/*

 * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code 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 General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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package jdk.nashorn.internal.ir;

import jdk.nashorn.internal.codegen.Label;

import jdk.nashorn.internal.ir.annotations.Immutable;

import jdk.nashorn.internal.ir.visitor.NodeVisitor;

/**

 * IR representation for {@code break} statements.

 */

@Immutable

public final class BreakNode extends JumpStatement {

    private static final long serialVersionUID = 1L;

    /**

     * Constructor

     *

     * @param lineNumber line number

     * @param token      token

     * @param finish     finish

     * @param labelName  label name for break or null if none

     */

    public BreakNode(final int lineNumber, final long token, final int finish, final String labelName) {

        super(lineNumber, token, finish, labelName);

    }

    private BreakNode(final BreakNode breakNode, final LocalVariableConversion conversion) {

        super(breakNode, conversion);

    }

    @Override

    public Node accept(final NodeVisitor<? extends LexicalContext> visitor) {

        if (visitor.enterBreakNode(this)) {

            return visitor.leaveBreakNode(this);

        }

        return this;

    }

    @Override

    JumpStatement createNewJumpStatement(final LocalVariableConversion conversion) {

        return new BreakNode(this, conversion);

    }

    @Override

    String getStatementName() {

        return "break";

    }

    @Override

    public BreakableNode getTarget(final LexicalContext lc) {

        return lc.getBreakable(getLabelName());

    }

    @Override

        return target.getBreakLabel();

    }

}