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
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
|
<!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 - 070table.mu</title>
<meta name="Generator" content="Vim/8.0">
<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; }
.muControl { color: #c0a020; }
.muRecipe { color: #ff8700; }
.muScenario { color: #00af00; }
.LineNr { color: #444444; }
.muData { color: #ffff00; }
.Delimiter { color: #800080; }
.Constant { color: #00a0a0; }
.Special { color: #c00000; }
.Comment { color: #9090ff; }
.Comment a { color:#0000ee; text-decoration:underline; }
-->
</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"># A table is like an array, except that you can index it with arbitrary types</span>
<span id="L2" class="LineNr"> 2 </span><span class="Comment"># and not just non-negative whole numbers.</span>
<span id="L3" class="LineNr"> 3 </span>
<span id="L4" class="LineNr"> 4 </span><span class="Comment"># incomplete; doesn't handle hash conflicts</span>
<span id="L5" class="LineNr"> 5 </span>
<span id="L6" class="LineNr"> 6 </span><span class="muScenario">scenario</span> table-read-write [
<span id="L7" class="LineNr"> 7 </span> <span class="Constant">local-scope</span>
<span id="L8" class="LineNr"> 8 </span> tab:&:<a href='070table.mu.html#L44'>table</a>:num:num <span class="Special"><-</span> <a href='070table.mu.html#L56'>new-table</a><span class="Constant"> 30</span>
<span id="L9" class="LineNr"> 9 </span> run [
<span id="L10" class="LineNr"> 10 </span> put-index tab,<span class="Constant"> 12</span>,<span class="Constant"> 34</span>
<span id="L11" class="LineNr"> 11 </span> 60:num/<span class="Special">raw</span>, 61:bool/<span class="Special">raw</span> <span class="Special"><-</span> index tab,<span class="Constant"> 12</span>
<span id="L12" class="LineNr"> 12 </span> ]
<span id="L13" class="LineNr"> 13 </span> memory-should-contain [
<span id="L14" class="LineNr"> 14 </span> <span class="Constant"> 60</span> <span class="Special"><-</span><span class="Constant"> 34</span>
<span id="L15" class="LineNr"> 15 </span> <span class="Constant"> 61</span> <span class="Special"><-</span><span class="Constant"> 1</span> <span class="Comment"># found</span>
<span id="L16" class="LineNr"> 16 </span> ]
<span id="L17" class="LineNr"> 17 </span>]
<span id="L18" class="LineNr"> 18 </span>
<span id="L19" class="LineNr"> 19 </span><span class="muScenario">scenario</span> table-read-write-non-integer [
<span id="L20" class="LineNr"> 20 </span> <span class="Constant">local-scope</span>
<span id="L21" class="LineNr"> 21 </span> tab:&:<a href='070table.mu.html#L44'>table</a>:text:num <span class="Special"><-</span> <a href='070table.mu.html#L56'>new-table</a><span class="Constant"> 30</span>
<span id="L22" class="LineNr"> 22 </span> run [
<span id="L23" class="LineNr"> 23 </span> put-index tab, <span class="Constant">[abc def]</span>,<span class="Constant"> 34</span>
<span id="L24" class="LineNr"> 24 </span> 1:num/<span class="Special">raw</span>, 2:bool/<span class="Special">raw</span> <span class="Special"><-</span> index tab, <span class="Constant">[abc def]</span>
<span id="L25" class="LineNr"> 25 </span> ]
<span id="L26" class="LineNr"> 26 </span> memory-should-contain [
<span id="L27" class="LineNr"> 27 </span> <span class="Constant"> 1</span> <span class="Special"><-</span><span class="Constant"> 34</span>
<span id="L28" class="LineNr"> 28 </span> <span class="Constant"> 2</span> <span class="Special"><-</span><span class="Constant"> 1</span> <span class="Comment"># found</span>
<span id="L29" class="LineNr"> 29 </span> ]
<span id="L30" class="LineNr"> 30 </span>]
<span id="L31" class="LineNr"> 31 </span>
<span id="L32" class="LineNr"> 32 </span><span class="muScenario">scenario</span> table-read-not-found [
<span id="L33" class="LineNr"> 33 </span> <span class="Constant">local-scope</span>
<span id="L34" class="LineNr"> 34 </span> tab:&:<a href='070table.mu.html#L44'>table</a>:text:num <span class="Special"><-</span> <a href='070table.mu.html#L56'>new-table</a><span class="Constant"> 30</span>
<span id="L35" class="LineNr"> 35 </span> run [
<span id="L36" class="LineNr"> 36 </span> 1:num/<span class="Special">raw</span>, 2:bool/<span class="Special">raw</span> <span class="Special"><-</span> index tab, <span class="Constant">[abc def]</span>
<span id="L37" class="LineNr"> 37 </span> ]
