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ioef/code/botlib/l_precomp.c
Zack Middleton eea9fbdb61 Fix unchecked buffer size issues in l_script.c and l_precomp.c 
Found by Coverity.
2014-05-25 18:41:24 -05:00

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/*
===========================================================================
Copyright (C) 1999-2005 Id Software, Inc.
This file is part of Quake III Arena source code.
Quake III Arena source code is free software; you can redistribute it
and/or modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of the License,
or (at your option) any later version.
Quake III Arena source code is distributed in the hope that it will be
useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Quake III Arena source code; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
===========================================================================
*/
//
/*****************************************************************************
* name: l_precomp.c
*
* desc: pre compiler
*
* $Archive: /MissionPack/code/botlib/l_precomp.c $
*
*****************************************************************************/
//Notes: fix: PC_StringizeTokens
//#define SCREWUP
//#define BOTLIB
//#define QUAKE
//#define QUAKEC
//#define MEQCC
#ifdef SCREWUP
#include <stdio.h>
#include <stdlib.h>
#include <limits.h>
#include <string.h>
#include <stdarg.h>
#include <time.h>
#include "l_memory.h"
#include "l_script.h"
#include "l_precomp.h"
typedef enum {qfalse, qtrue} qboolean;
#endif //SCREWUP
#ifdef BOTLIB
#include "../qcommon/q_shared.h"
#include "botlib.h"
#include "be_interface.h"
#include "l_memory.h"
#include "l_script.h"
#include "l_precomp.h"
#include "l_log.h"
#endif //BOTLIB
#ifdef MEQCC
#include "qcc.h"
#include "time.h" //time & ctime
#include "math.h" //fabs
#include "l_memory.h"
#include "l_script.h"
#include "l_precomp.h"
#include "l_log.h"
#define qtrue true
#define qfalse false
#endif //MEQCC
#ifdef BSPC
//include files for usage in the BSP Converter
#include "../bspc/qbsp.h"
#include "../bspc/l_log.h"
#include "../bspc/l_mem.h"
#include "l_precomp.h"
#define qtrue true
#define qfalse false
#define Q_stricmp stricmp
#endif //BSPC
#if defined(QUAKE) && !defined(BSPC)
#include "l_utils.h"
#endif //QUAKE
//#define DEBUG_EVAL
#define MAX_DEFINEPARMS 128
#define DEFINEHASHING 1
//directive name with parse function
typedef struct directive_s
{
char *name;
int (*func)(source_t *source);
} directive_t;
#define DEFINEHASHSIZE 1024
#define TOKEN_HEAP_SIZE 4096
int numtokens;
/*
int tokenheapinitialized; //true when the token heap is initialized
token_t token_heap[TOKEN_HEAP_SIZE]; //heap with tokens
token_t *freetokens; //free tokens from the heap
*/
//list with global defines added to every source loaded
define_t *globaldefines;
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
void QDECL SourceError(source_t *source, char *str, ...)
{
char text[1024];
va_list ap;
va_start(ap, str);
Q_vsnprintf(text, sizeof(text), str, ap);
va_end(ap);
#ifdef BOTLIB
botimport.Print(PRT_ERROR, "file %s, line %d: %s\n", source->scriptstack->filename, source->scriptstack->line, text);
#endif //BOTLIB
#ifdef MEQCC
printf("error: file %s, line %d: %s\n", source->scriptstack->filename, source->scriptstack->line, text);
#endif //MEQCC
#ifdef BSPC
Log_Print("error: file %s, line %d: %s\n", source->scriptstack->filename, source->scriptstack->line, text);
#endif //BSPC
} //end of the function SourceError
//===========================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//===========================================================================
void QDECL SourceWarning(source_t *source, char *str, ...)
{
char text[1024];
va_list ap;
va_start(ap, str);
Q_vsnprintf(text, sizeof(text), str, ap);
va_end(ap);
#ifdef BOTLIB
botimport.Print(PRT_WARNING, "file %s, line %d: %s\n", source->scriptstack->filename, source->scriptstack->line, text);
#endif //BOTLIB
#ifdef MEQCC
printf("warning: file %s, line %d: %s\n", source->scriptstack->filename, source->scriptstack->line, text);
#endif //MEQCC
#ifdef BSPC
Log_Print("warning: file %s, line %d: %s\n", source->scriptstack->filename, source->scriptstack->line, text);
#endif //BSPC
} //end of the function ScriptWarning
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
void PC_PushIndent(source_t *source, int type, int skip)
{
indent_t *indent;
indent = (indent_t *) GetMemory(sizeof(indent_t));
indent->type = type;
indent->script = source->scriptstack;
indent->skip = (skip != 0);
source->skip += indent->skip;
indent->next = source->indentstack;
source->indentstack = indent;
} //end of the function PC_PushIndent
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
void PC_PopIndent(source_t *source, int *type, int *skip)
{
indent_t *indent;
*type = 0;
*skip = 0;
indent = source->indentstack;
if (!indent) return;
//must be an indent from the current script
if (source->indentstack->script != source->scriptstack) return;
*type = indent->type;
*skip = indent->skip;
source->indentstack = source->indentstack->next;
source->skip -= indent->skip;
FreeMemory(indent);
} //end of the function PC_PopIndent
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
void PC_PushScript(source_t *source, script_t *script)
{
script_t *s;
for (s = source->scriptstack; s; s = s->next)
{
if (!Q_stricmp(s->filename, script->filename))
{
SourceError(source, "%s recursively included", script->filename);
return;
} //end if
} //end for
//push the script on the script stack
script->next = source->scriptstack;
source->scriptstack = script;
} //end of the function PC_PushScript
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
void PC_InitTokenHeap(void)
{
/*
int i;
if (tokenheapinitialized) return;
freetokens = NULL;
for (i = 0; i < TOKEN_HEAP_SIZE; i++)
{
token_heap[i].next = freetokens;
freetokens = &token_heap[i];
} //end for
tokenheapinitialized = qtrue;
*/
} //end of the function PC_InitTokenHeap
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
token_t *PC_CopyToken(token_t *token)
{
token_t *t;
// t = (token_t *) malloc(sizeof(token_t));
t = (token_t *) GetMemory(sizeof(token_t));
// t = freetokens;
if (!t)
{
#ifdef BSPC
Error("out of token space");
#else
Com_Error(ERR_FATAL, "out of token space");
#endif
return NULL;
} //end if
// freetokens = freetokens->next;
Com_Memcpy(t, token, sizeof(token_t));
t->next = NULL;
numtokens++;
return t;
} //end of the function PC_CopyToken
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
void PC_FreeToken(token_t *token)
{
//free(token);
FreeMemory(token);
// token->next = freetokens;
// freetokens = token;
numtokens--;
} //end of the function PC_FreeToken
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
int PC_ReadSourceToken(source_t *source, token_t *token)
{
token_t *t;
script_t *script;
int type, skip;
//if there's no token already available
while(!source->tokens)
{
//if there's a token to read from the script
if (PS_ReadToken(source->scriptstack, token)) return qtrue;
//if at the end of the script
if (EndOfScript(source->scriptstack))
{
//remove all indents of the script
while(source->indentstack &&
source->indentstack->script == source->scriptstack)
{
SourceWarning(source, "missing #endif");
PC_PopIndent(source, &type, &skip);
} //end if
} //end if
//if this was the initial script
if (!source->scriptstack->next) return qfalse;
//remove the script and return to the last one
script = source->scriptstack;
source->scriptstack = source->scriptstack->next;
FreeScript(script);
} //end while
//copy the already available token
Com_Memcpy(token, source->tokens, sizeof(token_t));
//free the read token
t = source->tokens;
source->tokens = source->tokens->next;
PC_FreeToken(t);
return qtrue;
} //end of the function PC_ReadSourceToken
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
int PC_UnreadSourceToken(source_t *source, token_t *token)
{
token_t *t;
t = PC_CopyToken(token);
t->next = source->tokens;
source->tokens = t;
return qtrue;
} //end of the function PC_UnreadSourceToken
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
int PC_ReadDefineParms(source_t *source, define_t *define, token_t **parms, int maxparms)
{
token_t token, *t, *last;
int i, done, lastcomma, numparms, indent;
if (!PC_ReadSourceToken(source, &token))
{
SourceError(source, "define %s missing parms", define->name);
return qfalse;
} //end if
//
if (define->numparms > maxparms)
{
SourceError(source, "define with more than %d parameters", maxparms);
return qfalse;
} //end if
//
for (i = 0; i < define->numparms; i++) parms[i] = NULL;
//if no leading "("
if (strcmp(token.string, "("))
{
PC_UnreadSourceToken(source, &token);
SourceError(source, "define %s missing parms", define->name);
return qfalse;
} //end if
//read the define parameters
