/*
 * Copyright (c) 2014, 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.CompilerConstants;
import jdk.nashorn.internal.codegen.types.Type;
import jdk.nashorn.internal.ir.visitor.NodeVisitor;
import jdk.nashorn.internal.runtime.Scope;

Synthetic AST node that represents loading of the scope object and invocation of the Scope.getSplitState() method on it. It has no JavaScript source representation and only occurs in synthetic functions created by the split-into-functions transformation. /**
 * Synthetic AST node that represents loading of the scope object and invocation of the {@link Scope#getSplitState()}
 * method on it. It has no JavaScript source representation and only occurs in synthetic functions created by
 * the split-into-functions transformation.
 */
public final class GetSplitState extends Expression {
    private static final long serialVersionUID = 1L;

    
The sole instance of this AST node. /** The sole instance of this AST node. */
    public final static GetSplitState INSTANCE = new GetSplitState();

    private GetSplitState() {
        super(NO_TOKEN, NO_FINISH);
    }

    @Override
    public Type getType() {
        return Type.INT;
    }

    @Override
    public Node accept(final NodeVisitor<? extends LexicalContext> visitor) {
        return visitor.enterGetSplitState(this) ? visitor.leaveGetSplitState(this) : this;
    }

    @Override
    public void toString(final StringBuilder sb, final boolean printType) {
        if (printType) {
            sb.append("{I}");
        }
        sb.append(CompilerConstants.SCOPE.symbolName()).append('.').append(Scope.GET_SPLIT_STATE.name()).append("()");
    }

    private Object readResolve() {
        return INSTANCE;
    }
}