jjg@893: /*
jjg@893:  * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
jjg@893:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
jjg@893:  *
jjg@893:  * This code is free software; you can redistribute it and/or modify it
jjg@893:  * under the terms of the GNU General Public License version 2 only, as
jjg@893:  * published by the Free Software Foundation.
jjg@893:  *
jjg@893:  * This code is distributed in the hope that it will be useful, but WITHOUT
jjg@893:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
jjg@893:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
jjg@893:  * version 2 for more details (a copy is included in the LICENSE file that
jjg@893:  * accompanied this code).
jjg@893:  *
jjg@893:  * You should have received a copy of the GNU General Public License version
jjg@893:  * 2 along with this work; if not, write to the Free Software Foundation,
jjg@893:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
jjg@893:  *
jjg@893:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
jjg@893:  * or visit www.oracle.com if you need additional information or have any
jjg@893:  * questions.
jjg@893:  */
jjg@893: 
jjg@893: /**
jjg@893:  * @test
jjg@893:  * @bug 7021650
jjg@893:  * @summary Fix Context issues
darcy@1466:  * @library /tools/javac/lib
jjg@893:  * @build JavacTestingAbstractProcessor T7021650
jjg@893:  * @run main T7021650
jjg@893:  */
jjg@893: 
jjg@893: import java.io.*;
jjg@893: import java.net.*;
jjg@893: import java.util.*;
jjg@893: import javax.annotation.processing.*;
jjg@893: import javax.lang.model.element.*;
jjg@893: import javax.tools.*;
jjg@893: 
jjg@893: import com.sun.tools.javac.comp.Attr;
jjg@893: import com.sun.tools.javac.file.JavacFileManager;
jjg@893: import com.sun.tools.javac.main.Main;
jjg@893: import com.sun.tools.javac.processing.JavacProcessingEnvironment;
jjg@893: import com.sun.tools.javac.util.Context;
jjg@893: 
jjg@893: public class T7021650 extends JavacTestingAbstractProcessor {
jjg@893:     public static void main(String... args) throws Exception {
jjg@893:         new T7021650().run();
jjg@893:     }
jjg@893: 
jjg@893:     static File testSrc = new File(System.getProperty("test.src"));
jjg@893:     static final int MAX_ROUNDS = 3;
jjg@893: 
jjg@893:     /**
jjg@893:      * Perform a compilation with custom factories registered in the context,
jjg@893:      * and verify that corresponding objects are created in each round.
jjg@893:      */
jjg@893:     void run() throws Exception {
jjg@893:         Counter demoCounter = new Counter();
jjg@893:         Counter myAttrCounter = new Counter();
jjg@893: 
jjg@893:         Context context = new Context();
jjg@893:         // Use a custom file manager which creates classloaders for annotation
jjg@893:         // processors with a sensible delegation parent, so that all instances
jjg@893:         // of test classes come from the same class loader. This is important
jjg@893:         // because the test performs class checks on the instances of classes
jjg@893:         // found in the context for each round or processing.
jjg@893:         context.put(JavaFileManager.class, new Context.Factory<JavaFileManager>() {
jjg@893:             public JavaFileManager make(Context c) {
jjg@893:                 return new JavacFileManager(c, true, null) {
jjg@893:                     @Override
jjg@893:                     protected ClassLoader getClassLoader(URL[] urls) {
jjg@893:                         return new URLClassLoader(urls, T7021650.class.getClassLoader());
jjg@893:                     }
jjg@893:                 };
jjg@893:             }
jjg@893:         });
jjg@893: 
jjg@893:         Demo.preRegister(context, demoCounter);
jjg@893:         MyAttr.preRegister(context, myAttrCounter);
jjg@893: 
jjg@893:         String[] args = {
jjg@893:             "-d", ".",
jjg@893:             "-processor", T7021650.class.getName(),
jjg@893:             "-XprintRounds",
jjg@893:             new File(testSrc, T7021650.class.getName() + ".java").getPath()
jjg@893:         };
jjg@893: 
jjg@893:         compile(context, args);
jjg@893: 
jjg@893:         // Expect to create Demo for initial round, then MAX_ROUNDS in which
jjg@893:         // GenX files are generated, then standard final round of processing.
jjg@893:         checkEqual("demoCounter", demoCounter.count, MAX_ROUNDS + 2);
jjg@893: 
jjg@893:         // Expect to create MyAttr for same processing rounds as for Demo,
jjg@893:         // plus additional context for final compilation.
