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      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 
     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 }
     91