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/*
* Mesa 3-D graphics library
* Version: 6.5
*
* Copyright (C) 2005-2006 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_preprocess.h"
static const char *slang_pp_version_syn =
#include "library/slang_pp_version_syn.h"
;
static GLvoid
grammar_error_to_log (slang_info_log *log)
{
char buf[1024];
int pos;
grammar_get_last_error ((byte *) (buf), sizeof (buf), &pos);
slang_info_log_error (log, buf);
}
GLboolean
_slang_preprocess_version (const char *text, GLuint *version, GLuint *eaten, slang_info_log *log)
{
grammar id;
byte *prod, *I;
unsigned int size;
id = grammar_load_from_text ((const byte *) (slang_pp_version_syn));
if (id == 0) {
grammar_error_to_log (log);
return GL_FALSE;
}
if (!grammar_fast_check (id, (const byte *) (text), &prod, &size, 8)) {
grammar_error_to_log (log);
grammar_destroy (id);
return GL_FALSE;
}
/* there can be multiple #version directives - grab the last one */
I = &prod[size - 6];
*version = (GLuint) (I[0]) + (GLuint) (I[1]) * 100;
*eaten = (GLuint) (I[2]) + ((GLuint) (I[3]) << 8) + ((GLuint) (I[4]) << 16) + ((GLuint) (I[5]) << 24);
grammar_destroy (id);
grammar_alloc_free (prod);
return GL_TRUE;
}
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