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_SEM_BOOL_TYPE_H_ 16 #define SRC_SEM_BOOL_TYPE_H_ 17 18 #include <string> 19 20 #include "src/sem/type.h" 21 22 // X11 likes to #define Bool leading to confusing error messages. 23 // If its defined, undefine it. 24 #ifdef Bool 25 #undef Bool 26 #endif 27 28 namespace tint { 29 namespace sem { 30 31 /// A boolean type 32 class Bool : public Castable<Bool, Type> { 33 public: 34 /// Constructor 35 Bool(); 36 /// Move constructor 37 Bool(Bool&&); 38 ~Bool() override; 39 40 /// @returns the name for this type 41 std::string type_name() const override; 42 43 /// @param symbols the program's symbol table 44 /// @returns the name for this type that closely resembles how it would be 45 /// declared in WGSL. 46 std::string FriendlyName(const SymbolTable& symbols) const override; 47 48 /// @returns true if constructible as per 49 /// https://gpuweb.github.io/gpuweb/wgsl/#constructible-types 50 bool IsConstructible() const override; 51 52 /// @returns the size in bytes of the type. 53 /// @note: booleans are not host-sharable, but still may exist in workgroup 54 /// storage. 55 uint32_t Size() const override; 56 57 /// @returns the alignment in bytes of the type. 58 /// @note: booleans are not host-sharable, but still may exist in workgroup 59 /// storage. 60 uint32_t Align() const override; 61 }; 62 63 } // namespace sem 64 } // namespace tint 65 66 #endif // SRC_SEM_BOOL_TYPE_H_ 67