LUA_NOOBJECT, 2, NULL);
-  lua_pushobject(t);
-  lua_pushobject(i);
-  lua_pushobject(lua_rawgettable());
-}
-
-static void rawsettable (void)
-{
-  lua_Object t = lua_getparam(1);
-  lua_Object i = lua_getparam(2);
-  lua_Object v = lua_getparam(3);
-  luaL_arg_check(t != LUA_NOOBJECT && i != LUA_NOOBJECT && v != LUA_NOOBJECT,
-                 0, NULL);
-  lua_pushobject(t);
-  lua_pushobject(i);
-  lua_pushobject(v);
-  lua_rawsettable();
-}
-
-
-static void luaI_collectgarbage (void)
-{
-  lua_pushnumber(lua_collectgarbage(luaL_opt_number(1, 0)));
-}
-
-
-/*
-** Internal functions
-*/
-static struct {
-  char *name;
-  lua_CFunction func;
-} int_funcs[] = {
-  {"assert", luaI_assert},
-  {"call", luaI_call},
-  {"collectgarbage", luaI_collectgarbage},
-  {"dofile", lua_internaldofile},
-  {"dostring", lua_internaldostring},
-  {"error", luaI_error},
-  {"getglobal", luaI_getglobal},
-  {"newtag", luaIl_newtag},
-  {"next", lua_next},
-  {"nextvar", luaI_nextvar},
-  {"print", luaI_print},
-  {"rawgetglobal", luaI_rawgetglobal},
-  {"rawgettable", rawgettable},
-  {"rawsetglobal", luaI_rawsetglobal},
-  {"rawsettable", rawsettable},
-  {"seterrormethod", luaI_seterrormethod},
-#if LUA_COMPAT2_5
-  {"setfallback", luaI_setfallback},
-#endif
-  {"setglobal", luaI_setglobal},
-  {"settagmethod", luaI_settagmethod},
-  {"gettagmethod", luaI_gettagmethod},
-  {"settag", luaIl_settag},
-  {"tonumber", lua_obj2number},
-  {"tostring", luaI_tostring},
-  {"tag", luatag},
-  {"type", luaI_type}
-};
-
-#define INTFUNCSIZE (sizeof(int_funcs)/sizeof(int_funcs[0]))
-
-
-void luaI_predefine (void)
-{
-  int i;
-  Word n;
-  for (i=0; i<INTFUNCSIZE; i++) {
-    n = luaI_findsymbolbyname(int_funcs[i].name);
-    s_ttype(n) = LUA_T_CFUNCTION; s_fvalue(n) = int_funcs[i].func;
-  }
-  n = luaI_findsymbolbyname("_VERSION");
-  s_ttype(n) = LUA_T_STRING; s_tsvalue(n) = lua_createstring(LUA_VERSION);
-}
-
-

inout.h

@@ -1,25 +0,0 @@
-/*
-** $Id: inout.h,v 1.19 1997/06/18 20:35:49 roberto Exp roberto $
-*/
-
-
-#ifndef inout_h
-#define inout_h
-
-#include "types.h"
-#include <stdio.h>
-
-
-extern Word lua_linenumber;
-extern Word lua_debugline;
-extern char *lua_parsedfile;
-
-void luaI_setparsedfile (char *name);
-
-void luaI_predefine (void);
-
-int lua_dobuffer (char *buff, int size);
-int lua_doFILE (FILE *f, int bin);
-
-
-#endif

iolib.c

@@ -1,330 +0,0 @@
-#include <stdio.h>
-#include <string.h>
-#include <time.h>
-#include <stdlib.h>
-#include <errno.h>
-
-#include "lua.h"
-#include "auxlib.h"
-#include "luadebug.h"
-#include "lualib.h"
-
-
-int lua_tagio;
-
-
-#ifdef POPEN
-FILE *popen();
-int pclose();
-#else
-#define popen(x,y) NULL  /* that is, popen always fails */
-#define pclose(x)  (-1)
-#endif
-
-
-static void pushresult (int i)
-{
-  if (i)
-    lua_pushuserdata(NULL);
-  else {
-    lua_pushnil();
-#ifndef NOSTRERROR
-    lua_pushstring(strerror(errno));
-#else
-    lua_pushstring("O.S. unable to define the error");
-#endif
-  }
-}
-
-
-
-static FILE *getfile (char *name)
-{
-  lua_Object f = lua_getglobal(name);
-  if (!lua_isuserdata(f) || lua_tag(f) != lua_tagio)
-    luaL_verror("global variable %s is not a file handle", name);
-  return lua_getuserdata(f);
-}
-
-
-static void closefile (char *name)
-{
-  FILE *f = getfile(name);
-  if (f == stdin || f == stdout) return;
-  if (pclose(f) == -1)
-    fclose(f);
-}
-
-
-static void setfile (FILE *f, char *name)
-{
-  lua_pushusertag(f, lua_tagio);
-  lua_setglobal(name);
-}
-
-
-static void setreturn (FILE *f, char *name)
-{
-  setfile(f, name);
-  lua_pushusertag(f, lua_tagio);
-}
-
-
-static void io_readfrom (void)
-{
-  FILE *current;
-  lua_Object f = lua_getparam(1);
-  if (f == LUA_NOOBJECT) {
-    closefile("_INPUT");
-    current = stdin;
-  }
-  else if (lua_tag(f) == lua_tagio)
-    current = lua_getuserdata(f);
-  else {
-    char *s = luaL_check_string(1);
-    current = (*s == '|') ? popen(s+1, "r") : fopen(s, "r");
-    if (current == NULL) {
-      pushresult(0);
-      return;
-    }
-  }
-  setreturn(current, "_INPUT");
-}
-
-
-static void io_writeto (void)
-{
-  FILE *current;
-  lua_Object f = lua_getparam(1);
-  if (f == LUA_NOOBJECT) {
-    closefile("_OUTPUT");
-    current = stdout;
-  }
-  else if (lua_tag(f) == lua_tagio)
-    current = lua_getuserdata(f);
-  else {
-    char *s = luaL_check_string(1);
-    current = (*s == '|') ? popen(s+1,"w") : fopen(s,"w");
-    if (current == NULL) {
-      pushresult(0);
-      return;
-    }
-  }
-  setreturn(current, "_OUTPUT");
-}
-
-
-static void io_appendto (void)
-{
-  char *s = luaL_check_string(1);
-  FILE *fp = fopen (s, "a");
-  if (fp != NULL)
-    setreturn(fp, "_OUTPUT");
-  else
-    pushresult(0);
-}
-
-
-#define NEED_OTHER (EOF-1)  /* just some flag different from EOF */
-
-static void io_read (void)
-{
-  FILE *f = getfile("_INPUT");
-  char *buff;
-  char *p = luaL_opt_string(1, "[^\n]*{\n}");
-  int inskip = 0;  /* to control {skips} */
-  int c = NEED_OTHER;
-  luaI_emptybuff();
-  while (*p) {
-    if (*p == '{') {
-      inskip++;
-      p++;
-    }
-    else if (*p == '}') {
-      if (inskip == 0)
-        lua_error("unbalanced braces in read pattern");
-      inskip--;
-      p++;
-    }
-    else {
-      char *ep = luaL_item_end(p);  /* get what is next */
-      int m;  /* match result */
-      if (c == NEED_OTHER) c = getc(f);
-      m = (c == EOF) ? 0 : luaL_singlematch((char)c, p);
-      if (m) {
-        if (inskip == 0) luaI_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);
-  buff = luaI_addchar(0);
-  if (*buff != 0 || *p == 0)  /* read something or did not fail? */
-    lua_pushstring(buff);
-}
-
-
-static void io_write (void)
-{
-  FILE *f = getfile("_OUTPUT");
-  int arg = 1;
-  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 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[] = {
-{"readfrom", io_readfrom},
-{"writeto",  io_writeto},
-{"appendto", io_appendto},
-{"read",     io_read},
-{"write",    io_write},
-{"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}
-};
-
-void iolib_open (void)
-{
-  lua_tagio = lua_newtag();
-  setfile(stdin, "_INPUT");
-  setfile(stdout, "_OUTPUT");
-  setfile(stdin, "_STDIN");
-  setfile(stdout, "_STDOUT");
-  setfile(stderr, "_STDERR");
-  luaL_openlib(iolib, (sizeof(iolib)/sizeof(iolib[0])));
-  lua_pushcfunction(errorfb);
-  lua_seterrormethod();
-}

lapi.c

@@ -0,0 +1,700 @@
+/*
+** $Id: lapi.c,v 1.41 1999/03/04 21:17:26 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 " $\n"
+                   "$Authors:  " LUA_AUTHORS " $";
+
+
+
+TObject *luaA_Address (lua_Object o) {
+  return (o != LUA_NOOBJECT) ?  Address(o) : NULL;
+}
+
+
+static lua_Type 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) {
+  L->Cstack.base = L->Cstack.lua2C;  /* position of first result */
+  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) */
+}
+
+
+static void top2LC (int n) {
+  /* Put the 'n' elements on the top as the Lua2C contents */
+  L->Cstack.base = (L->stack.top-L->stack.stack);  /* new base */
+  L->Cstack.lua2C = L->Cstack.base-n;  /* position of the new results */
+  L->Cstack.num = n;  /* number of results */
+}
+
+
+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) {
+  lua_Object temp;
+  checkCparams(1);
+  temp = lua_getglobal("_ERRORMESSAGE");
+  lua_setglobal("_ERRORMESSAGE");
+  return 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 {
+    *(L->stack.top-2) = *luaH_get(avalue(L->stack.top-2), L->stack.top-1);
+    --L->stack.top;
+  }
+  return put_luaObjectonTop();
+}
+
+
+void lua_settable (void) {
+  checkCparams(3);
+  luaV_settable(L->stack.top-3);
+  L->stack.top -= 2;  /* pop table and index */
+}
+
+
+void lua_rawsettable (void) {
+  checkCparams(3);
+  luaV_rawsettable(L->stack.top-3);
+}
+
+
+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.s.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)
+{
+  luaC_checkGC();  /* "tostring" may create a new string */
+  if (object == LUA_NOOBJECT || tostring(Address(object)))
+    return NULL;
+  else return (svalue(Address(object)));
+}
+
+long lua_strlen (lua_Object object)
+{
+  luaC_checkGC();  /* "tostring" may create a new string */
+  if (object == LUA_NOOBJECT || tostring(Address(object)))
+    return 0L;
+  else return (tsvalue(Address(object))->u.s.len);
+}
+
+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_pushlstring (char *s, long len)
+{
+  tsvalue(L->stack.top) = luaS_newlstr(s, len);
+  ttype(L->stack.top) = LUA_T_STRING;
+  incr_top;
+  luaC_checkGC();
+}
+
+void lua_pushstring (char *s)
+{
+  if (s == NULL)
+    lua_pushnil();
+  else
+    lua_pushlstring(s, strlen(s));
+}
+
+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);
+  luaC_checkGC();
+}
+
+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_INTERNALERROR("invalid type");
+#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_typename(L->stack.top-1));
+  }
+  L->stack.top--;
+}
+
+
+TaggedString *luaA_nextvar (TaggedString *g) {
+  if (g == NULL)
+    g = (TaggedString *)L->rootglobal.next;  /* first variable */
+  else {
+    /* 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;  /* get next */
+  }
+  while (g && g->u.s.globalval.ttype == LUA_T_NIL)  /* skip globals with nil */
+    g = (TaggedString *)g->head.next;
+  if (g) {
+    ttype(L->stack.top) = LUA_T_STRING; tsvalue(L->stack.top) = g;
+    incr_top;
+    luaA_pushobject(&g->u.s.globalval);
+  }
+  return g;
+}
+
+
+char *lua_nextvar (char *varname) {
+  TaggedString *g = (varname == NULL) ? NULL : luaS_new(varname);
+  g = luaA_nextvar(g);
+  if (g) {
+    top2LC(2);
+    return g->str;
+  }
+  else {
+    top2LC(0);
+    return NULL;
+  }
+}
+
+
+int luaA_next (Hash *t, int i) {
+  int tsize = nhash(t);
+  for (; i<tsize; i++) {
+    Node *n = node(t, i);
+    if (ttype(val(n)) != LUA_T_NIL) {
+      luaA_pushobject(ref(n));
+      luaA_pushobject(val(n));
+      return i+1;  /* index to be used next time */
+    }
+  }
+  return 0;  /* no more elements */
+}
+
+
+int lua_next (lua_Object o, int i) {
+  TObject *t = Address(o);
+  if (ttype(t) != LUA_T_ARRAY)
+    lua_error("API error - object is not a table in `lua_next'"); 
+  i = luaA_next(avalue(t), i);
+  top2LC((i==0) ? 0 : 2);
+  return i;
+}
+
+
+
+/*
+** {======================================================
+** To manipulate some state information
+** =======================================================
+*/
+
+lua_State *lua_setstate (lua_State *st) {
+  lua_State *old = lua_state;
+  lua_state = st;
+  return old;
+}
+
+lua_LHFunction lua_setlinehook (lua_LHFunction func) {
+  lua_LHFunction old = L->linehook;
+  L->linehook = func;
+  return old;
+}
+
+lua_CHFunction lua_setcallhook (lua_CHFunction func) {
+  lua_CHFunction old = L->callhook;
+  L->callhook = func;
+  return old;
+}
+
+int lua_setdebug (int debug) {
+  int old = L->debug;
+  L->debug = debug;
+  return old;
+}
+
+/* }====================================================== */
+
+
+/*
+** {======================================================
+** Debug interface
+** =======================================================
+*/
+
+
+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_nups (lua_Function func) {
+  TObject *o = luaA_Address(func);
+  return (!o || normalized_type(o) != LUA_T_CLOSURE) ? 0 : o->value.cl->nelems;
+}
+
+
+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 put_luaObject((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 **source, 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) {
+      *source = tfvalue(f)->source->str;
+      *linedefined = tfvalue(f)->lineDefined;
+    }
+    else {
+      *source = "(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 = luaS_travsymbol(checkfunc)) != NULL)
+    return "global";
+  else if ((*name = luaT_travtagmethods(checkfunc)) != NULL)
+    return "tag-method";
+  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
+

lapi.h

@@ -0,0 +1,22 @@
+/*
+** $Id: lapi.h,v 1.3 1999/02/22 19:13:12 roberto Exp roberto $
+** Auxiliary 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);
+TaggedString *luaA_nextvar (TaggedString *g);
+int luaA_next (Hash *t, int i);
+
+#endif

lauxlib.c

@@ -0,0 +1,133 @@
+/*
+** $Id: lauxlib.c,v 1.16 1999/03/10 14:19:41 roberto Exp roberto $
+** Auxiliary functions for building Lua libraries
+** See Copyright Notice in lua.h
+*/
+
+
+#include <stdarg.h>
+#include <stdio.h>
+#include <string.h>
+
+/* Please Notice: This file uses only the official 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"
+
+
+
+int luaL_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 luaL_argerror (int numarg, char *extramsg) {
+  lua_Function f = lua_stackedfunction(0);
+  char *funcname;
+  lua_getobjname(f, &funcname);
+  numarg -= lua_nups(f);
+  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_lstr (int numArg, long *len)
+{
+  lua_Object o = lua_getparam(numArg);
+  luaL_arg_check(lua_isstring(o), numArg, "string expected");
+  if (len) *len = lua_strlen(o);
+  return lua_getstring(o);
+}
+
+char *luaL_opt_lstr (int numArg, char *def, long *len)
+{
+  return (lua_getparam(numArg) == LUA_NOOBJECT) ? def :
+                              luaL_check_lstr(numArg, len);
+}
+
+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);
+}
+
+
+void luaL_chunkid (char *out, char *source, int len) {
+  len -= 13;  /* 13 = strlen("string ''...\0") */
+  if (*source == '@')
+    sprintf(out, "file `%.*s'", len, source+1);
+  else if (*source == '(')
+    strcpy(out, "(C code)");
+  else {
+    char *b = strchr(source , '\n');  /* stop string at first new line */
+    int lim = (b && (b-source)<len) ? b-source : len;
+    sprintf(out, "string `%.*s'", lim, source);
+    strcpy(out+lim+(13-5), "...'");  /* 5 = strlen("...'\0") */
+  }
+}
+
+
+void luaL_filesource (char *out, char *filename, int len) {
+  if (filename == NULL) filename = "(stdin)";
+  sprintf(out, "@%.*s", len-2, filename);  /* -2 for '@' and '\0' */
+}

lauxlib.h

@@ -0,0 +1,53 @@
+/*
+** $Id: lauxlib.h,v 1.11 1999/03/04 21:17:26 roberto Exp roberto $
+** Auxiliary 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);
+#define luaL_check_string(n)  (luaL_check_lstr((n), NULL))
+char *luaL_check_lstr (int numArg, long *len);
+#define luaL_opt_string(n, d) (luaL_opt_lstr((n), (d), NULL))
+char *luaL_opt_lstr (int numArg, char *def, long *len);
+double luaL_check_number (int numArg);
+#define luaL_check_int(n)	((int)luaL_check_number(n))
+#define luaL_check_long(n)	((long)luaL_check_number(n))
+double luaL_opt_number (int numArg, double def);
+#define luaL_opt_int(n,d)	((int)luaL_opt_number(n,d))
+#define luaL_opt_long(n,d)	((long)luaL_opt_number(n,d))
+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);
+int luaL_getsize (void);
+void luaL_addsize (int n);
+int luaL_newbuffer (int size);
+void luaL_oldbuffer (int old);
+char *luaL_buffer (void);
+int luaL_findstring (char *name, char *list[]);
+void luaL_chunkid (char *out, char *source, int len);
+void luaL_filesource (char *out, char *filename, int len);
+
+
+#endif

lbuffer.c

@@ -0,0 +1,75 @@
+/*
+** $Id: lbuffer.c,v 1.8 1999/02/25 19:20:40 roberto Exp roberto $
+** Auxiliary functions for building Lua libraries
+** See Copyright Notice in lua.h
+*/
+
+
+#include <stdio.h>
+
+#include "lauxlib.h"
+#include "lmem.h"
+#include "lstate.h"
+
+
+/*-------------------------------------------------------
+**  Auxiliary buffer
+-------------------------------------------------------*/
+
+
+#define EXTRABUFF	32
+
+
+#define openspace(size)  if (L->Mbuffnext+(size) > L->Mbuffsize) Openspace(size)
+
+static void Openspace (int size) {
+  lua_State *l = L;  /* to optimize */
+  size += EXTRABUFF;
+  l->Mbuffsize = l->Mbuffnext+size;
+  luaM_growvector(l->Mbuffer, l->Mbuffnext, size, char, arrEM, MAX_INT);
+}
+
+
+char *luaL_openspace (int size) {
+  openspace(size);
+  return L->Mbuffer+L->Mbuffnext;
+}
+
+
+void luaL_addchar (int c) {
+  openspace(1);
+  L->Mbuffer[L->Mbuffnext++] = (char)c;
+}
+
+
+void luaL_resetbuffer (void) {
+  L->Mbuffnext = L->Mbuffbase;
+}
+
+
+void luaL_addsize (int n) {
+  L->Mbuffnext += n;
+}
+
+int luaL_getsize (void) {
+  return L->Mbuffnext-L->Mbuffbase;
+}
+
+int luaL_newbuffer (int size) {
+  int old = L->Mbuffbase;
+  openspace(size);
+  L->Mbuffbase = L->Mbuffnext;
+  return old;
+}
+
+
+void luaL_oldbuffer (int old) {
+  L->Mbuffnext = L->Mbuffbase;
+  L->Mbuffbase = old;
+}
+
+
+char *luaL_buffer (void) {
+  return L->Mbuffer+L->Mbuffbase;
+}
+

lbuiltin.c

@@ -0,0 +1,726 @@
+/*
+** $Id: lbuiltin.c,v 1.55 1999/03/01 20:22:16 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"
+#include "lundump.h"
+#include "lvm.h"
+
+
+
+/*
+** {======================================================
+** Auxiliary functions
+** =======================================================
+*/
+
+
+static void pushtagstring (TaggedString *s) {
+  TObject o;
+  o.ttype = LUA_T_STRING;
+  o.value.ts = s;
+  luaA_pushobject(&o);
+}
+
+
+static real getsize (Hash *h) {
+  real max = 0;
+  int i;
+  for (i = 0; i<nhash(h); i++) {
+    Node *n = h->node+i;
+    if (ttype(ref(n)) == LUA_T_NUMBER && 
+        ttype(val(n)) != LUA_T_NIL &&
+        nvalue(ref(n)) > max)
+      max = nvalue(ref(n));
+  }
+  return max;
+}
+
+
+static real getnarg (Hash *a) {
+  TObject index;
+  TObject *value;
+  /* value = table.n */
+  ttype(&index) = LUA_T_STRING;
+  tsvalue(&index) = luaS_new("n");
+  value = luaH_get(a, &index);
+  return (ttype(value) == LUA_T_NUMBER) ? nvalue(value) : getsize(a);
+}
+
+
+static Hash *gethash (int arg) {
+  return avalue(luaA_Address(luaL_tablearg(arg)));
+}
+
+/* }====================================================== */
+
+
+/*
+** {======================================================
+** Functions that use only the official API
+** =======================================================
+*/
+
+
+/*
+** If your system does not support "stderr", redefine this function, or
+** redefine _ERRORMESSAGE so that it won't need _ALERT.
+*/
+static void luaB_alert (void) {
+  fputs(luaL_check_string(1), stderr);
+}
+
+
+/*
+** Standard implementation of _ERRORMESSAGE.
+** The library "iolib" redefines _ERRORMESSAGE for better error information.
+*/
+static void error_message (void) {
+  lua_Object al = lua_rawgetglobal("_ALERT");
+  if (lua_isfunction(al)) {  /* avoid error loop if _ALERT is not defined */
+    char buff[600];
+    sprintf(buff, "lua error: %.500s\n", luaL_check_string(1));
+    lua_pushstring(buff);
+    lua_callfunction(al);
+  }
+}
+
+
+/*
+** If your system does not support "stdout", just remove this function.
+** If you need, you can define your own "print" function, following this
+** model but changing "fputs" to put the strings at a proper place
+** (a console window or a log file, for instance).
+*/
+#define MAXPRINT	40
+static void luaB_print (void) {
+  lua_Object args[MAXPRINT];
+  lua_Object obj;
+  int n = 0;
+  int i;
+  while ((obj = lua_getparam(n+1)) != LUA_NOOBJECT) {
+    luaL_arg_check(n < MAXPRINT, n+1, "too many arguments");
+    args[n++] = obj;
+  }
+  for (i=0; i<n; i++) {
+    lua_pushobject(args[i]);
+    if (lua_call("tostring"))
+      lua_error("error in `tostring' called by `print'");
+    obj = lua_getresult(1);
+    if (!lua_isstring(obj))
+      lua_error("`tostring' must return a string to `print'");
+    if (i>0) fputs("\t", stdout);
+    fputs(lua_getstring(obj), stdout);
+  }
+  fputs("\n", stdout);
+}
+
+
+static void luaB_tonumber (void) {
+  int base = luaL_opt_int(2, 10);
+  if (base == 10) {  /* standard conversion */
+    lua_Object o = lua_getparam(1);
+    if (lua_isnumber(o)) lua_pushnumber(lua_getnumber(o));
+    else lua_pushnil();  /* not a number */
+  }
+  else {
+    char *s = luaL_check_string(1);
+    long n;
+    luaL_arg_check(0 <= base && base <= 36, 2, "base out of range");
+    n = strtol(s, &s, base);
+    while (isspace((unsigned char)*s)) s++;  /* skip trailing spaces */
+    if (*s) lua_pushnil();  /* invalid format: return nil */
+    else lua_pushnumber(n);
+  }
+}
+
+
+static void luaB_error (void) {
+  lua_error(lua_getstring(lua_getparam(1)));
+}
+
+static void luaB_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 luaB_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 luaB_getglobal (void) {
+  lua_pushobject(lua_getglobal(luaL_check_string(1)));
+}
+
+static void luaB_rawgetglobal (void) {
+  lua_pushobject(lua_rawgetglobal(luaL_check_string(1)));
+}
+
+static void luaB_luatag (void) {
+  lua_pushnumber(lua_tag(lua_getparam(1)));
+}
+
+static void luaB_settag (void) {
+  lua_Object o = luaL_tablearg(1);
+  lua_pushobject(o);
+  lua_settag(luaL_check_int(2));
+  lua_pushobject(o);  /* return first argument */
+}
+
+static void luaB_newtag (void) {
+  lua_pushnumber(lua_newtag());
+}
+
+static void luaB_copytagmethods (void) {
+  lua_pushnumber(lua_copytagmethods(luaL_check_int(1),
+                                    luaL_check_int(2)));
+}
+
+static void luaB_rawgettable (void) {
+  lua_pushobject(luaL_nonnullarg(1));
+  lua_pushobject(luaL_nonnullarg(2));
+  lua_pushobject(lua_rawgettable());
+}
+
+static void luaB_rawsettable (void) {
+  lua_pushobject(luaL_nonnullarg(1));
+  lua_pushobject(luaL_nonnullarg(2));
+  lua_pushobject(luaL_nonnullarg(3));
+  lua_rawsettable();
+}
+
+static void luaB_settagmethod (void) {
+  lua_Object nf = luaL_nonnullarg(3);
+  lua_pushobject(nf);
+  lua_pushobject(lua_settagmethod(luaL_check_int(1), luaL_check_string(2)));
+}
+
+static void luaB_gettagmethod (void) {
+  lua_pushobject(lua_gettagmethod(luaL_check_int(1), luaL_check_string(2)));
+}
+
+static void luaB_seterrormethod (void) {
+  lua_Object nf = luaL_functionarg(1);
+  lua_pushobject(nf);
+  lua_pushobject(lua_seterrormethod());
+}
+
+static void luaB_collectgarbage (void) {
+  lua_pushnumber(lua_collectgarbage(luaL_opt_int(1, 0)));
+}
+
+/* }====================================================== */
+
+
+/*
+** {======================================================
+** Functions that could use only the official API but
+** do not, for efficiency.
+** =======================================================
+*/
+
+static void luaB_dostring (void) {
+  long l;
+  char *s = luaL_check_lstr(1, &l);
+  if (*s == ID_CHUNK)
+    lua_error("`dostring' cannot run pre-compiled code");
+  if (lua_dobuffer(s, l, luaL_opt_string(2, s)) == 0)
+    if (luaA_passresults() == 0)
+      lua_pushuserdata(NULL);  /* at least one result to signal no errors */
+}
+
+
+static void luaB_dofile (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 void luaB_call (void) {
+  lua_Object f = luaL_nonnullarg(1);
+  Hash *arg = gethash(2);
+  char *options = luaL_opt_string(3, "");
+  lua_Object err = lua_getparam(4);
+  int narg = (int)getnarg(arg);
+  int i, status;
+  if (err != LUA_NOOBJECT) {  /* set new error method */
+    lua_pushobject(err);
+    err = lua_seterrormethod();
+  }
+  /* push arg[1...n] */
+  luaD_checkstack(narg);
+  for (i=0; i<narg; i++)
+    *(L->stack.top++) = *luaH_getint(arg, i+1);
+  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')) {
+      lua_pushnil();
+      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 luaB_nextvar (void) {
+  TObject *o = luaA_Address(luaL_nonnullarg(1));
+  TaggedString *g;
+  if (ttype(o) == LUA_T_NIL)
+    g = NULL;
+  else {
+    luaL_arg_check(ttype(o) == LUA_T_STRING, 1, "variable name expected");
+    g = tsvalue(o);
+  }
+  if (!luaA_nextvar(g))
+    lua_pushnil();
+}
+
+
+static void luaB_next (void) {
+  Hash *a = gethash(1);
+  TObject *k = luaA_Address(luaL_nonnullarg(2));
+  int i = (ttype(k) == LUA_T_NIL) ? 0 : luaH_pos(a, k)+1;
+  if (luaA_next(a, i) == 0)
+    lua_pushnil();
+}
+
+
+static void luaB_tostring (void) {
+  lua_Object obj = lua_getparam(1);
+  TObject *o = luaA_Address(obj);
+  char buff[64];
+  switch (ttype(o)) {
+    case LUA_T_NUMBER:
+      lua_pushstring(lua_getstring(obj));
+      return;
+    case LUA_T_STRING:
+      lua_pushobject(obj);
+      return;
+    case LUA_T_ARRAY:
+      sprintf(buff, "table: %p", (void *)o->value.a);
+      break;
+    case LUA_T_CLOSURE:
+      sprintf(buff, "function: %p", (void *)o->value.cl);
+      break;
+    case LUA_T_PROTO:
+      sprintf(buff, "function: %p", (void *)o->value.tf);
+      break;
+    case LUA_T_CPROTO:
+      sprintf(buff, "function: %p", (void *)o->value.f);
+      break;
+    case LUA_T_USERDATA:
+      sprintf(buff, "userdata: %p", o->value.ts->u.d.v);
+      break;
+    case LUA_T_NIL:
+      lua_pushstring("nil");
+      return;
+    default:
+      LUA_INTERNALERROR("invalid type");
+  }
+  lua_pushstring(buff);
+}
+
+
+static void luaB_type (void) {
+  lua_Object o = luaL_nonnullarg(1);
+  lua_pushstring(luaO_typename(luaA_Address(o)));
+  lua_pushnumber(lua_tag(o));
+}
+
+/* }====================================================== */
+
+
+
+/*
+** {======================================================
+** "Extra" functions
+** These functions can be written in Lua, so you can
+**  delete them if you need a tiny Lua implementation.
+** If you delete them, remove their entries in array
+** "builtin_funcs".
+** =======================================================
+*/
+
+static void luaB_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 luaB_foreachi (void) {
+  Hash *t = gethash(1);
+  TObject *f = luaA_Address(luaL_functionarg(2));
+  int i;
+  int n = (int)getnarg(t);
+  luaD_checkstack(3);  /* for f, ref, and val */
+  for (i=1; i<=n; i++) {
+    *(L->stack.top++) = *f;
+    ttype(L->stack.top) = LUA_T_NUMBER; nvalue(L->stack.top++) = i;
+    *(L->stack.top++) = *luaH_getint(t, i);
+    luaD_calln(2, 1);
+    if (ttype(L->stack.top-1) != LUA_T_NIL)
+      return;
+    L->stack.top--;
+  }
+}
+
+
+static void luaB_foreach (void) {
+  Hash *a = gethash(1);
+  TObject *f = luaA_Address(luaL_functionarg(2));
+  int i;
+  luaD_checkstack(3);  /* for f, ref, and val */
+  for (i=0; i<a->nhash; i++) {
+    Node *nd = &(a->node[i]);
+    if (ttype(val(nd)) != LUA_T_NIL) {
+      *(L->stack.top++) = *f;
+      *(L->stack.top++) = *ref(nd);
+      *(L->stack.top++) = *val(nd);
+      luaD_calln(2, 1);
+      if (ttype(L->stack.top-1) != LUA_T_NIL)
+        return;
+      L->stack.top--;  /* remove result */
+    }
+  }
+}
+
+
+static void luaB_foreachvar (void) {
+  TObject *f = luaA_Address(luaL_functionarg(1));
+  GCnode *g;
+  luaD_checkstack(4);  /* for extra var name, f, var name, and globalval */
+  for (g = L->rootglobal.next; g; g = g->next) {
+    TaggedString *s = (TaggedString *)g;
+    if (s->u.s.globalval.ttype != LUA_T_NIL) {
+      pushtagstring(s);  /* keep (extra) s on stack to avoid GC */
+      *(L->stack.top++) = *f;
+      pushtagstring(s);
+      *(L->stack.top++) = s->u.s.globalval;
+      luaD_calln(2, 1);
+      if (ttype(L->stack.top-1) != LUA_T_NIL) {
+        L->stack.top--;
+        *(L->stack.top-1) = *L->stack.top;  /* remove extra s */
+        return;
+      }
+      L->stack.top-=2;  /* remove result and extra s */
+    }
+  }
+}
+
+
+static void luaB_getn (void) {
+  lua_pushnumber(getnarg(gethash(1)));
+}
+
+
+static void luaB_tinsert (void) {
+  Hash *a = gethash(1);
+  lua_Object v = lua_getparam(3);
+  int n = (int)getnarg(a);
+  int pos;
+  if (v != LUA_NOOBJECT)
+    pos = luaL_check_int(2);
+  else {  /* called with only 2 arguments */
+    v = luaL_nonnullarg(2);
+    pos = n+1;
+  }
+  luaV_setn(a, n+1);  /* increment field "n" */
+  for ( ;n>=pos; n--)
+    luaH_move(a, n, n+1);
+  luaH_setint(a, pos, luaA_Address(v));
+}
+
+
+static void luaB_tremove (void) {
+  Hash *a = gethash(1);
+  int n = (int)getnarg(a);
+  int pos = luaL_opt_int(2, n);
+  if (n <= 0) return;  /* table is "empty" */
+  luaA_pushobject(luaH_getint(a, pos));  /* push result */
+  luaV_setn(a, n-1);  /* decrement field "n" */
+  for ( ;pos<n; pos++)
+    luaH_move(a, pos+1, pos);
+}
+
+
+/* {
+** Quicksort
+*/
+
+static void swap (Hash *a, int i, int j) {
+  TObject temp;
+  temp = *luaH_getint(a, i);
+  luaH_move(a, j, i);
+  luaH_setint(a, j, &temp);
+}
+
+static int sort_comp (TObject *f, TObject *a, TObject *b) {
+  /* notice: the caller (auxsort) must check stack space */
+  if (f) {
+    *(L->stack.top) = *f;
+    *(L->stack.top+1) = *a;
+    *(L->stack.top+2) = *b;
+    L->stack.top += 3;
+    luaD_calln(2, 1);
+  }
+  else {  /* a < b? */
+    *(L->stack.top) = *a;
+    *(L->stack.top+1) = *b;
+    L->stack.top += 2;
+    luaV_comparison(LUA_T_NUMBER, LUA_T_NIL, LUA_T_NIL, IM_LT);
+  }
+  return ttype(--(L->stack.top)) != LUA_T_NIL;
+}
+
+static void auxsort (Hash *a, int l, int u, TObject *f) {
+  while (l < u) {  /* for tail recursion */
+    TObject *P;
+    int i, j;
+    /* sort elements a[l], a[(l+u)/2] and a[u] */
+    if (sort_comp(f, luaH_getint(a, u), luaH_getint(a, l)))  /* a[l]>a[u]? */
+      swap(a, l, u);
+    if (u-l == 1) break;  /* only 2 elements */
+    i = (l+u)/2;
+    P = luaH_getint(a, i);
+    if (sort_comp(f, P, luaH_getint(a, l)))  /* a[l]>a[i]? */
+      swap(a, l, i);
+    else if (sort_comp(f, luaH_getint(a, u), P))  /* a[i]>a[u]? */
+      swap(a, i, u);
+    if (u-l == 2) break;  /* only 3 elements */
+    P = L->stack.top++;
+    *P = *luaH_getint(a, i);  /* save pivot on stack (for GC) */
+    swap(a, i, u-1);  /* put median element as pivot (a[u-1]) */
+    /* a[l] <= P == a[u-1] <= a[u], only needs to sort from l+1 to u-2 */
+    i = l; j = u-1;
+    for  (;;) {
+      /* invariant: a[l..i] <= P <= a[j..u] */
+      while (sort_comp(f, luaH_getint(a, ++i), P))  /* stop when a[i] >= P */
+        if (i>u) lua_error("invalid order function for sorting");
+      while (sort_comp(f, P, luaH_getint(a, --j)))  /* stop when a[j] <= P */
+        if (j<l) lua_error("invalid order function for sorting");
+      if (j<i) break;
+      swap(a, i, j);
+    }
+    swap(a, u-1, i);  /* swap pivot (a[u-1]) with a[i] */
+    L->stack.top--;  /* remove pivot from stack */
+    /* a[l..i-1] <= a[i] == P <= a[i+1..u] */
+    /* adjust so that smaller "half" is in [j..i] and larger one in [l..u] */
+    if (i-l < u-i) {
+      j=l; i=i-1; l=i+2;
+    }
+    else {
+      j=i+1; i=u; u=j-2;
+    }
+    auxsort(a, j, i, f);  /* call recursively the smaller one */
+  }  /* repeat the routine for the larger one */
+}
+
+static void luaB_sort (void) {
+  lua_Object t = lua_getparam(1);
+  Hash *a = gethash(1);
+  int n = (int)getnarg(a);
+  lua_Object func = lua_getparam(2);
+  TObject *f = luaA_Address(func);
+  luaL_arg_check(!f || lua_isfunction(func), 2, "function expected");
+  luaD_checkstack(4);  /* for Pivot, f, a, b (sort_comp) */
+  auxsort(a, 1, n, f);
+  lua_pushobject(t);
+}
+
+/* }}===================================================== */
+
+
+/*
+** ====================================================== */
+
+
+
+#ifdef DEBUG
+/*
+** {======================================================
+** some DEBUG functions
+** =======================================================
+*/
+
+static void mem_query (void) {
+  lua_pushnumber(totalmem);
+  lua_pushnumber(numblocks);
+}
+
+
+static void query_strings (void) {
+  lua_pushnumber(L->string_root[luaL_check_int(1)].nuse);
+}
+
+
+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;
+  for (;;) {
+    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;
+      case 'N' : lua_pushstring(lua_nextvar(lua_getstring(reg[getnum(s)])));
+                 break;
+      case 'n' : { int n=getnum(s);
+                   n=lua_next(reg[n], (int)lua_getnumber(reg[getnum(s)]));
+                   lua_pushnumber(n); 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
+
+
+
+static struct luaL_reg builtin_funcs[] = {
+#ifdef LUA_COMPAT2_5
+  {"setfallback", luaT_setfallback},
+#endif
+#ifdef DEBUG
+  {"testC", testC},
+  {"totalmem", mem_query},
+  {"count", countlist},
+  {"querystr", query_strings},
+#endif
+  {"_ALERT", luaB_alert},
+  {"_ERRORMESSAGE", error_message},
+  {"call", luaB_call},
+  {"collectgarbage", luaB_collectgarbage},
+  {"copytagmethods", luaB_copytagmethods},
+  {"dofile", luaB_dofile},
+  {"dostring", luaB_dostring},
+  {"error", luaB_error},
+  {"getglobal", luaB_getglobal},
+  {"gettagmethod", luaB_gettagmethod},
+  {"newtag", luaB_newtag},
+  {"next", luaB_next},
+  {"nextvar", luaB_nextvar},
+  {"print", luaB_print},
+  {"rawgetglobal", luaB_rawgetglobal},
+  {"rawgettable", luaB_rawgettable},
+  {"rawsetglobal", luaB_rawsetglobal},
+  {"rawsettable", luaB_rawsettable},
+  {"seterrormethod", luaB_seterrormethod},
+  {"setglobal", luaB_setglobal},
+  {"settag", luaB_settag},
+  {"settagmethod", luaB_settagmethod},
+  {"tag", luaB_luatag},
+  {"tonumber", luaB_tonumber},
+  {"tostring", luaB_tostring},
+  {"type", luaB_type},
+  /* "Extra" functions */
+  {"assert", luaB_assert},
+  {"foreach", luaB_foreach},
+  {"foreachi", luaB_foreachi},
+  {"foreachvar", luaB_foreachvar},
+  {"getn", luaB_getn},
+  {"sort", luaB_sort},
+  {"tinsert", luaB_tinsert},
+  {"tremove", luaB_tremove}
+};
+
+
+#define INTFUNCSIZE (sizeof(builtin_funcs)/sizeof(builtin_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(builtin_funcs, (sizeof(builtin_funcs)/sizeof(builtin_funcs[0])));
+  lua_pushstring(LUA_VERSION);
+  lua_setglobal("_VERSION");
+}
+

