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<a href='https://github.com/akkartik/mu/blob/master/apps/tile/gap-buffer.mu'>https://github.com/akkartik/mu/blob/master/apps/tile/gap-buffer.mu</a>
<pre id='vimCodeElement'>
<span id="L1" class="LineNr"> 1 </span><span class="PreProc">type</span> <a href='gap-buffer.mu.html#L1'>gap-buffer</a> <span class="Delimiter">{</span>
<span id="L2" class="LineNr"> 2 </span> left: grapheme-stack
<span id="L3" class="LineNr"> 3 </span> right: grapheme-stack
<span id="L4" class="LineNr"> 4 </span><span class="Delimiter">}</span>
<span id="L5" class="LineNr"> 5 </span>
<span id="L6" class="LineNr"> 6 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='gap-buffer.mu.html#L6'>initialize-gap-buffer</a></span> _self: (addr <a href='gap-buffer.mu.html#L1'>gap-buffer</a>) <span class="Delimiter">{</span>
<span id="L7" class="LineNr"> 7 </span> <span class="PreProc">var</span> self/<span class="Constant">esi</span>: (addr <a href='gap-buffer.mu.html#L1'>gap-buffer</a>) <span class="SpecialChar"><-</span> copy _self
<span id="L8" class="LineNr"> 8 </span> <span class="PreProc">var</span> left/<span class="Constant">eax</span>: (addr grapheme-stack) <span class="SpecialChar"><-</span> <a href='../../131table.subx.html#L26'>get</a> self, left
<span id="L9" class="LineNr"> 9 </span> initialize-grapheme-stack left, <span class="Constant">0x10</span> <span class="muComment"># max-word-size</span>
<span id="L10" class="LineNr"> 10 </span> <span class="PreProc">var</span> right/<span class="Constant">eax</span>: (addr grapheme-stack) <span class="SpecialChar"><-</span> <a href='../../131table.subx.html#L26'>get</a> self, right
<span id="L11" class="LineNr"> 11 </span> initialize-grapheme-stack right, <span class="Constant">0x10</span> <span class="muComment"># max-word-size</span>
<span id="L12" class="LineNr"> 12 </span><span class="Delimiter">}</span>
<span id="L13" class="LineNr"> 13 </span>
<span id="L14" class="LineNr"> 14 </span><span class="muComment"># just for tests</span>
<span id="L15" class="LineNr"> 15 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='gap-buffer.mu.html#L15'>initialize-gap-buffer-with</a></span> self: (addr <a href='gap-buffer.mu.html#L1'>gap-buffer</a>), s: (addr array byte) <span class="Delimiter">{</span>
<span id="L16" class="LineNr"> 16 </span> <a href='gap-buffer.mu.html#L6'>initialize-gap-buffer</a> self
<span id="L17" class="LineNr"> 17 </span> <span class="PreProc">var</span> stream-storage: (stream byte <span class="Constant">0x10</span>) <span class="muComment"># max-word-size</span>
<span id="L18" class="LineNr"> 18 </span> <span class="PreProc">var</span> stream/<span class="Constant">ecx</span>: (addr stream byte) <span class="SpecialChar"><-</span> address stream-storage
<span id="L19" class="LineNr"> 19 </span> <a href='../../108write.subx.html#L24'>write</a> stream, s
<span id="L20" class="LineNr"> 20 </span> <span class="Delimiter">{</span>
<span id="L21" class="LineNr"> 21 </span> <span class="PreProc">var</span> done?/<span class="Constant">eax</span>: boolean <span class="SpecialChar"><-</span> <a href='../../309stream.subx.html#L6'>stream-empty?</a> stream
<span id="L22" class="LineNr"> 22 </span> compare done?, <span class="Constant">0</span> <span class="muComment"># false</span>
<span id="L23" class="LineNr"> 23 </span> <span class="PreProc">break-if-!=</span>
<span id="L24" class="LineNr"> 24 </span> <span class="PreProc">var</span> g/<span class="Constant">eax</span>: grapheme <span class="SpecialChar"><-</span> <a href='../../403unicode.mu.html#L160'>read-grapheme</a> stream
<span id="L25" class="LineNr"> 25 </span> <a href='gap-buffer.mu.html#L102'>add-grapheme-at-gap</a> self, g
<span id="L26" class="LineNr"> 26 </span> <span class="PreProc">loop</span>
<span id="L27" class="LineNr"> 27 </span> <span class="Delimiter">}</span>
<span id="L28" class="LineNr"> 28 </span><span class="Delimiter">}</span>
<span id="L29" class="LineNr"> 29 </span>
<span id="L30" class="LineNr"> 30 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='gap-buffer.mu.html#L30'>gap-buffer-to-string</a></span> self: (addr <a href='gap-buffer.mu.html#L1'>gap-buffer</a>), out: (addr handle array byte) <span class="Delimiter">{</span>
<span id="L31" class="LineNr"> 31 </span> <span class="PreProc">var</span> s-storage: (stream byte <span class="Constant">0x100</span>)
<span id="L32" class="LineNr"> 32 </span> <span class="PreProc">var</span> s/<span class="Constant">ecx</span>: (addr stream byte) <span class="SpecialChar"><-</span> address s-storage
<span id="L33" class="LineNr"> 33 </span> <a href='gap-buffer.mu.html#L37'>emit-gap-buffer</a> self, s
<span id="L34" class="LineNr"> 34 </span> <a href='../../310copy-bytes.subx.html#L59'>stream-to-string</a> s, out
<span id="L35" class="LineNr"> 35 </span><span class="Delimiter">}</span>
<span id="L36" class="LineNr"> 36 </span>
<span id="L37" class="LineNr"> 37 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='gap-buffer.mu.html#L37'>emit-gap-buffer</a></span> _self: (addr <a href='gap-buffer.mu.html#L1'>gap-buffer</a>), out: (addr stream byte) <span class="Delimiter">{</span>
