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_CASE_STATEMENT_H_ 16 #define SRC_AST_CASE_STATEMENT_H_ 17 18 #include <vector> 19 20 #include "src/ast/block_statement.h" 21 #include "src/ast/int_literal_expression.h" 22 23 namespace tint { 24 namespace ast { 25 26 /// A list of case literals 27 using CaseSelectorList = std::vector<const IntLiteralExpression*>; 28 29 /// A case statement 30 class CaseStatement : public Castable<CaseStatement, Statement> { 31 public: 32 /// Constructor 33 /// @param pid the identifier of the program that owns this node 34 /// @param src the source of this node 35 /// @param selectors the case selectors 36 /// @param body the case body 37 CaseStatement(ProgramID pid, 38 const Source& src, 39 CaseSelectorList selectors, 40 const BlockStatement* body); 41 /// Move constructor 42 CaseStatement(CaseStatement&&); 43 ~CaseStatement() override; 44 45 /// @returns true if this is a default statement IsDefault()46 bool IsDefault() const { return selectors.empty(); } 47 48 /// Clones this node and all transitive child nodes using the `CloneContext` 49 /// `ctx`. 50 /// @param ctx the clone context 51 /// @return the newly cloned node 52 const CaseStatement* Clone(CloneContext* ctx) const override; 53 54 /// The case selectors, empty if none set 55 const CaseSelectorList selectors; 56 57 /// The case body 58 const BlockStatement* const body; 59 }; 60 61 /// A list of case statements 62 using CaseStatementList = std::vector<const CaseStatement*>; 63 64 } // namespace ast 65 } // namespace tint 66 67 #endif // SRC_AST_CASE_STATEMENT_H_ 68