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_CALL_EXPRESSION_H_ 16 #define SRC_AST_CALL_EXPRESSION_H_ 17 18 #include "src/ast/expression.h" 19 20 namespace tint { 21 namespace ast { 22 23 // Forward declarations. 24 class Type; 25 class IdentifierExpression; 26 27 /// A call expression - represents either a: 28 /// * sem::Function 29 /// * sem::Intrinsic 30 /// * sem::TypeConstructor 31 /// * sem::TypeConversion 32 class CallExpression : public Castable<CallExpression, Expression> { 33 public: 34 /// Constructor 35 /// @param program_id the identifier of the program that owns this node 36 /// @param source the call expression source 37 /// @param name the function or type name 38 /// @param args the arguments 39 CallExpression(ProgramID program_id, 40 const Source& source, 41 const IdentifierExpression* name, 42 ExpressionList args); 43 44 /// Constructor 45 /// @param program_id the identifier of the program that owns this node 46 /// @param source the call expression source 47 /// @param type the type 48 /// @param args the arguments 49 CallExpression(ProgramID program_id, 50 const Source& source, 51 const Type* type, 52 ExpressionList args); 53 54 /// Move constructor 55 CallExpression(CallExpression&&); 56 ~CallExpression() override; 57 58 /// Clones this node and all transitive child nodes using the `CloneContext` 59 /// `ctx`. 60 /// @param ctx the clone context 61 /// @return the newly cloned node 62 const CallExpression* Clone(CloneContext* ctx) const override; 63 64 /// Target is either an identifier, or a Type. 65 /// One of these must be nullptr and the other a non-nullptr. 66 struct Target { 67 /// name is a function or intrinsic to call, or type name to construct or 68 /// cast-to 69 const IdentifierExpression* name = nullptr; 70 /// type to construct or cast-to 71 const Type* type = nullptr; 72 }; 73 74 /// The target function 75 const Target target; 76 77 /// The arguments 78 const ExpressionList args; 79 }; 80 81 } // namespace ast 82 } // namespace tint 83 84 #endif // SRC_AST_CALL_EXPRESSION_H_ 85