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| author | Kartik K. Agaram <vc@akkartik.com> | 2016-07-05 01:08:00 -0700 |
|---|---|---|
| committer | Kartik K. Agaram <vc@akkartik.com> | 2016-07-05 01:08:00 -0700 |
| commit | 298f8065857630e414d84e4ee785a6d17e5f99bb (patch) | |
| tree | 8880a092ab59850a6f821ba892f3904ab464431c /html/061text.mu.html | |
| parent | f28f2636c6707e1a33bebacafd0486f4965978ea (diff) | |
| download | mu-298f8065857630e414d84e4ee785a6d17e5f99bb.tar.gz | |
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Diffstat (limited to 'html/061text.mu.html')
| -rw-r--r-- | html/061text.mu.html | 1307 |
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diff --git a/html/061text.mu.html b/html/061text.mu.html new file mode 100644 index 00000000..84c7c349 --- /dev/null +++ b/html/061text.mu.html @@ -0,0 +1,1307 @@ +<!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 - 061text.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; } +.muScenario { color: #00af00; } +.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"># Some useful helpers for dealing with text (arrays of characters)</span> + +<span class="Comment"># to-text-line gets called implicitly in various places</span> +<span class="Comment"># define it to be identical to 'to-text' by default</span> +<span class="muRecipe">def</span> to-text-line x:_elem<span class="muRecipe"> -> </span>y:address:array:character [ + <span class="Constant">local-scope</span> + <span class="Constant">load-ingredients</span> + y<span class="Special"> <- </span>to-text x +] + +<span class="Comment"># variant for arrays (since we can't pass them around otherwise)</span> +<span class="muRecipe">def</span> array-to-text-line x:address:array:_elem<span class="muRecipe"> -> </span>y:address:array:character [ + <span class="Constant">local-scope</span> + <span class="Constant">load-ingredients</span> + y<span class="Special"> <- </span>to-text *x +] + +<span class="muRecipe">def</span> equal a:address:array:character, b:address:array:character<span class="muRecipe"> -> </span>result:boolean [ + <span class="Constant">local-scope</span> + <span class="Constant">load-ingredients</span> + a-len:number<span class="Special"> <- </span>length *a + b-len:number<span class="Special"> <- </span>length *b + <span class="Comment"># compare lengths</span> + <span class="Delimiter">{</span> + trace <span class="Constant">99</span>, <span class="Constant">[text-equal]</span>, <span class="Constant">[comparing lengths]</span> + length-equal?:boolean<span class="Special"> <- </span>equal a-len, b-len + <span class="muControl">break-if</span> length-equal? + <span class="muControl">return</span> <span class="Constant">0</span> + <span class="Delimiter">}</span> + <span class="Comment"># compare each corresponding character</span> + trace <span class="Constant">99</span>, <span class="Constant">[text-equal]</span>, <span class="Constant">[comparing characters]</span> + i:number<span class="Special"> <- </span>copy <span class="Constant">0</span> + <span class="Delimiter">{</span> + done?:boolean<span class="Special"> <- </span>greater-or-equal i, a-len + <span class="muControl">break-if</span> done? + a2:character<span class="Special"> <- </span>index *a, i + b2:character<span class="Special"> <- </span>index *b, i + <span class="Delimiter">{</span> + chars-match?:boolean<span class="Special"> <- </span>equal a2, b2 + <span class="muControl">break-if</span> chars-match? + <span class="muControl">return</span> <span class="Constant">0</span> + <span class="Delimiter">}</span> + i<span class="Special"> <- </span>add i, <span class="Constant">1</span> + <span class="muControl">loop</span> + <span class="Delimiter">}</span> + <span class="muControl">return</span> <span class="Constant">1</span> +] + +<span class="muScenario">scenario</span> text-equal-reflexive [ + run [ + <span class="Constant">local-scope</span> + x:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc]</span> + <span class="Constant">10</span>:boolean/<span class="Special">raw <- </span>equal x, x + ] + memory-should-contain [ + <span class="Constant">10</span><span class="Special"> <- </span><span class="Constant">1</span> <span class="Comment"># x == x for all x</span> + ] +] + +<span class="muScenario">scenario</span> text-equal-identical [ + run [ + <span class="Constant">local-scope</span> + x:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc]</span> + y:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc]</span> + <span class="Constant">10</span>:boolean/<span class="Special">raw <- </span>equal x, y + ] + memory-should-contain [ + <span class="Constant">10</span><span class="Special"> <- </span><span class="Constant">1</span> <span class="Comment"># abc == abc</span> + ] +] + +<span class="muScenario">scenario</span> text-equal-distinct-lengths [ + run [ + <span class="Constant">local-scope</span> + x:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc]</span> + y:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abcd]</span> + <span class="Constant">10</span>:boolean/<span class="Special">raw <- </span>equal x, y + ] + memory-should-contain [ + <span class="Constant">10</span><span class="Special"> <- </span><span class="Constant">0</span> <span class="Comment"># abc != abcd</span> + ] + trace-should-contain [ + text-equal: comparing lengths + ] + trace-should-not-contain [ + text-equal: comparing characters + ] +] + +<span class="muScenario">scenario</span> text-equal-with-empty [ + run [ + <span class="Constant">local-scope</span> + x:address:array:character<span class="Special"> <- </span>new <span class="Constant">[]</span> + y:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abcd]</span> + <span class="Constant">10</span>:boolean/<span class="Special">raw <- </span>equal x, y + ] + memory-should-contain [ + <span class="Constant">10</span><span class="Special"> <- </span><span class="Constant">0</span> <span class="Comment"># "" != abcd</span> + ] +] + +<span class="muScenario">scenario</span> text-equal-common-lengths-but-distinct [ + run [ + <span class="Constant">local-scope</span> + x:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc]</span> + y:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abd]</span> + <span class="Constant">10</span>:boolean/<span class="Special">raw <- </span>equal x, y + ] + memory-should-contain [ + <span class="Constant">10</span><span class="Special"> <- </span><span class="Constant">0</span> <span class="Comment"># abc != abd</span> + ] +] + +<span class="Comment"># A new type to help incrementally construct texts.</span> +<span class="muData">container</span> buffer [ + length:number + data:address:array:character +] + +<span class="muRecipe">def</span> new-buffer capacity:number<span class="muRecipe"> -> </span>result:address:buffer [ + <span class="Constant">local-scope</span> + <span class="Constant">load-ingredients</span> + result<span class="Special"> <- </span>new <span class="Constant">buffer:type</span> + *result<span class="Special"> <- </span>put *result, <span class="Constant">length:offset</span>, <span class="Constant">0</span> + data:address:array:character<span class="Special"> <- </span>new <span class="Constant">character:type</span>, capacity + *result<span class="Special"> <- </span>put *result, <span class="Constant">data:offset</span>, data + <span class="muControl">return</span> result +] + +<span class="muRecipe">def</span> grow-buffer in:address:buffer<span class="muRecipe"> -> </span>in:address:buffer [ + <span class="Constant">local-scope</span> + <span class="Constant">load-ingredients</span> + <span class="Comment"># double buffer size</span> + olddata:address:array:character<span class="Special"> <- </span>get *in, <span class="Constant">data:offset</span> + oldlen:number<span class="Special"> <- </span>length *olddata + newlen:number<span class="Special"> <- </span>multiply oldlen, <span class="Constant">2</span> + newdata:address:array:character<span class="Special"> <- </span>new <span class="Constant">character:type</span>, newlen + *in<span class="Special"> <- </span>put *in, <span class="Constant">data:offset</span>, newdata + <span class="Comment"># copy old contents</span> + i:number<span class="Special"> <- </span>copy <span class="Constant">0</span> + <span class="Delimiter">{</span> + done?:boolean<span class="Special"> <- </span>greater-or-equal i, oldlen + <span class="muControl">break-if</span> done? + src:character<span class="Special"> <- </span>index *olddata, i + *newdata<span class="Special"> <- </span>put-index *newdata, i, src + i<span class="Special"> <- </span>add i, <span class="Constant">1</span> + <span class="muControl">loop</span> + <span class="Delimiter">}</span> +] + +<span class="muRecipe">def</span> buffer-full? in:address:buffer<span class="muRecipe"> -> </span>result:boolean [ + <span class="Constant">local-scope</span> + <span class="Constant">load-ingredients</span> + len:number<span class="Special"> <- </span>get *in, <span class="Constant">length:offset</span> + s:address:array:character<span class="Special"> <- </span>get *in, <span class="Constant">data:offset</span> + capacity:number<span