| 1 | /* |
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| 2 | * Copyright 2018-2021 Arm Limited |
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| 3 | * SPDX-License-Identifier: Apache-2.0 OR MIT |
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| 4 | * |
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| 5 | * Licensed under the Apache License, Version 2.0 (the "License"); |
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| 6 | * you may not use this file except in compliance with the License. |
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| 7 | * You may obtain a copy of the License at |
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| 8 | * |
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| 9 | * http://www.apache.org/licenses/LICENSE-2.0 |
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| 10 | * |
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| 11 | * Unless required by applicable law or agreed to in writing, software |
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| 12 | * distributed under the License is distributed on an "AS IS" BASIS, |
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| 13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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| 14 | * See the License for the specific language governing permissions and |
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| 15 | * limitations under the License. |
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| 16 | */ |
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| 17 | |
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| 18 | /* |
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| 19 | * At your option, you may choose to accept this material under either: |
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| 20 | * 1. The Apache License, Version 2.0, found at <http://www.apache.org/licenses/LICENSE-2.0>, or |
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| 21 | * 2. The MIT License, found at <http://opensource.org/licenses/MIT>. |
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| 22 | */ |
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| 23 | |
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| 24 | #ifndef SPIRV_CROSS_PARSER_HPP |
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| 25 | #define SPIRV_CROSS_PARSER_HPP |
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| 26 | |
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| 27 | #include "spirv_cross_parsed_ir.hpp" |
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| 28 | #include <stdint.h> |
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| 29 | |
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| 30 | namespace SPIRV_CROSS_NAMESPACE |
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| 31 | { |
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| 32 | class Parser |
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| 33 | { |
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| 34 | public: |
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| 35 | Parser(const uint32_t *spirv_data, size_t word_count); |
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| 36 | Parser(std::vector<uint32_t> spirv); |
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| 37 | |
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| 38 | void parse(); |
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| 39 | |
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| 40 | ParsedIR &get_parsed_ir() |
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| 41 | { |
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| 42 | return ir; |
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| 43 | } |
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| 44 | |
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| 45 | private: |
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| 46 | ParsedIR ir; |
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| 47 | SPIRFunction *current_function = nullptr; |
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| 48 | SPIRBlock *current_block = nullptr; |
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| 49 | // For workarounds. |
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| 50 | bool ignore_trailing_block_opcodes = false; |
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| 51 | |
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| 52 | void parse(const Instruction &instr); |
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| 53 | const uint32_t *stream(const Instruction &instr) const; |
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| 54 | |
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| 55 | template <typename T, typename... P> |
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| 56 | T &set(uint32_t id, P &&... args) |
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| 57 | { |
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| 58 | ir.add_typed_id(type: static_cast<Types>(T::type), id); |
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| 59 | auto &var = variant_set<T>(ir.ids[id], std::forward<P>(args)...); |
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| 60 | var.self = id; |
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| 61 | return var; |
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| 62 | } |
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| 63 | |
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| 64 | template <typename T> |
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| 65 | T &get(uint32_t id) |
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| 66 | { |
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| 67 | return variant_get<T>(ir.ids[id]); |
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| 68 | } |
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| 69 | |
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| 70 | template <typename T> |
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| 71 | T *maybe_get(uint32_t id) |
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| 72 | { |
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| 73 | if (ir.ids[id].get_type() == static_cast<Types>(T::type)) |
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| 74 | return &get<T>(id); |
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| 75 | else |
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| 76 | return nullptr; |
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| 77 | } |
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| 78 | |
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| 79 | template <typename T> |
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| 80 | const T &get(uint32_t id) const |
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| 81 | { |
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| 82 | return variant_get<T>(ir.ids[id]); |
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| 83 | } |
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| 84 | |
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| 85 | template <typename T> |
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| 86 | const T *maybe_get(uint32_t id) const |
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| 87 | { |
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| 88 | if (ir.ids[id].get_type() == T::type) |
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| 89 | return &get<T>(id); |
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| 90 | else |
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| 91 | return nullptr; |
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| 92 | } |
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| 93 | |
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| 94 | // This must be an ordered data structure so we always pick the same type aliases. |
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| 95 | SmallVector<uint32_t> global_struct_cache; |
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| 96 | SmallVector<std::pair<uint32_t, uint32_t>> forward_pointer_fixups; |
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| 97 | |
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| 98 | bool types_are_logically_equivalent(const SPIRType &a, const SPIRType &b) const; |
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| 99 | bool variable_storage_is_aliased(const SPIRVariable &v) const; |
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| 100 | }; |
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| 101 | } // namespace SPIRV_CROSS_NAMESPACE |
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| 102 | |
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| 103 | #endif |
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| 104 | |
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