tgsi_iterate.c revision 3ff688ea299581e60caf5d6e1a464f68c717fe83 
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 "util/u_debug.h"
29#include "tgsi_iterate.h"
30
31boolean
32tgsi_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
87fail:
88   tgsi_parse_free( &parse );
89   return FALSE;
90}
91