for (done = 0, numparms = 0, indent = 0; !done;)
{
if (numparms >= maxparms)
{
SourceError(source, "define %s with too many parms", define->name);
return qfalse;
} //end if
if (numparms >= define->numparms)
{
SourceWarning(source, "define %s has too many parms", define->name);
return qfalse;
} //end if
parms[numparms] = NULL;
lastcomma = 1;
last = NULL;
while(!done)
{
//
if (!PC_ReadSourceToken(source, &token))
{
SourceError(source, "define %s incomplete", define->name);
return qfalse;
} //end if
//
if (!strcmp(token.string, ","))
{
if (indent <= 0)
{
if (lastcomma) SourceWarning(source, "too many comma's");
break;
} //end if
} //end if
lastcomma = 0;
//
if (!strcmp(token.string, "("))
{
indent++;
continue;
} //end if
else if (!strcmp(token.string, ")"))
{
if (--indent <= 0)
{
if (!parms[define->numparms-1])
{
SourceWarning(source, "too few define parms");
} //end if
done = 1;
break;
} //end if
} //end if
//
if (numparms < define->numparms)
{
//
t = PC_CopyToken(&token);
t->next = NULL;
if (last) last->next = t;
else parms[numparms] = t;
last = t;
} //end if
} //end while
numparms++;
} //end for
return qtrue;
} //end of the function PC_ReadDefineParms
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
int PC_StringizeTokens(token_t *tokens, token_t *token)
{
token_t *t;
token->type = TT_STRING;
token->whitespace_p = NULL;
token->endwhitespace_p = NULL;
token->string[0] = '\0';
strcat(token->string, "\"");
for (t = tokens; t; t = t->next)
{
strncat(token->string, t->string, MAX_TOKEN - strlen(token->string) - 1);
} //end for
strncat(token->string, "\"", MAX_TOKEN - strlen(token->string) - 1);
return qtrue;
} //end of the function PC_StringizeTokens
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
int PC_MergeTokens(token_t *t1, token_t *t2)
{
//merging of a name with a name or number
if (t1->type == TT_NAME && (t2->type == TT_NAME || t2->type == TT_NUMBER))
{
strcat(t1->string, t2->string);
return qtrue;
} //end if
//merging of two strings
if (t1->type == TT_STRING && t2->type == TT_STRING)
{
//remove trailing double quote
t1->string[strlen(t1->string)-1] = '\0';
//concat without leading double quote
strcat(t1->string, &t2->string[1]);
return qtrue;
} //end if
//FIXME: merging of two number of the same sub type
return qfalse;
} //end of the function PC_MergeTokens
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
/*
void PC_PrintDefine(define_t *define)
{
printf("define->name = %s\n", define->name);
printf("define->flags = %d\n", define->flags);
printf("define->builtin = %d\n", define->builtin);
printf("define->numparms = %d\n", define->numparms);
// token_t *parms; //define parameters
// token_t *tokens; //macro tokens (possibly containing parm tokens)
// struct define_s *next; //next defined macro in a list
} //end of the function PC_PrintDefine*/
#if DEFINEHASHING
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
void PC_PrintDefineHashTable(define_t **definehash)
{
int i;
define_t *d;
for (i = 0; i < DEFINEHASHSIZE; i++)
{
Log_Write("%4d:", i);
for (d = definehash[i]; d; d = d->hashnext)
{
Log_Write(" %s", d->name);
} //end for
Log_Write("\n");
} //end for
} //end of the function PC_PrintDefineHashTable
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
//char primes[16] = {1, 3, 5, 7, 11, 13, 17, 19, 23, 27, 29, 31, 37, 41, 43, 47};
int PC_NameHash(char *name)
{
int register hash, i;
hash = 0;
for (i = 0; name[i] != '\0'; i++)
{
hash += name[i] * (119 + i);
//hash += (name[i] << 7) + i;
//hash += (name[i] << (i&15));
} //end while
hash = (hash ^ (hash >> 10) ^ (hash >> 20)) & (DEFINEHASHSIZE-1);
return hash;
} //end of the function PC_NameHash
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
void PC_AddDefineToHash(define_t *define, define_t **definehash)
{
int hash;
hash = PC_NameHash(define->name);
define->hashnext = definehash[hash];
definehash[hash] = define;
} //end of the function PC_AddDefineToHash
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
define_t *PC_FindHashedDefine(define_t **definehash, char *name)
{
define_t *d;
int hash;
hash = PC_NameHash(name);
for (d = definehash[hash]; d; d = d->hashnext)
{
if (!strcmp(d->name, name)) return d;
} //end for
return NULL;
} //end of the function PC_FindHashedDefine
#endif //DEFINEHASHING
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
define_t *PC_FindDefine(define_t *defines, char *name)
{
define_t *d;
for (d = defines; d; d = d->next)
{
if (!strcmp(d->name, name)) return d;
} //end for
return NULL;
} //end of the function PC_FindDefine
//============================================================================
//
// Parameter: -
// Returns: number of the parm
// if no parm found with the given name -1 is returned
// Changes Globals: -
//============================================================================
int PC_FindDefineParm(define_t *define, char *name)
{
token_t *p;
int i;
i = 0;
for (p = define->parms; p; p = p->next)
{
if (!strcmp(p->string, name)) return i;
i++;
} //end for
return -1;
} //end of the function PC_FindDefineParm
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
void PC_FreeDefine(define_t *define)
{
token_t *t, *next;
//free the define parameters
for (t = define->parms; t; t = next)
{
next = t->next;
PC_FreeToken(t);
} //end for
//free the define tokens
for (t = define->tokens; t; t = next)
{
next = t->next;
PC_FreeToken(t);
} //end for
//free the define
FreeMemory(define->name);
FreeMemory(define);
} //end of the function PC_FreeDefine
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
void PC_AddBuiltinDefines(source_t *source)
{
int i;
define_t *define;
struct builtin
{
char *string;
int builtin;
} builtin[] = {
{ "__LINE__", BUILTIN_LINE },
{ "__FILE__", BUILTIN_FILE },
{ "__DATE__", BUILTIN_DATE },
{ "__TIME__", BUILTIN_TIME },
// { "__STDC__", BUILTIN_STDC },
{ NULL, 0 }
};
for (i = 0; builtin[i].string; i++)
{
define = (define_t *) GetMemory(sizeof(define_t));
Com_Memset(define, 0, sizeof(define_t));
define->name = (char *) GetMemory(strlen(builtin[i].string) + 1);
strcpy(define->name, builtin[i].string);
define->flags |= DEFINE_FIXED;
define->builtin = builtin[i].builtin;
//add the define to the source
#if DEFINEHASHING
PC_AddDefineToHash(define, source->definehash);
#else
define->next = source->defines;
source->defines = define;
#endif //DEFINEHASHING
} //end for
} //end of the function PC_AddBuiltinDefines
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
int PC_ExpandBuiltinDefine(source_t *source, token_t *deftoken, define_t *define,
token_t **firsttoken, token_t **lasttoken)
{
token_t *token;
time_t t;
char *curtime;
token = PC_CopyToken(deftoken);
switch(define->builtin)
{
case BUILTIN_LINE:
{
sprintf(token->string, "%d", deftoken->line);
#ifdef NUMBERVALUE
token->intvalue = deftoken->line;
token->floatvalue = deftoken->line;
#endif //NUMBERVALUE
token->type = TT_NUMBER;
token->subtype = TT_DECIMAL | TT_INTEGER;
*firsttoken = token;
*lasttoken = token;
break;
} //end case
case BUILTIN_FILE:
{
strcpy(token->string, source->scriptstack->filename);
token->type = TT_NAME;
token->subtype = strlen(token->string);
*firsttoken = token;
*lasttoken = token;
break;
} //end case
case BUILTIN_DATE:
{
t = time(NULL);
curtime = ctime(&t);
strcpy(token->string, "\"");
strncat(token->string, curtime+4, 7);
strncat(token->string+7, curtime+20, 4);
strcat(token->string, "\"");
free(curtime);
token->type = TT_NAME;
token->subtype = strlen(token->string);
*firsttoken = token;
*lasttoken = token;
break;
} //end case
case BUILTIN_TIME:
{
t = time(NULL);
curtime = ctime(&t);
strcpy(token->string, "\"");
strncat(token->string, curtime+11, 8);
strcat(token->string, "\"");
free(curtime);
token->type = TT_NAME;
token->subtype = strlen(token->string);
*firsttoken = token;
*lasttoken = token;
break;
} //end case
case BUILTIN_STDC:
default:
{
*firsttoken = NULL;
*lasttoken = NULL;
break;
} //end case
} //end switch
return qtrue;
} //end of the function PC_ExpandBuiltinDefine
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
int PC_ExpandDefine(source_t *source, token_t *deftoken, define_t *define,
token_t **firsttoken, token_t **lasttoken)
{
token_t *parms[MAX_DEFINEPARMS] = { NULL }, *dt, *pt, *t;
token_t *t1, *t2, *first, *last, *nextpt, token;
int parmnum, i;
//if it is a builtin define
if (define->builtin)
{
return PC_ExpandBuiltinDefine(source, deftoken, define, firsttoken, lasttoken);
} //end if
//if the define has parameters
if (define->numparms)
{
if (!PC_ReadDefineParms(source, define, parms, MAX_DEFINEPARMS)) return qfalse;
#ifdef DEBUG_EVAL
for (i = 0; i < define->numparms; i++)
{
Log_Write("define parms %d:", i);
for (pt = parms[i]; pt; pt = pt->next)
{
Log_Write("%s", pt->string);
} //end for
} //end for
#endif //DEBUG_EVAL
} //end if
//empty list at first
