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

 /*

  * Copyright (c) 2009, 2013, 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.  Oracle designates this

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

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

  *

  * 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.

  */

 package com.sun.tools.javap;

 import com.sun.tools.classfile.Attribute;

 import com.sun.tools.classfile.Code_attribute;

 import com.sun.tools.classfile.TypeAnnotation;

 import com.sun.tools.classfile.TypeAnnotation.Position;

 import com.sun.tools.classfile.Instruction;

 import com.sun.tools.classfile.Method;

 import com.sun.tools.classfile.RuntimeInvisibleTypeAnnotations_attribute;

 import com.sun.tools.classfile.RuntimeTypeAnnotations_attribute;

 import com.sun.tools.classfile.RuntimeVisibleTypeAnnotations_attribute;

 import java.util.ArrayList;

 import java.util.HashMap;

 import java.util.List;

 import java.util.Map;

 import com.sun.tools.javac.util.StringUtils;

 /**

  * Annotate instructions with details about type annotations.

  *

  *  <p><b>This is NOT part of any supported API.

  *  If you write code that depends on this, you do so at your own risk.

  *  This code and its internal interfaces are subject to change or

  *  deletion without notice.</b>

  */

 public class TypeAnnotationWriter extends InstructionDetailWriter {

     public enum NoteKind { VISIBLE, INVISIBLE };

     public static class Note {

         Note(NoteKind kind, TypeAnnotation anno) {

             this.kind = kind;

             this.anno = anno;

         }

         public final NoteKind kind;

         public final TypeAnnotation anno;

     }

     static TypeAnnotationWriter instance(Context context) {

         TypeAnnotationWriter instance = context.get(TypeAnnotationWriter.class);

         if (instance == null)

             instance = new TypeAnnotationWriter(context);

         return instance;

     }

     protected TypeAnnotationWriter(Context context) {

         super(context);

         context.put(TypeAnnotationWriter.class, this);

         annotationWriter = AnnotationWriter.instance(context);

         classWriter = ClassWriter.instance(context);

     }

     public void reset(Code_attribute attr) {

         Method m = classWriter.getMethod();

         pcMap = new HashMap<Integer, List<Note>>();

         check(NoteKind.VISIBLE, (RuntimeVisibleTypeAnnotations_attribute) m.attributes.get(Attribute.RuntimeVisibleTypeAnnotations));

         check(NoteKind.INVISIBLE, (RuntimeInvisibleTypeAnnotations_attribute) m.attributes.get(Attribute.RuntimeInvisibleTypeAnnotations));

     }

     private void check(NoteKind kind, RuntimeTypeAnnotations_attribute attr) {

         if (attr == null)

             return;

         for (TypeAnnotation anno: attr.annotations) {

             Position p = anno.position;

             Note note = null;

             if (p.offset != -1)

                 addNote(p.offset, note = new Note(kind, anno));

             if (p.lvarOffset != null) {

                 for (int i = 0; i < p.lvarOffset.length; i++) {

                     if (note == null)

                         note = new Note(kind, anno);

                     addNote(p.lvarOffset[i], note);

                 }

             }

         }

     }

     private void addNote(int pc, Note note) {

         List<Note> list = pcMap.get(pc);

         if (list == null)

             pcMap.put(pc, list = new ArrayList<Note>());

         list.add(note);

     }

     @Override

     void writeDetails(Instruction instr) {

         String indent = space(2); // get from Options?

         int pc = instr.getPC();

         List<Note> notes = pcMap.get(pc);

         if (notes != null) {

             for (Note n: notes) {

                 print(indent);

                 print("@");

                 annotationWriter.write(n.anno, false, true);

                 print(", ");

                 println(StringUtils.toLowerCase(n.kind.toString()));

             }

         }

     }

     private AnnotationWriter annotationWriter;

     private ClassWriter classWriter;

     private Map<Integer, List<Note>> pcMap;

 }