1/* 2 * Copyright (c) 2012, 2015, 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 7192245 8005851 8005166 8071453 27 * @summary Automatic test for checking set of allowed modifiers on interface methods 28 * @modules jdk.compiler 29 */ 30 31import com.sun.source.util.JavacTask; 32import java.net.URI; 33import java.util.Arrays; 34import java.util.List; 35import javax.tools.Diagnostic; 36import javax.tools.JavaCompiler; 37import javax.tools.JavaFileObject; 38import javax.tools.SimpleJavaFileObject; 39import javax.tools.StandardJavaFileManager; 40import javax.tools.ToolProvider; 41 42 43public class TestDefaultMethodsSyntax { 44 45 static int checkCount = 0; 46 47 enum VersionKind { 48 PRE_LAMBDA("7"), 49 LAMBDA("8"), 50 POST_LAMBDA("9"); 51 52 String versionString; 53 54 VersionKind(String versionString) { 55 this.versionString = versionString; 56 } 57 58 List<String> getOptions() { 59 return Arrays.asList("-XDallowStaticInterfaceMethods", "-source", versionString); 60 } 61 } 62 63 enum ModifierKind { 64 NONE(""), 65 PUBLIC("public"), 66 PROTECTED("protected"), 67 PRIVATE("private"), 68 ABSTRACT("abstract"), 69 STATIC("static"), 70 NATIVE("native"), 71 SYNCHRONIZED("synchronized"), 72 FINAL("final"), 73 STRICTFP("strictfp"), 74 DEFAULT("default"); 75 76 String modStr; 77 78 private ModifierKind(String modStr) { 79 this.modStr = modStr; 80 } 81 82 static boolean intersect(ModifierKind mk, ModifierKind... mks) { 83 for (ModifierKind mk2 : mks) { 84 if (mk == mk2) return true; 85 } 86 return false; 87 } 88 89 static boolean compatible(MethodKind mk, ModifierKind mod1, ModifierKind mod2, EnclosingKind ek) { 90 if (intersect(ABSTRACT, mod1, mod2) || intersect(NATIVE, mod1, mod2)) { 91 return mk == MethodKind.NO_BODY; 92 } else if (intersect(DEFAULT, mod1, mod2) || intersect(STATIC, mod1, mod2) 93 || intersect(PRIVATE, mod1, mod2)) { 94 return mk == MethodKind.BODY; 95 } else { 96 return ek == EnclosingKind.INTERFACE ? 97 mk == MethodKind.NO_BODY : mk == MethodKind.BODY; 98 } 99 } 100 101 boolean compatible(EnclosingKind ek) { 102 switch (this) { 103 case PROTECTED: 104 return ek != EnclosingKind.INTERFACE; 105 default: 106 return true; 107 } 108 } 109 110 static boolean compatible(ModifierKind m1, ModifierKind m2, EnclosingKind ek) { 111 Result res1 = allowedModifierPairs[m1.ordinal()][m2.ordinal()]; 112 Result res2 = allowedModifierPairs[m2.ordinal()][m1.ordinal()]; 113 if (res1 != res2) { 114 throw new AssertionError(String.format("Ill-formed table: [%s,%s] != [%s,%s]", m1, m2, m2, m1)); 115 } else { 116 return res1.compatible(ek, m1, m2); 117 } 118 } 119 120 interface Result { 121 boolean compatible(EnclosingKind ek, ModifierKind m1, ModifierKind m2); 122 } 123 124 static final Result T = new Result() { 125 @Override 126 public boolean compatible(EnclosingKind ek, ModifierKind m1, ModifierKind m2) { 127 return true; 128 } 129 }; 130 131 static final Result F = new Result() { 132 @Override 133 public boolean compatible(EnclosingKind ek, ModifierKind m1, ModifierKind m2) { 134 return false; 135 } 136 }; 137 138 static final Result C = new Result() { 139 @Override 140 public boolean compatible(EnclosingKind ek, ModifierKind m1, ModifierKind m2) { 141 return ek != EnclosingKind.INTERFACE; 142 } 143 }; 144 145 static final Result I = new Result() { 146 @Override 147 public boolean compatible(EnclosingKind ek, ModifierKind m1, ModifierKind m2) { 148 return ek == EnclosingKind.INTERFACE; 149 } 150 }; 151 152 static Result[][] allowedModifierPairs = { 153 /* NONE PUBLIC PROTECTED PRIVATE ABSTRACT STATIC NATIVE SYNCHRONIZED FINAL STRICTFP DEFAULT */ 154 /* NONE */ { T , T , C , T , T , T , C , C , C , C , I }, 155 /* PUBLIC */ { T , F , F , F , T , T , C , C , C , C , I }, 156 /* PROTECTED */ { C , F , F , F , C , C , C , C , C , C , F }, 157 /* PRIVATE */ { T , F , F , F , F , T , C , C , C , T , F }, 158 /* ABSTRACT */ { T , T , C , F , F , F , F , F , F , F , F }, 159 /* STATIC */ { T , T , C , T , F , F , C , C , C , T , F }, 160 /* NATIVE */ { C , C , C , C , F , C , F , C , C , F , F }, 161 /* SYNCHRONIZED */ { C , C , C , C , F , C , C , F , C , C , F }, 162 /* FINAL */ { C , C , C , C , F , C , C , C , F , C , F }, 163 /* STRICTFP */ { C , C , C , T , F , T , F , C , C , F , I }, 164 /* DEFAULT */ { I , I , F , F , F , F , F , F , F , I , F }}; 165 } 166 167 enum MethodKind { 168 NO_BODY("void m();"), 169 BODY("void m() { }"); 170 171 String methStr; 172 173 private MethodKind(String methStr) { 174 this.methStr = methStr; 175 } 176 } 177 178 enum EnclosingKind { 179 ABSTRACT_CLASS("abstract class Test "), 180 INTERFACE("interface Test "); 181 182 String enclStr; 183 184 EnclosingKind(String enclStr) { 185 this.enclStr = enclStr; 186 } 187 } 188 189 public static void main(String... args) throws Exception { 190 191 //create default shared JavaCompiler - reused across multiple compilations 192 JavaCompiler comp = ToolProvider.getSystemJavaCompiler(); 193 try (StandardJavaFileManager fm = comp.getStandardFileManager(null, null, null)) { 194 195 for (VersionKind vk : VersionKind.values()) { 196 for (EnclosingKind ek : EnclosingKind.values()) { 197 for (MethodKind mk : MethodKind.values()) { 198 for (ModifierKind modk1 : ModifierKind.values()) { 199 for (ModifierKind modk2 : ModifierKind.values()) { 200 new TestDefaultMethodsSyntax(vk, ek, mk, modk1, modk2).run(comp, fm); 201 } 202 } 203 } 204 } 205 } 206 System.out.println("Total check executed: " + checkCount); 207 } 208 } 209 210 VersionKind vk; 211 EnclosingKind ek; 212 MethodKind mk; 213 ModifierKind modk1, modk2; 214 JavaSource source; 215 DiagnosticChecker diagChecker; 216 217 TestDefaultMethodsSyntax(VersionKind vk, EnclosingKind ek, MethodKind mk, ModifierKind modk1, ModifierKind modk2) { 218 this.vk = vk; 219 this.ek = ek; 220 this.mk = mk; 221 this.modk1 = modk1; 222 this.modk2 = modk2; 223 this.source = new JavaSource(); 224 this.diagChecker = new DiagnosticChecker(); 225 } 226 227 class JavaSource extends SimpleJavaFileObject { 228 229 String template = "#EK {\n" + 230 " #MOD1 #MOD2 #METH\n" + 231 "}\n"; 232 233 String source; 234 235 public JavaSource() { 236 super(URI.create("myfo:/Test.java"), JavaFileObject.Kind.SOURCE); 237 source = template.replaceAll("#EK", ek.enclStr) 238 .replaceAll("#MOD1", modk1.modStr) 239 .replaceAll("#MOD2", modk2.modStr) 240 .replaceAll("#METH", mk.methStr); 241 } 242 243 @Override 244 public CharSequence getCharContent(boolean ignoreEncodingErrors) { 245 return source; 246 } 247 } 248 249 void run(JavaCompiler tool, StandardJavaFileManager fm) throws Exception { 250 JavacTask ct = (JavacTask)tool.getTask(null, fm, diagChecker, 251 vk.getOptions(), null, Arrays.asList(source)); 252 try { 253 ct.analyze(); 254 } catch (Throwable ex) { 255 throw new AssertionError("Error thrown when analyzing the following source:\n" + source.getCharContent(true)); 256 } 257 check(); 258 } 259 260 void check() { 261 boolean errorExpected = !ModifierKind.compatible(modk1, modk2, ek); 262 263 errorExpected |= !ModifierKind.compatible(mk, modk1, modk2, ek); 264 265 errorExpected |= !modk1.compatible(ek) || !modk2.compatible(ek); 266 267 errorExpected |= ModifierKind.intersect(ModifierKind.DEFAULT, modk1, modk2) && 268 vk == VersionKind.PRE_LAMBDA; 269 270 errorExpected |= ModifierKind.intersect(ModifierKind.STATIC, modk1, modk2) && 271 ek == EnclosingKind.INTERFACE && vk == VersionKind.PRE_LAMBDA; 272 273 errorExpected |= ModifierKind.intersect(ModifierKind.PRIVATE, modk1, modk2) && 274 ek == EnclosingKind.INTERFACE && (vk == VersionKind.LAMBDA || vk == VersionKind.PRE_LAMBDA); 275 276 checkCount++; 277 if (diagChecker.errorFound != errorExpected) { 278 throw new AssertionError("Problem when compiling source:\n" + source.getCharContent(true) + 279 "\nfound error: " + diagChecker.errorFound); 280 } 281 } 282 283 static class DiagnosticChecker implements javax.tools.DiagnosticListener<JavaFileObject> { 284 285 boolean errorFound; 286 287 public void report(Diagnostic<? extends JavaFileObject> diagnostic) { 288 if (diagnostic.getKind() == Diagnostic.Kind.ERROR) { 289 errorFound = true; 290 } 291 } 292 } 293} 294