jdk8-mips64-public/langtools: test/tools/javac/api/TestJavacTaskScanner.java@9d9f26857129

     1 /*

     2  * Copyright (c) 2005, 2006, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  */

    24 /*

    25  * @test

    26  * @bug     4813736

    27  * @summary Additional functionality test of task and JSR 269

    28  * @author  Peter von der Ah\u00e9

    29  * @library ./lib

    30  * @run main TestJavacTaskScanner TestJavacTaskScanner.java

    31  */

    33 import com.sun.tools.javac.api.JavacTaskImpl;

    34 import com.sun.tools.javac.parser.*; // XXX

    35 import com.sun.tools.javac.util.*; // XXX

    36 import java.io.*;

    37 import java.net.*;

    38 import java.nio.*;

    39 import java.nio.charset.Charset;

    40 import java.util.Arrays;

    41 import javax.lang.model.element.Element;

    42 import javax.lang.model.element.TypeElement;

    43 import javax.lang.model.type.DeclaredType;

    44 import javax.lang.model.type.TypeMirror;

    45 import javax.lang.model.util.Elements;

    46 import javax.lang.model.util.Types;

    47 import javax.tools.*;

    49 import static javax.tools.StandardLocation.CLASS_PATH;

    50 import static javax.tools.StandardLocation.SOURCE_PATH;

    51 import static javax.tools.StandardLocation.CLASS_OUTPUT;

    53 public class TestJavacTaskScanner extends ToolTester {

    55     final JavacTaskImpl task;

    56     final Elements elements;

    57     final Types types;

    59     int numTokens;

    60     int numParseTypeElements;

    61     int numAllMembers;

    63     TestJavacTaskScanner(File file) {

    64         final Iterable<? extends JavaFileObject> compilationUnits =

    65             fm.getJavaFileObjects(new File[] {file});

    66         StandardJavaFileManager fm = getLocalFileManager(tool, null, null);

    67         task = (JavacTaskImpl)tool.getTask(null, fm, null, null, null, compilationUnits);

    68         task.getContext().put(Scanner.Factory.scannerFactoryKey,

    69                 new MyScanner.Factory(task.getContext(), this));

    70         elements = task.getElements();

    71         types = task.getTypes();

    72     }

    74     public void run() {

    75         Iterable<? extends TypeElement> toplevels;

    76         try {

    77             toplevels = task.enter(task.parse());

    78         } catch (IOException ex) {

    79             throw new AssertionError(ex);

    80         }

    81         for (TypeElement clazz : toplevels) {

    82             System.out.format("Testing %s:%n%n", clazz.getSimpleName());

    83             testParseType(clazz);

    84             testGetAllMembers(clazz);

    85             System.out.println();

    86             System.out.println();

    87             System.out.println();

    88         }

    90         System.out.println("#tokens: " + numTokens);

    91         System.out.println("#parseTypeElements: " + numParseTypeElements);

    92         System.out.println("#allMembers: " + numAllMembers);

    94         check(numTokens, "#Tokens", 1222);

    95         check(numParseTypeElements, "#parseTypeElements", 136);

    96         check(numAllMembers, "#allMembers", 67);

    97     }

    99     void check(int value, String name, int expected) {

   100         // allow some slop in the comparison to allow for minor edits in the

   101         // test and in the platform

   102         if (value < expected * 9 / 10)

   103             throw new Error(name + " lower than expected; expected " + expected + "; found: " + value);

   104         if (value > expected * 11 / 10)

   105             throw new Error(name + " higher than expected; expected " + expected + "; found: " + value);

   106     }

   108     void testParseType(TypeElement clazz) {

   109         DeclaredType type = (DeclaredType)task.parseType("List<String>", clazz);

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

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

   112             System.out.format("%s : %s -> %s%n", member.getSimpleName(), member.asType(), mt);

   113             numParseTypeElements++;

