/**
 *
 * Copyright (c) 2014, the Railo Company Ltd. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either 
 * version 2.1 of the License, or (at your option) any later version.
 * 
 * This library 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
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public 
 * License along with this library.  If not, see <http://www.gnu.org/licenses/>.
 * 
 **/
package lucee.runtime.interpreter.ref.literal;

import lucee.runtime.PageContext;
import lucee.runtime.exp.PageException;
import lucee.runtime.interpreter.ref.Ref;
import lucee.runtime.interpreter.ref.util.RefUtil;
import lucee.runtime.op.Caster;

/**
 * Literal Number
 */
public final class LNumber implements Literal {

    public static final LNumber ZERO = new LNumber(new Double(0));
    public static final LNumber ONE = new LNumber(new Double(1));
    
    
    
	private Object literal;

    /**
     * constructor of the class
     * @param literal
     */
    public LNumber(Double literal) {
        this.literal=literal;
    }

    /**
     * constructor of the class
     * @param literal
     * @throws PageException 
     */
    public LNumber(String literal) throws PageException {
        this.literal=Caster.toDouble(literal);
        // in theory this filter (>10) makes not really sense, just better for performance!!!
        if(literal.length()>10) {
        	if(!Caster.toString(this.literal).equals(literal))
        		this.literal=literal;
        }
    }
    
    @Override
	public Object getValue(PageContext pc) {
        return literal;
    }
    
    @Override
	public Object getCollection(PageContext pc) {
        return getValue(pc);
    }

    @Override
    public String getTypeName() {
        return "number";
    }
    
    @Override
    public Object touchValue(PageContext pc) {
        return getValue(pc);
    }

    @Override
    public String getString(PageContext pc) {
        return toString();
    }

    @Override
    public String toString() {
        return literal instanceof String?(String)literal:Caster.toString((Double)literal);
    }

    @Override
	public boolean eeq(PageContext pc,Ref other) throws PageException {
		if(other instanceof LNumber){
			if(literal instanceof Double) {
				// Double|Double
				if(((LNumber)other).literal instanceof Double) {
					return ((Double)literal).doubleValue()==((Double)((LNumber)other).literal).doubleValue();
				}
				// Double|String
				return Caster.toString(((Double)literal).doubleValue()).equals(((LNumber)other).literal);
			}
			// String|Double
			if(((LNumber)other).literal instanceof Double) {
				return ((String)literal).equals(Caster.toString(((Double)((LNumber)other).literal).doubleValue()));
			}
			// String|String
			return ((String)literal).equals((((LNumber)other).literal));
			
		}
		return RefUtil.eeq(pc,this,other);
	}
}