aoqi@0: /*
aoqi@0:  * Copyright (c) 2012, 2014, Oracle and/or its affiliates. All rights reserved.
aoqi@0:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0:  *
aoqi@0:  * This code is free software; you can redistribute it and/or modify it
aoqi@0:  * under the terms of the GNU General Public License version 2 only, as
aoqi@0:  * published by the Free Software Foundation.
aoqi@0:  *
aoqi@0:  * This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
aoqi@0:  * version 2 for more details (a copy is included in the LICENSE file that
aoqi@0:  * accompanied this code).
aoqi@0:  *
aoqi@0:  * You should have received a copy of the GNU General Public License version
aoqi@0:  * 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0:  *
aoqi@0:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0:  * or visit www.oracle.com if you need additional information or have any
aoqi@0:  * questions.
aoqi@0:  */
aoqi@0: 
aoqi@0: /**
aoqi@0:  * @test
aoqi@0:  * @bug 8003280 8004102 8006694
aoqi@0:  * @summary Add lambda tests
aoqi@0:  *  perform several automated checks in lambda conversion, esp. around accessibility
aoqi@0:  *  temporarily workaround combo tests are causing time out in several platforms
aoqi@0:  * @author  Maurizio Cimadamore
aoqi@0:  * @library ../lib
aoqi@0:  * @build JavacTestingAbstractThreadedTest
aoqi@0:  * @run main/timeout=600/othervm FunctionalInterfaceConversionTest
aoqi@0:  */
aoqi@0: 
aoqi@0: // use /othervm to avoid jtreg timeout issues (CODETOOLS-7900047)
aoqi@0: // see JDK-8006746
aoqi@0: 
aoqi@0: import java.io.IOException;
aoqi@0: import java.net.URI;
aoqi@0: import java.util.Arrays;
aoqi@0: import javax.tools.Diagnostic;
aoqi@0: import javax.tools.JavaCompiler;
aoqi@0: import javax.tools.JavaFileObject;
aoqi@0: import javax.tools.SimpleJavaFileObject;
aoqi@0: import javax.tools.ToolProvider;
aoqi@0: import com.sun.source.util.JavacTask;
aoqi@0: 
aoqi@0: public class FunctionalInterfaceConversionTest
aoqi@0:     extends JavacTestingAbstractThreadedTest
aoqi@0:     implements Runnable {
aoqi@0: 
aoqi@0:     enum PackageKind {
aoqi@0:         NO_PKG(""),
aoqi@0:         PKG_A("a");
aoqi@0: 
aoqi@0:         String pkg;
aoqi@0: 
aoqi@0:         PackageKind(String pkg) {
aoqi@0:             this.pkg = pkg;
aoqi@0:         }
aoqi@0: 
aoqi@0:         String getPkgDecl() {
aoqi@0:             return this == NO_PKG ?
aoqi@0:                 "" :
aoqi@0:                 "package " + pkg + ";";
aoqi@0:         }
aoqi@0: 
aoqi@0:         String getImportStat() {
aoqi@0:             return this == NO_PKG ?
aoqi@0:                 "" :
aoqi@0:                 "import " + pkg + ".*;";
aoqi@0:         }
aoqi@0:     }
aoqi@0: 
aoqi@0:     enum SamKind {
aoqi@0:         CLASS("public class Sam {  }"),
aoqi@0:         ABSTACT_CLASS("public abstract class Sam {  }"),
aoqi@0:         ANNOTATION("public @interface Sam {  }"),
aoqi@0:         ENUM("public enum Sam { }"),
aoqi@0:         INTERFACE("public interface Sam { \n #METH; \n }");
aoqi@0: 
aoqi@0:         String sam_str;
aoqi@0: 
aoqi@0:         SamKind(String sam_str) {
aoqi@0:             this.sam_str = sam_str;
aoqi@0:         }
aoqi@0: 
aoqi@0:         String getSam(String methStr) {
aoqi@0:             return sam_str.replaceAll("#METH", methStr);
aoqi@0:         }
aoqi@0:     }
aoqi@0: 
aoqi@0:     enum ModifierKind {
aoqi@0:         PUBLIC("public"),
aoqi@0:         PACKAGE("");
aoqi@0: 
aoqi@0:         String modifier_str;
aoqi@0: 
aoqi@0:         ModifierKind(String modifier_str) {
aoqi@0:             this.modifier_str = modifier_str;
aoqi@0:         }
aoqi@0: 
aoqi@0:         boolean stricterThan(ModifierKind that) {
aoqi@0:             return this.ordinal() > that.ordinal();
aoqi@0:         }
aoqi@0:     }
aoqi@0: 
aoqi@0:     enum TypeKind {
aoqi@0:         EXCEPTION("Exception"),
aoqi@0:         PKG_CLASS("PackageClass");
aoqi@0: 
aoqi@0:         String typeStr;
aoqi@0: 
aoqi@0:         private TypeKind(String typeStr) {
aoqi@0:             this.typeStr = typeStr;
aoqi@0:         }
aoqi@0:     }
aoqi@0: 
aoqi@0:     enum ExprKind {
aoqi@0:         LAMBDA("x -> null"),
aoqi@0:         MREF("this::m");
aoqi@0: 
aoqi@0:         String exprStr;
aoqi@0: 
aoqi@0:         private ExprKind(String exprStr) {
aoqi@0:             this.exprStr = exprStr;
aoqi@0:         }
aoqi@0:     }
aoqi@0: 
aoqi@0:     enum MethodKind {
aoqi@0:         NONE(""),
aoqi@0:         NON_GENERIC("public abstract #R m(#ARG s) throws #T;"),
aoqi@0:         GENERIC("public abstract <X> #R m(#ARG s) throws #T;");
aoqi@0: 
aoqi@0:         String methodTemplate;
aoqi@0: 
aoqi@0:         private MethodKind(String methodTemplate) {
aoqi@0:             this.methodTemplate = methodTemplate;
aoqi@0:         }
aoqi@0: 
aoqi@0:         String getMethod(TypeKind retType, TypeKind argType, TypeKind thrownType) {
aoqi@0:             return methodTemplate.replaceAll("#R", retType.typeStr).