class="Special"> <- </span>length *s + result<span class="Special"> <- </span>greater-or-equal len, capacity +] + +<span class="Comment"># most broadly applicable definition of append to a buffer: just call to-text</span> +<span class="muRecipe">def</span> append buf:address:buffer, x:_elem<span class="muRecipe"> -> </span>buf:address:buffer [ + <span class="Constant">local-scope</span> + <span class="Constant">load-ingredients</span> + text:address:array:character<span class="Special"> <- </span>to-text x + len:number<span class="Special"> <- </span>length *text + i:number<span class="Special"> <- </span>copy <span class="Constant">0</span> + <span class="Delimiter">{</span> + done?:boolean<span class="Special"> <- </span>greater-or-equal i, len + <span class="muControl">break-if</span> done? + c:character<span class="Special"> <- </span>index *text, i + buf<span class="Special"> <- </span>append buf, c + i<span class="Special"> <- </span>add i, <span class="Constant">1</span> + <span class="muControl">loop</span> + <span class="Delimiter">}</span> +] + +<span class="muRecipe">def</span> append in:address:buffer, c:character<span class="muRecipe"> -> </span>in:address:buffer [ + <span class="Constant">local-scope</span> + <span class="Constant">load-ingredients</span> + len:number<span class="Special"> <- </span>get *in, <span class="Constant">length:offset</span> + <span class="Delimiter">{</span> + <span class="Comment"># backspace? just drop last character if it exists and return</span> + backspace?:boolean<span class="Special"> <- </span>equal c, <span class="Constant">8/backspace</span> + <span class="muControl">break-unless</span> backspace? + empty?:boolean<span class="Special"> <- </span>lesser-or-equal len, <span class="Constant">0</span> + <span class="muControl">return-if</span> empty? + len<span class="Special"> <- </span>subtract len, <span class="Constant">1</span> + *in<span class="Special"> <- </span>put *in, <span class="Constant">length:offset</span>, len + <span class="muControl">return</span> + <span class="Delimiter">}</span> + <span class="Delimiter">{</span> + <span class="Comment"># grow buffer if necessary</span> + full?:boolean<span class="Special"> <- </span>buffer-full? in + <span class="muControl">break-unless</span> full? + in<span class="Special"> <- </span>grow-buffer in + <span class="Delimiter">}</span> + s:address:array:character<span class="Special"> <- </span>get *in, <span class="Constant">data:offset</span> + *s<span class="Special"> <- </span>put-index *s, len, c + len<span class="Special"> <- </span>add len, <span class="Constant">1</span> + *in<span class="Special"> <- </span>put *in, <span class="Constant">length:offset</span>, len +] + +<span class="muScenario">scenario</span> buffer-append-works [ + run [ + <span class="Constant">local-scope</span> + x:address:buffer<span class="Special"> <- </span>new-buffer <span class="Constant">3</span> + s1:address:array:character<span class="Special"> <- </span>get *x, <span class="Constant">data:offset</span> + c:character<span class="Special"> <- </span>copy <span class="Constant">97/a</span> + x<span class="Special"> <- </span>append x, c + c:character<span class="Special"> <- </span>copy <span class="Constant">98/b</span> + x<span class="Special"> <- </span>append x, c + c:character<span class="Special"> <- </span>copy <span class="Constant">99/c</span> + x<span class="Special"> <- </span>append x, c + s2:address:array:character<span class="Special"> <- </span>get *x, <span class="Constant">data:offset</span> + <span class="Constant">10</span>:boolean/<span class="Special">raw <- </span>equal s1, s2 + <span class="Constant">11</span>:array:character/<span class="Special">raw <- </span>copy *s2 +<span class="Constant"> +buffer-filled</span> + c:character<span class="Special"> <- </span>copy <span class="Constant">100/d</span> + x<span class="Special"> <- </span>append x, c + s3:address:array:character<span class="Special"> <- </span>get *x, <span class="Constant">data:offset</span> + <span class="Constant">20</span>:boolean/<span class="Special">raw <- </span>equal s1, s3 + <span class="Constant">21</span>:number/<span class="Special">raw <- </span>get *x, <span class="Constant">length:offset</span> + <span class="Constant">30</span>:array:character/<span class="Special">raw <- </span>copy *s3 + ] + memory-should-contain [ + <span class="Comment"># before +buffer-filled</span> + <span class="Constant">10</span><span class="Special"> <- </span><span class="Constant">1</span> <span class="Comment"># no change in data pointer</span> + <span class="Constant">11</span><span class="Special"> <- </span><span class="Constant">3</span> <span class="Comment"># size of data</span> + <span class="Constant">12</span><span class="Special"> <- </span><span class="Constant">97</span> <span class="Comment"># data</span> + <span class="Constant">13</span><span class="Special"> <- </span><span class="Constant">98</span> + <span class="Constant">14</span><span class="Special"> <- </span><span class="Constant">99</span> + <span class="Comment"># in the end</span> + <span class="Constant">20</span><span class="Special"> <- </span><span class="Constant">0</span> <span class="Comment"># data pointer has grown</span> + <span class="Constant">21</span><span class="Special"> <- </span><span class="Constant">4</span> <span class="Comment"># final length</span> + <span class="Constant">30</span><span class="Special"> <- </span><span class="Constant">6</span> <span class="Comment"># but data's capacity has doubled</span> + <span class="Constant">31</span><span class="Special"> <- </span><span class="Constant">97</span> <span class="Comment"># data</span> + <span class="Constant">32</span><span class="Special"> <- </span><span class="Constant">98</span> + <span class="Constant">33</span><span class="Special"> <- </span><span class="Constant">99</span> + <span class="Constant">34</span><span class="Special"> <- </span><span class="Constant">100</span> + <span class="Constant">35</span><span class="Special"> <- </span><span class="Constant">0</span> + <span class="Constant">36</span><span class="Special"> <- </span><span class="Constant">0</span> + ] +] + +<span class="muScenario">scenario</span> buffer-append-handles-backspace [ + run [ + <span class="Constant">local-scope</span> + x:address:buffer<span class="Special"> <- </span>new-buffer <span class="Constant">3</span> + c:character<span class="Special"> <- </span>copy <span class="Constant">97/a</span> + x<span class="Special"> <- </span>append x, c + c:character<span class="Special"> <- </span>copy <span class="Constant">98/b</span> + x<span class="Special"> <- </span>append x, c + c:character<span class="Special"> <- </span>copy <span class="Constant">8/backspace</span> + x<span class="Special"> <- </span>append x, c + s:address:array:character<span class="Special"> <- </span>buffer-to-array x + <span class="Constant">10</span>:array:character/<span class="Special">raw <- </span>copy *s + ] + memory-should-contain [ + <span class="Constant">10</span><span class="Special"> <- </span><span class="Constant">1</span> <span class="Comment"># length</span> + <span class="Constant">11</span><span class="Special"> <- </span><span class="Constant">97</span> <span class="Comment"># contents</span> + <span class="Constant">12</span><span class="Special"> <- </span><span class="Constant">0</span> + ] +] + +<span class="muRecipe">def</span> buffer-to-array in:address:buffer<span class="muRecipe"> -> </span>result:address:array:character [ + <span class="Constant">local-scope</span> + <span class="Constant">load-ingredients</span> + <span class="Delimiter">{</span> + <span class="Comment"># propagate null buffer</span> + <span class="muControl">break-if</span> in + <span class="muControl">return</span> <span class="Constant">0</span> + <span class="Delimiter">}</span> + len:number<span class="Special"> <- </span>get *in, <span class="Constant">length:offset</span> + s:address:array:character<span class="Special"> <- </span>get *in, <span class="Constant">data:offset</span> + <span class="Comment"># we can't just return s because it is usually the wrong length</span> + result<span class="Special"> <- </span>new <span class="Constant">character:type</span>, len + i:number<span class="Special"> <- </span>copy <span class="Constant">0</span> + <span class="Delimiter">{</span> + done?:boolean<span class="Special"> <- </span>greater-or-equal i, len + <span class="muControl">break-if</span> done? + src:character<span class="Special"> <- </span>index *s, i + *result<span class="Special"> <- </span>put-index *result, i, src + i<span class="Special"> <- </span>add i, <span class="Constant">1</span> + <span class="muControl">loop</span> + <span class="Delimiter">}</span> +] + +<span class="muRecipe">def</span> append a:address:array:character, b:address:array:character<span class="muRecipe"> -> </span>result:address:array:character [ + <span class="Constant">local-scope</span> + <span class="Constant">load-ingredients</span> + <span class="Comment"># handle null addresses</span> + <span class="muControl">reply-unless</span> a, b + <span class="muControl">reply-unless</span> b, a + <span class="Comment"># result = new character[a.length + b.length]</span> + a-len:number<span class="Special"> <- </span>length *a + b-len:number<span class="Special"> <- </span>length *b + result-len:number<span class="Special"> <- </span>add a-len, b-len + result<span class="Special"> <- </span>new <span class="Constant">character:type</span>, result-len + <span class="Comment"># copy a into result</span> + result-idx:number<span class="Special"> <- </span>copy <span class="Constant">0</span> + i:number<span class="Special"> <- </span>copy <span class="Constant">0</span> + <span class="Delimiter">{</span> + <span class="Comment"># while i < a.length</span> + a-done?:boolean<span class="Special"> <- </span>greater-or-equal i, a-len + <span class="muControl">break-if</span> a-done? + <span class="Comment"># result[result-idx] = a[i]</span> + in:character<span class="Special"> <- </span>index *a, i + *result<span class="Special"> <- </span>put-index *result, result-idx, in + i<span class="Special"> <- </span>add i, <span class="Constant">1</span> + result-idx<span class="Special"> <- </span>add result-idx, <span class="Constant">1</span> + <span class="muControl">loop</span> + <span class="Delimiter">}</span> + <span class="Comment"># copy b into result</span> + i<span class="Special"> <- </span>copy <span class="Constant">0</span> + <span class="Delimiter">{</span> + <span class="Comment"># while i < b.length</span> + b-done?:boolean<span class="Special"> <- </span>greater-or-equal i, b-len + <span class="muControl">break-if</span> b-done? + <span class="Comment"># result[result-idx] = a[i]</span> + in:character<span class="Special"> <- </span>index *b, i + *result<span class="Special"> <- </span>put-index *result, result-idx, in + i<span class="Special"> <- </span>add i, <span class="Constant">1</span> + result-idx<span class="Special"> <- </span>add result-idx, <span class="Constant">1</span> + <span class="muControl">loop</span> + <span class="Delimiter">}</span> +] + +<span class="muScenario">scenario</span> text-append-1 [ + run [ + <span class="Constant">local-scope</span> + x:address:array:character<span class="Special"> <- </span>new <span class="Constant">[hello,]</span> + y:address:array:character<span class="Special"> <- </span>new <span class="Constant">[ world!]</span> + z:address:array:character<span class="Special"> <- </span>append x, y + <span class="Constant">10</span>:array:character/<span class="Special">raw <- </span>copy *z + ] + memory-should-contain [ + <span class="Constant">10</span>:array:character<span class="Special"> <- </span><span class="Constant">[hello, world!]</span> + ] +] + +<span class="muScenario">scenario</span> text-append-null [ + run [ + <span class="Constant">local-scope</span> + x:address:array:character<span class="Special"> <- </span>copy <span class="Constant">0</span> + y:address:array:character<span class="Special"> <- </span>new <span class="Constant">[ world!]</span> + z:address:array:character<span class="Special"> <- </span>append x, y + <span class="Constant">10</span>:array:character/<span class="Special">raw <- </span>copy *z + ] + memory-should-contain [ + <span class="Constant">10</span>:array:character<span class="Special"> <- </span><span class="Constant">[ world!]</span> + ] +] + +<span class="muScenario">scenario</span> text-append-null-2 [ + run [ + <span class="Constant">local-scope</span> + x:address:array:character<span class="Special"> <- </span>new <span class="Constant">[hello,]</span> + y:address:array:character<span class="Special"> <- </span>copy <span class="Constant">0</span> + z:address:array:character<span class="Special"> <- </span>append x, y + <span class="Constant">10</span>:array:character/<span class="Special">raw <- </span>copy *z + ] + memory-should-contain [ + <span class="Constant">10</span>:array:character<span class="Special"> <- </span><span class="Constant">[hello,]</span> + ] +] + +<span class="muScenario">scenario</span> replace-character-in-text [ + run [ + <span class="Constant">local-scope</span> + x:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc]</span> + x<span class="Special"> <- </span>replace x, <span class="Constant">98/b</span>, <span class="Constant">122/z</span> + <span class="Constant">10</span>:array:character/<span class="Special">raw <- </span>copy *x + ] + memory-should-contain [ + <span class="Constant">10</span>:array:character<span class="Special"> <- </span><span class="Constant">[azc]</span> + ] +] + +<span class="muRecipe">def</span> replace s:address:array:character, oldc:character, newc:character, from:number/optional<span class="muRecipe"> -> </span>s:address:array:character [ + <span class="Constant">local-scope</span> + <span class="Constant">load-ingredients</span> + len:number<span class="Special"> <- </span>length *s + i:number<span class="Special"> <- </span>find-next s, oldc, from + done?:boolean<span class="Special"> <- </span>greater-or-equal i, len + <span class="muControl">return-if</span> done?, s/same-as-ingredient:<span class="Constant">0</span> + *s<span class="Special"> <- </span>put-index *s, i, newc + i<span class="Special"> <- </span>add i, <span class="Constant">1</span> + s<span class="Special"> <- </span>replace s, oldc, newc, i +] + +<span class="muScenario">scenario</span> replace-character-at-start [ + run [ + <span class="Constant">local-scope</span> + x:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc]</span> + x<span class="Special"> <- </span>replace x, <span class="Constant">97/a</span>, <span class="Constant">122/z</span> + <span class="Constant">10</span>:array:character/<span class="Special">raw <- </span>copy *x + ] + memory-should-contain [ + <span class="Constant">10</span>:array:character<span class="Special"> <- </span><span class="Constant">[zbc]</span> + ] +] + +<span class="muScenario">scenario</span> replace-character-at-end [ + run [ + <span class="Constant">local-scope</span> + x:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc]</span> + x<span class="Special"> <- </span>replace x, <span class="Constant">99/c</span>, <span class="Constant">122/z</span> + <span class="Constant">10</span>:array:character/<span class="Special">raw <- </span>copy *x + ] + memory-should-contain [ + <span class="Constant">10</span>:array:character<span class="Special"> <- </span><span class="Constant">[abz]</span> + ] +] + +<span class="muScenario">scenario</span> replace-character-missing [ + run [ + <span class="Constant">local-scope</span> + x:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc]</span> + x<span class="Special"> <- </span>replace x, <span class="Constant">100/d</span>, <span class="Constant">122/z</span> + <span class="Constant">10</span>:array:character/<span class="Special">raw <- </span>copy *x + ] + memory-should-contain [ + <span class="Constant">10</span>:array:character<span class="Special"> <- </span><span class="Constant">[abc]</span> + ] +] + +<span class="muScenario">scenario</span> replace-all-characters [ + run [ + <span class="Constant">local-scope</span> + x:address:array:character<span class="Special"> <- </span>new <span class="Constant">[banana]</span> + x<span class="Special"> <- </span>replace x, <span class="Constant">97/a</span>, <span class="Constant">122/z</span> + <span class="Constant">10</span>:array:character/<span class="Special">raw <- </span>copy *x + ] + memory-should-contain [ + <span class="Constant">10</span>:array:character<span class="Special"> <- </span><span class="Constant">[bznznz]</span> + ] +] + +<span class="Comment"># replace underscores in first with remaining args</span> +<span class="muRecipe">def</span> interpolate template:address:array:character<span class="muRecipe"> -> </span>result:address:array:character [ + <span class="Constant">local-scope</span> + <span class="Constant">load-ingredients</span> <span class="Comment"># consume just the template</span> + <span class="Comment"># compute result-len, space to allocate for result</span> + tem-len:number<span class="Special"> <- </span>length *template + result-len:number<span class="Special"> <- </span>copy tem-len + <span class="Delimiter">{</span> + <span class="Comment"># while ingredients remain</span> + a:address:array:character, arg-received?:boolean<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + <span class="muControl">break-unless</span> arg-received? + <span class="Comment"># result-len = result-len + arg.length - 1 (for the 'underscore' being replaced)</span> + a-len:number<span class="Special"> <- </span>length *a + result-len<span class="Special"> <- </span>add result-len, a-len + result-len<span class="Special"> <- </span>subtract result-len, <span class="Constant">1</span> + <span class="muControl">loop</span> + <span class="Delimiter">}</span> + <span class="Constant">rewind-ingredients</span> + _<span class="Special"> <- </span><span class="Constant">next-ingredient</span> <span class="Comment"># skip template</span> + result<span class="Special"> <- </span>new <span class="Constant">character:type</span>, result-len + <span class="Comment"># repeatedly copy sections