/*

 * Copyright (c) 2015, 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,

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 *

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package jdk.nashorn.internal.ir;

import java.util.Objects;

import jdk.nashorn.internal.codegen.Label;

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

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

/**

 * IR representation for synthetic jump into an inlined finally statement.

 */

@Immutable

public final class JumpToInlinedFinally extends JumpStatement {

    private static final long serialVersionUID = 1L;

    /**

     * Constructor

     *

     * @param labelName  label name for inlined finally block

     */

    public JumpToInlinedFinally(final String labelName) {

        super(NO_LINE_NUMBER, NO_TOKEN, NO_FINISH, Objects.requireNonNull(labelName));

    }

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

        super(breakNode, conversion);

    }

    @Override

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

        if (visitor.enterJumpToInlinedFinally(this)) {

            return visitor.leaveJumpToInlinedFinally(this);

        }

        return this;

    }

    @Override

    JumpStatement createNewJumpStatement(final LocalVariableConversion conversion) {

        return new JumpToInlinedFinally(this, conversion);

    }

    @Override

    String getStatementName() {

        return ":jumpToInlinedFinally";

    }

    @Override

    public Block getTarget(final LexicalContext lc) {

        return lc.getInlinedFinally(getLabelName());

    }

    @Override

    public TryNode getPopScopeLimit(final LexicalContext lc) {

        // Returns the try node to which this jump's target belongs. This will make scope popping also pop the scope

        // for the body of the try block, if it needs scope.

        return lc.getTryNodeForInlinedFinally(getLabelName());

    }

    @Override

    Label getTargetLabel(final BreakableNode target) {

        assert target != null;

        // We're jumping to the entry of the inlined finally block

        return ((Block)target).getEntryLabel();

    }

}