   114         }

   115     }

   117     public static void main(String... args) throws IOException {

   118         String srcdir = System.getProperty("test.src");

   119         new TestJavacTaskScanner(new File(srcdir, args[0])).run();

   120     }

   122     private void testGetAllMembers(TypeElement clazz) {

   123         for (Element member : elements.getAllMembers(clazz)) {

   124             System.out.format("%s : %s%n", member.getSimpleName(), member.asType());

   125             numAllMembers++;

   126         }

   127     }

   129     /* Similar to ToolTester.getFileManager, except that this version also ensures

   130      * javac classes will be available on the classpath.  The javac classes are assumed

   131      * to be on the classpath used to run this test (this is true when using jtreg).

   132      * The classes are found by obtaining the URL for a sample javac class, using

   133      * getClassLoader().getResource(), and then deconstructing the URL to find the

   134      * underlying directory or jar file to place on the classpath.

   135      */

   136     public StandardJavaFileManager getLocalFileManager(JavaCompiler tool,

   137                                                         DiagnosticListener<JavaFileObject> dl,

   138                                                         Charset encoding) {

   139         File javac_classes;

   140         try {

   141             final String javacMainClass = "com/sun/tools/javac/Main.class";

   142             URL url = getClass().getClassLoader().getResource(javacMainClass);

   143             if (url == null)

   144                 throw new Error("can't locate javac classes");

   145             URI uri = url.toURI();

   146             String scheme = uri.getScheme();

   147             String ssp = uri.getSchemeSpecificPart();

   148             if (scheme.equals("jar")) {

   149                 javac_classes = new File(new URI(ssp.substring(0, ssp.indexOf("!/"))));

   150             } else if (scheme.equals("file")) {

   151                 javac_classes = new File(ssp.substring(0, ssp.indexOf(javacMainClass)));

   152             } else

   153                 throw new Error("unknown URL: " + url);

   154         } catch (URISyntaxException e) {

   155             throw new Error(e);

   156         }

   157         System.err.println("javac_classes: " + javac_classes);

   159         StandardJavaFileManager fm = tool.getStandardFileManager(dl, null, encoding);

   160         try {

   161             fm.setLocation(SOURCE_PATH,  Arrays.asList(test_src));

   162             fm.setLocation(CLASS_PATH,   Arrays.asList(test_classes, javac_classes));

   163             fm.setLocation(CLASS_OUTPUT, Arrays.asList(test_classes));

   164         } catch (IOException e) {

   165             throw new AssertionError(e);

   166         }

   167         return fm;

   168     }

   169 }

   171 class MyScanner extends Scanner {

   173     public static class Factory extends Scanner.Factory {

   174         public Factory(Context context, TestJavacTaskScanner test) {

   175             super(context);

   176             this.test = test;

   177         }

   179         @Override

   180         public Scanner newScanner(CharSequence input) {

   181             if (input instanceof CharBuffer) {

   182                 return new MyScanner(this, (CharBuffer)input, test);

   183             } else {

   184                 char[] array = input.toString().toCharArray();

   185                 return newScanner(array, array.length);

   186             }

   187         }

   189         @Override

   190         public Scanner newScanner(char[] input, int inputLength) {

   191             return new MyScanner(this, input, inputLength, test);

   192         }

   194         private TestJavacTaskScanner test;

   195     }

   196     protected MyScanner(Factory fac, CharBuffer buffer, TestJavacTaskScanner test) {

   197         super(fac, buffer);

   198         this.test = test;

   199     }

   200     protected MyScanner(Factory fac, char[] input, int inputLength, TestJavacTaskScanner test) {

   201         super(fac, input, inputLength);

   202         this.test = test;

   203     }

   205     public void nextToken() {

   206         super.nextToken();

   207         System.err.format("Saw token %s (%s)%n", token(), name());

   208         test.numTokens++;

   209     }

   211     private TestJavacTaskScanner test;

   213 }

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

test/tools/javac/api/TestJavacTaskScanner.java@9d9f26857129

test/tools/javac/api/TestJavacTaskScanner.java