Mercurial > jdk8-mips64-public > langtools / changeset

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/test/tools/javac/processing/model/element/TestTypeParameter.java	Fri Feb 11 17:10:26 2011 -0800
     1.3 @@ -0,0 +1,129 @@
     1.4 +/*
     1.5 + * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
     1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
     1.7 + *
     1.8 + * This code is free software; you can redistribute it and/or modify it
     1.9 + * under the terms of the GNU General Public License version 2 only, as
    1.10 + * published by the Free Software Foundation.
    1.11 + *
    1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
    1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
    1.14 + * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    1.15 + * version 2 for more details (a copy is included in the LICENSE file that
    1.16 + * accompanied this code).
    1.17 + *
    1.18 + * You should have received a copy of the GNU General Public License version
    1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
    1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
    1.21 + *
    1.22 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
    1.23 + * or visit www.oracle.com if you need additional information or have any
    1.24 + * questions.
    1.25 + */
    1.26 +
    1.27 +/*
    1.28 + * @test
    1.29 + * @bug 6505047
    1.30 + * @summary javax.lang.model.element.Element.getEnclosingElement() doesn't return null for type parameter
    1.31 + * @library ../../../lib
    1.32 + * @build JavacTestingAbstractProcessor TestTypeParameter
    1.33 + * @compile -processor TestTypeParameter -proc:only TestTypeParameter.java
    1.34 + */
    1.35 +
    1.36 +import java.util.*;
    1.37 +import javax.annotation.processing.*;
    1.38 +import javax.lang.model.element.*;
    1.39 +import javax.lang.model.util.*;
    1.40 +import javax.tools.*;
    1.41 +
    1.42 +public class TestTypeParameter<T> extends JavacTestingAbstractProcessor {
    1.43 +    int round = 0;
    1.44 +
    1.45 +    public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {
    1.46 +        if (++round == 1) {
    1.47 +            int found = (new Scanner()).scan(roundEnv.getRootElements(), null);
    1.48 +            if (found == expect) {
    1.49 +                note("generic elements found and verified: " + found);
    1.50 +            } else {
    1.51 +                error("unexpected number of results: expected " + expect
    1.52 +                        + ", found " + found);
    1.53 +            }
    1.54 +
    1.55 +        }
    1.56 +        return true;
    1.57 +    }
    1.58 +
    1.59 +    class Scanner extends ElementScanner7<Integer,Void> {
    1.60 +        @Override
    1.61 +        public Integer visitExecutable(ExecutableElement e, Void p) {
    1.62 +            super.visitExecutable(e, p);
    1.63 +            found += check(e, e.getTypeParameters());
    1.64 +            return found;
    1.65 +        }
    1.66 +
    1.67 +        @Override
    1.68 +        public Integer visitType(TypeElement e, Void p) {
    1.69 +            super.visitType(e, p);
    1.70 +            found += check(e, e.getTypeParameters());
    1.71 +            return found;
    1.72 +        }
    1.73 +
    1.74 +        int found;
    1.75 +    }
    1.76 +
    1.77 +    /**
    1.78 +     * Check if type parameters, if any, have expected owner.
    1.79 +     * Return 1 if typarams not empty and all have expected owner, else return 0.
    1.80 +     */
    1.81 +    int check(Element e, List<? extends TypeParameterElement> typarams) {
    1.82 +        note("checking " + e, e);
    1.83 +        if (typarams.isEmpty()) {
    1.84 +            note("no type parameters found", e);
    1.85 +            return 0;
    1.86 +        }
    1.87 +        for (TypeParameterElement tpe: typarams) {
    1.88 +            note("checking type parameter " + tpe, tpe);
    1.89 +            if (tpe.getEnclosingElement() != e) {
    1.90 +                error("unexpected owner; expected: " + e
    1.91 +                        + ", found " + tpe.getEnclosingElement(),
    1.92 +                        tpe);
    1.93 +                return 0;
    1.94 +            }
    1.95 +            if (tpe.getEnclosingElement() != tpe.getGenericElement()) {
    1.96 +                error("unexpected generic element; expected: " + tpe.getGenericElement()
    1.97 +                        + ", found " + tpe.getEnclosingElement(),
    1.98 +                        tpe);
    1.99 +                return 0;
   1.100 +            }
   1.101 +        }
   1.102 +        note("verified " + e, e);
   1.103 +        return 1;
   1.104 +    }
   1.105 +
   1.106 +    void note(String msg) {
   1.107 +        messager.printMessage(Diagnostic.Kind.NOTE, msg);
   1.108 +    }
   1.109 +
   1.110 +    void note(String msg, Element e) {
   1.111 +        messager.printMessage(Diagnostic.Kind.NOTE, msg, e);
   1.112 +    }
   1.113 +
   1.114 +    void error(String msg, Element e) {
   1.115 +        messager.printMessage(Diagnostic.Kind.ERROR, msg, e);
   1.116 +    }
   1.117 +
   1.118 +    void error(String msg) {
   1.119 +        messager.printMessage(Diagnostic.Kind.ERROR, msg);
   1.120 +    }
   1.121 +
   1.122 +    // additional generic elements to test
   1.123 +    <X> X m(X x) { return x; }
   1.124 +
   1.125 +    interface Intf<X> { X m() ; }
   1.126 +
   1.127 +    class Class<X> {
   1.128 +        <Y> Class() { }
   1.129 +    }
   1.130 +
   1.131 +    final int expect = 5;  // top level class, plus preceding examples
   1.132 +}