mcimadamore@1087: /*
mcimadamore@1087:  * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
mcimadamore@1087:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
mcimadamore@1087:  *
mcimadamore@1087:  * This code is free software; you can redistribute it and/or modify it
mcimadamore@1087:  * under the terms of the GNU General Public License version 2 only, as
mcimadamore@1087:  * published by the Free Software Foundation.
mcimadamore@1087:  *
mcimadamore@1087:  * This code is distributed in the hope that it will be useful, but WITHOUT
mcimadamore@1087:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
mcimadamore@1087:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
mcimadamore@1087:  * version 2 for more details (a copy is included in the LICENSE file that
mcimadamore@1087:  * accompanied this code).
mcimadamore@1087:  *
mcimadamore@1087:  * You should have received a copy of the GNU General Public License version
mcimadamore@1087:  * 2 along with this work; if not, write to the Free Software Foundation,
mcimadamore@1087:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
mcimadamore@1087:  *
mcimadamore@1087:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
mcimadamore@1087:  * or visit www.oracle.com if you need additional information or have any
mcimadamore@1087:  * questions.
mcimadamore@1087:  */
mcimadamore@1087: 
mcimadamore@1087: /*
mcimadamore@1087:  * @test
mcimadamore@1087:  * @bug 7086601
mcimadamore@1087:  * @summary Error message bug: cause for method mismatch is 'null'
mcimadamore@1087:  */
mcimadamore@1087: 
mcimadamore@1087: import com.sun.source.util.JavacTask;
mcimadamore@1087: import java.net.URI;
mcimadamore@1087: import java.util.Arrays;
mcimadamore@1087: import java.util.ArrayList;
mcimadamore@1087: import javax.tools.Diagnostic;
mcimadamore@1087: import javax.tools.JavaCompiler;
mcimadamore@1087: import javax.tools.JavaFileObject;
mcimadamore@1087: import javax.tools.SimpleJavaFileObject;
mcimadamore@1087: import javax.tools.StandardJavaFileManager;
mcimadamore@1087: import javax.tools.ToolProvider;
mcimadamore@1087: 
mcimadamore@1087: 
mcimadamore@1087: public class T7086601b {
mcimadamore@1087: 
mcimadamore@1087:     static int checkCount = 0;
mcimadamore@1087: 
mcimadamore@1087:     enum TypeKind {
mcimadamore@1087:         STRING("String", false),
mcimadamore@1087:         INTEGER("Integer", false),
mcimadamore@1087:         NUMBER("Number", false),
mcimadamore@1087:         SERIALIZABLE("java.io.Serializable", true),
mcimadamore@1087:         CLONEABLE("Cloneable", true),
mcimadamore@1087:         X("X", false),
mcimadamore@1087:         Y("Y", false),
mcimadamore@1087:         Z("Z", false);
mcimadamore@1087: 
mcimadamore@1087:         String typeStr;
mcimadamore@1087:         boolean isInterface;
mcimadamore@1087: 
mcimadamore@1087:         private TypeKind(String typeStr, boolean isInterface) {
mcimadamore@1087:             this.typeStr = typeStr;
mcimadamore@1087:             this.isInterface = isInterface;
mcimadamore@1087:         }
mcimadamore@1087: 
mcimadamore@1087:         boolean isSubtypeof(TypeKind other) {
mcimadamore@1087:             return (this == INTEGER && other == NUMBER ||
mcimadamore@1087:                     this == Z && other == Y ||
mcimadamore@1087:                     this == other);
mcimadamore@1087:         }
mcimadamore@1087:     }
mcimadamore@1087: 
mcimadamore@1087:     enum MethodCallKind {
mcimadamore@1087:         ARITY_ONE("m(a1);", 1),
mcimadamore@1087:         ARITY_TWO("m(a1, a2);", 2),
mcimadamore@1087:         ARITY_THREE("m(a1, a2, a3);", 3);
mcimadamore@1087: 
mcimadamore@1087:         String invokeString;
mcimadamore@1087:         int arity;
mcimadamore@1087: 
mcimadamore@1087:         private MethodCallKind(String invokeString, int arity) {
mcimadamore@1087:             this.invokeString = invokeString;
mcimadamore@1087:             this.arity = arity;
mcimadamore@1087:         }
mcimadamore@1087:     }
mcimadamore@1087: 
mcimadamore@1087:     public static void main(String... args) throws Exception {
mcimadamore@1087: 
mcimadamore@1087:         //create default shared JavaCompiler - reused across multiple compilations
mcimadamore@1087:         JavaCompiler comp = ToolProvider.getSystemJavaCompiler();
mcimadamore@1087:         StandardJavaFileManager fm = comp.getStandardFileManager(null, null, null);
mcimadamore@1087: 
mcimadamore@1087:         for (TypeKind a1 : TypeKind.values()) {
mcimadamore@1087:             for (TypeKind a2 : TypeKind.values()) {
mcimadamore@1087:                 for (TypeKind a3 : TypeKind.values()) {
mcimadamore@1087:                     for (MethodCallKind mck : MethodCallKind.values()) {
mcimadamore@1087:                         new T7086601b(a1, a2, a3, mck).run(comp, fm);
mcimadamore@1087:                     }
mcimadamore@1087:                 }
mcimadamore@1087:             }
mcimadamore@1087:         }
mcimadamore@1087:         System.out.println("Total check executed: " + checkCount);
mcimadamore@1087:     }
mcimadamore@1087: 
mcimadamore@1087:     TypeKind a1;
