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      1 // Copyright 2015 The Shaderc Authors. All rights reserved.
      2 //
      3 // Licensed under the Apache License, Version 2.0 (the "License");
      4 // you may not use this file except in compliance with the License.
      5 // You may obtain a copy of the License at
      6 //
      7 //     http://www.apache.org/licenses/LICENSE-2.0
      8 //
      9 // Unless required by applicable law or agreed to in writing, software
     10 // distributed under the License is distributed on an "AS IS" BASIS,
     11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     12 // See the License for the specific language governing permissions and
     13 // limitations under the License.
     14 
     15 #include "libshaderc_util/shader_stage.h"
     16 
     17 namespace {
     18 
     19 // Maps an identifier to a language.
     20 struct LanguageMapping {
     21   const char* id;
     22   EShLanguage language;
     23 };
     24 
     25 }  // anonymous namespace
     26 
     27 namespace shaderc_util {
     28 
     29 EShLanguage MapStageNameToLanguage(const string_piece& stage_name) {
     30   const LanguageMapping string_to_stage[] = {
     31       {"vertex", EShLangVertex},
     32       {"fragment", EShLangFragment},
     33       {"tesscontrol", EShLangTessControl},
     34       {"tesseval", EShLangTessEvaluation},
     35       {"geometry", EShLangGeometry},
     36       {"compute", EShLangCompute}};
     37 
     38   for (const auto& entry : string_to_stage) {
     39     if (stage_name == entry.id) return entry.language;
     40   }
     41   return EShLangCount;
     42 }
     43 
     44 }  // namespace shaderc_util
     45