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
|
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Mu - apps/ex7.mu</title>
<meta name="Generator" content="Vim/8.2">
<meta name="plugin-version" content="vim8.1_v2">
<meta name="syntax" content="none">
<meta name="settings" content="number_lines,use_css,pre_wrap,no_foldcolumn,expand_tabs,line_ids,prevent_copy=,use_input_for_pc=fallback">
<meta name="colorscheme" content="minimal-light">
<style>
<!--
pre { white-space: pre-wrap; font-family: monospace; color: #000000; background-color: #ffffd7; }
body { font-size:12pt; font-family: monospace; color: #000000; background-color: #ffffd7; }
a { color:inherit; }
* { font-size:12pt; font-size: 1em; }
.PreProc { color: #c000c0; }
.LineNr { }
.Constant { color: #008787; }
.muFunction { color: #af5f00; text-decoration: underline; }
.Delimiter { color: #c000c0; }
.muComment { color: #005faf; }
.Special { color: #ff6060; }
-->
</style>
<script>
<!--
/* 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;
}
var 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();'>
<a href='https://github.com/akkartik/mu/blob/main/apps/ex7.mu'>https://github.com/akkartik/mu/blob/main/apps/ex7.mu</a>
<pre id='vimCodeElement'>
<span id="L1" class="LineNr"> 1 </span><span class="muComment"># Cursor-based motions.</span>
<span id="L2" class="LineNr"> 2 </span><span class="muComment">#</span>
<span id="L3" class="LineNr"> 3 </span><span class="muComment"># To build a disk image:</span>
<span id="L4" class="LineNr"> 4 </span><span class="muComment"># ./translate apps/ex7.mu # emits code.img</span>
<span id="L5" class="LineNr"> 5 </span><span class="muComment"># To run:</span>
<span id="L6" class="LineNr"> 6 </span><span class="muComment"># qemu-system-i386 code.img</span>
<span id="L7" class="LineNr"> 7 </span><span class="muComment"># Or:</span>
<span id="L8" class="LineNr"> 8 </span><span class="muComment"># bochs -f bochsrc # bochsrc loads code.img</span>
<span id="L9" class="LineNr"> 9 </span><span class="muComment">#</span>
<span id="L10" class="LineNr">10 </span><span class="muComment"># Expected output: an interactive game a bit like "snakes". Try pressing h, j,</span>
<span id="L11" class="LineNr">11 </span><span class="muComment"># k, l.</span>
<span id="L12" class="LineNr">12 </span>
<span id="L13" class="LineNr">13 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='ex7.mu.html#L13'>main</a></span> <a href='../500fake-screen.mu.html#L14'>screen</a>: (addr <a href='../500fake-screen.mu.html#L14'>screen</a>), keyboard: (addr keyboard), data-disk: (addr disk) <span class="Delimiter">{</span>
<span id="L14" class="LineNr">14 </span> <span class="PreProc">var</span> space/eax: grapheme <span class="Special"><-</span> copy <span class="Constant">0x20</span>
<span id="L15" class="LineNr">15 </span> <a href='../500fake-screen.mu.html#L190'>set-cursor-position</a> <a href='../500fake-screen.mu.html#L14'>screen</a>, <span class="Constant">0</span>, <span class="Constant">0</span>
<span id="L16" class="LineNr">16 </span> <span class="Delimiter">{</span>
<span id="L17" class="LineNr">17 </span> <a href='../500fake-screen.mu.html#L237'>draw-cursor</a> <a href='../500fake-screen.mu.html#L14'>screen</a>, space
<span id="L18" class="LineNr">18 </span> <span class="PreProc">var</span> key/eax: byte <span class="Special"><-</span> <a href='../102keyboard.subx.html#L21'>read-key</a> keyboard
