1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
|
/* ScummVM - Scumm Interpreter
* Copyright (C) 2002 The ScummVM project
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program 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 for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* $Header$
*/
#ifndef COMMON_LIST_H
#define COMMON_LIST_H
#include "scummsys.h"
#include <assert.h>
namespace ScummVM {
template <class T>
class List {
protected:
int _capacity;
int _size;
T *_data;
public:
List<T>() : _capacity(0), _size(0), _data(0) {}
List<T>(const List<T>& list) : _capacity(0), _size(0), _data(0)
{
_size = list._size;
_capacity = _size + 32;
_data = new T[_capacity];
for (int i = 0; i < _size; i++)
_data[i] = list._data[i];
}
~List<T>()
{
if (_data)
delete [] _data;
}
void push_back(const T& element)
{
ensureCapacity(_size + 1);
_data[_size++] = element;
}
void insert_at(int idx, const T& element)
{
assert(idx >= 0 && idx <= _size);
ensureCapacity(_size + 1);
// The following loop is not efficient if you can just memcpy things around.
// e.g. if you have a list of ints. But for real objects (String...), memcpy
// is *not* usually a good idea!
for (int i = _size; i > idx; i--) {
_data[i] = _data[i-1];
}
_data[idx] = element;
_size++;
}
// TODO: insert, remove, ...
T& operator [](int idx)
{
assert(idx >= 0 && idx < _size);
return _data[idx];
}
const T& operator [](int idx) const
{
assert(idx >= 0 && idx < _size);
return _data[idx];
}
List<T>& operator =(const List<T>& list)
{
if (_data)
delete [] _data;
_size = list._size;
_capacity = _size + 32;
_data = new T[_capacity];
for (int i = 0; i < _size; i++)
_data[i] = list._data[i];
return *this;
}
int size() const { return _size; }
void clear()
{
if (_data) {
delete [] _data;
_data = 0;
}
_size = 0;
_capacity = 0;
}
bool isEmpty() const { return (_size == 0); }
protected:
void ensureCapacity(int new_len)
{
if (new_len <= _capacity)
return;
T *old_data = _data;
_capacity = new_len + 32;
_data = new T[_capacity];
if (old_data) {
// Copy old data
for (int i = 0; i < _size; i++)
_data[i] = old_data[i];
delete [] old_data;
}
}
};
}; // End of namespace ScummVM
#endif
|
