KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > soot > coffi > CONSTANT_Utf8_collector


1 /* Soot - a J*va Optimization Framework
2  * Copyright (C) 2001 Michael Pan (pan@math.tau.ac.il)
3  *
4  * This library is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Lesser General Public
6  * License as published by the Free Software Foundation; either
7  * version 2.1 of the License, or (at your option) any later version.
8  *
9  * This library is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12  * Lesser General Public License for more details.
13  *
14  * You should have received a copy of the GNU Lesser General Public
15  * License along with this library; if not, write to the
16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17  * Boston, MA 02111-1307, USA.
18  */
19
20 /*
21  * Modified by the Sable Research Group and others 2001.
22  * See the 'credits' file distributed with Soot for the complete list of
23  * contributors. (Soot is distributed at http://www.sable.mcgill.ca/soot)
24  */
25
26
27 package soot.coffi;
28 import soot.*;
29 import java.lang.*;
30 import java.util.*;
31
32 /** Provides sharing for Utf8_info string objects
33  * reused in different contexts. */
34
35 public class CONSTANT_Utf8_collector
36 {
37     public CONSTANT_Utf8_collector( Singletons.Global g ) {}
38     public static CONSTANT_Utf8_collector v() { return G.v().soot_coffi_CONSTANT_Utf8_collector(); }
39     HashMap hash = null;
40
41     synchronized CONSTANT_Utf8_info add(CONSTANT_Utf8_info _Utf8_info)
42     {
43         if (hash == null)
44         {
45             hash = new HashMap();
46         }
47
48         String JavaDoc Utf8_str_key = _Utf8_info.convert();
49         if (hash.containsKey(Utf8_str_key))
50         {
51             return (CONSTANT_Utf8_info)hash.get(Utf8_str_key);
52         }
53         hash.put(Utf8_str_key, _Utf8_info);
54         _Utf8_info.fixConversion(Utf8_str_key);
55         return _Utf8_info;
56     }
57 }
58
Popular Tags