jdk8-mips64-public/langtools: test/tools/javac/util/context/T7021650.java@2eb010b6cb22 (annotated)

test/tools/javac/util/context/T7021650.java@2eb010b6cb22 (annotated)

test/tools/javac/util/context/T7021650.java

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

author: aoqi
date: Thu, 31 Aug 2017 15:17:03 +0800
changeset 2525: 2eb010b6cb22
parent 1466: b52a38d4536c
parent 0: 959103a6100f
permissions: -rw-r--r--

merge

 /*
  * Copyright (c) 2011, 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 7021650
  * @summary Fix Context issues
  * @library /tools/javac/lib
  * @build JavacTestingAbstractProcessor T7021650
  * @run main T7021650
  */
 import java.io.*;
 import java.net.*;
 import java.util.*;
 import javax.annotation.processing.*;
 import javax.lang.model.element.*;
 import javax.tools.*;
 import com.sun.tools.javac.comp.Attr;
 import com.sun.tools.javac.file.JavacFileManager;
 import com.sun.tools.javac.main.Main;
 import com.sun.tools.javac.processing.JavacProcessingEnvironment;
 import com.sun.tools.javac.util.Context;
 public class T7021650 extends JavacTestingAbstractProcessor {
     public static void main(String... args) throws Exception {
         new T7021650().run();
     }
     static File testSrc = new File(System.getProperty("test.src"));
     static final int MAX_ROUNDS = 3;
     /**
      * Perform a compilation with custom factories registered in the context,
      * and verify that corresponding objects are created in each round.
      */
     void run() throws Exception {
         Counter demoCounter = new Counter();
         Counter myAttrCounter = new Counter();
         Context context = new Context();
         // Use a custom file manager which creates classloaders for annotation
         // processors with a sensible delegation parent, so that all instances
         // of test classes come from the same class loader. This is important
         // because the test performs class checks on the instances of classes
         // found in the context for each round or processing.
         context.put(JavaFileManager.class, new Context.Factory<JavaFileManager>() {
             public JavaFileManager make(Context c) {
                 return new JavacFileManager(c, true, null) {
                     @Override
                     protected ClassLoader getClassLoader(URL[] urls) {
                         return new URLClassLoader(urls, T7021650.class.getClassLoader());
                     }
                 };
             }
         });
         Demo.preRegister(context, demoCounter);
         MyAttr.preRegister(context, myAttrCounter);
         String[] args = {
             "-d", ".",
             "-processor", T7021650.class.getName(),
             "-XprintRounds",
             new File(testSrc, T7021650.class.getName() + ".java").getPath()
         };
         compile(context, args);
         // Expect to create Demo for initial round, then MAX_ROUNDS in which
         // GenX files are generated, then standard final round of processing.
         checkEqual("demoCounter", demoCounter.count, MAX_ROUNDS + 2);
         // Expect to create MyAttr for same processing rounds as for Demo,
         // plus additional context for final compilation.
         checkEqual("myAttrCounter", myAttrCounter.count, MAX_ROUNDS + 3);
     }
     void compile(Context context, String... args) throws Exception {
         StringWriter sw = new StringWriter();
         PrintWriter pw = new PrintWriter(sw);
         Main m = new Main("javac", pw);
         Main.Result res = m.compile(args, context);
         pw.close();
         String out = sw.toString();
         if (!out.isEmpty())
             System.err.println(out);
         if (!res.isOK())
             throw new Exception("compilation failed unexpectedly: result=" + res);
     }
     void checkEqual(String label, int found, int expect) throws Exception {
         if (found != expect)
             throw new Exception("unexpected value for " + label
                     + ": expected " + expect
                     + ": found " + found);
     }
     //---------------
     /*
      * A custom class unknown to javac but nonetheless registered in the context.
      */
     static class Demo {
         static void preRegister(Context context, final Counter counter) {
             context.put(Demo.class, new Context.Factory<Demo>() {
                 public Demo make(Context c) {
                     counter.count++;
                     return new Demo(c);
                 }
             });
         }
         Demo(Context c) {
             c.put(Demo.class, this);
         }
         static Demo instance(Context context) {
             return context.get(Demo.class);
         }
     }
     /**
      * A custom version of a standard javac component.
      */
     static class MyAttr extends Attr {
         static void preRegister(Context context, final Counter counter) {
             context.put(attrKey, new Context.Factory<Attr>() {
                 public Attr make(Context c) {
                     counter.count++;
                     return new MyAttr(c);
                 }
             });
         }
         MyAttr(Context c) {
             super(c);
         }
     }
     static class Counter {
         int count;
     }
     //---------------
     int round = 0;
     @Override
     public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {
         round++;
         Context context = ((JavacProcessingEnvironment) processingEnv).getContext();
         // verify items in context as expected
         check("Demo", Demo.instance(context), Demo.class);
         check("Attr", Attr.instance(context), MyAttr.class);
         // For a few rounds, generate new source files, so that we can check whether
         // values in the context are correctly handled in subsequent processing rounds
         if (round <= MAX_ROUNDS) {
             String pkg = "p";
             String currClass = "Gen" + round;
             String curr = pkg + "." + currClass;
             String next = (pkg + ".Gen" + (round + 1));
             StringBuilder text = new StringBuilder();
             text.append("package ").append(pkg).append(";\n");
             text.append("public class ").append(currClass).append(" {\n");
             if (round < MAX_ROUNDS)
                 text.append("    ").append(next).append(" x;\n");
             text.append("}\n");
             try {
                 JavaFileObject fo = filer.createSourceFile(curr);
                 Writer out = fo.openWriter();
                 try {
                     out.write(text.toString());
                 } finally {
                     out.close();
                 }
             } catch (IOException e) {
                 throw new Error(e);
             }
         }
         return true;
     }
     void check(String label, Object o, Class<?> clazz) {
         if (o == null)
             throw new IllegalStateException(label + ": no item found");
         if (!clazz.isAssignableFrom(o.getClass()))
             throw new IllegalStateException(label + ": unexpected class: " + o.getClass());
     }
 }

Mercurial > jdk8-mips64-public > langtools / annotate

test/tools/javac/util/context/T7021650.java@2eb010b6cb22 (annotated)

test/tools/javac/util/context/T7021650.java