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Java example source code file (StructuralMostSpecificTest.java)
The StructuralMostSpecificTest.java Java example source code/* * Copyright (c) 2012, 2013, 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 8003280 8006694 * @summary Add lambda tests * Automatic test for checking correctness of structural most specific test routine * temporarily workaround combo tests are causing time out in several platforms * @library ../../lib * @build JavacTestingAbstractThreadedTest * @run main/othervm/timeout=600 StructuralMostSpecificTest */ // use /othervm to avoid jtreg timeout issues (CODETOOLS-7900047) // see JDK-8006746 import java.net.URI; import java.util.Arrays; import javax.tools.Diagnostic; import javax.tools.JavaFileObject; import javax.tools.SimpleJavaFileObject; import com.sun.source.util.JavacTask; import com.sun.tools.javac.api.ClientCodeWrapper; import com.sun.tools.javac.util.JCDiagnostic; public class StructuralMostSpecificTest extends JavacTestingAbstractThreadedTest implements Runnable { enum RetTypeKind { SHORT("short"), INT("int"), OBJECT("Object"), INTEGER("Integer"), VOID("void"), J_L_VOID("Void"); String retTypeStr; RetTypeKind(String retTypeStr) { this.retTypeStr = retTypeStr; } boolean moreSpecificThan(RetTypeKind rk) { return moreSpecificThan[this.ordinal()][rk.ordinal()]; } static boolean[][] moreSpecificThan = { // SHORT | INT | OBJECT | INTEGER | VOID | J_L_VOID /* SHORT */ { true , true , true , false , false , false }, /* INT */ { false , true , true , true , false , false }, /* OBJECT */ { false , false , true , false , false , false }, /* INTEGER */ { false , false , true , true , false , false }, /* VOID */ { false , false , false , false , true , true }, /* J_L_VOID */{ false , false , true , false , false , true } }; } enum ArgTypeKind { SHORT("short"), INT("int"), BOOLEAN("boolean"), OBJECT("Object"), INTEGER("Integer"), DOUBLE("Double"); String argTypeStr; ArgTypeKind(String typeStr) { this.argTypeStr = typeStr; } } enum ExceptionKind { NONE(""), EXCEPTION("throws Exception"), SQL_EXCEPTION("throws java.sql.SQLException"), IO_EXCEPTION("throws java.io.IOException"); String exceptionStr; ExceptionKind(String exceptionStr) { this.exceptionStr = exceptionStr; } } enum LambdaReturnKind { VOID("return;"), SHORT("return (short)0;"), INT("return 0;"), INTEGER("return (Integer)null;"), NULL("return null;"); String retStr; LambdaReturnKind(String retStr) { this.retStr = retStr; } boolean compatibleWith(RetTypeKind rk) { return compatibleWith[rk.ordinal()][ordinal()]; } static boolean[][] compatibleWith = { // VOID | SHORT | INT | INTEGER | NULL /* SHORT */ { false , true , false , false , false }, /* INT */ { false , true , true , true , false }, /* OBJECT */ { false , true , true , true , true }, /* INTEGER */ { false , false , true , true , true }, /* VOID */ { true , false , false , false , false }, /* J_L_VOID */{ false , false , false , false , true } }; boolean needsConversion(RetTypeKind rk) { return needsConversion[rk.ordinal()][ordinal()]; } static boolean[][] needsConversion = { // VOID | SHORT | INT | INTEGER | NULL /* SHORT */ { false , false , false , false , false }, /* INT */ { false , false , false , true , false }, /* OBJECT */ { false , true , true , false , false }, /* INTEGER */ { false , false , true , false , false }, /* VOID */ { false , false , false , false , false }, /* J_L_VOID */{ true , false , false , false , false } }; } public static void main(String... args) throws Exception { for (LambdaReturnKind lrk : LambdaReturnKind.values()) { for (RetTypeKind rk1 : RetTypeKind.values()) { for (RetTypeKind rk2 : RetTypeKind.values()) { for (ExceptionKind ek1 : ExceptionKind.values()) { for (ExceptionKind ek2 : ExceptionKind.values()) { for (ArgTypeKind ak11 : ArgTypeKind.values()) { for (ArgTypeKind ak12 : ArgTypeKind.values()) { pool.execute( new StructuralMostSpecificTest(lrk, rk1, rk2, ek1, ek2, ak11, ak12)); } } } } } } } checkAfterExec(); } LambdaReturnKind lrk; RetTypeKind rt1, rt2; ArgTypeKind ak1, ak2; ExceptionKind ek1, ek2; JavaSource source; DiagnosticChecker diagChecker; StructuralMostSpecificTest(LambdaReturnKind lrk, RetTypeKind rt1, RetTypeKind rt2, ExceptionKind ek1, ExceptionKind ek2, ArgTypeKind ak1, ArgTypeKind ak2) { this.lrk = lrk; this.rt1 = rt1; this.rt2 = rt2; this.ek1 = ek1; this.ek2 = ek2; this.ak1 = ak1; this.ak2 = ak2; this.source = new JavaSource(); this.diagChecker = new DiagnosticChecker(); } class JavaSource extends SimpleJavaFileObject { String template = "interface SAM1 {\n" + " #R1 m(#A1 a1) #E1;\n" + "}\n" + "interface SAM2 {\n" + " #R2 m(#A2 a1) #E2;\n" + "}\n" + "class Test {\n" + " void m(SAM1 s) { }\n" + " void m(SAM2 s) { }\n" + " { m((#A1 x)->{ #LR }); }\n" + "}\n"; String source; public JavaSource() { super(URI.create("myfo:/Test.java"), JavaFileObject.Kind.SOURCE); source = template.replaceAll("#LR", lrk.retStr) .replaceAll("#R1", rt1.retTypeStr) .replaceAll("#R2", rt2.retTypeStr) .replaceAll("#A1", ak1.argTypeStr) .replaceAll("#A2", ak2.argTypeStr) .replaceAll("#E1", ek1.exceptionStr) .replaceAll("#E2", ek2.exceptionStr); } @Override public CharSequence getCharContent(boolean ignoreEncodingErrors) { return source; } } public void run() { JavacTask ct = (JavacTask)comp.getTask(null, fm.get(), diagChecker, Arrays.asList("-XDverboseResolution=all,-predef,-internal,-object-init"), null, Arrays.asList(source)); try { ct.analyze(); } catch (Throwable ex) { throw new AssertionError("Error thron when analyzing the following source:\n" + source.getCharContent(true)); } check(); } void check() { checkCount.incrementAndGet(); if (ak1 != ak2) return; if (!lrk.compatibleWith(rt1) || !lrk.compatibleWith(rt2)) return; if (lrk.needsConversion(rt1) != lrk.needsConversion(rt2)) return; boolean m1MoreSpecific = rt1.moreSpecificThan(rt2); boolean m2MoreSpecific = rt2.moreSpecificThan(rt1); boolean ambiguous = (m1MoreSpecific == m2MoreSpecific); if (ambiguous != diagChecker.ambiguityFound) { throw new Error("invalid diagnostics for source:\n" + source.getCharContent(true) + "\nAmbiguity found: " + diagChecker.ambiguityFound + "\nm1 more specific: " + m1MoreSpecific + "\nm2 more specific: " + m2MoreSpecific + "\nexpected ambiguity: " + ambiguous); } if (!ambiguous) { String sigToCheck = m1MoreSpecific ? "m(SAM1)" : "m(SAM2)"; if (!sigToCheck.equals(diagChecker.mostSpecificSig)) { throw new Error("invalid most specific method selected:\n" + source.getCharContent(true) + "\nMost specific found: " + diagChecker.mostSpecificSig + "\nm1 more specific: " + m1MoreSpecific + "\nm2 more specific: " + m2MoreSpecific); } } } static class DiagnosticChecker implements javax.tools.DiagnosticListener<JavaFileObject> { boolean ambiguityFound; String mostSpecificSig; public void report(Diagnostic<? extends JavaFileObject> diagnostic) { try { if (diagnostic.getKind() == Diagnostic.Kind.ERROR && diagnostic.getCode().equals("compiler.err.ref.ambiguous")) { ambiguityFound = true; } else if (diagnostic.getKind() == Diagnostic.Kind.NOTE && diagnostic.getCode() .equals("compiler.note.verbose.resolve.multi")) { ClientCodeWrapper.DiagnosticSourceUnwrapper dsu = (ClientCodeWrapper.DiagnosticSourceUnwrapper)diagnostic; JCDiagnostic.MultilineDiagnostic mdiag = (JCDiagnostic.MultilineDiagnostic)dsu.d; int mostSpecificIndex = (Integer)mdiag.getArgs()[2]; mostSpecificSig = ((JCDiagnostic)mdiag.getSubdiagnostics() .get(mostSpecificIndex)).getArgs()[1].toString(); } } catch (RuntimeException t) { t.printStackTrace(); throw t; } } } } Other Java examples (source code examples)Here is a short list of links related to this Java StructuralMostSpecificTest.java source code file: |
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