first = NULL;
last = NULL;
//create a list with tokens of the expanded define
for (dt = define->tokens; dt; dt = dt->next)
{
parmnum = -1;
//if the token is a name, it could be a define parameter
if (dt->type == TT_NAME)
{
parmnum = PC_FindDefineParm(define, dt->string);
} //end if
//if it is a define parameter
if (parmnum >= 0)
{
for (pt = parms[parmnum]; pt; pt = pt->next)
{
t = PC_CopyToken(pt);
//add the token to the list
t->next = NULL;
if (last) last->next = t;
else first = t;
last = t;
} //end for
} //end if
else
{
//if stringizing operator
if (dt->string[0] == '#' && dt->string[1] == '\0')
{
//the stringizing operator must be followed by a define parameter
if (dt->next) parmnum = PC_FindDefineParm(define, dt->next->string);
else parmnum = -1;
//
if (parmnum >= 0)
{
//step over the stringizing operator
dt = dt->next;
//stringize the define parameter tokens
if (!PC_StringizeTokens(parms[parmnum], &token))
{
SourceError(source, "can't stringize tokens");
return qfalse;
} //end if
t = PC_CopyToken(&token);
} //end if
else
{
SourceWarning(source, "stringizing operator without define parameter");
continue;
} //end if
} //end if
else
{
t = PC_CopyToken(dt);
} //end else
//add the token to the list
t->next = NULL;
if (last) last->next = t;
else first = t;
last = t;
} //end else
} //end for
//check for the merging operator
for (t = first; t; )
{
if (t->next)
{
//if the merging operator
if (t->next->string[0] == '#' && t->next->string[1] == '#')
{
t1 = t;
t2 = t->next->next;
if (t2)
{
if (!PC_MergeTokens(t1, t2))
{
SourceError(source, "can't merge %s with %s", t1->string, t2->string);
return qfalse;
} //end if
PC_FreeToken(t1->next);
t1->next = t2->next;
if (t2 == last) last = t1;
PC_FreeToken(t2);
continue;
} //end if
} //end if
} //end if
t = t->next;
} //end for
//store the first and last token of the list
*firsttoken = first;
*lasttoken = last;
//free all the parameter tokens
for (i = 0; i < define->numparms; i++)
{
for (pt = parms[i]; pt; pt = nextpt)
{
nextpt = pt->next;
PC_FreeToken(pt);
} //end for
} //end for
//
return qtrue;
} //end of the function PC_ExpandDefine
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
int PC_ExpandDefineIntoSource(source_t *source, token_t *deftoken, define_t *define)
{
token_t *firsttoken, *lasttoken;
if (!PC_ExpandDefine(source, deftoken, define, &firsttoken, &lasttoken)) return qfalse;
if (firsttoken && lasttoken)
{
lasttoken->next = source->tokens;
source->tokens = firsttoken;
return qtrue;
} //end if
return qfalse;
} //end of the function PC_ExpandDefineIntoSource
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
void PC_ConvertPath(char *path)
{
char *ptr;
//remove double path seperators
for (ptr = path; *ptr;)
{
if ((*ptr == '\\' || *ptr == '/') &&
(*(ptr+1) == '\\' || *(ptr+1) == '/'))
{
memmove(ptr, ptr+1, strlen(ptr));
} //end if
else
{
ptr++;
} //end else
} //end while
//set OS dependent path seperators
for (ptr = path; *ptr;)
{
if (*ptr == '/' || *ptr == '\\') *ptr = PATHSEPERATOR_CHAR;
ptr++;
} //end while
} //end of the function PC_ConvertPath
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
int PC_Directive_include(source_t *source)
{
script_t *script;
token_t token;
char path[MAX_PATH];
#ifdef QUAKE
foundfile_t file;
#endif //QUAKE
if (source->skip > 0) return qtrue;
//
if (!PC_ReadSourceToken(source, &token))
{
SourceError(source, "#include without file name");
return qfalse;
} //end if
if (token.linescrossed > 0)
{
SourceError(source, "#include without file name");
return qfalse;
} //end if
if (token.type == TT_STRING)
{
StripDoubleQuotes(token.string);
PC_ConvertPath(token.string);
script = LoadScriptFile(token.string);
if (!script)
{
Q_strncpyz(path, source->includepath, sizeof(path));
Q_strcat(path, sizeof(path), token.string);
script = LoadScriptFile(path);
} //end if
} //end if
else if (token.type == TT_PUNCTUATION && *token.string == '<')
{
Q_strncpyz(path, source->includepath, sizeof(path));
while(PC_ReadSourceToken(source, &token))
{
if (token.linescrossed > 0)
{
PC_UnreadSourceToken(source, &token);
break;
} //end if
if (token.type == TT_PUNCTUATION && *token.string == '>') break;
Q_strcat(path, sizeof(path), token.string);
} //end while
if (*token.string != '>')
{
SourceWarning(source, "#include missing trailing >");
} //end if
if (!strlen(path))
{
SourceError(source, "#include without file name between < >");
return qfalse;
} //end if
PC_ConvertPath(path);
script = LoadScriptFile(path);
} //end if
else
{
SourceError(source, "#include without file name");
return qfalse;
} //end else
#ifdef QUAKE
if (!script)
{
Com_Memset(&file, 0, sizeof(foundfile_t));
script = LoadScriptFile(path);
if (script) strncpy(script->filename, path, MAX_PATH);
} //end if
#endif //QUAKE
if (!script)
{
#ifdef SCREWUP
SourceWarning(source, "file %s not found", path);
return qtrue;
#else
SourceError(source, "file %s not found", path);
return qfalse;
#endif //SCREWUP
} //end if
PC_PushScript(source, script);
return qtrue;
} //end of the function PC_Directive_include
//============================================================================
// reads a token from the current line, continues reading on the next
// line only if a backslash '\' is encountered.
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
int PC_ReadLine(source_t *source, token_t *token)
{
int crossline;
crossline = 0;
do
{
if (!PC_ReadSourceToken(source, token)) return qfalse;
if (token->linescrossed > crossline)
{
PC_UnreadSourceToken(source, token);
return qfalse;
} //end if
crossline = 1;
} while(!strcmp(token->string, "\\"));
return qtrue;
} //end of the function PC_ReadLine
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
int PC_WhiteSpaceBeforeToken(token_t *token)
{
return token->endwhitespace_p - token->whitespace_p > 0;
} //end of the function PC_WhiteSpaceBeforeToken
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
void PC_ClearTokenWhiteSpace(token_t *token)
{
token->whitespace_p = NULL;
token->endwhitespace_p = NULL;
token->linescrossed = 0;
} //end of the function PC_ClearTokenWhiteSpace
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
int PC_Directive_undef(source_t *source)
{
token_t token;
define_t *define, *lastdefine;
int hash;
if (source->skip > 0) return qtrue;
//
if (!PC_ReadLine(source, &token))
{
SourceError(source, "undef without name");
return qfalse;
} //end if
if (token.type != TT_NAME)
{
PC_UnreadSourceToken(source, &token);
SourceError(source, "expected name, found %s", token.string);
return qfalse;
} //end if
#if DEFINEHASHING
hash = PC_NameHash(token.string);
for (lastdefine = NULL, define = source->definehash[hash]; define; define = define->hashnext)
{
if (!strcmp(define->name, token.string))
{
if (define->flags & DEFINE_FIXED)
{
SourceWarning(source, "can't undef %s", token.string);
} //end if
else
{
if (lastdefine) lastdefine->hashnext = define->hashnext;
else source->definehash[hash] = define->hashnext;
PC_FreeDefine(define);
} //end else
break;
} //end if
lastdefine = define;
} //end for
#else //DEFINEHASHING
for (lastdefine = NULL, define = source->defines; define; define = define->next)
{
if (!strcmp(define->name, token.string))
{
if (define->flags & DEFINE_FIXED)
{
SourceWarning(source, "can't undef %s", token.string);
} //end if
else
{
if (lastdefine) lastdefine->next = define->next;
else source->defines = define->next;
PC_FreeDefine(define);
} //end else
break;
} //end if
lastdefine = define;
} //end for
#endif //DEFINEHASHING
return qtrue;
} //end of the function PC_Directive_undef
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
int PC_Directive_define(source_t *source)
{
token_t token, *t, *last;
define_t *define;
if (source->skip > 0) return qtrue;
//
if (!PC_ReadLine(source, &token))
{
SourceError(source, "#define without name");
return qfalse;
} //end if
if (token.type != TT_NAME)
{
PC_UnreadSourceToken(source, &token);
SourceError(source, "expected name after #define, found %s", token.string);
return qfalse;
} //end if
//check if the define already exists
#if DEFINEHASHING
define = PC_FindHashedDefine(source->definehash, token.string);
#else
define = PC_FindDefine(source->defines, token.string);
#endif //DEFINEHASHING
if (define)
{
if (define->flags & DEFINE_FIXED)
{
SourceError(source, "can't redefine %s", token.string);
return qfalse;
} //end if
SourceWarning(source, "redefinition of %s", token.string);
//unread the define name before executing the #undef directive
PC_UnreadSourceToken(source, &token);
if (!PC_Directive_undef(source)) return qfalse;
} //end if
//allocate define
define = (define_t *) GetMemory(sizeof(define_t));
Com_Memset(define, 0, sizeof(define_t));
define->name = (char *) GetMemory(strlen(token.string) + 1);
strcpy(define->name, token.string);
//add the define to the source
