Mercurial > jdk8-mips64-public > langtools / file comparison
comparison: test/tools/javac/generics/diamond/7030150/GenericConstructorAndDiamondTest.java
test/tools/javac/generics/diamond/7030150/GenericConstructorAndDiamondTest.java
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| 1 /* | |
| 2 * Copyright (c) 2011, 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 7030150 7039931 | |
| 27 * @summary Type inference for generic instance creation failed for formal type parameter | |
| 28 */ | |
| 29 | |
| 30 import com.sun.source.util.JavacTask; | |
| 31 import java.net.URI; | |
| 32 import java.util.Arrays; | |
| 33 import javax.tools.Diagnostic; | |
| 34 import javax.tools.JavaCompiler; | |
| 35 import javax.tools.JavaFileObject; | |
| 36 import javax.tools.SimpleJavaFileObject; | |
| 37 import javax.tools.StandardJavaFileManager; | |
| 38 import javax.tools.ToolProvider; | |
| 39 | |
| 40 public class GenericConstructorAndDiamondTest { | |
| 41 | |
| 42 enum BoundKind { | |
| 43 NO_BOUND(""), | |
| 44 STRING_BOUND("extends String"), | |
| 45 INTEGER_BOUND("extends Integer"); | |
| 46 | |
| 47 String boundStr; | |
| 48 | |
| 49 private BoundKind(String boundStr) { | |
| 50 this.boundStr = boundStr; | |
| 51 } | |
| 52 | |
| 53 boolean matches(TypeArgumentKind tak) { | |
| 54 switch (tak) { | |
| 55 case NONE: return true; | |
| 56 case STRING: return this != INTEGER_BOUND; | |
| 57 case INTEGER: return this != STRING_BOUND; | |
| 58 default: return false; | |
| 59 } | |
| 60 } | |
| 61 } | |
| 62 | |
| 63 enum ConstructorKind { | |
| 64 NON_GENERIC("Foo(Object o) {}"), | |
| 65 GENERIC_NO_BOUND("<T> Foo(T t) {}"), | |
| 66 GENERIC_STRING_BOUND("<T extends String> Foo(T t) {}"), | |
| 67 GENERIC_INTEGER_BOUND("<T extends Integer> Foo(T t) {}"); | |
| 68 | |
| 69 String constrStr; | |
| 70 | |
| 71 private ConstructorKind(String constrStr) { | |
| 72 this.constrStr = constrStr; | |
| 73 } | |
| 74 | |
| 75 boolean matches(ArgumentKind ak) { | |
| 76 switch (ak) { | |
| 77 case STRING: return this != GENERIC_INTEGER_BOUND; | |
| 78 case INTEGER: return this != GENERIC_STRING_BOUND; | |
| 79 default: return false; | |
| 80 } | |
| 81 } | |
| 82 } | |
| 83 | |
| 84 enum TypeArgArity { | |
| 85 ONE(1), | |
| 86 TWO(2), | |
| 87 THREE(3); | |
| 88 | |
| 89 int n; | |
| 90 | |
| 91 private TypeArgArity(int n) { | |
| 92 this.n = n; | |
| 93 } | |
| 94 } | |
| 95 | |
| 96 enum TypeArgumentKind { | |
| 97 NONE(""), | |
| 98 STRING("String"), | |
| 99 INTEGER("Integer"); | |
| 100 | |
| 101 String typeargStr; | |
| 102 | |
| 103 private TypeArgumentKind(String typeargStr) { | |
| 104 this.typeargStr = typeargStr; | |
| 105 } | |
| 106 | |
| 107 String getArgs(TypeArgArity arity) { | |
| 108 if (this == NONE) return ""; | |
| 109 else { | |
| 110 StringBuilder buf = new StringBuilder(); | |
| 111 String sep = ""; | |
| 112 for (int i = 0 ; i < arity.n ; i++) { | |
| 113 buf.append(sep); | |
| 114 buf.append(typeargStr); | |