<span id="L38" class="LineNr"> 38 </span> <span class="PreProc">var</span> self/<span class="Constant">esi</span>: (addr <a href='gap-buffer.mu.html#L1'>gap-buffer</a>) <span class="SpecialChar"><-</span> copy _self
<span id="L39" class="LineNr"> 39 </span> <a href='../../106stream.subx.html#L17'>clear-stream</a> out
<span id="L40" class="LineNr"> 40 </span> <span class="PreProc">var</span> left/<span class="Constant">eax</span>: (addr grapheme-stack) <span class="SpecialChar"><-</span> <a href='../../131table.subx.html#L26'>get</a> self, left
<span id="L41" class="LineNr"> 41 </span> <a href='gap-buffer.mu.html#L47'>emit-stack-from-bottom</a> left, out
<span id="L42" class="LineNr"> 42 </span> <span class="PreProc">var</span> right/<span class="Constant">eax</span>: (addr grapheme-stack) <span class="SpecialChar"><-</span> <a href='../../131table.subx.html#L26'>get</a> self, right
<span id="L43" class="LineNr"> 43 </span> <a href='gap-buffer.mu.html#L65'>emit-stack-from-top</a> right, out
<span id="L44" class="LineNr"> 44 </span><span class="Delimiter">}</span>
<span id="L45" class="LineNr"> 45 </span>
<span id="L46" class="LineNr"> 46 </span><span class="muComment"># dump stack from bottom to top</span>
<span id="L47" class="LineNr"> 47 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='gap-buffer.mu.html#L47'>emit-stack-from-bottom</a></span> _self: (addr grapheme-stack), out: (addr stream byte) <span class="Delimiter">{</span>
<span id="L48" class="LineNr"> 48 </span> <span class="PreProc">var</span> self/<span class="Constant">esi</span>: (addr grapheme-stack) <span class="SpecialChar"><-</span> copy _self
<span id="L49" class="LineNr"> 49 </span> <span class="PreProc">var</span> data-ah/<span class="Constant">edi</span>: (addr handle array grapheme) <span class="SpecialChar"><-</span> <a href='../../131table.subx.html#L26'>get</a> self, data
<span id="L50" class="LineNr"> 50 </span> <span class="PreProc">var</span> _data/<span class="Constant">eax</span>: (addr array grapheme) <span class="SpecialChar"><-</span> <a href='../../120allocate.subx.html#L256'>lookup</a> *data-ah
<span id="L51" class="LineNr"> 51 </span> <span class="PreProc">var</span> data/<span class="Constant">edi</span>: (addr array grapheme) <span class="SpecialChar"><-</span> copy _data
<span id="L52" class="LineNr"> 52 </span> <span class="PreProc">var</span> top-addr/<span class="Constant">ecx</span>: (addr int) <span class="SpecialChar"><-</span> <a href='../../131table.subx.html#L26'>get</a> self, <a href='../../203stack.subx.html#L338'>top</a>
<span id="L53" class="LineNr"> 53 </span> <span class="PreProc">var</span> i/<span class="Constant">eax</span>: int <span class="SpecialChar"><-</span> copy <span class="Constant">0</span>
<span id="L54" class="LineNr"> 54 </span> <span class="Delimiter">{</span>
<span id="L55" class="LineNr"> 55 </span> compare i, *top-addr
<span id="L56" class="LineNr"> 56 </span> <span class="PreProc">break-if->=</span>
<span id="L57" class="LineNr"> 57 </span> <span class="PreProc">var</span> g/<span class="Constant">edx</span>: (addr grapheme) <span class="SpecialChar"><-</span> index data, i
<span id="L58" class="LineNr"> 58 </span> <a href='../../403unicode.mu.html#L379'>write-grapheme</a> out, *g
<span id="L59" class="LineNr"> 59 </span> i <span class="SpecialChar"><-</span> increment
<span id="L60" class="LineNr"> 60 </span> <span class="PreProc">loop</span>
<span id="L61" class="LineNr"> 61 </span> <span class="Delimiter">}</span>
<span id="L62" class="LineNr"> 62 </span><span class="Delimiter">}</span>
<span id="L63" class="LineNr"> 63 </span>
<span id="L64" class="LineNr"> 64 </span><span class="muComment"># dump stack from top to bottom</span>
<span id="L65" class="LineNr"> 65 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='gap-buffer.mu.html#L65'>emit-stack-from-top</a></span> _self: (addr grapheme-stack), out: (addr stream byte) <span class="Delimiter">{</span>
<span id="L66" class="LineNr"> 66 </span> <span class="PreProc">var</span> self/<span class="Constant">esi</span>: (addr grapheme-stack) <span class="SpecialChar"><-</span> copy _self
<span id="L67" class="LineNr"> 67 </span> <span class="PreProc">var</span> data-ah/<span class="Constant">edi</span>: (addr handle array grapheme) <span class="SpecialChar"><-</span> <a href='../../131table.subx.html#L26'>get</a> self, data
<span id="L68" class="LineNr"> 68 </span> <span class="PreProc">var</span> _data/<span class="Constant">eax</span>: (addr array grapheme) <span class="SpecialChar"><-</span> <a href='../../120allocate.subx.html#L256'>lookup</a> *data-ah
<span id="L69" class="LineNr"> 69 </span> <span class="PreProc">var</span> data/<span class="Constant">edi</span>: (addr array grapheme) <span class="SpecialChar"><-</span> copy _data
<span id="L70" class="LineNr"> 70 </span> <span class="PreProc">var</span> top-addr/<span class="Constant">ecx</span>: (addr int) <span class="SpecialChar"><-</span> <a href='../../131table.subx.html#L26'>get</a> self, <a href='../../203stack.subx.html#L338'>top</a>
<span id="L71" class="LineNr"> 71 </span> <span class="PreProc">var</span> i/<span class="Constant">eax</span>: int <span class="SpecialChar"><-</span> copy *top-addr
