/*******************************************************************************
 * Copyright (c) 2000, 2003 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials 
 * are made available under the terms of the Common Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/cpl-v10.html
 * 
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package net.sourceforge.phpeclipse.internal.compiler.ast;

import net.sourceforge.phpdt.internal.compiler.flow.FlowContext;
import net.sourceforge.phpdt.internal.compiler.flow.FlowInfo;
import net.sourceforge.phpdt.internal.compiler.impl.Constant;
import net.sourceforge.phpdt.internal.compiler.lookup.BlockScope;
import net.sourceforge.phpdt.internal.compiler.lookup.TypeBinding;


public abstract class Literal extends Expression {
	
public Literal(int s,int e) {
	sourceStart = s ;
	sourceEnd= e;
}

public FlowInfo analyseCode(BlockScope currentScope, FlowContext flowContext, FlowInfo flowInfo) {
	return flowInfo;
}

public abstract void computeConstant() ;
	//ON ERROR constant STAYS NULL
public abstract TypeBinding literalType(BlockScope scope);
public StringBuffer printExpression(int indent, StringBuffer output){
	
		return output.append(source());
	 }
public TypeBinding resolveType(BlockScope scope) {
	// compute the real value, which must range its type's range

	computeConstant();
	if (constant == null) {
		scope.problemReporter().constantOutOfRange(this);
		constant = Constant.NotAConstant;
		return null;
	}
	this.resolvedType = literalType(scope);
	return this.resolvedType;
}
public abstract char[] source() ;
}