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/*
* Copyright 2000-2014 JetBrains s.r.o.
*
* 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 org.jetbrains.java.decompiler;
import com.intellij.openapi.application.PathManager;
import com.intellij.openapi.application.PluginPathManager;
import com.intellij.openapi.fileTypes.StdFileTypes;
import com.intellij.openapi.util.io.FileUtil;
import com.intellij.openapi.util.text.StringUtil;
import com.intellij.openapi.vfs.StandardFileSystems;
import com.intellij.openapi.vfs.VfsUtilCore;
import com.intellij.openapi.vfs.VirtualFile;
import com.intellij.openapi.vfs.VirtualFileVisitor;
import com.intellij.psi.*;
import com.intellij.psi.impl.compiled.ClsFileImpl;
import com.intellij.testFramework.PlatformTestUtil;
import com.intellij.testFramework.fixtures.LightCodeInsightFixtureTestCase;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import java.io.File;
import java.io.IOException;
public class IdeaDecompilerTest extends LightCodeInsightFixtureTestCase {
public void testSimple() {
String path = PlatformTestUtil.getRtJarPath() + "!/java/lang/String.class";
VirtualFile file = StandardFileSystems.jar().findFileByPath(path);
assertNotNull(path, file);
CharSequence text = new IdeaDecompiler().getText(file);
assertNotNull(text);
String decompiled = text.toString();
assertTrue(decompiled, decompiled.contains("public final class String"));
assertTrue(decompiled, decompiled.contains("@deprecated"));
assertTrue(decompiled, decompiled.contains("private static class CaseInsensitiveComparator"));
assertFalse(decompiled, decompiled.contains("{ /* compiled code */ }"));
assertFalse(decompiled, decompiled.contains("synthetic"));
}
public void testEnum() { doTestDecompiler(); }
public void testDeprecations() { doTestDecompiler(); }
public void testExtendsList() { doTestDecompiler(); }
public void testParameters() { doTestDecompiler(); }
public void testConstants() { doTestDecompiler(); }
public void testAnonymous() { doTestDecompiler(); }
private void doTestDecompiler() {
String name = PluginPathManager.getPluginHomePath("java-decompiler") + "/testData/" + getName().substring(4);
String path = name + ".class";
VirtualFile file = StandardFileSystems.local().findFileByPath(path);
assertNotNull(path, file);
file.getParent().getChildren();
file.getParent().refresh(false, true);
try {
CharSequence text = new IdeaDecompiler().getText(file);
assertNotNull(text);
String expected = FileUtil.loadFile(new File(name + ".txt"), "UTF-8");
assertEquals(StringUtil.convertLineSeparators(expected), text.toString());
}
catch (IOException e) {
throw new RuntimeException(e);
}
}
public void testStubCompatibilityRt() {
String path = PlatformTestUtil.getRtJarPath() + "!/";
VirtualFile dir = StandardFileSystems.jar().findFileByPath(path);
assertNotNull(path, dir);
doTestStubCompatibility(dir);
}
public void testStubCompatibilityIdea() {
String path = PathManager.getHomePath() + "/out/production";
if (!new File(path).exists()) path = PathManager.getHomePath() + "/out/classes/production";
VirtualFile dir = StandardFileSystems.local().refreshAndFindFileByPath(path);
assertNotNull(path, dir);
doTestStubCompatibility(dir);
}
private void doTestStubCompatibility(VirtualFile root) {
doTestStubCompatibility(root, null);
}
private void doTestStubCompatibility(VirtualFile root, @Nullable final String textPath) {
final int pathStart = root.getPath().length();
final boolean compare = textPath != null && new File(textPath).exists();
VfsUtilCore.visitChildrenRecursively(root, new VirtualFileVisitor() {
@Override
public boolean visitFile(@NotNull VirtualFile file) {
if (file.getName().equals("Jps.class")) return true; // temp. fix
if (!file.isDirectory() && file.getFileType() == StdFileTypes.CLASS && !file.getName().contains("$")) {
PsiFile clsFile = getPsiManager().findFile(file);
assertNotNull(file.getPath(), clsFile);
PsiElement mirror = ((ClsFileImpl)clsFile).getMirror().copy();
if (textPath != null) {
collapseCodeBlocks(mirror);
}
String decompiled = mirror.getText();
assertTrue(file.getPath(), decompiled.contains(file.getNameWithoutExtension()));
if (textPath != null) {
try {
File txtFile = new File(textPath, file.getPath().substring(pathStart));
if (!compare) {
FileUtil.writeToFile(txtFile, decompiled.getBytes("UTF-8"));
}
else {
String expected = FileUtil.loadFile(txtFile, "UTF-8");
assertEquals(file.getPath(), expected, decompiled);
}
}
catch (IOException e) {
throw new RuntimeException(e);
}
}
}
return true;
}
});
}
private static void collapseCodeBlocks(PsiElement original) {
final PsiElementFactory factory = PsiElementFactory.SERVICE.getInstance(original.getProject());
original.accept(new JavaRecursiveElementWalkingVisitor() {
@Override
public void visitMethod(PsiMethod method) {
PsiCodeBlock body = method.getBody();
if (body != null) {
body.replace(factory.createCodeBlockFromText("{ /* collapsed */}", null));
}
}
@Override
public void visitClass(PsiClass aClass) {
for (PsiClassInitializer initializer : aClass.getInitializers()) {
PsiCodeBlock body = initializer.getBody();
body.replace(factory.createCodeBlockFromText("{ /* collapsed */}", null));
}
super.visitClass(aClass);
}
});
}
}
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