| // Copyright 2015 The Shaderc Authors. All rights reserved. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #ifndef GLSLC_FILE_INCLUDER_H_ |
| #define GLSLC_FILE_INCLUDER_H_ |
| |
| #include <mutex> |
| #include <string> |
| #include <unordered_map> |
| #include <unordered_set> |
| #include <utility> |
| #include <vector> |
| #include <unordered_set> |
| |
| #include "libshaderc_util/file_finder.h" |
| #include "shaderc/shaderc.hpp" |
| |
| namespace glslc { |
| |
| // An includer for files implementing shaderc's includer interface. It responds |
| // to the file including query from the compiler with the full path and content |
| // of the file to be included. In the case that the file is not found or cannot |
| // be opened, the full path field of in the response will point to an empty |
| // string, and error message will be passed to the content field. |
| // This class provides the basic thread-safety guarantee. |
| class FileIncluder : public shaderc::CompileOptions::IncluderInterface { |
| public: |
| explicit FileIncluder(const shaderc_util::FileFinder* file_finder) |
| : file_finder_(*file_finder) {} |
| // Resolves a requested source file of a given type from a requesting |
| // source into a shaderc_include_result whose contents will remain valid |
| // until it's released. |
| shaderc_include_result* GetInclude(const char* requested_source, |
| shaderc_include_type type, |
| const char* requesting_source, |
| size_t include_depth) override; |
| // Releases an include result. |
| void ReleaseInclude(shaderc_include_result* include_result) override; |
| |
| // Returns a reference to the member storing the set of included files. |
| const std::unordered_set<std::string>& file_path_trace() const { |
| return included_files_; |
| }; |
| |
| private: |
| // Used by GetInclude() to get the full filepath. |
| const shaderc_util::FileFinder& file_finder_; |
| // The full path and content of a source file. |
| struct FileInfo { |
| const std::string full_path; |
| std::vector<char> contents; |
| }; |
| |
| // The set of full paths of included files. |
| std::unordered_set<std::string> included_files_; |
| }; |
| |
| } // namespace glslc |
| |
| #endif // GLSLC_FILE_INCLUDER_H_ |