StringLiteralEvaluator.java

package com.drawbridge.jsengine.ast;

import java.util.LinkedList;

import com.drawbridge.jsengine.Scope;
import com.drawbridge.jsengine.jsobjects.JSString;
import com.drawbridge.jsengine.jsobjects.JSType;
import com.drawbridge.vl.blocks.BlockPrimitive;
import com.google.caja.parser.js.StringLiteral;

public class StringLiteralEvaluator extends Evaluator
{

	String	stringValue;

	public StringLiteralEvaluator(Evaluator parent, Scope scope, StringLiteral stringLiteral) {
		super(parent, scope, stringLiteral.getFilePosition());
		stringValue = StringLiteral.getUnquotedValueOf(stringLiteral.getValue());

	}

	@Override
	public JSType evaluate() throws EvaluatorException
	{
		return new JSString(stringValue);
	}

	public static boolean hasQuotes(String string)
	{
		return (string.substring(0, 1).equals("\"") && string.substring(string.length() - 1, string.length()).equals("\""));
	}

	public void putChange(String string)
	{
		stringValue = string;
	}

	public Object getJS()
	{
		return stringValue;
	}

	@Override
	public LinkedList<com.drawbridge.vl.blocks.Block> getBlocks()
	{
		LinkedList<com.drawbridge.vl.blocks.Block> results = new LinkedList<com.drawbridge.vl.blocks.Block>();
		results.add(new BlockPrimitive(getFilePosition(), this, stringValue));
		return results;
	}

	@Override
	public boolean compare(Evaluator e)
	{

		if (!e.getClass().equals(getClass()))
			return false;

		if (mChildren.size() != e.mChildren.size())
			return false;
		StringLiteralEvaluator sle = (StringLiteralEvaluator) e;

		if (sle.stringValue.equals(stringValue) && e.getFilePosition().equals(getFilePosition()))
			return true;
		else
			return false;
	}

}