<span id="L72" class="LineNr"> 72 </span> i <span class="SpecialChar"><-</span> decrement
<span id="L73" class="LineNr"> 73 </span> <span class="Delimiter">{</span>
<span id="L74" class="LineNr"> 74 </span> compare i, <span class="Constant">0</span>
<span id="L75" class="LineNr"> 75 </span> <span class="PreProc">break-if-<</span>
<span id="L76" class="LineNr"> 76 </span> <span class="PreProc">var</span> g/<span class="Constant">edx</span>: (addr grapheme) <span class="SpecialChar"><-</span> index data, i
<span id="L77" class="LineNr"> 77 </span> <a href='../../403unicode.mu.html#L379'>write-grapheme</a> out, *g
<span id="L78" class="LineNr"> 78 </span> i <span class="SpecialChar"><-</span> decrement
<span id="L79" class="LineNr"> 79 </span> <span class="PreProc">loop</span>
<span id="L80" class="LineNr"> 80 </span> <span class="Delimiter">}</span>
<span id="L81" class="LineNr"> 81 </span><span class="Delimiter">}</span>
<span id="L82" class="LineNr"> 82 </span>
<span id="L83" class="LineNr"> 83 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='gap-buffer.mu.html#L83'>render-gap-buffer</a></span> <a href='../../405screen.mu.html#L9'>screen</a>: (addr <a href='../../405screen.mu.html#L9'>screen</a>), _gap: (addr <a href='gap-buffer.mu.html#L1'>gap-buffer</a>) <span class="Delimiter">{</span>
<span id="L84" class="LineNr"> 84 </span> <span class="PreProc">var</span> gap/<span class="Constant">esi</span>: (addr <a href='gap-buffer.mu.html#L1'>gap-buffer</a>) <span class="SpecialChar"><-</span> copy _gap
<span id="L85" class="LineNr"> 85 </span> <span class="PreProc">var</span> left/<span class="Constant">eax</span>: (addr grapheme-stack) <span class="SpecialChar"><-</span> <a href='../../131table.subx.html#L26'>get</a> gap, left
<span id="L86" class="LineNr"> 86 </span> render-stack-from-bottom left, <a href='../../405screen.mu.html#L9'>screen</a>
<span id="L87" class="LineNr"> 87 </span> <span class="PreProc">var</span> right/<span class="Constant">eax</span>: (addr grapheme-stack) <span class="SpecialChar"><-</span> <a href='../../131table.subx.html#L26'>get</a> gap, right
<span id="L88" class="LineNr"> 88 </span> render-stack-from-top right, <a href='../../405screen.mu.html#L9'>screen</a>
<span id="L89" class="LineNr"> 89 </span><span class="Delimiter">}</span>
<span id="L90" class="LineNr"> 90 </span>
<span id="L91" class="LineNr"> 91 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='gap-buffer.mu.html#L91'>gap-buffer-length</a></span> _gap: (addr <a href='gap-buffer.mu.html#L1'>gap-buffer</a>)<span class="PreProc"> -> </span>result/<span class="Constant">eax</span>: int <span class="Delimiter">{</span>
<span id="L92" class="LineNr"> 92 </span> <span class="PreProc">var</span> gap/<span class="Constant">esi</span>: (addr <a href='gap-buffer.mu.html#L1'>gap-buffer</a>) <span class="SpecialChar"><-</span> copy _gap
<span id="L93" class="LineNr"> 93 </span> <span class="PreProc">var</span> left/<span class="Constant">eax</span>: (addr grapheme-stack) <span class="SpecialChar"><-</span> <a href='../../131table.subx.html#L26'>get</a> gap, left
<span id="L94" class="LineNr"> 94 </span> <span class="PreProc">var</span> tmp/<span class="Constant">eax</span>: (addr int) <span class="SpecialChar"><-</span> <a href='../../131table.subx.html#L26'>get</a> left, <a href='../../203stack.subx.html#L338'>top</a>
<span id="L95" class="LineNr"> 95 </span> <span class="PreProc">var</span> left-length/<span class="Constant">ecx</span>: int <span class="SpecialChar"><-</span> copy *tmp
<span id="L96" class="LineNr"> 96 </span> <span class="PreProc">var</span> right/<span class="Constant">esi</span>: (addr grapheme-stack) <span class="SpecialChar"><-</span> <a href='../../131table.subx.html#L26'>get</a> gap, right
<span id="L97" class="LineNr"> 97 </span> tmp <span class="SpecialChar"><-</span> <a href='../../131table.subx.html#L26'>get</a> right, <a href='../../203stack.subx.html#L338'>top</a>
<span id="L98" class="LineNr"> 98 </span> result <span class="SpecialChar"><-</span> copy *tmp
<span id="L99" class="LineNr"> 99 </span> result <span class="SpecialChar"><-</span> add left-length
<span id="L100" class="LineNr">100 </span><span class="Delimiter">}</span>
<span id="L101" class="LineNr">101 </span>
<span id="L102" class="LineNr">102 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='gap-buffer.mu.html#L102'>add-grapheme-at-gap</a></span> _self: (addr <a href='gap-buffer.mu.html#L1'>gap-buffer</a>), g: grapheme <span class="Delimiter">{</span>
<span id="L103" class="LineNr">103 </span> <span class="PreProc">var</span> self/<span class="Constant">esi</span>: (addr <a href='gap-buffer.mu.html#L1'>gap-buffer</a>) <span class="SpecialChar"><-</span> copy _self
<span id="L104" class="LineNr">104 </span> <span class="PreProc">var</span> left/<span class="Constant">eax</span>: (addr grapheme-stack) <span class="SpecialChar"><-</span> <a href='../../131table.subx.html#L26'>get</a> self, left
<span id="L105" class="LineNr">105 </span> push-grapheme-stack left, g
<span id="L106" class="LineNr">106 </span><span class="Delimiter">}</span>
<span id="L107" class="LineNr">107 </span>
