| /* |
| * Copyright 2007 Google Inc. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); you may not |
| * use this file except in compliance with the License. You may obtain a copy of |
| * the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
| * License for the specific language governing permissions and limitations under |
| * the License. |
| */ |
| package com.google.gwt.dev.jjs.ast; |
| |
| import com.google.gwt.dev.jjs.SourceInfo; |
| |
| /** |
| * Java instance of expression. |
| */ |
| public class JInstanceOf extends JExpression { |
| |
| private JExpression expr; |
| private JReferenceType testType; |
| |
| public JInstanceOf(SourceInfo info, JReferenceType testType, JExpression expression) { |
| super(info); |
| this.testType = testType; |
| this.expr = expression; |
| } |
| |
| public JExpression getExpr() { |
| return expr; |
| } |
| |
| public JReferenceType getTestType() { |
| return testType; |
| } |
| |
| public JType getType() { |
| return JPrimitiveType.BOOLEAN; |
| } |
| |
| @Override |
| public boolean hasSideEffects() { |
| return false; |
| } |
| |
| /** |
| * Resolve an external reference during AST stitching. |
| */ |
| public void resolve(JReferenceType newType) { |
| assert newType.replaces(testType); |
| testType = newType; |
| } |
| |
| public void traverse(JVisitor visitor, Context ctx) { |
| if (visitor.visit(this, ctx)) { |
| expr = visitor.accept(expr); |
| } |
| visitor.endVisit(this, ctx); |
| } |
| |
| } |