Mercurial > jdk8-mips64-public > langtools / file revision

 /*

  * Copyright (c) 2011, 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 7027157

  * @summary Project Coin: javac warnings for AutoCloseable.close throwing InterruptedException

  */

 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 InterruptedExceptionTest {

     enum XlintOption {

         NONE("none"),

         TRY("try");

         String opt;

         XlintOption(String opt) {

             this.opt = opt;

         }

         String getXlintOption() {

             return "-Xlint:" + opt;

         }

     }

     enum SuppressLevel {

         NONE,

         SUPPRESS;

         String getSuppressAnno() {

             return this == SUPPRESS ?

                 "@SuppressWarnings(\"try\")" :

                 "";

         }

     }

     enum ClassKind {

         ABSTRACT_CLASS("abstract class", "implements", false),

         CLASS("class", "implements", true),

         INTERFACE("interface", "extends", false);

         String kindName;

         String extendsClause;

         boolean hasBody;

         private ClassKind(String kindName, String extendsClause, boolean hasBody) {

             this.kindName = kindName;

             this.extendsClause = extendsClause;

             this.hasBody = hasBody;

         }

         String getBody() {

             return hasBody ? "{}" : ";";

         }

     }

     enum ExceptionKind {

         NONE("", false),

         EXCEPTION("Exception", true),

         INTERRUPTED_EXCEPTION("InterruptedException", true),

         ILLEGAL_ARGUMENT_EXCEPTION("IllegalArgumentException", false),

         X("X", false);

         String exName;

         boolean shouldWarn;

         private ExceptionKind(String exName, boolean shouldWarn) {

             this.exName = exName;

             this.shouldWarn = shouldWarn;

         }

         String getThrowsClause() {

             return this == NONE ? "" : "throws " + exName;

         }

         String getTypeArguments(ExceptionKind decl) {

             return (decl != X || this == NONE) ? "" : "<" + exName + ">";

         }

         String getTypeParameter() {

             return this == X ? "<X extends Exception>" : "";

         }

     }

     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 (XlintOption xlint : XlintOption.values()) {

             for (SuppressLevel suppress_decl : SuppressLevel.values()) {

                 for (SuppressLevel suppress_use : SuppressLevel.values()) {

                     for (ClassKind ck : ClassKind.values()) {

                         for (ExceptionKind ek_decl : ExceptionKind.values()) {

                             for (ExceptionKind ek_use : ExceptionKind.values()) {

                                 new InterruptedExceptionTest(xlint, suppress_decl,

                                         suppress_use, ck, ek_decl, ek_use).run(comp, fm);

                             }

                         }

                     }

                 }

             }

         }

     }

     XlintOption xlint;

     SuppressLevel suppress_decl;

     SuppressLevel suppress_use;

     ClassKind ck;

     ExceptionKind ek_decl;

     ExceptionKind ek_use;

     JavaSource source;

     DiagnosticChecker diagChecker;

     InterruptedExceptionTest(XlintOption xlint, SuppressLevel suppress_decl, SuppressLevel suppress_use,

             ClassKind ck, ExceptionKind ek_decl, ExceptionKind ek_use) {

         this.xlint = xlint;

         this.suppress_decl = suppress_decl;

         this.suppress_use = suppress_use;

         this.ck = ck;

         this.ek_decl = ek_decl;

         this.ek_use = ek_use;

         this.source = new JavaSource();

         this.diagChecker = new DiagnosticChecker();

     }

     class JavaSource extends SimpleJavaFileObject {

         String template = "#S1 #CK Resource#G #EC AutoCloseable {\n" +

                               "public void close() #TK #BK\n" +

                           "}\n" +

                           "class Test {\n" +

                               "#S2 <X> void test() {\n" +

                                  "try (Resource#PK r = null) { }\n" +

                               "}\n" +

                           "}\n";

         String source;

         public JavaSource() {

             super(URI.create("myfo:/Test.java"), JavaFileObject.Kind.SOURCE);

             source = template.replace("#S1", suppress_decl.getSuppressAnno())

                     .replace("#S2", suppress_use.getSuppressAnno())

                     .replace("#CK", ck.kindName)

                     .replace("#EC", ck.extendsClause)

                     .replace("#G", ek_decl.getTypeParameter())

                     .replace("#TK", ek_decl.getThrowsClause())

                     .replace("#BK", ck.getBody())

                     .replace("#PK", ek_use.getTypeArguments(ek_decl));

         }

         @Override

         public CharSequence getCharContent(boolean ignoreEncodingErrors) {

             return source;

         }

     }

     void run(JavaCompiler tool, StandardJavaFileManager fm) throws Exception {

         JavacTask ct = (JavacTask)tool.getTask(null, fm, diagChecker,

                 Arrays.asList(xlint.getXlintOption()), null, Arrays.asList(source));

         ct.analyze();

         check();

     }

     void check() {

         boolean shouldWarnDecl = ek_decl.shouldWarn &&

                 xlint == XlintOption.TRY &&

                 suppress_decl != SuppressLevel.SUPPRESS;

         boolean shouldWarnUse = (ek_decl.shouldWarn ||

                 ((ek_use.shouldWarn || ek_use == ExceptionKind.NONE) && ek_decl == ExceptionKind.X)) &&

                 xlint == XlintOption.TRY &&

                 suppress_use != SuppressLevel.SUPPRESS;

         int foundWarnings = 0;

         if (shouldWarnDecl) foundWarnings++;

         if (shouldWarnUse) foundWarnings++;

         if (foundWarnings != diagChecker.tryWarnFound) {

             throw new Error("invalid diagnostics for source:\n" +

                 source.getCharContent(true) +

                 "\nOptions: " + xlint.getXlintOption() +

                 "\nFound warnings: " + diagChecker.tryWarnFound +

                 "\nExpected decl warning: " + shouldWarnDecl +

                 "\nExpected use warning: " + shouldWarnUse);

         }

     }

     static class DiagnosticChecker implements javax.tools.DiagnosticListener<JavaFileObject> {

         int tryWarnFound;

         public void report(Diagnostic<? extends JavaFileObject> diagnostic) {

             if (diagnostic.getKind() == Diagnostic.Kind.WARNING &&

                     diagnostic.getCode().contains("try.resource.throws.interrupted.exc")) {

                 tryWarnFound++;

             }

         }

     }

 }