<span id="L108" class="LineNr">108 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='gap-buffer.mu.html#L108'>gap-to-start</a></span> self: (addr <a href='gap-buffer.mu.html#L1'>gap-buffer</a>) <span class="Delimiter">{</span>
<span id="L109" class="LineNr">109 </span> <span class="Delimiter">{</span>
<span id="L110" class="LineNr">110 </span> <span class="PreProc">var</span> curr/<span class="Constant">eax</span>: grapheme <span class="SpecialChar"><-</span> <a href='gap-buffer.mu.html#L154'>gap-left</a> self
<span id="L111" class="LineNr">111 </span> compare curr, <span class="Constant">-1</span>
<span id="L112" class="LineNr">112 </span> <span class="PreProc">loop-if-!=</span>
<span id="L113" class="LineNr">113 </span> <span class="Delimiter">}</span>
<span id="L114" class="LineNr">114 </span><span class="Delimiter">}</span>
<span id="L115" class="LineNr">115 </span>
<span id="L116" class="LineNr">116 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='gap-buffer.mu.html#L116'>gap-to-end</a></span> self: (addr <a href='gap-buffer.mu.html#L1'>gap-buffer</a>) <span class="Delimiter">{</span>
<span id="L117" class="LineNr">117 </span> <span class="Delimiter">{</span>
<span id="L118" class="LineNr">118 </span> <span class="PreProc">var</span> curr/<span class="Constant">eax</span>: grapheme <span class="SpecialChar"><-</span> <a href='gap-buffer.mu.html#L136'>gap-right</a> self
<span id="L119" class="LineNr">119 </span> compare curr, <span class="Constant">-1</span>
<span id="L120" class="LineNr">120 </span> <span class="PreProc">loop-if-!=</span>
<span id="L121" class="LineNr">121 </span> <span class="Delimiter">}</span>
<span id="L122" class="LineNr">122 </span><span class="Delimiter">}</span>
<span id="L123" class="LineNr">123 </span>
<span id="L124" class="LineNr">124 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='gap-buffer.mu.html#L124'>gap-at-start?</a></span> _self: (addr <a href='gap-buffer.mu.html#L1'>gap-buffer</a>)<span class="PreProc"> -> </span>result/<span class="Constant">eax</span>: boolean <span class="Delimiter">{</span>
<span id="L125" class="LineNr">125 </span> <span class="PreProc">var</span> self/<span class="Constant">esi</span>: (addr <a href='gap-buffer.mu.html#L1'>gap-buffer</a>) <span class="SpecialChar"><-</span> copy _self
<span id="L126" class="LineNr">126 </span> <span class="PreProc">var</span> left/<span class="Constant">eax</span>: (addr grapheme-stack) <span class="SpecialChar"><-</span> <a href='../../131table.subx.html#L26'>get</a> self, left
<span id="L127" class="LineNr">127 </span> result <span class="SpecialChar"><-</span> grapheme-stack-empty? left
<span id="L128" class="LineNr">128 </span><span class="Delimiter">}</span>
<span id="L129" class="LineNr">129 </span>
<span id="L130" class="LineNr">130 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='gap-buffer.mu.html#L130'>gap-at-end?</a></span> _self: (addr <a href='gap-buffer.mu.html#L1'>gap-buffer</a>)<span class="PreProc"> -> </span>result/<span class="Constant">eax</span>: boolean <span class="Delimiter">{</span>
<span id="L131" class="LineNr">131 </span> <span class="PreProc">var</span> self/<span class="Constant">esi</span>: (addr <a href='gap-buffer.mu.html#L1'>gap-buffer</a>) <span class="SpecialChar"><-</span> copy _self
<span id="L132" class="LineNr">132 </span> <span class="PreProc">var</span> right/<span class="Constant">eax</span>: (addr grapheme-stack) <span class="SpecialChar"><-</span> <a href='../../131table.subx.html#L26'>get</a> self, right
<span id="L133" class="LineNr">133 </span> result <span class="SpecialChar"><-</span> grapheme-stack-empty? right
<span id="L134" class="LineNr">134 </span><span class="Delimiter">}</span>
<span id="L135" class="LineNr">135 </span>
<span id="L136" class="LineNr">136 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='gap-buffer.mu.html#L136'>gap-right</a></span> _self: (addr <a href='gap-buffer.mu.html#L1'>gap-buffer</a>)<span class="PreProc"> -> </span>result/<span class="Constant">eax</span>: grapheme <span class="Delimiter">{</span>
<span id="L137" class="LineNr">137 </span>$gap-right:body: <span class="Delimiter">{</span>
<span id="L138" class="LineNr">138 </span> <span class="PreProc">var</span> self/<span class="Constant">esi</span>: (addr <a href='gap-buffer.mu.html#L1'>gap-buffer</a>) <span class="SpecialChar"><-</span> copy _self
<span id="L139" class="LineNr">139 </span> <span class="PreProc">var</span> g/<span class="Constant">edx</span>: grapheme <span class="SpecialChar"><-</span> copy <span class="Constant">0</span>
<span id="L140" class="LineNr">140 </span> <span class="Delimiter">{</span>
<span id="L141" class="LineNr">141 </span> <span class="PreProc">var</span> right/<span class="Constant">ecx</span>: (addr grapheme-stack) <span class="SpecialChar"><-</span> <a href='../../131table.subx.html#L26'>get</a> self, right
<span id="L142" class="LineNr">142 </span> result <span class="SpecialChar"><-</span> pop-grapheme-stack right
<span id="L143" class="LineNr">143 </span> compare result, <span class="Constant">-1</span>
<span id="L144" class="LineNr">144 </span> <span class="PreProc">break-if-=</span> $gap-right:body