#if DEFINEHASHING
PC_AddDefineToHash(define, source->definehash);
#else //DEFINEHASHING
define->next = source->defines;
source->defines = define;
#endif //DEFINEHASHING
//if nothing is defined, just return
if (!PC_ReadLine(source, &token)) return qtrue;
//if it is a define with parameters
if (!PC_WhiteSpaceBeforeToken(&token) && !strcmp(token.string, "("))
{
//read the define parameters
last = NULL;
if (!PC_CheckTokenString(source, ")"))
{
while(1)
{
if (!PC_ReadLine(source, &token))
{
SourceError(source, "expected define parameter");
return qfalse;
} //end if
//if it isn't a name
if (token.type != TT_NAME)
{
SourceError(source, "invalid define parameter");
return qfalse;
} //end if
//
if (PC_FindDefineParm(define, token.string) >= 0)
{
SourceError(source, "two the same define parameters");
return qfalse;
} //end if
//add the define parm
t = PC_CopyToken(&token);
PC_ClearTokenWhiteSpace(t);
t->next = NULL;
if (last) last->next = t;
else define->parms = t;
last = t;
define->numparms++;
//read next token
if (!PC_ReadLine(source, &token))
{
SourceError(source, "define parameters not terminated");
return qfalse;
} //end if
//
if (!strcmp(token.string, ")")) break;
//then it must be a comma
if (strcmp(token.string, ","))
{
SourceError(source, "define not terminated");
return qfalse;
} //end if
} //end while
} //end if
if (!PC_ReadLine(source, &token)) return qtrue;
} //end if
//read the defined stuff
last = NULL;
do
{
t = PC_CopyToken(&token);
if (t->type == TT_NAME && !strcmp(t->string, define->name))
{
SourceError(source, "recursive define (removed recursion)");
continue;
} //end if
PC_ClearTokenWhiteSpace(t);
t->next = NULL;
if (last) last->next = t;
else define->tokens = t;
last = t;
} while(PC_ReadLine(source, &token));
//
if (last)
{
//check for merge operators at the beginning or end
if (!strcmp(define->tokens->string, "##") ||
!strcmp(last->string, "##"))
{
SourceError(source, "define with misplaced ##");
return qfalse;
} //end if
} //end if
return qtrue;
} //end of the function PC_Directive_define
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
define_t *PC_DefineFromString(char *string)
{
script_t *script;
source_t src;
token_t *t;
int res, i;
define_t *def;
PC_InitTokenHeap();
script = LoadScriptMemory(string, strlen(string), "*extern");
//create a new source
Com_Memset(&src, 0, sizeof(source_t));
strncpy(src.filename, "*extern", MAX_PATH);
src.scriptstack = script;
#if DEFINEHASHING
src.definehash = GetClearedMemory(DEFINEHASHSIZE * sizeof(define_t *));
#endif //DEFINEHASHING
//create a define from the source
res = PC_Directive_define(&src);
//free any tokens if left
for (t = src.tokens; t; t = src.tokens)
{
src.tokens = src.tokens->next;
PC_FreeToken(t);
} //end for
#ifdef DEFINEHASHING
def = NULL;
for (i = 0; i < DEFINEHASHSIZE; i++)
{
if (src.definehash[i])
{
def = src.definehash[i];
break;
} //end if
} //end for
#else
def = src.defines;
#endif //DEFINEHASHING
//
#if DEFINEHASHING
FreeMemory(src.definehash);
#endif //DEFINEHASHING
//
FreeScript(script);
//if the define was created successfully
if (res > 0) return def;
//free the define is created
if (src.defines) PC_FreeDefine(def);
//
return NULL;
} //end of the function PC_DefineFromString
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
int PC_AddDefine(source_t *source, char *string)
{
define_t *define;
define = PC_DefineFromString(string);
if (!define) return qfalse;
#if DEFINEHASHING
PC_AddDefineToHash(define, source->definehash);
#else //DEFINEHASHING
define->next = source->defines;
source->defines = define;
#endif //DEFINEHASHING
return qtrue;
} //end of the function PC_AddDefine
//============================================================================
// add a globals define that will be added to all opened sources
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
int PC_AddGlobalDefine(char *string)
{
define_t *define;
define = PC_DefineFromString(string);
if (!define) return qfalse;
define->next = globaldefines;
globaldefines = define;
return qtrue;
} //end of the function PC_AddGlobalDefine
//============================================================================
// remove the given global define
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
int PC_RemoveGlobalDefine(char *name)
{
define_t *define;
define = PC_FindDefine(globaldefines, name);
if (define)
{
PC_FreeDefine(define);
return qtrue;
} //end if
return qfalse;
} //end of the function PC_RemoveGlobalDefine
//============================================================================
// remove all globals defines
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
void PC_RemoveAllGlobalDefines(void)
{
define_t *define;
for (define = globaldefines; define; define = globaldefines)
{
globaldefines = globaldefines->next;
PC_FreeDefine(define);
} //end for
} //end of the function PC_RemoveAllGlobalDefines
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
define_t *PC_CopyDefine(source_t *source, define_t *define)
{
define_t *newdefine;
token_t *token, *newtoken, *lasttoken;
newdefine = (define_t *) GetMemory(sizeof(define_t));
//copy the define name
newdefine->name = (char *) GetMemory(strlen(define->name) + 1);
strcpy(newdefine->name, define->name);
newdefine->flags = define->flags;
newdefine->builtin = define->builtin;
newdefine->numparms = define->numparms;
//the define is not linked
newdefine->next = NULL;
newdefine->hashnext = NULL;
//copy the define tokens
newdefine->tokens = NULL;
for (lasttoken = NULL, token = define->tokens; token; token = token->next)
{
newtoken = PC_CopyToken(token);
newtoken->next = NULL;
if (lasttoken) lasttoken->next = newtoken;
else newdefine->tokens = newtoken;
lasttoken = newtoken;
} //end for
//copy the define parameters
newdefine->parms = NULL;
for (lasttoken = NULL, token = define->parms; token; token = token->next)
{
newtoken = PC_CopyToken(token);
newtoken->next = NULL;
if (lasttoken) lasttoken->next = newtoken;
else newdefine->parms = newtoken;
lasttoken = newtoken;
} //end for
return newdefine;
} //end of the function PC_CopyDefine
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
void PC_AddGlobalDefinesToSource(source_t *source)
{
define_t *define, *newdefine;
for (define = globaldefines; define; define = define->next)
{
newdefine = PC_CopyDefine(source, define);
#if DEFINEHASHING
PC_AddDefineToHash(newdefine, source->definehash);
#else //DEFINEHASHING
newdefine->next = source->defines;
source->defines = newdefine;
#endif //DEFINEHASHING
} //end for
} //end of the function PC_AddGlobalDefinesToSource
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
int PC_Directive_if_def(source_t *source, int type)
{
token_t token;
define_t *d;
int skip;
if (!PC_ReadLine(source, &token))
{
SourceError(source, "#ifdef without name");
return qfalse;
} //end if
if (token.type != TT_NAME)
{
PC_UnreadSourceToken(source, &token);
SourceError(source, "expected name after #ifdef, found %s", token.string);
return qfalse;
} //end if
#if DEFINEHASHING
d = PC_FindHashedDefine(source->definehash, token.string);
#else
d = PC_FindDefine(source->defines, token.string);
#endif //DEFINEHASHING
skip = (type == INDENT_IFDEF) == (d == NULL);
PC_PushIndent(source, type, skip);
return qtrue;
} //end of the function PC_Directiveif_def
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
int PC_Directive_ifdef(source_t *source)
{
return PC_Directive_if_def(source, INDENT_IFDEF);
} //end of the function PC_Directive_ifdef
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
int PC_Directive_ifndef(source_t *source)
{
return PC_Directive_if_def(source, INDENT_IFNDEF);
} //end of the function PC_Directive_ifndef
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
int PC_Directive_else(source_t *source)
{
int type, skip;
PC_PopIndent(source, &type, &skip);
if (!type)
{
SourceError(source, "misplaced #else");
return qfalse;
} //end if
if (type == INDENT_ELSE)
{
SourceError(source, "#else after #else");
return qfalse;
} //end if
PC_PushIndent(source, INDENT_ELSE, !skip);
return qtrue;
} //end of the function PC_Directive_else
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
int PC_Directive_endif(source_t *source)
{
int type, skip;
PC_PopIndent(source, &type, &skip);
if (!type)
{
SourceError(source, "misplaced #endif");
return qfalse;
} //end if
return qtrue;
} //end of the function PC_Directive_endif
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
typedef struct operator_s
{
int operator;
int priority;
int parentheses;
struct operator_s *prev, *next;
} operator_t;
typedef struct value_s
{
signed long int intvalue;
float floatvalue;
int parentheses;
struct value_s *prev, *next;
} value_t;
int PC_OperatorPriority(int op)
{
switch(op)
{
case P_MUL: return 15;
case P_DIV: return 15;
case P_MOD: return 15;
case P_ADD: return 14;
