about summary refs log tree commit diff stats
path: root/html/066stream.mu.html
blob: 564a24bc84f16e75700e3cee61390b74e73704af (plain) (blame)
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
<!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="number_lines,use_css,pre_wrap,no_foldcolumn,expand_tabs,line_ids,prevent_copy=">
<meta name="colorscheme" content="minimal">
<style type="text/css">
<!--
pre { white-space: pre-wrap; font-family: monospace; color: #aaaaaa; background-color: #080808; }
body { font-size: 12pt; font-family: monospace; color: #aaaaaa; background-color: #080808; }
a { color:#eeeeee; text-decoration: none; }
a:hover { text-decoration: underline; }
* { font-size: 12pt; font-size: 1em; }
.muRecipe { color: #ff8700; }
.muControl { color: #c0a020; }
.Conceal { color: #4e4e4e; }
.Delimiter { color: #800080; }
.Special { color: #c00000; }
.Comment { color: #9090ff; }
.Comment a { color:#0000ee; text-decoration:underline; }
.Constant { color: #00a0a0; }
.LineNr { color: #444444; }
.muData { color: #ffff00; }
-->
</style>

<script type='text/javascript'>
<!--

/* function to open any folds containing a jumped-to line before jumping to it */
function JumpToLine()
{
  var lineNum;
  lineNum = window.location.hash;
  lineNum = lineNum.substr(1); /* strip off '#' */

  if (lineNum.indexOf('L') == -1) {
    lineNum = 'L'+lineNum;
  }
  lineElem = document.getElementById(lineNum);
  /* Always jump to new location even if the line was hidden inside a fold, or
   * we corrected the raw number to a line ID.
   */
  if (lineElem) {
    lineElem.scrollIntoView(true);
  }
  return true;
}
if ('onhashchange' in window) {
  window.onhashchange = JumpToLine;
}

-->
</script>
</head>
<body onload='JumpToLine();'>
<pre id='vimCodeElement'>
<span id="L1" class="LineNr"> 1 </span><span class="Comment"># new type to help incrementally scan arrays</span>
<span id="L2" class="LineNr"> 2 </span><span class="muData">container</span> <a href='066stream.mu.html#L2'>stream</a>:_elem [
<span id="L3" class="LineNr"> 3 </span>  index:num
<span id="L4" class="LineNr"> 4 </span>  data:&amp;:@:_elem
<span id="L5" class="LineNr"> 5 </span>]
<span id="L6" class="LineNr"> 6 </span>
<span id="L7" class="LineNr"> 7 </span><span class="muRecipe">def</span> <a href='066stream.mu.html#L7'>new-stream</a> s:&amp;:@:_elem<span class="muRecipe"> -&gt; </span>result:&amp;:<a href='066stream.mu.html#L2'>stream</a>:_elem [
<span id="L8" class="LineNr"> 8 </span>  <span class="Constant">local-scope</span>
<span id="L9" class="LineNr"> 9 </span>  <span class="Constant">load-ingredients</span>
<span id="L10" class="LineNr">10 </span>  <span class="muControl">return-unless</span> s, <span class="Constant">0/null</span>
<span id="L11" class="LineNr">11 </span>  result <span class="Special">&lt;-</span> new <span class="Delimiter">{</span>(stream _elem): type<span class="Delimiter">}</span>
<span id="L12" class="LineNr">12 </span>  *result <span class="Special">&lt;-</span> put *result, <span class="Constant">index:offset</span>,<span class="Constant"> 0</span>
<span id="L13" class="LineNr">13 </span>  *result <span class="Special">&lt;-</span> put *result, <span class="Constant">data:offset</span>, s
<span id="L14" class="LineNr">14 </span>]
<span id="L15" class="LineNr">15 </span>
<span id="L16" class="LineNr">16 </span><span class="muRecipe">def</span> <a href='066stream.mu.html#L16'>rewind</a> in:&amp;:<a href='066stream.mu.html#L2'>stream</a>:_elem<span class="muRecipe"> -&gt; </span>in:&amp;:<a href='066stream.mu.html#L2'>stream</a>:_elem [
<span id="L17" class="LineNr">17 </span>  <span class="Constant">local-scope</span>
<span id="L18" class="LineNr">18 </span>  <span class="Constant">load-ingredients</span>
<span id="L19" class="LineNr">19 </span>  <span class="muControl">return-unless</span> in
