jdk8-mips64-public/langtools: src/share/classes/com/sun/tools/classfile/Attributes.java@bc456436c613

8008077: update reference impl for type-annotations
Reviewed-by: jjg
Contributed-by: wmdietl@cs.washington.edu

     1 /*

     2  * Copyright (c) 2007, 2008, 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  */

    26 package com.sun.tools.classfile;

    28 import java.io.IOException;

    29 import java.util.Arrays;

    30 import java.util.HashMap;

    31 import java.util.Iterator;

    32 import java.util.Map;

    34 /*

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

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

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

    38  *  deletion without notice.</b>

    39  */

    40 public class Attributes implements Iterable<Attribute> {

    41     Attributes(ClassReader cr) throws IOException {

    42         map = new HashMap<String,Attribute>();

    43         int attrs_count = cr.readUnsignedShort();

    44         attrs = new Attribute[attrs_count];

    45         for (int i = 0; i < attrs_count; i++) {

    46             Attribute attr = Attribute.read(cr);

    47             attrs[i] = attr;

    48             try {

    49                 map.put(attr.getName(cr.getConstantPool()), attr);

    50             } catch (ConstantPoolException e) {

    51                 // don't enter invalid names in map

    52             }

    53         }

    54     }

    56     public Attributes(ConstantPool constant_pool, Attribute[] attrs) {

    57         this.attrs = attrs;

    58         map = new HashMap<String,Attribute>();

    59         for (int i = 0; i < attrs.length; i++) {

    60             Attribute attr = attrs[i];

    61             try {

    62                 map.put(attr.getName(constant_pool), attr);

    63             } catch (ConstantPoolException e) {

    64                 // don't enter invalid names in map

    65             }

    66         }

    67     }

    69     public Iterator<Attribute> iterator() {

    70         return Arrays.asList(attrs).iterator();

    71     }

    73     public Attribute get(int index) {

    74         return attrs[index];

    75     }

    77     public Attribute get(String name) {

    78         return map.get(name);

    79     }

    81     public int getIndex(ConstantPool constant_pool, String name) {

    82         for (int i = 0; i < attrs.length; i++) {

    83             Attribute attr = attrs[i];

    84             try {

    85                 if (attr != null && attr.getName(constant_pool).equals(name))

    86                     return i;

    87             } catch (ConstantPoolException e) {

    88                 // ignore invalid entries

    89             }

    90         }

    91         return -1;

    92     }

    94     public int size() {

    95         return attrs.length;

    96     }

    98     public int byteLength() {

    99         int length = 2;

   100         for (Attribute a: attrs)

   101             length += a.byteLength();

   102         return length;

   103     }

   105     public final Attribute[] attrs;

   106     public final Map<String, Attribute> map;

   107 }

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