jdk8-mips64-public/langtools: test/tools/javac/lambda/intersection/IntersectionTargetTypeTest.java@c7c41a044e7c (annotated)

test/tools/javac/lambda/intersection/IntersectionTargetTypeTest.java@c7c41a044e7c (annotated)

test/tools/javac/lambda/intersection/IntersectionTargetTypeTest.java

Mon, 21 Jan 2013 20:14:39 +0000

author: mcimadamore
date: Mon, 21 Jan 2013 20:14:39 +0000
changeset 1511: c7c41a044e7c
parent 1436: f6f1fd261f57
child 1678: c635a966ce84
permissions: -rw-r--r--

8006566: Remove transient lambda-related guards from JavacParser
Summary: Remove transitional internal flag for allowing intersection types in cast
Reviewed-by: jjg

 /*
  * Copyright (c) 2012, 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 8002099
  * @summary Add support for intersection types in cast expression
  */
 import com.sun.source.util.JavacTask;
 import com.sun.tools.javac.util.List;
 import com.sun.tools.javac.util.ListBuffer;
 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 IntersectionTargetTypeTest {
     static int checkCount = 0;
     enum BoundKind {
         INTF,
         CLASS,
         SAM,
         ZAM;
     }
     enum MethodKind {
         NONE,
         ABSTRACT,
         DEFAULT;
     }
     enum TypeKind {
         A("interface A { }\n", "A", BoundKind.ZAM),
         B("interface B { default void m() { } }\n", "B", BoundKind.ZAM),
         C("interface C { void m(); }\n", "C", BoundKind.SAM),
         D("interface D extends B { }\n", "D", BoundKind.ZAM),
         E("interface E extends C { }\n", "E", BoundKind.SAM),
         F("interface F extends C { void g(); }\n", "F", BoundKind.INTF),
         G("interface G extends B { void g(); }\n", "G", BoundKind.SAM),
         H("interface H extends A { void g(); }\n", "H", BoundKind.SAM),
         OBJECT("", "Object", BoundKind.CLASS),
         STRING("", "String", BoundKind.CLASS);
         String declStr;
         String typeStr;
         BoundKind boundKind;
         private TypeKind(String declStr, String typeStr, BoundKind boundKind) {
             this.declStr = declStr;
             this.typeStr = typeStr;
             this.boundKind = boundKind;
         }
         boolean compatibleSupertype(TypeKind tk) {
             if (tk == this) return true;
             switch (tk) {
                 case B:
                     return this != C && this != E && this != F;
                 case C:
                     return this != B && this != C && this != D && this != G;
                 case D: return compatibleSupertype(B);
                 case E:
                 case F: return compatibleSupertype(C);
                 case G: return compatibleSupertype(B);
                 case H: return compatibleSupertype(A);
                 default:
                     return true;
             }
         }
     }
     enum CastKind {
         ONE_ARY("(#B0)", 1),
         TWO_ARY("(#B0 & #B1)", 2),
         THREE_ARY("(#B0 & #B1 & #B2)", 3);
         String castTemplate;
         int nbounds;
         CastKind(String castTemplate, int nbounds) {
             this.castTemplate = castTemplate;
             this.nbounds = nbounds;
         }
     }
     enum ExpressionKind {
         LAMBDA("()->{}", true),
         MREF("this::m", true),
         //COND_LAMBDA("(true ? ()->{} : ()->{})", true), re-enable if spec allows this
         //COND_MREF("(true ? this::m : this::m)", true),
         STANDALONE("null", false);
         String exprString;
         boolean isFunctional;
         private ExpressionKind(String exprString, boolean isFunctional) {
             this.exprString = exprString;
             this.isFunctional = isFunctional;
         }
     }
     static class CastInfo {
         CastKind kind;
         TypeKind[] types;
         CastInfo(CastKind kind, TypeKind... types) {
             this.kind = kind;
             this.types = types;
         }
         String getCast() {
             String temp = kind.castTemplate;
             for (int i = 0; i < kind.nbounds ; i++) {
                 temp = temp.replace(String.format("#B%d", i), types[i].typeStr);
             }
             return temp;
         }
         boolean wellFormed() {
             //check for duplicate types
             for (int i = 0 ; i < types.length ; i++) {
                 for (int j = 0 ; j < types.length ; j++) {
                     if (i != j && types[i] == types[j]) {
                         return false;
                     }
                 }
             }
             //check that classes only appear as first bound
             boolean classOk = true;