lbuiltin.h

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

ldblib.c

@@ -0,0 +1,217 @@
+/*
+** $Id: ldblib.c,v 1.4 1999/02/04 17:47:59 roberto Exp roberto $
+** Interface from Lua to its debug API
+** See Copyright Notice in lua.h
+*/
+
+
+#include <stdlib.h>
+#include <string.h>
+
+#include "lauxlib.h"
+#include "lua.h"
+#include "luadebug.h"
+#include "lualib.h"
+
+
+
+static void settabss (lua_Object t, char *i, char *v) {
+  lua_pushobject(t);
+  lua_pushstring(i);
+  lua_pushstring(v);
+  lua_settable();
+}
+
+
+static void settabsi (lua_Object t, char *i, int v) {
+  lua_pushobject(t);
+  lua_pushstring(i);
+  lua_pushnumber(v);
+  lua_settable();
+}
+
+
+static lua_Object getfuncinfo (lua_Object func) {
+  lua_Object result = lua_createtable();
+  char *str;
+  int line;
+  lua_funcinfo(func, &str, &line);
+  if (line == -1)  /* C function? */
+    settabss(result, "kind", "C");
+  else if (line == 0) {  /* "main"? */
+      settabss(result, "kind", "chunk");
+      settabss(result, "source", str);
+    }
+  else {  /* Lua function */
+    settabss(result, "kind", "Lua");
+    settabsi(result, "def_line", line);
+    settabss(result, "source", str);
+  }
+  if (line != 0) {  /* is it not a "main"? */
+    char *kind = lua_getobjname(func, &str);
+    if (*kind) {
+      settabss(result, "name", str);
+      settabss(result, "where", kind);
+    }
+  }
+  return result;
+}
+
+
+static void getstack (void) {
+  lua_Object func = lua_stackedfunction(luaL_check_int(1));
+  if (func == LUA_NOOBJECT)  /* level out of range? */
+    return;
+  else {
+    lua_Object result = getfuncinfo(func);
+    int currline = lua_currentline(func);
+    if (currline > 0)
+      settabsi(result, "current", currline);
+    lua_pushobject(result);
+    lua_pushstring("func");
+    lua_pushobject(func);
+    lua_settable();  /* result.func = func */
+    lua_pushobject(result);
+  }
+}
+
+
+static void funcinfo (void) {
+  lua_pushobject(getfuncinfo(luaL_functionarg(1)));
+}
+
+
+static int findlocal (lua_Object func, int arg) {
+  lua_Object v = lua_getparam(arg);
+  if (lua_isnumber(v))
+    return (int)lua_getnumber(v);
+  else {
+    char *name = luaL_check_string(arg);
+    int i = 0;
+    int result = -1;
+    char *vname;
+    while (lua_getlocal(func, ++i, &vname) != LUA_NOOBJECT) {
+      if (strcmp(name, vname) == 0)
+        result = i;  /* keep looping to get the last var with this name */
+    }
+    if (result == -1)
+      luaL_verror("no local variable `%.50s' at given level", name);
+    return result;
+  }
+}
+
+
+static void getlocal (void) {
+  lua_Object func = lua_stackedfunction(luaL_check_int(1));
+  lua_Object val;
+  char *name;
+  if (func == LUA_NOOBJECT)  /* level out of range? */
+    return;  /* return nil */
+  else if (lua_getparam(2) != LUA_NOOBJECT) {  /* 2nd argument? */
+    if ((val = lua_getlocal(func, findlocal(func, 2), &name)) != LUA_NOOBJECT) {
+      lua_pushobject(val);
+      lua_pushstring(name);
+    }
+    /* else return nil */
+  }
+  else {  /* collect all locals in a table */
+    lua_Object result = lua_createtable();
+    int i;
+    for (i=1; ;i++) {
+      if ((val = lua_getlocal(func, i, &name)) == LUA_NOOBJECT)
+        break;
+      lua_pushobject(result);
+      lua_pushstring(name);
+      lua_pushobject(val);
+      lua_settable();  /* result[name] = value */
+    }
+    lua_pushobject(result);
+  }
+}
+
+
+static void setlocal (void) {
+  lua_Object func = lua_stackedfunction(luaL_check_int(1));
+  int numvar;
+  luaL_arg_check(func != LUA_NOOBJECT, 1, "level out of range");
+  numvar = findlocal(func, 2);
+  lua_pushobject(luaL_nonnullarg(3));
+  if (!lua_setlocal(func, numvar))
+    lua_error("no such local variable");
+}
+
+
+
+static int linehook = -1;  /* Lua reference to line hook function */
+static int callhook = -1;  /* Lua reference to call hook function */
+
+
+static void dohook (int ref) {
+  lua_LHFunction oldlinehook = lua_setlinehook(NULL);
+  lua_CHFunction oldcallhook = lua_setcallhook(NULL);
+  lua_callfunction(lua_getref(ref));
+  lua_setlinehook(oldlinehook);
+  lua_setcallhook(oldcallhook);
+}
+
+
+static void linef (int line) {
+  lua_pushnumber(line);
+  dohook(linehook);
+}
+
+
+static void callf (lua_Function func, char *file, int line) {
+  if (func != LUA_NOOBJECT) {
+    lua_pushobject(func);
+    lua_pushstring(file);
+    lua_pushnumber(line);
+  }
+  dohook(callhook);
+}
+
+
+static void setcallhook (void) {
+  lua_Object f = lua_getparam(1);
+  lua_unref(callhook);
+  if (f == LUA_NOOBJECT) {
+    callhook = -1;
+    lua_setcallhook(NULL);
+  }
+  else {
+    lua_pushobject(f);
+    callhook = lua_ref(1);
+    lua_setcallhook(callf);
+  }
+}
+
+
+static void setlinehook (void) {
+  lua_Object f = lua_getparam(1);
+  lua_unref(linehook);
+  if (f == LUA_NOOBJECT) {
+    linehook = -1;
+    lua_setlinehook(NULL);
+  }
+  else {
+    lua_pushobject(f);
+    linehook = lua_ref(1);
+    lua_setlinehook(linef);
+  }
+}
+
+
+static struct luaL_reg dblib[] = {
+  {"funcinfo", funcinfo},
+  {"getlocal", getlocal},
+  {"getstack", getstack},
+  {"setcallhook", setcallhook},
+  {"setlinehook", setlinehook},
+  {"setlocal", setlocal}
+};
+
+
+void lua_dblibopen (void) {
+  luaL_openlib(dblib, (sizeof(dblib)/sizeof(dblib[0])));
+}
+

ldo.c

@@ -0,0 +1,395 @@
+/*
+** $Id: ldo.c,v 1.40 1999/03/10 14:23:07 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 "lauxlib.h"
+#include "ldo.h"
+#include "lfunc.h"
+#include "lgc.h"
+#include "lmem.h"
+#include "lobject.h"
+#include "lparser.h"
+#include "lstate.h"
+#include "lstring.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
+
+
+
+#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);
+}
+
+
+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)+STACK_UNIT+n;
+    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;
+  (*L->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)
+    (*L->callhook)(LUA_NOOBJECT, "(return)", 0);
+  else {
+    TObject *f = L->stack.stack+base-1;
+    if (tf)
+      (*L->callhook)(Ref(f), tf->source->str, tf->lineDefined);
+    else
+      (*L->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 (L->callhook)
+    luaD_callHook(base, NULL, 0);
+  (*f)();  /* do the actual call */
+  if (L->callhook)  /* func may have changed 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_calln(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;
+}
+
+
+void luaD_calln (int nArgs, int nResults) {
+    luaD_call((L->stack.top-L->stack.stack)-nArgs, nResults);
+}
+
+
+/*
+** 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 *em = &(luaS_new("_ERRORMESSAGE")->u.s.globalval);
+  if (ttype(em) == LUA_T_PROTO || ttype(em) == LUA_T_CPROTO ||
+      ttype(em) == LUA_T_CLOSURE) {
+    *L->stack.top = *em;
+    incr_top;
+    lua_pushstring(s);
+    luaD_calln(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 {
+    message("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 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 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) {
+  volatile struct C_Lua_Stack oldCLS = L->Cstack;
+  jmp_buf myErrorJmp;
+  volatile int status;
+  jmp_buf *volatile 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) {
+  volatile struct C_Lua_Stack oldCLS = L->Cstack;
+  jmp_buf myErrorJmp;
+  volatile int status;
+  TProtoFunc *volatile tf;
+  jmp_buf *volatile oldErr = L->errorJmp;
+  L->errorJmp = &myErrorJmp;
+  if (setjmp(myErrorJmp) == 0) {
+    tf = bin ? luaU_undump1(z) : luaY_parser(z);
+    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;
+    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;
+  int debug = L->debug;  /* save debug 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);
+  L->debug = debug;  /* restore debug status */
+  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);
+  }
+}
+
+
+#define	MAXFILENAME	260	/* maximum part of a file name kept */
+
+int lua_dofile (char *filename) {
+  ZIO z;
+  int status;
+  int c;
+  int bin;
+  char source[MAXFILENAME];
+  FILE *f = (filename == NULL) ? stdin : fopen(filename, "r");
+  if (f == NULL)
+    return 2;
+  c = fgetc(f);
+  ungetc(c, f);
+  bin = (c == ID_CHUNK);
+  if (bin)
+    f = freopen(filename, "rb", f);  /* set binary mode */
+  luaL_filesource(source, filename, sizeof(source));
+  luaZ_Fopen(&z, f, source);
+  status = do_main(&z, bin);
+  if (f != stdin)
+    fclose(f);
+  return status;
+}
+
+
+int lua_dostring (char *str) {
+  return lua_dobuffer(str, strlen(str), str);
+}
+
+
+int lua_dobuffer (char *buff, int size, char *name) {
+  ZIO z;
+  if (!name) name = "?";
+  luaZ_mopen(&z, buff, size, name);
+  return do_main(&z, buff[0]==ID_CHUNK);
+}
+

ldo.h

@@ -0,0 +1,47 @@
+/*
+** $Id: ldo.h,v 1.4 1997/12/15 16:17:20 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_calln (int nArgs, 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

lex.c

@@ -1,470 +0,0 @@
-char *rcs_lex = "$Id: lex.c,v 3.4 1997/06/11 18:56:02 roberto Exp roberto $";
-
-
-#include <ctype.h>
-#include <string.h>
-
-#include "auxlib.h"
-#include "luamem.h"
-#include "tree.h"
-#include "table.h"
-#include "lex.h"
-#include "inout.h"
-#include "luadebug.h"
-#include "parser.h"
-
-#define MINBUFF 250
-
-static int current;  /* look ahead character */
-static ZIO *lex_z;
-
-
-#define next() (current = zgetc(lex_z))
-#define save(x) (yytext[tokensize++] = (x))
-#define save_and_next()  (save(current), next())
-
-
-#define MAX_IFS	5
-
-/* "ifstate" keeps the state of each nested $if the lexical is dealing with. */
-
-static struct {
-  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 */
-} ifstate[MAX_IFS];
-
-static int iflevel;  /* level of nested $if's */
-
-
-void lua_setinput (ZIO *z)
-{
-  current = '\n';
-  lua_linenumber = 0;
-  iflevel = 0;
-  ifstate[0].skip = 0;
-  ifstate[0].elsepart = 1;  /* to avoid a free $else */
-  lex_z = z;
-}
-
-
-static void luaI_auxsyntaxerror (char *s)
-{
-  luaL_verror("%s;\n> at line %d in file %s",
-               s, lua_linenumber, lua_parsedfile);
-}
-
-static void luaI_auxsynterrbf (char *s, char *token)
-{
-  if (token[0] == 0)
-    token = "<eof>";
-  luaL_verror("%s;\n> last token read: \"%s\" at line %d in file %s",
-           s, token, lua_linenumber, lua_parsedfile);
-}
-
-void luaI_syntaxerror (char *s)
-{
-  luaI_auxsynterrbf(s, luaI_buffer(1));
-}
-
-
-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} };
-
-
-#define RESERVEDSIZE (sizeof(reserved)/sizeof(reserved[0]))
-
-
-void luaI_addReserved (void)
-{
-  int i;
-  for (i=0; i<RESERVEDSIZE; i++)
-  {
-    TaggedString *ts = lua_createstring(reserved[i].name);
-    ts->marked = reserved[i].token;  /* reserved word  (always > 255) */
-  }
-}
-
-
-/*
-** Pragma handling
-*/
-
-#define PRAGMASIZE	20
-
-static void skipspace (void)
-{
-  while (current == ' ' || current == '\t') next();
-}
-
-
-static int checkcond (char *buff)
-{
-  static char *opts[] = {"nil", "1"};
-  int i = luaI_findstring(buff, opts); 
-  if (i >= 0) return i;
-  else if (isalpha((unsigned char)buff[0]) || buff[0] == '_')
-    return luaI_globaldefined(buff);
-  else {
-    luaI_auxsynterrbf("invalid $if condition", buff);
-    return 0;  /* to avoid warnings */
-  }
-}
-
-
-static void readname (char *buff)
-{
-  int i = 0;
-  skipspace();
-  while (isalnum((unsigned char)current) || current == '_') {
-    if (i >= PRAGMASIZE) {
-      buff[PRAGMASIZE] = 0;
-      luaI_auxsynterrbf("pragma too long", buff);
-    }
-    buff[i++] = current;
-    next();
-  }
-  buff[i] = 0;
-}
-
-
-static void inclinenumber (void);
-
-
-static void ifskip (void)
-{
-  while (ifstate[iflevel].skip) {
-    if (current == '\n')
-      inclinenumber();
-    else if (current == EOZ)
-      luaI_auxsyntaxerror("input ends inside a $if");
-    else next();
-  }
-}
-
-
-static void inclinenumber (void)
-{
-  static char *pragmas [] = 
-    {"debug", "nodebug", "endinput", "end", "ifnot", "if", "else", NULL};
-  next();  /* skip '\n' */
-  ++lua_linenumber;
-  if (current == '$') {  /* is a pragma? */
-    char buff[PRAGMASIZE+1];
-    int ifnot = 0;
-    int skip = ifstate[iflevel].skip;
-    next();  /* skip $ */
-    readname(buff);
-    switch (luaI_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) {
-          current = EOZ;
-          iflevel = 0;  /* to allow $endinput inside a $if */
-        }
-        break;
-      case 3:  /* end */
-        if (iflevel-- == 0)
-          luaI_auxsyntaxerror("unmatched $endif");
-        break;
-      case 4:  /* ifnot */
-        ifnot = 1;
-        /* go through */
-      case 5:  /* if */
-        if (iflevel == MAX_IFS-1)
-          luaI_auxsyntaxerror("too many nested `$ifs'");
-        readname(buff);
-        iflevel++;
-        ifstate[iflevel].elsepart = 0;
-        ifstate[iflevel].condition = checkcond(buff) ? !ifnot : ifnot;
-        ifstate[iflevel].skip = skip || !ifstate[iflevel].condition;
-        break;
-      case 6:  /* else */
-        if (ifstate[iflevel].elsepart)
-          luaI_auxsyntaxerror("unmatched $else");
-        ifstate[iflevel].elsepart = 1;
-        ifstate[iflevel].skip =
-                    ifstate[iflevel-1].skip || ifstate[iflevel].condition;
-        break;
-      default:
-        luaI_auxsynterrbf("invalid pragma", buff);
-    }
-    skipspace();
-    if (current == '\n')  /* pragma must end with a '\n' ... */
-      inclinenumber();
-    else if (current != EOZ)  /* or eof */
-      luaI_auxsyntaxerror("invalid pragma format");
-    ifskip();
-  }
-}
-
-static int read_long_string (char *yytext, int buffsize)
-{
-  int cont = 0;
-  int tokensize = 2;  /* '[[' already stored */
-  while (1)
-  {
-    if (buffsize-tokensize <= 2) /* may read more than 1 char in one cicle */
-      yytext = luaI_buffer(buffsize *= 2);
-    switch (current)
-    {
-      case EOZ:
-        save(0);
-        return WRONGTOKEN;
-      case '[':
-        save_and_next();
-        if (current == '[')
-        {
-          cont++;
-          save_and_next();
-        }
-        continue;
-      case ']':
-        save_and_next();
-        if (current == ']')
-        {
-          if (cont == 0) goto endloop;
-          cont--;
-          save_and_next();
-        }
-        continue;
-      case '\n':
-        save('\n');
-        inclinenumber();
-        continue;
-      default:
-        save_and_next();
-    }
-  } endloop:
-  save_and_next();  /* pass the second ']' */
-  yytext[tokensize-2] = 0;  /* erases ']]' */
-  luaY_lval.vWord = luaI_findconstantbyname(yytext+2);
-  yytext[tokensize-2] = ']';  /* restores ']]' */
-  save(0);
-  return STRING;
-}
-
-int luaY_lex (void)
-{
-  static int linelasttoken = 0;
-  double a;
-  int buffsize = MINBUFF;
-  char *yytext = luaI_buffer(buffsize);
-  yytext[1] = yytext[2] = yytext[3] = 0;
-  if (lua_debug)
-    luaI_codedebugline(linelasttoken);
-  linelasttoken = lua_linenumber;
-  while (1)
-  {
-    int tokensize = 0;
-    switch (current)
-    {
-      case '\n':
-        inclinenumber();
-        linelasttoken = lua_linenumber;
-        continue;
-
-      case ' ': case '\t': case '\r':  /* CR: to avoid problems with DOS */
-        next();
-        continue;
-
-      case '-':
-        save_and_next();
-        if (current != '-') return '-';
-        do { next(); } while (current != '\n' && current != EOZ);
-        continue;
-
-      case '[':
-        save_and_next();
-        if (current != '[') return '[';
-        else
-        {
-          save_and_next();  /* pass the second '[' */
-          return read_long_string(yytext, buffsize);
-        }
-
-      case '=':
-        save_and_next();
-        if (current != '=') return '=';
-        else { save_and_next(); return EQ; }
-
-      case '<':
-        save_and_next();
-        if (current != '=') return '<';
-        else { save_and_next(); return LE; }
-
-      case '>':
-        save_and_next();
-        if (current != '=') return '>';
-        else { save_and_next(); return GE; }
-
-      case '~':
-        save_and_next();
-        if (current != '=') return '~';
-        else { save_and_next(); return NE; }
-
-      case '"':
-      case '\'':
-      {
-        int del = current;
-        save_and_next();
-        while (current != del)
-        {
-          if (buffsize-tokensize <= 2) /* may read more than 1 char in one cicle */
-            yytext = luaI_buffer(buffsize *= 2);
-          switch (current)
-          {
-            case EOZ:
-            case '\n':
-              save(0);
-              return WRONGTOKEN;
-            case '\\':
-              next();  /* do not save the '\' */
-              switch (current)
-              {
-                case 'n': save('\n'); next(); break;
-                case 't': save('\t'); next(); break;
-                case 'r': save('\r'); next(); break;
-                case '\n': save('\n'); inclinenumber(); break;
-                default : save_and_next(); break;
-              }
-              break;
-            default:
-              save_and_next();
-          }
-        }
-        next();  /* skip delimiter */
-        save(0);
-        luaY_lval.vWord = luaI_findconstantbyname(yytext+1);
-        tokensize--;
-        save(del); save(0);  /* restore delimiter */
-        return STRING;
-      }
-
-      case 'a': case 'b': case 'c': case 'd': case 'e':
-      case 'f': case 'g': case 'h': case 'i': case 'j':
-      case 'k': case 'l': case 'm': case 'n': case 'o':
-      case 'p': case 'q': case 'r': case 's': case 't':
-      case 'u': case 'v': case 'w': case 'x': case 'y':
-      case 'z':
-      case 'A': case 'B': case 'C': case 'D': case 'E':
-      case 'F': case 'G': case 'H': case 'I': case 'J':
-      case 'K': case 'L': case 'M': case 'N': case 'O':
-      case 'P': case 'Q': case 'R': case 'S': case 'T':
-      case 'U': case 'V': case 'W': case 'X': case 'Y':
-      case 'Z':
-      case '_':
-      {
-        TaggedString *ts;
-        do {
-          save_and_next();
-        } while (isalnum((unsigned char)current) || current == '_');
-        save(0);
-        ts = lua_createstring(yytext);
-        if (ts->marked > 2)
-          return ts->marked;  /* reserved word */
-        luaY_lval.pTStr = ts;
-        ts->marked = 2;  /* avoid GC */
-        return NAME;
-      }
-
-      case '.':
-        save_and_next();
-        if (current == '.')
-        {
-          save_and_next();
-          if (current == '.')
-          {
-            save_and_next();
-            return DOTS;   /* ... */
-          }
-          else return CONC;   /* .. */
-        }
-        else if (!isdigit((unsigned char)current)) return '.';
-        /* 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+(current-'0');
-          save_and_next();
-        } while (isdigit((unsigned char)current));
-        if (current == '.') {
-          save_and_next();
-          if (current == '.')
-            luaI_syntaxerror(
-              "ambiguous syntax (decimal point x string concatenation)");
-        }
-      fraction:
-	{ double da=0.1;
-	  while (isdigit((unsigned char)current))
-	  {
-            a+=(current-'0')*da;
-            da/=10.0;
-            save_and_next();
-          }
-          if (current == 'e' || current == 'E')
-          {
-	    int e=0;
-	    int neg;
-	    double ea;
-            save_and_next();
-	    neg=(current=='-');
-            if (current == '+' || current == '-') save_and_next();
-            if (!isdigit((unsigned char)current)) {
-              save(0); return WRONGTOKEN; }
-            do {
-              e=10.0*e+(current-'0');
-              save_and_next();
-            } while (isdigit((unsigned char)current));
-	    for (ea=neg?0.1:10.0; e>0; e>>=1)
-	    {
-	      if (e & 1) a*=ea;
-	      ea*=ea;
-	    }
-          }
-          luaY_lval.vFloat = a;
-          save(0);
-          return NUMBER;
-        }
-
-      case EOZ:
-        save(0);
-        if (iflevel > 0)
-          luaI_syntaxerror("missing $endif");
-        return 0;
-
-      default:
-        save_and_next();
-        return yytext[0];
-    }
-  }
-}
-

lex.h

@@ -1,18 +0,0 @@
-/*
-** lex.h
-** TecCGraf - PUC-Rio
-** $Id: lex.h,v 1.3 1996/11/08 12:49:35 roberto Exp roberto $
-*/
-
-#ifndef lex_h
-#define lex_h
-
-#include "zio.h"
-
-void    lua_setinput   (ZIO *z);
-void luaI_syntaxerror (char *s);
-int     luaY_lex (void);
-void luaI_addReserved (void);
-
-
-#endif

lfunc.c

@@ -0,0 +1,98 @@
+/*
+** $Id: lfunc.c,v 1.9 1998/06/19 16:14:09 roberto Exp roberto $
+** Auxiliary 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->source = 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;
+}
+

lfunc.h

@@ -0,0 +1,23 @@
+/*
+** $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

lgc.c

@@ -0,0 +1,275 @@
+/*
+** $Id: lgc.c,v 1.22 1999/02/26 15:48:55 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)
+        break;
+    if (ref == L->refSize) {  /* no more empty spaces? */
+      luaM_growvector(L->refArray, L->refSize, 1, struct ref, refEM, MAX_INT);
+      L->refSize++;
+    }
+    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_INTERNALERROR("invalid type");
+#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) {
+    int i;
+    f->head.marked = 1;
+    strmark(f->source);
+    for (i=0; i<f->nconsts; i++)
+      markobject(&f->consts[i]);
+  }
+}
+
+
+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){
+    LUA_ASSERT(g->constindex >= 0, "userdata in global list");
+    if (g->u.s.globalval.ttype != LUA_T_NIL) {
+      markobject(&g->u.s.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);
+}
+

lgc.h

@@ -0,0 +1,21 @@
+/*
+** $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

linit.c

@@ -0,0 +1,17 @@
+/*
+** $Id: linit.c,v 1.1 1999/01/08 16:47:44 roberto Exp $
+** Initialization of libraries for lua.c
+** See Copyright Notice in lua.h
+*/
+
+#include "lua.h"
+#include "lualib.h"
+
+
+void lua_userinit (void) {
+  lua_iolibopen();
+  lua_strlibopen();
+  lua_mathlibopen();
+  lua_dblibopen();
+}
+