<span id="L19" class="LineNr">19 </span> <span class="Delimiter">{</span>
<span id="L20" class="LineNr">20 </span> compare key, <span class="Constant">0x68</span>/h
<span id="L21" class="LineNr">21 </span> <span class="PreProc">break-if-!=</span>
<span id="L22" class="LineNr">22 </span> <a href='../501draw-text.mu.html#L92'>draw-code-point-at-cursor</a> <a href='../500fake-screen.mu.html#L14'>screen</a>, <span class="Constant">0x2d</span>/dash, <span class="Constant">0x31</span>/fg, <span class="Constant">0</span>/bg
<span id="L23" class="LineNr">23 </span> <a href='../501draw-text.mu.html#L3'>move-cursor-left</a> <span class="Constant">0</span>
<span id="L24" class="LineNr">24 </span> <span class="Delimiter">}</span>
<span id="L25" class="LineNr">25 </span> <span class="Delimiter">{</span>
<span id="L26" class="LineNr">26 </span> compare key, <span class="Constant">0x6a</span>/j
<span id="L27" class="LineNr">27 </span> <span class="PreProc">break-if-!=</span>
<span id="L28" class="LineNr">28 </span> <a href='../501draw-text.mu.html#L92'>draw-code-point-at-cursor</a> <a href='../500fake-screen.mu.html#L14'>screen</a>, <span class="Constant">0x7c</span>/vertical-bar, <span class="Constant">0x31</span>/fg, <span class="Constant">0</span>/bg
<span id="L29" class="LineNr">29 </span> <a href='../501draw-text.mu.html#L47'>move-cursor-down</a> <span class="Constant">0</span>
<span id="L30" class="LineNr">30 </span> <span class="Delimiter">}</span>
<span id="L31" class="LineNr">31 </span> <span class="Delimiter">{</span>
<span id="L32" class="LineNr">32 </span> compare key, <span class="Constant">0x6b</span>/k
<span id="L33" class="LineNr">33 </span> <span class="PreProc">break-if-!=</span>
<span id="L34" class="LineNr">34 </span> <a href='../501draw-text.mu.html#L92'>draw-code-point-at-cursor</a> <a href='../500fake-screen.mu.html#L14'>screen</a>, <span class="Constant">0x7c</span>/vertical-bar, <span class="Constant">0x31</span>/fg, <span class="Constant">0</span>/bg
<span id="L35" class="LineNr">35 </span> <a href='../501draw-text.mu.html#L34'>move-cursor-up</a> <span class="Constant">0</span>
<span id="L36" class="LineNr">36 </span> <span class="Delimiter">}</span>
<span id="L37" class="LineNr">37 </span> <span class="Delimiter">{</span>
<span id="L38" class="LineNr">38 </span> compare key, <span class="Constant">0x6c</span>/l
<span id="L39" class="LineNr">39 </span> <span class="PreProc">break-if-!=</span>
<span id="L40" class="LineNr">40 </span> <span class="PreProc">var</span> g/eax: code-point <span class="Special"><-</span> copy <span class="Constant">0x2d</span>/dash
<span id="L41" class="LineNr">41 </span> <a href='../501draw-text.mu.html#L92'>draw-code-point-at-cursor</a> <a href='../500fake-screen.mu.html#L14'>screen</a>, <span class="Constant">0x2d</span>/dash, <span class="Constant">0x31</span>/fg, <span class="Constant">0</span>/bg
<span id="L42" class="LineNr">42 </span> <a href='../501draw-text.mu.html#L16'>move-cursor-right</a> <span class="Constant">0</span>
<span id="L43" class="LineNr">43 </span> <span class="Delimiter">}</span>
<span id="L44" class="LineNr">44 </span> <span class="PreProc">loop</span>
<span id="L45" class="LineNr">45 </span> <span class="Delimiter">}</span>
<span id="L46" class="LineNr">46 </span><span class="Delimiter">}</span>
</pre>
</body>
</html>
<!-- vim: set foldmethod=manual : -->
|