jdk8-mips64-public/langtools: comparison test/tools/javac/util/context/T7021650.java

-:3e30c95da3c6
+:8f0dcb9499db
+/*
+* 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 ../../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);
+int rc = m.compile(args, context);
+pw.close();
+String out = sw.toString();
+if (!out.isEmpty())
+System.err.println(out);
+if (rc != 0)
+throw new Exception("compilation failed unexpectedly: rc=" + rc);
+}
+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 / file comparison

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

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