liolib.c

@@ -0,0 +1,588 @@
+/*
+** $Id: liolib.c,v 1.37 1999/04/05 19:47:05 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
+/* no support for locale and for strerror: fake them */
+#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 IOTAG	1
+
+#define FIRSTARG	2  /* 1st is upvalue */
+
+#define CLOSEDTAG(tag)	((tag)-1)  /* assume that CLOSEDTAG = iotag-1 */
+
+
+#define FINPUT		"_INPUT"
+#define FOUTPUT		"_OUTPUT"
+
+
+#ifdef POPEN
+FILE *popen();
+int pclose();
+#define CLOSEFILE(f)    {if (pclose(f) == -1) fclose(f);}
+#else
+/* no support for popen */
+#define popen(x,y) NULL  /* that is, popen always fails */
+#define CLOSEFILE(f)    {fclose(f);}
+#endif
+
+
+
+static void pushresult (int i) {
+  if (i)
+    lua_pushuserdata(NULL);
+  else {
+    lua_pushnil();
+    lua_pushstring(strerror(errno));
+    lua_pushnumber(errno);
+  }
+}
+
+
+/*
+** {======================================================
+** FILE Operations
+** =======================================================
+*/
+
+static int gettag (void) {
+  return (int)lua_getnumber(lua_getparam(IOTAG));
+}
+
+
+static int ishandle (lua_Object f) {
+  if (lua_isuserdata(f)) {
+    int tag = gettag();
+    if (lua_tag(f) == CLOSEDTAG(tag))
+      lua_error("cannot access a closed file");
+    return lua_tag(f) == tag;
+  }
+  else return 0;
+}
+
+
+static FILE *getfilebyname (char *name) {
+  lua_Object f = lua_getglobal(name);
+  if (!ishandle(f))
+      luaL_verror("global variable `%.50s' is not a file handle", name);
+  return lua_getuserdata(f);
+}
+
+
+static FILE *getfile (int arg) {
+  lua_Object f = lua_getparam(arg);
+  return (ishandle(f)) ? lua_getuserdata(f) : NULL;
+}
+
+
+static FILE *getnonullfile (int arg) {
+  FILE *f = getfile(arg);
+  luaL_arg_check(f, arg, "invalid file handle");
+  return f;
+}
+
+
+static FILE *getfileparam (char *name, int *arg) {
+  FILE *f = getfile(*arg);
+  if (f) {
+    (*arg)++;
+    return f;
+  }
+  else
+    return getfilebyname(name);
+}
+
+
+static void closefile (FILE *f) {
+  if (f != stdin && f != stdout) {
+    int tag = gettag();
+    CLOSEFILE(f);
+    lua_pushusertag(f, tag);
+    lua_settag(CLOSEDTAG(tag));
+  }
+}
+
+
+static void io_close (void) {
+  closefile(getnonullfile(FIRSTARG));
+}
+
+
+static void gc_close (void) {
+  FILE *f = getnonullfile(FIRSTARG);
+  if (f != stdin && f != stdout && f != stderr) {
+    CLOSEFILE(f);
+  }
+}
+
+
+static void io_open (void) {
+  FILE *f = fopen(luaL_check_string(FIRSTARG), luaL_check_string(FIRSTARG+1));
+  if (f) lua_pushusertag(f, gettag());
+  else pushresult(0);
+}
+
+
+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();
+  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(getfilebyname(FINPUT));
+    current = stdin;
+  }
+  else if (lua_tag(f) == gettag())  /* deprecated option */
+    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(getfilebyname(FOUTPUT));
+    current = stdout;
+  }
+  else if (lua_tag(f) == gettag())  /* deprecated option */
+    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) {
+  FILE *fp = fopen(luaL_check_string(FIRSTARG), "a");
+  if (fp != NULL)
+    setreturn(fp, FOUTPUT);
+  else
+    pushresult(0);
+}
+
+
+
+/*
+** {======================================================
+** READ
+** =======================================================
+*/
+
+
+/*
+** We cannot lookahead without need, because this can lock stdin.
+** This flag signals when we need to read a next char.
+*/
+#define NEED_OTHER (EOF-1)  /* just some flag different from EOF */
+
+
+static int read_pattern (FILE *f, char *p) {
+  int inskip = 0;  /* {skip} level */
+  int c = NEED_OTHER;
+  while (*p != '\0') {
+    switch (*p) {
+      case '{':
+        inskip++;
+        p++;
+        continue;
+      case '}':
+        if (!inskip) lua_error("unbalanced braces in read pattern");
+        inskip--;
+        p++;
+        continue;
+      default: {
+        char *ep;  /* get what is next */
+        int m;  /* match result */
+        if (c == NEED_OTHER) c = getc(f);
+        if (c != EOF)
+          m = luaI_singlematch(c, p, &ep);
+        else {
+          luaI_singlematch(0, p, &ep);  /* to set "ep" */
+          m = 0;  /* EOF matches no pattern */
+        }
+        if (m) {
+          if (!inskip) luaL_addchar(c);
+          c = NEED_OTHER;
+        }
+        switch (*ep) {
+          case '*':  /* repetition */
+            if (!m) p = ep+1;  /* else stay in (repeat) the same item */
+            continue;
+          case '?':  /* optional */
+            p = ep+1;  /* continues reading the pattern */
+            continue;
+          default:
+            if (!m) goto break_while;  /* pattern fails? */
+            p = ep;  /* else continues reading the pattern */
+        }
+      }
+    }
+  } break_while:
+  if (c != NEED_OTHER) ungetc(c, f);
+  return (*p == '\0');
+}
+
+
+static int read_number (FILE *f) {
+  double d;
+  if (fscanf(f, "%lf", &d) == 1) {
+    lua_pushnumber(d);
+    return 1;
+  }
+  else return 0;  /* read fails */
+}
+
+
+#define HUNK_LINE	1024
+#define HUNK_FILE	BUFSIZ
+
+static int read_line (FILE *f) {
+  /* equivalent to: return read_pattern(f, "[^\n]*{\n}"); */
+  int n;
+  char *b;
+  do {
+    b = luaL_openspace(HUNK_LINE);
+    if (!fgets(b, HUNK_LINE, f)) return 0;  /* read fails */
+    n = strlen(b);
+    luaL_addsize(n); 
+  } while (b[n-1] != '\n');
+  luaL_addsize(-1);  /* remove '\n' */
+  return 1;
+}
+
+
+static void read_file (FILE *f) {
+  /* equivalent to: return read_pattern(f, ".*"); */
+  int n;
+  do {
+    char *b = luaL_openspace(HUNK_FILE);
+    n = fread(b, sizeof(char), HUNK_FILE, f);
+    luaL_addsize(n); 
+  } while (n==HUNK_FILE);
+}
+
+
+static void io_read (void) {
+  static char *options[] = {"*n", "*l", "*a", ".*", "*w", NULL};
+  int arg = FIRSTARG;
+  FILE *f = getfileparam(FINPUT, &arg);
+  char *p = luaL_opt_string(arg++, "*l");
+  do { /* repeat for each part */
+    long l;
+    int success;
+    luaL_resetbuffer();
+    switch (luaL_findstring(p, options)) {
+      case 0:  /* number */
+        if (!read_number(f)) return;  /* read fails */
+        continue;  /* number is already pushed; avoid the "pushstring" */
+      case 1:  /* line */
+        success = read_line(f);
+        break;
+      case 2: case 3:  /* file */
+        read_file(f);
+        success = 1; /* always success */
+        break;
+      case 4:  /* word */
+        success = read_pattern(f, "{%s*}%S%S*");
+        break;
+      default:
+        success = read_pattern(f, p);
+    }
+    l = luaL_getsize();
+    if (!success && l==0) return;  /* read fails */
+    lua_pushlstring(luaL_buffer(), l);
+  } while ((p = luaL_opt_string(arg++, NULL)) != NULL);
+}
+
+/* }====================================================== */
+
+
+static void io_write (void) {
+  int arg = FIRSTARG;
+  FILE *f = getfileparam(FOUTPUT, &arg);
+  int status = 1;
+  char *s;
+  long l;
+  while ((s = luaL_opt_lstr(arg++, NULL, &l)) != NULL)
+    status = status && ((long)fwrite(s, 1, l, f) == l);
+  pushresult(status);
+}
+
+
+static void io_seek (void) {
+  static int mode[] = {SEEK_SET, SEEK_CUR, SEEK_END};
+  static char *modenames[] = {"set", "cur", "end", NULL};
+  FILE *f = getnonullfile(FIRSTARG);
+  int op = luaL_findstring(luaL_opt_string(FIRSTARG+1, "cur"), modenames);
+  long offset = luaL_opt_long(FIRSTARG+2, 0);
+  luaL_arg_check(op != -1, FIRSTARG+1, "invalid mode");
+  op = fseek(f, offset, mode[op]);
+  if (op)
+    pushresult(0);  /* error */
+  else
+    lua_pushnumber(ftell(f));
+}
+
+
+static void io_flush (void) {
+  FILE *f = getfile(FIRSTARG);
+  luaL_arg_check(f || lua_getparam(FIRSTARG) == LUA_NOOBJECT, FIRSTARG,
+                 "invalid file handle");
+  pushresult(fflush(f) == 0);
+}
+
+/* }====================================================== */
+
+
+/*
+** {======================================================
+** Other O.S. Operations
+** =======================================================
+*/
+
+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_clock (void) {
+  lua_pushnumber(((double)clock())/CLOCKS_PER_SEC);
+}
+
+
+static void io_date (void) {
+  char b[256];
+  char *s = luaL_opt_string(1, "%c");
+  struct tm *tm;
+  time_t t;
+  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};
+  static char *catnames[] = {"all", "collate", "ctype", "monetary",
+     "numeric", "time", NULL};
+  int op = luaL_findstring(luaL_opt_string(2, "all"), catnames);
+  luaL_arg_check(op != -1, 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) {
+  for (;;) {
+    char buffer[250];
+    fprintf(stderr, "lua_debug> ");
+    if (fgets(buffer, sizeof(buffer), stdin) == 0 ||
+        strcmp(buffer, "cont\n") == 0)
+      return;
+    lua_dostring(buffer);
+  }
+}
+
+
+
+#define MESSAGESIZE	150
+#define MAXMESSAGE	(MESSAGESIZE*10)
+
+
+#define MAXSRC		40
+
+
+static void errorfb (void) {
+  char buff[MAXMESSAGE];
+  int level = 1;  /* skip level 0 (it's this function) */
+  lua_Object func;
+  sprintf(buff, "lua error: %.200s\n", lua_getstring(lua_getparam(1)));
+  while ((func = lua_stackedfunction(level++)) != LUA_NOOBJECT) {
+    char *name;
+    int currentline;
+    char *chunkname;
+    char buffchunk[MAXSRC];
+    int linedefined;
+    lua_funcinfo(func, &chunkname, &linedefined);
+    luaL_chunkid(buffchunk, chunkname, sizeof(buffchunk));
+    if (level == 2) strcat(buff, "Active Stack:\n");
+    strcat(buff, "\t");
+    if (strlen(buff) > MAXMESSAGE-MESSAGESIZE) {
+      strcat(buff, "...\n");
+      break;  /* buffer is full */
+    }
+    switch (*lua_getobjname(func, &name)) {
+      case 'g':
+        sprintf(buff+strlen(buff), "function `%.50s'", name);
+        break;
+      case 't':
+        sprintf(buff+strlen(buff), "`%.50s' tag method", name);
+        break;
+      default: {
+        if (linedefined == 0)
+          sprintf(buff+strlen(buff), "main of %.50s", buffchunk);
+        else if (linedefined < 0)
+          sprintf(buff+strlen(buff), "%.50s", buffchunk);
+        else
+          sprintf(buff+strlen(buff), "function <%d:%.50s>",
+                  linedefined, buffchunk);
+        chunkname = NULL;
+      }
+    }
+    if ((currentline = lua_currentline(func)) > 0)
+      sprintf(buff+strlen(buff), " at line %d", currentline);
+    if (chunkname)
+      sprintf(buff+strlen(buff), " [%.50s]", buffchunk);
+    strcat(buff, "\n");
+  }
+  func = lua_rawgetglobal("_ALERT");
+  if (lua_isfunction(func)) {  /* avoid error loop if _ALERT is not defined */
+    lua_pushstring(buff);
+    lua_callfunction(func);
+  }
+}
+
+
+
+static struct luaL_reg iolib[] = {
+  {"_ERRORMESSAGE", errorfb},
+  {"clock",     io_clock},
+  {"date",     io_date},
+  {"debug",    io_debug},
+  {"execute",  io_execute},
+  {"exit",     io_exit},
+  {"getenv",   io_getenv},
+  {"remove",   io_remove},
+  {"rename",   io_rename},
+  {"setlocale", setloc},
+  {"tmpname",   io_tmpname}
+};
+
+
+static struct luaL_reg iolibtag[] = {
+  {"appendto", io_appendto},
+  {"closefile",   io_close},
+  {"flush",     io_flush},
+  {"openfile",   io_open},
+  {"read",     io_read},
+  {"readfrom", io_readfrom},
+  {"seek",     io_seek},
+  {"write",    io_write},
+  {"writeto",  io_writeto}
+};
+
+
+static void openwithtags (void) {
+  int i;
+  int iotag = lua_newtag();
+  lua_newtag();  /* alloc CLOSEDTAG: assume that CLOSEDTAG = iotag-1 */
+  for (i=0; i<sizeof(iolibtag)/sizeof(iolibtag[0]); i++) {
+    /* put iotag as upvalue for these functions */
+    lua_pushnumber(iotag);
+    lua_pushcclosure(iolibtag[i].func, 1);
+    lua_setglobal(iolibtag[i].name);
+  }
+  /* predefined file handles */
+  setfile(stdin, FINPUT, iotag);
+  setfile(stdout, FOUTPUT, iotag);
+  setfile(stdin, "_STDIN", iotag);
+  setfile(stdout, "_STDOUT", iotag);
+  setfile(stderr, "_STDERR", iotag);
+  /* close file when collected */
+  lua_pushnumber(iotag);
+  lua_pushcclosure(gc_close, 1); 
+  lua_settagmethod(iotag, "gc");
+}
+
+void lua_iolibopen (void) {
+  /* register lib functions */
+  luaL_openlib(iolib, (sizeof(iolib)/sizeof(iolib[0])));
+  openwithtags();
+}
+

llex.c

@@ -0,0 +1,440 @@
+/*
+** $Id: llex.c,v 1.33 1999/03/11 18:59:19 roberto Exp roberto $
+** Lexical Analyzer
+** 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 "luadebug.h"
+#include "lzio.h"
+
+
+
+#define next(LS) (LS->current = zgetc(LS->lex_z))
+
+
+#define save(c)	luaL_addchar(c)
+#define save_and_next(LS)  (save(LS->current), next(LS))
+
+
+char *reserved [] = {"and", "do", "else", "elseif", "end", "function",
+    "if", "local", "nil", "not", "or", "repeat", "return", "then",
+    "until", "while"};
+
+
+void luaX_init (void) {
+  int i;
+  for (i=0; i<(sizeof(reserved)/sizeof(reserved[0])); i++) {
+    TaggedString *ts = luaS_new(reserved[i]);
+    ts->head.marked = FIRST_RESERVED+i;  /* reserved word  (always > 255) */
+  }
+}
+
+
+#define MAXSRC          40
+
+void luaX_syntaxerror (LexState *ls, char *s, char *token) {
+  char buff[MAXSRC];
+  luaL_chunkid(buff, zname(ls->lex_z), sizeof(buff));
+  if (token[0] == '\0')
+    token = "<eof>";
+  luaL_verror("%.100s;\n  last token read: `%.50s' at line %d in %.50s",
+              s, token, ls->linenumber, buff);
+}
+
+
+void luaX_error (LexState *ls, char *s) {
+  save('\0');
+  luaX_syntaxerror(ls, s, luaL_buffer());
+}
+
+
+void luaX_token2str (int token, char *s) {
+  if (token < 255) {
+    s[0] = (char)token;
+    s[1] = '\0';
+  }
+  else
+    strcpy(s, reserved[token-FIRST_RESERVED]);
+}
+
+
+static void luaX_invalidchar (LexState *ls, int c) {
+  char buff[10];
+  sprintf(buff, "0x%02X", c);
+  luaX_syntaxerror(ls, "invalid control char", buff);
+}
+
+
+static void firstline (LexState *LS)
+{
+  int c = zgetc(LS->lex_z);
+  if (c == '#')
+    while ((c=zgetc(LS->lex_z)) != '\n' && c != EOZ) /* skip first line */;
+  zungetc(LS->lex_z);
+}
+
+
+void luaX_setinput (LexState *LS, ZIO *z)
+{
+  LS->current = '\n';
+  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;
+  LS->fs = NULL;
+  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 (LexState *LS, char *buff)
+{
+  static char *opts[] = {"nil", "1", NULL};
+  int i = luaL_findstring(buff, opts);
+  if (i >= 0) return i;
+  else if (isalpha((unsigned char)buff[0]) || buff[0] == '_')
+    return luaS_globaldefined(buff);
+  else {
+    luaX_syntaxerror(LS, "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;
+      luaX_syntaxerror(LS, "pragma too long", buff);
+    }
+    buff[i++] = (char)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)
+      luaX_error(LS, "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 (luaL_findstring(buff, pragmas)) {
+      case 0:  /* debug */
+        if (!skip) L->debug = 1;
+        break;
+      case 1:  /* nodebug */
+        if (!skip) L->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)
+          luaX_syntaxerror(LS, "unmatched $end", "$end");
+        break;
+      case 4:  /* ifnot */
+        ifnot = 1;
+        /* go through */
+      case 5:  /* if */
+        if (LS->iflevel == MAX_IFS-1)
+          luaX_syntaxerror(LS, "too many nested $ifs", "$if");
+        readname(LS, buff);
+        LS->iflevel++;
+        LS->ifstate[LS->iflevel].elsepart = 0;
+        LS->ifstate[LS->iflevel].condition = checkcond(LS, buff) ? !ifnot : ifnot;
+        LS->ifstate[LS->iflevel].skip = skip || !LS->ifstate[LS->iflevel].condition;
+        break;
+      case 6:  /* else */
+        if (LS->ifstate[LS->iflevel].elsepart)
+          luaX_syntaxerror(LS, "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:
+        luaX_syntaxerror(LS, "unknown pragma", buff);
+    }
+    skipspace(LS);
+    if (LS->current == '\n')  /* pragma must end with a '\n' ... */
+      inclinenumber(LS);
+    else if (LS->current != EOZ)  /* or eof */
+      luaX_syntaxerror(LS, "invalid pragma format", buff);
+    ifskip(LS);
+  }
+}
+
+
+
+/*
+** =======================================================
+** LEXICAL ANALIZER
+** =======================================================
+*/
+
+
+
+static int read_long_string (LexState *LS) {
+  int cont = 0;
+  for (;;) {
+    switch (LS->current) {
+      case EOZ:
+        luaX_error(LS, "unfinished long string");
+        return EOS;  /* to avoid warnings */
+      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);  /* skip the second ']' */
+  LS->seminfo.ts = luaS_newlstr(L->Mbuffer+(L->Mbuffbase+2),
+                          L->Mbuffnext-L->Mbuffbase-4);
+  return STRING;
+}
+
+
+int luaX_lex (LexState *LS) {
+  luaL_resetbuffer();
+  for (;;) {
+    switch (LS->current) {
+
+      case ' ': case '\t': case '\r':  /* CR: to avoid problems with DOS */
+        next(LS);
+        continue;
+
+      case '\n':
+        inclinenumber(LS);
+        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);
+        }
+
+      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':
+              luaX_error(LS, "unfinished string");
+              return EOS;  /* to avoid warnings */
+            case '\\':
+              next(LS);  /* do not save the '\' */
+              switch (LS->current) {
+                case 'a': save('\a'); next(LS); break;
+                case 'b': save('\b'); next(LS); break;
+                case 'f': save('\f'); next(LS); break;
+                case 'n': save('\n'); next(LS); break;
+                case 'r': save('\r'); next(LS); break;
+                case 't': save('\t'); next(LS); break;
+                case 'v': save('\v'); next(LS); break;
+                case '\n': save('\n'); inclinenumber(LS); break;
+                default : {
+                  if (isdigit(LS->current)) {
+                    int c = 0;
+                    int i = 0;
+                    do {
+                      c = 10*c + (LS->current-'0');
+                      next(LS);
+                    } while (++i<3 && isdigit(LS->current));
+                    if (c != (unsigned char)c)
+                      luaX_error(LS, "escape sequence too large");
+                    save(c);
+                  }
+                  else {  /* handles \, ", ', and ? */
+                    save(LS->current);
+                    next(LS);
+                  }
+                  break;
+                }
+              }
+              break;
+            default:
+              save_and_next(LS);
+          }
+        }
+        save_and_next(LS);  /* skip delimiter */
+        LS->seminfo.ts = luaS_newlstr(L->Mbuffer+(L->Mbuffbase+1),
+                                L->Mbuffnext-L->Mbuffbase-2);
+        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 '.';
+        goto fraction;  /* LS->current is a digit: goes through to number */
+
+      case '0': case '1': case '2': case '3': case '4':
+      case '5': case '6': case '7': case '8': case '9':
+        do {
+          save_and_next(LS);
+        } while (isdigit(LS->current));
+        if (LS->current == '.') {
+          save_and_next(LS);
+          if (LS->current == '.') {
+            save('.');
+            luaX_error(LS, 
+              "ambiguous syntax (decimal point x string concatenation)");
+          }
+        }
+      fraction:
+        while (isdigit(LS->current))
+          save_and_next(LS);
+        if (toupper(LS->current) == 'E') {
+          save_and_next(LS);  /* read 'E' */
+          save_and_next(LS);  /* read '+', '-' or first digit */
+          while (isdigit(LS->current))
+            save_and_next(LS);
+        }
+        save('\0');
+        LS->seminfo.r = luaO_str2d(L->Mbuffer+L->Mbuffbase);
+        if (LS->seminfo.r < 0)
+          luaX_error(LS, "invalid numeric format");
+        return NUMBER;
+
+      case EOZ:
+        if (LS->iflevel > 0)
+          luaX_error(LS, "input ends inside a $if");
+        return EOS;
+
+      default:
+        if (LS->current != '_' && !isalpha(LS->current)) {
+          int c = LS->current;
+          if (iscntrl(c))
+            luaX_invalidchar(LS, c);
+          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->Mbuffer+L->Mbuffbase);
+          if (ts->head.marked >= FIRST_RESERVED)
+            return ts->head.marked;  /* reserved word */
+          LS->seminfo.ts = ts;
+          return NAME;
+        }
+    }
+  }
+}
+

llex.h

@@ -0,0 +1,62 @@
+/*
+** $Id: llex.h,v 1.10 1998/07/24 18:02:38 roberto Exp roberto $
+** Lexical Analyzer
+** See Copyright Notice in lua.h
+*/
+
+#ifndef llex_h
+#define llex_h
+
+#include "lobject.h"
+#include "lzio.h"
+
+
+#define FIRST_RESERVED	260
+
+/* maximum length of a reserved word (+1 for terminal 0) */
+#define TOKEN_LEN	15
+
+enum RESERVED {
+  /* terminal symbols denoted by reserved words */
+  AND = FIRST_RESERVED,
+  DO, ELSE, ELSEIF, END, FUNCTION, IF, LOCAL, NIL, NOT, OR,
+  REPEAT, RETURN, THEN, UNTIL, WHILE,
+  /* other terminal symbols */
+  NAME, CONC, DOTS, EQ, GE, LE, NE, NUMBER, STRING, EOS};
+
+
+#define MAX_IFS 5
+
+/* "ifstate" keeps the state of each nested $if the lexical is dealing with. */
+
+struct ifState {
+  int elsepart;  /* true if it's in the $else part */
+  int condition;  /* true if $if condition is true */
+  int skip;  /* true if part must be skipped */
+};
+
+
+typedef struct LexState {
+  int current;  /* look ahead character */
+  int token;  /* look ahead token */
+  struct FuncState *fs;  /* 'FuncState' is private for the parser */
+  union {
+    real r;
+    TaggedString *ts;
+  } seminfo;  /* semantics information */
+  struct zio *lex_z;  /* input stream */
+  int linenumber;  /* input line counter */
+  int iflevel;  /* level of nested $if's (for lexical analysis) */
+  struct ifState ifstate[MAX_IFS];
+} LexState;
+
+
+void luaX_init (void);
+void luaX_setinput (LexState *LS, ZIO *z);
+int luaX_lex (LexState *LS);
+void luaX_syntaxerror (LexState *ls, char *s, char *token);
+void luaX_error (LexState *ls, char *s);
+void luaX_token2str (int token, char *s);
+
+
+#endif

lmathlib.c

@@ -0,0 +1,202 @@
+/*
+** $Id: lmathlib.c,v 1.15 1999/01/04 12:41:12 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"
+
+
+#define PI	(3.14159265358979323846)
+#define RADIANS_PER_DEGREE	(PI/180.0)
+
+
+
+/*
+** If you want Lua to operate in radians (instead of degrees),
+** define RADIANS
+*/
+#ifdef RADIANS
+#define FROMRAD(a)	(a)
+#define TORAD(a)	(a)
+#else
+#define FROMRAD(a)	((a)/RADIANS_PER_DEGREE)
+#define TORAD(a)	((a)*RADIANS_PER_DEGREE)
+#endif
+
+
+static void math_abs (void) {
+  lua_pushnumber(fabs(luaL_check_number(1)));
+}
+
+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)/RADIANS_PER_DEGREE);
+}
+
+static void math_rad (void) {
+  lua_pushnumber(luaL_check_number(1)*RADIANS_PER_DEGREE);
+}
+
+static void math_frexp (void) {
+  int e;
+  lua_pushnumber(frexp(luaL_check_number(1), &e));
+  lua_pushnumber(e);
+}
+
+static void math_ldexp (void) {
+  lua_pushnumber(ldexp(luaL_check_number(1), luaL_check_int(2)));
+}
+
+
+
+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 '%' avoids the (rare) case of r==1, and is needed also because on
+     some systems (SunOS!) "rand()" may return a value bigger than RAND_MAX */
+  double r = (double)(rand()%RAND_MAX) / (double)RAND_MAX;
+  int l = luaL_opt_int(1, 0);
+  if (l == 0)
+    lua_pushnumber(r);
+  else {
+    int u = luaL_opt_int(2, 0);
+    if (u == 0) {
+      u = l;
+      l = 1;
+    }
+    luaL_arg_check(l<=u, 1, "interval is empty");
+    lua_pushnumber((int)(r*(u-l+1))+l);
+  }
+}
+
+
+static void math_randomseed (void) {
+  srand(luaL_check_int(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},
+{"frexp", math_frexp},
+{"ldexp", math_ldexp},
+{"sqrt",  math_sqrt},
+{"min",   math_min},
+{"max",   math_max},
+{"log",   math_log},
+{"log10", math_log10},
+{"exp",   math_exp},
+{"deg",   math_deg},
+{"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_pushcfunction(math_pow);
+  lua_pushnumber(0);  /* to get its tag */
+  lua_settagmethod(lua_tag(lua_pop()), "pow");
+  lua_pushnumber(PI); lua_setglobal("PI");
+}
+

lmem.c

@@ -0,0 +1,135 @@
+/*
+** $Id: lmem.c,v 1.13 1999/02/26 15:50:10 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"
+
+
+/*
+** real ANSI systems do not need these tests;
+** but some systems (Sun OS) are not that ANSI...
+*/
+#ifdef OLD_ANSI
+#define realloc(b,s)	((b) == NULL ? malloc(s) : (realloc)(b, s))
+#define free(b)		if (b) (free)(b)
+#endif
+
+
+#define MINSIZE	16	/* minimum size for "growing" vectors */
+
+
+
+#ifndef DEBUG
+
+
+static unsigned long power2 (unsigned long n) {
+  unsigned long p = MINSIZE;
+  while (p<=n) p<<=1;
+  return p;
+}
+
+
+void *luaM_growaux (void *block, unsigned long nelems, int inc, int size,
+                       char *errormsg, unsigned long limit) {
+  unsigned long newn = nelems+inc;
+  if ((newn ^ nelems) <= nelems ||  /* still the same power of 2 limit? */
+       (nelems > 0 && newn < MINSIZE))  /* or block already is MINSIZE? */
+      return block;  /* do not need to reallocate */
+  else {  /* it crossed a power of 2 boundary; grow to next power */
+    if (newn >= limit)
+      lua_error(errormsg);
+    newn = power2(newn);
+    if (newn > limit)
+      newn = limit;
+    return luaM_realloc(block, newn*size);
+  }
+}
+
+
+/*
+** generic allocation routine.
+*/
+void *luaM_realloc (void *block, unsigned long size) {
+  size_t s = (size_t)size;
+  if (s != size)
+    lua_error("memory allocation error: block too big");
+  if (size == 0) {
+    free(block);  /* block may be NULL, that is OK for free */
+    return NULL;
+  }
+  block = realloc(block, s);
+  if (block == NULL)
+    lua_error(memEM);
+  return block;
+}
+
+
+
+#else
+/* DEBUG */
+
+#include <string.h>
+
+
+void *luaM_growaux (void *block, unsigned long nelems, int inc, int size,
+                       char *errormsg, unsigned long limit) {
+  unsigned long newn = nelems+inc;
+  if (newn >= limit)
+    lua_error(errormsg);
+  return luaM_realloc(block, newn*size);
+}
+
+
+#define HEADER	(sizeof(double))
+
+#define MARK    55
+
+unsigned long numblocks = 0;
+unsigned long totalmem = 0;
+
+
+static void *checkblock (void *block) {
+  unsigned long *b = (unsigned long *)((char *)block - HEADER);
+  unsigned long size = *b;
+  LUA_ASSERT(*(((char *)b)+size+HEADER) == MARK, 
+             "corrupted block");
+  numblocks--;
+  totalmem -= size;
+  return b;
+}
+
+
+void *luaM_realloc (void *block, unsigned long size) {
+  unsigned long realsize = HEADER+size+1;
+  if (realsize != (size_t)realsize)
+    lua_error("memory allocation error: block too big");
+  if (size == 0) {
+    if (block) {
+      unsigned long *b = (unsigned long *)((char *)block - HEADER);
+      memset(block, -1, *b);  /* erase block */
+      block = checkblock(block);
+    }
+    free(block);
+    return NULL;
+  }
+  if (block)
+    block = checkblock(block);
+  block = (unsigned long *)realloc(block, realsize);
+  if (block == NULL)
+    lua_error(memEM);
+  totalmem += size;
+  numblocks++;
+  *(unsigned long *)block = size;
+  *(((char *)block)+size+HEADER) = MARK;
+  return (unsigned long *)((char *)block+HEADER);
+}
+
+
+#endif

lmem.h

@@ -0,0 +1,41 @@
+/*
+** $Id: lmem.h,v 1.7 1999/02/25 15:16:26 roberto Exp roberto $
+** Interface to Memory Manager
+** See Copyright Notice in lua.h
+*/
+
+#ifndef lmem_h
+#define lmem_h
+
+
+#include <stdlib.h>
+
+/* 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"
+#define arrEM	"internal array bigger than `int' limit"
+
+void *luaM_realloc (void *oldblock, unsigned long size);
+void *luaM_growaux (void *block, unsigned long nelems, int inc, 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(v,nelems,inc,t,e,l) \
+          ((v)=(t *)luaM_growaux(v,nelems,inc,sizeof(t),e,l))
+#define luaM_reallocvector(v,n,t) ((v)=(t *)luaM_realloc(v,(n)*sizeof(t)))
+
+
+#ifdef DEBUG
+extern unsigned long numblocks;
+extern unsigned long totalmem;
+#endif
+
+
+#endif
+

lobject.c

@@ -0,0 +1,129 @@
+/*
+** $Id: lobject.c,v 1.18 1999/02/26 15:48:30 roberto Exp roberto $
+** Some generic functions over Lua objects
+** See Copyright Notice in lua.h
+*/
+
+#include <ctype.h>
+#include <stdlib.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("tableEM");
+  return 0;  /* to avoid warnings */
+}
+
+
+int luaO_equalval (TObject *t1, TObject *t2) {
+  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_INTERNALERROR("invalid type");
+     return 0; /* UNREACHABLE */
+  }
+}
+
+
+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) {
+  while (size--)
+    ((char *)dest)[size]=((char *)src)[size];
+}
+
+void luaO_memdown (void *dest, void *src, int size) {
+  int i;
+  for (i=0; i<size; i++)
+    ((char *)dest)[i]=((char *)src)[i];
+}
+#endif
+
+
+
+static double expten (unsigned int e) {
+  double exp = 10.0;
+  double res = 1.0;
+  for (; e; e>>=1) {
+    if (e & 1) res *= exp;
+    exp *= exp;
+  }
+  return res;
+}
+
+
+double luaO_str2d (char *s) {  /* LUA_NUMBER */
+  double a = 0.0;
+  int point = 0;
+  while (isdigit((unsigned char)*s)) {
+    a = 10.0*a + (*(s++)-'0');
+  }
+  if (*s == '.') {
+    s++;
+    while (isdigit((unsigned char)*s)) {
+      a = 10.0*a + (*(s++)-'0');
+      point++;
+    }
+  }
+  if (toupper((unsigned char)*s) == 'E') {
+    int e = 0;
+    int sig = 1;
+    s++;
+    if (*s == '-') {
+      s++;
+      sig = -1;
+    }
+    else if (*s == '+') s++;
+    if (!isdigit((unsigned char)*s)) return -1;  /* no digit in the exponent? */
+    do {
+      e = 10*e + (*(s++)-'0');
+    } while (isdigit((unsigned char)*s));
+    point -= sig*e;
+  }
+  while (isspace((unsigned char)*s)) s++;
+  if (*s != '\0') return -1;  /* invalid trailing characters? */
+  if (point > 0)
+    a /= expten(point);
+  else if (point < 0)
+    a *= expten(-point);
+  return a;
+}
+

