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/***** BEGIN LICENSE BLOCK *****
 * Version: EPL 1.0/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Eclipse Public
 * License Version 1.0 (the "License"); you may not use this file
 * except in compliance with the License. You may obtain a copy of
 * the License at http://www.eclipse.org/legal/epl-v10.html
 *
 * Software distributed under the License is distributed on an "AS
 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
 * implied. See the License for the specific language governing
 * rights and limitations under the License.
 *
 * Copyright (C) 2008 Thomas E Enebo 
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either of the GNU General Public License Version 2 or later (the "GPL"),
 * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the EPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the EPL, the GPL or the LGPL.
 ***** END LICENSE BLOCK *****/
package org.jruby.ast;

import java.util.List;
import org.jruby.Ruby;
import org.jruby.ast.types.INameNode;
import org.jruby.ast.visitor.NodeVisitor;
import org.jruby.lexer.yacc.ISourcePosition;
import org.jruby.runtime.Block;
import org.jruby.runtime.ThreadContext;
import org.jruby.runtime.builtin.IRubyObject;

/**
 *
 * @author enebo
 */
public class OptArgNode extends Node implements INameNode {
    private Node value;

    public OptArgNode(ISourcePosition position, Node value) {
        super(position);
        this.value = value;
    }

    public NodeType getNodeType() {
        return NodeType.OPTARGNODE;
    }

    public Node getValue() {
        return value;
    }

    @Override
    public IRubyObject interpret(Ruby runtime, ThreadContext context, IRubyObject self, Block aBlock) {
        return value.interpret(runtime, context, self, aBlock);
    }

    @Override
    public IRubyObject assign(Ruby runtime, ThreadContext context, IRubyObject self, IRubyObject assignValue, Block block, boolean checkArity) {
        return value.assign(runtime, context, self, assignValue, block, checkArity);
    }

    @Override
    public Object accept(NodeVisitor visitor) {
        return visitor.visitOptArgNode(this);
    }

    @Override
    public List childNodes() {
        return Node.createList(value);
    }

    public String getName() {
        if (value instanceof INameNode) {
            return ((INameNode)value).getName();
        }
        return null;
    }

}