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// Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

package com.google.dart.compiler.backend.js.ast;

/**
 * Represents a JavaScript if statement.
 */
public final class JsIf extends SourceInfoAwareJsNode implements JsStatement {
    private JsExpression ifExpression;
    private JsStatement thenStatement;
    private JsStatement elseStatement;

    public JsIf() {
    }

    public JsIf(JsExpression ifExpression, JsStatement thenStatement, JsStatement elseStatement) {
        this.ifExpression = ifExpression;
        this.thenStatement = thenStatement;
        this.elseStatement = elseStatement;
    }

    public JsIf(JsExpression ifExpression, JsStatement thenStatement) {
        this.ifExpression = ifExpression;
        this.thenStatement = thenStatement;
    }

    public JsStatement getElseStatement() {
        return elseStatement;
    }

    public JsExpression getIfExpression() {
        return ifExpression;
    }

    public JsStatement getThenStatement() {
        return thenStatement;
    }

    public void setElseStatement(JsStatement elseStatement) {
        this.elseStatement = elseStatement;
    }

    public void setIfExpression(JsExpression ifExpression) {
        this.ifExpression = ifExpression;
    }

    public void setThenStatement(JsStatement thenStatement) {
        this.thenStatement = thenStatement;
    }

    @Override
    public void accept(JsVisitor v) {
        v.visitIf(this);
    }

    @Override
    public void acceptChildren(JsVisitor visitor) {
        visitor.accept(ifExpression);
        visitor.accept(thenStatement);
        if (elseStatement != null) {
            visitor.accept(elseStatement);
        }
    }
}