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// Copyright 2021 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_SEM_TYPE_MAPPINGS_H_
#define SRC_SEM_TYPE_MAPPINGS_H_
#include <type_traits>
namespace tint {
// Forward declarations
namespace ast {
class CallExpression;
class Expression;
class Function;
class MemberAccessorExpression;
class Statement;
class Struct;
class StructMember;
class Type;
class TypeDecl;
class Variable;
} // namespace ast
namespace sem {
// Forward declarations
class Array;
class Call;
class Expression;
class Function;
class MemberAccessorExpression;
class Statement;
class Struct;
class StructMember;
class Type;
class Variable;
/// TypeMappings is a struct that holds undefined `operator()` methods that's
/// used by SemanticNodeTypeFor to map AST / type node types to their
/// corresponding semantic node types. The standard operator overload resolving
/// rules will be used to infer the return type based on the argument type.
struct TypeMappings {
//! @cond Doxygen_Suppress
Call* operator()(ast::CallExpression*);
Expression* operator()(ast::Expression*);
Function* operator()(ast::Function*);
MemberAccessorExpression* operator()(ast::MemberAccessorExpression*);
Statement* operator()(ast::Statement*);
StructMember* operator()(ast::StructMember*);
Type* operator()(ast::Type*);
Type* operator()(ast::TypeDecl*);
Struct* operator()(ast::Struct*);
Variable* operator()(ast::Variable*);
//! @endcond
};
/// SemanticNodeTypeFor resolves to the appropriate sem::Node type for the
/// AST or type node `AST_OR_TYPE`.
template <typename AST_OR_TYPE>
using SemanticNodeTypeFor = typename std::remove_pointer<decltype(
TypeMappings()(std::declval<AST_OR_TYPE*>()))>::type;
} // namespace sem
} // namespace tint
#endif // SRC_SEM_TYPE_MAPPINGS_H_