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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_IF_STATEMENT_H_
#define SRC_SEM_IF_STATEMENT_H_
#include "src/sem/statement.h"
// Forward declarations
namespace tint {
namespace ast {
class IfStatement;
class ElseStatement;
} // namespace ast
namespace sem {
class Expression;
} // namespace sem
} // namespace tint
namespace tint {
namespace sem {
/// Holds semantic information about an if statement
class IfStatement : public Castable<IfStatement, CompoundStatement> {
public:
/// Constructor
/// @param declaration the AST node for this if statement
/// @param parent the owning statement
/// @param function the owning function
IfStatement(const ast::IfStatement* declaration,
const CompoundStatement* parent,
const sem::Function* function);
/// Destructor
~IfStatement() override;
/// @returns the AST node
const ast::IfStatement* Declaration() const;
/// @returns the if-statement condition expression
const Expression* Condition() const { return condition_; }
/// Sets the if-statement condition expression
/// @param condition the if condition expression
void SetCondition(const Expression* condition) { condition_ = condition; }
private:
const Expression* condition_ = nullptr;
};
/// Holds semantic information about an else statement
class ElseStatement : public Castable<ElseStatement, CompoundStatement> {
public:
/// Constructor
/// @param declaration the AST node for this else statement
/// @param parent the owning statement
/// @param function the owning function
ElseStatement(const ast::ElseStatement* declaration,
const IfStatement* parent,
const sem::Function* function);
/// Destructor
~ElseStatement() override;
/// @returns the else-statement condition expression
const Expression* Condition() const { return condition_; }
/// @return the statement that encloses this statement
const IfStatement* Parent() const {
return static_cast<const IfStatement*>(Statement::Parent());
}
/// Sets the else-statement condition expression
/// @param condition the else condition expression
void SetCondition(const Expression* condition) { condition_ = condition; }
private:
const Expression* condition_ = nullptr;
};
} // namespace sem
} // namespace tint
#endif // SRC_SEM_IF_STATEMENT_H_