case P_SUB: return 14;
case P_LOGIC_AND: return 7;
case P_LOGIC_OR: return 6;
case P_LOGIC_GEQ: return 12;
case P_LOGIC_LEQ: return 12;
case P_LOGIC_EQ: return 11;
case P_LOGIC_UNEQ: return 11;
case P_LOGIC_NOT: return 16;
case P_LOGIC_GREATER: return 12;
case P_LOGIC_LESS: return 12;
case P_RSHIFT: return 13;
case P_LSHIFT: return 13;
case P_BIN_AND: return 10;
case P_BIN_OR: return 8;
case P_BIN_XOR: return 9;
case P_BIN_NOT: return 16;
case P_COLON: return 5;
case P_QUESTIONMARK: return 5;
} //end switch
return qfalse;
} //end of the function PC_OperatorPriority
//#define AllocValue() GetClearedMemory(sizeof(value_t));
//#define FreeValue(val) FreeMemory(val)
//#define AllocOperator(op) op = (operator_t *) GetClearedMemory(sizeof(operator_t));
//#define FreeOperator(op) FreeMemory(op);
#define MAX_VALUES 64
#define MAX_OPERATORS 64
#define AllocValue(val) \
if (numvalues >= MAX_VALUES) { \
SourceError(source, "out of value space"); \
error = 1; \
break; \
} \
else \
val = &value_heap[numvalues++];
#define FreeValue(val)
//
#define AllocOperator(op) \
if (numoperators >= MAX_OPERATORS) { \
SourceError(source, "out of operator space"); \
error = 1; \
break; \
} \
else \
op = &operator_heap[numoperators++];
#define FreeOperator(op)
int PC_EvaluateTokens(source_t *source, token_t *tokens, signed long int *intvalue,
float *floatvalue, int integer)
{
operator_t *o, *firstoperator, *lastoperator;
value_t *v, *firstvalue, *lastvalue, *v1, *v2;
token_t *t;
int brace = 0;
int parentheses = 0;
int error = 0;
int lastwasvalue = 0;
int negativevalue = 0;
int questmarkintvalue = 0;
float questmarkfloatvalue = 0;
int gotquestmarkvalue = qfalse;
//
operator_t operator_heap[MAX_OPERATORS];
int numoperators = 0;
value_t value_heap[MAX_VALUES];
int numvalues = 0;
firstoperator = lastoperator = NULL;
firstvalue = lastvalue = NULL;
if (intvalue) *intvalue = 0;
if (floatvalue) *floatvalue = 0;
for (t = tokens; t; t = t->next)
{
switch(t->type)
{
case TT_NAME:
{
if (lastwasvalue || negativevalue)
{
SourceError(source, "syntax error in #if/#elif");
error = 1;
break;
} //end if
if (strcmp(t->string, "defined"))
{
SourceError(source, "undefined name %s in #if/#elif", t->string);
error = 1;
break;
} //end if
t = t->next;
if (!strcmp(t->string, "("))
{
brace = qtrue;
t = t->next;
} //end if
if (!t || t->type != TT_NAME)
{
SourceError(source, "defined without name in #if/#elif");
error = 1;
break;
} //end if
//v = (value_t *) GetClearedMemory(sizeof(value_t));
AllocValue(v);
#if DEFINEHASHING
if (PC_FindHashedDefine(source->definehash, t->string))
#else
if (PC_FindDefine(source->defines, t->string))
#endif //DEFINEHASHING
{
v->intvalue = 1;
v->floatvalue = 1;
} //end if
else
{
v->intvalue = 0;
v->floatvalue = 0;
} //end else
v->parentheses = parentheses;
v->next = NULL;
v->prev = lastvalue;
if (lastvalue) lastvalue->next = v;
else firstvalue = v;
lastvalue = v;
if (brace)
{
t = t->next;
if (!t || strcmp(t->string, ")"))
{
SourceError(source, "defined without ) in #if/#elif");
error = 1;
break;
} //end if
} //end if
brace = qfalse;
// defined() creates a value
lastwasvalue = 1;
break;
} //end case
case TT_NUMBER:
{
if (lastwasvalue)
{
SourceError(source, "syntax error in #if/#elif");
error = 1;
break;
} //end if
//v = (value_t *) GetClearedMemory(sizeof(value_t));
AllocValue(v);
if (negativevalue)
{
v->intvalue = - (signed int) t->intvalue;
v->floatvalue = - t->floatvalue;
} //end if
else
{
v->intvalue = t->intvalue;
v->floatvalue = t->floatvalue;
} //end else
v->parentheses = parentheses;
v->next = NULL;
v->prev = lastvalue;
if (lastvalue) lastvalue->next = v;
else firstvalue = v;
lastvalue = v;
//last token was a value
lastwasvalue = 1;
//
negativevalue = 0;
break;
} //end case
case TT_PUNCTUATION:
{
if (negativevalue)
{
SourceError(source, "misplaced minus sign in #if/#elif");
error = 1;
break;
} //end if
if (t->subtype == P_PARENTHESESOPEN)
{
parentheses++;
break;
} //end if
else if (t->subtype == P_PARENTHESESCLOSE)
{
parentheses--;
if (parentheses < 0)
{
SourceError(source, "too many ) in #if/#elsif");
error = 1;
} //end if
break;
} //end else if
//check for invalid operators on floating point values
if (!integer)
{
if (t->subtype == P_BIN_NOT || t->subtype == P_MOD ||
t->subtype == P_RSHIFT || t->subtype == P_LSHIFT ||
t->subtype == P_BIN_AND || t->subtype == P_BIN_OR ||
t->subtype == P_BIN_XOR)
{
SourceError(source, "illigal operator %s on floating point operands", t->string);
error = 1;
break;
} //end if
} //end if
switch(t->subtype)
{
case P_LOGIC_NOT:
case P_BIN_NOT:
{
if (lastwasvalue)
{
SourceError(source, "! or ~ after value in #if/#elif");
error = 1;
break;
} //end if
break;
} //end case
case P_INC:
case P_DEC:
{
SourceError(source, "++ or -- used in #if/#elif");
break;
} //end case
case P_SUB:
{
if (!lastwasvalue)
{
negativevalue = 1;
break;
} //end if
} //end case
case P_MUL:
case P_DIV:
case P_MOD:
case P_ADD:
case P_LOGIC_AND:
case P_LOGIC_OR:
case P_LOGIC_GEQ:
case P_LOGIC_LEQ:
case P_LOGIC_EQ:
case P_LOGIC_UNEQ:
case P_LOGIC_GREATER:
case P_LOGIC_LESS:
case P_RSHIFT:
case P_LSHIFT:
case P_BIN_AND:
case P_BIN_OR:
case P_BIN_XOR:
case P_COLON:
case P_QUESTIONMARK:
{
if (!lastwasvalue)
{
SourceError(source, "operator %s after operator in #if/#elif", t->string);
error = 1;
break;
} //end if
break;
} //end case
default:
{
SourceError(source, "invalid operator %s in #if/#elif", t->string);
error = 1;
break;
} //end default
} //end switch
if (!error && !negativevalue)
{
//o = (operator_t *) GetClearedMemory(sizeof(operator_t));
AllocOperator(o);
o->operator = t->subtype;
o->priority = PC_OperatorPriority(t->subtype);
o->parentheses = parentheses;
o->next = NULL;
o->prev = lastoperator;
if (lastoperator) lastoperator->next = o;
else firstoperator = o;
lastoperator = o;
lastwasvalue = 0;
} //end if
break;
} //end case
default:
{
SourceError(source, "unknown %s in #if/#elif", t->string);
error = 1;
break;
} //end default
} //end switch
if (error) break;
} //end for
if (!error)
{
if (!lastwasvalue)
{
SourceError(source, "trailing operator in #if/#elif");
error = 1;
} //end if
else if (parentheses)
{
SourceError(source, "too many ( in #if/#elif");
error = 1;
} //end else if
} //end if
//
gotquestmarkvalue = qfalse;
questmarkintvalue = 0;
questmarkfloatvalue = 0;
//while there are operators
while(!error && firstoperator)
{
v = firstvalue;
for (o = firstoperator; o->next; o = o->next)
{
//if the current operator is nested deeper in parentheses
//than the next operator
if (o->parentheses > o->next->parentheses) break;
//if the current and next operator are nested equally deep in parentheses
if (o->parentheses == o->next->parentheses)
{
//if the priority of the current operator is equal or higher
//than the priority of the next operator
if (o->priority >= o->next->priority) break;
} //end if
//if the arity of the operator isn't equal to 1
if (o->operator != P_LOGIC_NOT
&& o->operator != P_BIN_NOT) v = v->next;
//if there's no value or no next value
if (!v)
{
SourceError(source, "mising values in #if/#elif");
error = 1;
break;
} //end if
} //end for
if (error) break;
v1 = v;
v2 = v->next;
#ifdef DEBUG_EVAL
if (integer)
{
Log_Write("operator %s, value1 = %d", PunctuationFromNum(source->scriptstack, o->operator), v1->intvalue);
if (v2) Log_Write("value2 = %d", v2->intvalue);
} //end if
else
{
Log_Write("operator %s, value1 = %f", PunctuationFromNum(source->scriptstack, o->operator), v1->floatvalue);
if (v2) Log_Write("value2 = %f", v2->floatvalue);
} //end else
#endif //DEBUG_EVAL
switch(o->operator)
{
case P_LOGIC_NOT: v1->intvalue = !v1->intvalue;
v1->floatvalue = !v1->floatvalue; break;
case P_BIN_NOT: v1->intvalue = ~v1->intvalue;
break;
case P_MUL: v1->intvalue *= v2->intvalue;
v1->floatvalue *= v2->floatvalue; break;
case P_DIV: if (!v2->intvalue || !v2->floatvalue)
{
SourceError(source, "divide by zero in #if/#elif");
error = 1;
break;
}
v1->intvalue /= v2->intvalue;
v1->floatvalue /= v2->floatvalue; break;
case P_MOD: if (!v2->intvalue)
{
SourceError(source, "divide by zero in #if/#elif");
error = 1;
break;
}
v1->intvalue %= v2->intvalue; break;
case P_ADD: v1->intvalue += v2->intvalue;
v1->floatvalue += v2->floatvalue; break;
case P_SUB: v1->intvalue -= v2->intvalue;
v1->floatvalue -= v2->floatvalue; break;
case P_LOGIC_AND: v1->intvalue = v1->intvalue && v2->intvalue;
v1->floatvalue = v1->floatvalue && v2->floatvalue; break;
case P_LOGIC_OR: v1->intvalue = v1->intvalue || v2->intvalue;
v1->floatvalue = v1->floatvalue || v2->floatvalue; break;
case P_LOGIC_GEQ: v1->intvalue = v1->intvalue >= v2->intvalue;
v1->floatvalue = v1->floatvalue >= v2->floatvalue; break;
case P_LOGIC_LEQ: v1->intvalue = v1->intvalue <= v2->intvalue;
v1->floatvalue = v1->floatvalue <= v2->floatvalue; break;
