| /* |
| * 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 7030150 7039931 |
| * @summary Type inference for generic instance creation failed for formal type parameter |
| * @modules jdk.compiler |
| */ |
| |
| import com.sun.source.util.JavacTask; |
| import java.net.URI; |
| import java.util.Arrays; |
| 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 GenericConstructorAndDiamondTest { |
| |
| enum BoundKind { |
| NO_BOUND(""), |
| STRING_BOUND("extends String"), |
| INTEGER_BOUND("extends Integer"); |
| |
| String boundStr; |
| |
| private BoundKind(String boundStr) { |
| this.boundStr = boundStr; |
| } |
| |
| boolean matches(TypeArgumentKind tak) { |
| switch (tak) { |
| case NONE: return true; |
| case STRING: return this != INTEGER_BOUND; |
| case INTEGER: return this != STRING_BOUND; |
| default: return false; |
| } |
| } |
| } |
| |
| enum ConstructorKind { |
| NON_GENERIC("Foo(Object o) {}"), |
| GENERIC_NO_BOUND("<T> Foo(T t) {}"), |
| GENERIC_STRING_BOUND("<T extends String> Foo(T t) {}"), |
| GENERIC_INTEGER_BOUND("<T extends Integer> Foo(T t) {}"); |
| |
| String constrStr; |
| |
| private ConstructorKind(String constrStr) { |
| this.constrStr = constrStr; |
| } |
| |
| boolean matches(ArgumentKind ak) { |
| switch (ak) { |
| case STRING: return this != GENERIC_INTEGER_BOUND; |
| case INTEGER: return this != GENERIC_STRING_BOUND; |
| default: return false; |
| } |
| } |
| } |
| |
| enum TypeArgArity { |
| ONE(1), |
| TWO(2), |
| THREE(3); |
| |
| int n; |
| |
| private TypeArgArity(int n) { |
| this.n = n; |
| } |
| } |
| |
| enum TypeArgumentKind { |
| NONE(""), |
| STRING("String"), |
| INTEGER("Integer"); |
| |
| String typeargStr; |
| |
| private TypeArgumentKind(String typeargStr) { |
| this.typeargStr = typeargStr; |
| } |
| |
| String getArgs(TypeArgArity arity) { |
| if (this == NONE) return ""; |
| else { |
| StringBuilder buf = new StringBuilder(); |
| String sep = ""; |
| for (int i = 0 ; i < arity.n ; i++) { |
| buf.append(sep); |
| buf.append(typeargStr); |
| sep = ","; |
| } |
| return "<" + buf.toString() + ">"; |
| } |
| } |
| |
| boolean matches(ArgumentKind ak) { |
| switch (ak) { |
| case STRING: return this != INTEGER; |
| case INTEGER: return this != STRING; |
| default: return false; |
| } |
| } |
| |
| boolean matches(TypeArgumentKind other) { |
| switch (other) { |
| case STRING: return this != INTEGER; |
| case INTEGER: return this != STRING; |
| default: return true; |
| } |
| } |
| } |
| |
| enum ArgumentKind { |
| STRING("\"\""), |
| INTEGER("1"); |
| |
| String argStr; |
| |
| private ArgumentKind(String argStr) { |
| this.argStr = argStr; |
| } |
| } |
| |
| 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 (BoundKind boundKind : BoundKind.values()) { |
| for (ConstructorKind constructorKind : ConstructorKind.values()) { |
| for (TypeArgumentKind declArgKind : TypeArgumentKind.values()) { |
| for (TypeArgArity arity : TypeArgArity.values()) { |
| for (TypeArgumentKind useArgKind : TypeArgumentKind.values()) { |
| for (TypeArgumentKind diamondArgKind : TypeArgumentKind.values()) { |
| for (ArgumentKind argKind : ArgumentKind.values()) { |
