/**
 *
 * 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 java.util.ArrayList;
import java.util.Iterator;

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

/**
 * Literal String
 *
 */
public final class LStringBuffer extends RefSupport implements Literal {
    
    private ArrayList refs=new ArrayList();
    private StringBuffer sb=new StringBuffer();

    /**
     * constructor of the class
     * @param str 
     */
    public LStringBuffer(String str) {
        sb.append(str);
    }
    /**
     * constructor of the class
     * @param str 
     */
    public LStringBuffer() {
    }
    

    @Override
	public Object getValue(PageContext pc) throws PageException {
        if(refs.size()==0) return sb.toString();
        
        StringBuffer tmp=new StringBuffer();
        Iterator it = refs.iterator();
        while(it.hasNext()) {
            tmp.append(Caster.toString(((Ref)it.next()).getValue(pc)));
        }
        if(sb.length()>0)tmp.append(sb);
        
        
        return tmp.toString();
    } 
    
    public void append(Ref ref) {
        if(sb.length()>0) {
            refs.add(new LString(sb.toString()));
            sb=new StringBuffer();
        }
        refs.add(ref);
    }

    public void append(char c) {
        sb.append(c);
    }
    public void append(String str) {
        sb.append(str);
    }
    
    public boolean isEmpty() {
        return sb.length()+refs.size()==0;
    }

    @Override
    public String getTypeName() {
        return "literal";
    }
    
    @Override
    public String getString(PageContext pc) throws PageException {
        return (String) getValue(pc);
    }

    @Override
    public boolean eeq(PageContext pc,Ref other) throws PageException {
		return RefUtil.eeq(pc,this,other);
	}
}