jjg@893:         checkEqual("myAttrCounter", myAttrCounter.count, MAX_ROUNDS + 3);
jjg@893:     }
jjg@893: 
jjg@893:     void compile(Context context, String... args) throws Exception {
jjg@893:         StringWriter sw = new StringWriter();
jjg@893:         PrintWriter pw = new PrintWriter(sw);
jjg@893:         Main m = new Main("javac", pw);
jjg@1097:         Main.Result res = m.compile(args, context);
jjg@893:         pw.close();
jjg@893:         String out = sw.toString();
jjg@893:         if (!out.isEmpty())
jjg@893:             System.err.println(out);
jjg@1097:         if (!res.isOK())
jjg@1097:             throw new Exception("compilation failed unexpectedly: result=" + res);
jjg@893:     }
jjg@893: 
jjg@893:     void checkEqual(String label, int found, int expect) throws Exception {
jjg@893:         if (found != expect)
jjg@893:             throw new Exception("unexpected value for " + label
jjg@893:                     + ": expected " + expect
jjg@893:                     + ": found " + found);
jjg@893:     }
jjg@893: 
jjg@893:     //---------------
jjg@893: 
jjg@893:     /*
jjg@893:      * A custom class unknown to javac but nonetheless registered in the context.
jjg@893:      */
jjg@893:     static class Demo {
jjg@893:         static void preRegister(Context context, final Counter counter) {
jjg@893:             context.put(Demo.class, new Context.Factory<Demo>() {
jjg@893:                 public Demo make(Context c) {
jjg@893:                     counter.count++;
jjg@893:                     return new Demo(c);
jjg@893:                 }
jjg@893:             });
jjg@893:         }
jjg@893: 
jjg@893:         Demo(Context c) {
jjg@893:             c.put(Demo.class, this);
jjg@893:         }
jjg@893: 
jjg@893:         static Demo instance(Context context) {
jjg@893:             return context.get(Demo.class);
jjg@893:         }
jjg@893:     }
jjg@893: 
jjg@893:     /**
jjg@893:      * A custom version of a standard javac component.
jjg@893:      */
jjg@893:     static class MyAttr extends Attr {
jjg@893:         static void preRegister(Context context, final Counter counter) {
jjg@893:             context.put(attrKey, new Context.Factory<Attr>() {
jjg@893:                 public Attr make(Context c) {
jjg@893:                     counter.count++;
jjg@893:                     return new MyAttr(c);
jjg@893:                 }
jjg@893:             });
jjg@893:         }
jjg@893: 
jjg@893:         MyAttr(Context c) {
jjg@893:             super(c);
jjg@893:         }
jjg@893:     }
jjg@893: 
jjg@893:     static class Counter {
jjg@893:         int count;
jjg@893:     }
jjg@893: 
jjg@893:     //---------------
jjg@893: 
jjg@893:     int round = 0;
jjg@893: 
jjg@893:     @Override
jjg@893:     public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {
jjg@893:         round++;
jjg@893: 
jjg@893:         Context context = ((JavacProcessingEnvironment) processingEnv).getContext();
jjg@893: 
jjg@893:         // verify items in context as expected
jjg@893:         check("Demo", Demo.instance(context), Demo.class);
jjg@893:         check("Attr", Attr.instance(context), MyAttr.class);
jjg@893: 
jjg@893:         // For a few rounds, generate new source files, so that we can check whether
jjg@893:         // values in the context are correctly handled in subsequent processing rounds
jjg@893:         if (round <= MAX_ROUNDS) {
jjg@893:             String pkg = "p";
jjg@893:             String currClass = "Gen" + round;
jjg@893:             String curr = pkg + "." + currClass;
jjg@893:             String next = (pkg + ".Gen" + (round + 1));
jjg@893:             StringBuilder text = new StringBuilder();
jjg@893:             text.append("package ").append(pkg).append(";\n");
jjg@893:             text.append("public class ").append(currClass).append(" {\n");
jjg@893:             if (round < MAX_ROUNDS)
jjg@893:                 text.append("    ").append(next).append(" x;\n");
jjg@893:             text.append("}\n");
jjg@893: 
jjg@893:             try {
jjg@893:                 JavaFileObject fo = filer.createSourceFile(curr);
jjg@893:                 Writer out = fo.openWriter();
jjg@893:                 try {
jjg@893:                     out.write(text.toString());
jjg@893:                 } finally {
jjg@893:                     out.close();
jjg@893:                 }
jjg@893:             } catch (IOException e) {
jjg@893:                 throw new Error(e);
jjg@893:             }
jjg@893:         }
jjg@893: 
jjg@893:         return true;
jjg@893:     }
jjg@893: 
jjg@893:     void check(String label, Object o, Class<?> clazz) {
jjg@893:         if (o == null)
jjg@893:             throw new IllegalStateException(label + ": no item found");
jjg@893:         if (!clazz.isAssignableFrom(o.getClass()))
jjg@893:             throw new IllegalStateException(label + ": unexpected class: " + o.getClass());
jjg@893:     }
jjg@893: }