<span id="L20" class="LineNr">20 </span>  *in <span class="Special">&lt;-</span> put *in, <span class="Constant">index:offset</span>,<span class="Constant"> 0</span>
<span id="L21" class="LineNr">21 </span>]
<span id="L22" class="LineNr">22 </span>
<span id="L23" class="LineNr">23 </span><span class="muRecipe">def</span> read in:&amp;:<a href='066stream.mu.html#L2'>stream</a>:_elem<span class="muRecipe"> -&gt; </span>result:_elem, empty?:bool, in:&amp;:<a href='066stream.mu.html#L2'>stream</a>:_elem [
<span id="L24" class="LineNr">24 </span>  <span class="Constant">local-scope</span>
<span id="L25" class="LineNr">25 </span>  <span class="Constant">load-ingredients</span>
<span id="L26" class="LineNr">26 </span>  assert in, <span class="Constant">[cannot read; <a href='066stream.mu.html#L2'>stream</a> has no data]</span>
<span id="L27" class="LineNr">27 </span>  empty? <span class="Special">&lt;-</span> copy <span class="Constant">0/false</span>
<span id="L28" class="LineNr">28 </span>  idx:num <span class="Special">&lt;-</span> get *in, <span class="Constant">index:offset</span>
<span id="L29" class="LineNr">29 </span>  s:&amp;:@:_elem <span class="Special">&lt;-</span> get *in, <span class="Constant">data:offset</span>
<span id="L30" class="LineNr">30 </span>  len:num <span class="Special">&lt;-</span> length *s
<span id="L31" class="LineNr">31 </span>  at-end?:bool <span class="Special">&lt;-</span> greater-or-equal idx len
<span id="L32" class="LineNr">32 </span>  <span class="Delimiter">{</span>
<span id="L33" class="LineNr">33 </span>  <span class="Conceal">¦</span> <span class="muControl">break-unless</span> at-end?
<span id="L34" class="LineNr">34 </span>  <span class="Conceal">¦</span> empty-result:&amp;:_elem <span class="Special">&lt;-</span> new <span class="Constant">_elem:type</span>
<span id="L35" class="LineNr">35 </span>  <span class="Conceal">¦</span> <span class="muControl">return</span> *empty-result, <span class="Constant">1/true</span>
<span id="L36" class="LineNr">36 </span>  <span class="Delimiter">}</span>
<span id="L37" class="LineNr">37 </span>  result <span class="Special">&lt;-</span> index *s, idx
<span id="L38" class="LineNr">38 </span>  idx <span class="Special">&lt;-</span> add idx,<span class="Constant"> 1</span>
<span id="L39" class="LineNr">39 </span>  *in <span class="Special">&lt;-</span> put *in, <span class="Constant">index:offset</span>, idx
<span id="L40" class="LineNr">40 </span>]
<span id="L41" class="LineNr">41 </span>
<span id="L42" class="LineNr">42 </span><span class="muRecipe">def</span> <a href='066stream.mu.html#L42'>peek</a> in:&amp;:<a href='066stream.mu.html#L2'>stream</a>:_elem<span class="muRecipe"> -&gt; </span>result:_elem, empty?:bool [
<span id="L43" class="LineNr">43 </span>  <span class="Constant">local-scope</span>
<span id="L44" class="LineNr">44 </span>  <span class="Constant">load-ingredients</span>
<span id="L45" class="LineNr">45 </span>  assert in, <span class="Constant">[cannot peek; <a href='066stream.mu.html#L2'>stream</a> has no data]</span>
<span id="L46" class="LineNr">46 </span>  empty?:bool <span class="Special">&lt;-</span> copy <span class="Constant">0/false</span>
<span id="L47" class="LineNr">47 </span>  idx:num <span class="Special">&lt;-</span> get *in, <span class="Constant">index:offset</span>
<span id="L48" class="LineNr">48 </span>  s:&amp;:@:_elem <span class="Special">&lt;-</span> get *in, <span class="Constant">data:offset</span>
<span id="L49" class="LineNr">49 </span>  len:num <span class="Special">&lt;-</span> length *s
<span id="L50" class="LineNr">50 </span>  at-end?:bool <span class="Special">&lt;-</span> greater-or-equal idx len
<span id="L51" class="LineNr">51 </span>  <span class="Delimiter">{</span>
<span id="L52" class="LineNr">52 </span>  <span class="Conceal">¦</span> <span class="muControl">break-unless</span> at-end?
