| /* |
| * Copyright (c) 2013, 2015, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| import com.sun.source.tree.ClassTree; |
| import com.sun.source.tree.CompilationUnitTree; |
| import com.sun.source.tree.MethodTree; |
| import com.sun.source.tree.NewClassTree; |
| import com.sun.source.tree.Tree; |
| import com.sun.source.tree.VariableTree; |
| import com.sun.source.util.JavacTask; |
| import com.sun.source.util.TreeScanner; |
| import com.sun.source.util.Trees; |
| import com.sun.tools.javac.api.JavacTool; |
| import com.sun.tools.javac.code.Flags; |
| import com.sun.tools.javac.file.JavacFileManager; |
| import com.sun.tools.javac.tree.JCTree.JCMethodDecl; |
| import java.io.File; |
| import java.io.IOException; |
| import java.net.URI; |
| import java.net.URISyntaxException; |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.Iterator; |
| import java.util.List; |
| import javax.tools.Diagnostic; |
| import javax.tools.DiagnosticListener; |
| import javax.tools.FileObject; |
| import javax.tools.ForwardingJavaFileManager; |
| import javax.tools.JavaFileManager; |
| import javax.tools.JavaFileObject; |
| import javax.tools.SimpleJavaFileObject; |
| |
| /**Takes a source file, parses it once to get the warnings inside the file and |
| * then for each and every declaration in the file, it tries to place |
| * the @SuppressWarnings annotation on the declaration and verifies than no |
| * warnings are produced inside the declaration, but all are produced outside it. |
| * |
| * Currently only works with <code>unchecked,deprecation,cast,divzero</code> warnings. |
| */ |
| public class VerifySuppressWarnings { |
| |
| private static final List<String> STANDARD_PARAMS = |
| Arrays.asList("-Xlint:unchecked,deprecation,cast,divzero"); |
| |
| public static void main(String... args) throws IOException, URISyntaxException { |
| if (args.length != 1) throw new IllegalStateException("Must provide class name!"); |
| String testContent = null; |
| List<File> sourcePath = new ArrayList<>(); |
| for (String sourcePaths : System.getProperty("test.src.path").split(File.pathSeparator)) { |
| sourcePath.add(new File(sourcePaths)); |
| } |
| JavacFileManager fm = JavacTool.create().getStandardFileManager(null, null, null); |
| for (File sp : sourcePath) { |
| File inp = new File(sp, args[0]); |
| |
| if (inp.canRead()) { |
| testContent = fm.getJavaFileObject(inp.toPath()).getCharContent(true).toString(); |
| } |
| } |
| if (testContent == null) throw new IllegalStateException(); |
| final List<Diagnostic<?>> diagnostics = new ArrayList<>(); |
| DiagnosticListener<JavaFileObject> collectDiagnostics = new DiagnosticListener<JavaFileObject>() { |
| @Override public void report(Diagnostic<? extends JavaFileObject> diagnostic) { |
| diagnostics.add(diagnostic); |
| } |
| }; |
| JavaFileObject testFile = new TestFO(new URI("mem://" + args[0]), testContent); |
| JavacTask task = JavacTool.create().getTask(null, |
| new TestFM(fm), |
| collectDiagnostics, |
| STANDARD_PARAMS, |
| null, |
| Arrays.asList(testFile)); |
| final Trees trees = Trees.instance(task); |
| final CompilationUnitTree cut = task.parse().iterator().next(); |
| task.analyze(); |
| |
| final List<int[]> declarationSpans = new ArrayList<>(); |
| |
| new TreeScanner<Void, Void>() { |
| @Override public Void visitClass(ClassTree node, Void p) { |
| handleDeclaration(node); |
| return super.visitClass(node, p); |
| } |
| @Override public Void visitMethod(MethodTree node, Void p) { |