case P_LOGIC_EQ: v1->intvalue = v1->intvalue == v2->intvalue;
v1->floatvalue = v1->floatvalue == v2->floatvalue; break;
case P_LOGIC_UNEQ: v1->intvalue = v1->intvalue != v2->intvalue;
v1->floatvalue = v1->floatvalue != v2->floatvalue; break;
case P_LOGIC_GREATER: v1->intvalue = v1->intvalue > v2->intvalue;
v1->floatvalue = v1->floatvalue > v2->floatvalue; break;
case P_LOGIC_LESS: v1->intvalue = v1->intvalue < v2->intvalue;
v1->floatvalue = v1->floatvalue < v2->floatvalue; break;
case P_RSHIFT: v1->intvalue >>= v2->intvalue;
break;
case P_LSHIFT: v1->intvalue <<= v2->intvalue;
break;
case P_BIN_AND: v1->intvalue &= v2->intvalue;
break;
case P_BIN_OR: v1->intvalue |= v2->intvalue;
break;
case P_BIN_XOR: v1->intvalue ^= v2->intvalue;
break;
case P_COLON:
{
if (!gotquestmarkvalue)
{
SourceError(source, ": without ? in #if/#elif");
error = 1;
break;
} //end if
if (integer)
{
if (!questmarkintvalue) v1->intvalue = v2->intvalue;
} //end if
else
{
if (!questmarkfloatvalue) v1->floatvalue = v2->floatvalue;
} //end else
gotquestmarkvalue = qfalse;
break;
} //end case
case P_QUESTIONMARK:
{
if (gotquestmarkvalue)
{
SourceError(source, "? after ? in #if/#elif");
error = 1;
break;
} //end if
questmarkintvalue = v1->intvalue;
questmarkfloatvalue = v1->floatvalue;
gotquestmarkvalue = qtrue;
break;
} //end if
} //end switch
#ifdef DEBUG_EVAL
if (integer) Log_Write("result value = %d", v1->intvalue);
else Log_Write("result value = %f", v1->floatvalue);
#endif //DEBUG_EVAL
if (error) break;
//if not an operator with arity 1
if (o->operator != P_LOGIC_NOT
&& o->operator != P_BIN_NOT)
{
//remove the second value if not question mark operator
if (o->operator != P_QUESTIONMARK) v = v->next;
//
if (v->prev) v->prev->next = v->next;
else firstvalue = v->next;
if (v->next) v->next->prev = v->prev;
//FreeMemory(v);
FreeValue(v);
} //end if
//remove the operator
if (o->prev) o->prev->next = o->next;
else firstoperator = o->next;
if (o->next) o->next->prev = o->prev;
//FreeMemory(o);
FreeOperator(o);
} //end while
if (firstvalue)
{
if (intvalue) *intvalue = firstvalue->intvalue;
if (floatvalue) *floatvalue = firstvalue->floatvalue;
} //end if
for (o = firstoperator; o; o = lastoperator)
{
lastoperator = o->next;
//FreeMemory(o);
FreeOperator(o);
} //end for
for (v = firstvalue; v; v = lastvalue)
{
lastvalue = v->next;
//FreeMemory(v);
FreeValue(v);
} //end for
if (!error) return qtrue;
if (intvalue) *intvalue = 0;
if (floatvalue) *floatvalue = 0;
return qfalse;
} //end of the function PC_EvaluateTokens
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
int PC_Evaluate(source_t *source, signed long int *intvalue,
float *floatvalue, int integer)
{
token_t token, *firsttoken, *lasttoken;
token_t *t, *nexttoken;
define_t *define;
int defined = qfalse;
if (intvalue) *intvalue = 0;
if (floatvalue) *floatvalue = 0;
//
if (!PC_ReadLine(source, &token))
{
SourceError(source, "no value after #if/#elif");
return qfalse;
} //end if
firsttoken = NULL;
lasttoken = NULL;
do
{
//if the token is a name
if (token.type == TT_NAME)
{
if (defined)
{
defined = qfalse;
t = PC_CopyToken(&token);
t->next = NULL;
if (lasttoken) lasttoken->next = t;
else firsttoken = t;
lasttoken = t;
} //end if
else if (!strcmp(token.string, "defined"))
{
defined = qtrue;
t = PC_CopyToken(&token);
t->next = NULL;
if (lasttoken) lasttoken->next = t;
else firsttoken = t;
lasttoken = t;
} //end if
else
{
//then it must be a define
#if DEFINEHASHING
define = PC_FindHashedDefine(source->definehash, token.string);
#else
define = PC_FindDefine(source->defines, token.string);
#endif //DEFINEHASHING
if (!define)
{
SourceError(source, "can't evaluate %s, not defined", token.string);
return qfalse;
} //end if
if (!PC_ExpandDefineIntoSource(source, &token, define)) return qfalse;
} //end else
} //end if
//if the token is a number or a punctuation
else if (token.type == TT_NUMBER || token.type == TT_PUNCTUATION)
{
t = PC_CopyToken(&token);
t->next = NULL;
if (lasttoken) lasttoken->next = t;
else firsttoken = t;
lasttoken = t;
} //end else
else //can't evaluate the token
{
SourceError(source, "can't evaluate %s", token.string);
return qfalse;
} //end else
} while(PC_ReadLine(source, &token));
//
if (!PC_EvaluateTokens(source, firsttoken, intvalue, floatvalue, integer)) return qfalse;
//
#ifdef DEBUG_EVAL
Log_Write("eval:");
#endif //DEBUG_EVAL
for (t = firsttoken; t; t = nexttoken)
{
#ifdef DEBUG_EVAL
Log_Write(" %s", t->string);
#endif //DEBUG_EVAL
nexttoken = t->next;
PC_FreeToken(t);
} //end for
#ifdef DEBUG_EVAL
if (integer) Log_Write("eval result: %d", *intvalue);
else Log_Write("eval result: %f", *floatvalue);
#endif //DEBUG_EVAL
//
return qtrue;
} //end of the function PC_Evaluate
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
int PC_DollarEvaluate(source_t *source, signed long int *intvalue,
float *floatvalue, int integer)
{
int indent, defined = qfalse;
token_t token, *firsttoken, *lasttoken;
token_t *t, *nexttoken;
define_t *define;
if (intvalue) *intvalue = 0;
if (floatvalue) *floatvalue = 0;
//
if (!PC_ReadSourceToken(source, &token))
{
SourceError(source, "no leading ( after $evalint/$evalfloat");
return qfalse;
} //end if
if (!PC_ReadSourceToken(source, &token))
{
SourceError(source, "nothing to evaluate");
return qfalse;
} //end if
indent = 1;
firsttoken = NULL;
lasttoken = NULL;
do
{
//if the token is a name
if (token.type == TT_NAME)
{
if (defined)
{
defined = qfalse;
t = PC_CopyToken(&token);
t->next = NULL;
if (lasttoken) lasttoken->next = t;
else firsttoken = t;
lasttoken = t;
} //end if
else if (!strcmp(token.string, "defined"))
{
defined = qtrue;
t = PC_CopyToken(&token);
t->next = NULL;
if (lasttoken) lasttoken->next = t;
else firsttoken = t;
lasttoken = t;
} //end if
else
{
//then it must be a define
#if DEFINEHASHING
define = PC_FindHashedDefine(source->definehash, token.string);
#else
define = PC_FindDefine(source->defines, token.string);
#endif //DEFINEHASHING
if (!define)
{
SourceError(source, "can't evaluate %s, not defined", token.string);
return qfalse;
} //end if
if (!PC_ExpandDefineIntoSource(source, &token, define)) return qfalse;
} //end else
} //end if
//if the token is a number or a punctuation
else if (token.type == TT_NUMBER || token.type == TT_PUNCTUATION)
{
if (*token.string == '(') indent++;
else if (*token.string == ')') indent--;
if (indent <= 0) break;
t = PC_CopyToken(&token);
t->next = NULL;
if (lasttoken) lasttoken->next = t;
else firsttoken = t;
lasttoken = t;
} //end else
else //can't evaluate the token
{
SourceError(source, "can't evaluate %s", token.string);
return qfalse;
} //end else
} while(PC_ReadSourceToken(source, &token));
//
if (!PC_EvaluateTokens(source, firsttoken, intvalue, floatvalue, integer)) return qfalse;
//
#ifdef DEBUG_EVAL
Log_Write("$eval:");
#endif //DEBUG_EVAL
for (t = firsttoken; t; t = nexttoken)
{
#ifdef DEBUG_EVAL
Log_Write(" %s", t->string);
#endif //DEBUG_EVAL
nexttoken = t->next;
PC_FreeToken(t);
} //end for
#ifdef DEBUG_EVAL
if (integer) Log_Write("$eval result: %d", *intvalue);
else Log_Write("$eval result: %f", *floatvalue);
#endif //DEBUG_EVAL
//
return qtrue;
} //end of the function PC_DollarEvaluate
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
int PC_Directive_elif(source_t *source)
{
signed long int value;
int type, skip;
PC_PopIndent(source, &type, &skip);
if (!type || type == INDENT_ELSE)
{
SourceError(source, "misplaced #elif");
return qfalse;
} //end if
if (!PC_Evaluate(source, &value, NULL, qtrue)) return qfalse;
skip = (value == 0);
PC_PushIndent(source, INDENT_ELIF, skip);
return qtrue;
} //end of the function PC_Directive_elif
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
int PC_Directive_if(source_t *source)
{
signed long int value;
int skip;
if (!PC_Evaluate(source, &value, NULL, qtrue)) return qfalse;
skip = (value == 0);
PC_PushIndent(source, INDENT_IF, skip);
return qtrue;
} //end of the function PC_Directive
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
int PC_Directive_line(source_t *source)
{
SourceError(source, "#line directive not supported");
return qfalse;
} //end of the function PC_Directive_line
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
int PC_Directive_error(source_t *source)
{
token_t token;
strcpy(token.string, "");
PC_ReadSourceToken(source, &token);
SourceError(source, "#error directive: %s", token.string);
return qfalse;
} //end of the function PC_Directive_error
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
int PC_Directive_pragma(source_t *source)
{
token_t token;
SourceWarning(source, "#pragma directive not supported");
while(PC_ReadLine(source, &token)) ;
return qtrue;
} //end of the function PC_Directive_pragma
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
void UnreadSignToken(source_t *source)
{
token_t token;