aoqi@0:                     replaceAll("#ARG", argType.typeStr).
aoqi@0:                     replaceAll("#T", thrownType.typeStr);
aoqi@0:         }
aoqi@0:     }
aoqi@0: 
aoqi@0:     public static void main(String[] args) throws Exception {
aoqi@0:         for (PackageKind samPkg : PackageKind.values()) {
aoqi@0:             for (ModifierKind modKind : ModifierKind.values()) {
aoqi@0:                 for (SamKind samKind : SamKind.values()) {
aoqi@0:                     for (MethodKind samMeth : MethodKind.values()) {
aoqi@0:                         for (MethodKind clientMeth : MethodKind.values()) {
aoqi@0:                             for (TypeKind retType : TypeKind.values()) {
aoqi@0:                                 for (TypeKind argType : TypeKind.values()) {
aoqi@0:                                     for (TypeKind thrownType : TypeKind.values()) {
aoqi@0:                                         for (ExprKind exprKind : ExprKind.values()) {
aoqi@0:                                             pool.execute(
aoqi@0:                                                 new FunctionalInterfaceConversionTest(
aoqi@0:                                                     samPkg, modKind, samKind,
aoqi@0:                                                     samMeth, clientMeth, retType,
aoqi@0:                                                     argType, thrownType, exprKind));
aoqi@0:                                         }
aoqi@0:                                     }
aoqi@0:                                 }
aoqi@0:                             }
aoqi@0:                         }
aoqi@0:                     }
aoqi@0:                 }
aoqi@0:             }
aoqi@0:         }
aoqi@0: 
aoqi@0:         checkAfterExec(false);
aoqi@0:     }
aoqi@0: 
aoqi@0:     PackageKind samPkg;
aoqi@0:     ModifierKind modKind;
aoqi@0:     SamKind samKind;
aoqi@0:     MethodKind samMeth;
aoqi@0:     MethodKind clientMeth;
aoqi@0:     TypeKind retType;
aoqi@0:     TypeKind argType;
aoqi@0:     TypeKind thrownType;
aoqi@0:     ExprKind exprKind;
aoqi@0:     DiagnosticChecker dc;
aoqi@0: 
aoqi@0:     SourceFile samSourceFile = new SourceFile("Sam.java", "#P \n #C") {
aoqi@0:         @Override
aoqi@0:         public String toString() {
aoqi@0:             return template.replaceAll("#P", samPkg.getPkgDecl()).
aoqi@0:                     replaceAll("#C", samKind.getSam(
aoqi@0:                     samMeth.getMethod(retType, argType, thrownType)));
aoqi@0:         }
aoqi@0:     };
aoqi@0: 
aoqi@0:     SourceFile pkgClassSourceFile =
aoqi@0:             new SourceFile("PackageClass.java",
aoqi@0:                            "#P\n #M class PackageClass extends Exception { }") {
aoqi@0:         @Override
aoqi@0:         public String toString() {
aoqi@0:             return template.replaceAll("#P", samPkg.getPkgDecl()).
