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

source code of qtshadertools/src/3rdparty/SPIRV-Cross/spirv_parser.hpp