<span id="L53" class="LineNr">53 </span>  <span class="Conceal">¦</span> empty-result:&amp;:_elem <span class="Special">&lt;-</span> new <span class="Constant">_elem:type</span>
<span id="L54" class="LineNr">54 </span>  <span class="Conceal">¦</span> <span class="muControl">return</span> *empty-result, <span class="Constant">1/true</span>
<span id="L55" class="LineNr">55 </span>  <span class="Delimiter">}</span>
<span id="L56" class="LineNr">56 </span>  result <span class="Special">&lt;-</span> index *s, idx
<span id="L57" class="LineNr">57 </span>]
<span id="L58" class="LineNr">58 </span>
<span id="L59" class="LineNr">59 </span><span class="muRecipe">def</span> <a href='066stream.mu.html#L59'>read-line</a> in:&amp;:<a href='066stream.mu.html#L2'>stream</a>:char<span class="muRecipe"> -&gt; </span>result:text, in:&amp;:<a href='066stream.mu.html#L2'>stream</a>:char [
<span id="L60" class="LineNr">60 </span>  <span class="Constant">local-scope</span>
<span id="L61" class="LineNr">61 </span>  <span class="Constant">load-ingredients</span>
<span id="L62" class="LineNr">62 </span>  assert in, <span class="Constant">[cannot read-line; <a href='066stream.mu.html#L2'>stream</a> has no data]</span>
<span id="L63" class="LineNr">63 </span>  idx:num <span class="Special">&lt;-</span> get *in, <span class="Constant">index:offset</span>
<span id="L64" class="LineNr">64 </span>  s:text <span class="Special">&lt;-</span> get *in, <span class="Constant">data:offset</span>
<span id="L65" class="LineNr">65 </span>  next-idx:num <span class="Special">&lt;-</span> find-next s, <span class="Constant">10/newline</span>, idx
<span id="L66" class="LineNr">66 </span>  result <span class="Special">&lt;-</span> <a href='061text.mu.html#L1294'>copy-range</a> s, idx, next-idx
<span id="L67" class="LineNr">67 </span>  idx <span class="Special">&lt;-</span> add next-idx,<span class="Constant"> 1</span>  <span class="Comment"># skip newline</span>
<span id="L68" class="LineNr">68 </span>  <span class="Comment"># write back</span>
<span id="L69" class="LineNr">69 </span>  *in <span class="Special">&lt;-</span> put *in, <span class="Constant">index:offset</span>, idx
<span id="L70" class="LineNr">70 </span>]
<span id="L71" class="LineNr">71 </span>
<span id="L72" class="LineNr">72 </span><span class="muRecipe">def</span> <a href='066stream.mu.html#L72'>end-of-stream?</a> in:&amp;:<a href='066stream.mu.html#L2'>stream</a>:_elem<span class="muRecipe"> -&gt; </span>result:bool [
<span id="L73" class="LineNr">73 </span>  <span class="Constant">local-scope</span>
<span id="L74" class="LineNr">74 </span>  <span class="Constant">load-ingredients</span>
<span id="L75" class="LineNr">75 </span>  assert in, <span class="Constant">[cannot check end-of-stream?; <a href='066stream.mu.html#L2'>stream</a> has no data]</span>
<span id="L76" class="LineNr">76 </span>  idx:num <span class="Special">&lt;-</span> get *in, <span class="Constant">index:offset</span>
<span id="L77" class="LineNr">77 </span>  s:&amp;:@:_elem <span class="Special">&lt;-</span> get *in, <span class="Constant">data:offset</span>
<span id="L78" class="LineNr">78 </span>  len:num <span class="Special">&lt;-</span> length *s
<span id="L79" class="LineNr">79 </span>  result <span class="Special">&lt;-</span> greater-or-equal idx, len
<span id="L80" class="LineNr">80 </span>]
</pre>
</body>
</html>
<!-- vim: set foldmethod=manual : -->