blob: ea5486c6349d3f7632c999fc80ceff39b292774f (
plain)
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
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
|
/#
This Source Code Form is subject to the terms of the Mozilla Public
License, v. 2.0. If a copy of the MPL was not distributed with this
file, You can obtain one at http://mozilla.org/MPL/2.0/.
#/
# Interface for moving through a list
/; interface Iterator (type T)
# Advance to the next element in the list
/; next [bool] ;/
# Get the current element in the list
/; current [T] ;/
# Seek to the end of the iterator
# Returns true if this was successfull
/; end [bool] ;/
;/
# Interface for moving through a list forwards or backwards
/; interface DoubleIterator (type T) extends Iterator(T)
# Move to the previous element in the list
/; prev [bool] ;/
# Seek to the start of the iterator
# Returns true if this was successfull
/; start [bool] ;/
;/
# Iterate over an array
;raw struct ArrayIterator (type T) extends DoubleIterator(T) {
uint place,
~{}T data
}
/; method ArrayIterator
/; ArrayIterator (~{}T arr)
;self.place = 0
;self.data = arr
;/
/; override next [bool]
/; if (self.place + 1 >= len self.data`)
;self.place = len self.data`
;return false
;/
;self.place++
;return true
;/
/; override current [T]
;return self.data`{self.place}
;/
/; override prev [bool]
/; if (self.place == 0)
;return false
;/
;self.place--
;return true
;/
/; override end [bool]
;self.place = len self.data`
;return true
;/
/; override start [bool]
;self.place = 0
;return true
;/
;/
# Iterate over a pointer
;raw struct PointerIterator (type T) extends DoubleIterator(T) {
uint
place,
length,
~T data
}
/; method PointerIterator
/; PointerIterator (~T ptr, uint length)
;self.place = 0
;self.length = length
;self.data = ptr
;/
/; override next [bool]
/; if (self.place + 1 >= self.length)
;self.place = self.length
;return false
;/
;self.place++
;return true
;/
/; override current [T]
;return self.data{self.place}
;/
/; override prev [bool]
/; if (self.place == 0)
;return false
;/
;self.place--
;return true
;/
/; override end [bool]
;self.place = self.length
;return true
;/
/; override start [bool]
;self.place = 0
;return true
;/
;/
;struct ReverseIterator (type T) extends DoubleIterator(T) {
DoubleIterator(T) it
}
/; method ReverseIterator
/; ReverseIterator (DoubleIterator(T) it)
;self.it = it
;self.it.end()
;/
/; override next [bool]
;return self.it.prev()
;/
/; override current [T]
;return self.it.current()
;/
/; override prev [bool]
;return self.it.next()
;/
/; override end [bool]
;return self.it.start()
;/
/; override start [bool]
;return self.it.end()
;/
;/
|
