/* * Copyright (c) 2005, 2010, 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. */ /* * @test * @bug 4813736 * @summary Additional functionality test of task and JSR 269 * @author Peter von der Ah\u00e9 * @library ./lib * @run main TestJavacTaskScanner TestJavacTaskScanner.java */ import com.sun.tools.javac.api.JavacTaskImpl; import com.sun.tools.javac.parser.*; import com.sun.tools.javac.parser.Tokens.Token; import com.sun.tools.javac.util.*; import java.io.*; import java.net.*; import java.nio.*; import java.nio.charset.Charset; import java.util.Arrays; import javax.lang.model.element.Element; import javax.lang.model.element.TypeElement; import javax.lang.model.type.DeclaredType; import javax.lang.model.type.TypeMirror; import javax.lang.model.util.Elements; import javax.lang.model.util.Types; import javax.tools.*; import static javax.tools.StandardLocation.CLASS_PATH; import static javax.tools.StandardLocation.SOURCE_PATH; import static javax.tools.StandardLocation.CLASS_OUTPUT; public class TestJavacTaskScanner extends ToolTester { final JavacTaskImpl task; final Elements elements; final Types types; int numTokens; int numParseTypeElements; int numAllMembers; TestJavacTaskScanner(File file) { final Iterable compilationUnits = fm.getJavaFileObjects(new File[] {file}); StandardJavaFileManager fm = getLocalFileManager(tool, null, null); task = (JavacTaskImpl)tool.getTask(null, fm, null, null, null, compilationUnits); task.getContext().put(ScannerFactory.scannerFactoryKey, new MyScanner.Factory(task.getContext(), this)); elements = task.getElements(); types = task.getTypes(); } public void run() { Iterable toplevels; try { toplevels = task.enter(task.parse()); } catch (IOException ex) { throw new AssertionError(ex); } for (TypeElement clazz : toplevels) { System.out.format("Testing %s:%n%n", clazz.getSimpleName()); testParseType(clazz); testGetAllMembers(clazz); System.out.println(); System.out.println(); System.out.println(); } System.out.println("#tokens: " + numTokens); System.out.println("#parseTypeElements: " + numParseTypeElements); System.out.println("#allMembers: " + numAllMembers); check(numTokens, "#Tokens", 1222); check(numParseTypeElements, "#parseTypeElements", 136); check(numAllMembers, "#allMembers", 52); } void check(int value, String name, int expected) { // allow some slop in the comparison to allow for minor edits in the // test and in the platform if (value < expected * 9 / 10) throw new Error(name + " lower than expected; expected " + expected + "; found: " + value); if (value > expected * 11 / 10) throw new Error(name + " higher than expected; expected " + expected + "; found: " + value); } void testParseType(TypeElement clazz) { DeclaredType type = (DeclaredType)task.parseType("List", clazz); for (Element member : elements.getAllMembers((TypeElement)type.asElement())) { TypeMirror mt = types.asMemberOf(type, member); System.out.format("%s : %s -> %s%n", member.getSimpleName(), member.asType(), mt); numParseTypeElements++; } } public static void main(String... args) throws IOException { String srcdir = System.getProperty("test.src"); new TestJavacTaskScanner(new File(srcdir, args[0])).run(); } private void testGetAllMembers(TypeElement clazz) { for (Element member : elements.getAllMembers(clazz)) { System.out.format("%s : %s%n", member.getSimpleName(), member.asType()); numAllMembers++; } } /* Similar to ToolTester.getFileManager, except that this version also ensures * javac classes will be available on the classpath. The javac classes are assumed * to be on the classpath used to run this test (this is true when using jtreg). * The classes are found by obtaining the URL for a sample javac class, using * getClassLoader().getResource(), and then deconstructing the URL to find the * underlying directory or jar file to place on the classpath. */ public StandardJavaFileManager getLocalFileManager(JavaCompiler tool, DiagnosticListener dl, Charset encoding) { File javac_classes; try { final String javacMainClass = "com/sun/tools/javac/Main.class"; URL url = getClass().getClassLoader().getResource(javacMainClass); if (url == null) throw new Error("can't locate javac classes"); URI uri = url.toURI(); String scheme = uri.getScheme(); String ssp = uri.getSchemeSpecificPart(); if (scheme.equals("jar")) { javac_classes = new File(new URI(ssp.substring(0, ssp.indexOf("!/")))); } else if (scheme.equals("file")) { javac_classes = new File(ssp.substring(0, ssp.indexOf(javacMainClass))); } else throw new Error("unknown URL: " + url); } catch (URISyntaxException e) { throw new Error(e); } System.err.println("javac_classes: " + javac_classes); StandardJavaFileManager fm = tool.getStandardFileManager(dl, null, encoding); try { fm.setLocation(SOURCE_PATH, Arrays.asList(test_src)); fm.setLocation(CLASS_PATH, Arrays.asList(test_classes, javac_classes)); fm.setLocation(CLASS_OUTPUT, Arrays.asList(test_classes)); } catch (IOException e) { throw new AssertionError(e); } return fm; } } class MyScanner extends Scanner { public static class Factory extends ScannerFactory { public Factory(Context context, TestJavacTaskScanner test) { super(context); this.test = test; } @Override public Scanner newScanner(CharSequence input, boolean keepDocComments) { if (input instanceof CharBuffer) { return new MyScanner(this, (CharBuffer)input, test); } else { char[] array = input.toString().toCharArray(); return newScanner(array, array.length, keepDocComments); } } @Override public Scanner newScanner(char[] input, int inputLength, boolean keepDocComments) { return new MyScanner(this, input, inputLength, test); } private TestJavacTaskScanner test; } protected MyScanner(ScannerFactory fac, CharBuffer buffer, TestJavacTaskScanner test) { super(fac, buffer); this.test = test; } protected MyScanner(ScannerFactory fac, char[] input, int inputLength, TestJavacTaskScanner test) { super(fac, input, inputLength); this.test = test; } public void nextToken() { super.nextToken(); Token tk = token(); System.err.format("Saw token %s %n", tk.kind); test.numTokens++; } private TestJavacTaskScanner test; }