jdk8-mips64-public/langtools: test/tools/javac/lambda/mostSpecific/StructuralMostSpecificTest.java@c09b7234cded (annotated)

test/tools/javac/lambda/mostSpecific/StructuralMostSpecificTest.java@c09b7234cded (annotated)

test/tools/javac/lambda/mostSpecific/StructuralMostSpecificTest.java

Tue, 14 May 2013 11:11:09 -0700

author: rfield
date: Tue, 14 May 2013 11:11:09 -0700
changeset 1752: c09b7234cded
parent 1520: 5c956be64b9e
child 2000: 4a6acc42c3a1
permissions: -rw-r--r--

8012556: Implement lambda methods on interfaces as static
8006140: Javac NPE compiling Lambda expression on initialization expression of static field in interface
Summary: Lambdas occurring in static contexts or those not needing instance information should be generated into static methods. This has long been the case for classes. However, as a work-around to the lack of support for statics on interfaces, interface lambda methods have been generated into default methods. For lambdas in interface static contexts (fields and static methods) this causes an NPE in javac because there is no 'this'. MethodHandles now support static methods on interfaces. This changeset allows lambda methods to be generated as static interface methods. An existing bug in Hotspot (8013875) is exposed in a test when the "-esa" flag is used. This test and another test that already exposed this bug have been marked with @ignore.
Reviewed-by: mcimadamore

 /*
  * 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(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 (!lrk.compatibleWith(rt1) || !lrk.compatibleWith(rt2))
             return;
         if (lrk.needsConversion(rt1) != lrk.needsConversion(rt2))
             return;
         boolean m1MoreSpecific = moreSpecific(rt1, rt2, ek1, ek2, ak1, ak2);
         boolean m2MoreSpecific = moreSpecific(rt2, rt1, ek2, ek1, ak2, ak1);
         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);
             }
         }
     }
     boolean moreSpecific(RetTypeKind rk1, RetTypeKind rk2, ExceptionKind ek1,
             ExceptionKind ek2, ArgTypeKind ak1, ArgTypeKind ak2) {
         if (!rk1.moreSpecificThan(rk2))
             return false;
         if (ak1 != ak2)
             return false;
         return true;
     }
     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;
             }
         }
     }
 }

Mercurial > jdk8-mips64-public > langtools / annotate

test/tools/javac/lambda/mostSpecific/StructuralMostSpecificTest.java@c09b7234cded (annotated)

test/tools/javac/lambda/mostSpecific/StructuralMostSpecificTest.java