             for (int i = 0 ; i < types.length ; i++) {
                 if (types[i].boundKind == BoundKind.CLASS &&
                         !classOk) {
                     return false;
                 }
                 classOk = false;
             }
             //check that supertypes are mutually compatible
             for (int i = 0 ; i < types.length ; i++) {
                 for (int j = 0 ; j < types.length ; j++) {
                     if (!types[i].compatibleSupertype(types[j]) && i != j) {
                         return false;
                     }
                 }
             }
             return true;
         }
     }
     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 (CastInfo cInfo : allCastInfo()) {
             for (ExpressionKind ek : ExpressionKind.values()) {
                 new IntersectionTargetTypeTest(cInfo, ek).run(comp, fm);
             }
         }
         System.out.println("Total check executed: " + checkCount);
     }
     static List<CastInfo> allCastInfo() {
         ListBuffer<CastInfo> buf = ListBuffer.lb();
         for (CastKind kind : CastKind.values()) {
             for (TypeKind b1 : TypeKind.values()) {
                 if (kind.nbounds == 1) {
                     buf.append(new CastInfo(kind, b1));
                     continue;
                 } else {
                     for (TypeKind b2 : TypeKind.values()) {
                         if (kind.nbounds == 2) {
                             buf.append(new CastInfo(kind, b1, b2));
                             continue;
                         } else {
                             for (TypeKind b3 : TypeKind.values()) {
                                 buf.append(new CastInfo(kind, b1, b2, b3));
                             }
                         }
                     }
                 }
             }
         }
         return buf.toList();
     }
     CastInfo cInfo;
     ExpressionKind ek;
     JavaSource source;
     DiagnosticChecker diagChecker;
     IntersectionTargetTypeTest(CastInfo cInfo, ExpressionKind ek) {
         this.cInfo = cInfo;
         this.ek = ek;
         this.source = new JavaSource();
         this.diagChecker = new DiagnosticChecker();
     }
     class JavaSource extends SimpleJavaFileObject {
         String bodyTemplate = "class Test {\n" +
                               "   void m() { }\n" +
                               "   void test() {\n" +
                               "      Object o = #C#E;\n" +
                               "   } }";
         String source = "";
         public JavaSource() {
             super(URI.create("myfo:/Test.java"), JavaFileObject.Kind.SOURCE);
             for (TypeKind tk : TypeKind.values()) {
                 source += tk.declStr;
             }
             source += bodyTemplate.replaceAll("#C", cInfo.getCast()).replaceAll("#E", ek.exprString);
         }
         @Override
         public CharSequence getCharContent(boolean ignoreEncodingErrors) {
             return source;
         }
     }
     void run(JavaCompiler tool, StandardJavaFileManager fm) throws Exception {
         JavacTask ct = (JavacTask)tool.getTask(null, fm, diagChecker,
                 null, null, Arrays.asList(source));
         try {
             ct.analyze();
         } catch (Throwable ex) {
             throw new AssertionError("Error thrown when compiling the following code:\n" + source.getCharContent(true));
         }
         check();
     }
     void check() {
         checkCount++;
         boolean errorExpected = !cInfo.wellFormed();
         if (ek.isFunctional) {
             //first bound must be a SAM
             errorExpected |= cInfo.types[0].boundKind != BoundKind.SAM;
             if (cInfo.types.length > 1) {
                 //additional bounds must be ZAMs
                 for (int i = 1; i < cInfo.types.length; i++) {
                     errorExpected |= cInfo.types[i].boundKind != BoundKind.ZAM;
                 }
             }
         }
         if (errorExpected != diagChecker.errorFound) {
             throw new Error("invalid diagnostics for source:\n" +
                 source.getCharContent(true) +
                 "\nFound error: " + diagChecker.errorFound +
                 "\nExpected error: " + errorExpected);
         }
     }
     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;
             }
         }
     }
 }

Mercurial > jdk8-mips64-public > langtools / annotate

test/tools/javac/lambda/intersection/IntersectionTargetTypeTest.java@c7c41a044e7c (annotated)

test/tools/javac/lambda/intersection/IntersectionTargetTypeTest.java