of template and 'holes' into result</span> + result-idx:number<span class="Special"> <- </span>copy <span class="Constant">0</span> + i:number<span class="Special"> <- </span>copy <span class="Constant">0</span> + <span class="Delimiter">{</span> + <span class="Comment"># while arg received</span> + a:address:array:character, arg-received?:boolean<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + <span class="muControl">break-unless</span> arg-received? + <span class="Comment"># copy template into result until '_'</span> + <span class="Delimiter">{</span> + <span class="Comment"># while i < template.length</span> + tem-done?:boolean<span class="Special"> <- </span>greater-or-equal i, tem-len + <span class="muControl">break-if</span> tem-done?, <span class="Constant">+done:label</span> + <span class="Comment"># while template[i] != '_'</span> + in:character<span class="Special"> <- </span>index *template, i + underscore?:boolean<span class="Special"> <- </span>equal in, <span class="Constant">95/_</span> + <span class="muControl">break-if</span> underscore? + <span class="Comment"># result[result-idx] = template[i]</span> + *result<span class="Special"> <- </span>put-index *result, result-idx, in + i<span class="Special"> <- </span>add i, <span class="Constant">1</span> + result-idx<span class="Special"> <- </span>add result-idx, <span class="Constant">1</span> + <span class="muControl">loop</span> + <span class="Delimiter">}</span> + <span class="Comment"># copy 'a' into result</span> + j:number<span class="Special"> <- </span>copy <span class="Constant">0</span> + <span class="Delimiter">{</span> + <span class="Comment"># while j < a.length</span> + arg-done?:boolean<span class="Special"> <- </span>greater-or-equal j, a-len + <span class="muControl">break-if</span> arg-done? + <span class="Comment"># result[result-idx] = a[j]</span> + in:character<span class="Special"> <- </span>index *a, j + *result<span class="Special"> <- </span>put-index *result, result-idx, in + j<span class="Special"> <- </span>add j, <span class="Constant">1</span> + result-idx<span class="Special"> <- </span>add result-idx, <span class="Constant">1</span> + <span class="muControl">loop</span> + <span class="Delimiter">}</span> + <span class="Comment"># skip '_' in template</span> + i<span class="Special"> <- </span>add i, <span class="Constant">1</span> + <span class="muControl">loop</span> <span class="Comment"># interpolate next arg</span> + <span class="Delimiter">}</span> +<span class="Constant"> +done</span> + <span class="Comment"># done with holes; copy rest of template directly into result</span> + <span class="Delimiter">{</span> + <span class="Comment"># while i < template.length</span> + tem-done?:boolean<span class="Special"> <- </span>greater-or-equal i, tem-len + <span class="muControl">break-if</span> tem-done? + <span class="Comment"># result[result-idx] = template[i]</span> + in:character<span class="Special"> <- </span>index *template, i + *result<span class="Special"> <- </span>put-index *result, result-idx, in + i<span class="Special"> <- </span>add i, <span class="Constant">1</span> + result-idx<span class="Special"> <- </span>add result-idx, <span class="Constant">1</span> + <span class="muControl">loop</span> + <span class="Delimiter">}</span> +] + +<span class="muScenario">scenario</span> interpolate-works [ + run [ + <span class="Constant">local-scope</span> + x:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc_ghi]</span> + y:address:array:character<span class="Special"> <- </span>new <span class="Constant">[def]</span> + z:address:array:character<span class="Special"> <- </span>interpolate x, y + <span class="Constant">10</span>:array:character/<span class="Special">raw <- </span>copy *z + ] + memory-should-contain [ + <span class="Constant">10</span>:array:character<span class="Special"> <- </span><span class="Constant">[abcdefghi]</span> + ] +] + +<span class="muScenario">scenario</span> interpolate-at-start [ + run [ + <span class="Constant">local-scope</span> + x:address:array:character<span class="Special"> <- </span>new <span class="Constant">[_, hello!]</span> + y:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc]</span> + z:address:array:character<span class="Special"> <- </span>interpolate x, y + <span class="Constant">10</span>:array:character/<span class="Special">raw <- </span>copy *z + ] + memory-should-contain [ + <span class="Constant">10</span>:array:character<span class="Special"> <- </span><span class="Constant">[abc, hello!]</span> + <span class="Constant">22</span><span class="Special"> <- </span><span class="Constant">0</span> <span class="Comment"># out of bounds</span> + ] +] + +<span class="muScenario">scenario</span> interpolate-at-end [ + run [ + x:address:array:character<span class="Special"> <- </span>new <span class="Constant">[hello, _]</span> + y:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc]</span> + z:address:array:character<span class="Special"> <- </span>interpolate x, y + <span class="Constant">10</span>:array:character/<span class="Special">raw <- </span>copy *z + ] + memory-should-contain [ + <span class="Constant">10</span>:array:character<span class="Special"> <- </span><span class="Constant">[hello, abc]</span> + ] +] + +<span class="Comment"># result:boolean <- space? c:character</span> +<span class="muRecipe">def</span> space? c:character<span class="muRecipe"> -> </span>result:boolean [ + <span class="Constant">local-scope</span> + <span class="Constant">load-ingredients</span> + <span class="Comment"># most common case first</span> + result<span class="Special"> <- </span>equal c, <span class="Constant">32/space</span> + <span class="muControl">return-if</span> result + result<span class="Special"> <- </span>equal c, <span class="Constant">10/newline</span> + <span class="muControl">return-if</span> result + result<span class="Special"> <- </span>equal c, <span class="Constant">9/tab</span> + <span class="muControl">return-if</span> result + result<span class="Special"> <- </span>equal c, <span class="Constant">13/carriage-return</span> + <span class="muControl">return-if</span> result + <span class="Comment"># remaining uncommon cases in sorted order</span> + <span class="Comment"># <a href="http://unicode.org">http://unicode.org</a> code-points in unicode-set Z and Pattern_White_Space</span> + result<span class="Special"> <- </span>equal c, <span class="Constant">11/ctrl-k</span> + <span class="muControl">return-if</span> result + result<span class="Special"> <- </span>equal c, <span class="Constant">12/ctrl-l</span> + <span class="muControl">return-if</span> result + result<span class="Special"> <- </span>equal c, <span class="Constant">133/ctrl-0085</span> + <span class="muControl">return-if</span> result + result<span class="Special"> <- </span>equal c, <span class="Constant">160/no-break-space</span> + <span class="muControl">return-if</span> result + result<span class="Special"> <- </span>equal c, <span class="Constant">5760/ogham-space-mark</span> + <span class="muControl">return-if</span> result + result<span class="Special"> <- </span>equal c, <span class="Constant">8192/en-quad</span> + <span class="muControl">return-if</span> result + result<span class="Special"> <- </span>equal c, <span class="Constant">8193/em-quad</span> + <span class="muControl">return-if</span> result + result<span class="Special"> <- </span>equal c, <span class="Constant">8194/en-space</span> + <span class="muControl">return-if</span> result + result<span class="Special"> <- </span>equal c, <span class="Constant">8195/em-space</span> + <span class="muControl">return-if</span> result + result<span class="Special"> <- </span>equal c, <span class="Constant">8196/three-per-em-space</span> + <span class="muControl">return-if</span> result + result<span class="Special"> <- </span>equal c, <span class="Constant">8197/four-per-em-space</span> + <span class="muControl">return-if</span> result + result<span class="Special"> <- </span>equal c, <span class="Constant">8198/six-per-em-space</span> + <span class="muControl">return-if</span> result + result<span class="Special"> <- </span>equal c, <span class="Constant">8199/figure-space</span> + <span class="muControl">return-if</span> result + result<span class="Special"> <- </span>equal c, <span class="Constant">8200/punctuation-space</span> + <span class="muControl">return-if</span> result + result<span class="Special"> <- </span>equal c, <span class="Constant">8201/thin-space</span> + <span class="muControl">return-if</span> result + result<span class="Special"> <- </span>equal c, <span class="Constant">8202/hair-space</span> + <span class="muControl">return-if</span> result + result<span class="Special"> <- </span>equal c, <span class="Constant">8206/left-to-right</span> + <span class="muControl">return-if</span> result + result<span class="Special"> <- </span>equal c, <span class="Constant">8207/right-to-left</span> + <span class="muControl">return-if</span> result + result<span class="Special"> <- </span>equal c, <span class="Constant">8232/line-separator</span> + <span class="muControl">return-if</span> result + result<span