1 // Copyright 2021 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_MEMBER_ACCESSOR_EXPRESSION_H_ 16 #define SRC_SEM_MEMBER_ACCESSOR_EXPRESSION_H_ 17 18 #include <vector> 19 20 #include "src/sem/expression.h" 21 22 namespace tint { 23 24 /// Forward declarations 25 namespace ast { 26 class MemberAccessorExpression; 27 } // namespace ast 28 29 namespace sem { 30 31 /// Forward declarations 32 class Struct; 33 class StructMember; 34 35 /// MemberAccessorExpression holds the semantic information for a 36 /// ast::MemberAccessorExpression node. 37 class MemberAccessorExpression 38 : public Castable<MemberAccessorExpression, Expression> { 39 public: 40 /// Constructor 41 /// @param declaration the AST node 42 /// @param type the resolved type of the expression 43 /// @param statement the statement that owns this expression 44 MemberAccessorExpression(const ast::MemberAccessorExpression* declaration, 45 const sem::Type* type, 46 const Statement* statement); 47 48 /// Destructor 49 ~MemberAccessorExpression() override; 50 }; 51 52 /// StructMemberAccess holds the semantic information for a 53 /// ast::MemberAccessorExpression node that represents an access to a structure 54 /// member. 55 class StructMemberAccess 56 : public Castable<StructMemberAccess, MemberAccessorExpression> { 57 public: 58 /// Constructor 59 /// @param declaration the AST node 60 /// @param type the resolved type of the expression 61 /// @param statement the statement that owns this expression 62 /// @param member the structure member 63 StructMemberAccess(const ast::MemberAccessorExpression* declaration, 64 const sem::Type* type, 65 const Statement* statement, 66 const StructMember* member); 67 68 /// Destructor 69 ~StructMemberAccess() override; 70 71 /// @returns the structure member Member()72 StructMember const* Member() const { return member_; } 73 74 private: 75 StructMember const* const member_; 76 }; 77 78 /// Swizzle holds the semantic information for a ast::MemberAccessorExpression 79 /// node that represents a vector swizzle. 80 class Swizzle : public Castable<Swizzle, MemberAccessorExpression> { 81 public: 82 /// Constructor 83 /// @param declaration the AST node 84 /// @param type the resolved type of the expression 85 /// @param statement the statement that owns this expression 86 /// @param indices the swizzle indices 87 Swizzle(const ast::MemberAccessorExpression* declaration, 88 const sem::Type* type, 89 const Statement* statement, 90 std::vector<uint32_t> indices); 91 92 /// Destructor 93 ~Swizzle() override; 94 95 /// @return the swizzle indices, if this is a vector swizzle Indices()96 const std::vector<uint32_t>& Indices() const { return indices_; } 97 98 private: 99 std::vector<uint32_t> const indices_; 100 }; 101 102 } // namespace sem 103 } // namespace tint 104 105 #endif // SRC_SEM_MEMBER_ACCESSOR_EXPRESSION_H_ 106