token.line = source->scriptstack->line;
token.whitespace_p = source->scriptstack->script_p;
token.endwhitespace_p = source->scriptstack->script_p;
token.linescrossed = 0;
strcpy(token.string, "-");
token.type = TT_PUNCTUATION;
token.subtype = P_SUB;
PC_UnreadSourceToken(source, &token);
} //end of the function UnreadSignToken
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
int PC_Directive_eval(source_t *source)
{
signed long int value;
token_t token;
if (!PC_Evaluate(source, &value, NULL, qtrue)) return qfalse;
//
token.line = source->scriptstack->line;
token.whitespace_p = source->scriptstack->script_p;
token.endwhitespace_p = source->scriptstack->script_p;
token.linescrossed = 0;
sprintf(token.string, "%d", abs(value));
token.type = TT_NUMBER;
token.subtype = TT_INTEGER|TT_LONG|TT_DECIMAL;
PC_UnreadSourceToken(source, &token);
if (value < 0) UnreadSignToken(source);
return qtrue;
} //end of the function PC_Directive_eval
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
int PC_Directive_evalfloat(source_t *source)
{
float value;
token_t token;
if (!PC_Evaluate(source, NULL, &value, qfalse)) return qfalse;
token.line = source->scriptstack->line;
token.whitespace_p = source->scriptstack->script_p;
token.endwhitespace_p = source->scriptstack->script_p;
token.linescrossed = 0;
sprintf(token.string, "%1.2f", fabs(value));
token.type = TT_NUMBER;
token.subtype = TT_FLOAT|TT_LONG|TT_DECIMAL;
PC_UnreadSourceToken(source, &token);
if (value < 0) UnreadSignToken(source);
return qtrue;
} //end of the function PC_Directive_evalfloat
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
directive_t directives[20] =
{
{"if", PC_Directive_if},
{"ifdef", PC_Directive_ifdef},
{"ifndef", PC_Directive_ifndef},
{"elif", PC_Directive_elif},
{"else", PC_Directive_else},
{"endif", PC_Directive_endif},
{"include", PC_Directive_include},
{"define", PC_Directive_define},
{"undef", PC_Directive_undef},
{"line", PC_Directive_line},
{"error", PC_Directive_error},
{"pragma", PC_Directive_pragma},
{"eval", PC_Directive_eval},
{"evalfloat", PC_Directive_evalfloat},
{NULL, NULL}
};
int PC_ReadDirective(source_t *source)
{
token_t token;
int i;
//read the directive name
if (!PC_ReadSourceToken(source, &token))
{
SourceError(source, "found # without name");
return qfalse;
} //end if
//directive name must be on the same line
if (token.linescrossed > 0)
{
PC_UnreadSourceToken(source, &token);
SourceError(source, "found # at end of line");
return qfalse;
} //end if
//if if is a name
if (token.type == TT_NAME)
{
//find the precompiler directive
for (i = 0; directives[i].name; i++)
{
if (!strcmp(directives[i].name, token.string))
{
return directives[i].func(source);
} //end if
} //end for
} //end if
SourceError(source, "unknown precompiler directive %s", token.string);
return qfalse;
} //end of the function PC_ReadDirective
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
int PC_DollarDirective_evalint(source_t *source)
{
signed long int value;
token_t token;
if (!PC_DollarEvaluate(source, &value, NULL, qtrue)) return qfalse;
//
token.line = source->scriptstack->line;
token.whitespace_p = source->scriptstack->script_p;
token.endwhitespace_p = source->scriptstack->script_p;
token.linescrossed = 0;
sprintf(token.string, "%d", abs(value));
token.type = TT_NUMBER;
token.subtype = TT_INTEGER|TT_LONG|TT_DECIMAL;
#ifdef NUMBERVALUE
token.intvalue = abs(value);
token.floatvalue = token.intvalue;
#endif //NUMBERVALUE
PC_UnreadSourceToken(source, &token);
if (value < 0)
UnreadSignToken(source);
return qtrue;
} //end of the function PC_DollarDirective_evalint
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
int PC_DollarDirective_evalfloat(source_t *source)
{
float value;
token_t token;
if (!PC_DollarEvaluate(source, NULL, &value, qfalse)) return qfalse;
token.line = source->scriptstack->line;
token.whitespace_p = source->scriptstack->script_p;
token.endwhitespace_p = source->scriptstack->script_p;
token.linescrossed = 0;
sprintf(token.string, "%1.2f", fabs(value));
token.type = TT_NUMBER;
token.subtype = TT_FLOAT|TT_LONG|TT_DECIMAL;
#ifdef NUMBERVALUE
token.floatvalue = fabs(value);
token.intvalue = (unsigned long) token.floatvalue;
#endif //NUMBERVALUE
PC_UnreadSourceToken(source, &token);
if (value < 0)
UnreadSignToken(source);
return qtrue;
} //end of the function PC_DollarDirective_evalfloat
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
directive_t dollardirectives[20] =
{
{"evalint", PC_DollarDirective_evalint},
{"evalfloat", PC_DollarDirective_evalfloat},
{NULL, NULL}
};
int PC_ReadDollarDirective(source_t *source)
{
token_t token;
int i;
//read the directive name
if (!PC_ReadSourceToken(source, &token))
{
SourceError(source, "found $ without name");
return qfalse;
} //end if
//directive name must be on the same line
if (token.linescrossed > 0)
{
PC_UnreadSourceToken(source, &token);
SourceError(source, "found $ at end of line");
return qfalse;
} //end if
//if if is a name
if (token.type == TT_NAME)
{
//find the precompiler directive
for (i = 0; dollardirectives[i].name; i++)
{
if (!strcmp(dollardirectives[i].name, token.string))
{
return dollardirectives[i].func(source);
} //end if
} //end for
} //end if
PC_UnreadSourceToken(source, &token);
SourceError(source, "unknown precompiler directive %s", token.string);
return qfalse;
} //end of the function PC_ReadDirective
#ifdef QUAKEC
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
int BuiltinFunction(source_t *source)
{
token_t token;
if (!PC_ReadSourceToken(source, &token)) return qfalse;
if (token.type == TT_NUMBER)
{
PC_UnreadSourceToken(source, &token);
return qtrue;
} //end if
else
{
PC_UnreadSourceToken(source, &token);
return qfalse;
} //end else
} //end of the function BuiltinFunction
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
int QuakeCMacro(source_t *source)
{
int i;
token_t token;
if (!PC_ReadSourceToken(source, &token)) return qtrue;
if (token.type != TT_NAME)
{
PC_UnreadSourceToken(source, &token);
return qtrue;
} //end if
//find the precompiler directive
for (i = 0; dollardirectives[i].name; i++)
{
if (!strcmp(dollardirectives[i].name, token.string))
{
PC_UnreadSourceToken(source, &token);
return qfalse;
} //end if
} //end for
PC_UnreadSourceToken(source, &token);
return qtrue;
} //end of the function QuakeCMacro
#endif //QUAKEC
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
int PC_ReadToken(source_t *source, token_t *token)
{
define_t *define;
while(1)
{
if (!PC_ReadSourceToken(source, token)) return qfalse;
//check for precompiler directives
if (token->type == TT_PUNCTUATION && *token->string == '#')
{
#ifdef QUAKEC
if (!BuiltinFunction(source))
#endif //QUAKC
{
//read the precompiler directive
if (!PC_ReadDirective(source)) return qfalse;
continue;
} //end if
} //end if
if (token->type == TT_PUNCTUATION && *token->string == '$')
{
#ifdef QUAKEC
if (!QuakeCMacro(source))
#endif //QUAKEC
{
//read the precompiler directive
if (!PC_ReadDollarDirective(source)) return qfalse;
continue;
} //end if
} //end if
// recursively concatenate strings that are behind each other still resolving defines
if (token->type == TT_STRING)
{
token_t newtoken;
if (PC_ReadToken(source, &newtoken))
{
if (newtoken.type == TT_STRING)
{
token->string[strlen(token->string)-1] = '\0';
if (strlen(token->string) + strlen(newtoken.string+1) + 1 >= MAX_TOKEN)
{
SourceError(source, "string longer than MAX_TOKEN %d", MAX_TOKEN);
return qfalse;
}
strcat(token->string, newtoken.string+1);
}
else
{
PC_UnreadToken(source, &newtoken);
}
}
} //end if
//if skipping source because of conditional compilation
if (source->skip) continue;
//if the token is a name
if (token->type == TT_NAME)
{
//check if the name is a define macro
#if DEFINEHASHING
define = PC_FindHashedDefine(source->definehash, token->string);
#else
define = PC_FindDefine(source->defines, token->string);
#endif //DEFINEHASHING
//if it is a define macro
if (define)
{
//expand the defined macro
if (!PC_ExpandDefineIntoSource(source, token, define)) return qfalse;
continue;
} //end if
} //end if
//copy token for unreading
Com_Memcpy(&source->token, token, sizeof(token_t));
//found a token
return qtrue;
} //end while
} //end of the function PC_ReadToken
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
int PC_ExpectTokenString(source_t *source, char *string)
{
token_t token;
if (!PC_ReadToken(source, &token))
{
SourceError(source, "couldn't find expected %s", string);
return qfalse;
} //end if
if (strcmp(token.string, string))
{
SourceError(source, "expected %s, found %s", string, token.string);
return qfalse;
} //end if
return qtrue;
} //end of the function PC_ExpectTokenString
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
int PC_ExpectTokenType(source_t *source, int type, int subtype, token_t *token)
{