| 115 sep = ","; | |
| 116 } | |
| 117 return "<" + buf.toString() + ">"; | |
| 118 } | |
| 119 } | |
| 120 | |
| 121 boolean matches(ArgumentKind ak) { | |
| 122 switch (ak) { | |
| 123 case STRING: return this != INTEGER; | |
| 124 case INTEGER: return this != STRING; | |
| 125 default: return false; | |
| 126 } | |
| 127 } | |
| 128 | |
| 129 boolean matches(TypeArgumentKind other) { | |
| 130 switch (other) { | |
| 131 case STRING: return this != INTEGER; | |
| 132 case INTEGER: return this != STRING; | |
| 133 default: return true; | |
| 134 } | |
| 135 } | |
| 136 } | |
| 137 | |
| 138 enum ArgumentKind { | |
| 139 STRING("\"\""), | |
| 140 INTEGER("1"); | |
| 141 | |
| 142 String argStr; | |
| 143 | |
| 144 private ArgumentKind(String argStr) { | |
| 145 this.argStr = argStr; | |
| 146 } | |
| 147 } | |
| 148 | |
| 149 public static void main(String... args) throws Exception { | |
| 150 | |
| 151 //create default shared JavaCompiler - reused across multiple compilations | |
| 152 JavaCompiler comp = ToolProvider.getSystemJavaCompiler(); | |
| 153 StandardJavaFileManager fm = comp.getStandardFileManager(null, null, null); | |
| 154 | |
| 155 for (BoundKind boundKind : BoundKind.values()) { | |
| 156 for (ConstructorKind constructorKind : ConstructorKind.values()) { | |
| 157 for (TypeArgumentKind declArgKind : TypeArgumentKind.values()) { | |
| 158 for (TypeArgArity arity : TypeArgArity.values()) { | |
| 159 for (TypeArgumentKind useArgKind : TypeArgumentKind.values()) { | |
| 160 for (TypeArgumentKind diamondArgKind : TypeArgumentKind.values()) { | |
| 161 for (ArgumentKind argKind : ArgumentKind.values()) { | |
| 162 new GenericConstructorAndDiamondTest(boundKind, constructorKind, | |
| 163 declArgKind, arity, useArgKind, diamondArgKind, argKind).run(comp, fm); | |
| 164 } | |
| 165 } | |
| 166 } | |
| 167 } | |
| 168 } | |
| 169 } | |
| 170 } | |
| 171 } | |
| 172 | |
| 173 BoundKind boundKind; | |
| 174 ConstructorKind constructorKind; | |
| 175 TypeArgumentKind declTypeArgumentKind; | |
| 176 TypeArgArity useTypeArgArity; | |
| 177 TypeArgumentKind useTypeArgumentKind; | |
| 178 TypeArgumentKind diamondTypeArgumentKind; | |
| 179 ArgumentKind argumentKind; | |
| 180 JavaSource source; | |
| 181 DiagnosticChecker diagChecker; | |
| 182 | |
| 183 GenericConstructorAndDiamondTest(BoundKind boundKind, ConstructorKind constructorKind, | |
| 184 TypeArgumentKind declTypeArgumentKind, TypeArgArity useTypeArgArity, | |
| 185 TypeArgumentKind useTypeArgumentKind, TypeArgumentKind diamondTypeArgumentKind, | |
| 186 ArgumentKind argumentKind) { | |
| 187 this.boundKind = boundKind; | |
| 188 this.constructorKind = constructorKind; | |
| 189 this.declTypeArgumentKind = declTypeArgumentKind; | |
| 190 this.useTypeArgArity = useTypeArgArity; | |
| 191 this.useTypeArgumentKind = useTypeArgumentKind; | |
| 192 this.diamondTypeArgumentKind = diamondTypeArgumentKind; | |
| 193 this.argumentKind = argumentKind; | |
| 194 this.source = new JavaSource(); | |
