jdk8-mips64-public/langtools: test/tools/javac/generics/bridges/BridgeHarness.java@2eb010b6cb22 (annotated)

test/tools/javac/generics/bridges/BridgeHarness.java@2eb010b6cb22 (annotated)

test/tools/javac/generics/bridges/BridgeHarness.java

Thu, 31 Aug 2017 15:17:03 +0800

author: aoqi
date: Thu, 31 Aug 2017 15:17:03 +0800
changeset 2525: 2eb010b6cb22
parent 1883: 6d85acab769e
parent 0: 959103a6100f
permissions: -rw-r--r--

merge

 /*
  * Copyright (c) 2013, 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 8013789
  * @summary Compiler should emit bridges in interfaces
  * @library /tools/javac/lib
  * @build JavacTestingAbstractProcessor BridgeHarness
  * @run main BridgeHarness
  */
 import com.sun.source.util.JavacTask;
 import com.sun.tools.classfile.AccessFlags;
 import com.sun.tools.classfile.ClassFile;
 import com.sun.tools.classfile.ConstantPool;
 import com.sun.tools.classfile.ConstantPoolException;
 import com.sun.tools.classfile.Method;
 import com.sun.tools.javac.code.Symbol.ClassSymbol;
 import com.sun.tools.javac.util.List;
 import java.io.File;
 import java.io.InputStream;
 import java.util.Arrays;
 import java.util.Collections;
 import java.util.HashMap;
 import java.util.Map;
 import java.util.Set;
 import javax.annotation.processing.RoundEnvironment;
 import javax.annotation.processing.SupportedAnnotationTypes;
 import javax.lang.model.element.Element;
 import javax.lang.model.element.TypeElement;
 import javax.tools.JavaCompiler;
 import javax.tools.JavaFileObject;
 import javax.tools.StandardJavaFileManager;
 import javax.tools.ToolProvider;
 import static javax.tools.StandardLocation.*;
 public class BridgeHarness {
     /** number of errors found (must be zero for the test to pass) */
     static int nerrors = 0;
     /** the (shared) Java compiler used for compiling the tests */
     static final JavaCompiler comp = ToolProvider.getSystemJavaCompiler();
     /** the (shared) file manager used by the compiler */
     static final StandardJavaFileManager fm = comp.getStandardFileManager(null, null, null);
     public static void main(String[] args) throws Exception {
         //set sourcepath
         fm.setLocation(SOURCE_PATH,
                 Arrays.asList(new File(System.getProperty("test.src"), "tests")));
         //set output (-d)
         fm.setLocation(javax.tools.StandardLocation.CLASS_OUTPUT,
                 Arrays.asList(new File(System.getProperty("user.dir"))));
         for (JavaFileObject jfo : fm.list(SOURCE_PATH, "", Collections.singleton(JavaFileObject.Kind.SOURCE), true)) {
             //for each source, compile and check against annotations
             new BridgeHarness(jfo).compileAndCheck();
         }
         //if there were errors, fail
         if (nerrors > 0) {
             throw new AssertionError("Errors were found");
         }
     }
     /* utility methods */
     /**
      * Remove an element from a list
      */
     static <Z> List<Z> drop(List<Z> lz, Z z) {
         if (lz.head == z) {
             return drop(lz.tail, z);
         } else if (lz.isEmpty()) {
             return lz;
         } else {
             return drop(lz.tail, z).prepend(lz.head);
         }
     }
     /**
      * return a string representation of a bytecode method
      */
     static String descriptor(Method m, ConstantPool cp) throws ConstantPoolException {
         return m.getName(cp) + m.descriptor.getValue(cp);
     }
     /* test harness */
     /** Test file to be compiled */
     JavaFileObject jfo;
     /** Mapping between class name and list of bridges in class with that name */
     Map<String, List<Bridge>> bridgesMap = new HashMap<String, List<Bridge>>();
     protected BridgeHarness(JavaFileObject jfo) {
         this.jfo = jfo;
     }
     /**
      * Compile a test using a custom annotation processor and check the generated
      * bytecode against discovered annotations.
      */
     protected void compileAndCheck() throws Exception {
         JavacTask ct = (JavacTask)comp.getTask(null, fm, null, null, null, Arrays.asList(jfo));
         ct.setProcessors(Collections.singleton(new BridgeFinder()));
         for (JavaFileObject jfo : ct.generate()) {
             checkBridges(jfo);
         }
     }
     /**
      * Check that every bridge in the generated classfile has a matching bridge
      * annotation in the bridge map
      */
     protected void checkBridges(JavaFileObject jfo) {
         try (InputStream is = jfo.openInputStream()) {
             ClassFile cf = ClassFile.read(is);
             System.err.println("checking: " + cf.getName());
             List<Bridge> bridgeList = bridgesMap.get(cf.getName());
             if (bridgeList == null) {
                 //no bridges - nothing to check;
                 bridgeList = List.nil();
             }
             for (Method m : cf.methods) {
                 if (m.access_flags.is(AccessFlags.ACC_SYNTHETIC | AccessFlags.ACC_BRIDGE)) {
                     //this is a bridge - see if there's a match in the bridge list
                     Bridge match = null;
                     for (Bridge b : bridgeList) {
                         if (b.value().equals(descriptor(m, cf.constant_pool))) {
                             match = b;
                             break;
                         }
                     }
                     if (match == null) {
                         error("No annotation for bridge method: " + descriptor(m, cf.constant_pool));
                     } else {
                         bridgeList = drop(bridgeList, match);
                     }
                 }
             }
             if (bridgeList.nonEmpty()) {
                 error("Redundant bridge annotation found: " + bridgeList.head.value());
             }
         } catch (Exception e) {
             e.printStackTrace();
             throw new Error("error reading " + jfo.toUri() +": " + e);
         }
     }
     /**
      * Log an error
      */
     protected void error(String msg) {
         nerrors++;
         System.err.printf("Error occurred while checking file: %s\nreason: %s\n", jfo.getName(), msg);
     }
     /**
      * This annotation processor is used to populate the bridge map with the
      * contents of the annotations that are found on the tests being compiled
      */
     @SupportedAnnotationTypes({"Bridges","Bridge"})
     class BridgeFinder extends JavacTestingAbstractProcessor {
         @Override
         public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {
             if (roundEnv.processingOver())
                 return true;
             TypeElement bridgeAnno = elements.getTypeElement("Bridge");
             TypeElement bridgesAnno = elements.getTypeElement("Bridges");
             //see if there are repeated annos
             for (Element elem: roundEnv.getElementsAnnotatedWith(bridgesAnno)) {
                 List<Bridge> bridgeList = List.nil();
                 Bridges bridges = elem.getAnnotation(Bridges.class);
                 for (Bridge bridge : bridges.value()) {
                     bridgeList = bridgeList.prepend(bridge);
                 }
                 bridgesMap.put(((ClassSymbol)elem).flatname.toString(), bridgeList);
             }
             //see if there are non-repeated annos
             for (Element elem: roundEnv.getElementsAnnotatedWith(bridgeAnno)) {
                 Bridge bridge = elem.getAnnotation(Bridge.class);
                 bridgesMap.put(((ClassSymbol)elem).flatname.toString(),
                         List.of(bridge));
             }
             return true;
         }
     }
 }

Mercurial > jdk8-mips64-public > langtools / annotate

test/tools/javac/generics/bridges/BridgeHarness.java@2eb010b6cb22 (annotated)

test/tools/javac/generics/bridges/BridgeHarness.java