| handleDeclaration(node); |
| return super.visitMethod(node, p); |
| } |
| @Override public Void visitVariable(VariableTree node, Void p) { |
| handleDeclaration(node); |
| return super.visitVariable(node, p); |
| } |
| |
| @Override |
| public Void visitNewClass(NewClassTree node, Void p) { |
| if (node.getClassBody() != null) { |
| scan(node.getClassBody().getMembers(), null); |
| } |
| return null; |
| } |
| |
| private void handleDeclaration(Tree node) { |
| int endPos = (int) trees.getSourcePositions().getEndPosition(cut, node); |
| |
| if (endPos == (-1)) { |
| if (node.getKind() == Tree.Kind.METHOD && (((JCMethodDecl) node).getModifiers().flags & Flags.GENERATEDCONSTR) != 0) { |
| return ; |
| } |
| throw new IllegalStateException(); |
| } |
| |
| declarationSpans.add(new int[] {(int) trees.getSourcePositions().getStartPosition(cut, node), endPos}); |
| } |
| }.scan(cut, null); |
| |
| for (final int[] declarationSpan : declarationSpans) { |
| final String suppressWarnings = |
| "@SuppressWarnings({\"deprecation\", \"unchecked\", \"serial\", \"divzero\"})"; |
| final String updatedContent = testContent.substring(0, declarationSpan[0]) + suppressWarnings + testContent.substring(declarationSpan[0]); |
| final List<Diagnostic<?>> foundErrors = new ArrayList<>(diagnostics); |
| DiagnosticListener<JavaFileObject> verifyDiagnostics = new DiagnosticListener<JavaFileObject>() { |
| @Override public void report(Diagnostic<? extends JavaFileObject> diagnostic) { |
| long adjustedPos = diagnostic.getPosition(); |
| |
| if (adjustedPos >= declarationSpan[0]) adjustedPos -= suppressWarnings.length(); |
| |
| if (declarationSpan[0] <= adjustedPos && adjustedPos <= declarationSpan[1]) { |
| throw new IllegalStateException("unsuppressed: " + diagnostic.getMessage(null)); |
| } |
| |
| boolean found = false; |
| |
| for (Iterator<Diagnostic<?>> it = foundErrors.iterator(); it.hasNext();) { |
| Diagnostic<?> d = it.next(); |
| if (d.getPosition() == adjustedPos && d.getCode().equals(diagnostic.getCode())) { |
| it.remove(); |
| found = true; |
| break; |
| } |
| } |
| |
| if (!found) { |
| throw new IllegalStateException("diagnostic not originally reported: " + diagnostic.getMessage(null)); |
| } |
| } |
| }; |
| |
| JavaFileObject updatedFile = new TestFO(new URI("mem://" + args[0]), updatedContent); |
| JavacTask testTask = JavacTool.create().getTask(null, |
| new TestFM(fm), |
| verifyDiagnostics, |
| STANDARD_PARAMS, |
| null, |
| Arrays.asList(updatedFile)); |
| |
| testTask.analyze(); |
| |
| for (Diagnostic<?> d : foundErrors) { |
| if (d.getPosition() < declarationSpan[0] || declarationSpan[1] < d.getPosition()) { |
| throw new IllegalStateException("missing: " + d.getMessage(null)); |
| } |
| } |
| } |
| } |
| |
| private static final class TestFO extends SimpleJavaFileObject { |
| private final String content; |
| public TestFO(URI uri, String content) { |
| super(uri, Kind.SOURCE); |
| this.content = content; |
| } |
| |
| @Override public CharSequence getCharContent(boolean ignoreEncodingErrors) throws IOException { |
| return content; |
| } |
| |
| @Override public boolean isNameCompatible(String simpleName, Kind kind) { |
| return true; |
| } |
| } |
| |
| private static final class TestFM extends ForwardingJavaFileManager<JavaFileManager> { |
| |
| public TestFM(JavaFileManager fileManager) { |
| super(fileManager); |
| } |
| |
| @Override |
| public boolean isSameFile(FileObject a, FileObject b) { |
| return a.equals(b); |
| } |
| |
| } |
| } |