| /******************************************************************************* |
| * Copyright (c) 2000, 2008 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.wst.jsdt.internal.compiler.ast; |
| |
| import org.eclipse.wst.jsdt.core.ast.IASTNode; |
| import org.eclipse.wst.jsdt.core.ast.INullLiteral; |
| import org.eclipse.wst.jsdt.internal.compiler.ASTVisitor; |
| import org.eclipse.wst.jsdt.internal.compiler.flow.FlowInfo; |
| import org.eclipse.wst.jsdt.internal.compiler.impl.Constant; |
| import org.eclipse.wst.jsdt.internal.compiler.lookup.BlockScope; |
| import org.eclipse.wst.jsdt.internal.compiler.lookup.TypeBinding; |
| |
| public class NullLiteral extends MagicLiteral implements INullLiteral { |
| |
| static final char[] source = {'n' , 'u' , 'l' , 'l'}; |
| |
| public NullLiteral(int s , int e) { |
| |
| super(s,e); |
| } |
| |
| public void computeConstant() { |
| |
| constant = Constant.NotAConstant; |
| } |
| |
| public TypeBinding literalType(BlockScope scope) { |
| return TypeBinding.NULL; |
| } |
| |
| public int nullStatus(FlowInfo flowInfo) { |
| return FlowInfo.NULL; |
| } |
| |
| public Object reusableJSRTarget() { |
| return TypeBinding.NULL; |
| } |
| |
| public char[] source() { |
| return source; |
| } |
| |
| public void traverse(ASTVisitor visitor, BlockScope scope) { |
| visitor.visit(this, scope); |
| visitor.endVisit(this, scope); |
| } |
| public int getASTType() { |
| return IASTNode.NULL_LITERAL; |
| |
| } |
| } |