lobject.h

@@ -0,0 +1,204 @@
+/*
+** $Id: lobject.h,v 1.27 1999/03/04 21:17:26 roberto Exp roberto $
+** Type definitions for Lua objects
+** See Copyright Notice in lua.h
+*/
+
+#ifndef lobject_h
+#define lobject_h
+
+
+#include <limits.h>
+
+#include "lua.h"
+
+
+#ifdef DEBUG
+#include "lauxlib.h"
+#define LUA_INTERNALERROR(s)	\
+	luaL_verror("INTERNAL ERROR - %s [%s:%d]",(s),__FILE__,__LINE__)
+#define LUA_ASSERT(c,s) { if (!(c)) LUA_INTERNALERROR(s); }
+#else
+#define LUA_INTERNALERROR(s)  /* empty */
+#define LUA_ASSERT(c,s)  /* empty */
+#endif
+
+
+/*
+** "real" is the type "number" of Lua
+** GREP LUA_NUMBER to change that
+*/
+#ifndef LUA_NUM_TYPE
+#define LUA_NUM_TYPE double
+#endif
+
+
+typedef LUA_NUM_TYPE real;
+
+#define Byte lua_Byte	/* some systems have Byte as a predefined type */
+typedef unsigned char  Byte;  /* unsigned 8 bits */
+
+
+#define MAX_INT   (INT_MAX-2)  /* maximum value of an 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_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;
+  unsigned long hash;
+  int constindex;  /* hint to reuse constants (= -1 if this is a userdata) */
+  union {
+    struct {
+      TObject globalval;
+      long len;  /* if this is a string, here is its length */
+    } s;
+    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  *source;
+  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[];
+
+#define luaO_typename(o)        luaO_typenames[-ttype(o)]
+
+
+extern TObject luaO_nilobject;
+
+#define luaO_equalObj(t1,t2)	((ttype(t1) != ttype(t2)) ? 0 \
+                                      : luaO_equalval(t1,t2))
+int luaO_equalval (TObject *t1, TObject *t2);
+int luaO_redimension (int oldsize);
+void luaO_insertlist (GCnode *root, GCnode *node);
+double luaO_str2d (char *s);
+
+#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

lopcodes.h

@@ -0,0 +1,138 @@
+/*
+** $Id: lopcodes.h,v 1.31 1999/03/05 21:16:07 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 word parameter, then with byte parameter.
+*/
+
+
+typedef enum {
+/* name          parm    before          after           side effect
+-----------------------------------------------------------------------------*/
+ENDCODE,/*	-	-		(return)			*/
+RETCODE,/*	b	-		(return)			*/
+
+CALL,/*		b c	v_c...v_1 f	r_b...r_1	f(v1,...,v_c)	*/
+
+TAILCALL,/*	b c	v_c...v_1 f	(return)	f(v1,...,v_c)	*/
+
+PUSHNIL,/*	b	-		nil_0...nil_b			*/
+POP,/*		b	a_b...a_1	-				*/
+
+PUSHNUMBERW,/*	w	-		(float)w			*/
+PUSHNUMBER,/*	b	-		(float)b			*/
+
+PUSHNUMBERNEGW,/* w	-		(float)-w			*/
+PUSHNUMBERNEG,/* b	-		(float)-b			*/
+
+PUSHCONSTANTW,/*w	-		CNST[w]				*/
+PUSHCONSTANT,/*	b	-		CNST[b]				*/
+
+PUSHUPVALUE,/*	b	-		Closure[b]			*/
+
+PUSHLOCAL,/*	b	-		LOC[b]				*/
+
+GETGLOBALW,/*	w	-		VAR[CNST[w]]			*/
+GETGLOBAL,/*	b	-		VAR[CNST[b]]			*/
+
+GETTABLE,/*	-	i t		t[i]				*/
+
+GETDOTTEDW,/*	w	t		t[CNST[w]]			*/
+GETDOTTED,/*	b	t		t[CNST[b]]			*/
+
+PUSHSELFW,/*	w	t		t t[CNST[w]]			*/
+PUSHSELF,/*	b	t		t t[CNST[b]]			*/
+
+CREATEARRAYW,/*	w	-		newarray(size = w)		*/
+CREATEARRAY,/*	b	-		newarray(size = b)		*/
+
+SETLOCAL,/*	b	x		-		LOC[b]=x	*/
+
+SETGLOBALW,/*	w	x		-		VAR[CNST[w]]=x	*/
+SETGLOBAL,/*	b	x		-		VAR[CNST[b]]=x	*/
+
+SETTABLEPOP,/*	-	v i t		-		t[i]=v		*/
+
+SETTABLE,/*	b	v a_b...a_1 i t	 a_b...a_1 i t	  t[i]=v	*/
+
+SETLISTW,/*	w c	v_c...v_1 t	t		t[i+w*FPF]=v_i	*/
+SETLIST,/*	b c	v_c...v_1 t	t		t[i+b*FPF]=v_i	*/
+
+SETMAP,/*	b	v_b k_b ...v_0 k_0 t	t	t[k_i]=v_i	*/
+
+NEQOP,/*	-	y x		(x~=y)? 1 : nil			*/
+EQOP,/*		-	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		*/
+
+ONTJMPW,/*	w	x		(x!=nil)? x : -	(x!=nil)? PC+=w	*/
+ONTJMP,/*	b	x		(x!=nil)? x : -	(x!=nil)? PC+=b	*/
+ONFJMPW,/*	w	x		(x==nil)? x : -	(x==nil)? PC+=w	*/
+ONFJMP,/*	b	x		(x==nil)? x : -	(x==nil)? PC+=b	*/
+JMPW,/*		w	-		-		PC+=w		*/
+JMP,/*		b	-		-		PC+=b		*/
+IFFJMPW,/*	w	x		-		(x==nil)? PC+=w	*/
+IFFJMP,/*	b	x		-		(x==nil)? PC+=b	*/
+IFTUPJMPW,/*	w	x		-		(x!=nil)? PC-=w	*/
+IFTUPJMP,/*	b	x		-		(x!=nil)? PC-=b	*/
+IFFUPJMPW,/*	w	x		-		(x==nil)? PC-=w	*/
+IFFUPJMP,/*	b	x		-		(x==nil)? PC-=b	*/
+
+CLOSUREW,/*	w c	v_c...v_1	closure(CNST[w], v_c...v_1)	*/
+CLOSURE,/*	b c	v_c...v_1	closure(CNST[b], v_c...v_1)	*/
+
+SETLINEW,/*	w	-		-		LINE=w		*/
+SETLINE,/*	b	-		-		LINE=b		*/
+
+LONGARGW,/*	w	(add w*(1<<16) to arg of next instruction)	*/
+LONGARG,/*	b	(add b*(1<<16) to arg of next instruction)	*/
+
+CHECKSTACK /*	b  (assert #temporaries == b; only for internal debuging!) */
+
+} OpCode;
+
+
+#define RFIELDS_PER_FLUSH 32	/* records (SETMAP) */
+#define LFIELDS_PER_FLUSH 64    /* FPF - lists (SETLIST) */
+
+#define ZEROVARARG	64
+
+
+/* maximum value of an arg of 3 bytes; must fit in an "int" */
+#if MAX_INT < (1<<24)
+#define MAX_ARG	MAX_INT
+#else
+#define MAX_ARG	((1<<24)-1)
+#endif
+
+/* maximum value of a word of 2 bytes; cannot be bigger than MAX_ARG */
+#if MAX_ARG < (1<<16)
+#define MAX_WORD	MAX_ARG
+#else
+#define MAX_WORD	((1<<16)-1)
+#endif
+
+
+/* maximum value of a byte */
+#define MAX_BYTE	((1<<8)-1)
+
+
+#endif

lparser.h

@@ -0,0 +1,20 @@
+/*
+** $Id: lparser.h,v 1.2 1997/12/22 20:57:18 roberto Exp roberto $
+** LL(1) Parser and code generator for Lua
+** 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

lstate.c

@@ -0,0 +1,84 @@
+/*
+** $Id: lstate.c,v 1.9 1999/02/25 15:17:01 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"
+
+
+lua_State *lua_state = NULL;
+
+
+void lua_open (void)
+{
+  if (lua_state) return;
+  lua_state = luaM_new(lua_State);
+  L->Cstack.base = 0;
+  L->Cstack.lua2C = 0;
+  L->Cstack.num = 0;
+  L->errorJmp = NULL;
+  L->Mbuffer = NULL;
+  L->Mbuffbase = 0;
+  L->Mbuffsize = 0;
+  L->Mbuffnext = 0;
+  L->numCblocks = 0;
+  L->debug = 0;
+  L->callhook = NULL;
+  L->linehook = 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->IMtable = NULL;
+  L->refArray = NULL;
+  L->refSize = 0;
+  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
+}
+
+

lstate.h

@@ -0,0 +1,86 @@
+/*
+** $Id: lstate.h,v 1.15 1999/02/25 15:17:01 roberto Exp roberto $
+** Global State
+** See Copyright Notice in lua.h
+*/
+
+#ifndef lstate_h
+#define lstate_h
+
+#include <setjmp.h>
+
+#include "lobject.h"
+#include "lua.h"
+#include "luadebug.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;
+
+
+enum Status {LOCK, HOLD, FREE, COLLECTED};
+
+struct ref {
+  TObject o;
+  enum Status status;
+};
+
+
+struct lua_State {
+  /* thread-specific state */
+  struct Stack stack;  /* Lua stack */
+  struct C_Lua_Stack Cstack;  /* C2lua struct */
+  jmp_buf *errorJmp;  /* current error recover point */
+  char *Mbuffer;  /* global buffer */
+  int 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 */
+  int debug;
+  lua_CHFunction callhook;
+  lua_LHFunction linehook;
+  /* global state */
+  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 last_tag;  /* last used tag in IMtable */
+  struct ref *refArray;  /* locked objects */
+  int refSize;  /* size of refArray */
+  unsigned long GCthreshold;
+  unsigned long nblocks;  /* number of 'blocks' currently allocated */
+};
+
+
+#define L	lua_state
+
+
+#endif
+

lstring.c

@@ -0,0 +1,298 @@
+/*
+** $Id: lstring.c,v 1.18 1999/02/08 16:28:48 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_HASHSTR	31
+#define NUM_HASHUDATA	31
+#define NUM_HASHS  (NUM_HASHSTR+NUM_HASHUDATA)
+
+
+#define gcsizestring(l)	(1+(l/64))  /* "weight" for a string with length 'l' */
+
+
+
+static TaggedString EMPTY = {{NULL, 2}, 0L, 0,
+                            {{{LUA_T_NIL, {NULL}}, 0L}}, {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_s (char *s, long l) {
+  unsigned long h = 0;  /* seed */
+  while (l--)
+      h = h ^ ((h<<5)+(h>>2)+(unsigned char)*(s++));
+  return h;
+}
+
+static int newsize (stringtable *tb) {
+  int size = tb->size;
+  int realuse = 0;
+  int i;
+  /* count how many entries are really in use */
+  for (i=0; i<size; i++)
+    if (tb->hash[i] != NULL && tb->hash[i] != &EMPTY)
+      realuse++;
+  return luaO_redimension((realuse+1)*2);  /* +1 is the new element */
+}
+
+
+static void grow (stringtable *tb) {
+  int ns = newsize(tb);
+  TaggedString **newhash = luaM_newvector(ns, TaggedString *);
+  int i;
+  for (i=0; i<ns; i++)
+    newhash[i] = NULL;
+  /* rehash */
+  tb->nuse = 0;
+  for (i=0; i<tb->size; i++) {
+    if (tb->hash[i] != NULL && tb->hash[i] != &EMPTY) {
+      unsigned long h = tb->hash[i]->hash;
+      int h1 = h%ns;
+      while (newhash[h1]) {
+        h1 += (h&(ns-2)) + 1;  /* double hashing */
+        if (h1 >= ns) h1 -= ns;
+      }
+      newhash[h1] = tb->hash[i];
+      tb->nuse++;
+    }
+  }
+  luaM_free(tb->hash);
+  tb->size = ns;
+  tb->hash = newhash;
+}
+
+
+static TaggedString *newone_s (char *str, long l, unsigned long h) {
+  TaggedString *ts = (TaggedString *)luaM_malloc(sizeof(TaggedString)+l);
+  memcpy(ts->str, str, l);
+  ts->str[l] = 0;  /* ending 0 */
+  ts->u.s.globalval.ttype = LUA_T_NIL;  /* initialize global value */
+  ts->u.s.len = l;
+  ts->constindex = 0;
+  L->nblocks += gcsizestring(l);
+  ts->head.marked = 0;
+  ts->head.next = (GCnode *)ts;  /* signal it is in no list */
+  ts->hash = h;
+  return ts;
+}
+
+static TaggedString *newone_u (char *buff, int tag, unsigned long h) {
+  TaggedString *ts = luaM_new(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_s (char *str, long l, stringtable *tb) {
+  TaggedString *ts;
+  unsigned long h = hash_s(str, l);
+  int size = tb->size;
+  int j = -1;
+  int h1;
+  if ((long)tb->nuse*3 >= (long)size*2) {
+    grow(tb);
+    size = tb->size;
+  }
+  h1 = h%size;
+  while ((ts = tb->hash[h1]) != NULL) {
+    if (ts == &EMPTY)
+      j = h1;
+    else if (ts->u.s.len == l && (memcmp(str, ts->str, l) == 0))
+      return ts;
+    h1 += (h&(size-2)) + 1;  /* double hashing */
+    if (h1 >= size) h1 -= size;
+  }
+  /* not found */
+  if (j != -1)  /* is there an EMPTY space? */
+    h1 = j;
+  else
+    tb->nuse++;
+  ts = tb->hash[h1] = newone_s(str, l, h);
+  return ts;
+}
+
+
+static TaggedString *insert_u (void *buff, int tag, stringtable *tb) {
+  TaggedString *ts;
+  unsigned long h = (unsigned long)buff;
+  int size = tb->size;
+  int j = -1;
+  int h1;
+  if ((long)tb->nuse*3 >= (long)size*2) {
+    grow(tb);
+    size = tb->size;
+  }
+  h1 = h%size;
+  while ((ts = tb->hash[h1]) != NULL) {
+    if (ts == &EMPTY)
+      j = h1;
+    else if ((tag == ts->u.d.tag || tag == LUA_ANYTAG) && buff == ts->u.d.v)
+      return ts;
+    h1 += (h&(size-2)) + 1;  /* double hashing */
+    if (h1 >= size) h1 -= size;
+  }
+  /* not found */
+  if (j != -1)  /* is there an EMPTY space? */
+    h1 = j;
+  else
+    tb->nuse++;
+  ts = tb->hash[h1] = newone_u(buff, tag, h);
+  return ts;
+}
+
+
+TaggedString *luaS_createudata (void *udata, int tag) {
+  int t = ((unsigned)udata%NUM_HASHUDATA)+NUM_HASHSTR;
+  return insert_u(udata, tag, &L->string_root[t]);
+}
+
+TaggedString *luaS_newlstr (char *str, long l) {
+  int t = (l==0) ? 0 : ((int)((unsigned char)str[0]*l))%NUM_HASHSTR;
+  return insert_s(str, l, &L->string_root[t]);
+}
+
+TaggedString *luaS_new (char *str) {
+  return luaS_newlstr(str, strlen(str));
+}
+
+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(l->u.s.len);
+    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=NUM_HASHSTR; 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)
+        continue;
+      LUA_ASSERT(t->constindex == -1, "must be userdata");
+      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.s.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.s.globalval))
+      return g->str;
+  return NULL;
+}
+
+
+int luaS_globaldefined (char *name) {
+  TaggedString *ts = luaS_new(name);
+  return ts->u.s.globalval.ttype != LUA_T_NIL;
+}
+

lstring.h

@@ -0,0 +1,28 @@
+/*
+** $Id: lstring.h,v 1.6 1997/12/01 20:31:25 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_newlstr (char *str, long 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

lstrlib.c

@@ -0,0 +1,549 @@
+/*
+** $Id: lstrlib.c,v 1.27 1999/02/25 19:13:56 roberto Exp roberto $
+** 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);
+  memcpy(b, s, n);
+  luaL_addsize(n);
+}
+
+
+static void str_len (void)
+{
+  long l;
+  luaL_check_lstr(1, &l);
+  lua_pushnumber(l);
+}
+
+
+static void closeandpush (void) {
+  lua_pushlstring(luaL_buffer(), luaL_getsize());
+}
+
+
+static long posrelat (long pos, long len) {
+  /* relative string position: negative means back from end */
+  return (pos>=0) ? pos : len+pos+1;
+}
+
+
+static void str_sub (void) {
+  long l;
+  char *s = luaL_check_lstr(1, &l);
+  long start = posrelat(luaL_check_long(2), l);
+  long end = posrelat(luaL_opt_long(3, -1), l);
+  if (start < 1) start = 1;
+  if (end > l) end = l;
+  if (start <= end)
+    lua_pushlstring(s+start-1, end-start+1);
+  else lua_pushstring("");
+}
+
+
+static void str_lower (void) {
+  long l;
+  int i;
+  char *s = luaL_check_lstr(1, &l);
+  luaL_resetbuffer();
+  for (i=0; i<l; i++)
+    luaL_addchar(tolower((unsigned char)(s[i])));
+  closeandpush();
+}
+
+
+static void str_upper (void) {
+  long l;
+  int i;
+  char *s = luaL_check_lstr(1, &l);
+  luaL_resetbuffer();
+  for (i=0; i<l; i++)
+    luaL_addchar(toupper((unsigned char)(s[i])));
+  closeandpush();
+}
+
+static void str_rep (void)
+{
+  long l;
+  char *s = luaL_check_lstr(1, &l);
+  int n = luaL_check_int(2);
+  luaL_resetbuffer();
+  while (n-- > 0)
+    addnchar(s, l);
+  closeandpush();
+}
+
+
+static void str_byte (void) {
+  long l;
+  char *s = luaL_check_lstr(1, &l);
+  long pos = posrelat(luaL_opt_long(2, 1), l);
+  luaL_arg_check(0<pos && pos<=l, 2,  "out of range");
+  lua_pushnumber((unsigned char)s[pos-1]);
+}
+
+
+static void str_char (void) {
+  int i = 0;
+  luaL_resetbuffer();
+  while (lua_getparam(++i) != LUA_NOOBJECT) {
+    double c = luaL_check_number(i);
+    luaL_arg_check((unsigned char)c == c, i, "invalid value");
+    luaL_addchar((unsigned char)c);
+  }
+  closeandpush();
+}
+
+
+
+/*
+** {======================================================
+** PATTERN MATCHING
+** =======================================================
+*/
+
+#define MAX_CAPT 9
+
+struct Capture {
+  char *src_end;  /* end ('\0') of source string */
+  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;
+    if (l == -1) lua_error("unfinished capture");
+    lua_pushlstring(cap->capture[i].init, l);
+  }
+}
+
+
+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;
+  switch (tolower(cl)) {
+    case 'a' : res = isalpha(c); break;
+    case 'c' : res = iscntrl(c); break;
+    case 'd' : res = isdigit(c); break;
+    case 'l' : res = islower(c); break;
+    case 'p' : res = ispunct(c); break;
+    case 's' : res = isspace(c); break;
+    case 'u' : res = isupper(c); break;
+    case 'w' : res = isalnum(c); break;
+    case 'x' : res = isxdigit(c); break;
+    case 'z' : res = (c == '\0'); break;
+    default: return (cl == c);
+  }
+  return (islower(cl) ? res : !res);
+}
+
+
+int luaI_singlematch (int c, char *p, char **ep) {
+  switch (*p) {
+    case '.':  /* matches any char */
+      *ep = p+1;
+      return 1;
+    case '\0':  /* end of pattern; matches nothing */
+      *ep = p;
+      return 0;
+    case ESC:
+      if (*(++p) == '\0')
+        luaL_verror("incorrect pattern (ends with `%c')", ESC);
+      *ep = p+1;
+      return matchclass(c, (unsigned char)*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;
+      while (++p < end) {
+        if (*p == ESC) {
+          if (((p+1) < end) && matchclass(c, (unsigned char)*++p))
+            return sig;
+        }
+        else if ((*(p+1) == '-') && (p+2 < end)) {
+          p+=2;
+          if ((int)(unsigned char)*(p-2) <= c && c <= (int)(unsigned char)*p)
+            return sig;
+        }
+        else if ((unsigned char)*p == c) return sig;
+      }
+      return !sig;
+    }
+    default:
+      *ep = p+1;
+      return ((unsigned char)*p == c);
+  }
+}
+
+
+static char *matchbalance (char *s, int b, int e, struct Capture *cap) {
+  if (*s != b) return NULL;
+  else {
+    int cont = 1;
+    while (++s < cap->src_end) {
+      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);
+      int len = cap->capture[l].len;
+      *ep = p+1;
+      if (cap->src_end-s >= len && memcmp(cap->capture[l].init, s, len) == 0)
+        return s+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), cap);
+    }
+    else p--;  /* and go through */
+  }
+  /* "luaI_singlematch" sets "ep" (so must be called even at the end of "s" */
+  return (luaI_singlematch((unsigned char)*s, p, ep) && s<cap->src_end) ?
+                    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 == cap->src_end))
+        return s;
+      /* else go through */
+    default: {  /* it is a pattern item */
+      char *ep;  /* will point to what is next */
+      char *s1 = matchitem(s, p, cap, &ep);
+      switch (*ep) {
+        case '*': {  /* repetition */
+          char *res;
+          if (s1 && s1>s && ((res=match(s1, p, cap)) != NULL))
+            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)) != NULL))
+            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)) != NULL)
+            return res;
+          else if (s1 && s1>s) {
+            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) {
+  long l;
+  char *s = luaL_check_lstr(1, &l);
+  char *p = luaL_check_string(2);
+  long init = posrelat(luaL_opt_long(3, 1), l) - 1;
+  struct Capture cap;
+  luaL_arg_check(0 <= init && init <= l, 3, "out of range");
+  if (lua_getparam(4) != LUA_NOOBJECT ||
+      strpbrk(p, SPECIALS) == NULL) {  /* no special characters? */
+    char *s2 = strstr(s+init, p);
+    if (s2) {
+      lua_pushnumber(s2-s+1);
+      lua_pushnumber(s2-s+strlen(p));
+      return;
+    }
+  }
+  else {
+    int anchor = (*p == '^') ? (p++, 1) : 0;
+    char *s1=s+init;
+    cap.src_end = s+l;
+    do {
+      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++<cap.src_end && !anchor);
+  }
+  lua_pushnil();  /* if arrives here, it didn't find */
+}
+
+
+static void add_s (lua_Object newp, struct Capture *cap) {
+  if (lua_isstring(newp)) {
+    char *news = lua_getstring(newp);
+    int l = lua_strlen(newp);
+    int i;
+    for (i=0; i<l; i++) {
+      if (news[i] != ESC)
+        luaL_addchar(news[i]);
+      else {
+        i++;  /* skip ESC */
+        if (!isdigit((unsigned char)news[i]))
+          luaL_addchar(news[i]);
+        else {
+          int level = check_cap(news[i], cap);
+          addnchar(cap->capture[level].init, cap->capture[level].len);
+        }
+      }
+    }
+  }
+  else {  /* is a function */
+    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);
+    if (lua_isstring(res))
+      addnchar(lua_getstring(res), lua_strlen(res));
+    lua_endblock();
+  }
+}
+
+
+static void str_gsub (void) {
+  long srcl;
+  char *src = luaL_check_lstr(1, &srcl);
+  char *p = luaL_check_string(2);
+  lua_Object newp = lua_getparam(3);
+  int max_s = luaL_opt_int(4, srcl+1);
+  int anchor = (*p == '^') ? (p++, 1) : 0;
+  int n = 0;
+  struct Capture cap;
+  luaL_arg_check(lua_isstring(newp) || lua_isfunction(newp), 3,
+                 "string or function expected");
+  luaL_resetbuffer();
+  cap.src_end = src+srcl;
+  while (n < max_s) {
+    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 < cap.src_end)
+      luaL_addchar(*src++);
+    else break;
+    if (anchor) break;
+  }
+  addnchar(src, cap.src_end-src);
+  closeandpush();
+  lua_pushnumber(n);  /* number of substitutions */
+}
+
+/* }====================================================== */
+
+
+static void luaI_addquoted (int arg) {
+  long l;
+  char *s = luaL_check_lstr(arg, &l);
+  luaL_addchar('"');
+  while (l--) {
+    switch (*s) {
+      case '"':  case '\\':  case '\n':
+        luaL_addchar('\\');
+        luaL_addchar(*s);
+        break;
+      case '\0': addnchar("\\000", 4); break;
+      default: luaL_addchar(*s);
+    }
+    s++;
+  }
+  luaL_addchar('"');
+}
+
+/* maximum size of each format specification (such as '%-099.99d') */
+#define MAX_FORMAT 20
+
+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 */
+      struct Capture cap;
+      char form[MAX_FORMAT];  /* to store the format ('%...') */
+      char *buff;  /* to store the formatted item */
+      char *initf = strfrmt;
+      form[0] = '%';
+      if (isdigit((unsigned char)*initf) && *(initf+1) == '$') {
+        arg = *initf - '0';
+        initf += 2;  /* skip the 'n$' */
+      }
+      arg++;
+      cap.src_end = strfrmt+strlen(strfrmt)+1;
+      cap.level = 0;
+      strfrmt = match(initf, "[-+ #0]*(%d*)%.?(%d*)", &cap);
+      if (cap.capture[0].len > 2 || cap.capture[1].len > 2 ||  /* < 100? */
+          strfrmt-initf > MAX_FORMAT-2)
+        lua_error("invalid format (width or precision too long)");
+      strncpy(form+1, initf, strfrmt-initf+1); /* +1 to include conversion */
+      form[strfrmt-initf+2] = 0;
+      buff = luaL_openspace(512);  /* 512 > soid luaI_addquot99.99f', -1e308) */
+      switch (*strfrmt++) {
+        case 'c':  case 'd':  case 'i':
+          sprintf(buff, form, luaL_check_int(arg));
+          break;
+        case 'o':  case 'u':  case 'x':  case 'X':
+          sprintf(buff, form, (unsigned int)luaL_check_number(arg));
+          break;
+        case 'e':  case 'E': case 'f': case 'g': case 'G':
+          sprintf(buff, form, luaL_check_number(arg));
+          break;
+        case 'q':
+          luaI_addquoted(arg);
+          continue;  /* skip the "addsize" at the end */
+        case 's': {
+          long l;
+          char *s = luaL_check_lstr(arg, &l);
+          if (cap.capture[1].len == 0 && l >= 100) {
+            /* no precision and string is too big to be formatted;
+               keep original string */
+            addnchar(s, l);
+            continue;  /* skip the "addsize" at the end */
+          }
+          else {
+            sprintf(buff, form, s);
+            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},
+{"strchar", str_char},
+{"strrep", str_rep},
+{"ascii", str_byte},  /* for compatibility with 3.0 and earlier */
+{"strbyte", str_byte},
+{"format", str_format},
+{"strfind", str_find},
+{"gsub", str_gsub}
+};
+
+
+/*
+** Open string library
+*/
+void strlib_open (void)
+{
+  luaL_openlib(strlib, (sizeof(strlib)/sizeof(strlib[0])));
+}

ltable.c

@@ -0,0 +1,176 @@
+/*
+** $Id: ltable.c,v 1.20 1999/01/25 17:41:19 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 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));
+}
+
+
+Node *luaH_present (Hash *t, TObject *key) {
+  int tsize = nhash(t);
+  long int h = hashindex(key);
+  int h1 = h%tsize;
+  Node *n = node(t, h1);
+  /* keep looking until an entry with "ref" equal to key or nil */
+  while ((ttype(ref(n)) == ttype(key)) ? !luaO_equalval(key, ref(n))
+                                       : ttype(ref(n)) != LUA_T_NIL) {
+    h1 += (h&(tsize-2)) + 1;  /* double hashing */
+    if (h1 >= tsize) h1 -= tsize;
+    n = node(t, h1);
+  }
+  return n;
+}
+
+
+void luaH_free (Hash *frees) {
+  while (frees) {
+    Hash *next = (Hash *)frees->head.next;
+    L->nblocks -= gcsize(frees->nhash);
+    luaM_free(nodevector(frees));
+    luaM_free(frees);
+    frees = next;
+  }
+}
+
+
+static Node *hashnodecreate (int nhash) {
+  Node *v = luaM_newvector(nhash, Node);
+  int i;
+  for (i=0; i<nhash; i++)
+    ttype(ref(&v[i])) = ttype(val(&v[i])) = LUA_T_NIL;
+  return v;
+}
+
+
+Hash *luaH_new (int nhash) {
+  Hash *t = luaM_new(Hash);
+  nhash = luaO_redimension(nhash*3/2);
+  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;
+}
+
+
+static int newsize (Hash *t) {
+  Node *v = t->node;
+  int size = nhash(t);
+  int realuse = 0;
+  int i;
+  for (i=0; i<size; i++) {
+    if (ttype(val(v+i)) != LUA_T_NIL)
+      realuse++;
+  }
+  return luaO_redimension((realuse+1)*2);  /* +1 is the new element */
+}
+
+
+static void rehash (Hash *t) {
+  int nold = nhash(t);
+  Node *vold = nodevector(t);
+  int nnew = newsize(t);
+  int i;
+  nodevector(t) = hashnodecreate(nnew);
+  nhash(t) = nnew;
+  nuse(t) = 0;
+  for (i=0; i<nold; i++) {
+    Node *n = vold+i;
+    if (ttype(val(n)) != LUA_T_NIL) {
+      *luaH_present(t, ref(n)) = *n;  /* copy old node to new hash */
+      nuse(t)++;
+    }
+  }
+  L->nblocks += gcsize(nnew)-gcsize(nold);
+  luaM_free(vold);
+}
+
+
+void luaH_set (Hash *t, TObject *ref, TObject *val) {
+  Node *n = luaH_present(t, ref);
+  if (ttype(ref(n)) != LUA_T_NIL)
+    *val(n) = *val;
+  else {
+    TObject buff = *val;  /* rehash may invalidate this address */
+    if ((long)nuse(t)*3L > (long)nhash(t)*2L) {
+      rehash(t);
+      n = luaH_present(t, ref);
+    }
+    nuse(t)++;
+    *ref(n) = *ref;
+    *val(n) = buff;
+  }
+}
+
+
+int luaH_pos (Hash *t, TObject *r) {
+  Node *n = luaH_present(t, r);
+  luaL_arg_check(ttype(val(n)) != LUA_T_NIL, 2, "key not found");
+  return n-(t->node);
+}
+
+
+void luaH_setint (Hash *t, int ref, TObject *val) {
+  TObject index;
+  ttype(&index) = LUA_T_NUMBER;
+  nvalue(&index) = ref;
+  luaH_set(t, &index, val);
+}
+
+
+TObject *luaH_getint (Hash *t, int ref) {
+  TObject index;
+  ttype(&index) = LUA_T_NUMBER;
+  nvalue(&index) = ref;
+  return luaH_get(t, &index);
+}
+

ltable.h

@@ -0,0 +1,30 @@
+/*
+** $Id: ltable.h,v 1.10 1999/01/25 17:40:10 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)
+
+#define luaH_get(t,ref)	(val(luaH_present((t), (ref))))
+#define luaH_move(t,from,to)	(luaH_setint(t, to, luaH_getint(t, from)))
+
+Hash *luaH_new (int nhash);
+void luaH_free (Hash *frees);
+Node *luaH_present (Hash *t, TObject *key);
+void luaH_set (Hash *t, TObject *ref, TObject *val);
+int luaH_pos (Hash *t, TObject *r);
+void luaH_setint (Hash *t, int ref, TObject *val);
+TObject *luaH_getint (Hash *t, int ref);
+
+
+#endif

ltm.c

@@ -0,0 +1,247 @@
+/*
+** $Id: ltm.c,v 1.23 1999/02/25 19:13:56 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 = luaL_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 luaT_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 luaT_validevent (int t, int e) {  /* ORDER LUA_T */
+  return (t < LUA_T_NIL) ?  1 : luaT_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->last_tag = -(NUM_TAGS-1);
+  luaM_growvector(L->IMtable, 0, NUM_TAGS, struct IM, arrEM, MAX_INT);
+  for (t=L->last_tag; t<=0; t++)
+    init_entry(t);
+}
+
+
+int lua_newtag (void) {
+  --L->last_tag;
+  luaM_growvector(L->IMtable, -(L->last_tag), 1, struct IM, arrEM, 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 was not created by `newtag'", tag);
+}
+
+
+int lua_copytagmethods (int tagto, int tagfrom) {
+  int e;
+  checktag(tagto);
+  checktag(tagfrom);
+  for (e=0; e<IM_N; e++) {
+    if (luaT_validevent(tagto, e))
+      *luaT_getim(tagto, e) = *luaT_getim(tagfrom, e);
+  }
+  return tagto;
+}
+
+
+int luaT_effectivetag (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_INTERNALERROR("invalid type");
+#endif
+    default:
+      return t;
+  }
+}
+
+
+TObject *luaT_gettagmethod (int t, char *event) {
+  int e = luaI_checkevent(event, luaT_eventname);
+  checktag(t);
+  if (luaT_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 (!luaT_validevent(t, e))
+    luaL_verror("cannot change tag method `%.20s' for type `%.20s'%.20s",
+                luaT_eventname[e], luaO_typenames[-t],
+                (t == LUA_T_ARRAY || t == LUA_T_USERDATA) ? " with default tag"
+                                                          : "");
+  *func = *luaT_getim(t,e);
+  *luaT_getim(t, e) = temp;
+}
+
+
+char *luaT_travtagmethods (int (*fn)(TObject *)) {  /* ORDER IM */
+  int e;
+  for (e=IM_GETTABLE; e<=IM_FUNCTION; e++) {
+    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"
+#include "lstring.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 (luaT_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 (luaL_findstring(name, oldnames)) {
+    case 0: {  /* old error fallback */
+      TObject *em = &(luaS_new("_ERRORMESSAGE")->u.s.globalval);
+      oldfunc = *em;
+      *em = *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 = luaL_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
+

ltm.h

@@ -0,0 +1,62 @@
+/*
+** $Id: ltm.h,v 1.4 1997/11/26 18:53:45 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_effectivetag(o),(e)))
+
+extern char *luaT_eventname[];
+
+
+void luaT_init (void);
+void luaT_realtag (int tag);
+int luaT_effectivetag (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

lua.c

@@ -1,18 +1,26 @@
 /*
-** lua.c
-** Linguagem para Usuarios de Aplicacao
+** $Id: lua.c,v 1.18 1999/01/26 11:50:58 roberto Exp roberto $
+** Lua stand-alone interpreter
+** See Copyright Notice in lua.h
 */
 