<span id="L145" class="LineNr">145 </span> g <span class="SpecialChar"><-</span> copy result
<span id="L146" class="LineNr">146 </span> <span class="Delimiter">}</span>
<span id="L147" class="LineNr">147 </span> <span class="Delimiter">{</span>
<span id="L148" class="LineNr">148 </span> <span class="PreProc">var</span> left/<span class="Constant">ecx</span>: (addr grapheme-stack) <span class="SpecialChar"><-</span> <a href='../../131table.subx.html#L26'>get</a> self, left
<span id="L149" class="LineNr">149 </span> push-grapheme-stack left, g
<span id="L150" class="LineNr">150 </span> <span class="Delimiter">}</span>
<span id="L151" class="LineNr">151 </span><span class="Delimiter">}</span>
<span id="L152" class="LineNr">152 </span><span class="Delimiter">}</span>
<span id="L153" class="LineNr">153 </span>
<span id="L154" class="LineNr">154 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='gap-buffer.mu.html#L154'>gap-left</a></span> _self: (addr <a href='gap-buffer.mu.html#L1'>gap-buffer</a>)<span class="PreProc"> -> </span>result/<span class="Constant">eax</span>: grapheme <span class="Delimiter">{</span>
<span id="L155" class="LineNr">155 </span>$gap-left:body: <span class="Delimiter">{</span>
<span id="L156" class="LineNr">156 </span> <span class="PreProc">var</span> self/<span class="Constant">esi</span>: (addr <a href='gap-buffer.mu.html#L1'>gap-buffer</a>) <span class="SpecialChar"><-</span> copy _self
<span id="L157" class="LineNr">157 </span> <span class="PreProc">var</span> g/<span class="Constant">edx</span>: grapheme <span class="SpecialChar"><-</span> copy <span class="Constant">0</span>
<span id="L158" class="LineNr">158 </span> <span class="Delimiter">{</span>
<span id="L159" class="LineNr">159 </span> <span class="PreProc">var</span> left/<span class="Constant">ecx</span>: (addr grapheme-stack) <span class="SpecialChar"><-</span> <a href='../../131table.subx.html#L26'>get</a> self, left
<span id="L160" class="LineNr">160 </span> result <span class="SpecialChar"><-</span> pop-grapheme-stack left
<span id="L161" class="LineNr">161 </span> compare result, <span class="Constant">-1</span>
<span id="L162" class="LineNr">162 </span> <span class="PreProc">break-if-=</span> $gap-left:body
<span id="L163" class="LineNr">163 </span> g <span class="SpecialChar"><-</span> copy result
<span id="L164" class="LineNr">164 </span> <span class="Delimiter">}</span>
<span id="L165" class="LineNr">165 </span> <span class="Delimiter">{</span>
<span id="L166" class="LineNr">166 </span> <span class="PreProc">var</span> right/<span class="Constant">ecx</span>: (addr grapheme-stack) <span class="SpecialChar"><-</span> <a href='../../131table.subx.html#L26'>get</a> self, right
<span id="L167" class="LineNr">167 </span> push-grapheme-stack right, g
<span id="L168" class="LineNr">168 </span> <span class="Delimiter">}</span>
<span id="L169" class="LineNr">169 </span><span class="Delimiter">}</span>
<span id="L170" class="LineNr">170 </span><span class="Delimiter">}</span>
<span id="L171" class="LineNr">171 </span>
<span id="L172" class="LineNr">172 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='gap-buffer.mu.html#L172'>gap-index</a></span> _self: (addr <a href='gap-buffer.mu.html#L1'>gap-buffer</a>)<span class="PreProc"> -> </span>result/<span class="Constant">eax</span>: int <span class="Delimiter">{</span>
<span id="L173" class="LineNr">173 </span> <span class="PreProc">var</span> self/<span class="Constant">eax</span>: (addr <a href='gap-buffer.mu.html#L1'>gap-buffer</a>) <span class="SpecialChar"><-</span> copy _self
<span id="L174" class="LineNr">174 </span> <span class="PreProc">var</span> left/<span class="Constant">eax</span>: (addr grapheme-stack) <span class="SpecialChar"><-</span> <a href='../../131table.subx.html#L26'>get</a> self, left
<span id="L175" class="LineNr">175 </span> <span class="PreProc">var</span> top-addr/<span class="Constant">eax</span>: (addr int) <span class="SpecialChar"><-</span> <a href='../../131table.subx.html#L26'>get</a> left, <a href='../../203stack.subx.html#L338'>top</a>
<span id="L176" class="LineNr">176 </span> result <span class="SpecialChar"><-</span> copy *top-addr
<span id="L177" class="LineNr">177 </span><span class="Delimiter">}</span>
<span id="L178" class="LineNr">178 </span>
<span id="L179" class="LineNr">179 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='gap-buffer.mu.html#L179'>first-grapheme-in-gap-buffer</a></span> _self: (addr <a href='gap-buffer.mu.html#L1'>gap-buffer</a>)<span class="PreProc"> -> </span>result/<span class="Constant">eax</span>: grapheme <span class="Delimiter">{</span>
<span id="L180" class="LineNr">180 </span>$first-grapheme-in-gap-buffer:body: <span class="Delimiter">{</span>
<span id="L181" class="LineNr">181 </span> <span class="PreProc">var</span> self/<span class="Constant">esi</span>: (addr <a href='gap-buffer.mu.html#L1'>gap-buffer</a>) <span class="SpecialChar"><-</span> copy _self
<span id="L182" class="LineNr">182 </span> <span class="muComment"># try to read from left</span>
<span id="L183" class="LineNr">183 </span> <span class="PreProc">var</span> left/<span class="Constant">eax</span>: (addr grapheme-stack) <span class="SpecialChar"><-</span> <a href='../../131table.subx.html#L26'>get</a> self, left
