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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) 2002 Jan Arne Petersen 
 * Copyright (C) 2002 Benoit Cerrina 
 * Copyright (C) 2002-2004 Anders Bengtsson 
 * Copyright (C) 2004 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.truffle.parser.ast;

import org.jruby.truffle.language.SourceIndexLength;
import org.jruby.truffle.parser.ast.visitor.NodeVisitor;

import java.util.List;

/** Represents an operator assignment to an element.
 * 
 * This could be for example:
 * 
 *  * a[4] += 5
 * a[3] &&= true
 * 
 */
public class OpElementAsgnParseNode extends ParseNode {
    private final ParseNode receiverNode;
    private final ParseNode argsNode;
    private final ParseNode valueNode;
    private final String operatorName;

    public OpElementAsgnParseNode(SourceIndexLength position, ParseNode receiverNode, String operatorName, ParseNode argsNode, ParseNode valueNode) {
        super(position, receiverNode.containsVariableAssignment() || argsNode != null && argsNode.containsVariableAssignment() || valueNode.containsVariableAssignment());

        assert receiverNode != null : "receiverNode is not null";
        assert valueNode != null : "valueNode is not null";

        this.receiverNode = receiverNode;
        this.argsNode = argsNode;
        this.valueNode = valueNode;
        this.operatorName = operatorName;
    }

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

    /**
     * Accept for the visitor pattern.
     * @param iVisitor the visitor
     **/
    public  T accept(NodeVisitor iVisitor) {
        return iVisitor.visitOpElementAsgnNode(this);
    }

    /**
     * Gets the argsNode.
     * @return Returns a ParseNode
     */
    public ParseNode getArgsNode() {
        return argsNode;
    }

    /**
     * Gets the operatorName.
     * @return Returns a String
     */
    public String getOperatorName() {
        return operatorName;
    }

    /**
     * Gets the receiverNode.
     * @return Returns a ParseNode
     */
    public ParseNode getReceiverNode() {
        return receiverNode;
    }

    public boolean isOr() {
        return getOperatorName() == "||";
    }

    public boolean isAnd() {
        return getOperatorName() == "&&";
    }

    /**
     * Gets the valueNode.
     * @return Returns a ParseNode
     */
    public ParseNode getValueNode() {
        return valueNode;
    }

    public List childNodes() {
        return ParseNode.createList(receiverNode, argsNode, valueNode);
    }

    @Override
    public boolean needsDefinitionCheck() {
        return false;
    }
}