/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.apache.sysml.parser;

import org.apache.sysml.runtime.util.UtilFunctions;



public class DoubleIdentifier extends ConstIdentifier 
{
	
	private double _val;
	
	
	public DoubleIdentifier(double val, String filename, int blp, int bcp, int elp, int ecp){
		super();
		 _val = val;
		_kind = Kind.Data;
		this.setDimensions(0,0);
        this.computeDataType();
        this.setValueType(ValueType.DOUBLE);
        this.setAllPositions(filename, blp, bcp, elp, ecp);
	}
	
	public DoubleIdentifier(DoubleIdentifier d, String filename, int blp, int bcp, int elp, int ecp){
		super();
		 _val = d.getValue();
		_kind = Kind.Data;
		this.setDimensions(0,0);
        this.computeDataType();
        this.setValueType(ValueType.DOUBLE);
        this.setAllPositions(filename, blp, bcp, elp, ecp);
	}
	
	public Expression rewriteExpression(String prefix) throws LanguageException{
		return this;
	}
	
	// Used only by the parser for unary operation
	public void multiplyByMinusOne() {
		_val = -1 * _val;
	}
	
	public double getValue(){
		return _val;
	}
	
	public void setValue(double v) {
		_val = v;
	}
	
	public String toString(){
		return Double.toString(_val);
	}
	
	@Override
	public VariableSet variablesRead() {
		return null;
	}

	@Override
	public VariableSet variablesUpdated() {
		return null;
	}
	
	@Override
	public long getLongValue() {
		return UtilFunctions.toLong(getValue());
	}
}