Mercurial > jdk8-mips64-public > langtools / file revision

 /*

  * 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 7086601

  * @summary Error message bug: cause for method mismatch is 'null'

  */

 import com.sun.source.util.JavacTask;

 import java.net.URI;

 import java.util.Arrays;

 import java.util.ArrayList;

 import javax.tools.Diagnostic;

 import javax.tools.JavaCompiler;

 import javax.tools.JavaFileObject;

 import javax.tools.SimpleJavaFileObject;

 import javax.tools.StandardJavaFileManager;

 import javax.tools.ToolProvider;

 public class T7086601b {

     static int checkCount = 0;

     enum TypeKind {

         STRING("String", false),

         INTEGER("Integer", false),

         NUMBER("Number", false),

         SERIALIZABLE("java.io.Serializable", true),

         CLONEABLE("Cloneable", true),

         X("X", false),

         Y("Y", false),

         Z("Z", false);

         String typeStr;

         boolean isInterface;

         private TypeKind(String typeStr, boolean isInterface) {

             this.typeStr = typeStr;

             this.isInterface = isInterface;

         }

         boolean isSubtypeof(TypeKind other) {

             return (this == INTEGER && other == NUMBER ||

                     this == Z && other == Y ||

                     this == other);

         }

     }

     enum MethodCallKind {

         ARITY_ONE("m(a1);", 1),

         ARITY_TWO("m(a1, a2);", 2),

         ARITY_THREE("m(a1, a2, a3);", 3);

         String invokeString;

         int arity;

         private MethodCallKind(String invokeString, int arity) {

             this.invokeString = invokeString;

             this.arity = arity;

         }

     }

     public static void main(String... args) throws Exception {

         //create default shared JavaCompiler - reused across multiple compilations

         JavaCompiler comp = ToolProvider.getSystemJavaCompiler();

         StandardJavaFileManager fm = comp.getStandardFileManager(null, null, null);

         for (TypeKind a1 : TypeKind.values()) {

             for (TypeKind a2 : TypeKind.values()) {

                 for (TypeKind a3 : TypeKind.values()) {

                     for (MethodCallKind mck : MethodCallKind.values()) {

                         new T7086601b(a1, a2, a3, mck).run(comp, fm);

                     }

                 }

             }

         }

         System.out.println("Total check executed: " + checkCount);

     }

     TypeKind a1;

     TypeKind a2;

     TypeKind a3;

     MethodCallKind mck;

     JavaSource source;

     DiagnosticChecker diagChecker;

     T7086601b(TypeKind a1, TypeKind a2, TypeKind a3, MethodCallKind mck) {

         this.a1 = a1;

         this.a2 = a2;

         this.a3 = a3;

         this.mck = mck;

         this.source = new JavaSource();

         this.diagChecker = new DiagnosticChecker();

     }

     class JavaSource extends SimpleJavaFileObject {

         final String bodyTemplate = "import java.util.List;\n"+

                               "class Test {\n" +

                               "   <Z> void m(List<? super Z> l1) { }\n" +

                               "   <Z> void m(List<? super Z> l1, List<? super Z> l2) { }\n" +

                               "   <Z> void m(List<? super Z> l1, List<? super Z> l2, List<? super Z> l3) { }\n" +

                               "   <X,Y,Z extends Y> void test(List<#A1> a1, List<#A2> a2, List<#A3> a3) { #MC } }";

         String source;

         public JavaSource() {

             super(URI.create("myfo:/Test.java"), JavaFileObject.Kind.SOURCE);

             source = bodyTemplate.replace("#A1", a1.typeStr)

                              .replace("#A2", a2.typeStr).replace("#A3", a3.typeStr)

                              .replace("#MC", mck.invokeString);

         }

         @Override

         public CharSequence getCharContent(boolean ignoreEncodingErrors) {

             return source;

         }

     }

     void run(JavaCompiler tool, StandardJavaFileManager fm) throws Exception {

         JavacTask ct = (JavacTask)tool.getTask(null, fm, diagChecker,

                 null, null, Arrays.asList(source));

         try {

             ct.analyze();

         } catch (Throwable ex) {

             throw new AssertionError("Error thrown when compiling the following code:\n" + source.getCharContent(true));

         }

         check();

     }

     void check() {

         checkCount++;

         boolean errorExpected = false;

         if (mck.arity > 1) {

             TypeKind[] argtypes = { a1, a2, a3 };

             ArrayList<TypeKind> classes = new ArrayList<>();

             for (int i = 0 ; i < mck.arity ; i ++ ) {

                 if (!argtypes[i].isInterface) {

                     classes.add(argtypes[i]);

                 }

             }

             boolean glb_exists = true;

             for (TypeKind arg_i : classes) {

                 glb_exists = true;

                 for (TypeKind arg_j : classes) {

                     if (!arg_i.isSubtypeof(arg_j)) {

                         glb_exists = false;

                         break;

                     }

                 }

                 if (glb_exists) break;

             }

             errorExpected = !glb_exists;

         }

         if (errorExpected != diagChecker.errorFound) {

             throw new Error("invalid diagnostics for source:\n" +

                 source.getCharContent(true) +

                 "\nFound error: " + diagChecker.errorFound +

                 "\nExpected error: " + errorExpected);

         }

     }

     static class DiagnosticChecker implements javax.tools.DiagnosticListener<JavaFileObject> {

         boolean errorFound;

         public void report(Diagnostic<? extends JavaFileObject> diagnostic) {

             if (diagnostic.getKind() == Diagnostic.Kind.ERROR) {

                 errorFound = true;

             }

         }

     }

 }