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/*
* Mesa 3-D graphics library
* Version: 6.3
*
* Copyright (C) 2005 Brian Paul All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/**
* \file slang_preprocess.c
* slang preprocessor
* \author Michal Krol
*/
#include "imports.h"
#include "grammar_mesa.h"
#include "slang_compile.h"
#include "slang_preprocess.h"
static const char *slang_version_syn =
#include "library/slang_version_syn.h"
;
int _slang_preprocess_version (const char *text, unsigned int *version, unsigned int *eaten,
slang_info_log *log)
{
grammar id;
byte *prod, *I;
unsigned int size;
id = grammar_load_from_text ((const byte *) slang_version_syn);
if (id == 0)
{
char buf[1024];
unsigned int pos;
grammar_get_last_error ( (unsigned char*) buf, 1024, (int*) &pos);
slang_info_log_error (log, buf);
return 0;
}
if (!grammar_fast_check (id, (const byte *) text, &prod, &size, 8))
{
char buf[1024];
unsigned int pos;
grammar_get_last_error ( (unsigned char*) buf, 1024, (int*) &pos);
slang_info_log_error (log, buf);
grammar_destroy (id);
return 0;
}
grammar_destroy (id);
/* there can be multiple #version directives - grab the last one */
I = prod;
while (I < prod + size)
{
*version =
(unsigned int) I[0] +
(unsigned int) I[1] * 100;
*eaten =
((unsigned int) I[2]) +
((unsigned int) I[3] << 8) +
((unsigned int) I[4] << 16) +
((unsigned int) I[5] << 24);
I += 6;
}
grammar_alloc_free (prod);
return 1;
}
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