mcimadamore@1087:     TypeKind a2;
mcimadamore@1087:     TypeKind a3;
mcimadamore@1087:     MethodCallKind mck;
mcimadamore@1087:     JavaSource source;
mcimadamore@1087:     DiagnosticChecker diagChecker;
mcimadamore@1087: 
mcimadamore@1087:     T7086601b(TypeKind a1, TypeKind a2, TypeKind a3, MethodCallKind mck) {
mcimadamore@1087:         this.a1 = a1;
mcimadamore@1087:         this.a2 = a2;
mcimadamore@1087:         this.a3 = a3;
mcimadamore@1087:         this.mck = mck;
mcimadamore@1087:         this.source = new JavaSource();
mcimadamore@1087:         this.diagChecker = new DiagnosticChecker();
mcimadamore@1087:     }
mcimadamore@1087: 
mcimadamore@1087:     class JavaSource extends SimpleJavaFileObject {
mcimadamore@1087: 
mcimadamore@1087:         final String bodyTemplate = "import java.util.List;\n"+
mcimadamore@1087:                               "class Test {\n" +
mcimadamore@1087:                               "   <Z> void m(List<? super Z> l1) { }\n" +
mcimadamore@1087:                               "   <Z> void m(List<? super Z> l1, List<? super Z> l2) { }\n" +
mcimadamore@1087:                               "   <Z> void m(List<? super Z> l1, List<? super Z> l2, List<? super Z> l3) { }\n" +
mcimadamore@1087:                               "   <X,Y,Z extends Y> void test(List<#A1> a1, List<#A2> a2, List<#A3> a3) { #MC } }";
mcimadamore@1087: 
mcimadamore@1087:         String source;
mcimadamore@1087: 
mcimadamore@1087:         public JavaSource() {
mcimadamore@1087:             super(URI.create("myfo:/Test.java"), JavaFileObject.Kind.SOURCE);
mcimadamore@1087:             source = bodyTemplate.replace("#A1", a1.typeStr)
mcimadamore@1087:                              .replace("#A2", a2.typeStr).replace("#A3", a3.typeStr)
mcimadamore@1087:                              .replace("#MC", mck.invokeString);
mcimadamore@1087:         }
mcimadamore@1087: 
mcimadamore@1087:         @Override
mcimadamore@1087:         public CharSequence getCharContent(boolean ignoreEncodingErrors) {
mcimadamore@1087:             return source;
mcimadamore@1087:         }
mcimadamore@1087:     }
mcimadamore@1087: 
mcimadamore@1087:     void run(JavaCompiler tool, StandardJavaFileManager fm) throws Exception {
mcimadamore@1087:         JavacTask ct = (JavacTask)tool.getTask(null, fm, diagChecker,
mcimadamore@1087:                 null, null, Arrays.asList(source));
mcimadamore@1087:         try {
mcimadamore@1087:             ct.analyze();
mcimadamore@1087:         } catch (Throwable ex) {
jjg@1169:             throw new AssertionError("Error thrown when compiling the following code:\n" + source.getCharContent(true));
mcimadamore@1087:         }
mcimadamore@1087:         check();
mcimadamore@1087:     }
mcimadamore@1087: 
mcimadamore@1087:     void check() {
mcimadamore@1087:         checkCount++;
mcimadamore@1087: 
mcimadamore@1087:         boolean errorExpected = false;
mcimadamore@1087: 
mcimadamore@1087:         if (mck.arity > 1) {
mcimadamore@1087:             TypeKind[] argtypes = { a1, a2, a3 };
mcimadamore@1087:             ArrayList<TypeKind> classes = new ArrayList<>();
mcimadamore@1087:             for (int i = 0 ; i < mck.arity ; i ++ ) {
mcimadamore@1087:                 if (!argtypes[i].isInterface) {
mcimadamore@1087:                     classes.add(argtypes[i]);
mcimadamore@1087:                 }
mcimadamore@1087:             }
mcimadamore@1087:             boolean glb_exists = true;
mcimadamore@1087:             for (TypeKind arg_i : classes) {
mcimadamore@1087:                 glb_exists = true;
mcimadamore@1087:                 for (TypeKind arg_j : classes) {
mcimadamore@1087:                     if (!arg_i.isSubtypeof(arg_j)) {
mcimadamore@1087:                         glb_exists = false;
mcimadamore@1087:                         break;
mcimadamore@1087:                     }
mcimadamore@1087:                 }
mcimadamore@1087:                 if (glb_exists) break;
mcimadamore@1087:             }
mcimadamore@1087:             errorExpected = !glb_exists;
mcimadamore@1087:         }
mcimadamore@1087: 
mcimadamore@1087:         if (errorExpected != diagChecker.errorFound) {
mcimadamore@1087:             throw new Error("invalid diagnostics for source:\n" +
mcimadamore@1087:                 source.getCharContent(true) +
mcimadamore@1087:                 "\nFound error: " + diagChecker.errorFound +
mcimadamore@1087:                 "\nExpected error: " + errorExpected);
mcimadamore@1087:         }
mcimadamore@1087:     }
mcimadamore@1087: 
mcimadamore@1087:     static class DiagnosticChecker implements javax.tools.DiagnosticListener<JavaFileObject> {
mcimadamore@1087: 
mcimadamore@1087:         boolean errorFound;
mcimadamore@1087: 
mcimadamore@1087:         public void report(Diagnostic<? extends JavaFileObject> diagnostic) {
mcimadamore@1087:             if (diagnostic.getKind() == Diagnostic.Kind.ERROR) {
mcimadamore@1087:                 errorFound = true;
mcimadamore@1087:             }
mcimadamore@1087:         }
mcimadamore@1087:     }
mcimadamore@1087: }