1 /*
   2  * Copyright (c) 2015, 2016, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /*
  25  * @test
  26  * @bug 8142931
  27  * @summary java compiler: type erasure doesn't work since 9-b28
  28  * @modules jdk.compiler/com.sun.tools.javac.api
  29  *          jdk.compiler/com.sun.tools.javac.file
  30  */
  31 
  32 import java.io.*;
  33 import java.util.*;
  34 import javax.annotation.processing.*;
  35 import javax.lang.model.*;
  36 import javax.lang.model.element.*;
  37 import javax.lang.model.util.ElementFilter;
  38 import javax.lang.model.type.TypeMirror;
  39 import javax.lang.model.type.DeclaredType;
  40 import javax.tools.*;
  41 import com.sun.source.util.*;
  42 import com.sun.tools.javac.api.*;
  43 
  44 @SupportedAnnotationTypes("*")
  45 public class T8142931 extends AbstractProcessor {
  46 
  47     public java.util.List<? extends javax.xml.namespace.QName> f0;
  48 
  49     public static void main(String... args) throws IOException {
  50         String testSrc = System.getProperty("test.src", ".");
  51         String testClasses = System.getProperty("test.classes");
  52         JavaCompiler tool = ToolProvider.getSystemJavaCompiler();
  53         MyDiagListener dl = new MyDiagListener();
  54         try (StandardJavaFileManager fm = tool.getStandardFileManager(dl, null, null)) {
  55             Iterable<? extends JavaFileObject> files =
  56                 fm.getJavaFileObjectsFromFiles(Arrays.asList(new File(testSrc, T8142931.class.getName()+".java")));
  57             Iterable<String> opts = Arrays.asList(
  58                 "--add-exports", "jdk.compiler/com.sun.tools.javac.api=ALL-UNNAMED",
  59                 "-XDaccessInternalAPI",
  60                 "-proc:only",
  61                 "-processor", "T8142931",
  62                 "-processorpath", testClasses);
  63             StringWriter out = new StringWriter();
  64             JavacTask task = (JavacTask)tool.getTask(out, fm, dl, opts, null, files);
  65             task.call();
  66             String s = out.toString();
  67             System.err.print(s);
  68             System.err.println(dl.count + " diagnostics; " + s.length() + " characters");
  69             if (dl.count != 0 || s.length() != 0)
  70                 throw new AssertionError("unexpected output from compiler");
  71         }
  72     }
  73 
  74     @Override
  75     public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {
  76         Set<? extends Element> set = roundEnv.getRootElements();
  77         for (Element element : set) {
  78             Collection<VariableElement> fields = ElementFilter.fieldsIn(((TypeElement) element).getEnclosedElements());
  79             for (VariableElement field : fields) {
  80                 TypeMirror listType = field.asType();
  81                 List<? extends TypeMirror> typeArgs = ((DeclaredType) listType).getTypeArguments();
  82                 TypeMirror arg = typeArgs.get(0);
  83                 String erasure = processingEnv.getTypeUtils().erasure(arg).toString();
  84                 if (!erasure.equals("javax.xml.namespace.QName"))
  85                     throw new AssertionError("Wrong Erasure: " + erasure);
  86             }
  87         }
  88         return false;
  89     }
  90 
  91     @Override
  92     public SourceVersion getSupportedSourceVersion() {
  93         return SourceVersion.latest();
  94     }
  95 
  96     static class MyDiagListener implements DiagnosticListener {
  97         public void report(Diagnostic d) {
  98             System.err.println(d);
  99             count++;
 100         }
 101 
 102         public int count;
 103     }
 104 }
 105