| // 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_TINT_WRITER_SPIRV_OPERAND_H_ |
| #define SRC_TINT_WRITER_SPIRV_OPERAND_H_ |
| |
| #include <cstring> |
| #include <string> |
| #include <variant> |
| #include <vector> |
| |
| #include "src/tint/utils/hash.h" |
| |
| namespace tint::writer::spirv { |
| |
| /// A single SPIR-V instruction operand |
| using Operand = std::variant<uint32_t, float, std::string>; |
| |
| // Helper for returning an uint32_t Operand with the provided integer value. |
| template <typename T> |
| inline Operand U32Operand(T val) { |
| return Operand{static_cast<uint32_t>(val)}; |
| } |
| |
| /// @returns the number of uint32_t's needed for this operand |
| uint32_t OperandLength(const Operand& o); |
| |
| /// A list of operands |
| using OperandList = std::vector<Operand>; |
| |
| using OperandListKey = utils::UnorderedKeyWrapper<OperandList>; |
| |
| } // namespace tint::writer::spirv |
| |
| namespace std { |
| |
| /// Custom std::hash specialization for tint::writer::spirv::Operand |
| template <> |
| class hash<tint::writer::spirv::Operand> { |
| public: |
| /// @param o the Operand |
| /// @return the hash value |
| inline std::size_t operator()(const tint::writer::spirv::Operand& o) const { |
| return std::visit([](auto v) { return tint::utils::Hash(v); }, o); |
| } |
| }; |
| |
| } // namespace std |
| #endif // SRC_TINT_WRITER_SPIRV_OPERAND_H_ |