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// Copyright 2020 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_AST_UNARY_OP_EXPRESSION_H_
#define SRC_AST_UNARY_OP_EXPRESSION_H_
#include <memory>
#include <utility>
#include "src/ast/expression.h"
#include "src/ast/literal.h"
#include "src/ast/unary_op.h"
namespace tint {
namespace ast {
/// A unary op expression
class UnaryOpExpression : public Expression {
public:
/// Constructor
UnaryOpExpression();
/// Constructor
/// @param op the op
/// @param expr the expr
UnaryOpExpression(UnaryOp op, std::unique_ptr<Expression> expr);
/// Constructor
/// @param source the unary op expression source
/// @param op the op
/// @param expr the expr
UnaryOpExpression(const Source& source,
UnaryOp op,
std::unique_ptr<Expression> expr);
/// Move constructor
UnaryOpExpression(UnaryOpExpression&&);
~UnaryOpExpression() override;
/// Sets the op
/// @param op the op
void set_op(UnaryOp op) { op_ = op; }
/// @returns the op
UnaryOp op() const { return op_; }
/// Sets the expr
/// @param expr the expression
void set_expr(std::unique_ptr<Expression> expr) { expr_ = std::move(expr); }
/// @returns the expression
Expression* expr() const { return expr_.get(); }
/// @returns true if this is an as expression
bool IsUnaryOp() const override;
/// @returns true if the node is valid
bool IsValid() const override;
/// Writes a representation of the node to the output stream
/// @param out the stream to write to
/// @param indent number of spaces to indent the node when writing
void to_str(std::ostream& out, size_t indent) const override;
private:
UnaryOpExpression(const UnaryOpExpression&) = delete;
UnaryOp op_ = UnaryOp::kNegation;
std::unique_ptr<Expression> expr_;
};
} // namespace ast
} // namespace tint
#endif // SRC_AST_UNARY_OP_EXPRESSION_H_