<span id="L184" class="LineNr">184 </span> <span class="PreProc">var</span> top-addr/<span class="Constant">ecx</span>: (addr int) <span class="SpecialChar"><-</span> <a href='../../131table.subx.html#L26'>get</a> left, <a href='../../203stack.subx.html#L338'>top</a>
<span id="L185" class="LineNr">185 </span> compare *top-addr, <span class="Constant">0</span>
<span id="L186" class="LineNr">186 </span> <span class="Delimiter">{</span>
<span id="L187" class="LineNr">187 </span> <span class="PreProc">break-if-<=</span>
<span id="L188" class="LineNr">188 </span> <span class="PreProc">var</span> data-ah/<span class="Constant">eax</span>: (addr handle array grapheme) <span class="SpecialChar"><-</span> <a href='../../131table.subx.html#L26'>get</a> left, data
<span id="L189" class="LineNr">189 </span> <span class="PreProc">var</span> data/<span class="Constant">eax</span>: (addr array grapheme) <span class="SpecialChar"><-</span> <a href='../../120allocate.subx.html#L256'>lookup</a> *data-ah
<span id="L190" class="LineNr">190 </span> <span class="PreProc">var</span> result-addr/<span class="Constant">eax</span>: (addr grapheme) <span class="SpecialChar"><-</span> index data, <span class="Constant">0</span>
<span id="L191" class="LineNr">191 </span> result <span class="SpecialChar"><-</span> copy *result-addr
<span id="L192" class="LineNr">192 </span> <span class="PreProc">break</span> $first-grapheme-in-gap-buffer:body
<span id="L193" class="LineNr">193 </span> <span class="Delimiter">}</span>
<span id="L194" class="LineNr">194 </span> <span class="muComment"># try to read from right</span>
<span id="L195" class="LineNr">195 </span> <span class="PreProc">var</span> right/<span class="Constant">eax</span>: (addr grapheme-stack) <span class="SpecialChar"><-</span> <a href='../../131table.subx.html#L26'>get</a> self, right
<span id="L196" class="LineNr">196 </span> top-addr <span class="SpecialChar"><-</span> <a href='../../131table.subx.html#L26'>get</a> right, <a href='../../203stack.subx.html#L338'>top</a>
<span id="L197" class="LineNr">197 </span> compare *top-addr, <span class="Constant">0</span>
<span id="L198" class="LineNr">198 </span> <span class="Delimiter">{</span>
<span id="L199" class="LineNr">199 </span> <span class="PreProc">break-if-<=</span>
<span id="L200" class="LineNr">200 </span> <span class="PreProc">var</span> data-ah/<span class="Constant">eax</span>: (addr handle array grapheme) <span class="SpecialChar"><-</span> <a href='../../131table.subx.html#L26'>get</a> right, data
<span id="L201" class="LineNr">201 </span> <span class="PreProc">var</span> data/<span class="Constant">eax</span>: (addr array grapheme) <span class="SpecialChar"><-</span> <a href='../../120allocate.subx.html#L256'>lookup</a> *data-ah
<span id="L202" class="LineNr">202 </span> <span class="PreProc">var</span> <a href='../../203stack.subx.html#L338'>top</a>/<span class="Constant">ecx</span>: int <span class="SpecialChar"><-</span> copy *top-addr
<span id="L203" class="LineNr">203 </span> <a href='../../203stack.subx.html#L338'>top</a> <span class="SpecialChar"><-</span> decrement
<span id="L204" class="LineNr">204 </span> <span class="PreProc">var</span> result-addr/<span class="Constant">eax</span>: (addr grapheme) <span class="SpecialChar"><-</span> index data, <a href='../../203stack.subx.html#L338'>top</a>
<span id="L205" class="LineNr">205 </span> result <span class="SpecialChar"><-</span> copy *result-addr
<span id="L206" class="LineNr">206 </span> <span class="PreProc">break</span> $first-grapheme-in-gap-buffer:body
<span id="L207" class="LineNr">207 </span> <span class="Delimiter">}</span>
<span id="L208" class="LineNr">208 </span> <span class="muComment"># give up</span>
<span id="L209" class="LineNr">209 </span> result <span class="SpecialChar"><-</span> copy <span class="Constant">-1</span>
<span id="L210" class="LineNr">210 </span><span class="Delimiter">}</span>
<span id="L211" class="LineNr">211 </span><span class="Delimiter">}</span>
<span id="L212" class="LineNr">212 </span>
<span id="L213" class="LineNr">213 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='gap-buffer.mu.html#L213'>delete-before-gap</a></span> _self: (addr <a href='gap-buffer.mu.html#L1'>gap-buffer</a>) <span class="Delimiter">{</span>
<span id="L214" class="LineNr">214 </span> <span class="PreProc">var</span> self/<span class="Constant">eax</span>: (addr <a href='gap-buffer.mu.html#L1'>gap-buffer</a>) <span class="SpecialChar"><-</span> copy _self
<span id="L215" class="LineNr">215 </span> <span class="PreProc">var</span> left/<span class="Constant">eax</span>: (addr grapheme-stack) <span class="SpecialChar"><-</span> <a href='../../131table.subx.html#L26'>get</a> self, left
<span id="L216" class="LineNr">216 </span> <span class="PreProc">var</span> dummy/<span class="Constant">eax</span>: grapheme <span class="SpecialChar"><-</span> pop-grapheme-stack left
<span id="L217" class="LineNr">217 </span><span class="Delimiter">}</span>
<span id="L218" class="LineNr">218 </span>