char str[MAX_TOKEN];
if (!PC_ReadToken(source, token))
{
SourceError(source, "couldn't read expected token");
return qfalse;
} //end if
if (token->type != type)
{
strcpy(str, "");
if (type == TT_STRING) strcpy(str, "string");
if (type == TT_LITERAL) strcpy(str, "literal");
if (type == TT_NUMBER) strcpy(str, "number");
if (type == TT_NAME) strcpy(str, "name");
if (type == TT_PUNCTUATION) strcpy(str, "punctuation");
SourceError(source, "expected a %s, found %s", str, token->string);
return qfalse;
} //end if
if (token->type == TT_NUMBER)
{
if ((token->subtype & subtype) != subtype)
{
strcpy(str, "");
if (subtype & TT_DECIMAL) strcpy(str, "decimal");
if (subtype & TT_HEX) strcpy(str, "hex");
if (subtype & TT_OCTAL) strcpy(str, "octal");
if (subtype & TT_BINARY) strcpy(str, "binary");
if (subtype & TT_LONG) strcat(str, " long");
if (subtype & TT_UNSIGNED) strcat(str, " unsigned");
if (subtype & TT_FLOAT) strcat(str, " float");
if (subtype & TT_INTEGER) strcat(str, " integer");
SourceError(source, "expected %s, found %s", str, token->string);
return qfalse;
} //end if
} //end if
else if (token->type == TT_PUNCTUATION)
{
if (token->subtype != subtype)
{
SourceError(source, "found %s", token->string);
return qfalse;
} //end if
} //end else if
return qtrue;
} //end of the function PC_ExpectTokenType
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
int PC_ExpectAnyToken(source_t *source, token_t *token)
{
if (!PC_ReadToken(source, token))
{
SourceError(source, "couldn't read expected token");
return qfalse;
} //end if
else
{
return qtrue;
} //end else
} //end of the function PC_ExpectAnyToken
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
int PC_CheckTokenString(source_t *source, char *string)
{
token_t tok;
if (!PC_ReadToken(source, &tok)) return qfalse;
//if the token is available
if (!strcmp(tok.string, string)) return qtrue;
//
PC_UnreadSourceToken(source, &tok);
return qfalse;
} //end of the function PC_CheckTokenString
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
int PC_CheckTokenType(source_t *source, int type, int subtype, token_t *token)
{
token_t tok;
if (!PC_ReadToken(source, &tok)) return qfalse;
//if the type matches
if (tok.type == type &&
(tok.subtype & subtype) == subtype)
{
Com_Memcpy(token, &tok, sizeof(token_t));
return qtrue;
} //end if
//
PC_UnreadSourceToken(source, &tok);
return qfalse;
} //end of the function PC_CheckTokenType
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
int PC_SkipUntilString(source_t *source, char *string)
{
token_t token;
while(PC_ReadToken(source, &token))
{
if (!strcmp(token.string, string)) return qtrue;
} //end while
return qfalse;
} //end of the function PC_SkipUntilString
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
void PC_UnreadLastToken(source_t *source)
{
PC_UnreadSourceToken(source, &source->token);
} //end of the function PC_UnreadLastToken
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
void PC_UnreadToken(source_t *source, token_t *token)
{
PC_UnreadSourceToken(source, token);
} //end of the function PC_UnreadToken
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
void PC_SetIncludePath(source_t *source, char *path)
{
size_t len;
Q_strncpyz(source->includepath, path, MAX_PATH-1);
len = strlen(source->includepath);
//add trailing path seperator
if (len > 0 && source->includepath[len-1] != '\\' &&
source->includepath[len-1] != '/')
{
strcat(source->includepath, PATHSEPERATOR_STR);
} //end if
} //end of the function PC_SetIncludePath
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
void PC_SetPunctuations(source_t *source, punctuation_t *p)
{
source->punctuations = p;
} //end of the function PC_SetPunctuations
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
source_t *LoadSourceFile(const char *filename)
{
source_t *source;
script_t *script;
PC_InitTokenHeap();
script = LoadScriptFile(filename);
if (!script) return NULL;
script->next = NULL;
source = (source_t *) GetMemory(sizeof(source_t));
Com_Memset(source, 0, sizeof(source_t));
strncpy(source->filename, filename, MAX_PATH);
source->scriptstack = script;
source->tokens = NULL;
source->defines = NULL;
source->indentstack = NULL;
source->skip = 0;
#if DEFINEHASHING
source->definehash = GetClearedMemory(DEFINEHASHSIZE * sizeof(define_t *));
#endif //DEFINEHASHING
PC_AddGlobalDefinesToSource(source);
return source;
} //end of the function LoadSourceFile
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
source_t *LoadSourceMemory(char *ptr, int length, char *name)
{
source_t *source;
script_t *script;
PC_InitTokenHeap();
script = LoadScriptMemory(ptr, length, name);
if (!script) return NULL;
script->next = NULL;
source = (source_t *) GetMemory(sizeof(source_t));
Com_Memset(source, 0, sizeof(source_t));
strncpy(source->filename, name, MAX_PATH);
source->scriptstack = script;
source->tokens = NULL;
source->defines = NULL;
source->indentstack = NULL;
source->skip = 0;
#if DEFINEHASHING
source->definehash = GetClearedMemory(DEFINEHASHSIZE * sizeof(define_t *));
#endif //DEFINEHASHING
PC_AddGlobalDefinesToSource(source);
return source;
} //end of the function LoadSourceMemory
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
void FreeSource(source_t *source)
{
script_t *script;
token_t *token;
define_t *define;
indent_t *indent;
int i;
//PC_PrintDefineHashTable(source->definehash);
//free all the scripts
while(source->scriptstack)
{
script = source->scriptstack;
source->scriptstack = source->scriptstack->next;
FreeScript(script);
} //end for
//free all the tokens
while(source->tokens)
{
token = source->tokens;
source->tokens = source->tokens->next;
PC_FreeToken(token);
} //end for
#if DEFINEHASHING
for (i = 0; i < DEFINEHASHSIZE; i++)
{
while(source->definehash[i])
{
define = source->definehash[i];
source->definehash[i] = source->definehash[i]->hashnext;
PC_FreeDefine(define);
} //end while
} //end for
#else //DEFINEHASHING
//free all defines
while(source->defines)
{
define = source->defines;
source->defines = source->defines->next;
PC_FreeDefine(define);
} //end for
#endif //DEFINEHASHING
//free all indents
while(source->indentstack)
{
indent = source->indentstack;
source->indentstack = source->indentstack->next;
FreeMemory(indent);
} //end for
#if DEFINEHASHING
//
if (source->definehash) FreeMemory(source->definehash);
#endif //DEFINEHASHING
//free the source itself
FreeMemory(source);
} //end of the function FreeSource
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
#define MAX_SOURCEFILES 64
source_t *sourceFiles[MAX_SOURCEFILES];
int PC_LoadSourceHandle(const char *filename)
{
source_t *source;
int i;
for (i = 1; i < MAX_SOURCEFILES; i++)
{
if (!sourceFiles[i])
break;
} //end for
if (i >= MAX_SOURCEFILES)
return 0;
PS_SetBaseFolder("");
source = LoadSourceFile(filename);
if (!source)
return 0;
sourceFiles[i] = source;
return i;
} //end of the function PC_LoadSourceHandle
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
int PC_FreeSourceHandle(int handle)
{
if (handle < 1 || handle >= MAX_SOURCEFILES)
return qfalse;
if (!sourceFiles[handle])
return qfalse;
FreeSource(sourceFiles[handle]);
sourceFiles[handle] = NULL;
return qtrue;
} //end of the function PC_FreeSourceHandle
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
int PC_ReadTokenHandle(int handle, pc_token_t *pc_token)
{
token_t token;
int ret;
if (handle < 1 || handle >= MAX_SOURCEFILES)
return 0;
if (!sourceFiles[handle])
return 0;
ret = PC_ReadToken(sourceFiles[handle], &token);
strcpy(pc_token->string, token.string);
pc_token->type = token.type;
pc_token->subtype = token.subtype;
pc_token->intvalue = token.intvalue;
pc_token->floatvalue = token.floatvalue;
if (pc_token->type == TT_STRING)
StripDoubleQuotes(pc_token->string);
return ret;
} //end of the function PC_ReadTokenHandle
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
int PC_SourceFileAndLine(int handle, char *filename, int *line)
{
if (handle < 1 || handle >= MAX_SOURCEFILES)
return qfalse;
if (!sourceFiles[handle])
return qfalse;
strcpy(filename, sourceFiles[handle]->filename);
if (sourceFiles[handle]->scriptstack)
*line = sourceFiles[handle]->scriptstack->line;
else
*line = 0;
return qtrue;
} //end of the function PC_SourceFileAndLine
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
void PC_SetBaseFolder(char *path)
{
PS_SetBaseFolder(path);
} //end of the function PC_SetBaseFolder
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
void PC_CheckOpenSourceHandles(void)
{
int i;
for (i = 1; i < MAX_SOURCEFILES; i++)
{
if (sourceFiles[i])
{
#ifdef BOTLIB
botimport.Print(PRT_ERROR, "file %s still open in precompiler\n", sourceFiles[i]->scriptstack->filename);
#endif //BOTLIB
} //end if
} //end for
} //end of the function PC_CheckOpenSourceHandles
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