aoqi@0:                     replaceAll("#M", modKind.modifier_str);
aoqi@0:         }
aoqi@0:     };
aoqi@0: 
aoqi@0:     SourceFile clientSourceFile =
aoqi@0:             new SourceFile("Client.java",
aoqi@0:                            "#I\n abstract class Client { \n" +
aoqi@0:                            "  Sam s = #E;\n" +
aoqi@0:                            "  #M \n }") {
aoqi@0:         @Override
aoqi@0:         public String toString() {
aoqi@0:             return template.replaceAll("#I", samPkg.getImportStat())
aoqi@0:                     .replaceAll("#E", exprKind.exprStr)
aoqi@0:                     .replaceAll("#M", clientMeth.getMethod(retType, argType, thrownType));
aoqi@0:         }
aoqi@0:     };
aoqi@0: 
aoqi@0:     FunctionalInterfaceConversionTest(PackageKind samPkg, ModifierKind modKind,
aoqi@0:             SamKind samKind, MethodKind samMeth, MethodKind clientMeth,
aoqi@0:             TypeKind retType, TypeKind argType, TypeKind thrownType,
aoqi@0:             ExprKind exprKind) {
aoqi@0:         this.samPkg = samPkg;
aoqi@0:         this.modKind = modKind;
aoqi@0:         this.samKind = samKind;
aoqi@0:         this.samMeth = samMeth;
aoqi@0:         this.clientMeth = clientMeth;
aoqi@0:         this.retType = retType;
aoqi@0:         this.argType = argType;
aoqi@0:         this.thrownType = thrownType;
aoqi@0:         this.exprKind = exprKind;
aoqi@0:         this.dc = new DiagnosticChecker();
aoqi@0:     }
aoqi@0: 
aoqi@0:     @Override
aoqi@0:     public void run() {
aoqi@0:         final JavaCompiler tool = ToolProvider.getSystemJavaCompiler();
aoqi@0: 
aoqi@0:         JavacTask ct = (JavacTask)tool.getTask(null, fm.get(), dc, null, null,
aoqi@0:                 Arrays.asList(samSourceFile, pkgClassSourceFile, clientSourceFile));
aoqi@0:         try {
aoqi@0:             ct.analyze();
aoqi@0:         } catch (IOException ex) {
aoqi@0:             throw new AssertionError("Test failing with cause", ex.getCause());
aoqi@0:         }
aoqi@0:         if (dc.errorFound == checkSamConversion()) {
aoqi@0:             throw new AssertionError(samSourceFile + "\n\n" +
aoqi@0:                 pkgClassSourceFile + "\n\n" + clientSourceFile);
aoqi@0:         }
aoqi@0:     }
aoqi@0: 
aoqi@0:     boolean checkSamConversion() {
aoqi@0:         if (samKind != SamKind.INTERFACE) {
aoqi@0:             //sam type must be an interface
aoqi@0:             return false;
aoqi@0:         } else if (samMeth == MethodKind.NONE) {
aoqi@0:             //interface must have at least a method
aoqi@0:             return false;
aoqi@0:         } else if (exprKind == ExprKind.LAMBDA &&
aoqi@0:                 samMeth != MethodKind.NON_GENERIC) {
aoqi@0:             //target method for lambda must be non-generic
aoqi@0:             return false;
aoqi@0:         } else if (exprKind == ExprKind.MREF &&
aoqi@0:                 clientMeth == MethodKind.NONE) {
aoqi@0:             return false;
aoqi@0:         } else if (samPkg != PackageKind.NO_PKG &&
aoqi@0:                 modKind != ModifierKind.PUBLIC &&
aoqi@0:                 (retType == TypeKind.PKG_CLASS ||
aoqi@0:                 argType == TypeKind.PKG_CLASS ||
aoqi@0:                 thrownType == TypeKind.PKG_CLASS)) {
aoqi@0:             //target must not contain inaccessible types
aoqi@0:             return false;
aoqi@0:         } else {
aoqi@0:             return true;
aoqi@0:         }
aoqi@0:     }
aoqi@0: 
aoqi@0:     abstract class SourceFile extends SimpleJavaFileObject {
aoqi@0: 
aoqi@0:         protected String template;
aoqi@0: 
aoqi@0:         public SourceFile(String filename, String template) {
aoqi@0:             super(URI.create("myfo:/" + filename), JavaFileObject.Kind.SOURCE);
aoqi@0:             this.template = template;
aoqi@0:         }
aoqi@0: 
aoqi@0:         @Override
aoqi@0:         public CharSequence getCharContent(boolean ignoreEncodingErrors) {
aoqi@0:             return toString();
aoqi@0:         }
aoqi@0: 
aoqi@0:         @Override
aoqi@0:         public abstract String toString();
aoqi@0:     }
aoqi@0: 
aoqi@0:     static class DiagnosticChecker
aoqi@0:         implements javax.tools.DiagnosticListener<JavaFileObject> {
aoqi@0: 
aoqi@0:         boolean errorFound = false;
aoqi@0: 
aoqi@0:         @Override
aoqi@0:         public void report(Diagnostic<? extends JavaFileObject> diagnostic) {
aoqi@0:             if (diagnostic.getKind() == Diagnostic.Kind.ERROR) {
aoqi@0:                 errorFound = true;
aoqi@0:             }
aoqi@0:         }
aoqi@0:     }
aoqi@0: }