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
|
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<title>Mu - 066stream.mu</title>
<meta name="Generator" content="Vim/7.4">
<meta name="plugin-version" content="vim7.4_v2">
<meta name="syntax" content="none">
<meta name="settings" content="use_css,pre_wrap,no_foldcolumn,expand_tabs,prevent_copy=">
<meta name="colorscheme" content="minimal">
<style type="text/css">
<!--
pre { white-space: pre-wrap; font-family: monospace; color: #eeeeee; background-color: #080808; }
body { font-size: 12pt; font-family: monospace; color: #eeeeee; background-color: #080808; }
* { font-size: 12pt; font-size: 1em; }
.muRecipe { color: #ff8700; }
.muData { color: #ffff00; }
.Delimiter { color: #800080; }
.Comment { color: #9090ff; }
.Constant { color: #00a0a0; }
.Special { color: #c00000; }
.muControl { color: #c0a020; }
-->
</style>
<script type='text/javascript'>
<!--
-->
</script>
</head>
<body>
<pre id='vimCodeElement'>
<span class="Comment"># new type to help incrementally scan arrays</span>
<span class="muData">container</span> stream:_elem [
index:num
data:&:@:_elem
]
<span class="muRecipe">def</span> new-stream s:&:@:_elem<span class="muRecipe"> -> </span>result:&:stream:_elem [
<span class="Constant">local-scope</span>
<span class="Constant">load-ingredients</span>
result<span class="Special"> <- </span>new <span class="Delimiter">{</span>(stream _elem): type<span class="Delimiter">}</span>
*result<span class="Special"> <- </span>put *result, <span class="Constant">index:offset</span>, <span class="Constant">0</span>
*result<span class="Special"> <- </span>put *result, <span class="Constant">data:offset</span>, s
]
<span class="muRecipe">def</span> rewind in:&:stream:_elem<span class="muRecipe"> -> </span>in:&:stream:_elem [
<span class="Constant">local-scope</span>
<span class="Constant">load-ingredients</span>
*in<span class="Special"> <- </span>put *in, <span class="Constant">index:offset</span>, <span class="Constant">0</span>
]
<span class="muRecipe">def</span> read in:&:stream:_elem<span class="muRecipe"> -> </span>result:_elem, empty?:bool, in:&:stream:_elem [
<span class="Constant">local-scope</span>
<span class="Constant">load-ingredients</span>
empty?<span class="Special"> <- </span>copy <span class="Constant">0/false</span>
idx:num<span class="Special"> <- </span>get *in, <span class="Constant">index:offset</span>
s:&:@:_elem<span class="Special"> <- </span>get *in, <span class="Constant">data:offset</span>
len:num<span class="Special"> <- </span>length *s
at-end?:bool<span class="Special"> <- </span>greater-or-equal idx len
<span class="Delimiter">{</span>
<span class="muControl">break-unless</span> at-end?
empty-result:&:_elem<span class="Special"> <- </span>new <span class="Constant">_elem:type</span>
<span class="muControl">return</span> *empty-result, <span class="Constant">1/true</span>
<span class="Delimiter">}</span>
result<span class="Special"> <- </span>index *s, idx
idx<span class="Special"> <- </span>add idx, <span class="Constant">1</span>
*in<span class="Special"> <- </span>put *in, <span class="Constant">index:offset</span>, idx
]
<span class="muRecipe">def</span> peek in:&:stream:_elem<span class="muRecipe"> -> </span>result:_elem, empty?:bool [
<span class="Constant">local-scope</span>
<span class="Constant">load-ingredients</span>
empty?:bool<span class="Special"> <- </span>copy <span class="Constant">0/false</span>
idx:num<span class="Special"> <- </span>get *in, <span class="Constant">index:offset</span>
s:&:@:_elem<span class="Special"> <- </span>get *in, <span class="Constant">data:offset</span>
len:num<span class="Special"> <- </span>length *s
at-end?:bool<span class="Special"> <- </span>greater-or-equal idx len
<span class="Delimiter">{</span>
<span class="muControl">break-unless</span> at-end?
empty-result:&:_elem<span class="Special"> <- </span>new <span class="Constant">_elem:type</span>
<span class="muControl">return</span> *empty-result, <span class="Constant">1/true</span>
<span class="Delimiter">}</span>
result<span class="Special"> <- </span>index *s, idx
]
<span class="muRecipe">def</span> read-line in:&:stream:char<span class="muRecipe"> -> </span>result:text, in:&:stream:char [
<span class="Constant">local-scope</span>
<span class="Constant">load-ingredients</span>
idx:num<span class="Special"> <- </span>get *in, <span class="Constant">index:offset</span>
s:text<span class="Special"> <- </span>get *in, <span class="Constant">data:offset</span>
next-idx:num<span class="Special"> <- </span>find-next s, <span class="Constant">10/newline</span>, idx
result<span class="Special"> <- </span>copy-range s, idx, next-idx
idx<span class="Special"> <- </span>add next-idx, <span class="Constant">1</span> <span class="Comment"># skip newline</span>
<span class="Comment"># write back</span>
*in<span class="Special"> <- </span>put *in, <span class="Constant">index:offset</span>, idx
]
<span class="muRecipe">def</span> end-of-stream? in:&:stream:_elem<span class="muRecipe"> -> </span>result:bool [
<span class="Constant">local-scope</span>
<span class="Constant">load-ingredients</span>
idx:num<span class="Special"> <- </span>get *in, <span class="Constant">index:offset</span>
s:&:@:_elem<span class="Special"> <- </span>get *in, <span class="Constant">data:offset</span>
len:num<span class="Special"> <- </span>length *s
result<span class="Special"> <- </span>greater-or-equal idx, len
]
</pre>
</body>
</html>
<!-- vim: set foldmethod=manual : -->
|