src/gallium/auxiliary/tgsi/tgsi_iterate.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 #include "pipe/p_debug.h"
  29 #include "tgsi_iterate.h"
  30
  31 boolean
  32 tgsi_iterate_shader(
  33    const struct tgsi_token *tokens,
  34    struct tgsi_iterate_context *ctx )
  35 {
  36    struct tgsi_parse_context parse;
  37
  38    if (tgsi_parse_init( &parse, tokens ) != TGSI_PARSE_OK)
  39       return FALSE;
  40
  41    ctx->processor = parse.FullHeader.Processor;
  42    ctx->version = parse.FullVersion.Version;
  43
  44    if (ctx->prolog)
  45       if (!ctx->prolog( ctx ))
  46          goto fail;
  47
  48    while (!tgsi_parse_end_of_tokens( &parse )) {
  49       tgsi_parse_token( &parse );
  50
  51       switch (parse.FullToken.Token.Type) {
  52       case TGSI_TOKEN_TYPE_INSTRUCTION:
  53          if (ctx->iterate_instruction)
  54             if (!ctx->iterate_instruction( ctx, &parse.FullToken.FullInstruction ))
  55                goto fail;
  56          break;
  57
  58       case TGSI_TOKEN_TYPE_DECLARATION:
  59          if (ctx->iterate_declaration)
  60             if (!ctx->iterate_declaration( ctx, &parse.FullToken.FullDeclaration ))
  61                goto fail;
  62          break;
  63
  64       case TGSI_TOKEN_TYPE_IMMEDIATE:
  65          if (ctx->iterate_immediate)
  66             if (!ctx->iterate_immediate( ctx, &parse.FullToken.FullImmediate ))
  67                goto fail;
  68          break;
  69
  70       default:
  71          assert( 0 );
  72       }
  73    }
  74
  75    if (ctx->epilog)
  76       if (!ctx->epilog( ctx ))
  77          goto fail;
  78
  79    tgsi_parse_free( &parse );
  80    return TRUE;
  81
  82 fail:
  83    tgsi_parse_free( &parse );
  84    return FALSE;
  85 }