| 195 this.diagChecker = new DiagnosticChecker(); | |
| 196 } | |
| 197 | |
| 198 class JavaSource extends SimpleJavaFileObject { | |
| 199 | |
| 200 String template = "class Foo<X #BK> {\n" + | |
| 201 "#CK\n" + | |
| 202 "}\n" + | |
| 203 "class Test {\n" + | |
| 204 "void test() {\n" + | |
| 205 "Foo#TA1 f = new #TA2 Foo<#TA3>(#A);\n" + | |
| 206 "}\n" + | |
| 207 "}\n"; | |
| 208 | |
| 209 String source; | |
| 210 | |
| 211 public JavaSource() { | |
| 212 super(URI.create("myfo:/Test.java"), JavaFileObject.Kind.SOURCE); | |
| 213 source = template.replace("#BK", boundKind.boundStr). | |
| 214 replace("#CK", constructorKind.constrStr) | |
| 215 .replace("#TA1", declTypeArgumentKind.getArgs(TypeArgArity.ONE)) | |
| 216 .replace("#TA2", useTypeArgumentKind.getArgs(useTypeArgArity)) | |
| 217 .replace("#TA3", diamondTypeArgumentKind.typeargStr) | |
| 218 .replace("#A", argumentKind.argStr); | |
| 219 } | |
| 220 | |
| 221 @Override | |
| 222 public CharSequence getCharContent(boolean ignoreEncodingErrors) { | |
| 223 return source; | |
| 224 } | |
| 225 } | |
| 226 | |
| 227 void run(JavaCompiler tool, StandardJavaFileManager fm) throws Exception { | |
| 228 JavacTask ct = (JavacTask)tool.getTask(null, fm, diagChecker, | |
| 229 null, null, Arrays.asList(source)); | |
| 230 ct.analyze(); | |
| 231 check(); | |
| 232 } | |
| 233 | |
| 234 void check() { | |
| 235 boolean badActual = !constructorKind.matches(argumentKind); | |
| 236 | |
| 237 boolean badArity = constructorKind != ConstructorKind.NON_GENERIC && | |
| 238 useTypeArgumentKind != TypeArgumentKind.NONE && | |
| 239 useTypeArgArity != TypeArgArity.ONE; | |
| 240 | |
| 241 boolean badMethodTypeArg = constructorKind != ConstructorKind.NON_GENERIC && | |
| 242 !useTypeArgumentKind.matches(argumentKind); | |
| 243 | |
| 244 boolean badExplicitParams = (useTypeArgumentKind != TypeArgumentKind.NONE && | |
| 245 diamondTypeArgumentKind == TypeArgumentKind.NONE) || | |
| 246 !boundKind.matches(diamondTypeArgumentKind); | |
| 247 | |
| 248 boolean badGenericType = !boundKind.matches(declTypeArgumentKind) || | |
| 249 !diamondTypeArgumentKind.matches(declTypeArgumentKind); | |
| 250 | |
| 251 boolean shouldFail = badActual || badArity || | |
| 252 badMethodTypeArg || badExplicitParams || badGenericType; | |
| 253 | |
| 254 if (shouldFail != diagChecker.errorFound) { | |
| 255 throw new Error("invalid diagnostics for source:\n" + | |
| 256 source.getCharContent(true) + | |
| 257 "\nFound error: " + diagChecker.errorFound + | |
| 258 "\nExpected error: " + shouldFail); | |
| 259 } | |
| 260 } | |
| 261 | |
| 262 static class DiagnosticChecker implements javax.tools.DiagnosticListener<JavaFileObject> { | |
| 263 | |
| 264 boolean errorFound; | |
| 265 | |
| 266 public void report(Diagnostic<? extends JavaFileObject> diagnostic) { | |
| 267 if (diagnostic.getKind() == Diagnostic.Kind.ERROR) { | |
| 268 errorFound = true; | |
| 269 } | |
| 270 } | |
| 271 } | |
| 272 } |
