--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/langtools/test/tools/javac/lambda/FunctionalInterfaceConversionTest.java Fri Nov 30 15:14:25 2012 +0000
@@ -0,0 +1,280 @@
+/*
+ * 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;
+ }
+ }
+ }
+}