1 /*

     2  * Copyright (c) 2004, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.  Oracle designates this

     8  * particular file as subject to the "Classpath" exception as provided

     9  * by Oracle in the LICENSE file that accompanied this code.

    10  *

    11  * This code is distributed in the hope that it will be useful, but WITHOUT

    12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    14  * version 2 for more details (a copy is included in the LICENSE file that

    15  * accompanied this code).

    16  *

    17  * You should have received a copy of the GNU General Public License version

    18  * 2 along with this work; if not, write to the Free Software Foundation,

    19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    20  *

    21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    22  * or visit www.oracle.com if you need additional information or have any

    23  * questions.

    24  */

    25 

    26 package com.sun.tools.apt.mirror.declaration;

    27 

    28 

    29 import java.util.Collection;

    30 import java.util.ArrayList;

    31 

    32 import com.sun.mirror.declaration.*;

    33 import com.sun.mirror.util.SourcePosition;

    34 import com.sun.tools.apt.mirror.AptEnv;

    35 import com.sun.tools.javac.code.Attribute;

    36 import com.sun.tools.javac.code.Symbol.*;

    37 import com.sun.tools.javac.code.TypeTags;

    38 

    39 

    40 /**

    41  * Implementation of AnnotationValue

    42  */

    43 @SuppressWarnings("deprecation")

    44 public class AnnotationValueImpl implements AnnotationValue {

    45 

    46     protected final AptEnv env;

    47     protected final Attribute attr;

    48     protected final AnnotationMirrorImpl annotation;

    49 

    50     AnnotationValueImpl(AptEnv env, Attribute attr, AnnotationMirrorImpl annotation) {

    51         this.env = env;

    52         this.attr = attr;

    53         this.annotation = annotation;

    54     }

    55 

    56 

    57     /**

    58      * {@inheritDoc}

    59      */

    60     public String toString() {

    61         StringBuilder sb = new StringBuilder();

    62         Constants.Formatter fmtr = Constants.getFormatter(sb);

    63 

    64         fmtr.append(getValue());

    65         return fmtr.toString();

    66     }

    67 

    68     /**

    69      * {@inheritDoc}

    70      */

    71     public Object getValue() {

    72         ValueVisitor vv = new ValueVisitor();

    73         attr.accept(vv);

    74         return vv.value;

    75     }

    76 

    77 

    78     public SourcePosition getPosition() {

    79         // Imprecise implementation; just return position of enclosing

    80         // annotation.

    81         return (annotation == null) ? null : annotation.getPosition();

    82     }

    83 

    84     private class ValueVisitor implements Attribute.Visitor {

    85 

    86         public Object value;

    87 

    88         public void visitConstant(Attribute.Constant c) {

    89             value = Constants.decodeConstant(c.value, c.type);

    90         }

    91 

    92         public void visitClass(Attribute.Class c) {

    93             value = env.typeMaker.getType(

    94                         env.jctypes.erasure(c.type));

    95         }

    96 

    97         public void visitEnum(Attribute.Enum e) {

    98             value = env.declMaker.getFieldDeclaration(e.value);

    99         }

   100 

   101         public void visitCompound(Attribute.Compound c) {

   102             value = new AnnotationMirrorImpl(env, c,

   103                                              (annotation == null) ?

   104                                              null :

   105                                              annotation.getDeclaration());

   106         }

   107 

   108         public void visitArray(Attribute.Array a) {

   109             ArrayList<AnnotationValue> vals =

   110                 new ArrayList<AnnotationValue>(a.values.length);

   111             for (Attribute elem : a.values) {

   112                 vals.add(new AnnotationValueImpl(env, elem, annotation));

   113             }

   114             value = vals;

   115         }

   116 

   117         public void visitError(Attribute.Error e) {

   118             value = "<error>";  // javac will already have logged an error msg

   119         }

   120     }

   121 }