| /* |
| * Copyright 2015 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.impl; |
| |
| import com.google.gwt.core.ext.TreeLogger; |
| import com.google.gwt.dev.jjs.ast.JMethod; |
| import com.google.gwt.dev.jjs.ast.JProgram; |
| |
| /** |
| * Test for {@link ImplementCastsAndTypeChecksTest}. |
| */ |
| public class ImplementCastsAndTypeChecksTest extends OptimizerTestBase { |
| // TODO(rluble): add unit test for the rest of the functionality. |
| |
| public void testCastCheckIntoNullCheck() throws Exception { |
| addSnippetClassDecl("static class A { String name; public void set() { name = \"A\";} }"); |
| |
| Result result = |
| optimize("void", "A a = new A(); a = null; if (a instanceof A) {}"); |
| result.intoString( |
| "EntryPoint$A a = new EntryPoint$A();", |
| "a = null;", |
| "if (a != null) {", |
| "}"); |
| } |
| |
| public void testRemoveCastCheck_exactType() throws Exception { |
| addSnippetClassDecl("static class A { String name; public void set() { name = \"A\";} }"); |
| |
| Result result = |
| optimize("void", "A a = new A(); if (a instanceof A) {}"); |
| result.intoString( |
| "EntryPoint$A a = new EntryPoint$A();", |
| "if (a != null) {", |
| "}"); |
| } |
| |
| @Override |
| protected boolean doOptimizeMethod(TreeLogger logger, JProgram program, JMethod method) { |
| program.addEntryMethod(findMainMethod(program)); |
| boolean didChange = true; |
| |
| do { |
| didChange &= TypeTightener.exec(program).didChange(); |
| didChange &= MethodCallTightener.exec(program).didChange(); |
| } while (didChange); |
| ImplementCastsAndTypeChecks.exec(program); |
| return true; |
| } |
| } |