<span id="L38" class="LineNr"> 38 </span> memory-should-contain [
<span id="L39" class="LineNr"> 39 </span> <span class="Constant"> 1</span> <span class="Special"><-</span><span class="Constant"> 0</span>
<span id="L40" class="LineNr"> 40 </span> <span class="Constant"> 2</span> <span class="Special"><-</span><span class="Constant"> 0</span> <span class="Comment"># not found</span>
<span id="L41" class="LineNr"> 41 </span> ]
<span id="L42" class="LineNr"> 42 </span>]
<span id="L43" class="LineNr"> 43 </span>
<span id="L44" class="LineNr"> 44 </span><span class="muData">container</span> <a href='070table.mu.html#L44'>table</a>:_key:_value [
<span id="L45" class="LineNr"> 45 </span> length:num
<span id="L46" class="LineNr"> 46 </span> <a href='075channel.mu.html#L391'>capacity</a>:num
<span id="L47" class="LineNr"> 47 </span> data:&:@:<a href='070table.mu.html#L50'>table-row</a>:_key:_value
<span id="L48" class="LineNr"> 48 </span>]
<span id="L49" class="LineNr"> 49 </span>
<span id="L50" class="LineNr"> 50 </span><span class="muData">container</span> <a href='070table.mu.html#L50'>table-row</a>:_key:_value [
<span id="L51" class="LineNr"> 51 </span> occupied?:bool
<span id="L52" class="LineNr"> 52 </span> key:_key
<span id="L53" class="LineNr"> 53 </span> value:_value
<span id="L54" class="LineNr"> 54 </span>]
<span id="L55" class="LineNr"> 55 </span>
<span id="L56" class="LineNr"> 56 </span><span class="muRecipe">def</span> <a href='070table.mu.html#L56'>new-table</a> <a href='075channel.mu.html#L391'>capacity</a>:num<span class="muRecipe"> -> </span>result:&:<a href='070table.mu.html#L44'>table</a>:_key:_value [
<span id="L57" class="LineNr"> 57 </span> <span class="Constant">local-scope</span>
<span id="L58" class="LineNr"> 58 </span> <span class="Constant">load-inputs</span>
<span id="L59" class="LineNr"> 59 </span> result <span class="Special"><-</span> new <span class="Delimiter">{</span>(table _key _value): type<span class="Delimiter">}</span>
<span id="L60" class="LineNr"> 60 </span> data:&:@:<a href='070table.mu.html#L50'>table-row</a>:_key:_value <span class="Special"><-</span> new <span class="Delimiter">{</span>(table-row _key _value): type<span class="Delimiter">}</span>, <a href='075channel.mu.html#L391'>capacity</a>
<span id="L61" class="LineNr"> 61 </span> *result <span class="Special"><-</span> merge <span class="Constant">0/length</span>, <a href='075channel.mu.html#L391'>capacity</a>, data
<span id="L62" class="LineNr"> 62 </span>]
<span id="L63" class="LineNr"> 63 </span>
<span id="L64" class="LineNr"> 64 </span><span class="Comment"># todo: tag results as /required so that call-sites are forbidden from ignoring them</span>
<span id="L65" class="LineNr"> 65 </span><span class="Comment"># then we could handle conflicts simply by resizing the table</span>
<span id="L66" class="LineNr"> 66 </span><span class="muRecipe">def</span> put-index <a href='070table.mu.html#L44'>table</a>:&:<a href='070table.mu.html#L44'>table</a>:_key:_value, key:_key, value:_value<span class="muRecipe"> -> </span><a href='070table.mu.html#L44'>table</a>:&:<a href='070table.mu.html#L44'>table</a>:_key:_value [
<span id="L67" class="LineNr"> 67 </span> <span class="Constant">local-scope</span>
<span id="L68" class="LineNr"> 68 </span> <span class="Constant">load-inputs</span>
<span id="L69" class="LineNr"> 69 </span> hash:num <span class="Special"><-</span> hash key
<span id="L70" class="LineNr"> 70 </span> hash <span class="Special"><-</span> <a href='070table.mu.html#L103'>abs</a> hash
<span id="L71" class="LineNr"> 71 </span> <a href='075channel.mu.html#L391'>capacity</a>:num <span class="Special"><-</span> get *table, <span class="Constant"><a href='075channel.mu.html#L391'>capacity</a>:offset</span>
<span id="L72" class="LineNr"> 72 </span> _, hash-key:num <span class="Special"><-</span> divide-with-remainder hash, <a href='075channel.mu.html#L391'>capacity</a>
<span id="L73" class="LineNr"> 73 </span> hash-key <span class="Special"><-</span> <a href='070table.mu.html#L103'>abs</a> hash-key <span class="Comment"># in case hash overflows from a double into a negative integer inside 'divide-with-remainder' above</span>
<span id="L74" class="LineNr"> 74 </span> table-data:&:@:<a href='070table.mu.html#L50'>table-row</a>:_key:_value <span class="Special"><-</span> get *table, <span class="Constant">data:offset</span>
