jdk8-mips64-public/langtools: test/tools/javac/lambda/FunctionalInterfaceConversionTest.java@34d1ebaf4645 (annotated)

test/tools/javac/lambda/FunctionalInterfaceConversionTest.java@34d1ebaf4645 (annotated)

test/tools/javac/lambda/FunctionalInterfaceConversionTest.java

Fri, 30 Nov 2012 15:14:25 +0000

author: mcimadamore
date: Fri, 30 Nov 2012 15:14:25 +0000
changeset 1434: 34d1ebaf4645
child 1482: 954541f13717
permissions: -rw-r--r--

8004102: Add support for generic functional descriptors
Summary: Method references are allowed to have a generic functional interface descriptor target
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 8003280 8004102
  * @summary Add lambda tests
  *  perform several automated checks in lambda conversion, esp. around accessibility
  * @author  Maurizio Cimadamore
  * @run main FunctionalInterfaceConversionTest
  */
 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 FunctionalInterfaceConversionTest {
     enum PackageKind {
         NO_PKG(""),
         PKG_A("a");
         String pkg;
         PackageKind(String pkg) {
             this.pkg = pkg;
         }
         String getPkgDecl() {
             return this == NO_PKG ?
                 "" :
                 "package " + pkg + ";";
         }
         String getImportStat() {
             return this == NO_PKG ?
                 "" :
                 "import " + pkg + ".*;";
         }
     }
     enum SamKind {
         CLASS("public class Sam {  }"),
         ABSTACT_CLASS("public abstract class Sam {  }"),
         ANNOTATION("public @interface Sam {  }"),
         ENUM("public enum Sam { }"),
         INTERFACE("public interface Sam { \n #METH; \n }");
         String sam_str;
         SamKind(String sam_str) {
             this.sam_str = sam_str;
         }
         String getSam(String methStr) {
             return sam_str.replaceAll("#METH", methStr);
         }
     }
     enum ModifierKind {
         PUBLIC("public"),
         PACKAGE("");
         String modifier_str;
         ModifierKind(String modifier_str) {
             this.modifier_str = modifier_str;
         }
         boolean stricterThan(ModifierKind that) {
             return this.ordinal() > that.ordinal();
         }
     }
     enum TypeKind {
         EXCEPTION("Exception"),
         PKG_CLASS("PackageClass");
         String typeStr;
         private TypeKind(String typeStr) {
             this.typeStr = typeStr;
         }
     }
     enum ExprKind {
         LAMBDA("x -> null"),
         MREF("this::m");
         String exprStr;
         private ExprKind(String exprStr) {
             this.exprStr = exprStr;
         }
     }
     enum MethodKind {
         NONE(""),
         NON_GENERIC("public abstract #R m(#ARG s) throws #T;"),
         GENERIC("public abstract <X> #R m(#ARG s) throws #T;");
         String methodTemplate;
         private MethodKind(String methodTemplate) {
             this.methodTemplate = methodTemplate;
         }
         String getMethod(TypeKind retType, TypeKind argType, TypeKind thrownType) {
             return methodTemplate.replaceAll("#R", retType.typeStr).
                     replaceAll("#ARG", argType.typeStr).
                     replaceAll("#T", thrownType.typeStr);
         }
     }
     public static void main(String[] args) throws Exception {
         final JavaCompiler comp = ToolProvider.getSystemJavaCompiler();
         StandardJavaFileManager fm = comp.getStandardFileManager(null, null, null);
         for (PackageKind samPkg : PackageKind.values()) {
             for (ModifierKind modKind : ModifierKind.values()) {
                 for (SamKind samKind : SamKind.values()) {
                     for (MethodKind samMeth : MethodKind.values()) {
                         for (MethodKind clientMeth : MethodKind.values()) {
                             for (TypeKind retType : TypeKind.values()) {
                                 for (TypeKind argType : TypeKind.values()) {
                                     for (TypeKind thrownType : TypeKind.values()) {
                                         for (ExprKind exprKind : ExprKind.values()) {
                                             new FunctionalInterfaceConversionTest(samPkg, modKind, samKind,
                                                     samMeth, clientMeth, retType, argType, thrownType, exprKind).test(comp, fm);
                                         }
                                     }
                                 }
