Mercurial > jdk8-mips64-public > langtools / file revision

 /*

  * Copyright (c) 2005, 2014, 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 8013256

  * @summary Additional functionality test of task and JSR 269

  * @author  Peter von der Ah\u00e9

  * @library ./lib

  * @build ToolTester

  * @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<? extends JavaFileObject> 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<? extends TypeElement> 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", 158);

         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<String>", clazz);

         for (Element member : elements.getAllMembers((TypeElement)type.asElement())) {

             TypeMirror mt = types.asMemberOf(type, member);

             System.out.format("type#%d: %s : %s -> %s%n",

                 numParseTypeElements, 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("elem#%d: %s : %s%n",

                 numAllMembers, 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<JavaFileObject> 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,   join(test_class_path, Arrays.asList(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;

 }