| new GenericConstructorAndDiamondTest(boundKind, constructorKind, |
| declArgKind, arity, useArgKind, diamondArgKind, argKind).run(comp, fm); |
| } |
| } |
| } |
| } |
| } |
| } |
| } |
| } |
| } |
| |
| BoundKind boundKind; |
| ConstructorKind constructorKind; |
| TypeArgumentKind declTypeArgumentKind; |
| TypeArgArity useTypeArgArity; |
| TypeArgumentKind useTypeArgumentKind; |
| TypeArgumentKind diamondTypeArgumentKind; |
| ArgumentKind argumentKind; |
| JavaSource source; |
| DiagnosticChecker diagChecker; |
| |
| GenericConstructorAndDiamondTest(BoundKind boundKind, ConstructorKind constructorKind, |
| TypeArgumentKind declTypeArgumentKind, TypeArgArity useTypeArgArity, |
| TypeArgumentKind useTypeArgumentKind, TypeArgumentKind diamondTypeArgumentKind, |
| ArgumentKind argumentKind) { |
| this.boundKind = boundKind; |
| this.constructorKind = constructorKind; |
| this.declTypeArgumentKind = declTypeArgumentKind; |
| this.useTypeArgArity = useTypeArgArity; |
| this.useTypeArgumentKind = useTypeArgumentKind; |
| this.diamondTypeArgumentKind = diamondTypeArgumentKind; |
| this.argumentKind = argumentKind; |
| this.source = new JavaSource(); |
| this.diagChecker = new DiagnosticChecker(); |
| } |
| |
| class JavaSource extends SimpleJavaFileObject { |
| |
| String template = "class Foo<X #BK> {\n" + |
| "#CK\n" + |
| "}\n" + |
| "class Test {\n" + |
| "void test() {\n" + |
| "Foo#TA1 f = new #TA2 Foo<#TA3>(#A);\n" + |
| "}\n" + |
| "}\n"; |
| |
| String source; |
| |
| public JavaSource() { |
| super(URI.create("myfo:/Test.java"), JavaFileObject.Kind.SOURCE); |
| source = template.replace("#BK", boundKind.boundStr). |
| replace("#CK", constructorKind.constrStr) |
| .replace("#TA1", declTypeArgumentKind.getArgs(TypeArgArity.ONE)) |
| .replace("#TA2", useTypeArgumentKind.getArgs(useTypeArgArity)) |
| .replace("#TA3", diamondTypeArgumentKind.typeargStr) |
| .replace("#A", argumentKind.argStr); |
| } |
| |
| @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)); |
| ct.analyze(); |
| check(); |
| } |
| |
| void check() { |
| boolean badActual = !constructorKind.matches(argumentKind); |
| |
| boolean badArity = constructorKind != ConstructorKind.NON_GENERIC && |
| useTypeArgumentKind != TypeArgumentKind.NONE && |
| useTypeArgArity != TypeArgArity.ONE; |
| |
| boolean badMethodTypeArg = constructorKind != ConstructorKind.NON_GENERIC && |
| !useTypeArgumentKind.matches(argumentKind); |
| |
| boolean badExplicitParams = (useTypeArgumentKind != TypeArgumentKind.NONE && |
| diamondTypeArgumentKind == TypeArgumentKind.NONE) || |
| !boundKind.matches(diamondTypeArgumentKind); |
| |
| boolean badGenericType = !boundKind.matches(declTypeArgumentKind) || |
| !diamondTypeArgumentKind.matches(declTypeArgumentKind); |
| |
| boolean shouldFail = badActual || badArity || |
| badMethodTypeArg || badExplicitParams || badGenericType; |
| |
| if (shouldFail != diagChecker.errorFound) { |
| throw new Error("invalid diagnostics for source:\n" + |
| source.getCharContent(true) + |
| "\nFound error: " + diagChecker.errorFound + |
| "\nExpected error: " + shouldFail); |
| } |
| } |
| |
| 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; |
| } |
| } |
| } |
| } |