                             }
                         }
                     }
                 }
             }
         }
     }
     PackageKind samPkg;
     ModifierKind modKind;
     SamKind samKind;
     MethodKind samMeth;
     MethodKind clientMeth;
     TypeKind retType;
     TypeKind argType;
     TypeKind thrownType;
     ExprKind exprKind;
     DiagnosticChecker dc;
     SourceFile samSourceFile = new SourceFile("Sam.java", "#P \n #C") {
         public String toString() {
             return template.replaceAll("#P", samPkg.getPkgDecl()).
                     replaceAll("#C", samKind.getSam(samMeth.getMethod(retType, argType, thrownType)));
         }
     };
     SourceFile pkgClassSourceFile = new SourceFile("PackageClass.java",
                                                    "#P\n #M class PackageClass extends Exception { }") {
         public String toString() {
             return template.replaceAll("#P", samPkg.getPkgDecl()).
                     replaceAll("#M", modKind.modifier_str);
         }
     };
     SourceFile clientSourceFile = new SourceFile("Client.java",
                                                  "#I\n abstract class Client { \n" +
                                                  "  Sam s = #E;\n" +
                                                  "  #M \n }") {
         public String toString() {
             return template.replaceAll("#I", samPkg.getImportStat())
                     .replaceAll("#E", exprKind.exprStr)
                     .replaceAll("#M", clientMeth.getMethod(retType, argType, thrownType));
         }
     };
     FunctionalInterfaceConversionTest(PackageKind samPkg, ModifierKind modKind, SamKind samKind,
             MethodKind samMeth, MethodKind clientMeth, TypeKind retType, TypeKind argType,
             TypeKind thrownType, ExprKind exprKind) {
         this.samPkg = samPkg;
         this.modKind = modKind;
         this.samKind = samKind;
         this.samMeth = samMeth;
         this.clientMeth = clientMeth;
         this.retType = retType;
         this.argType = argType;
         this.thrownType = thrownType;
         this.exprKind = exprKind;
         this.dc = new DiagnosticChecker();
     }
     void test(JavaCompiler comp, StandardJavaFileManager fm) throws Exception {
         JavacTask ct = (JavacTask)comp.getTask(null, fm, dc,
                 null, null, Arrays.asList(samSourceFile, pkgClassSourceFile, clientSourceFile));
         ct.analyze();
         if (dc.errorFound == checkSamConversion()) {
             throw new AssertionError(samSourceFile + "\n\n" + pkgClassSourceFile + "\n\n" + clientSourceFile);
         }
     }
     boolean checkSamConversion() {
         if (samKind != SamKind.INTERFACE) {
             //sam type must be an interface
             return false;
         } else if (samMeth == MethodKind.NONE) {
             //interface must have at least a method
             return false;
         } else if (exprKind == ExprKind.LAMBDA &&
                 samMeth != MethodKind.NON_GENERIC) {
             //target method for lambda must be non-generic
             return false;
         } else if (exprKind == ExprKind.MREF &&
                 clientMeth == MethodKind.NONE) {
             return false;
         } else if (samPkg != PackageKind.NO_PKG &&
                 modKind != ModifierKind.PUBLIC &&
                 (retType == TypeKind.PKG_CLASS ||
                 argType == TypeKind.PKG_CLASS ||
                 thrownType == TypeKind.PKG_CLASS)) {
             //target must not contain inaccessible types
             return false;
         } else {
             return true;
         }
     }
     abstract class SourceFile extends SimpleJavaFileObject {
         protected String template;
         public SourceFile(String filename, String template) {
             super(URI.create("myfo:/" + filename), JavaFileObject.Kind.SOURCE);
             this.template = template;
         }
         @Override
         public CharSequence getCharContent(boolean ignoreEncodingErrors) {
             return toString();
         }
         public abstract String toString();
     }
     static class DiagnosticChecker implements javax.tools.DiagnosticListener<JavaFileObject> {
         boolean errorFound = false;
         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/FunctionalInterfaceConversionTest.java@34d1ebaf4645 (annotated)

test/tools/javac/lambda/FunctionalInterfaceConversionTest.java