modules/up/src/gnug++/CacheKey.CacheValue.Map.h
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FUNCTIONS
This source file includes following functions.
- CacheKeyCacheValueMap
- CacheKeyCacheValueMap
- length
- empty
- dflt
- CacheKeyCacheValueMap
1 // This may look like C code, but it is really -*- C++ -*-
2 /*
3 Copyright (C) 1988 Free Software Foundation
4 written by Doug Lea (dl@rocky.oswego.edu)
5
6 This file is part of the GNU C++ Library. This library is free
7 software; you can redistribute it and/or modify it under the terms of
8 the GNU Library General Public License as published by the Free
9 Software Foundation; either version 2 of the License, or (at your
10 option) any later version. This library is distributed in the hope
11 that it will be useful, but WITHOUT ANY WARRANTY; without even the
12 implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
13 PURPOSE. See the GNU Library General Public License for more details.
14 You should have received a copy of the GNU Library General Public
15 License along with this library; if not, write to the Free Software
16 Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
17 */
18
19
20 #ifndef _CacheKeyCacheValueMap_h
21 #ifdef __GNUG__
22 #pragma interface
23 #endif
24 #define _CacheKeyCacheValueMap_h 1
25
26 #include "Pix.h"
27 #include "CacheKey.defs.h"
28
29 class CacheKeyCacheValueMap
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30 {
31 protected:
32 int count;
33 CacheValue def;
34
35 public:
36 CacheKeyCacheValueMap(CacheValue& dflt);
37 inline virtual ~CacheKeyCacheValueMap();
38
39 int length() const; // current number of items
40 int empty() const;
41
42 virtual int contains(CacheKey key); // is key mapped?
43
44 virtual void clear(); // delete all items
45
46 virtual CacheValue& operator [] (CacheKey key) = 0; // access contents by key
47
48 virtual void del(CacheKey key) = 0; // delete entry
49
50 virtual Pix first() = 0; // Pix of first item or 0
51 virtual void next(Pix& i) = 0; // advance to next or 0
52 virtual CacheKey& key(Pix i) = 0; // access key at i
53 virtual CacheValue& contents(Pix i) = 0; // access contents at i
54
55 virtual int owns(Pix i); // is i a valid Pix ?
56 virtual Pix seek(CacheKey key); // Pix of key
57
58 CacheValue& dflt(); // access default val
59
60 void error(const char* msg);
61 virtual int OK() = 0; // rep invariant
62 };
63
64
65 inline CacheKeyCacheValueMap::~CacheKeyCacheValueMap() {}
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66
67 inline int CacheKeyCacheValueMap::length() const
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68 {
69 return count;
70 }
71
72 inline int CacheKeyCacheValueMap::empty() const
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73 {
74 return count == 0;
75 }
76
77 inline CacheValue& CacheKeyCacheValueMap::dflt()
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78 {
79 return def;
80 }
81
82 inline CacheKeyCacheValueMap::CacheKeyCacheValueMap(CacheValue& dflt) :def(dflt)
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83 {
84 count = 0;
85 }
86
87 #endif