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/*
 * Copyright (C) 2007-2010 Júlio Vilmar Gesser.
 * Copyright (C) 2011, 2013-2016 The JavaParser Team.
 *
 * This file is part of JavaParser.
 * 
 * JavaParser can be used either under the terms of
 * a) the GNU Lesser General Public License as published by
 *     the Free Software Foundation, either version 3 of the License, or
 *     (at your option) any later version.
 * b) the terms of the Apache License 
 *
 * You should have received a copy of both licenses in LICENCE.LGPL and
 * LICENCE.APACHE. Please refer to those files for details.
 *
 * JavaParser is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 */
 
package com.github.javaparser.ast.stmt;

import com.github.javaparser.Range;
import com.github.javaparser.ast.expr.BooleanLiteralExpr;
import com.github.javaparser.ast.expr.Expression;
import com.github.javaparser.ast.nodeTypes.NodeWithExpression;
import com.github.javaparser.ast.observing.ObservableProperty;
import com.github.javaparser.ast.visitor.GenericVisitor;
import com.github.javaparser.ast.visitor.VoidVisitor;

import static com.github.javaparser.utils.Utils.assertNotNull;

/**
 * @author Julio Vilmar Gesser
 */
public final class ExpressionStmt extends Statement implements
        NodeWithExpression<ExpressionStmt> {

	private Expression expression;

	public ExpressionStmt() {
        this(null, new BooleanLiteralExpr());
	}

	public ExpressionStmt(final Expression expression) {
		this(null, expression);
	}

	public ExpressionStmt(Range range, final Expression expression) {
		super(range);
		setExpression(expression);
	}

	@Override public <R, A> R accept(final GenericVisitor<R, A> v, final A arg) {
		return v.visit(this, arg);
	}

	@Override public <A> void accept(final VoidVisitor<A> v, final A arg) {
		v.visit(this, arg);
	}

	@Override
	public Expression getExpression() {
		return expression;
	}

	@Override
	public ExpressionStmt setExpression(final Expression expression) {
		notifyPropertyChange(ObservableProperty.EXPRESSION, this.expression, expression);
		this.expression = assertNotNull(expression);
		setAsParentNodeOf(this.expression);
		return this;
	}
}