<span id="L75" class="LineNr"> 75 </span> x:<a href='070table.mu.html#L50'>table-row</a>:_key:_value <span class="Special"><-</span> index *table-data, hash-key
<span id="L76" class="LineNr"> 76 </span> occupied?:bool <span class="Special"><-</span> get x, <span class="Constant">occupied?:offset</span>
<span id="L77" class="LineNr"> 77 </span> not-occupied?:bool <span class="Special"><-</span> not occupied?:bool
<span id="L78" class="LineNr"> 78 </span> assert not-occupied?, <span class="Constant">[can't handle collisions yet]</span>
<span id="L79" class="LineNr"> 79 </span> new-row:<a href='070table.mu.html#L50'>table-row</a>:_key:_value <span class="Special"><-</span> merge<span class="Constant"> true</span>, key, value
<span id="L80" class="LineNr"> 80 </span> *table-data <span class="Special"><-</span> put-index *table-data, hash-key, new-row
<span id="L81" class="LineNr"> 81 </span>]
<span id="L82" class="LineNr"> 82 </span>
<span id="L83" class="LineNr"> 83 </span><span class="muRecipe">def</span> index <a href='070table.mu.html#L44'>table</a>:&:<a href='070table.mu.html#L44'>table</a>:_key:_value, key:_key<span class="muRecipe"> -> </span>result:_value, found?:bool [
<span id="L84" class="LineNr"> 84 </span> <span class="Constant">local-scope</span>
<span id="L85" class="LineNr"> 85 </span> <span class="Constant">load-inputs</span>
<span id="L86" class="LineNr"> 86 </span> hash:num <span class="Special"><-</span> hash key
<span id="L87" class="LineNr"> 87 </span> hash <span class="Special"><-</span> <a href='070table.mu.html#L103'>abs</a> hash
<span id="L88" class="LineNr"> 88 </span> <a href='075channel.mu.html#L391'>capacity</a>:num <span class="Special"><-</span> get *table, <span class="Constant"><a href='075channel.mu.html#L391'>capacity</a>:offset</span>
<span id="L89" class="LineNr"> 89 </span> _, hash-key:num <span class="Special"><-</span> divide-with-remainder hash, <a href='075channel.mu.html#L391'>capacity</a>
<span id="L90" class="LineNr"> 90 </span> hash-key <span class="Special"><-</span> <a href='070table.mu.html#L103'>abs</a> hash-key <span class="Comment"># in case hash overflows from a double into a negative integer inside 'divide-with-remainder' above</span>
<span id="L91" class="LineNr"> 91 </span> table-data:&:@:<a href='070table.mu.html#L50'>table-row</a>:_key:_value <span class="Special"><-</span> get *table, <span class="Constant">data:offset</span>
<span id="L92" class="LineNr"> 92 </span> x:<a href='070table.mu.html#L50'>table-row</a>:_key:_value <span class="Special"><-</span> index *table-data, hash-key
<span id="L93" class="LineNr"> 93 </span> empty:&:_value <span class="Special"><-</span> new <span class="Constant">_value:type</span>
<span id="L94" class="LineNr"> 94 </span> result <span class="Special"><-</span> copy *empty
<span id="L95" class="LineNr"> 95 </span> found?:bool <span class="Special"><-</span> get x, <span class="Constant">occupied?:offset</span>
<span id="L96" class="LineNr"> 96 </span> <span class="muControl">return-unless</span> found?
<span id="L97" class="LineNr"> 97 </span> key2:_key <span class="Special"><-</span> get x, <span class="Constant">key:offset</span>
<span id="L98" class="LineNr"> 98 </span> found?:bool <span class="Special"><-</span> equal key, key2
<span id="L99" class="LineNr"> 99 </span> <span class="muControl">return-unless</span> found?
<span id="L100" class="LineNr">100 </span> result <span class="Special"><-</span> get x, <span class="Constant">value:offset</span>
<span id="L101" class="LineNr">101 </span>]
<span id="L102" class="LineNr">102 </span>
<span id="L103" class="LineNr">103 </span><span class="muRecipe">def</span> <a href='070table.mu.html#L103'>abs</a> n:num<span class="muRecipe"> -> </span>result:num [
<span id="L104" class="LineNr">104 </span> <span class="Constant">local-scope</span>
<span id="L105" class="LineNr">105 </span> <span class="Constant">load-inputs</span>
<span id="L106" class="LineNr">106 </span> positive?:bool <span class="Special"><-</span> greater-or-equal n,<span class="Constant"> 0</span>
<span id="L107" class="LineNr">107 </span> <span class="muControl">return-if</span> positive?, n
<span id="L108" class="LineNr">108 </span> result <span class="Special"><-</span> multiply n,<span class="Constant"> -1</span>
<span id="L109" class="LineNr">109 </span>]
</pre>
</body>
</html>
<!-- vim: set foldmethod=manual : -->
|