-char *rcs_lua="$Id: lua.c,v 1.17 1997/06/18 21:20:45 roberto Exp roberto $";
 
+#include <signal.h>
 #include <stdio.h>
+#include <stdlib.h>
 #include <string.h>
 
 #include "lua.h"
-#include "auxlib.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
@@ -20,122 +28,166 @@ char *rcs_lua="$Id: lua.c,v 1.17 1997/06/18 21:20:45 roberto Exp roberto $";
 #endif
 
 
-#define DEBUG	0
+typedef void (*handler)(int);  /* type for signal actions */
 
-static void testC (void)
-{
-#if DEBUG
-#define getnum(s)	((*s++) - '0')
-#define getname(s)	(nome[0] = *s++, nome)
+static void laction (int i);
 
-  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;
+static lua_LHFunction old_linehook = NULL;
+static lua_CHFunction old_callhook = NULL;
 
-      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'");
-  }
-#else
-  lua_error("`testC' not active");
-#endif
+static handler lreset (void) {
+  return signal(SIGINT, laction);
 }
 
 
-static void manual_input (void)
-{
-  if (isatty(0)) {
-    char buffer[250];
-    while (fgets(buffer, sizeof(buffer), stdin) != 0) {
-      lua_beginblock();
-      lua_dostring(buffer);
-      lua_endblock();
-    }
+static void lstop (void) {
+  lua_setlinehook(old_linehook);
+  lua_setcallhook(old_callhook);
+  lreset();
+  lua_error("interrupted!");
+}
+
+
+static void laction (int i) {
+  old_linehook = lua_setlinehook((lua_LHFunction)lstop);
+  old_callhook = lua_setcallhook((lua_CHFunction)lstop);
+}
+
+
+static int ldo (int (*f)(char *), char *name) {
+  int res;
+  handler h = lreset();
+  res = f(name);  /* dostring | dofile */
+  signal(SIGINT, h);  /* restore old action */
+  return res;
+}
+
+
+static void print_message (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");
+}
+
+
+static void assign (char *arg) {
+  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);
   }
-  else
-    lua_dofile(NULL);  /* executes stdin as a file */
+}
+
+
+static void manual_input (int prompt) {
+  int cont = 1;
+  while (cont) {
+    char buffer[BUFSIZ];
+    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 >= BUFSIZ-1) {
+        fprintf(stderr, "lua: argument line too long\n");
+        break;
+      }
+      else buffer[i++] = (char)c;
+    }
+    buffer[i] = '\0';
+    ldo(lua_dostring, buffer);
+    lua_endblock();
+  }
+  printf("\n");
 }
 
 
 int main (int argc, char *argv[])
 {
   int i;
-  int result = 0;
-  iolib_open ();
-  strlib_open ();
-  mathlib_open ();
-  lua_register("testC", testC);
-  if (argc < 2)
-    manual_input();
+  lua_open();
+  lua_pushstring("> "); lua_setglobal("_PROMPT");
+  setlocale(LC_ALL, "");
+  lua_userinit();
+  if (argc < 2) {  /* no arguments? */
+    if (isatty(0)) {
+      printf("%s  %s\n", LUA_VERSION, LUA_COPYRIGHT);
+      manual_input(1);
+    }
+    else
+      ldo(lua_dofile, NULL);  /* executes stdin as a file */
+  }
   else for (i=1; i<argc; i++) {
-    if (strcmp(argv[i], "-") == 0)
-      manual_input();
-    else if (strcmp(argv[i], "-v") == 0)
-      printf("%s  %s\n(written by %s)\n\n",
-             LUA_VERSION, LUA_COPYRIGHT, LUA_AUTHORS);
-    else if ((strcmp(argv[i], "-e") == 0 && i++) || strchr(argv[i], '=')) {
-      if (lua_dostring(argv[i]) != 0) {
-        fprintf(stderr, "lua: error running argument `%s'\n", argv[i]);
-        return 1;
+    if (argv[i][0] == '-') {  /* option? */
+      switch (argv[i][1]) {
+        case 0:
+          ldo(lua_dofile, NULL);  /* executes stdin as a file */
+          break;
+        case 'i':
+          manual_input(1);
+          break;
+        case 'q':
+          manual_input(0);
+          break;
+        case 'd':
+          lua_setdebug(1);
+          break;
+        case 'v':
+          printf("%s  %s\n(written by %s)\n\n",
+                 LUA_VERSION, LUA_COPYRIGHT, LUA_AUTHORS);
+          break;
+        case 'e':
+          i++;
+          if (ldo(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 {
-      result = lua_dofile (argv[i]);
+      int result = ldo(lua_dofile, argv[i]);
       if (result) {
         if (result == 2) {
           fprintf(stderr, "lua: cannot execute file ");
           perror(argv[i]);
         }
-        return 1;
+        exit(1);
       }
     }
   }
-  return result;
+#ifdef DEBUG
+  lua_close();
+#endif
+  return 0;
 }
 

lua.h

@@ -1,16 +1,18 @@
 /*
-** LUA - An Extensible Extension Language
+** $Id: lua.h,v 1.30 1999/02/25 19:13:56 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
-** $Id: lua.h,v 4.10 1997/06/19 18:03:04 roberto Exp roberto $
+** www: http://www.tecgraf.puc-rio.br/lua/
+** See Copyright Notice at the end of this file
 */
 
 
 #ifndef lua_h
 #define lua_h
 
-#define LUA_VERSION	"Lua 3.0"
-#define LUA_COPYRIGHT	"Copyright (C) 1994-1997 TeCGraf"
+#define LUA_VERSION	"Lua 3.2 (beta)"
+#define LUA_COPYRIGHT	"Copyright (C) 1994-1999 TeCGraf, PUC-Rio"
 #define LUA_AUTHORS 	"W. Celes, R. Ierusalimschy & L. H. de Figueiredo"
 
 
@@ -18,19 +20,28 @@
 
 #define LUA_ANYTAG    (-1)
 
+typedef struct lua_State lua_State;
+extern lua_State *lua_state;
+
 typedef void (*lua_CFunction) (void);
 typedef unsigned int lua_Object;
 
-lua_Object     lua_settagmethod	(int tag, char *event);  /* In: new method */
+void	       lua_open			(void);
+void           lua_close		(void);
+lua_State      *lua_setstate		(lua_State *st);
+
+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_error		(char *s);
 int            lua_dofile 		(char *filename); /* Out: returns */
 int            lua_dostring 		(char *string); /* Out: returns */
+int            lua_dobuffer		(char *buff, int size, char *name);
+					  /* Out: returns */
 int            lua_callfunction		(lua_Object f);
 					  /* In: parameters; Out: returns */
 
@@ -49,16 +60,18 @@ int            lua_isnumber             (lua_Object object);
 int            lua_isstring             (lua_Object object);
 int            lua_isfunction           (lua_Object object);
 
-float          lua_getnumber 		(lua_Object object);
+double         lua_getnumber 		(lua_Object object);
 char          *lua_getstring 		(lua_Object object);
+long           lua_strlen 		(lua_Object object);
 lua_CFunction  lua_getcfunction 	(lua_Object object);
 void	      *lua_getuserdata		(lua_Object object);
 
 
 void 	       lua_pushnil 		(void);
-void           lua_pushnumber 		(float n);
+void           lua_pushnumber 		(double n);
+void           lua_pushlstring		(char *s, long len);
 void           lua_pushstring 		(char *s);
-void           lua_pushcfunction	(lua_CFunction fn);
+void           lua_pushcclosure		(lua_CFunction fn, int n);
 void           lua_pushusertag          (void *u, int tag);
 void           lua_pushobject       	(lua_Object object);
 
@@ -76,6 +89,9 @@ lua_Object     lua_rawgettable		(void); /* In: table, index */
 
 int            lua_tag			(lua_Object object);
 
+char          *lua_nextvar		(char *varname);  /* Out: value */
+int            lua_next			(lua_Object o, int i);
+						/* Out: ref, value */ 
 
 int            lua_ref			(int lock); /* In: value */
 lua_Object     lua_getref		(int ref);
@@ -87,7 +103,7 @@ long	       lua_collectgarbage	(long limit);
 
 
 /* =============================================================== */
-/* some useful macros */
+/* some useful macros/functions */
 
 #define lua_call(name)		lua_callfunction(lua_getglobal(name))
 
@@ -99,20 +115,19 @@ long	       lua_collectgarbage	(long limit);
 
 #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))
 
+lua_Object     lua_seterrormethod (void);  /* In: new method */
 
-/* ========================================================================== 
+/* ==========================================================================
 ** for compatibility with old versions. Avoid using these macros/functions
-** If your program does not use any of these, define LUA_COMPAT2_5 to 0
+** If your program does need any of these, define LUA_COMPAT2_5
 */
 
-#ifndef LUA_COMPAT2_5
-#define LUA_COMPAT2_5	1
-#endif
 
-
-#if LUA_COMPAT2_5
+#ifdef LUA_COMPAT2_5
 
 
 lua_Object     lua_setfallback		(char *event, lua_CFunction fallback);
@@ -139,3 +154,40 @@ lua_Object     lua_setfallback		(char *event, lua_CFunction fallback);
 #endif
 
 #endif
+
+
+
+/******************************************************************************
+* Copyright (c) 1994-1999 TeCGraf, PUC-Rio.  All rights reserved.
+* 
+* Permission is hereby granted, without written agreement and without license
+* or royalty fees, to use, copy, modify, and distribute this software and its
+* documentation for any purpose, including commercial applications, subject to
+* the following conditions:
+* 
+*  - The above copyright notice and this permission notice shall appear in all
+*    copies or substantial portions of this software.
+* 
+*  - The origin of this software must not be misrepresented; you must not
+*    claim that you wrote the original software. If you use this software in a
+*    product, an acknowledgment in the product documentation would be greatly
+*    appreciated (but it is not required).
+* 
+*  - Altered source versions must be plainly marked as such, and must not be
+*    misrepresented as being the original software.
+*    
+* 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 modifications.  In no event shall TeCGraf, PUC-Rio, or the
+* authors be held liable to any party for direct, indirect, special,
+* incidental, or consequential damages arising out of the use of this software
+* and its documentation.
+* 
+* The Lua language and this implementation have been entirely designed and
+* written by Waldemar Celes Filho, Roberto Ierusalimschy and
+* Luiz Henrique de Figueiredo at TeCGraf, PUC-Rio.
+*
+* This implementation contains no third-party code.
+******************************************************************************/

lua.stx

@@ -1,791 +0,0 @@
-%{
-
-char *rcs_luastx = "$Id: lua.stx,v 3.46 1997/03/31 14:19:01 roberto Exp roberto $";
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include "luadebug.h"
-#include "luamem.h"
-#include "lex.h"
-#include "opcode.h"
-#include "hash.h"
-#include "inout.h"
-#include "tree.h"
-#include "table.h"
-#include "lua.h"
-#include "func.h"
-
-/* to avoid warnings generated by yacc */
-int yyparse (void);
-#define malloc luaI_malloc
-#define realloc luaI_realloc
-#define free luaI_free
-
-#ifndef LISTING
-#define LISTING 0
-#endif
-
-#ifndef CODE_BLOCK
-#define CODE_BLOCK 256
-#endif
-static int   maxcode;
-static int   maxmain;
-static int   maxcurr;
-static Byte  *funcCode = NULL;
-static Byte **initcode;
-static Byte  *basepc;
-static int   maincode;
-static int   pc;
-
-
-#define MAXVAR 32
-static Long    varbuffer[MAXVAR];    /* variables in an assignment list;
-				it's long to store negative Word values */
-static int     nvarbuffer=0;	     /* number of variables at a list */
-
-#define MAXLOCALS 32
-static TaggedString *localvar[MAXLOCALS];  /* store local variable names */
-static int     nlocalvar=0;	     /* number of local variables */
-
-#define MAXFIELDS FIELDS_PER_FLUSH*2
-
-int lua_debug = 0;
-
-/* Internal functions */
-
-static void yyerror (char *s)
-{
-  luaI_syntaxerror(s);
-}
-
-static void check_space (int i)
-{
-  if (pc+i>maxcurr-1)  /* 1 byte free to code HALT of main code */
-    maxcurr = growvector(&basepc, maxcurr, Byte, codeEM, MAX_INT);
-}
-
-static void code_byte (Byte c)
-{
- check_space(1);
- basepc[pc++] = c;
-}
-
-static void code_word (Word n)
-{
-  check_space(sizeof(Word));
-  memcpy(basepc+pc, &n, sizeof(Word));
-  pc += sizeof(Word);
-}
-
-static void code_float (real n)
-{
-  check_space(sizeof(real));
-  memcpy(basepc+pc, &n, sizeof(real));
-  pc += sizeof(real);
-}
-
-static void code_code (TFunc *tf)
-{
-  check_space(sizeof(TFunc *));
-  memcpy(basepc+pc, &tf, sizeof(TFunc *));
-  pc += sizeof(TFunc *);
-}
-
-static void code_word_at (Byte *p, int n)
-{
-  Word w = n;
-  if (w != n)
-    yyerror("block too big");
-  memcpy(p, &w, sizeof(Word));
-}
-
-static void flush_record (int n)
-{
-  if (n == 0) return;
-  code_byte(STOREMAP);
-  code_byte(n);
-}
-
-static void flush_list (int m, int n)
-{
-  if (n == 0) return;
-  if (m == 0)
-    code_byte(STORELIST0); 
-  else
-  if (m < 255)
-  {
-    code_byte(STORELIST);
-    code_byte(m);
-  }
-  else
-   yyerror ("list constructor too long");
-  code_byte(n);
-}
-
-static void store_localvar (TaggedString *name, int n)
-{
- if (nlocalvar+n < MAXLOCALS)
-  localvar[nlocalvar+n] = name;
- else
-  yyerror ("too many local variables");
- if (lua_debug)
-   luaI_registerlocalvar(name, lua_linenumber);
-}
-
-static void add_localvar (TaggedString *name)
-{
-  store_localvar(name, 0);
-  nlocalvar++;
-}
-
-static void add_varbuffer (Long var)
-{
- if (nvarbuffer < MAXVAR)
-  varbuffer[nvarbuffer++] = var;
- else
-  yyerror ("variable buffer overflow");
-}
-
-static void code_string (Word w)
-{
-  code_byte(PUSHSTRING);
-  code_word(w);
-}
-
-static void code_constant (TaggedString *s)
-{
-  code_string(luaI_findconstant(s));
-}
-
-static void code_number (float f)
-{ 
-  Word i;
-  if (f >= 0 && f <= (float)MAX_WORD && (float)(i=(Word)f) == f) {
-   /* f has an (short) integer value */
-   if (i <= 2) code_byte(PUSH0 + i);
-   else if (i <= 255)
-   {
-    code_byte(PUSHBYTE);
-    code_byte(i);
-   }
-   else
-   {
-    code_byte(PUSHWORD);
-    code_word(i);
-   }
-  }
-  else
-  {
-   code_byte(PUSHFLOAT);
-   code_float(f);
-  }
-}
-
-/*
-** Search a local name and if find return its index. If do not find return -1
-*/
-static int lua_localname (TaggedString *n)
-{
- int i;
- for (i=nlocalvar-1; i >= 0; i--)
-  if (n == localvar[i]) return i;	/* local var */
- return -1;		        /* global var */
-}
-
-/*
-** Push a variable given a number. If number is positive, push global variable
-** indexed by (number -1). If negative, push local indexed by ABS(number)-1.
-** Otherwise, if zero, push indexed variable (record).
-*/
-static void lua_pushvar (Long number)
-{ 
- if (number > 0)	/* global var */
- {
-  code_byte(PUSHGLOBAL);
-  code_word(number-1);
- }
- else if (number < 0)	/* local var */
- {
-  number = (-number) - 1;
-  if (number < 10) code_byte(PUSHLOCAL0 + number);
-  else
-  {
-   code_byte(PUSHLOCAL);
-   code_byte(number);
-  }
- }
- else
- {
-  code_byte(PUSHINDEXED);
- }
-}
-
-static void lua_codeadjust (int n)
-{
- if (n+nlocalvar == 0)
-   code_byte(ADJUST0);
- else
- {
-   code_byte(ADJUST);
-   code_byte(n+nlocalvar);
- }
-}
-
-static void change2main (void)
-{
-  /* (re)store main values */
-  pc=maincode; basepc=*initcode; maxcurr=maxmain;
-  nlocalvar=0;
-}
-
-static void savemain (void)
-{
-  /* save main values */
-  maincode=pc; *initcode=basepc; maxmain=maxcurr;
-}
-
-static void init_func (void)
-{
-  if (funcCode == NULL)	/* first function */
-  {
-   funcCode = newvector(CODE_BLOCK, Byte);
-   maxcode = CODE_BLOCK;
-  }
-  savemain();  /* save main values */
-  /* set func values */
-  pc=0; basepc=funcCode; maxcurr=maxcode; 
-  nlocalvar = 0;
-  luaI_codedebugline(lua_linenumber);
-}
-
-static void codereturn (void)
-{
-  if (nlocalvar == 0)
-    code_byte(RETCODE0);
-  else
-  {
-    code_byte(RETCODE);
-    code_byte(nlocalvar);
-  }
-}
-
-void luaI_codedebugline (int line)
-{
-  static int lastline = 0;
-  if (lua_debug && line != lastline)
-  {
-    code_byte(SETLINE);
-    code_word(line);
-    lastline = line;
-  }
-}
-
-static int adjust_functioncall (Long exp, int i)
-{
-  if (exp <= 0)
-    return -exp; /* exp is -list length */
-  else
-  {
-    int temp = basepc[exp];
-    basepc[exp] = i;
-    return temp+i;
-  }
-}
-
-static void adjust_mult_assign (int vars, Long exps, int temps)
-{
-  if (exps > 0)
-  { /* must correct function call */
-    int diff = vars - basepc[exps];
-    if (diff >= 0)
-      adjust_functioncall(exps, diff);
-    else
-    {
-      adjust_functioncall(exps, 0);
-      lua_codeadjust(temps);
-    }
-  }
-  else if (vars != -exps)
-    lua_codeadjust(temps);
-}
-
-static int close_parlist (int dots)
-{
-  if (!dots)
-    lua_codeadjust(0);
-  else
-  {
-    code_byte(VARARGS);
-    code_byte(nlocalvar);
-    add_localvar(luaI_createfixedstring("arg"));
-  }
-  return lua_linenumber;
-}
-
-static void storesinglevar (Long v)
-{
- if (v > 0)		/* global var */
- {
-   code_byte(STOREGLOBAL);
-   code_word(v-1);
- }
- else if (v < 0)      /* local var */
- {
-   int number = (-v) - 1;
-   if (number < 10) code_byte(STORELOCAL0 + number);
-   else
-   {
-     code_byte(STORELOCAL);
-     code_byte(number);
-   }
- }
- else 
-   code_byte(STOREINDEXED0);
-}
-
-static void lua_codestore (int i)
-{
- if (varbuffer[i] != 0)  /* global or local var */
-  storesinglevar(varbuffer[i]);
- else				  /* indexed var */
- {
-  int j;
-  int upper=0;     	/* number of indexed variables upper */
-  int param;		/* number of itens until indexed expression */
-  for (j=i+1; j <nvarbuffer; j++)
-   if (varbuffer[j] == 0) upper++;
-  param = upper*2 + i;
-  if (param == 0)
-   code_byte(STOREINDEXED0);
-  else
-  {
-   code_byte(STOREINDEXED);
-   code_byte(param);
-  }
- }
-}
-
-static void codeIf (Long thenAdd, Long elseAdd)
-{
-  Long elseinit = elseAdd+sizeof(Word)+1;
-  if (pc == elseinit)		/* no else */
-  {
-    pc -= sizeof(Word)+1;
-    elseinit = pc;
-  }
-  else
-  {
-    basepc[elseAdd] = JMP;
-    code_word_at(basepc+elseAdd+1, pc-elseinit);
-  }
-  basepc[thenAdd] = IFFJMP;
-  code_word_at(basepc+thenAdd+1,elseinit-(thenAdd+sizeof(Word)+1));
-}
-
-
-/*
-** Parse LUA code.
-*/
-void lua_parse (TFunc *tf)
-{
- initcode = &(tf->code);
- *initcode = newvector(CODE_BLOCK, Byte);
- maincode = 0; 
- maxmain = CODE_BLOCK;
- change2main();
- if (yyparse ()) lua_error("parse error");
- savemain();
- (*initcode)[maincode++] = RETCODE0;
- tf->size = maincode;
-#if LISTING
-{ static void PrintCode (Byte *c, Byte *end);
- PrintCode(*initcode,*initcode+maincode); }
-#endif
-}
-
-
-%}
-
-
-%union 
-{
- int   vInt;
- float vFloat;
- char *pChar;
- Word  vWord;
- Long  vLong;
- TFunc *pFunc;
- TaggedString *pTStr;
-}
-
-%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 <vFloat> NUMBER
-%token <vWord>  STRING
-%token <pTStr>  NAME 
-
-%type <vLong> PrepJump
-%type <vLong> exprlist, exprlist1  /* if > 0, points to function return
-	counter (which has list length); if <= 0, -list lenght */
-%type <vLong> functioncall, expr  /* if != 0, points to function return
-					 counter */
-%type <vInt>  varlist1, funcParams, funcvalue
-%type <vInt>  fieldlist, localdeclist, decinit
-%type <vInt>  ffieldlist, ffieldlist1, semicolonpart
-%type <vInt>  lfieldlist, lfieldlist1
-%type <vInt>  parlist, parlist1, par
-%type <vLong> var, singlevar, funcname
-%type <pFunc> body
-
-%left AND OR
-%left EQ NE '>' '<' LE GE
-%left CONC
-%left '+' '-'
-%left '*' '/'
-%left UNARY NOT
-%right '^'
-
-
-%% /* beginning of rules section */
-
-chunk	: chunklist ret ;
-
-chunklist : /* empty */
-	  | chunklist stat sc
-	  | chunklist function
-	  ;
-
-function     : FUNCTION funcname body 	 
-	       { 
-		code_byte(PUSHFUNCTION);
-		code_code($3);
-		storesinglevar($2);
-	       }
-	       ;
-
-funcname	: var { $$ =$1; init_func(); }
-		| varexp ':' NAME
-	{
-	  code_constant($3);
-	  $$ = 0;  /* indexed variable */
-	  init_func();
-	  add_localvar(luaI_createfixedstring("self"));
-	}
-		;
-
-body :  '(' parlist ')' block END
-	{
-          codereturn();
-	  $$ = new(TFunc);
-          luaI_initTFunc($$);
-	  $$->size = pc;
-	  $$->code = newvector(pc, Byte);
-	  $$->lineDefined = $2;
-	  memcpy($$->code, basepc, pc*sizeof(Byte));
-          if (lua_debug)
-            luaI_closelocalvars($$);
-	  /* save func values */
-	  funcCode = basepc; maxcode=maxcurr;
-#if LISTING
-                PrintCode(funcCode,funcCode+pc);
-#endif
-	  change2main();  /* change back to main code */
-	}
-		;
-
-statlist : /* empty */
-	 | statlist stat sc
-	 ;
-
-sc	 : /* empty */ | ';' ;
-
-stat   : IF expr1 THEN PrepJump block PrepJump elsepart END
-	{ codeIf($4, $6); }
-
-       | WHILE {$<vLong>$=pc;} expr1 DO PrepJump block PrepJump END
-       {
-        basepc[$5] = IFFJMP;
-	code_word_at(basepc+$5+1, pc - ($5 + sizeof(Word)+1));
-        basepc[$7] = UPJMP;
-	code_word_at(basepc+$7+1, pc - ($<vLong>2));
-       }
-     
-       | REPEAT {$<vLong>$=pc;} block UNTIL expr1 PrepJump
-       {
-        basepc[$6] = IFFUPJMP;
-	code_word_at(basepc+$6+1, pc - ($<vLong>2));
-       }
-
-       | varlist1 '=' exprlist1
-       {
-        {
-         int i;
-         adjust_mult_assign(nvarbuffer, $3, $1 * 2 + nvarbuffer);
-	 for (i=nvarbuffer-1; i>=0; i--)
-	  lua_codestore (i);
-	 if ($1 > 1 || ($1 == 1 && varbuffer[0] != 0))
-	  lua_codeadjust (0);
-	}
-       } 
-       | functioncall {;}
-       | LOCAL localdeclist decinit
-	{ nlocalvar += $2;
-	  adjust_mult_assign($2, $3, 0);
-	}
-       ;
-
-elsepart : /* empty */
-	 | ELSE block
-         | ELSEIF expr1 THEN PrepJump block PrepJump elsepart
-	{ codeIf($4, $6); }
-         ;
-     
-block    : {$<vInt>$ = nlocalvar;} statlist ret 
-         {
-	  if (nlocalvar != $<vInt>1)
-	  {
-           if (lua_debug)
-             for (; nlocalvar > $<vInt>1; nlocalvar--)
-               luaI_unregisterlocalvar(lua_linenumber);
-           else
-             nlocalvar = $<vInt>1;
-	   lua_codeadjust (0);
-	  }
-         }
-         ;
-
-ret	: /* empty */
-        | RETURN exprlist sc
-          {
-	   adjust_functioncall($2, MULT_RET);
-           codereturn();
-          }
-	;
-
-PrepJump : /* empty */
-	 { 
-	  $$ = pc;
-	  code_byte(0);		/* open space */
-	  code_word (0);
-         }
-	 ;
-	   
-expr1	 : expr { adjust_functioncall($1, 1); }
-	 ;
-				
-expr :  '(' expr ')'  { $$ = $2; }
-     |  expr1 EQ  expr1	{ code_byte(EQOP);   $$ = 0; }
-     |	expr1 '<' expr1	{ code_byte(LTOP);   $$ = 0; }
-     |	expr1 '>' expr1	{ code_byte(GTOP);   $$ = 0; }
-     |	expr1 NE  expr1	{ code_byte(EQOP); code_byte(NOTOP); $$ = 0; }
-     |	expr1 LE  expr1	{ code_byte(LEOP);   $$ = 0; }
-     |	expr1 GE  expr1	{ code_byte(GEOP);   $$ = 0; }
-     |	expr1 '+' expr1 { code_byte(ADDOP);  $$ = 0; }
-     |	expr1 '-' expr1 { code_byte(SUBOP);  $$ = 0; }
-     |	expr1 '*' expr1 { code_byte(MULTOP); $$ = 0; }
-     |	expr1 '/' expr1 { code_byte(DIVOP);  $$ = 0; }
-     |	expr1 '^' expr1 { code_byte(POWOP);  $$ = 0; }
-     |	expr1 CONC expr1 { code_byte(CONCOP);  $$ = 0; }
-     |	'-' expr1 %prec UNARY	{ code_byte(MINUSOP); $$ = 0;}
-     | table { $$ = 0; }
-     |  varexp          { $$ = 0;}
-     |  NUMBER          { code_number($1); $$ = 0; }
-     |  STRING
-     {
-       code_string($1);
-       $$ = 0;
-     }
-     |	NIL		{code_byte(PUSHNIL); $$ = 0; }
-     |  functioncall    { $$ = $1; }
-     |	NOT expr1	{ code_byte(NOTOP);  $$ = 0;}
-     |	expr1 AND PrepJump {code_byte(POP); } expr1
-     { 
-      basepc[$3] = ONFJMP;
-      code_word_at(basepc+$3+1, pc - ($3 + sizeof(Word)+1));
-      $$ = 0;
-     }
-     |	expr1 OR PrepJump {code_byte(POP); } expr1	
-     { 
-      basepc[$3] = ONTJMP;
-      code_word_at(basepc+$3+1, pc - ($3 + sizeof(Word)+1));
-      $$ = 0;
-     }
-     ;
-
-table :
-     {
-      code_byte(CREATEARRAY);
-      $<vLong>$ = pc; code_word(0);
-     }
-      '{' fieldlist '}'
-     {
-      code_word_at(basepc+$<vLong>1, $3);
-     }
-         ;
-
-functioncall : funcvalue funcParams
-	{
-	  code_byte(CALLFUNC);
-	  code_byte($1+$2);
-	  $$ = pc;
-	  code_byte(0);  /* may be modified by other rules */
-	}
-	     ;
-
-funcvalue    : varexp { $$ = 0; }
-	     | varexp ':' NAME 
-	     { 
-               code_byte(PUSHSELF); 
-	       code_word(luaI_findconstant($3));
-               $$ = 1;
-	     }
-	     ;
-
-funcParams :	'(' exprlist ')'
-	{ $$ = adjust_functioncall($2, 1); }
-	|	table  { $$ = 1; }
-	;
-
-exprlist  :	/* empty */		{ $$ = 0; }
-	  |	exprlist1		{ $$ = $1; }
-	  ;
-		
-exprlist1 :  expr	{ if ($1 != 0) $$ = $1; else $$ = -1; }
-	  |  exprlist1 ',' { $<vLong>$ = adjust_functioncall($1, 1); } expr 
-	{
-	  if ($4 == 0) $$ = -($<vLong>3 + 1);  /* -length */
-	  else
-	  {
-	    adjust_functioncall($4, $<vLong>3);
-	    $$ = $4;
-	  }
-	}
-	  ;
-
-parlist  :	/* empty */ { $$ = close_parlist(0); }
-	  |	parlist1    { $$ = close_parlist($1); }
-	  ;
-		
-parlist1 :	par		  { $$ = $1; }
-	  |	parlist1 ',' par
-	{
-	  if ($1)
-            lua_error("invalid parameter list");
-          $$ = $3;
-	}
-	  ;
-
-par : NAME	{ add_localvar($1); $$ = 0; }
-    | DOTS	{ $$ = 1; }
-    ;
-		
-fieldlist  : lfieldlist
-  	     { flush_list($1/FIELDS_PER_FLUSH, $1%FIELDS_PER_FLUSH); }
-	     semicolonpart
-	     { $$ = $1+$3; }
-	   | ffieldlist1 lastcomma
-	     { $$ = $1; flush_record($1%FIELDS_PER_FLUSH); }
-	   ;
-
-semicolonpart : /* empty */
-	        { $$ = 0; }
-	      | ';' ffieldlist
-	        { $$ = $2; flush_record($2%FIELDS_PER_FLUSH); }
-	      ;
-
-lastcomma  : /* empty */ 
-	   | ','
-	   ;
-
-ffieldlist  : /* empty */ { $$ = 0; }
-            | ffieldlist1 lastcomma { $$ = $1; }
-            ;   
-
-ffieldlist1 : ffield			{$$=1;}
-	   | ffieldlist1 ',' ffield	
-		{
-		  $$=$1+1;
-		  if ($$%FIELDS_PER_FLUSH == 0) flush_record(FIELDS_PER_FLUSH);
-		}
-	   ; 
-
-ffield      : ffieldkey '=' expr1
-           ;
-
-ffieldkey   : '[' expr1 ']'
-	    | NAME { code_constant($1); }
-	    ;
-
-lfieldlist  : /* empty */ { $$ = 0; }
-	    | lfieldlist1 lastcomma { $$ = $1; }
-	    ;
-
-lfieldlist1 : expr1  {$$=1;}
-	    | lfieldlist1 ',' expr1
-		{
-		  $$=$1+1;
-		  if ($$%FIELDS_PER_FLUSH == 0) 
-		    flush_list($$/FIELDS_PER_FLUSH - 1, FIELDS_PER_FLUSH);
-		}
-            ;
-
-varlist1  :	var			
-	  {
-	   nvarbuffer = 0; 
-	   add_varbuffer($1);
-	   $$ = ($1 == 0) ? 1 : 0;
-	  }
-	  |	varlist1 ',' var	
-	  { 
-	   add_varbuffer($3);
-	   $$ = ($3 == 0) ? $1 + 1 : $1;
-	  }
-	  ;
-		
-var	  :	singlevar { $$ = $1; }
-	  |	varexp '[' expr1 ']' 
-	  {
-	   $$ = 0;		/* indexed variable */
-	  }
-	  |	varexp '.' NAME
-	  {
-	    code_constant($3);
-	    $$ = 0;		/* indexed variable */
-	  }
-	  ;
-		
-singlevar :	NAME
-	  {
-	   int local = lua_localname($1);
-	   if (local == -1)	/* global var */
-	    $$ = luaI_findsymbol($1)+1;  /* return positive value */
-           else
-	    $$ = -(local+1);		/* return negative value */
-	  }
-	  ;
-
-varexp	: var { lua_pushvar($1); }
-	;
-	  
-localdeclist  : NAME {store_localvar($1, 0); $$ = 1;}
-     	  | localdeclist ',' NAME 
-	    {
-	     store_localvar($3, $1);
-	     $$ = $1+1;
-	    }
-	  ;
-		
-decinit	  : /* empty */  { $$ = 0; }
-	  | '=' exprlist1 { $$ = $2; }
-	  ;
-	  
-%%

luadebug.h

@@ -1,14 +1,14 @@
 /*
-** LUA - Linguagem para Usuarios de Aplicacao
-** Grupo de Tecnologia em Computacao Grafica
-** TeCGraf - PUC-Rio
-** $Id: luadebug.h,v 1.5 1996/02/08 17:03:20 roberto Exp roberto $
+** $Id: luadebug.h,v 1.5 1999/02/04 17:47:59 roberto Exp roberto $
+** Debugging API
+** See Copyright Notice in lua.h
 */
 
