| /* |
| * Copyright 2008 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.js.ast; |
| |
| import com.google.gwt.dev.jjs.SourceInfo; |
| |
| /** |
| * Represents a JavaScript conditional expression. |
| */ |
| public final class JsConditional extends JsExpression { |
| |
| private JsExpression elseExpr; |
| |
| private JsExpression testExpr; |
| |
| private JsExpression thenExpr; |
| |
| public JsConditional(SourceInfo sourceInfo) { |
| super(sourceInfo); |
| } |
| |
| public JsConditional(SourceInfo sourceInfo, JsExpression testExpr, |
| JsExpression thenExpr, JsExpression elseExpr) { |
| super(sourceInfo); |
| this.testExpr = testExpr; |
| this.thenExpr = thenExpr; |
| this.elseExpr = elseExpr; |
| } |
| |
| public JsExpression getElseExpression() { |
| return elseExpr; |
| } |
| |
| public JsExpression getTestExpression() { |
| return testExpr; |
| } |
| |
| public JsExpression getThenExpression() { |
| return thenExpr; |
| } |
| |
| @Override |
| public boolean hasSideEffects() { |
| return testExpr.hasSideEffects() || thenExpr.hasSideEffects() |
| || elseExpr.hasSideEffects(); |
| } |
| |
| @Override |
| public boolean isDefinitelyNotNull() { |
| return thenExpr.isDefinitelyNotNull() && elseExpr.isDefinitelyNotNull(); |
| } |
| |
| @Override |
| public boolean isDefinitelyNull() { |
| return thenExpr.isDefinitelyNull() && elseExpr.isDefinitelyNull(); |
| } |
| |
| public void setElseExpression(JsExpression elseExpr) { |
| this.elseExpr = elseExpr; |
| } |
| |
| public void setTestExpression(JsExpression testExpr) { |
| this.testExpr = testExpr; |
| } |
| |
| public void setThenExpression(JsExpression thenExpr) { |
| this.thenExpr = thenExpr; |
| } |
| |
| public void traverse(JsVisitor v, JsContext ctx) { |
| if (v.visit(this, ctx)) { |
| testExpr = v.accept(testExpr); |
| thenExpr = v.accept(thenExpr); |
| elseExpr = v.accept(elseExpr); |
| } |
| v.endVisit(this, ctx); |
| } |
| } |