class="Special"> <- </span>equal c, <span class="Constant">8233/paragraph-separator</span> + <span class="muControl">return-if</span> result + result<span class="Special"> <- </span>equal c, <span class="Constant">8239/narrow-no-break-space</span> + <span class="muControl">return-if</span> result + result<span class="Special"> <- </span>equal c, <span class="Constant">8287/medium-mathematical-space</span> + <span class="muControl">return-if</span> result + result<span class="Special"> <- </span>equal c, <span class="Constant">12288/ideographic-space</span> +] + +<span class="muRecipe">def</span> trim s:address:array:character<span class="muRecipe"> -> </span>result:address:array:character [ + <span class="Constant">local-scope</span> + <span class="Constant">load-ingredients</span> + len:number<span class="Special"> <- </span>length *s + <span class="Comment"># left trim: compute start</span> + start:number<span class="Special"> <- </span>copy <span class="Constant">0</span> + <span class="Delimiter">{</span> + <span class="Delimiter">{</span> + at-end?:boolean<span class="Special"> <- </span>greater-or-equal start, len + <span class="muControl">break-unless</span> at-end? + result<span class="Special"> <- </span>new <span class="Constant">character:type</span>, <span class="Constant">0</span> + <span class="muControl">return</span> + <span class="Delimiter">}</span> + curr:character<span class="Special"> <- </span>index *s, start + whitespace?:boolean<span class="Special"> <- </span>space? curr + <span class="muControl">break-unless</span> whitespace? + start<span class="Special"> <- </span>add start, <span class="Constant">1</span> + <span class="muControl">loop</span> + <span class="Delimiter">}</span> + <span class="Comment"># right trim: compute end</span> + end:number<span class="Special"> <- </span>subtract len, <span class="Constant">1</span> + <span class="Delimiter">{</span> + not-at-start?:boolean<span class="Special"> <- </span>greater-than end, start + assert not-at-start?, <span class="Constant">[end ran up against start]</span> + curr:character<span class="Special"> <- </span>index *s, end + whitespace?:boolean<span class="Special"> <- </span>space? curr + <span class="muControl">break-unless</span> whitespace? + end<span class="Special"> <- </span>subtract end, <span class="Constant">1</span> + <span class="muControl">loop</span> + <span class="Delimiter">}</span> + <span class="Comment"># result = new character[end+1 - start]</span> + new-len:number<span class="Special"> <- </span>subtract end, start, <span class="Constant">-1</span> + result:address:array:character<span class="Special"> <- </span>new <span class="Constant">character:type</span>, new-len + <span class="Comment"># copy the untrimmed parts between start and end</span> + i:number<span class="Special"> <- </span>copy start + j:number<span class="Special"> <- </span>copy <span class="Constant">0</span> + <span class="Delimiter">{</span> + <span class="Comment"># while i <= end</span> + done?:boolean<span class="Special"> <- </span>greater-than i, end + <span class="muControl">break-if</span> done? + <span class="Comment"># result[j] = s[i]</span> + src:character<span class="Special"> <- </span>index *s, i + *result<span class="Special"> <- </span>put-index *result, j, src + i<span class="Special"> <- </span>add i, <span class="Constant">1</span> + j<span class="Special"> <- </span>add j, <span class="Constant">1</span> + <span class="muControl">loop</span> + <span class="Delimiter">}</span> +] + +<span class="muScenario">scenario</span> trim-unmodified [ + run [ + <span class="Constant">local-scope</span> + x:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc]</span> + y:address:array:character<span class="Special"> <- </span>trim x + <span class="Constant">1</span>:array:character/<span class="Special">raw <- </span>copy *y + ] + memory-should-contain [ + <span class="Constant">1</span>:array:character<span class="Special"> <- </span><span class="Constant">[abc]</span> + ] +] + +<span class="muScenario">scenario</span> trim-left [ + run [ + <span class="Constant">local-scope</span> + x:address:array:character<span class="Special"> <- </span>new <span class="Constant">[ abc]</span> + y:address:array:character<span class="Special"> <- </span>trim x + <span class="Constant">1</span>:array:character/<span class="Special">raw <- </span>copy *y + ] + memory-should-contain [ + <span class="Constant">1</span>:array:character<span class="Special"> <- </span><span class="Constant">[abc]</span> + ] +] + +<span class="muScenario">scenario</span> trim-right [ + run [ + <span class="Constant">local-scope</span> + x:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc ]</span> + y:address:array:character<span class="Special"> <- </span>trim x + <span class="Constant">1</span>:array:character/<span class="Special">raw <- </span>copy *y + ] + memory-should-contain [ + <span class="Constant">1</span>:array:character<span class="Special"> <- </span><span class="Constant">[abc]</span> + ] +] + +<span class="muScenario">scenario</span> trim-left-right [ + run [ + <span class="Constant">local-scope</span> + x:address:array:character<span class="Special"> <- </span>new <span class="Constant">[ abc ]</span> + y:address:array:character<span class="Special"> <- </span>trim x + <span class="Constant">1</span>:array:character/<span class="Special">raw <- </span>copy *y + ] + memory-should-contain [ + <span class="Constant">1</span>:array:character<span class="Special"> <- </span><span class="Constant">[abc]</span> + ] +] + +<span class="muScenario">scenario</span> trim-newline-tab [ + run [ + <span class="Constant">local-scope</span> + x:address:array:character<span class="Special"> <- </span>new <span class="Constant">[ abc</span> +<span class="Constant">]</span> + y:address:array:character<span class="Special"> <- </span>trim x + <span class="Constant">1</span>:array:character/<span class="Special">raw <- </span>copy *y + ] + memory-should-contain [ + <span class="Constant">1</span>:array:character<span class="Special"> <- </span><span class="Constant">[abc]</span> + ] +] + +<span class="muRecipe">def</span> find-next text:address:array:character, pattern:character, idx:number<span class="muRecipe"> -> </span>next-index:number [ + <span class="Constant">local-scope</span> + <span class="Constant">load-ingredients</span> + len:number<span class="Special"> <- </span>length *text + <span class="Delimiter">{</span> + eof?:boolean<span class="Special"> <- </span>greater-or-equal idx, len + <span class="muControl">break-if</span> eof? + curr:character<span class="Special"> <- </span>index *text, idx + found?:boolean<span class="Special"> <- </span>equal curr, pattern + <span class="muControl">break-if</span> found? + idx<span class="Special"> <- </span>add idx, <span class="Constant">1</span> + <span class="muControl">loop</span> + <span class="Delimiter">}</span> + <span class="muControl">return</span> idx +] + +<span class="muScenario">scenario</span> text-find-next [ + run [ + <span class="Constant">local-scope</span> + x:address:array:character<span class="Special"> <- </span>new <span class="Constant">[a/b]</span> + <span class="Constant">10</span>:number/<span class="Special">raw <- </span>find-next x, <span class="Constant">47/slash</span>, <span class="Constant">0/start-index</span> + ] + memory-should-contain [ + <span class="Constant">10</span><span class="Special"> <- </span><span class="Constant">1</span> + ] +] + +<span class="muScenario">scenario</span> text-find-next-empty [ + run [ + <span class="Constant">local-scope</span> + x:address:array:character<span class="Special"> <- </span>new <span class="Constant">[]</span> + <span class="Constant">10</span>:number/<span class="Special">raw <- </span>find-next x, <span class="Constant">47/slash</span>, <span class="Constant">0/start-index</span> + ] + memory-should-contain [ + <span class="Constant">10</span><span class="Special"> <- </span><span class="Constant">0</span> + ] +] + +<span class="muScenario">scenario</span> text-find-next-initial [ + run [ + <span class="Constant">local-scope</span> + x:address:array:character<span class="Special"> <- </span>new <span class="Constant">[/abc]</span> + <span class="Constant">10</span>:number/<span class="Special">raw <- </span>find-next x, <span class="Constant">47/slash</span>, <span class="Constant">0/start-index</span> + ] + memory-should-contain [ + <span class="Constant">10</span><span class="Special"> <- </span><span class="Constant">0</span> <span class="Comment"># prefix match</span> + ] +] + +<span class="muScenario">scenario</span> text-find-next-final [ + run [ + <span class="Constant">local-scope</span> + x:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc/]</span> + <span class="Constant">10</span>:number/<span class="Special">raw <- </span>find-next x, <span class="Constant">47/slash</span>, <span class="Constant">0/start-index</span> + ] + memory-should-contain [ + <span class="Constant">10</span><span class="Special"> <- </span><span class="Constant">3</span> <span class="Comment"># suffix match</span> + ] +] + +<span class="muScenario">scenario</span> text-find-next-missing [ + run [ + <span class="Constant">local-scope</span> + x:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abcd]</span> + <span class="Constant">10</span>:number/<span class="Special">raw <- </span>find-next x, <span class="Constant">47/slash</span>, <span class="Constant">0/start-index</span> + ] + memory-should-contain [ + <span class="Constant">10</span><span class="Special"> <- </span><span class="Constant">4</span> <span class="Comment"># no match</span> + ] +] + +<span class="muScenario">scenario</span> text-find-next-invalid-index [ + run [ + <span class="Constant">local-scope</span> + x:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc]</span> + <span class="Constant">10</span>:number/<span class="Special">raw <- </span>find-next x, <span class="Constant">47/slash</span>, <span class="Constant">4/start-index</span> + ] + memory-should-contain [ + <span class="Constant">10</span><span class="Special"> <- </span><span class="Constant">4</span> <span class="Comment"># no change</span> + ] +] + +<span class="muScenario">scenario</span> text-find-next-first [ + run [ + <span class="Constant">local-scope</span> + x:address:array:character<span class="Special"> <- </span>new <span class="Constant">[ab/c/]</span> + <span class="Constant">10</span>:number/<span class="Special">raw <- </span>find-next x, <span class="Constant">47/slash</span>, <span class="Constant">0/start-index</span> + ] + memory-should-contain [ + <span class="Constant">10</span><span class="Special"> <- </span><span class="Constant">2</span> <span class="Comment"># first '/' of multiple</span> + ] +] + +<span class="muScenario">scenario</span> text-find-next-second [ + run [ + <span class="Constant">local-scope</span> + x:address:array:character<span class="Special"> <- </span>new <span class="Constant">[ab/c/]</span> + <span class="Constant">10</span>:number/<span class="Special">raw <- </span>find-next x, <span class="Constant">47/slash</span>, <span class="Constant">3/start-index</span> + ] + memory-should-contain [ + <span class="Constant">10</span><span class="Special"> <- </span><span class="Constant">4</span> <span class="Comment"># second '/' of multiple</span> + ] +] + +<span class="Comment"># search for a pattern of multiple characters</span> +<span class="Comment"># fairly dumb algorithm</span> +<span class="muRecipe">def</span> find-next text:address:array:character, pattern:address:array:character, idx:number<span class="muRecipe"> -> </span>next-index:number [ + <span class="Constant">local-scope</span> + <span class="Constant">load-ingredients</span> + first:character<span class="Special"> <- </span>index *pattern, <span class="Constant">0</span> + <span class="Comment"># repeatedly check for match at current idx</span> + len:number<span class="Special"> <- </span>length *text + <span class="Delimiter">{</span> + <span class="Comment"># does some unnecessary work checking even when there isn't enough of text left</span> + done?:boolean<span class="Special"> <- </span>greater-or-equal idx, len + <span class="muControl">break-if</span> done? + found?:boolean<span class="Special"> <- </span>match-at text, pattern, idx + <span class="muControl">break-if</span> found? + idx<span class="Special"> <- </span>add idx, <span class="Constant">1</span> + <span class="Comment"># optimization: skip past indices that definitely won't match</span> + idx<span class="Special"> <- </span>find-next text, first, idx + <span class="muControl">loop</span> + <span class="Delimiter">}</span> + <span class="muControl">return</span> idx +] + +<span class="muScenario">scenario</span> find-next-text-1 [ + run [ + <span class="Constant">local-scope</span> + x:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc]</span> + y:address:array:character<span class="Special"> <- </span>new <span class="Constant">[bc]</span> + <span class="Constant">10</span>:number/<span class="Special">raw <- </span>find-next x, y, <span class="Constant">0</span> + ] + memory-should-contain [ + <span class="Constant">10</span><span class="Special"> <- </span><span class="Constant">1</span> + ] +] + +<span class="muScenario">scenario</span> find-next-text-2 [ + run [ + <span class="Constant">local-scope</span> + x:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abcd]</span> + y:address:array:character<span class="Special"> <- </span>new <span class="Constant">[bc]</span> + <span class="Constant">10</span>:number/<span class="Special">raw <- </span>find-next x, y, <span class="Constant">1</span> + ] + memory-should-contain [ + <span class="Constant">10</span><span class="Special"> <- </span><span class="Constant">1</span> + ] +] + +<span class="muScenario">scenario</span> find-next-no-match [ + run [ + <span class="Constant">local-scope</span> + x:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc]</span> + y:address:array:character<span class="Special"> <- </span>new <span class="Constant">[bd]</span> + <span class="Constant">10</span>:number/<span class="Special">raw <- </span>find-next x, y, <span class="Constant">0</span> + ] + memory-should-contain [ + <span class="Constant">10</span><span class="Special"> <- </span><span class="Constant">3</span> <span class="Comment"># not found</span> + ] +] + +<span class="muScenario">scenario</span> find-next-suffix-match [ + run [ + <span class="Constant">local-scope</span> + x:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abcd]</span> + y:address:array:character<span class="Special"> <- </span>new <span class="Constant">[cd]</span> + <span class="Constant">10</span>:number/<span class="Special">raw <- </span>find-next x, y, <span class="Constant">0</span> + ] + memory-should-contain [ + <span class="Constant">10</span><span class="Special"> <- </span><span class="Constant">2</span> + ] +] + +<span class="muScenario">scenario</span> find-next-suffix-match-2 [ + run [ + <span class="Constant">local-scope</span> + x:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abcd]</span> + y:address:array:character<span class="Special"> <- </span>new <span class="Constant">[cde]</span> + <span class="Constant">10</span>:number/<span class="Special">raw <- </span>find-next x, y, <span class="Constant">0</span> + ] + memory-should-contain [ + <span class="Constant">10</span><span class="Special"> <- </span><span class="Constant">4</span> <span class="Comment"># not found</span> + ] +] + +<span class="Comment"># checks if pattern matches at index 'idx'</span> +<span class="muRecipe">def</span> match-at text:address:array:character, pattern:address:array:character, idx:number<span class="muRecipe"> -> </span>result:boolean [ + <span class="Constant">local-scope</span> + <span class="Constant">load-ingredients</span> + pattern-len:number<span class="Special"> <- </span>length *pattern + <span class="Comment"># check that there's space left for the pattern</span> + <span class="Delimiter">{</span> + x:number<span class="Special"> <- </span>length *text + x<span class="Special"> <- </span>subtract x, pattern-len + enough-room?:boolean<span class="Special"> <- </span>lesser-or-equal idx, x + <span class="muControl">break-if</span> enough-room? + <span class="muControl">return</span> <span class="Constant">0/not-found</span> + <span class="Delimiter">}</span> + <span class="Comment"># check each character of pattern</span> + pattern-idx:number<span class="Special"> <- </span>copy <span class="Constant">0</span> + <span class="Delimiter">{</span> + done?:boolean<span class="Special"> <- </span>greater-or-equal pattern-idx, pattern-len + <span class="muControl">break-if</span> done? + c:character<span class="Special"> <- </span>index *text, idx + exp:character<span class="Special"> <- </span>index *pattern, pattern-idx + <span class="Delimiter">{</span> + match?:boolean<span class="Special"> <- </span>equal c, exp + <span class="muControl">break-if</span> match? + <span class="muControl">return</span> <span class="Constant">0/not-found</span> + <span class="Delimiter">}</span> + idx<span class="Special"> <- </span>add idx, <span class="Constant">1</span> + pattern-idx<span class="Special"> <- </span>add pattern-idx, <span class="Constant">1</span> + <span class="muControl">loop</span> + <span class="Delimiter">}</span> + <span class="muControl">return</span> <span class="Constant">1/found</span> +] + +<span class="muScenario">scenario</span> match-at-checks-pattern-at-index [ + run [ + <span class="Constant">local-scope</span> + x:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc]</span> + y:address:array:character<span class="Special"> <- </span>new <span class="Constant">[ab]</span> + <span class="Constant">10</span>:boolean/<span class="Special">raw <- </span>match-at x, y, <span class="Constant">0</span> + ] + memory-should-contain [ + <span class="Constant">10</span><span class="Special"> <- </span><span class="Constant">1</span> <span class="Comment"># match found</span> + ] +] + +<span class="muScenario">scenario</span> match-at-reflexive [ + run [ + <span class="Constant">local-scope</span> + x:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc]</span> + <span class="Constant">10</span>:boolean/<span