jdk8-mips64-public/langtools: test/tools/javac/lambda/MethodReferenceParserTest.java@3343b22e2761 (annotated)

test/tools/javac/lambda/MethodReferenceParserTest.java@3343b22e2761 (annotated)

test/tools/javac/lambda/MethodReferenceParserTest.java

Mon, 28 Nov 2011 16:05:46 +0000

author: mcimadamore
date: Mon, 28 Nov 2011 16:05:46 +0000
changeset 1145: 3343b22e2761
child 1150: e55270a7a022
permissions: -rw-r--r--

7115052: Add parser support for method references
Summary: Add support for parsing method references to JavacParser
Reviewed-by: jjg

 /*
  * 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 7115052
  * @summary Add parser support for method references
  */
 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 MethodReferenceParserTest {
     static int checkCount = 0;
     enum ReferenceKind {
         METHOD_REF("#Q##Gm"),
         CONSTRUCTOR_REF("#Q##Gnew"),
         ERR_SUPER("#Q##Gsuper"),
         ERR_METH0("#Q##Gm()"),
         ERR_METH1("#Q##Gm(X)"),
         ERR_CONSTR0("#Q##Gnew()"),
         ERR_CONSTR1("#Q##Gnew(X)");
         String referenceTemplate;
         ReferenceKind(String referenceTemplate) {
             this.referenceTemplate = referenceTemplate;
         }
         String getReferenceString(QualifierKind qk, GenericKind gk) {
             return referenceTemplate
                     .replaceAll("#Q", qk.qualifier)
                     .replaceAll("#G", gk.typeParameters);
         }
         boolean erroneous() {
             switch (this) {
                 case ERR_SUPER:
                 case ERR_METH0:
                 case ERR_METH1:
                 case ERR_CONSTR0:
                 case ERR_CONSTR1:
                     return true;
                 default: return false;
             }
         }
     }
     enum GenericKind {
         NONE(""),
         ONE("<X>"),
         TWO("<X,Y>");
         String typeParameters;
         GenericKind(String typeParameters) {
             this.typeParameters = typeParameters;
         }
     }
     enum QualifierKind {
         THIS("this"),
         SUPER("super"),
         NEW("new Foo()"),
         METHOD("m()"),
         FIELD("a.f"),
         UBOUND_SIMPLE("A"),
         UNBOUND_GENERIC1("A<X>"),
         UNBOUND_GENERIC2("A<X, Y>"),
         UNBOUND_GENERIC3("A<? extends X, ? super Y>");
         String qualifier;
         QualifierKind(String qualifier) {
             this.qualifier = qualifier;
         }
     }
     enum ExprKind {
         NONE("#R#S"),
         SINGLE_PAREN1("(#R#S)"),
         SINGLE_PAREN2("(#R)#S"),
         DOUBLE_PAREN1("((#R#S))"),
         DOUBLE_PAREN2("((#R)#S)"),
         DOUBLE_PAREN3("((#R))#S");
         String expressionTemplate;
         ExprKind(String expressionTemplate) {
             this.expressionTemplate = expressionTemplate;
         }
         String expressionString(ReferenceKind rk, QualifierKind qk, GenericKind gk, SubExprKind sk) {
             return expressionTemplate
                     .replaceAll("#R", rk.getReferenceString(qk, gk))
                     .replaceAll("#S", sk.subExpression);
         }
     }
     enum SubExprKind {
         NONE(""),
         SELECT_FIELD(".f"),
         SELECT_METHOD(".f()"),
         SELECT_NEW(".new Foo()"),
         POSTINC("++"),
         POSTDEC("--");
         String subExpression;
         SubExprKind(String subExpression) {
             this.subExpression = subExpression;
         }
     }
     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 (ReferenceKind rk : ReferenceKind.values()) {
             for (QualifierKind qk : QualifierKind.values()) {
                 for (GenericKind gk : GenericKind.values()) {
                     for (SubExprKind sk : SubExprKind.values()) {
                         for (ExprKind ek : ExprKind.values()) {
                             new MethodReferenceParserTest(rk, qk, gk, sk, ek).run(comp, fm);
                         }
                     }
                 }
             }
         }
         System.out.println("Total check executed: " + checkCount);
     }
     ReferenceKind rk;
     QualifierKind qk;
     GenericKind gk;
     SubExprKind sk;
     ExprKind ek;
     JavaSource source;
     DiagnosticChecker diagChecker;
     MethodReferenceParserTest(ReferenceKind rk, QualifierKind qk, GenericKind gk, SubExprKind sk, ExprKind ek) {
         this.rk = rk;
         this.qk = qk;
         this.gk = gk;
         this.sk = sk;
         this.ek = ek;
         this.source = new JavaSource();
         this.diagChecker = new DiagnosticChecker();
     }
     class JavaSource extends SimpleJavaFileObject {
         String template = "class Test {\n" +
                           "   SAM s = #E;\n" +
                           "}";
         String source;
         public JavaSource() {
             super(URI.create("myfo:/Test.java"), JavaFileObject.Kind.SOURCE);
             source = template.replaceAll("#E", ek.expressionString(rk, qk, gk, sk));
         }
         @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("-XDallowMethodReferences"), null, Arrays.asList(source));
         try {
             ct.parse();
         } catch (Throwable ex) {
             throw new AssertionError("Error thrown when parsing the following source:\n" + source.getCharContent(true));
         }
         check();
     }
     void check() {
         checkCount++;
         if (diagChecker.errorFound != rk.erroneous()) {
             throw new Error("invalid diagnostics for source:\n" +
                 source.getCharContent(true) +
                 "\nFound error: " + diagChecker.errorFound +
                 "\nExpected error: " + rk.erroneous());
         }
     }
     static class DiagnosticChecker implements javax.tools.DiagnosticListener<JavaFileObject> {
         boolean errorFound;
         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/MethodReferenceParserTest.java@3343b22e2761 (annotated)

test/tools/javac/lambda/MethodReferenceParserTest.java