<span id="L219" class="LineNr">219 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='gap-buffer.mu.html#L219'>gap-buffer-equal?</a></span> _self: (addr <a href='gap-buffer.mu.html#L1'>gap-buffer</a>), s: (addr array byte)<span class="PreProc"> -> </span>result/<span class="Constant">eax</span>: boolean <span class="Delimiter">{</span>
<span id="L220" class="LineNr">220 </span>$gap-buffer-equal?:body: <span class="Delimiter">{</span>
<span id="L221" class="LineNr">221 </span> <span class="PreProc">var</span> self/<span class="Constant">esi</span>: (addr <a href='gap-buffer.mu.html#L1'>gap-buffer</a>) <span class="SpecialChar"><-</span> copy _self
<span id="L222" class="LineNr">222 </span> <span class="muComment"># complication: graphemes may be multiple bytes</span>
<span id="L223" class="LineNr">223 </span> <span class="muComment"># so don't rely on length</span>
<span id="L224" class="LineNr">224 </span> <span class="muComment"># instead turn the expected result into a stream and arrange to read from it in order</span>
<span id="L225" class="LineNr">225 </span> <span class="PreProc">var</span> stream-storage: (stream byte <span class="Constant">0x10</span>) <span class="muComment"># max-word-size</span>
<span id="L226" class="LineNr">226 </span> <span class="PreProc">var</span> expected-stream/<span class="Constant">ecx</span>: (addr stream byte) <span class="SpecialChar"><-</span> address stream-storage
<span id="L227" class="LineNr">227 </span> <a href='../../108write.subx.html#L24'>write</a> expected-stream, s
<span id="L228" class="LineNr">228 </span> <span class="muComment"># compare left</span>
<span id="L229" class="LineNr">229 </span> <span class="PreProc">var</span> left/<span class="Constant">edx</span>: (addr grapheme-stack) <span class="SpecialChar"><-</span> <a href='../../131table.subx.html#L26'>get</a> self, left
<span id="L230" class="LineNr">230 </span> result <span class="SpecialChar"><-</span> prefix-match? left, expected-stream
<span id="L231" class="LineNr">231 </span> compare result, <span class="Constant">0</span> <span class="muComment"># false</span>
<span id="L232" class="LineNr">232 </span> <span class="PreProc">break-if-=</span> $gap-buffer-equal?:body
<span id="L233" class="LineNr">233 </span> <span class="muComment"># compare right</span>
<span id="L234" class="LineNr">234 </span> <span class="PreProc">var</span> right/<span class="Constant">edx</span>: (addr grapheme-stack) <span class="SpecialChar"><-</span> <a href='../../131table.subx.html#L26'>get</a> self, right
<span id="L235" class="LineNr">235 </span> result <span class="SpecialChar"><-</span> suffix-match? right, expected-stream
<span id="L236" class="LineNr">236 </span> compare result, <span class="Constant">0</span> <span class="muComment"># false</span>
<span id="L237" class="LineNr">237 </span> <span class="PreProc">break-if-=</span> $gap-buffer-equal?:body
<span id="L238" class="LineNr">238 </span> <span class="muComment"># ensure there's nothing left over</span>
<span id="L239" class="LineNr">239 </span> result <span class="SpecialChar"><-</span> <a href='../../309stream.subx.html#L6'>stream-empty?</a> expected-stream
<span id="L240" class="LineNr">240 </span><span class="Delimiter">}</span>
<span id="L241" class="LineNr">241 </span><span class="Delimiter">}</span>
<span id="L242" class="LineNr">242 </span>
<span id="L243" class="LineNr">243 </span><span class="PreProc">fn</span> <span class="muTest"><a href='gap-buffer.mu.html#L243'>test-gap-buffer-equal-from-end?</a></span> <span class="Delimiter">{</span>
<span id="L244" class="LineNr">244 </span> <span class="PreProc">var</span> _g: <a href='gap-buffer.mu.html#L1'>gap-buffer</a>
<span id="L245" class="LineNr">245 </span> <span class="PreProc">var</span> g/<span class="Constant">esi</span>: (addr <a href='gap-buffer.mu.html#L1'>gap-buffer</a>) <span class="SpecialChar"><-</span> address _g
<span id="L246" class="LineNr">246 </span> <a href='gap-buffer.mu.html#L6'>initialize-gap-buffer</a> g
<span id="L247" class="LineNr">247 </span> <span class="muComment">#</span>
<span id="L248" class="LineNr">248 </span> <span class="PreProc">var</span> c/<span class="Constant">eax</span>: grapheme <span class="SpecialChar"><-</span> copy <span class="Constant">0x61</span> <span class="muComment"># 'a'</span>
<span id="L249" class="LineNr">249 </span> <a href='gap-buffer.mu.html#L102'>add-grapheme-at-gap</a> g, c
<span id="L250" class="LineNr">250 </span> <a href='gap-buffer.mu.html#L102'>add-grapheme-at-gap</a> g, c
<span id="L251" class="LineNr">251 </span> <a href='gap-buffer.mu.html#L102'>add-grapheme-at-gap</a> g, c
<span id="L252" class="LineNr">252 </span> <span class="muComment"># gap is at end (right is empty)</span>
<span id="L253" class="LineNr">253 </span> <span class="PreProc">var</span> _result/<span class="Constant">eax</span>: boolean <span class="SpecialChar"><-</span> <a href='gap-buffer.mu.html#L219'>gap-buffer-equal?</a> g, <span class="Constant">"aaa"</span>
<span id="L254" class="LineNr">254 </span> <span class="PreProc">var</span> result/<span class="Constant">eax</span>: int <span class="SpecialChar"><-</span> copy _result
<span id="L255" class="LineNr">255 </span> <a href='../../102test.subx.html#L23'>check-ints-equal</a> result, <span class="Constant">1</span>, <span class="Constant">"F - test-gap-buffer-equal-from-end?"</span>