class="Special">raw <- </span>match-at x, x, <span class="Constant">0</span> + ] + memory-should-contain [ + <span class="Constant">10</span><span class="Special"> <- </span><span class="Constant">1</span> <span class="Comment"># match found</span> + ] +] + +<span class="muScenario">scenario</span> match-at-outside-bounds [ + run [ + <span class="Constant">local-scope</span> + x:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc]</span> + y:address:array:character<span class="Special"> <- </span>new <span class="Constant">[a]</span> + <span class="Constant">10</span>:boolean/<span class="Special">raw <- </span>match-at x, y, <span class="Constant">4</span> + ] + memory-should-contain [ + <span class="Constant">10</span><span class="Special"> <- </span><span class="Constant">0</span> <span class="Comment"># never matches</span> + ] +] + +<span class="muScenario">scenario</span> match-at-empty-pattern [ + run [ + <span class="Constant">local-scope</span> + x:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc]</span> + y:address:array:character<span class="Special"> <- </span>new <span class="Constant">[]</span> + <span class="Constant">10</span>:boolean/<span class="Special">raw <- </span>match-at x, y, <span class="Constant">0</span> + ] + memory-should-contain [ + <span class="Constant">10</span><span class="Special"> <- </span><span class="Constant">1</span> <span class="Comment"># always matches empty pattern given a valid index</span> + ] +] + +<span class="muScenario">scenario</span> match-at-empty-pattern-outside-bound [ + run [ + <span class="Constant">local-scope</span> + x:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc]</span> + y:address:array:character<span class="Special"> <- </span>new <span class="Constant">[]</span> + <span class="Constant">10</span>:boolean/<span class="Special">raw <- </span>match-at x, y, <span class="Constant">4</span> + ] + memory-should-contain [ + <span class="Constant">10</span><span class="Special"> <- </span><span class="Constant">0</span> <span class="Comment"># no match</span> + ] +] + +<span class="muScenario">scenario</span> match-at-empty-text [ + run [ + <span class="Constant">local-scope</span> + x:address:array:character<span class="Special"> <- </span>new <span class="Constant">[]</span> + y:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc]</span> + <span class="Constant">10</span>:boolean/<span class="Special">raw <- </span>match-at x, y, <span class="Constant">0</span> + ] + memory-should-contain [ + <span class="Constant">10</span><span class="Special"> <- </span><span class="Constant">0</span> <span class="Comment"># no match</span> + ] +] + +<span class="muScenario">scenario</span> match-at-empty-against-empty [ + run [ + <span class="Constant">local-scope</span> + x:address:array:character<span class="Special"> <- </span>new <span class="Constant">[]</span> + <span class="Constant">10</span>:boolean/<span class="Special">raw <- </span>match-at x, x, <span class="Constant">0</span> + ] + memory-should-contain [ + <span class="Constant">10</span><span class="Special"> <- </span><span class="Constant">1</span> <span class="Comment"># matches because pattern is also empty</span> + ] +] + +<span class="muScenario">scenario</span> match-at-inside-bounds [ + run [ + <span class="Constant">local-scope</span> + x:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc]</span> + y:address:array:character<span class="Special"> <- </span>new <span class="Constant">[bc]</span> + <span class="Constant">10</span>:boolean/<span class="Special">raw <- </span>match-at x, y, <span class="Constant">1</span> + ] + memory-should-contain [ + <span class="Constant">10</span><span class="Special"> <- </span><span class="Constant">1</span> <span class="Comment"># match</span> + ] +] + +<span class="muScenario">scenario</span> match-at-inside-bounds-2 [ + run [ + <span class="Constant">local-scope</span> + x:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc]</span> + y:address:array:character<span class="Special"> <- </span>new <span class="Constant">[bc]</span> + <span class="Constant">10</span>:boolean/<span class="Special">raw <- </span>match-at x, y, <span class="Constant">0</span> + ] + memory-should-contain [ + <span class="Constant">10</span><span class="Special"> <- </span><span class="Constant">0</span> <span class="Comment"># no match</span> + ] +] + +<span class="muRecipe">def</span> split s:address:array:character, delim:character<span class="muRecipe"> -> </span>result:address:array:address:array:character [ + <span class="Constant">local-scope</span> + <span class="Constant">load-ingredients</span> + <span class="Comment"># empty text? return empty array</span> + len:number<span class="Special"> <- </span>length *s + <span class="Delimiter">{</span> + empty?:boolean<span class="Special"> <- </span>equal len, <span class="Constant">0</span> + <span class="muControl">break-unless</span> empty? + result<span class="Special"> <- </span>new <span class="Delimiter">{</span>(address array character): type<span class="Delimiter">}</span>, <span class="Constant">0</span> + <span class="muControl">return</span> + <span class="Delimiter">}</span> + <span class="Comment"># count #pieces we need room for</span> + count:number<span class="Special"> <- </span>copy <span class="Constant">1</span> <span class="Comment"># n delimiters = n+1 pieces</span> + idx:number<span class="Special"> <- </span>copy <span class="Constant">0</span> + <span class="Delimiter">{</span> + idx<span class="Special"> <- </span>find-next s, delim, idx + done?:boolean<span class="Special"> <- </span>greater-or-equal idx, len + <span class="muControl">break-if</span> done? + idx<span class="Special"> <- </span>add idx, <span class="Constant">1</span> + count<span class="Special"> <- </span>add count, <span class="Constant">1</span> + <span class="muControl">loop</span> + <span class="Delimiter">}</span> + <span class="Comment"># allocate space</span> + result<span class="Special"> <- </span>new <span class="Delimiter">{</span>(address array character): type<span class="Delimiter">}</span>, count + <span class="Comment"># repeatedly copy slices start..end until delimiter into result[curr-result]</span> + curr-result:number<span class="Special"> <- </span>copy <span class="Constant">0</span> + start:number<span class="Special"> <- </span>copy <span class="Constant">0</span> + <span class="Delimiter">{</span> + <span class="Comment"># while next delim exists</span> + done?:boolean<span class="Special"> <- </span>greater-or-equal start, len + <span class="muControl">break-if</span> done? + end:number<span class="Special"> <- </span>find-next s, delim, start + <span class="Comment"># copy start..end into result[curr-result]</span> + dest:address:array:character<span class="Special"> <- </span>copy-range s, start, end + *result<span class="Special"> <- </span>put-index *result, curr-result, dest + <span class="Comment"># slide over to next slice</span> + start<span class="Special"> <- </span>add end, <span class="Constant">1</span> + curr-result<span class="Special"> <- </span>add curr-result, <span class="Constant">1</span> + <span class="muControl">loop</span> + <span class="Delimiter">}</span> +] + +<span class="muScenario">scenario</span> text-split-1 [ + run [ + <span class="Constant">local-scope</span> + x:address:array:character<span class="Special"> <- </span>new <span class="Constant">[a/b]</span> + y:address:array:address:array:character<span class="Special"> <- </span>split x, <span class="Constant">47/slash</span> + <span class="Constant">10</span>:number/<span class="Special">raw <- </span>length *y + a:address:array:character<span class="Special"> <- </span>index *y, <span class="Constant">0</span> + b:address:array:character<span class="Special"> <- </span>index *y, <span class="Constant">1</span> + <span class="Constant">20</span>:array:character/<span class="Special">raw <- </span>copy *a + <span class="Constant">30</span>:array:character/<span class="Special">raw <- </span>copy *b + ] + memory-should-contain [ + <span class="Constant">10</span><span class="Special"> <- </span><span class="Constant">2</span> <span class="Comment"># length of result</span> + <span class="Constant">20</span>:array:character<span class="Special"> <- </span><span class="Constant">[a]</span> + <span class="Constant">30</span>:array:character<span class="Special"> <- </span><span class="Constant">[b]</span> + ] +] + +<span class="muScenario">scenario</span> text-split-2 [ + run [ + <span class="Constant">local-scope</span> + x:address:array:character<span class="Special"> <- </span>new <span class="Constant">[a/b/c]</span> + y:address:array:address:array:character<span class="Special"> <- </span>split x, <span class="Constant">47/slash</span> + <span class="Constant">10</span>:number/<span class="Special">raw <- </span>length *y + a:address:array:character<span class="Special"> <- </span>index *y, <span class="Constant">0</span> + b:address:array:character<span class="Special"> <- </span>index *y, <span class="Constant">1</span> + c:address:array:character<span class="Special"> <- </span>index *y, <span