| /* |
| * Copyright (c) 2011, 2015, 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 |
| * @modules jdk.compiler/com.sun.tools.javac.comp |
| * jdk.compiler/com.sun.tools.javac.file |
| * jdk.compiler/com.sun.tools.javac.main |
| * jdk.compiler/com.sun.tools.javac.processing |
| * jdk.compiler/com.sun.tools.javac.util |
| * @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 myDemoCounter = 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()); |
| } |
| }; |
| } |
| }); |
| |
| MyDemo.preRegister(context, myDemoCounter); |
| MyAttr.preRegister(context, myAttrCounter); |
| |
| String[] args = { |
| "-d", ".", |
| "-processor", T7021650.class.getName(), |
| "-XprintRounds", |
| new File(testSrc, T7021650.class.getName() + ".java").getPath() |
| }; |
| |
| compile(context, args); |
| |
| // the services should only be created once in the current scheme: |
| checkEqual("demoCounter", myDemoCounter.count, 1); |
| checkEqual("myAttrCounter", myAttrCounter.count, 1); |
| } |
| |
| 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 { |
| Demo(Context c) { |
| c.put(Demo.class, this); |
| } |
| |
| static Demo instance(Context context) { |
| return context.get(Demo.class); |
| } |
| } |
| |
| static class MyDemo extends 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 MyDemo(c); |
| } |
| }); |
| } |
| |
| MyDemo(Context c) { |
| super(c); |
| } |
| } |
| |
| /** |
| * 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), MyDemo.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()); |
| } |
| } |