| // Copyright 2020 The Tint Authors. |
| // |
| // 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 SRC_READER_SPIRV_NAMER_H_ |
| #define SRC_READER_SPIRV_NAMER_H_ |
| |
| #include <cstdint> |
| #include <string> |
| #include <unordered_map> |
| |
| #include "src/reader/spirv/fail_stream.h" |
| |
| namespace tint { |
| namespace reader { |
| namespace spirv { |
| |
| /// A Namer maps SPIR-V IDs to strings. |
| class Namer { |
| public: |
| /// Creates a new namer |
| /// @param fail_stream the error reporting stream |
| explicit Namer(const FailStream& fail_stream); |
| /// Destructor |
| ~Namer(); |
| |
| /// Registers a failure. |
| /// @returns a fail stream to accumulate diagnostics. |
| FailStream& Fail() { return fail_stream_.Fail(); } |
| |
| /// @param id the SPIR-V ID |
| /// @returns true if we the given ID already has a registered name. |
| bool HasName(uint32_t id) { |
| return id_to_name_.find(id) != id_to_name_.end(); |
| } |
| |
| /// @param id the SPIR-V ID |
| /// @returns the name for the ID. It must have been registered. |
| const std::string& GetName(uint32_t id) { |
| return id_to_name_.find(id)->second; |
| } |
| |
| /// Records a mapping from the given ID to a name. Emits a failure |
| /// if the ID already has a registered name. |
| /// @param id the SPIR-V ID |
| /// @param name the name to map to the ID |
| /// @returns true if the ID did not have a previously registered name. |
| bool SaveName(uint32_t id, const std::string& name); |
| |
| private: |
| FailStream fail_stream_; |
| |
| // Maps an ID to its registered name. |
| std::unordered_map<uint32_t, std::string> id_to_name_; |
| }; |
| |
| } // namespace spirv |
| } // namespace reader |
| } // namespace tint |
| |
| #endif // SRC_READER_SPIRV_NAMER_H_ |