src/gallium/auxiliary/tgsi/tgsi_iterate.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2008 VMware, Inc.
   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 VMWARE 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 "util/u_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
  43    if (ctx->prolog)
  44       if (!ctx->prolog( ctx ))
  45          goto fail;
  46
  47    while (!tgsi_parse_end_of_tokens( &parse )) {
  48       tgsi_parse_token( &parse );
  49
  50       switch (parse.FullToken.Token.Type) {
  51       case TGSI_TOKEN_TYPE_INSTRUCTION:
  52          if (ctx->iterate_instruction)
  53             if (!ctx->iterate_instruction( ctx, &parse.FullToken.FullInstruction ))
  54                goto fail;
  55          break;
  56
  57       case TGSI_TOKEN_TYPE_DECLARATION:
  58          if (ctx->iterate_declaration)
  59             if (!ctx->iterate_declaration( ctx, &parse.FullToken.FullDeclaration ))
  60                goto fail;
  61          break;
  62
  63       case TGSI_TOKEN_TYPE_IMMEDIATE:
  64          if (ctx->iterate_immediate)
  65             if (!ctx->iterate_immediate( ctx, &parse.FullToken.FullImmediate ))
  66                goto fail;
  67          break;
  68
  69       case TGSI_TOKEN_TYPE_PROPERTY:
  70          if (ctx->iterate_property)
  71             if (!ctx->iterate_property( ctx,  &parse.FullToken.FullProperty ))
  72                goto fail;
  73          break;
  74
  75       default:
  76          assert( 0 );
  77       }
  78    }
  79
  80    if (ctx->epilog)
  81       if (!ctx->epilog( ctx ))
  82          goto fail;
  83
  84    tgsi_parse_free( &parse );
  85    return TRUE;
  86
  87 fail:
  88    tgsi_parse_free( &parse );
  89    return FALSE;
  90 }