 
 #ifndef luadebug_h
 #define luadebug_h
 
+
 #include "lua.h"
 
 typedef lua_Object lua_Function;
@@ -17,15 +17,18 @@ 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);
+void lua_funcinfo (lua_Object func, char **source, 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;
+int lua_nups (lua_Function func);
+
+lua_LHFunction lua_setlinehook (lua_LHFunction func);
+lua_CHFunction lua_setcallhook (lua_CHFunction func);
+int lua_setdebug (int debug);
+
 
 #endif

lualib.h

@@ -1,29 +1,35 @@
 /*
-** Libraries to be used in LUA programs
-** Grupo de Tecnologia em Computacao Grafica
-** TeCGraf - PUC-Rio
-** $Id: lualib.h,v 1.12 1997/03/18 15:30:50 roberto Exp roberto $
+** $Id: lualib.h,v 1.4 1998/06/19 16:14:09 roberto Exp roberto $
+** Lua standard libraries
+** See Copyright Notice in lua.h
 */
 
+
 #ifndef lualib_h
 #define lualib_h
 
 #include "lua.h"
 
-void iolib_open   (void);
-void strlib_open  (void);
-void mathlib_open (void);
+void lua_iolibopen   (void);
+void lua_strlibopen  (void);
+void lua_mathlibopen (void);
+void lua_dblibopen   (void);
+
+
+void lua_userinit (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) */
+/* Auxiliary functions (private) */
 
-char *luaI_addchar (int c);
-void luaI_emptybuff (void);
-void luaI_addquoted (char *s);
-
-char *luaL_item_end (char *p);
-int luaL_singlematch (int c, char *p);
+int luaI_singlematch (int c, char *p, char **ep);
 
 #endif
 

luamem.c

@@ -1,159 +0,0 @@
-/*
-** mem.c
-** TecCGraf - PUC-Rio
-*/
-
-char *rcs_luamem = "$Id: luamem.c,v 1.15 1997/03/31 14:17:09 roberto Exp roberto $";
-
-#include <stdlib.h>
-
-#include "luamem.h"
-#include "lua.h"
-
-
-#define DEBUG 0
-
-#if !DEBUG
-
-void luaI_free (void *block)
-{
-  if (block)
-  {
-    *((char *)block) = -1;  /* to catch errors */
-    free(block);
-  }
-}
-
-
-void *luaI_realloc (void *oldblock, unsigned long size)
-{
-  void *block;
-  size_t s = (size_t)size;
-  if (s != size)
-    lua_error("Allocation Error: Block too big");
-  block = oldblock ? realloc(oldblock, s) : malloc(s);
-  if (block == NULL)
-    lua_error(memEM);
-  return block;
-}
-
-
-int luaI_growvector (void **block, unsigned long nelems, int size,
-                       char *errormsg, unsigned long limit)
-{
-  if (nelems >= limit)
-    lua_error(errormsg);
-  nelems = (nelems == 0) ? 20 : nelems*2;
-  if (nelems > limit)
-    nelems = limit;
-  *block = luaI_realloc(*block, nelems*size);
-  return (int)nelems;
-}
-
-
-void* luaI_buffer (unsigned long size)
-{
-  static unsigned long buffsize = 0;
-  static char* buffer = NULL;
-  if (size > buffsize)
-    buffer = luaI_realloc(buffer, buffsize=size);
-  return buffer;
-}
-
-#else
-/* DEBUG */
-
-#include <stdio.h>
-
-# define assert(ex)    {if (!(ex)){(void)fprintf(stderr, \
-    "Assertion failed: file \"%s\", line %d\n", __FILE__, __LINE__);exit(1);}}
-
-#define MARK    55
-
-static unsigned long numblocks = 0;
-static unsigned long totalmem = 0;
-
-
-static void message (void)
-{
-#define inrange(x,y)   ((x) < (((y)*3)/2)  && (x) > (((y)*2)/3))
-  static int count = 0;
-  static unsigned long lastnumblocks = 0;
-  static unsigned long lasttotalmem = 0;
-  if (!inrange(numblocks, lastnumblocks) || !inrange(totalmem, lasttotalmem)
-       || count++ >= 5000)
-  {
-    fprintf(stderr,"blocks = %lu  mem = %luK\n", numblocks, totalmem/1000);
-    count = 0;
-    lastnumblocks = numblocks;
-    lasttotalmem = totalmem;
-  }
-}
-
-
-void luaI_free (void *block)
-{
-  if (block)
-  {
-    unsigned long *b = (unsigned long *)block - 1;
-    unsigned long size = *b;
-    assert(*(((char *)b)+size+sizeof(unsigned long)) == MARK);
-    numblocks--;
-    totalmem -= size;
-    free(b);
-    message();
-  }
-}
-
-
-void *luaI_realloc (void *oldblock, unsigned long size)
-{
-  unsigned long *block;
-  unsigned long realsize = sizeof(unsigned long)+size+sizeof(char);
-  if (realsize != (size_t)realsize)
-    lua_error("Allocation Error: Block too big");
-  if (oldblock)
-  {
-    unsigned long *b = (unsigned long *)oldblock - 1;
-    unsigned long oldsize = *b;
-    assert(*(((char *)b)+oldsize+sizeof(unsigned long)) == MARK);
-    totalmem -= oldsize;
-    numblocks--;
-    block = (unsigned long *)realloc(b, realsize);
-  }
-  else
-    block = (unsigned long *)malloc(realsize);
-  if (block == NULL)
-    lua_error("not enough memory");
-  totalmem += size;
-  numblocks++;
-  *block = size;
-  *(((char *)block)+size+sizeof(unsigned long)) = MARK;
-  message();
-  return block+1;
-}
-
-
-int luaI_growvector (void **block, unsigned long nelems, int size,
-                       char *errormsg, unsigned long limit)
-{
-  if (nelems >= limit)
-    lua_error(errormsg);
-  nelems = (nelems == 0) ? 20 : nelems*2;
-  if (nelems > limit)
-    nelems = limit;
-  *block = luaI_realloc(*block, nelems*size);
-  return (int)nelems;
-}
-
-
-void* luaI_buffer (unsigned long size)
-{
-  static unsigned long buffsize = 0;
-  static char* buffer = NULL;
-  if (size > buffsize)
-    buffer = luaI_realloc(buffer, buffsize=size);
-  return buffer;
-}
-
-#endif

luamem.h

@@ -1,39 +0,0 @@
-/*
-** mem.c
-** memory manager for lua
-** $Id: luamem.h,v 1.8 1996/05/24 14:31:10 roberto Exp roberto $
-*/
- 
-#ifndef luamem_h
-#define luamem_h
-
-#ifndef NULL
-#define NULL 0
-#endif
-
-
-/* memory error messages */
-#define codeEM   "code size overflow"
-#define symbolEM   "symbol table overflow"
-#define constantEM   "constant table overflow"
-#define stackEM   "stack size overflow"
-#define lexEM   "lex buffer overflow"
-#define refEM   "reference table overflow"
-#define tableEM  "table overflow"
-#define memEM "not enough memory"
-
-
-void luaI_free (void *block);
-void *luaI_realloc (void *oldblock, unsigned long size);
-void *luaI_buffer (unsigned long size);
-int luaI_growvector (void **block, unsigned long nelems, int size,
-                       char *errormsg, unsigned long limit);
-
-#define luaI_malloc(s)	luaI_realloc(NULL, (s))
-#define new(s)          ((s *)luaI_malloc(sizeof(s)))
-#define newvector(n,s)  ((s *)luaI_malloc((n)*sizeof(s)))
-#define growvector(old,n,s,e,l) \
-          (luaI_growvector((void**)old,n,sizeof(s),e,l))
-
-#endif 
-

lundump.c

@@ -0,0 +1,234 @@
+/*
+** $Id: lundump.c,v 1.18 1999/04/09 03:10:40 lhf Exp lhf $
+** load bytecodes from files
+** See Copyright Notice in lua.h
+*/
+
+#include <stdio.h>
+#include <string.h>
+#include "lauxlib.h"
+#include "lfunc.h"
+#include "lmem.h"
+#include "lopcodes.h"
+#include "lstring.h"
+#include "lundump.h"
+
+#define	LoadBlock(b,size,Z)	ezread(Z,b,size)
+
+#if LUAC_NATIVE
+	#define doLoadNumber(x,Z)	LoadBlock(&x,sizeof(x),Z)
+#else
+	#define doLoadNumber(x,Z)	x=LoadNumber(Z)
+#endif
+
+static void unexpectedEOZ (ZIO* Z)
+{
+ luaL_verror("unexpected end of file in %s",zname(Z));
+}
+
+static int ezgetc (ZIO* Z)
+{
+ int c=zgetc(Z);
+ if (c==EOZ) unexpectedEOZ(Z);
+ return c;
+}
+
+static void ezread (ZIO* Z, void* b, int n)
+{
+ int r=zread(Z,b,n);
+ if (r!=0) unexpectedEOZ(Z);
+}
+
+static unsigned int LoadWord (ZIO* Z)
+{
+ unsigned int hi=ezgetc(Z);
+ unsigned int lo=ezgetc(Z);
+ return (hi<<8)|lo;
+}
+
+static unsigned long LoadLong (ZIO* Z)
+{
+ unsigned long hi=LoadWord(Z);
+ unsigned long lo=LoadWord(Z);
+ return (hi<<16)|lo;
+}
+
+static real LoadNumber (ZIO* Z)
+{
+ char b[256];
+ int size=ezgetc(Z);
+ LoadBlock(b,size,Z);
+ b[size]=0;
+ if (b[0]=='-')
+  return -luaO_str2d(b+1);
+ else
+  return luaO_str2d(b);
+}
+
+static int LoadInt (ZIO* Z, char* message)
+{
+ unsigned long l=LoadLong(Z);
+ unsigned int i=l;
+ if (i!=l) luaL_verror(message,l,zname(Z));
+ return i;
+}
+
+#define PAD	5			/* two word operands plus opcode */
+
+static Byte* LoadCode (ZIO* Z)
+{
+ int size=LoadInt(Z,"code too long (%ld bytes) in %s");
+ Byte* b=luaM_malloc(size+PAD);
+ LoadBlock(b,size,Z);
+ if (b[size-1]!=ENDCODE) luaL_verror("bad code in %s",zname(Z));
+ memset(b+size,ENDCODE,PAD);		/* pad code for safety */
+ return b;
+}
+
+static TaggedString* LoadTString (ZIO* Z)
+{
+ long size=LoadLong(Z);
+ if (size==0)
+  return NULL;
+ else
+ {
+  char* s=luaL_openspace(size);
+  LoadBlock(s,size,Z);
+  return luaS_newlstr(s,size-1);
+ }
+}
+
+static void LoadLocals (TProtoFunc* tf, ZIO* Z)
+{
+ int i,n=LoadInt(Z,"too many locals (%ld) in %s");
+ if (n==0) return;
+ tf->locvars=luaM_newvector(n+1,LocVar);
+ for (i=0; i<n; i++)
+ {
+  tf->locvars[i].line=LoadInt(Z,"too many lines (%ld) in %s");
+  tf->locvars[i].varname=LoadTString(Z);
+ }
+ tf->locvars[i].line=-1;		/* flag end of vector */
+ tf->locvars[i].varname=NULL;
+}
+
+static TProtoFunc* LoadFunction (ZIO* Z);
+
+static void LoadConstants (TProtoFunc* tf, ZIO* Z)
+{
+ int i,n=LoadInt(Z,"too many constants (%ld) in %s");
+ tf->nconsts=n;
+ if (n==0) return;
+ tf->consts=luaM_newvector(n,TObject);
+ for (i=0; i<n; i++)
+ {
+  TObject* o=tf->consts+i;
+  ttype(o)=-ezgetc(Z);			/* ttype(o) is negative - ORDER LUA_T */
+  switch (ttype(o))
+  {
+   case LUA_T_NUMBER:
+	doLoadNumber(nvalue(o),Z);
+	break;
+   case LUA_T_STRING:
+	tsvalue(o)=LoadTString(Z);
+	break;
+   case LUA_T_PROTO:
+	tfvalue(o)=LoadFunction(Z);
+	break;
+   case LUA_T_NIL:
+	break;
+   default:				/* cannot happen */
+	luaU_badconstant("load",i,o,tf);
+	break;
+  }
+ }
+}
+
+static TProtoFunc* LoadFunction (ZIO* Z)
+{
+ TProtoFunc* tf=luaF_newproto();
+ tf->lineDefined=LoadInt(Z,"lineDefined too large (%ld) in %s");
+ tf->source=LoadTString(Z);
+ if (tf->source==NULL) tf->source=luaS_new(zname(Z));
+ tf->code=LoadCode(Z);
+ LoadLocals(tf,Z);
+ LoadConstants(tf,Z);
+ 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 %s",zname(Z));
+}
+
+static void LoadHeader (ZIO* Z)
+{
+ int version,sizeofR;
+ LoadSignature(Z);
+ version=ezgetc(Z);
+ if (version>VERSION)
+  luaL_verror(
+	"%s too new: version=0x%02x; expected at most 0x%02x",
+	zname(Z),version,VERSION);
+ if (version<VERSION0)			/* check last major change */
+  luaL_verror(
+	"%s too old: version=0x%02x; expected at least 0x%02x",
+	zname(Z),version,VERSION0);
+ sizeofR=ezgetc(Z);			/* test number representation */
+#if LUAC_NATIVE
+ if (sizeofR==0)
+  luaL_verror("cannot read numbers in %s: "
+	"support for decimal format not enabled",
+	zname(Z));
+ if (sizeofR!=sizeof(real))
+  luaL_verror("unknown number size in %s: read %d; expected %d",
+	zname(Z),sizeofR,sizeof(real));
+ else
+ {
+ real f=-TEST_NUMBER,tf=TEST_NUMBER;
+ doLoadNumber(f,Z);
+ if (f!=tf)
+  luaL_verror("unknown number representation in %s: "
+	"read " NUMBER_FMT "; expected " NUMBER_FMT,
+	zname(Z),f,tf);
+ }
+#else
+ if (sizeofR!=0)
+  luaL_verror("cannot read numbers in %s: "
+	"support for native format not enabled",
+	zname(Z));
+#endif
+}
+
+static TProtoFunc* LoadChunk (ZIO* Z)
+{
+ LoadHeader(Z);
+ return LoadFunction(Z);
+}
+
+/*
+** 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);
+ if (c==ID_CHUNK)
+  return LoadChunk(Z);
+ else if (c!=EOZ)
+  luaL_verror("%s is not a Lua binary file",zname(Z));
+ return NULL;
+}
+
+/*
+* handle constants that cannot happen
+*/
+void luaU_badconstant (char* s, int i, TObject* o, TProtoFunc* tf)
+{
+ int t=ttype(o);
+ char* name= (t>0 || t<LUA_T_LINE) ? "?" : luaO_typenames[-t];
+ luaL_verror("cannot %s constant #%d: type=%d [%s]" IN,s,i,t,name,INLOC);
+}

lundump.h

@@ -0,0 +1,48 @@
+/*
+** $Id: lundump.h,v 1.13 1999/03/29 16:16:18 lhf Exp lhf $
+** load pre-compiled Lua chunks
+** See Copyright Notice in lua.h
+*/
+
+#ifndef lundump_h
+#define lundump_h
+
+#include "lobject.h"
+#include "lzio.h"
+
+TProtoFunc* luaU_undump1 (ZIO* Z);	/* load one chunk */
+void luaU_badconstant (char* s, int i, TObject* o, TProtoFunc* tf);
+					/* handle cases that cannot happen */
+
+/* definitions for headers of binary files */
+#define	VERSION		0x32		/* last format change was in 3.2 */
+#define	VERSION0	0x32		/* last major  change was in 3.2 */
+#define ID_CHUNK	27		/* binary files start with ESC... */
+#define	SIGNATURE	"Lua"		/* ...followed by this signature */
+
+/* formats for error messages */
+#define SOURCE		"<%s:%d>"
+#define IN		" in %p " SOURCE
+#define INLOC		tf,tf->source->str,tf->lineDefined
+
+/* format for numbers in listings and error messages */
+#ifndef NUMBER_FMT
+#define NUMBER_FMT	"%.16g"		/* LUA_NUMBER */
+#endif
+
+/* LUA_NUMBER
+* by default, numbers are stored in precompiled chunks as decimal strings.
+* this is completely portable and fast enough for most applications.
+* if you want to use this default, do nothing.
+* if you want additional speed at the expense of portability, move the line
+* below out of this comment.
+#define LUAC_NATIVE
+*/
+
+#ifdef LUAC_NATIVE
+/* a multiple of PI for testing number representation */
+/* multiplying by 1E8 gives non-trivial integer values */
+#define	TEST_NUMBER	3.14159265358979323846E8
+#endif
+
+#endif

lvm.c

@@ -0,0 +1,632 @@
+/*
+** $Id: lvm.c,v 1.54 1999/03/10 14:09:45 roberto Exp roberto $
+** Lua virtual machine
+** See Copyright Notice in lua.h
+*/
+
+
+#include <ctype.h>
+#include <limits.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "lauxlib.h"
+#include "ldo.h"
+#include "lfunc.h"
+#include "lgc.h"
+#include "lmem.h"
+#include "lobject.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 highbyte(x)	((x)<<8)
+
+
+/* Extra stack size to run a function: LUA_T_LINE(1), TM calls(2), ... */
+#define	EXTRA_STACK	5
+
+
+
+static TaggedString *strconc (TaggedString *l, TaggedString *r) {
+  long nl = l->u.s.len;
+  long nr = r->u.s.len;
+  char *buffer = luaL_openspace(nl+nr);
+  memcpy(buffer, l->str, nl);
+  memcpy(buffer+nl, r->str, nr);
+  return luaS_newlstr(buffer, nl+nr);
+}
+
+
+int luaV_tonumber (TObject *obj) {  /* LUA_NUMBER */
+  if (ttype(obj) != LUA_T_STRING)
+    return 1;
+  else {
+    double t;
+    char *e = svalue(obj);
+    int sig = 1;
+    while (isspace((unsigned char)*e)) e++;
+    if (*e == '-') {
+      e++;
+      sig = -1;
+    }
+    else if (*e == '+') e++;
+    /* no digit before or after decimal point? */
+    if (!isdigit((unsigned char)*e) && !isdigit((unsigned char)*(e+1)))
+      return 2;
+    t = luaO_str2d(e);
+    if (t<0) return 2;
+    nvalue(obj) = (real)t*sig;
+    ttype(obj) = LUA_T_NUMBER;
+    return 0;
+  }
+}
+
+
+int luaV_tostring (TObject *obj) {  /* LUA_NUMBER */
+  if (ttype(obj) != LUA_T_NUMBER)
+    return 1;
+  else {
+    char s[32];  /* 16 digits, signal, point and \0  (+ some extra...) */
+    sprintf(s, "%.16g", (double)nvalue(obj));
+    tsvalue(obj) = luaS_new(s);
+    ttype(obj) = LUA_T_STRING;
+    return 0;
+  }
+}
+
+
+void luaV_setn (Hash *t, int val) {
+  TObject index, value;
+  ttype(&index) = LUA_T_STRING; tsvalue(&index) = luaS_new("n");
+  ttype(&value) = LUA_T_NUMBER; nvalue(&value) = val;
+  luaH_set(t, &index, &value);
+}
+
+
+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) {
+  TObject *table = L->stack.top-2;
+  TObject *im;
+  if (ttype(table) != LUA_T_ARRAY) {  /* not a table, get gettable method */
+    im = luaT_getimbyObj(table, IM_GETTABLE);
+    if (ttype(im) == LUA_T_NIL)
+      lua_error("indexed expression not a table");
+  }
+  else {  /* object is a table... */
+    int tg = table->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(table), table+1);
+      if (ttype(h) == LUA_T_NIL &&
+          (ttype(im=luaT_getim(tg, IM_INDEX)) != LUA_T_NIL)) {
+        /* result is nil and there is an "index" tag method */
+        luaD_callTM(im, 2, 1);  /* calls it */
+      }
+      else {
+        L->stack.top--;
+        *table = *h;  /* "push" result into table position */
+      }
+      return;
+    }
+    /* else it has a "gettable" method, go through to next command */
+  }
+  /* object is not a table, or it has a "gettable" method */
+  luaD_callTM(im, 2, 1);
+}
+
+
+/*
+** Receives table at *t, index at *(t+1) and value at top.
+*/
+void luaV_settable (TObject *t) {
+  struct Stack *S = &L->stack;
+  TObject *im;
+  if (ttype(t) != LUA_T_ARRAY) {  /* not a table, get "settable" method */
+    im = luaT_getimbyObj(t, IM_SETTABLE);
+    if (ttype(im) == LUA_T_NIL)
+      lua_error("indexed expression not a table");
+  }
+  else {  /* object is a table... */
+    im = luaT_getim(avalue(t)->htag, IM_SETTABLE);
+    if (ttype(im) == LUA_T_NIL) {  /* and does not have a "settable" method */
+      luaH_set(avalue(t), t+1, S->top-1);
+      S->top--;  /* pop value */
+      return;
+    }
+    /* else it has a "settable" method, go through to next command */
+  }
+  /* object is not a table, or it has a "settable" method */
+  /* prepare arguments and call the tag method */
+  *(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);
+}
+
+
+void luaV_rawsettable (TObject *t) {
+  if (ttype(t) != LUA_T_ARRAY)
+    lua_error("indexed expression not a table");
+  else {
+    struct Stack *S = &L->stack;
+    luaH_set(avalue(t), t+1, S->top-1);
+    S->top -= 3;
+  }
+}
+
+
+void luaV_getglobal (TaggedString *ts) {
+  /* WARNING: caller must assure stack space */
+  /* only userdata, tables and nil can have getglobal tag methods */
+  static char valid_getglobals[] = {1, 0, 0, 1, 0, 0, 1, 0};  /* ORDER LUA_T */
+  TObject *value = &ts->u.s.globalval;
+  if (valid_getglobals[-ttype(value)]) {
+    TObject *im = luaT_getimbyObj(value, IM_GETGLOBAL);
+    if (ttype(im) != LUA_T_NIL) {  /* is there a tag method? */
+      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);
+      return;
+    }
+    /* else no tag method: go through to default behavior */
+  }
+  *L->stack.top++ = *value;  /* default behavior */
+}
+
+
+void luaV_setglobal (TaggedString *ts) {
+  TObject *oldvalue = &ts->u.s.globalval;
+  TObject *im = luaT_getimbyObj(oldvalue, IM_SETGLOBAL);
+  if (ttype(im) == LUA_T_NIL)  /* is there a tag method? */
+    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 int luaV_strcomp (char *l, long ll, char *r, long lr)
+{
+  for (;;) {
+    long temp = strcoll(l, r);
+    if (temp != 0) return temp;
+    /* strings are equal up to a '\0' */
+    temp = strlen(l);  /* index of first '\0' in both strings */
+    if (temp == ll)  /* l is finished? */
+      return (temp == lr) ? 0 : -1;  /* l is equal or smaller than r */
+    else if (temp == lr)  /* r is finished? */
+      return 1;  /* l is greater than r (because l is not finished) */
+    /* both strings longer than temp; go on comparing (after the '\0') */
+    temp++;
+    l += temp; ll -= temp; r += temp; lr -= temp;
+  }
+}
+
+void luaV_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;
+  real result;
+  if (ttype(l) == LUA_T_NUMBER && ttype(r) == LUA_T_NUMBER)
+    result = nvalue(l)-nvalue(r);
+  else if (ttype(l) == LUA_T_STRING && ttype(r) == LUA_T_STRING)
+    result = luaV_strcomp(svalue(l), tsvalue(l)->u.s.len,
+                          svalue(r), tsvalue(r)->u.s.len);
+  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;
+  Hash *htab;
+  if (nvararg < 0) nvararg = 0;
+  htab = avalue(tab) = luaH_new(nvararg+1);  /* +1 for field 'n' */
+  ttype(tab) = LUA_T_ARRAY;
+  for (i=0; i<nvararg; i++)
+    luaH_setint(htab, i+1, firstelem+i);
+  luaV_setn(htab, nvararg);  /* store counter in field "n" */
+}
+
+
+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 */
+  register Byte *pc = tf->code;
+  TObject *consts = tf->consts;
+  if (L->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);
+  }
+  for (;;) {
+    register int aux = 0;
+    switchentry:
+    switch ((OpCode)*pc++) {
+
+      case ENDCODE:
+        S->top = S->stack + base;
+        goto ret;
+        
+      case RETCODE:
+        base += *pc++;
+        goto ret;
+
+      case CALL: aux = *pc++;
+        luaD_call((S->top-S->stack)-(*pc++), aux);
+        break;
+
+      case TAILCALL: aux = *pc++;
+        luaD_call((S->top-S->stack)-(*pc++), MULT_RET);
+        base += aux;
+        goto ret;
+
+      case PUSHNIL: aux = *pc++;
+        do {
+          ttype(S->top++) = LUA_T_NIL;
+        } while (aux--);
+        break;
+
+      case POP: aux = *pc++;
+        S->top -= aux;
+        break;
+
+      case PUSHNUMBERW: aux += highbyte(*pc++);
+      case PUSHNUMBER:  aux += *pc++;
+        ttype(S->top) = LUA_T_NUMBER;
+        nvalue(S->top) = aux;
+        S->top++;
+        break;
+
+      case PUSHNUMBERNEGW: aux += highbyte(*pc++);
+      case PUSHNUMBERNEG:  aux += *pc++;
+        ttype(S->top) = LUA_T_NUMBER;
+        nvalue(S->top) = -aux;
+        S->top++;
+        break;
+
+      case PUSHCONSTANTW: aux += highbyte(*pc++);
+      case PUSHCONSTANT:  aux += *pc++;
+        *S->top++ = consts[aux];
+        break;
+
+      case PUSHUPVALUE: aux = *pc++;
+        *S->top++ = cl->consts[aux+1];
+        break;
+
+      case PUSHLOCAL: aux = *pc++;
+        *S->top++ = *((S->stack+base) + aux);
+        break;
+
+      case GETGLOBALW: aux += highbyte(*pc++);
+      case GETGLOBAL:  aux += *pc++;
+        luaV_getglobal(tsvalue(&consts[aux]));
+        break;
+
+      case GETTABLE:
+        luaV_gettable();
+        break;
+
+      case GETDOTTEDW: aux += highbyte(*pc++);
+      case GETDOTTED:  aux += *pc++;
+        *S->top++ = consts[aux];
+        luaV_gettable();
+        break;
+
+      case PUSHSELFW: aux += highbyte(*pc++);
+      case PUSHSELF:  aux += *pc++; {
+        TObject receiver = *(S->top-1);
+        *S->top++ = consts[aux];
+        luaV_gettable();
+        *S->top++ = receiver;
+        break;
+      }
+
+      case CREATEARRAYW: aux += highbyte(*pc++);
+      case CREATEARRAY:  aux += *pc++;
+        luaC_checkGC();
+        avalue(S->top) = luaH_new(aux);
+        ttype(S->top) = LUA_T_ARRAY;
+        S->top++;
+        break;
+
+      case SETLOCAL: aux = *pc++;
+        *((S->stack+base) + aux) = *(--S->top);
+        break;
+
+      case SETGLOBALW: aux += highbyte(*pc++);
+      case SETGLOBAL:  aux += *pc++;
+        luaV_setglobal(tsvalue(&consts[aux]));
+        break;
+
+      case SETTABLEPOP:
+        luaV_settable(S->top-3);
+        S->top -= 2;  /* pop table and index */
+        break;
+
+      case SETTABLE:
+        luaV_settable(S->top-3-(*pc++));
+        break;
+
+      case SETLISTW: aux += highbyte(*pc++);
+      case SETLIST:  aux += *pc++; {
+        int n = *(pc++);
+        TObject *arr = S->top-n-1;
+        aux *= LFIELDS_PER_FLUSH;
+        for (; n; n--)
+          luaH_setint(avalue(arr), n+aux, --S->top);
+        break;
+      }
+
+      case SETMAP:  aux = *pc++; {
+        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 NEQOP: aux = 1;
+      case EQOP: {
+        int res = luaO_equalObj(S->top-2, S->top-1);
+        if (aux) res = !res;
+        S->top--;
+        ttype(S->top-1) = res ? LUA_T_NUMBER : LUA_T_NIL;
+        nvalue(S->top-1) = 1;
+        break;
+      }
+
+       case LTOP:
+         luaV_comparison(LUA_T_NUMBER, LUA_T_NIL, LUA_T_NIL, IM_LT);
+         break;
+
+      case LEOP:
+        luaV_comparison(LUA_T_NUMBER, LUA_T_NUMBER, LUA_T_NIL, IM_LE);
+        break;
+
+      case GTOP:
+        luaV_comparison(LUA_T_NIL, LUA_T_NIL, LUA_T_NUMBER, IM_GT);
+        break;
+
+      case GEOP:
+        luaV_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_binTM(IM_POW, "undefined operation");
+        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(tsvalue(l), tsvalue(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 += highbyte(*pc++);
+      case ONTJMP:  aux += *pc++;
+        if (ttype(S->top-1) != LUA_T_NIL) pc += aux;
+        else S->top--;
+        break;
+
+      case ONFJMPW: aux += highbyte(*pc++);
+      case ONFJMP:  aux += *pc++;
+        if (ttype(S->top-1) == LUA_T_NIL) pc += aux;
+        else S->top--;
+        break;
+
+      case JMPW: aux += highbyte(*pc++);
+      case JMP:  aux += *pc++;
+        pc += aux;
+        break;
+
+      case IFFJMPW: aux += highbyte(*pc++);
+      case IFFJMP:  aux += *pc++;
+        if (ttype(--S->top) == LUA_T_NIL) pc += aux;
+        break;
+
+      case IFTUPJMPW: aux += highbyte(*pc++);
+      case IFTUPJMP:  aux += *pc++;
+        if (ttype(--S->top) != LUA_T_NIL) pc -= aux;
+        break;
+
+      case IFFUPJMPW: aux += highbyte(*pc++);
+      case IFFUPJMP:  aux += *pc++;
+        if (ttype(--S->top) == LUA_T_NIL) pc -= aux;
+        break;
+
+      case CLOSUREW: aux += highbyte(*pc++);
+      case CLOSURE:  aux += *pc++;
+        *S->top++ = consts[aux];
+        luaV_closure(*pc++);
+        luaC_checkGC();
+        break;
+
+      case SETLINEW: aux += highbyte(*pc++);
+      case SETLINE:  aux += *pc++;
+        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 (L->linehook)
+          luaD_lineHook(aux);
+        break;
+
+      case LONGARGW: aux += highbyte(*pc++);
+      case LONGARG:  aux += *pc++;
+        aux = highbyte(highbyte(aux));
+        goto switchentry;  /* do not reset "aux" */
+
+      case CHECKSTACK: aux = *pc++;
+        LUA_ASSERT((S->top-S->stack)-base == aux, "wrong stack size");
+        break;
+
+    }
+  } ret:
+  if (L->callhook)
+    luaD_callHook(0, NULL, 1);
+  return base;
+}
+

lvm.h

@@ -0,0 +1,34 @@
+/*
+** $Id: lvm.h,v 1.7 1998/12/30 17:26:49 roberto Exp roberto $
+** Lua virtual machine
+** See Copyright Notice in lua.h
+*/
+
+#ifndef lvm_h
+#define lvm_h
+
+
+#include "ldo.h"
+#include "lobject.h"
+#include "ltm.h"
+
+
+#define 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_setn (Hash *t, int val);
+void luaV_gettable (void);
+void luaV_settable (TObject *t);
+void luaV_rawsettable (TObject *t);
+void luaV_getglobal (TaggedString *ts);
+void luaV_setglobal (TaggedString *ts);
+StkId luaV_execute (Closure *cl, TProtoFunc *tf, StkId base);
+void luaV_closure (int nelems);
+void luaV_comparison (lua_Type ttype_less, lua_Type ttype_equal,
+                      lua_Type ttype_great, IMS op);
+
+#endif

lzio.c

@@ -1,45 +1,50 @@
 /*
-* zio.c
-* a generic input stream interface
-* $Id: zio.c,v 1.1 1997/06/16 16:50:22 roberto Exp roberto $
+** $Id: lzio.c,v 1.6 1999/03/04 14:49:18 roberto Exp roberto $
+** a generic input stream interface
+** See Copyright Notice in lua.h
 */
 
