| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 org.netbeans.lib.nbjavac.services; |
| |
| import com.sun.source.tree.CompilationUnitTree; |
| import com.sun.source.tree.MethodTree; |
| import com.sun.source.tree.Scope; |
| import com.sun.source.util.JavacTask; |
| import com.sun.source.util.TreePath; |
| import com.sun.source.util.TreePathScanner; |
| import com.sun.source.util.Trees; |
| import com.sun.tools.javac.api.JavacTaskImpl; |
| import com.sun.tools.javac.api.JavacTool; |
| import com.sun.tools.javac.code.Flags; |
| import com.sun.tools.javac.code.Symbol; |
| import com.sun.tools.javac.util.Context; |
| import java.io.File; |
| import java.net.URI; |
| import java.util.Arrays; |
| import java.util.Collections; |
| import java.util.HashSet; |
| import java.util.Set; |
| import javax.lang.model.element.Element; |
| import javax.tools.JavaCompiler; |
| import javax.tools.JavaFileObject; |
| import javax.tools.SimpleJavaFileObject; |
| import javax.tools.StandardJavaFileManager; |
| import javax.tools.StandardLocation; |
| import javax.tools.ToolProvider; |
| import org.netbeans.junit.NbTestCase; |
| |
| import static org.netbeans.lib.nbjavac.services.Utilities.DEV_NULL; |
| import org.openide.util.Pair; |
| |
| /** |
| * |
| * @author lahvac |
| */ |
| public class NBJavacTreesTest extends NbTestCase { |
| |
| public NBJavacTreesTest(String testName) { |
| super(testName); |
| } |
| |
| public void testEffectivellyFinalVariablesPreserved() throws Exception { |
| String code = "package test; public class Test { void t() { int i = 0; int j = 0; t(); j = 1; } }"; |
| Pair<JavacTask, CompilationUnitTree> parsed = compile(code); |
| |
| new TreePathScanner<Void, Void>() { |
| @Override |
| public Void visitMethod(MethodTree node, Void p) { |
| if (node.getName().contentEquals("t")) { |
| TreePath scopePath = new TreePath(new TreePath(getCurrentPath(), node.getBody()), node.getBody().getStatements().get(2)); |
| Scope scope = Trees.instance(parsed.first()).getScope(scopePath); |
| Set<String> elements = new HashSet<>(); |
| scope.getLocalElements().forEach(e -> { |
| elements.add(e.getSimpleName().toString() + effectivellyFinal(e)); |
| }); |
| } |
| return super.visitMethod(node, p); |
| } |
| }.scan(parsed.second(), null); |
| } |
| |
| private static boolean effectivellyFinal(Element el) { |
| return (((Symbol) el).flags_field & Flags.EFFECTIVELY_FINAL) != 0; |
| } |
| |
| //<editor-fold defaultstate="collapsed" desc=" Test Infrastructure "> |
| private static class MyFileObject extends SimpleJavaFileObject { |
| private String text; |
| |
| public MyFileObject(String text) { |
| super(URI.create("myfo:/Test.java"), JavaFileObject.Kind.SOURCE); |
| this.text = text; |
| } |
| |
| @Override |
| public CharSequence getCharContent(boolean ignoreEncodingErrors) { |
| return text; |
| } |
| } |
| |
| private File workingDir; |
| |
| @Override |
| protected void setUp() throws Exception { |
| workingDir = getWorkDir(); |
| } |
| |
| private Pair<JavacTask, CompilationUnitTree> compile(String code) throws Exception { |
| final JavaCompiler tool = ToolProvider.getSystemJavaCompiler(); |
| assert tool != null; |
| |
| StandardJavaFileManager std = tool.getStandardFileManager(null, null, null); |
| |
| std.setLocation(StandardLocation.CLASS_OUTPUT, Collections.singleton(workingDir)); |
| |
| Context context = new Context(); |
| NBLog.preRegister(context, DEV_NULL); |
| NBAttr.preRegister(context); |
| NBJavacTrees.preRegister(context); |
| final JavacTaskImpl ct = (JavacTaskImpl) ((JavacTool)tool).getTask(null, std, null, Arrays.asList("-source", "1.8", "-target", "1.8"), null, Arrays.asList(new MyFileObject(code)), context); |
| |
| CompilationUnitTree cut = ct.parse().iterator().next(); |
| |
| ct.analyze(); |
| |
| return Pair.<JavacTask, CompilationUnitTree>of(ct, cut); |
| } |
| //</editor-fold> |
| } |