|  | // 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_AST_TYPE_H_ | 
|  | #define SRC_AST_TYPE_H_ | 
|  |  | 
|  | #include <string> | 
|  |  | 
|  | #include "src/ast/node.h" | 
|  | #include "src/clone_context.h" | 
|  |  | 
|  | namespace tint { | 
|  |  | 
|  | // Forward declarations | 
|  | class ProgramBuilder; | 
|  | class SymbolTable; | 
|  |  | 
|  | namespace ast { | 
|  |  | 
|  | /// Base class for a type in the system | 
|  | class Type : public Castable<Type, Node> { | 
|  | public: | 
|  | /// Move constructor | 
|  | Type(Type&&); | 
|  | ~Type() override; | 
|  |  | 
|  | /// @param symbols the program's symbol table | 
|  | /// @returns the name for this type that closely resembles how it would be | 
|  | /// declared in WGSL. | 
|  | virtual std::string FriendlyName(const SymbolTable& symbols) const = 0; | 
|  |  | 
|  | protected: | 
|  | /// Constructor | 
|  | /// @param pid the identifier of the program that owns this node | 
|  | /// @param src the source of this node | 
|  | Type(ProgramID pid, const Source& src); | 
|  | }; | 
|  |  | 
|  | }  // namespace ast | 
|  | }  // namespace tint | 
|  |  | 
|  | #endif  // SRC_AST_TYPE_H_ |