+
+
 #include <stdio.h>
-#include <stdlib.h>
 #include <string.h>
-#include "zio.h"
+
+#include "lzio.h"
+
 
 
 /* ----------------------------------------------------- memory buffers --- */
 
-static int zmfilbuf(ZIO* z)
-{
+static int zmfilbuf (ZIO* z) {
  return EOZ;
 }
 
-ZIO* zmopen(ZIO* z, char* b, int size)
+
+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)
+ZIO* zsopen (ZIO* z, char* s, char *name)
 {
  if (s==NULL) return NULL;
- return zmopen(z,s,strlen(s));
+ return zmopen(z,s,strlen(s),name);
 }
 
 /* -------------------------------------------------------------- FILEs --- */
 
-static int zffilbuf(ZIO* z)
-{
- int n=fread(z->buffer,1,ZBSIZE,z->u);
+static int zffilbuf (ZIO* z) {
+ int n;
+ if (feof((FILE *)z->u)) return EOZ;
+ n=fread(z->buffer,1,ZBSIZE,z->u);
  if (n==0) return EOZ;
  z->n=n-1;
  z->p=z->buffer;
@@ -47,28 +52,28 @@ static int zffilbuf(ZIO* z)
 }
 
 
-ZIO* zFopen(ZIO* z, FILE* f)
+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)
-{
+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 */
+        return n;  /* return number of missing bytes */
+      zungetc(z);  /* put result from 'filbuf' in the buffer */
     }
-    m = (n <= z->n) ? n : z->n;  /* minimo de n e z->n */
+    m = (n <= z->n) ? n : z->n;  /* min. between n and z->n */
     memcpy(b, z->p, m);
     z->n -= m;
     z->p += m;

lzio.h

@@ -1,11 +1,12 @@
 /*
-* zio.h
-* a generic input stream interface
-* $Id: zio.h,v 1.4 1997/06/19 18:55:28 roberto Exp roberto $
+** $Id: lzio.h,v 1.3 1997/12/22 20:57:18 roberto Exp roberto $
+** Buffered streams
+** See Copyright Notice in lua.h
 */
 
-#ifndef zio_h
-#define zio_h
+
+#ifndef lzio_h
+#define lzio_h
 
 #include <stdio.h>
 
@@ -21,15 +22,15 @@
 
 typedef struct zio ZIO;
 
-ZIO* zFopen(ZIO* z, FILE* f);		/* open FILEs */
-ZIO* zsopen(ZIO* z, char* s);		/* string */
-ZIO* zmopen(ZIO* z, char* b, int size);	/* memory */
+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 */
+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 ------------------ */
@@ -41,6 +42,7 @@ struct zio {
  unsigned char* p;			/* current position in buffer */
  int (*filbuf)(ZIO* z);
  void* u;				/* additional data */
+ char *name;
  unsigned char buffer[ZBSIZE];		/* buffer */
 };
 

makefile

@@ -1,21 +1,40 @@
-# $Id: makefile,v 1.35 1997/06/16 16:50:22 roberto Exp roberto $
+#
+## $Id: makefile,v 1.18 1999/02/23 15:01:29 roberto Exp roberto $
+## Makefile
+## See Copyright Notice in lua.h
+#
 
-#configuration
+
+#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) NOSTRERROR if your system does NOT have function "strerror"
-# (although this is ANSI, SunOS does not comply; so, add "-DNOSTRERROR" on SunOS)
-# define LUA_COMPAT2_5=0 if yous system does not need to be compatible with
+#
+# define (undefine) OLD_ANSI if your system does NOT have some new ANSI
+# facilities (e.g. strerror, locale.h, memmove). 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)
+#
+# define LUA_NUM_TYPE if you need numbers to be different from double
+# (for instance, -DLUA_NUM_TYPE=float)
+#
+
 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 -fomit-frame-pointer
+CFLAGS = $(CONFIG) $(CWARNS) -ansi -O2
+
+
+# To make early versions
+CO_OPTIONS =
 
-#CC = acc
-#CFLAGS = -fast -I/usr/5include
 
 AR = ar
 ARFLAGS	= rvl
@@ -23,24 +42,31 @@ ARFLAGS	= rvl
 
 # Aplication modules
 LUAOBJS = \
-	parser.o \
-	lex.o \
-	opcode.o \
-	hash.o \
-	table.o \
-	inout.o \
-	tree.o \
-	fallback.o \
-	luamem.o \
-	func.o \
-	undump.o \
-	auxlib.o \
-	zio.o
+	lapi.o \
+	lauxlib.o \
+	lbuffer.o \
+	lbuiltin.o \
+	ldo.o \
+	lfunc.o \
+	lgc.o \
+	llex.o \
+	lmem.o \
+	lobject.o \
+	lparser.o \
+	lstate.o \
+	lstring.o \
+	ltable.o \
+	ltm.o \
+	lvm.o \
+	lundump.o \
+	lzio.o
 
 LIBOBJS = 	\
-	iolib.o \
-	mathlib.o \
-	strlib.o
+	liolib.o \
+	lmathlib.o \
+	lstrlib.o \
+	ldblib.o \
+	linit.o
 
 
 lua : lua.o liblua.a liblualib.a
@@ -57,55 +83,58 @@ liblualib.a : $(LIBOBJS)
 liblua.so.1.0 : lua.o
 	ld -o liblua.so.1.0 $(LUAOBJS)
 
-y.tab.c y.tab.h  : lua.stx
-	yacc -d lua.stx
-
-parser.c : y.tab.c
-	sed -e 's/yy/luaY_/g' -e 's/malloc\.h/stdlib\.h/g' y.tab.c > parser.c
-
-parser.h : y.tab.h
-	sed -e 's/yy/luaY_/g' y.tab.h > parser.h
 
 clear	:
 	rcsclean
 	rm -f *.o
-	rm -f parser.c parser.h y.tab.c y.tab.h
-	co lua.h lualib.h luadebug.h
+	rm -f
+	co $(CO_OPTIONS) lua.h lualib.h luadebug.h
 
 
 %.h : RCS/%.h,v
-	co $@
+	co $(CO_OPTIONS) $@
 
 %.c : RCS/%.c,v
-	co $@
+	co $(CO_OPTIONS) $@
 
 
-auxlib.o: auxlib.c lua.h auxlib.h luadebug.h
-fallback.o: fallback.c auxlib.h lua.h luamem.h fallback.h opcode.h \
- types.h tree.h func.h table.h hash.h
-func.o: func.c luadebug.h lua.h table.h tree.h types.h opcode.h func.h \
- luamem.h
-hash.o: hash.c luamem.h opcode.h lua.h types.h tree.h func.h hash.h \
- table.h auxlib.h
-inout.o: inout.c auxlib.h lua.h fallback.h opcode.h types.h tree.h \
- func.h hash.h inout.h lex.h zio.h luamem.h table.h undump.h
-iolib.o: iolib.c lua.h auxlib.h luadebug.h lualib.h
-lex.o: lex.c auxlib.h lua.h luamem.h tree.h types.h table.h opcode.h \
- func.h lex.h zio.h inout.h luadebug.h parser.h
-lua.o: lua.c lua.h auxlib.h lualib.h
-luamem.o: luamem.c luamem.h lua.h
-mathlib.o: mathlib.c lualib.h lua.h auxlib.h
-opcode.o: opcode.c luadebug.h lua.h luamem.h opcode.h types.h tree.h \
- func.h hash.h inout.h table.h fallback.h auxlib.h lex.h zio.h
-parser.o: parser.c luadebug.h lua.h luamem.h lex.h zio.h opcode.h \
- types.h tree.h func.h hash.h inout.h table.h
-strlib.o: strlib.c lua.h auxlib.h lualib.h
-table.o: table.c luamem.h auxlib.h lua.h func.h types.h tree.h \
- opcode.h hash.h table.h inout.h fallback.h luadebug.h
-tree.o: tree.c luamem.h lua.h tree.h types.h lex.h zio.h hash.h \
- opcode.h func.h table.h fallback.h
-undump.o: undump.c auxlib.h lua.h opcode.h types.h tree.h func.h \
- luamem.h table.h undump.h zio.h
-y.tab.o: y.tab.c luadebug.h lua.h luamem.h lex.h zio.h opcode.h \
- types.h tree.h func.h hash.h inout.h table.h
-zio.o: zio.c zio.h
+lapi.o: lapi.c lapi.h lua.h lobject.h lauxlib.h ldo.h lstate.h \
+ luadebug.h lfunc.h lgc.h lmem.h lstring.h ltable.h ltm.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 \
+ luadebug.h
+lbuiltin.o: lbuiltin.c lapi.h lua.h lobject.h lauxlib.h lbuiltin.h \
+ ldo.h lstate.h luadebug.h lfunc.h lmem.h lstring.h ltable.h ltm.h \
+ lundump.h lzio.h lvm.h
+ldblib.o: ldblib.c lauxlib.h lua.h luadebug.h lualib.h
+ldo.o: ldo.c ldo.h lobject.h lua.h lstate.h luadebug.h lfunc.h lgc.h \
+ lmem.h lparser.h lzio.h lstring.h ltm.h lundump.h lvm.h
+lfunc.o: lfunc.c lfunc.h lobject.h lua.h lmem.h lstate.h luadebug.h
+lgc.o: lgc.c ldo.h lobject.h lua.h lstate.h luadebug.h lfunc.h lgc.h \
+ lmem.h lstring.h ltable.h ltm.h
+linit.o: linit.c lua.h lualib.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 luadebug.h lstring.h
+lmathlib.o: lmathlib.c lauxlib.h lua.h lualib.h
+lmem.o: lmem.c lmem.h lstate.h lobject.h lua.h luadebug.h
+lobject.o: lobject.c lobject.h lua.h
+lparser.o: lparser.c lauxlib.h lua.h ldo.h lobject.h lstate.h \
+ luadebug.h lfunc.h llex.h lzio.h lmem.h lopcodes.h lparser.h \
+ lstring.h
+lstate.o: lstate.c lbuiltin.h ldo.h lobject.h lua.h lstate.h \
+ luadebug.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 luadebug.h \
+ lstring.h
+lstrlib.o: lstrlib.c lauxlib.h lua.h lualib.h
+ltable.o: ltable.c lauxlib.h lua.h lmem.h lobject.h lstate.h \
+ luadebug.h ltable.h
+ltm.o: ltm.c lauxlib.h lua.h lmem.h lobject.h lstate.h luadebug.h \
+ ltm.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 luadebug.h \
+ lfunc.h lgc.h lmem.h lopcodes.h lstring.h ltable.h ltm.h lvm.h
+lzio.o: lzio.c lzio.h

mathlib.c

@@ -1,217 +0,0 @@
-/*
-** mathlib.c
-** Mathematics library to LUA
-*/
-
-char *rcs_mathlib="$Id: mathlib.c,v 1.24 1997/06/09 17:30:10 roberto Exp roberto $";
-
-#include <stdlib.h>
-#include <math.h>
-
-#include "lualib.h"
-#include "auxlib.h"
-#include "lua.h"
-
-#ifndef PI
-#define PI          3.14159265358979323846
-#endif
-#define TODEGREE(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)
-{
- double d = luaL_check_number(1);
- lua_pushnumber (sin(TORAD(d)));
-}
-
-
-
-static void math_cos (void)
-{
- double d = luaL_check_number(1);
- lua_pushnumber (cos(TORAD(d)));
-}
-
-
-
-static void math_tan (void)
-{
- double d = luaL_check_number(1);
- lua_pushnumber (tan(TORAD(d)));
-}
-
-
-static void math_asin (void)
-{
- double d = luaL_check_number(1);
- lua_pushnumber (TODEGREE(asin(d)));
-}
-
-
-static void math_acos (void)
-{
- double d = luaL_check_number(1);
- lua_pushnumber (TODEGREE(acos(d)));
-}
-
-
-static void math_atan (void)
-{
- double d = luaL_check_number(1);
- lua_pushnumber (TODEGREE(atan(d)));
-}
-
-
-static void math_atan2 (void)
-{
- double d1 = luaL_check_number(1);
- double d2 = luaL_check_number(2);
- lua_pushnumber (TODEGREE(atan2(d1, d2)));
-}
-
-
-static void math_ceil (void)
-{
- double d = luaL_check_number(1);
- lua_pushnumber (ceil(d));
-}
-
-
-static void math_floor (void)
-{
- double d = luaL_check_number(1);
- lua_pushnumber (floor(d));
-}
-
-static void math_mod (void)
-{
-  float x = luaL_check_number(1);
-  float y = luaL_check_number(2);
-  lua_pushnumber(fmod(x, y));
-}
-
-
-static void math_sqrt (void)
-{
- double d = luaL_check_number(1);
- lua_pushnumber (sqrt(d));
-}
-
-
-static void math_pow (void)
-{
-  double d1 = luaL_check_number(1);
-  double d2 = luaL_check_number(2);
-  lua_pushnumber(pow(d1,d2));
-}
-
-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_log (void)
-{
- double d = luaL_check_number(1);
- lua_pushnumber (log(d));
-}
-
-
-static void math_log10 (void)
-{
- double d = luaL_check_number(1);
- lua_pushnumber (log10(d));
-}
-
-
-static void math_exp (void)
-{
- double d = luaL_check_number(1);
- lua_pushnumber (exp(d));
-}
-
-static void math_deg (void)
-{
- float d = luaL_check_number(1);
- lua_pushnumber (d*180./PI);
-}
-
-static void math_rad (void)
-{
- float d = luaL_check_number(1);
- lua_pushnumber (d/180.*PI);
-}
-
-static void math_random (void)
-{
-  lua_pushnumber((double)(rand()%RAND_MAX) / (double)RAND_MAX);
-}
-
-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 mathlib_open (void)
-{
-  luaL_openlib(mathlib, (sizeof(mathlib)/sizeof(mathlib[0])));
-  lua_pushcfunction(math_pow);
-  lua_pushnumber(0);  /* to get its tag */
-  lua_settagmethod(lua_tag(lua_pop()), "pow");
-}
-

mathlib.h

@@ -1,13 +0,0 @@
-/*
-** Math library to LUA
-** TeCGraf - PUC-Rio
-** $Id: $
-*/
-
-
-#ifndef strlib_h
-
-void mathlib_open (void);
-
-#endif
-

opcode.h

@@ -1,171 +0,0 @@
-/*
-** TeCGraf - PUC-Rio
-** $Id: opcode.h,v 3.33 1997/04/11 21:34:53 roberto Exp roberto $
-*/
-
-#ifndef opcode_h
-#define opcode_h
-
-#include "lua.h"
-#include "types.h"
-#include "tree.h"
-#include "func.h"
-
-
-#define FIELDS_PER_FLUSH 40
-
-/*
-* WARNING: if you change the order of this enumeration,
-* grep "ORDER LUA_T"
-*/
-typedef enum
-{
- LUA_T_NIL      = -9,
- LUA_T_NUMBER   = -8,
- LUA_T_STRING   = -7,
- LUA_T_ARRAY    = -6,  /* array==table */
- LUA_T_FUNCTION = -5,
- LUA_T_CFUNCTION= -4,
- LUA_T_MARK     = -3,
- LUA_T_CMARK    = -2,
- LUA_T_LINE     = -1,
- LUA_T_USERDATA = 0
-} lua_Type;
-
-#define NUM_TYPES 10
-
-
-extern char *luaI_typenames[];
-
-typedef enum {
-/* name          parm    before          after           side effect
------------------------------------------------------------------------------*/
-
-PUSHNIL,/*		-		nil  */
-PUSH0,/*		-		0.0  */
-PUSH1,/*		-		1.0  */
-PUSH2,/*		-		2.0  */
-PUSHBYTE,/*	b	-		(float)b  */
-PUSHWORD,/*	w	-		(float)w  */
-PUSHFLOAT,/*	f	-		f  */
-PUSHSTRING,/*	w	-		STR[w]  */
-PUSHFUNCTION,/*	p	-		FUN(p)  */
-PUSHLOCAL0,/*		-		LOC[0]  */
-PUSHLOCAL1,/*		-		LOC[1]  */
-PUSHLOCAL2,/*		-		LOC[2]  */
-PUSHLOCAL3,/*		-		LOC[3]  */
-PUSHLOCAL4,/*		-		LOC[4]  */
-PUSHLOCAL5,/*		-		LOC[5]  */
-PUSHLOCAL6,/*		-		LOC[6]  */
-PUSHLOCAL7,/*		-		LOC[7]  */
-PUSHLOCAL8,/*		-		LOC[8]  */
-PUSHLOCAL9,/*		-		LOC[9]  */
-PUSHLOCAL,/*	b	-		LOC[b]  */
-PUSHGLOBAL,/*	w	-		VAR[w]  */
-PUSHINDEXED,/*		i t		t[i]  */
-PUSHSELF,/*	w	t		t t[STR[w]]  */
-STORELOCAL0,/*		x		-		LOC[0]=x  */
-STORELOCAL1,/*		x		-		LOC[1]=x  */
-STORELOCAL2,/*		x		-		LOC[2]=x  */
-STORELOCAL3,/*		x		-		LOC[3]=x  */
-STORELOCAL4,/*		x		-		LOC[4]=x  */
-STORELOCAL5,/*		x		-		LOC[5]=x  */
-STORELOCAL6,/*		x		-		LOC[6]=x  */
-STORELOCAL7,/*		x		-		LOC[7]=x  */
-STORELOCAL8,/*		x		-		LOC[8]=x  */
-STORELOCAL9,/*		x		-		LOC[9]=x  */
-STORELOCAL,/*	b	x		-		LOC[b]=x  */
-STOREGLOBAL,/*	w	x		-		VAR[w]=x  */
-STOREINDEXED0,/*	v i t		-		t[i]=v  */
-STOREINDEXED,/*	b	v a_b...a_1 i t	a_b...a_1 i t	t[i]=v  */
-STORELIST0,/*	b	v_b...v_1 t	-		t[i]=v_i  */
-STORELIST,/*	b c	v_b...v_1 t	-		t[i+c*FPF]=v_i  */
-STORERECORD,/*	b
-		w_b...w_1 v_b...v_1 t	-		t[STR[w_i]]=v_i  */
-ADJUST0,/*		-		-		TOP=BASE  */
-ADJUST,/*	b	-		-		TOP=BASE+b  */
-CREATEARRAY,/*	w	-		newarray(size = w)  */
-EQOP,/*			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,/*	w	x		-		(x!=nil)? PC+=w  */
-ONFJMP,/*	w	x		-		(x==nil)? PC+=w  */
-JMP,/*		w	-		-		PC+=w  */
-UPJMP,/*	w	-		-		PC-=w  */
-IFFJMP,/*	w	x		-		(x==nil)? PC+=w  */
-IFFUPJMP,/*	w	x		-		(x==nil)? PC-=w  */
-POP,/*			x		-  */
-CALLFUNC,/*	b c	v_b...v_1 f	r_c...r_1	f(v1,...,v_b)  */
-RETCODE0,
-RETCODE,/*	b	-		-  */
-SETLINE,/*	w	-		-		LINE=w  */
-VARARGS,/*	b	v_b...v_1	{v_1...v_b;n=b}  */
-STOREMAP/*	b	v_b k_b ...v_1 k_1 t	-	t[k_i]=v_i  */
-} OpCode;
-
-
-#define MULT_RET	255
-
-
-typedef union
-{
- lua_CFunction f;
- real          n;
- TaggedString *ts;
- TFunc         *tf;
- struct Hash    *a;
- int	       i;
-} Value;
-
-typedef struct TObject
-{
- lua_Type ttype;
- Value value;
-} TObject;
-
-
-/* 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 avalue(o)	((o)->value.a)
-#define fvalue(o)	((o)->value.f)
-
-/* Macros to access symbol table */
-#define s_object(i)	(lua_table[i].object)
-#define s_ttype(i)	(ttype(&s_object(i)))
-#define s_nvalue(i)	(nvalue(&s_object(i)))
-#define s_svalue(i)	(svalue(&s_object(i)))
-#define s_tsvalue(i)	(tsvalue(&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)))
-
-#define get_word(code,pc) {memcpy(&code, pc, sizeof(Word)); pc+=sizeof(Word);}
-#define get_float(code,pc){memcpy(&code, pc, sizeof(real)); pc+=sizeof(real);}
-#define get_code(code,pc) {memcpy(&code, pc, sizeof(TFunc *)); \
-                           pc+=sizeof(TFunc *);}
-
-
-/* Exported functions */
-void    lua_parse      (TFunc *tf);	/* from "lua.stx" module */
-void	luaI_codedebugline (int line);  /* from "lua.stx" module */
-void    lua_travstack (int (*fn)(TObject *));
-TObject *luaI_Address (lua_Object o);
-void	luaI_pushobject (TObject *o);
-void    luaI_gcIM       (TObject *o);
-int     luaI_dorun (TFunc *tf);
-int     lua_domain (void);
-
-#endif

strlib.c

@@ -1,535 +0,0 @@
-/*
-** strlib.c
-** String library to LUA
-*/
-
-char *rcs_strlib="$Id: strlib.c,v 1.45 1997/06/19 17:45:28 roberto Exp roberto $";
-
-#include <string.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <ctype.h>
-
-#include "lua.h"
-#include "auxlib.h"
-#include "lualib.h"
-
-
-struct lbuff {
-  char *b;
-  size_t max;
-  size_t size;
-};
-
-static struct lbuff lbuffer = {NULL, 0, 0};
-
-
-static char *strbuffer (unsigned long size)
-{
-  if (size > lbuffer.max) {
-    /* ANSI "realloc" doesn't need this test, but some machines (Sun!)
-       don't follow ANSI */
-    lbuffer.b = (lbuffer.b) ? realloc(lbuffer.b, lbuffer.max=size) :
-                              malloc(lbuffer.max=size);
-    if (lbuffer.b == NULL)
-      lua_error("memory overflow");
-  }
-  return lbuffer.b;
-}
-
-static char *openspace (unsigned long size)
-{
-  char *buff = strbuffer(lbuffer.size+size);
-  return buff+lbuffer.size;
-}
-
-char *luaI_addchar (int c)
-{
-  if (lbuffer.size >= lbuffer.max)
-    strbuffer(lbuffer.max == 0 ? 100 : lbuffer.max*2);
-  lbuffer.b[lbuffer.size++] = c;
-  return lbuffer.b;
-}
-
-void luaI_emptybuff (void)
-{
-  lbuffer.size = 0;  /* prepare for next string */
-}
-
-
-static void addnchar (char *s, int n)
-{
-  char *b = openspace(n);
-  strncpy(b, s, n);
-  lbuffer.size += n;
-}
-
-static void addstr (char *s)
-{
-  addnchar(s, strlen(s));
-}
-
-
-/*
-** Return the string length
-*/
-static void str_len (void)
-{
- lua_pushnumber(strlen(luaL_check_string(1)));
-}
-
-/*
-** Return the substring of a string
-*/
-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) {
-    luaI_emptybuff();
-    addnchar(s+start-1, end-start+1);
-    lua_pushstring(luaI_addchar(0));
-  }
-  else lua_pushstring("");
-}
-
-/*
-** Convert a string to lower case.
-*/
-static void str_lower (void)
-{
-  char *s;
-  luaI_emptybuff();
-  for (s = luaL_check_string(1); *s; s++)
-    luaI_addchar(tolower((unsigned char)*s));
-  lua_pushstring(luaI_addchar(0));
-}
-
-/*
-** Convert a string to upper case.
-*/
-static void str_upper (void)
-{
-  char *s;
-  luaI_emptybuff();
-  for (s = luaL_check_string(1); *s; s++)
-    luaI_addchar(toupper((unsigned char)*s));
-  lua_pushstring(luaI_addchar(0));
-}
-
-static void str_rep (void)
-{
-  char *s = luaL_check_string(1);
-  int n = (int)luaL_check_number(2);
-  luaI_emptybuff();
-  while (n-- > 0)
-    addstr(s);
-  lua_pushstring(luaI_addchar(0));
-}
-
-/*
-** get ascii value of a character in a string
-*/
-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 ESC	'%'
-#define SPECIALS  "^$*?.([%-"
-
-static char *bracket_end (char *p)
-{
-  return (*p == 0) ? NULL : strchr((*p=='^') ? p+2 : p+1, ']');
-}
-
-char *luaL_item_end (char *p)
-{
-  switch (*p++) {
-    case '\0': return p-1;
-    case ESC:
-      if (*p == 0) luaL_verror("incorrect pattern (ends with `%c')", ESC);
-      return p+1;
-    case '[': {
-      char *end = bracket_end(p);
-      if (end == NULL) lua_error("incorrect pattern (missing `]')");
-      return end+1;
-    }
-    default:
-      return p;
-  }
-}
-
-static int matchclass (int c, int cl)
-{
-  int res;
-  switch (tolower((unsigned char)cl)) {
-    case 'a' : res = isalpha((unsigned char)c); break;
-    case 'c' : res = iscntrl((unsigned char)c); break;
-    case 'd' : res = isdigit((unsigned char)c); break;
-    case 'l' : res = islower((unsigned char)c); break;
-    case 'p' : res = ispunct((unsigned char)c); break;
-    case 's' : res = isspace((unsigned char)c); break;
-    case 'u' : res = isupper((unsigned char)c); break;
-    case 'w' : res = isalnum((unsigned char)c); break;
-    default: return (cl == c);
-  }
-  return (islower((unsigned char)cl) ? res : !res);
-}
-
-int luaL_singlematch (int c, char *p)
-{
-  if (c == 0) return 0;
-  switch (*p) {
-    case '.': return 1;
-    case ESC: return matchclass(c, *(p+1));
-    case '[': {
-      char *end = bracket_end(p+1);
-      int sig = *(p+1) == '^' ? (p++, 0) : 1;
-      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: return (*p == c);
-  }
-}
-
-#define MAX_CAPT 9
-
-static struct {
-  char *init;
-  int len;  /* -1 signals unfinished capture */
-} capture[MAX_CAPT];
-
-static int num_captures;  /* only valid after a sucessful call to match */
-
-
-static void push_captures (void)
-{
-  int i;
-  for (i=0; i<num_captures; i++) {
-    int l = capture[i].len;
-    char *buff = openspace(l+1);
-    if (l == -1) lua_error("unfinished capture");
-    strncpy(buff, capture[i].init, l);
-    buff[l] = 0;
-    lua_pushstring(buff);
-  }
-}
-
-static int check_cap (int l, int level)
-{
-  l -= '1';
-  if (!(0 <= l && l < level && capture[l].len != -1))
-    lua_error("invalid capture index");
-  return l;
-}
-
-static int capture_to_close (int level)
-{
-  for (level--; level>=0; level--)
-    if (capture[level].len == -1) return level;
-  lua_error("invalid pattern capture");
-  return 0;  /* to avoid warnings */
-}
-
-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 *match (char *s, char *p, int level)
-{
-  init: /* using goto's to optimize tail recursion */
-  switch (*p) {
-    case '(':  /* start capture */
-      if (level >= MAX_CAPT) lua_error("too many captures");
-      capture[level].init = s;
-      capture[level].len = -1;
-      level++; p++; goto init;  /* return match(s, p+1, level); */
-    case ')': {  /* end capture */
-      int l = capture_to_close(level);
-      char *res;
-      capture[l].len = s - capture[l].init;  /* close capture */
-      if ((res = match(s, p+1, level)) == NULL) /* match failed? */
-        capture[l].len = -1;  /* undo capture */
-      return res;
-    }
-    case ESC:
-      if (isdigit((unsigned char)(*(p+1)))) {  /* capture */
-        int l = check_cap(*(p+1), level);
-        if (strncmp(capture[l].init, s, capture[l].len) == 0) {
-          /* return match(p+2, s+capture[l].len, level); */
-          p+=2; s+=capture[l].len; goto init;
-        }
-        else return NULL;
-      }
-      else if (*(p+1) == 'b') {  /* balanced string */
-        if (*(p+2) == 0 || *(p+3) == 0)
-          lua_error("bad balanced pattern specification");
-        s = matchbalance(s, *(p+2), *(p+3));
-        if (s == NULL) return NULL;
-        else {  /* return match(p+4, s, level); */
-          p+=4; goto init;
-        }
-      }
-      else goto dflt;
-    case '\0': case '$':  /* (possibly) end of pattern */
-      if (*p == 0 || (*(p+1) == 0 && *s == 0)) {
-        num_captures = level;
-        return s;
-      }
-      else goto dflt;
-    default: dflt: {  /* it is a pattern item */
-      int m = luaL_singlematch(*s, p);
-      char *ep = luaL_item_end(p);  /* get what is next */
-      switch (*ep) {
-        case '*': {  /* repetition */
-          char *res;
-          if (m && (res = match(s+1, p, level)))
-            return res;
-          p=ep+1; goto init;  /* else return match(s, ep+1, level); */
-        }
-        case '-': {  /* repetition */
-          char *res;
-          if ((res = match(s, ep+1, level)) != 0)
-            return res;
-          else if (m) {
-            s++;
-            goto init;  /* return match(s+1, p, level); */
-          }
-          else
-            return NULL;
-        }
-        case '?': {  /* optional */
-          char *res;
-          if (m && (res = match(s+1, ep+1, level)))
-            return res;
-          p=ep+1; goto init;  /* else return match(s, ep+1, level); */
-        }
-        default:
-          if (m) { s++; p=ep; goto init; }  /* return match(s+1, ep, level); */
-          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 {
-      char *res;
-      if ((res=match(s1, p, 0)) != NULL) {
-        lua_pushnumber(s1-s+1);  /* start */
-        lua_pushnumber(res-s);   /* end */
-        push_captures();
-        return;
-      }
-    } while (*s1++ && !anchor);
-  }
-}
-
-static void add_s (lua_Object newp, lua_Object table, int n)
-{
-  if (lua_isstring(newp)) {
-    char *news = lua_getstring(newp);
-    while (*news) {
-      if (*news != ESC || !isdigit((unsigned char)*++news))
-        luaI_addchar(*news++);
-      else {
-        int l = check_cap(*news++, num_captures);
-        addnchar(capture[l].init, capture[l].len);
-      }
-    }
-  }
-  else if (lua_isfunction(newp)) {
-    lua_Object res;
-    struct lbuff oldbuff;
-    int status;
-    lua_beginblock();
-    if (lua_istable(table)) {
-      lua_pushobject(table);
-      lua_pushnumber(n);
-    }
-    push_captures();
-    /* function may use lbuffer, so save it and create a new one */
-    oldbuff = lbuffer;
-    lbuffer.b = NULL; lbuffer.max = lbuffer.size = 0;
-    status = lua_callfunction(newp);
-    /* restore old buffer */
-    free(lbuffer.b);
-    lbuffer = oldbuff;
-    if (status != 0)
-      lua_error(NULL);
-    res = lua_getresult(1);
-    addstr(lua_isstring(res) ? lua_getstring(res) : "");
-    lua_endblock();
-  }
-  else luaL_arg_check(0, 3, NULL);
-}
-
-static void str_gsub (void)
-{
-  char *src = luaL_check_string(1);
-  char *p = luaL_check_string(2);
-  lua_Object newp = lua_getparam(3);
-  lua_Object table = lua_getparam(4);
-  int max_s = (int)luaL_opt_number(lua_istable(table)?5:4, strlen(src)+1);
-  int anchor = (*p == '^') ? (p++, 1) : 0;
-  int n = 0;
-  luaI_emptybuff();
-  while (n < max_s) {
-    char *e = match(src, p, 0);
-    if (e) {
-      n++;
-      add_s(newp, table, n);
-    }
-    if (e && e>src) /* non empty match? */
-      src = e;  /* skip it */
-    else if (*src)
-      luaI_addchar(*src++);
-    else break;
-    if (anchor) break;
-  }
-  addstr(src);
-  lua_pushstring(luaI_addchar(0));
-  lua_pushnumber(n);  /* number of substitutions */
-}
-
-static void str_set (void)
-{
-  char *item = luaL_check_string(1);
-  int i;
-  luaL_arg_check(*luaL_item_end(item) == 0, 1, "wrong format");
-  luaI_emptybuff();
-  for (i=1; i<256; i++)  /* 0 cannot be part of a set */
-    if (luaL_singlematch(i, item))
-      luaI_addchar(i);
-  lua_pushstring(luaI_addchar(0));
-}
-
-
-void luaI_addquoted (char *s)
-{
-  luaI_addchar('"');
-  for (; *s; s++) {
-    if (strchr("\"\\\n", *s))
-      luaI_addchar('\\');
-    luaI_addchar(*s);
-  }
-  luaI_addchar('"');
-}
-
-#define MAX_FORMAT 200
-
-static void str_format (void)
-{
-  int arg = 1;
-  char *strfrmt = luaL_check_string(arg++);
-  luaI_emptybuff();  /* initialize */
-  while (*strfrmt) {
-    if (*strfrmt != '%')
-      luaI_addchar(*strfrmt++);
-    else if (*++strfrmt == '%')
-      luaI_addchar(*strfrmt++);  /* %% */
-    else { /* format item */
-      char form[MAX_FORMAT];      /* store the format ('%...') */
-      char *buff;
-      char *initf = strfrmt-1;  /* -1 to include % */
-      strfrmt = match(strfrmt, "[-+ #]*(%d*)%.?(%d*)", 0);
-      if (capture[0].len > 3 || capture[1].len > 3)  /* < 1000? */
-        lua_error("invalid format (width or precision too long)");
-      strncpy(form, initf, strfrmt-initf+1); /* +1 to include convertion */
-      form[strfrmt-initf+1] = 0;
-      buff = openspace(1000);  /* to store the formated value */
-      switch (*strfrmt++) {
-        case 'q':
-          luaI_addquoted(luaL_check_string(arg++));
-          continue;
-        case 's': {
-          char *s = luaL_check_string(arg++);
-          buff = 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':
-          sprintf(buff, form, luaL_check_number(arg++));
-          break;
-        default:  /* also treat cases 'pnLlh' */
-          lua_error("invalid format option in function `format'");
-      }
-      lbuffer.size += strlen(buff);
-    }
-  }
-  lua_pushstring(luaI_addchar(0));  /* push the result */
-}
-
-
-static struct luaL_reg strlib[] = {
-{"strlen", str_len},
-{"strsub", str_sub},
-{"strset", str_set},
-{"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])));
-}

