| /* |
| * 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 7086601 |
| * @summary Error message bug: cause for method mismatch is 'null' |
| * @modules jdk.compiler |
| */ |
| |
| 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(); |
| try (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; |
| } |
| } |
| } |
| } |