| /* |
| * Copyright (c) 2012, 2014, 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 8005166 |
| * @summary Add support for static interface methods |
| * Smoke test for static interface method hiding |
| * @run main/timeout=600 InterfaceMethodHidingTest |
| */ |
| |
| 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 InterfaceMethodHidingTest { |
| |
| static int checkCount = 0; |
| |
| enum SignatureKind { |
| VOID_INTEGER("void m(Integer s)", "return;"), |
| STRING_INTEGER("String m(Integer s)", "return null;"), |
| VOID_STRING("void m(String s)", "return;"), |
| STRING_STRING("String m(String s)", "return null;"); |
| |
| String sigStr; |
| String retStr; |
| |
| SignatureKind(String sigStr, String retStr) { |
| this.sigStr = sigStr; |
| this.retStr = retStr; |
| } |
| |
| boolean overrideEquivalentWith(SignatureKind s2) { |
| switch (this) { |
| case VOID_INTEGER: |
| case STRING_INTEGER: |
| return s2 == VOID_INTEGER || s2 == STRING_INTEGER; |
| case VOID_STRING: |
| case STRING_STRING: |
| return s2 == VOID_STRING || s2 == STRING_STRING; |
| default: |
| throw new AssertionError("bad signature kind"); |
| } |
| } |
| } |
| |
| enum MethodKind { |
| VIRTUAL("", "#M #S;"), |
| STATIC("static", "#M #S { #BE; #R }"), |
| DEFAULT("default", "#M #S { #BE; #R }"); |
| |
| String modStr; |
| String methTemplate; |
| |
| MethodKind(String modStr, String methTemplate) { |
| this.modStr = modStr; |
| this.methTemplate = methTemplate; |
| } |
| |
| boolean inherithed() { |
| return this != STATIC; |
| } |
| |
| static boolean overrides(MethodKind mk1, SignatureKind sk1, MethodKind mk2, SignatureKind sk2) { |
| return sk1 == sk2 && |
| mk2.inherithed() && |
| mk1 != STATIC; |
| } |
| |
| String getBody(BodyExpr be, SignatureKind sk) { |
| return methTemplate.replaceAll("#BE", be.bodyExprStr) |
| .replaceAll("#R", sk.retStr) |
| .replaceAll("#M", modStr) |
| .replaceAll("#S", sk.sigStr); |
| } |
| } |
| |
| enum BodyExpr { |
| NONE(""), |
| THIS("Object o = this"); |
| |
| String bodyExprStr; |
| |
| BodyExpr(String bodyExprStr) { |
| this.bodyExprStr = bodyExprStr; |
| } |
| |
| boolean allowed(MethodKind mk) { |
| return this == NONE || |
| mk != MethodKind.STATIC; |
| } |
| } |
| |
| public static void main(String... args) throws Exception { |
| |
| //create default shared JavaCompiler - reused across multiple compilations |
| JavaCompiler comp = ToolProvider.getSystemJavaCompiler(); |
| StandardJavaFileManager fm = comp.getStandardFileManager(null, null, null); |
| |
| for (MethodKind mk1 : MethodKind.values()) { |
| for (SignatureKind sk1 : SignatureKind.values()) { |
| for (BodyExpr be1 : BodyExpr.values()) { |
| for (MethodKind mk2 : MethodKind.values()) { |
| for (SignatureKind sk2 : SignatureKind.values()) { |
| for (BodyExpr be2 : BodyExpr.values()) { |
| for (MethodKind mk3 : MethodKind.values()) { |
| for (SignatureKind sk3 : SignatureKind.values()) { |
| for (BodyExpr be3 : BodyExpr.values()) { |
| new InterfaceMethodHidingTest(mk1, mk2, mk3, sk1, sk2, sk3, be1, be2, be3).run(comp, fm); |
| } |
| } |
| } |
| } |
| } |
| } |
| } |
| } |
| } |
| System.out.println("Total check executed: " + checkCount); |
| } |
| |
| MethodKind mk1, mk2, mk3; |
| SignatureKind sk1, sk2, sk3; |
| BodyExpr be1, be2, be3; |
| JavaSource source; |
| DiagnosticChecker diagChecker; |
| |
| InterfaceMethodHidingTest(MethodKind mk1, MethodKind mk2, MethodKind mk3, |
| SignatureKind sk1, SignatureKind sk2, SignatureKind sk3, BodyExpr be1, BodyExpr be2, BodyExpr be3) { |
| this.mk1 = mk1; |
| this.mk2 = mk2; |
| this.mk3 = mk3; |
| this.sk1 = sk1; |
| this.sk2 = sk2; |
| this.sk3 = sk3; |
| this.be1 = be1; |
| this.be2 = be2; |
| this.be3 = be3; |
| this.source = new JavaSource(); |
| this.diagChecker = new DiagnosticChecker(); |
| } |
| |
| class JavaSource extends SimpleJavaFileObject { |
| |
| String template = "interface Sup {\n" + |
| " default void sup() { }\n" + |
| "}\n" + |
| "interface A extends Sup {\n" + |
| " #M1\n" + |
| "}\n" + |
| "interface B extends A, Sup {\n" + |
| " #M2\n" + |
| "}\n" + |
| "interface C extends B, Sup {\n" + |
| " #M3\n" + |
| "}\n"; |
| |
| String source; |
| |
| public JavaSource() { |
| super(URI.create("myfo:/Test.java"), JavaFileObject.Kind.SOURCE); |
| source = template.replaceAll("#M1", mk1.getBody(be1, sk1)) |
| .replaceAll("#M2", mk2.getBody(be2, sk2)) |
| .replaceAll("#M3", mk3.getBody(be3, sk3)); |
| } |
| |
| @Override |
| public CharSequence getCharContent(boolean ignoreEncodingErrors) { |
| return source; |
| } |
| } |
| |
| void run(JavaCompiler tool, StandardJavaFileManager fm) throws Exception { |
| JavacTask ct = (JavacTask)tool.getTask(null, fm, diagChecker, |
| Arrays.asList("-XDallowStaticInterfaceMethods"), null, Arrays.asList(source)); |
| try { |
| ct.analyze(); |
| } catch (Throwable ex) { |
| throw new AssertionError("Error thrown when analyzing the following source:\n" + source.getCharContent(true)); |
| } |
| check(); |
| } |
| |
| void check() { |
| boolean errorExpected = |
| !be1.allowed(mk1) || !be2.allowed(mk2) || !be3.allowed(mk3); |
| |
| if (mk1.inherithed()) { |
| errorExpected |= |
| sk2.overrideEquivalentWith(sk1) && !MethodKind.overrides(mk2, sk2, mk1, sk1) || |
| sk3.overrideEquivalentWith(sk1) && !MethodKind.overrides(mk3, sk3, mk1, sk1); |
| } |
| |
| if (mk2.inherithed()) { |
| errorExpected |= |
| sk3.overrideEquivalentWith(sk2) && !MethodKind.overrides(mk3, sk3, mk2, sk2); |
| } |
| |
| checkCount++; |
| if (diagChecker.errorFound != errorExpected) { |
| throw new AssertionError("Problem when compiling source:\n" + source.getCharContent(true) + |
| "\nfound error: " + diagChecker.errorFound); |
| } |
| } |
| |
| 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; |
| } |
| } |
| } |
| } |