<span id="L256" class="LineNr">256 </span><span class="Delimiter">}</span>
<span id="L257" class="LineNr">257 </span>
<span id="L258" class="LineNr">258 </span><span class="PreProc">fn</span> <span class="muTest"><a href='gap-buffer.mu.html#L258'>test-gap-buffer-equal-from-middle?</a></span> <span class="Delimiter">{</span>
<span id="L259" class="LineNr">259 </span> <span class="PreProc">var</span> _g: <a href='gap-buffer.mu.html#L1'>gap-buffer</a>
<span id="L260" class="LineNr">260 </span> <span class="PreProc">var</span> g/<span class="Constant">esi</span>: (addr <a href='gap-buffer.mu.html#L1'>gap-buffer</a>) <span class="SpecialChar"><-</span> address _g
<span id="L261" class="LineNr">261 </span> <a href='gap-buffer.mu.html#L6'>initialize-gap-buffer</a> g
<span id="L262" class="LineNr">262 </span> <span class="muComment">#</span>
<span id="L263" class="LineNr">263 </span> <span class="PreProc">var</span> c/<span class="Constant">eax</span>: grapheme <span class="SpecialChar"><-</span> copy <span class="Constant">0x61</span> <span class="muComment"># 'a'</span>
<span id="L264" class="LineNr">264 </span> <a href='gap-buffer.mu.html#L102'>add-grapheme-at-gap</a> g, c
<span id="L265" class="LineNr">265 </span> <a href='gap-buffer.mu.html#L102'>add-grapheme-at-gap</a> g, c
<span id="L266" class="LineNr">266 </span> <a href='gap-buffer.mu.html#L102'>add-grapheme-at-gap</a> g, c
<span id="L267" class="LineNr">267 </span> <span class="PreProc">var</span> dummy/<span class="Constant">eax</span>: grapheme <span class="SpecialChar"><-</span> <a href='gap-buffer.mu.html#L154'>gap-left</a> g
<span id="L268" class="LineNr">268 </span> <span class="muComment"># gap is in the middle</span>
<span id="L269" class="LineNr">269 </span> <span class="PreProc">var</span> _result/<span class="Constant">eax</span>: boolean <span class="SpecialChar"><-</span> <a href='gap-buffer.mu.html#L219'>gap-buffer-equal?</a> g, <span class="Constant">"aaa"</span>
<span id="L270" class="LineNr">270 </span> <span class="PreProc">var</span> result/<span class="Constant">eax</span>: int <span class="SpecialChar"><-</span> copy _result
<span id="L271" class="LineNr">271 </span> <a href='../../102test.subx.html#L23'>check-ints-equal</a> result, <span class="Constant">1</span>, <span class="Constant">"F - test-gap-buffer-equal-from-middle?"</span>
<span id="L272" class="LineNr">272 </span><span class="Delimiter">}</span>
<span id="L273" class="LineNr">273 </span>
<span id="L274" class="LineNr">274 </span><span class="PreProc">fn</span> <span class="muTest"><a href='gap-buffer.mu.html#L274'>test-gap-buffer-equal-from-start?</a></span> <span class="Delimiter">{</span>
<span id="L275" class="LineNr">275 </span> <span class="PreProc">var</span> _g: <a href='gap-buffer.mu.html#L1'>gap-buffer</a>
<span id="L276" class="LineNr">276 </span> <span class="PreProc">var</span> g/<span class="Constant">esi</span>: (addr <a href='gap-buffer.mu.html#L1'>gap-buffer</a>) <span class="SpecialChar"><-</span> address _g
<span id="L277" class="LineNr">277 </span> <a href='gap-buffer.mu.html#L6'>initialize-gap-buffer</a> g
<span id="L278" class="LineNr">278 </span> <span class="muComment">#</span>
<span id="L279" class="LineNr">279 </span> <span class="PreProc">var</span> c/<span class="Constant">eax</span>: grapheme <span class="SpecialChar"><-</span> copy <span class="Constant">0x61</span> <span class="muComment"># 'a'</span>
<span id="L280" class="LineNr">280 </span> <a href='gap-buffer.mu.html#L102'>add-grapheme-at-gap</a> g, c
<span id="L281" class="LineNr">281 </span> <a href='gap-buffer.mu.html#L102'>add-grapheme-at-gap</a> g, c
<span id="L282" class="LineNr">282 </span> <a href='gap-buffer.mu.html#L102'>add-grapheme-at-gap</a> g, c
<span id="L283" class="LineNr">283 </span> <span class="PreProc">var</span> dummy/<span class="Constant">eax</span>: grapheme <span class="SpecialChar"><-</span> <a href='gap-buffer.mu.html#L154'>gap-left</a> g
<span id="L284" class="LineNr">284 </span> dummy <span class="SpecialChar"><-</span> <a href='gap-buffer.mu.html#L154'>gap-left</a> g
<span id="L285" class="LineNr">285 </span> dummy <span class="SpecialChar"><-</span> <a href='gap-buffer.mu.html#L154'>gap-left</a> g
<span id="L286" class="LineNr">286 </span> <span class="muComment"># gap is at the start</span>
<span id="L287" class="LineNr">287 </span> <span class="PreProc">var</span> _result/<span class="Constant">eax</span>: boolean <span class="SpecialChar"><-</span> <a href='gap-buffer.mu.html#L219'>gap-buffer-equal?</a> g, <span class="Constant">"aaa"</span>
<span id="L288" class="LineNr">288 </span> <span class="PreProc">var</span> result/<span class="Constant">eax</span>: int <span class="SpecialChar"><-</span> copy _result
<span id="L289" class="LineNr">289 </span> <a href='../../102test.subx.html#L23'>check-ints-equal</a> result, <span class="Constant">1</span>, <span class="Constant">"F - test-gap-buffer-equal-from-start?"</span>
<span id="L290" class="LineNr">290 </span><span class="Delimiter">}</span>
</pre>
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