strlib.h

@@ -1,13 +0,0 @@
-/*
-** String library to LUA
-** TeCGraf - PUC-Rio
-** $Id: $
-*/
-
-
-#ifndef strlib_h
-
-void strlib_open (void);
-
-#endif
-

table.c

@@ -1,266 +0,0 @@
-/*
-** table.c
-** Module to control static tables
-*/
-
-char *rcs_table="$Id: table.c,v 2.71 1997/06/09 17:28:14 roberto Exp roberto $";
-
-#include "luamem.h"
-#include "auxlib.h"
-#include "func.h"
-#include "opcode.h"
-#include "tree.h"
-#include "hash.h"
-#include "table.h"
-#include "inout.h"
-#include "lua.h"
-#include "fallback.h"
-#include "luadebug.h"
-
-
-#define BUFFER_BLOCK 256
-
-Symbol *lua_table = NULL;
-Word lua_ntable = 0;
-static Long lua_maxsymbol = 0;
-
-TaggedString **lua_constant = NULL;
-Word lua_nconstant = 0;
-static Long lua_maxconstant = 0;
-
-
-#define GARBAGE_BLOCK 100
-
-
-void luaI_initsymbol (void)
-{
-  lua_maxsymbol = BUFFER_BLOCK;
-  lua_table = newvector(lua_maxsymbol, Symbol);
-  luaI_predefine();
-}
-
-
-/*
-** Initialise constant table with pre-defined constants
-*/
-void luaI_initconstant (void)
-{
- lua_maxconstant = BUFFER_BLOCK;
- lua_constant = newvector(lua_maxconstant, TaggedString *);
- /* pre-register mem error messages, to avoid loop when error arises */
- luaI_findconstantbyname(tableEM);
- luaI_findconstantbyname(memEM);
-}
-
-
-/*
-** Given a name, search it at symbol table and return its index. If not
-** found, allocate it.
-*/
-Word luaI_findsymbol (TaggedString *t)
-{
- if (t->u.s.varindex == NOT_USED)
- {
-  if (lua_ntable == lua_maxsymbol)
-    lua_maxsymbol = growvector(&lua_table, lua_maxsymbol, Symbol,
-                      symbolEM, MAX_WORD);
-  t->u.s.varindex = lua_ntable;
-  lua_table[lua_ntable].varname = t;
-  s_ttype(lua_ntable) = LUA_T_NIL;
-  lua_ntable++;
- }
- return t->u.s.varindex;
-}
-
-
-Word luaI_findsymbolbyname (char *name)
-{
-  return luaI_findsymbol(luaI_createfixedstring(name));
-}
-
-
-/*
-** Given a tree node, check it is has a correspondent constant index. If not,
-** allocate it.
-*/
-Word luaI_findconstant (TaggedString *t)
-{
- if (t->u.s.constindex == NOT_USED)
- {
-  if (lua_nconstant == lua_maxconstant)
-    lua_maxconstant = growvector(&lua_constant, lua_maxconstant, TaggedString *,
-                        constantEM, MAX_WORD);
-  t->u.s.constindex = lua_nconstant;
-  lua_constant[lua_nconstant] = t;
-  lua_nconstant++;
- }
- return t->u.s.constindex;
-}
-
-
-Word  luaI_findconstantbyname (char *name)
-{
-  return luaI_findconstant(luaI_createfixedstring(name));
-}
-
-TaggedString *luaI_createfixedstring (char *name)
-{
-  TaggedString *ts = lua_createstring(name);
-  if (!ts->marked)
-    ts->marked = 2;  /* avoid GC */
-  return ts;
-}
-
-
-int luaI_globaldefined (char *name)
-{
-  return ttype(&lua_table[luaI_findsymbolbyname(name)].object) != LUA_T_NIL;
-}
-
-
-/*
-** Traverse symbol table objects
-*/
-static char *lua_travsymbol (int (*fn)(TObject *))
-{
- Word i;
- for (i=0; i<lua_ntable; i++)
-  if (fn(&s_object(i)))
-    return lua_table[i].varname->str;
- return NULL;
-}
-
-
-/*
-** Mark an object if it is a string or a unmarked array.
-*/
-int lua_markobject (TObject *o)
-{/* if already marked, does not change mark value */
- if (ttype(o) == LUA_T_USERDATA ||
-     (ttype(o) == LUA_T_STRING && !tsvalue(o)->marked))
-   tsvalue(o)->marked = 1;
- else if (ttype(o) == LUA_T_ARRAY)
-   lua_hashmark (avalue(o));
- else if ((o->ttype == LUA_T_FUNCTION || o->ttype == LUA_T_MARK)
-           && !o->value.tf->marked)
-   o->value.tf->marked = 1;
- return 0;
-}
-
-/*
-* returns 0 if the object is going to be (garbage) collected
-*/
-int luaI_ismarked (TObject *o)
-{
-  switch (o->ttype)
-  {
-   case LUA_T_STRING: case LUA_T_USERDATA:
-     return o->value.ts->marked;
-   case LUA_T_FUNCTION:
-    return o->value.tf->marked;
-   case LUA_T_ARRAY:
-    return o->value.a->mark;
-   default:  /* nil, number, cfunction, or user data */
-    return 1;
-  }
-}
-
-
-static void call_nilIM (void)
-{ /* signals end of garbage collection */
-  TObject t;
-  ttype(&t) = LUA_T_NIL;
-  luaI_gcIM(&t);  /* end of list */
-}
-
-/*
-** Garbage collection. 
-** Delete all unused strings and arrays.
-*/
-static long gc_block = GARBAGE_BLOCK;
-static long gc_nentity = 0;  /* total of strings, arrays, etc */
-
-static void markall (void)
-{
-  lua_travstack(lua_markobject); /* mark stack objects */
-  lua_travsymbol(lua_markobject); /* mark symbol table objects */
-  luaI_travlock(lua_markobject); /* mark locked objects */
-  luaI_travfallbacks(lua_markobject);  /* mark fallbacks */
-}
-
-
-long lua_collectgarbage (long limit)
-{
-  long recovered = 0;
-  Hash *freetable;
-  TaggedString *freestr;
-  TFunc *freefunc;
-  markall();
-  luaI_invalidaterefs();
-  freetable = luaI_hashcollector(&recovered);
-  freestr = luaI_strcollector(&recovered);
-  freefunc = luaI_funccollector(&recovered);
-  gc_nentity -= recovered;
-  gc_block = (limit == 0) ? 2*(gc_block-recovered) : gc_nentity+limit;
-  luaI_hashcallIM(freetable);
-  luaI_strcallIM(freestr);
-  call_nilIM();
-  luaI_hashfree(freetable);
-  luaI_strfree(freestr);
-  luaI_funcfree(freefunc);
-  return recovered;
-} 
-
-
-void lua_pack (void)
-{
-  if (++gc_nentity >= gc_block)
-    lua_collectgarbage(0);
-} 
-
-
-/*
-** Internal function: return next global variable
-*/
-void luaI_nextvar (void)
-{
-  Word next;
-  if (lua_isnil(lua_getparam(1)))
-    next = 0;
-  else 
-    next = luaI_findsymbolbyname(luaL_check_string(1)) + 1;
-  while (next < lua_ntable && s_ttype(next) == LUA_T_NIL)
-    next++;
-  if (next < lua_ntable) {
-    lua_pushstring(lua_table[next].varname->str);
-    luaI_pushobject(&s_object(next));
-  }
-}
-
-
-static TObject *functofind;
-static int checkfunc (TObject *o)
-{
-  if (o->ttype == LUA_T_FUNCTION)
-    return
-       ((functofind->ttype == LUA_T_FUNCTION || functofind->ttype == LUA_T_MARK)
-            && (functofind->value.tf == o->value.tf));
-  if (o->ttype == LUA_T_CFUNCTION)
-    return
-       ((functofind->ttype == LUA_T_CFUNCTION ||
-         functofind->ttype == LUA_T_CMARK) &&
-         (functofind->value.f == o->value.f));
-  return 0;
-}
-
-
-char *lua_getobjname (lua_Object o, char **name)
-{ /* try to find a name for given function */
-  functofind = luaI_Address(o);
-  if ((*name = luaI_travfallbacks(checkfunc)) != NULL)
-    return "tag-method";
-  else if ((*name = lua_travsymbol(checkfunc)) != NULL)
-    return "global";
-  else return "";
-}
-

table.h

@@ -1,39 +0,0 @@
-/*
-** Module to control static tables
-** TeCGraf - PUC-Rio
-** $Id: table.h,v 2.24 1997/04/07 14:48:53 roberto Exp roberto $
-*/
-
-#ifndef table_h
-#define table_h
-
-#include "tree.h"
-#include "opcode.h"
-
-typedef struct
-{
- TObject  object;
- TaggedString *varname;
-} Symbol;
-
-
-extern Symbol *lua_table;
-extern Word lua_ntable;
-extern TaggedString **lua_constant;
-extern Word lua_nconstant;
-
-void luaI_initsymbol (void);
-void  luaI_initconstant (void);
-Word  luaI_findsymbolbyname (char *name);
-Word  luaI_findsymbol      (TaggedString *t);
-Word  luaI_findconstant    (TaggedString *t);
-Word  luaI_findconstantbyname (char *name);
-int luaI_globaldefined (char *name);
-void luaI_nextvar (void);
-TaggedString *luaI_createfixedstring  (char *str);
-int   lua_markobject      (TObject *o);
-int luaI_ismarked (TObject *o);
-void  lua_pack            (void);
-
-
-#endif

tree.c

@@ -1,211 +0,0 @@
-/*
-** tree.c
-** TecCGraf - PUC-Rio
-*/
- 
-char *rcs_tree="$Id: tree.c,v 1.27 1997/06/09 17:28:14 roberto Exp roberto $";
-
-
-#include <string.h>
-
-#include "luamem.h"
-#include "lua.h"
-#include "tree.h"
-#include "lex.h"
-#include "hash.h"
-#include "table.h"
-#include "fallback.h"
-
-
-#define NUM_HASHS  64
-
-typedef struct {
-  int size;
-  int nuse;  /* number of elements (including EMPTYs) */
-  TaggedString **hash;
-} stringtable;
-
-static int initialized = 0;
-
-static stringtable string_root[NUM_HASHS];
-
-static TaggedString EMPTY = {LUA_T_STRING, NULL, {{NOT_USED, NOT_USED}},
-                             0, 2, {0}};
-
-
-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 luaI_inittree (void)
-{
-  int i;
-  for (i=0; i<NUM_HASHS; i++) {
-    string_root[i].size = 0;
-    string_root[i].nuse = 0;
-    string_root[i].hash = NULL;
-  }
-}
-
-
-static void initialize (void)
-{
-  initialized = 1;
-  luaI_inittree();
-  luaI_addReserved();
-  luaI_initsymbol();
-  luaI_initconstant();
-  luaI_initfallbacks();
-}
-
-
-static void grow (stringtable *tb)
-{
-  int newsize = luaI_redimension(tb->size);
-  TaggedString **newhash = 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++;
-    }
-  luaI_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) {
-    ts = (TaggedString *)luaI_malloc(sizeof(TaggedString)+strlen(buff));
-    strcpy(ts->str, buff);
-    ts->u.s.varindex = ts->u.s.constindex = NOT_USED;
-    ts->tag = LUA_T_STRING;
-  }
-  else {
-    ts = (TaggedString *)luaI_malloc(sizeof(TaggedString));
-    ts->u.v = buff;
-    ts->tag = tag == LUA_ANYTAG ? 0 : tag;
-  }
-  ts->marked = 0;
-  ts->hash = h;
-  return ts;
-}
-
-static TaggedString *insert (char *buff, int tag, stringtable *tb)
-{
-  TaggedString *ts;
-  unsigned long h = hash(buff, tag);
-  int i;
-  int j = -1;
-  if ((Long)tb->nuse*3 >= (Long)tb->size*2)
-  {
-    if (!initialized)
-      initialize();
-    grow(tb);
-  }
-  i = h%tb->size;
-  while ((ts = tb->hash[i]) != NULL)
-  {
-    if (ts == &EMPTY)
-      j = i;
-    else if ((ts->tag == LUA_T_STRING) ?
-              (tag == LUA_T_STRING && (strcmp(buff, ts->str) == 0)) :
-              ((tag == ts->tag || tag == LUA_ANYTAG) && buff == ts->u.v))
-      return ts;
-    i = (i+1)%tb->size;
-  }
-  /* not found */
-  lua_pack();
-  if (j != -1)  /* is there an EMPTY space? */
-    i = j;
-  else
-    tb->nuse++;
-  ts = tb->hash[i] = newone(buff, tag, h);
-  return ts;
-}
-
-TaggedString *luaI_createudata (void *udata, int tag)
-{
-  return insert(udata, tag, &string_root[(unsigned)udata%NUM_HASHS]);
-}
-
-TaggedString *lua_createstring (char *str)
-{
-  return insert(str, LUA_T_STRING, &string_root[(unsigned)str[0]%NUM_HASHS]);
-}
-
-
-void luaI_strcallIM (TaggedString *l)
-{
-  TObject o;
-  ttype(&o) = LUA_T_USERDATA;
-  for (; l; l=l->next) {
-    tsvalue(&o) = l;
-    luaI_gcIM(&o);
-  }
-}
-
-
-void luaI_strfree (TaggedString *l)
-{
-  while (l) {
-    TaggedString *next = l->next;
-    luaI_free(l);
-    l = next;
-  }
-}
-
-
-/*
-** Garbage collection function.
-*/
-TaggedString *luaI_strcollector (long *acum)
-{
-  Long counter = 0;
-  TaggedString *frees = NULL;
-  int i;
-  for (i=0; i<NUM_HASHS; i++)
-  {
-    stringtable *tb = &string_root[i];
-    int j;
-    for (j=0; j<tb->size; j++)
-    {
-      TaggedString *t = tb->hash[j];
-      if (t != NULL && t->marked <= 1)
-      {
-        if (t->marked)
-          t->marked = 0;
-        else
-        {
-          t->next = frees;
-          frees = t;
-          tb->hash[j] = &EMPTY;
-          counter++;
-        }
-      }
-    }
-  }
-  *acum += counter;
-  return frees;
-}
-

tree.h

@@ -1,38 +0,0 @@
-/*
-** tree.h
-** TecCGraf - PUC-Rio
-** $Id: tree.h,v 1.17 1997/05/14 18:38:29 roberto Exp roberto $
-*/
-
-#ifndef tree_h
-#define tree_h
-
-#include "types.h"
-
-#define NOT_USED  0xFFFE
-
-
-typedef struct TaggedString
-{
-  int tag;  /* if != LUA_T_STRING, this is a userdata */
-  struct TaggedString *next;
-  union {
-    struct {
-      Word varindex;  /* != NOT_USED  if this is a symbol */
-      Word constindex;  /* != NOT_USED  if this is a constant */
-    } s;
-    void *v;  /* if this is a userdata, here is its value */
-  } u;
-  unsigned long hash;  /* 0 if not initialized */
-  int marked;   /* for garbage collection; never collect (nor change) if > 1 */
-  char str[1];   /* \0 byte already reserved */
-} TaggedString;
- 
-
-TaggedString *lua_createstring (char *str);
-TaggedString *luaI_createudata (void *udata, int tag);
-TaggedString *luaI_strcollector (long *cont);
-void luaI_strfree (TaggedString *l);
-void luaI_strcallIM (TaggedString *l);
-
-#endif

types.h

@@ -1,29 +0,0 @@
-/*
-** TeCGraf - PUC-Rio
-** $Id: types.h,v 1.3 1995/02/06 19:32:43 roberto Exp roberto $
-*/
-
-#ifndef types_h
-#define types_h
-
-#include <limits.h>
-
-#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 Word lua_Word	/* some systems have Word as a predefined type */
-typedef unsigned short Word;  /* unsigned 16 bits */
-
-#define MAX_WORD  (USHRT_MAX-2)  /* maximum value of a word (-2 for safety) */
-#define MAX_INT   (INT_MAX-2)  /* maximum value of a int (-2 for safety) */
-
-#define Long lua_Long	/* some systems have Long as a predefined type */
-typedef signed long  Long;  /* 32 bits */
-
-typedef unsigned int IntPoint; /* unsigned with same size as a pointer (for hashing) */
-
-#endif

undump.c

@@ -1,330 +0,0 @@
-/*
-** undump.c
-** load bytecodes from files
-*/
-
-char* rcs_undump="$Id: undump.c,v 1.23 1997/06/16 16:50:22 roberto Exp roberto $";
-
-#include <stdio.h>
-#include <string.h>
-#include "auxlib.h"
-#include "opcode.h"
-#include "luamem.h"
-#include "table.h"
-#include "undump.h"
-#include "zio.h"
-
-static int swapword=0;
-static int swapfloat=0;
-static TFunc* Main=NULL;			/* functions in a chunk */
-static TFunc* lastF=NULL;
-
-static void FixCode(Byte* code, Byte* end)	/* swap words */
-{
- Byte* p;
- for (p=code; p!=end;)
- {
-	int op=*p;
-	switch (op)
-	{
-	case PUSHNIL:
-	case PUSH0:
-	case PUSH1:
-	case PUSH2:
-	case PUSHLOCAL0:
-	case PUSHLOCAL1:
-	case PUSHLOCAL2:
-	case PUSHLOCAL3:
-	case PUSHLOCAL4:
-	case PUSHLOCAL5:
-	case PUSHLOCAL6:
-	case PUSHLOCAL7:
-	case PUSHLOCAL8:
-	case PUSHLOCAL9:
-	case PUSHINDEXED:
-	case STORELOCAL0:
-	case STORELOCAL1:
-	case STORELOCAL2:
-	case STORELOCAL3:
-	case STORELOCAL4:
-	case STORELOCAL5:
-	case STORELOCAL6:
-	case STORELOCAL7:
-	case STORELOCAL8:
-	case STORELOCAL9:
-	case STOREINDEXED0:
-	case ADJUST0:
-	case EQOP:
-	case LTOP:
-	case LEOP:
-	case GTOP:
-	case GEOP:
-	case ADDOP:
-	case SUBOP:
-	case MULTOP:
-	case DIVOP:
-	case POWOP:
-	case CONCOP:
-	case MINUSOP:
-	case NOTOP:
-	case POP:
-	case RETCODE0:
-		p++;
-		break;
-	case PUSHBYTE:
-	case PUSHLOCAL:
-	case STORELOCAL:
-	case STOREINDEXED:
-	case STORELIST0:
-	case ADJUST:
-	case RETCODE:
-	case VARARGS:
-	case STOREMAP:
-		p+=2;
-		break;
-	case STORELIST:
-	case CALLFUNC:
-		p+=3;
-		break;
-	case PUSHFUNCTION:
-		p+=5;			/* TODO: use sizeof(TFunc*) or old? */
-		break;
-	case PUSHWORD:
-	case PUSHSELF:
-	case CREATEARRAY:
-	case ONTJMP:
-	case ONFJMP:
-	case JMP:
-	case UPJMP:
-	case IFFJMP:
-	case IFFUPJMP:
-	case SETLINE:
-	case PUSHSTRING:
-	case PUSHGLOBAL:
-	case STOREGLOBAL:
-	{
-		Byte t;
-		t=p[1]; p[1]=p[2]; p[2]=t;
-		p+=3;
-		break;
-	}
-	case PUSHFLOAT:			/* assumes sizeof(float)==4 */
-	{
-		Byte t;
-		t=p[1]; p[1]=p[4]; p[4]=t;
-		t=p[2]; p[2]=p[3]; p[3]=t;
-		p+=5;
-		break;
-	}
-	case STORERECORD:
-	{
-		int n=*++p;
-		p++;
-		while (n--)
-		{
-			Byte t;
-			t=p[0]; p[0]=p[1]; p[1]=t;
-			p+=2;
-		}
-		break;
-	}
-	default:
-		luaL_verror("corrupt binary file: bad opcode %d at %d\n",
-			op,(int)(p-code));
-		break;
-	}
- }
-}
-
-static void Unthread(Byte* code, int i, int v)
-{
- while (i!=0)
- {
-  Word w;
-  Byte* p=code+i;
-  memcpy(&w,p,sizeof(w));
-  i=w; w=v;
-  memcpy(p,&w,sizeof(w));
- }
-}
-
-static int LoadWord(ZIO* Z)
-{
- Word w;
- zread(Z,&w,sizeof(w));
- if (swapword)
- {
-  Byte* p=(Byte*)&w;
-  Byte t;
-  t=p[0]; p[0]=p[1]; p[1]=t;
- }
- return w;
-}
-
-static int LoadSize(ZIO* Z)
-{
- Word hi=LoadWord(Z);
- Word lo=LoadWord(Z);
- int s=(hi<<16)|lo;
- if ((Word)s != s) lua_error("code too long");
- return s;
-}
-
-static void* LoadBlock(int size, ZIO* Z)
-{
- void* b=luaI_malloc(size);
- zread(Z,b,size);
- return b;
-}
-
-static char* LoadString(ZIO* Z)
-{
- int size=LoadWord(Z);
- char *b=luaI_buffer(size);
- zread(Z,b,size);
- return b;
-}
-
-static char* LoadNewString(ZIO* Z)
-{
- return LoadBlock(LoadWord(Z),Z);
-}
-
-static void LoadFunction(ZIO* Z)
-{
- TFunc* tf=new(TFunc);
- tf->next=NULL;
- tf->locvars=NULL;
- tf->size=LoadSize(Z);
- tf->lineDefined=LoadWord(Z);
- if (IsMain(tf))				/* new main */
- {
-  tf->fileName=LoadNewString(Z);
-  Main=lastF=tf;
- }
- else						/* fix PUSHFUNCTION */
- {
-  tf->marked=LoadWord(Z);
-  tf->fileName=Main->fileName;
-  memcpy(Main->code+tf->marked,&tf,sizeof(tf));
-  lastF=lastF->next=tf;
- }
- tf->code=LoadBlock(tf->size,Z);
- if (swapword || swapfloat) FixCode(tf->code,tf->code+tf->size);
- while (1)					/* unthread */
- {
-  int c=zgetc(Z);
-  if (c==ID_VAR)				/* global var */
-  {
-   int i=LoadWord(Z);
-   char* s=LoadString(Z);
-   int v=luaI_findsymbolbyname(s);
-   Unthread(tf->code,i,v);
-  }
-  else if (c==ID_STR)				/* constant string */
-  {
-   int i=LoadWord(Z);
-   char* s=LoadString(Z);
-   int v=luaI_findconstantbyname(s);
-   Unthread(tf->code,i,v);
-  }
-  else
-  {
-   zungetc(Z);
-   break;
-  }
- }
-}
-
-static void LoadSignature(ZIO* Z)
-{
- char* s=SIGNATURE;
- while (*s!=0 && zgetc(Z)==*s)
-  ++s;
- if (*s!=0) lua_error("cannot load binary file: bad signature");
-}
-
-static void LoadHeader(ZIO* Z)
-{
- Word w,tw=TEST_WORD;
- float f,tf=TEST_FLOAT;
- int version;
- LoadSignature(Z);
- version=zgetc(Z);
- if (version>0x23)				/* after 2.5 */
- {
-  int oldsizeofW=zgetc(Z);
-  int oldsizeofF=zgetc(Z);
-  int oldsizeofP=zgetc(Z);
-  if (oldsizeofW!=2)
-   luaL_verror(
-	"cannot load binary file created on machine with sizeof(Word)=%d; "
-	"expected 2",oldsizeofW);
-  if (oldsizeofF!=4)
-   luaL_verror(
-	"cannot load binary file created on machine with sizeof(float)=%d; "
-	"expected 4\nnot an IEEE machine?",oldsizeofF);
-  if (oldsizeofP!=sizeof(TFunc*))		/* TODO: pack? */
-   luaL_verror(
-	"cannot load binary file created on machine with sizeof(TFunc*)=%d; "
-	"expected %d",oldsizeofP,(int)sizeof(TFunc*));
- }
- zread(Z,&w,sizeof(w));			/* test word */
- if (w!=tw)
- {
-  swapword=1;
- }
- zread(Z,&f,sizeof(f));			/* test float */
- if (f!=tf)
- {
-  Byte* p=(Byte*)&f;
-  Byte t;
-  swapfloat=1;
-  t=p[0]; p[0]=p[3]; p[3]=t;
-  t=p[1]; p[1]=p[2]; p[2]=t;
-  if (f!=tf)					/* TODO: try another perm? */
-   lua_error("cannot load binary file: unknown float representation");
- }
-}
-
-static void LoadChunk(ZIO* Z)
-{
- LoadHeader(Z);
- while (1)
- {
-  int c=zgetc(Z);
-  if (c==ID_FUN) LoadFunction(Z); else { zungetc(Z); break; }
- }
-}
-
-/*
-** load one chunk from a file.
-** return list of functions found, headed by main, or NULL at EOF.
-*/
-TFunc* luaI_undump1(ZIO* Z)
-{
- int c=zgetc(Z);
- if (c==ID_CHUNK)
- {
-  LoadChunk(Z);
-  return Main;
- }
- else if (c!=EOZ)
-   lua_error("not a lua binary file");
- return NULL;
-}
-
-/*
-** load and run all chunks in a file
-*/
-int luaI_undump(ZIO* Z)
-{
- TFunc* m;
- while ((m=luaI_undump1(Z)))
- {
-  int status=luaI_dorun(m);
-  luaI_freefunc(m);
-  if (status!=0) return status;
- }
- return 0;
-}

undump.h

@@ -1,30 +0,0 @@
-/*
-** undump.h
-** definitions for lua decompiler
-** $Id: undump.h,v 1.5 1997/06/16 16:50:22 roberto Exp roberto $
-*/
-
-#ifndef undump_h
-#define undump_h
-
-#include "func.h"
-#include "zio.h"
-
-#define IsMain(f)	(f->lineDefined==0)
-
-/* definitions for chunk headers */
-
-#define ID_CHUNK	27		/* ESC */
-#define ID_FUN		'F'
-#define ID_VAR		'V'
-#define ID_STR		'S'
-#define	SIGNATURE	"Lua"
-#define	VERSION		0x25		/* last format change was in 2.5 */
-#define	TEST_WORD	0x1234		/* a word for testing byte ordering */
-#define	TEST_FLOAT	0.123456789e-23	/* a float for testing representation */
-
-
-TFunc* luaI_undump1(ZIO* Z);
-int luaI_undump(ZIO* Z);		/* load all chunks */
-
-#endif