1 // Copyright 2020 The Tint Authors. 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 #ifndef SRC_AST_OVERRIDE_DECORATION_H_ 16 #define SRC_AST_OVERRIDE_DECORATION_H_ 17 18 #include <string> 19 20 #include "src/ast/decoration.h" 21 22 namespace tint { 23 namespace ast { 24 25 /// An override decoration 26 class OverrideDecoration : public Castable<OverrideDecoration, Decoration> { 27 public: 28 /// Create an override decoration with no specified id. 29 /// @param pid the identifier of the program that owns this node 30 /// @param src the source of this node 31 OverrideDecoration(ProgramID pid, const Source& src); 32 /// Create an override decoration with a specific id value. 33 /// @param pid the identifier of the program that owns this node 34 /// @param src the source of this node 35 /// @param val the override value 36 OverrideDecoration(ProgramID pid, const Source& src, uint32_t val); 37 ~OverrideDecoration() override; 38 39 /// @returns the WGSL name for the decoration 40 std::string Name() const override; 41 42 /// Clones this node and all transitive child nodes using the `CloneContext` 43 /// `ctx`. 44 /// @param ctx the clone context 45 /// @return the newly cloned node 46 const OverrideDecoration* Clone(CloneContext* ctx) const override; 47 48 /// True if an override id was specified 49 const bool has_value; 50 51 /// The override id value 52 const uint32_t value; 53 }; 54 55 } // namespace ast 56 } // namespace tint 57 58 #endif // SRC_AST_OVERRIDE_DECORATION_H_ 59