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Ruta de la carpeta: \\game3dprogramming\materials\DarkPuzzle\libs\bullet_sdk\jam-2.5\parse.c
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/* * Copyright 1993, 2000 Christopher Seiwald. * * This file is part of Jam - see jam.c for Copyright information. */ /* * parse.c - make and destroy parse trees as driven by the parser * * 09/07/00 (seiwald) - ref count on PARSE to avoid freeing when used, * as per Matt Armstrong. * 09/11/00 (seiwald) - structure reworked to reflect that (*func)() * returns a LIST *. * 10/22/02 (seiwald) - working return/break/continue statements * 11/04/02 (seiwald) - const-ing for string literals */ # include "jam.h" # include "lists.h" # include "parse.h" # include "scan.h" # include "newstr.h" static PARSE *yypsave; void parse_file( const char *f ) { /* Suspend scan of current file */ /* and push this new file in the stream */ yyfparse(f); /* Now parse each block of rules and execute it. */ /* Execute it outside of the parser so that recursive */ /* calls to yyrun() work (no recursive yyparse's). */ for(;;) { LOL l; PARSE *p; int jmp = 0; /* JMP_NONE */ /* $(<) and $(>) empty in outer scope. */ lol_init( &l ); /* Filled by yyparse() calling parse_save() */ yypsave = 0; /* If parse error or empty parse, outta here */ if( yyparse() || !( p = yypsave ) ) break; /* Run the parse tree. */ list_free( (*(p->func))( p, &l, &jmp ) ); parse_free( p ); } } void parse_save( PARSE *p ) { yypsave = p; } PARSE * parse_make( LIST *(*func)( PARSE *p, LOL *args, int *jmp ), PARSE *left, PARSE *right, PARSE *third, const char *string, const char *string1, int num ) { PARSE *p = (PARSE *)malloc( sizeof( PARSE ) ); p->func = func; p->left = left; p->right = right; p->third = third; p->string = string; p->string1 = string1; p->num = num; p->refs = 1; return p; } void parse_refer( PARSE *p ) { ++p->refs; } void parse_free( PARSE *p ) { if( --p->refs ) return; if( p->string ) freestr( p->string ); if( p->string1 ) freestr( p->string1 ); if( p->left ) parse_free( p->left ); if( p->right ) parse_free( p->right ); if( p->third ) parse_free( p->third ); free( (char *)p ); }
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