| /* |
| * Copyright 2009 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; |
| |
| import com.google.gwt.dev.jjs.SourceOrigin; |
| import com.google.gwt.dev.js.ast.JsProgram; |
| import com.google.gwt.dev.js.ast.JsStatement; |
| import com.google.gwt.dev.js.ast.JsVisitor; |
| import com.google.gwt.dev.util.DefaultTextOutput; |
| import com.google.gwt.dev.util.TextOutput; |
| |
| import junit.framework.TestCase; |
| |
| import java.io.StringReader; |
| import java.lang.reflect.Method; |
| import java.util.List; |
| |
| /** |
| * A utility base type for writing tests for JS optimizers. |
| */ |
| public abstract class OptimizerTestBase extends TestCase { |
| |
| /** |
| * Optimize a JS program. |
| * |
| * @param js the source program |
| * @param toExec a list of classes that implement |
| * <code>static void exec(JsProgram)</code> |
| * @return optimized JS source |
| */ |
| protected String optimizeToSource(String js, Class<?>... toExec) throws Exception { |
| JsProgram program = optimize(js, toExec); |
| |
| TextOutput text = new DefaultTextOutput(true); |
| JsVisitor generator = new JsSourceGenerationVisitor(text); |
| |
| generator.accept(program); |
| return text.toString(); |
| } |
| |
| /** |
| * Optimize a JS program. |
| * |
| * @param js the source program |
| * @param toExec a list of classes that implement |
| * <code>static void exec(JsProgram)</code> |
| * @return optimized JS program |
| */ |
| protected JsProgram optimize(String js, Class<?>... toExec) throws Exception { |
| JsProgram program = new JsProgram(); |
| List<JsStatement> expected = JsParser.parse(SourceOrigin.UNKNOWN, |
| program.getScope(), new StringReader(js)); |
| |
| program.getGlobalBlock().getStatements().addAll(expected); |
| |
| for (Class<?> clazz : toExec) { |
| Method m = clazz.getMethod("exec", JsProgram.class); |
| m.invoke(null, program); |
| } |
| |
| return program; |
| } |
| |
| } |