aoqi@0: /*
aoqi@0:  * Copyright (c) 2012, 2013, 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 8002099
aoqi@0:  * @summary Add support for intersection types in cast expression
aoqi@0:  */
aoqi@0: 
aoqi@0: import com.sun.source.util.JavacTask;
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.StandardJavaFileManager;
aoqi@0: import javax.tools.ToolProvider;
aoqi@0: 
aoqi@0: public class IntersectionTypeParserTest {
aoqi@0: 
aoqi@0:     static int checkCount = 0;
aoqi@0: 
aoqi@0:     enum TypeKind {
aoqi@0:         SIMPLE("A"),
aoqi@0:         GENERIC("A<X>"),
aoqi@0:         WILDCARD("A<? super X, ? extends Y>");
aoqi@0: 
aoqi@0:         String typeStr;
aoqi@0: 
aoqi@0:         TypeKind(String typeStr) {
aoqi@0:             this.typeStr = typeStr;
aoqi@0:         }
aoqi@0:     }
aoqi@0: 
aoqi@0:     enum ArrayKind {
aoqi@0:         NONE(""),
aoqi@0:         SINGLE("[]"),
aoqi@0:         DOUBLE("[][]");
aoqi@0: 
aoqi@0:         String arrStr;
aoqi@0: 
aoqi@0:         ArrayKind(String arrStr) {
aoqi@0:             this.arrStr = arrStr;
aoqi@0:         }
aoqi@0:     }
aoqi@0: 
aoqi@0:     static class Type {
aoqi@0:         TypeKind tk;
aoqi@0:         ArrayKind ak;
aoqi@0: 
aoqi@0:         Type(TypeKind tk, ArrayKind ak) {
aoqi@0:             this.tk = tk;
aoqi@0:             this.ak = ak;
aoqi@0:         }
aoqi@0: 
aoqi@0:         String asString() {
aoqi@0:             return tk.typeStr + ak.arrStr;
aoqi@0:         }
aoqi@0:     }
aoqi@0: 
aoqi@0:     enum CastKind {
aoqi@0:         ONE("(#T0)", 1),
aoqi@0:         TWO("(#T0 & T1)", 2),
aoqi@0:         THREE("(#T0 & #T1 & #T2)", 3);
aoqi@0: 
aoqi@0:         String castTemplate;
aoqi@0:         int nBounds;
aoqi@0: 
aoqi@0:         CastKind(String castTemplate, int nBounds) {
aoqi@0:             this.castTemplate = castTemplate;
aoqi@0:             this.nBounds = nBounds;
aoqi@0:         }
aoqi@0: 
aoqi@0:         String asString(Type... types) {
aoqi@0:             String res = castTemplate;
aoqi@0:             for (int i = 0; i < nBounds ; i++) {
aoqi@0:                 res = res.replaceAll(String.format("#T%d", i), types[i].asString());
aoqi@0:             }
aoqi@0:             return res;
aoqi@0:         }
aoqi@0:     }
aoqi@0: 
aoqi@0:     public static void main(String... args) throws Exception {
aoqi@0:         //create default shared JavaCompiler - reused across multiple compilations
aoqi@0:         JavaCompiler comp = ToolProvider.getSystemJavaCompiler();
aoqi@0:         StandardJavaFileManager fm = comp.getStandardFileManager(null, null, null);
aoqi@0: 
aoqi@0:         for (CastKind ck : CastKind.values()) {
aoqi@0:             for (TypeKind t1 : TypeKind.values()) {
aoqi@0:                 for (ArrayKind ak1 : ArrayKind.values()) {
aoqi@0:                     Type typ1 = new Type(t1, ak1);
aoqi@0:                     if (ck.nBounds == 1) {
aoqi@0:                         new IntersectionTypeParserTest(ck, typ1).run(comp, fm);
aoqi@0:                         continue;
aoqi@0:                     }
aoqi@0:                     for (TypeKind t2 : TypeKind.values()) {
aoqi@0:                         for (ArrayKind ak2 : ArrayKind.values()) {
aoqi@0:                             Type typ2 = new Type(t2, ak2);
aoqi@0:                             if (ck.nBounds == 2) {
aoqi@0:                                 new IntersectionTypeParserTest(ck, typ1, typ2).run(comp, fm);
aoqi@0:                                 continue;
aoqi@0:                             }
aoqi@0:                             for (TypeKind t3 : TypeKind.values()) {
aoqi@0:                                 for (ArrayKind ak3 : ArrayKind.values()) {
aoqi@0:                                     Type typ3 = new Type(t3, ak3);
aoqi@0:                                     new IntersectionTypeParserTest(ck, typ1, typ2, typ3).run(comp, fm);
aoqi@0:                                 }
aoqi@0:                             }
aoqi@0:                         }
aoqi@0:                     }
aoqi@0:                 }
aoqi@0:             }
aoqi@0:         }
aoqi@0:         System.out.println("Total check executed: " + checkCount);
aoqi@0:     }
aoqi@0: 
aoqi@0:     CastKind ck;
aoqi@0:     Type[] types;
aoqi@0:     JavaSource source;
aoqi@0:     DiagnosticChecker diagChecker;
aoqi@0: 
aoqi@0:     IntersectionTypeParserTest(CastKind ck, Type... types) {
aoqi@0:         this.ck = ck;
aoqi@0:         this.types = types;
aoqi@0:         this.source = new JavaSource();
aoqi@0:         this.diagChecker = new DiagnosticChecker();
aoqi@0:     }
aoqi@0: 
aoqi@0:     class JavaSource extends SimpleJavaFileObject {
aoqi@0: 
aoqi@0:         String bodyTemplate = "class Test {\n" +
aoqi@0:                               "   void test() {\n" +
aoqi@0:                               "      Object o = #Cnull;\n" +
aoqi@0:                               "   } }";
aoqi@0: 
aoqi@0:         String source = "";
aoqi@0: 
aoqi@0:         public JavaSource() {
aoqi@0:             super(URI.create("myfo:/Test.java"), JavaFileObject.Kind.SOURCE);
aoqi@0:             source += bodyTemplate.replaceAll("#C", ck.asString(types));
aoqi@0:         }
aoqi@0: 
aoqi@0:         @Override
aoqi@0:         public CharSequence getCharContent(boolean ignoreEncodingErrors) {
aoqi@0:             return source;
aoqi@0:         }
aoqi@0:     }
aoqi@0: 
aoqi@0:     void run(JavaCompiler tool, StandardJavaFileManager fm) throws Exception {
aoqi@0:         checkCount++;
aoqi@0:         JavacTask ct = (JavacTask)tool.getTask(null, fm, diagChecker,
aoqi@0:                 null, null, Arrays.asList(source));
aoqi@0:         ct.parse();
aoqi@0:         if (diagChecker.errorFound) {
aoqi@0:             throw new Error("Unexpected parser error for source:\n" +
aoqi@0:                 source.getCharContent(true));
aoqi@0:         }
aoqi@0:     }
aoqi@0: 
aoqi@0:     static class DiagnosticChecker implements javax.tools.DiagnosticListener<JavaFileObject> {
aoqi@0: 
aoqi@0:         boolean errorFound;
aoqi@0: 
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: }