class="Constant">2</span> + <span class="Constant">20</span>:array:character/<span class="Special">raw <- </span>copy *a + <span class="Constant">30</span>:array:character/<span class="Special">raw <- </span>copy *b + <span class="Constant">40</span>:array:character/<span class="Special">raw <- </span>copy *c + ] + memory-should-contain [ + <span class="Constant">10</span><span class="Special"> <- </span><span class="Constant">3</span> <span class="Comment"># length of result</span> + <span class="Constant">20</span>:array:character<span class="Special"> <- </span><span class="Constant">[a]</span> + <span class="Constant">30</span>:array:character<span class="Special"> <- </span><span class="Constant">[b]</span> + <span class="Constant">40</span>:array:character<span class="Special"> <- </span><span class="Constant">[c]</span> + ] +] + +<span class="muScenario">scenario</span> text-split-missing [ + run [ + <span class="Constant">local-scope</span> + x:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc]</span> + y:address:array:address:array:character<span class="Special"> <- </span>split x, <span class="Constant">47/slash</span> + <span class="Constant">10</span>:number/<span class="Special">raw <- </span>length *y + a:address:array:character<span class="Special"> <- </span>index *y, <span class="Constant">0</span> + <span class="Constant">20</span>:array:character/<span class="Special">raw <- </span>copy *a + ] + memory-should-contain [ + <span class="Constant">10</span><span class="Special"> <- </span><span class="Constant">1</span> <span class="Comment"># length of result</span> + <span class="Constant">20</span>:array:character<span class="Special"> <- </span><span class="Constant">[abc]</span> + ] +] + +<span class="muScenario">scenario</span> text-split-empty [ + run [ + <span class="Constant">local-scope</span> + x:address:array:character<span class="Special"> <- </span>new <span class="Constant">[]</span> + y:address:array:address:array:character<span class="Special"> <- </span>split x, <span class="Constant">47/slash</span> + <span class="Constant">10</span>:number/<span class="Special">raw <- </span>length *y + ] + memory-should-contain [ + <span class="Constant">10</span><span class="Special"> <- </span><span class="Constant">0</span> <span class="Comment"># empty result</span> + ] +] + +<span class="muScenario">scenario</span> text-split-empty-piece [ + run [ + <span class="Constant">local-scope</span> + x:address:array:character<span class="Special"> <- </span>new <span class="Constant">[a/b//c]</span> + y:address:array:address:array:character<span class="Special"> <- </span>split x:address:array:character, <span class="Constant">47/slash</span> + <span class="Constant">10</span>:number/<span class="Special">raw <- </span>length *y + a:address:array:character<span class="Special"> <- </span>index *y, <span class="Constant">0</span> + b:address:array:character<span class="Special"> <- </span>index *y, <span class="Constant">1</span> + c:address:array:character<span class="Special"> <- </span>index *y, <span class="Constant">2</span> + d:address:array:character<span class="Special"> <- </span>index *y, <span class="Constant">3</span> + <span class="Constant">20</span>:array:character/<span class="Special">raw <- </span>copy *a + <span class="Constant">30</span>:array:character/<span class="Special">raw <- </span>copy *b + <span class="Constant">40</span>:array:character/<span class="Special">raw <- </span>copy *c + <span class="Constant">50</span>:array:character/<span class="Special">raw <- </span>copy *d + ] + memory-should-contain [ + <span class="Constant">10</span><span class="Special"> <- </span><span class="Constant">4</span> <span class="Comment"># length of result</span> + <span class="Constant">20</span>:array:character<span class="Special"> <- </span><span class="Constant">[a]</span> + <span class="Constant">30</span>:array:character<span class="Special"> <- </span><span class="Constant">[b]</span> + <span class="Constant">40</span>:array:character<span class="Special"> <- </span><span class="Constant">[]</span> + <span class="Constant">50</span>:array:character<span class="Special"> <- </span><span class="Constant">[c]</span> + ] +] + +<span class="muRecipe">def</span> split-first text:address:array:character, delim:character<span class="muRecipe"> -> </span>x:address:array:character, y:address:array:character [ + <span class="Constant">local-scope</span> + <span class="Constant">load-ingredients</span> + <span class="Comment"># empty text? return empty texts</span> + len:number<span class="Special"> <- </span>length *text + <span class="Delimiter">{</span> + empty?:boolean<span class="Special"> <- </span>equal len, <span class="Constant">0</span> + <span class="muControl">break-unless</span> empty? + x:address:array:character<span class="Special"> <- </span>new <span class="Constant">[]</span> + y:address:array:character<span class="Special"> <- </span>new <span class="Constant">[]</span> + <span class="muControl">return</span> + <span class="Delimiter">}</span> + idx:number<span class="Special"> <- </span>find-next text, delim, <span class="Constant">0</span> + x:address:array:character<span class="Special"> <- </span>copy-range text, <span class="Constant">0</span>, idx + idx<span class="Special"> <- </span>add idx, <span class="Constant">1</span> + y:address:array:character<span class="Special"> <- </span>copy-range text, idx, len +] + +<span class="muScenario">scenario</span> text-split-first [ + run [ + <span class="Constant">local-scope</span> + x:address:array:character<span class="Special"> <- </span>new <span class="Constant">[a/b]</span> + y:address:array:character, z:address:array:character<span class="Special"> <- </span>split-first x, <span class="Constant">47/slash</span> + <span class="Constant">10</span>:array:character/<span class="Special">raw <- </span>copy *y + <span class="Constant">20</span>:array:character/<span class="Special">raw <- </span>copy *z + ] + memory-should-contain [ + <span class="Constant">10</span>:array:character<span class="Special"> <- </span><span class="Constant">[a]</span> + <span class="Constant">20</span>:array:character<span class="Special"> <- </span><span class="Constant">[b]</span> + ] +] + +<span class="muRecipe">def</span> copy-range buf:address:array:character, start:number, end:number<span class="muRecipe"> -> </span>result:address:array:character [ + <span class="Constant">local-scope</span> + <span class="Constant">load-ingredients</span> + <span class="Comment"># if end is out of bounds, trim it</span> + len:number<span class="Special"> <- </span>length *buf + end:number<span class="Special"> <- </span>min len, end + <span class="Comment"># allocate space for result</span> + len<span class="Special"> <- </span>subtract end, start + result:address:array:character<span class="Special"> <- </span>new <span class="Constant">character:type</span>, len + <span class="Comment"># copy start..end into result[curr-result]</span> + src-idx:number<span class="Special"> <- </span>copy start + dest-idx:number<span class="Special"> <- </span>copy <span class="Constant">0</span> + <span class="Delimiter">{</span> + done?:boolean<span class="Special"> <- </span>greater-or-equal src-idx, end + <span class="muControl">break-if</span> done? + src:character<span class="Special"> <- </span>index *buf, src-idx + *result<span class="Special"> <- </span>put-index *result, dest-idx, src + src-idx<span class="Special"> <- </span>add src-idx, <span class="Constant">1</span> + dest-idx<span class="Special"> <- </span>add dest-idx, <span class="Constant">1</span> + <span class="muControl">loop</span> + <span class="Delimiter">}</span> +] + +<span class="muScenario">scenario</span> text-copy-copies-partial-text [ + run [ + <span class="Constant">local-scope</span> + x:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc]</span> + y:address:array:character<span class="Special"> <- </span>copy-range x, <span class="Constant">1</span>, <span class="Constant">3</span> + <span class="Constant">1</span>:array:character/<span class="Special">raw <- </span>copy *y + ] + memory-should-contain [ + <span class="Constant">1</span>:array:character<span class="Special"> <- </span><span class="Constant">[bc]</span> + ] +] + +<span class="muScenario">scenario</span> text-copy-out-of-bounds [ + run [ + <span class="Constant">local-scope</span> + x:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc]</span> + y:address:array:character<span class="Special"> <- </span>copy-range x, <span class="Constant">2</span>, <span class="Constant">4</span> + <span class="Constant">1</span>:array:character/<span class="Special">raw <- </span>copy *y + ] + memory-should-contain [ + <span class="Constant">1</span>:array:character<span class="Special"> <- </span><span class="Constant">[c]</span> + ] +] + +<span class="muScenario">scenario</span> text-copy-out-of-bounds-2 [ + run [ + <span class="Constant">local-scope</span> + x:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc]</span> + y:address:array:character<span class="Special"> <- </span>copy-range x, <span class="Constant">3</span>, <span class="Constant">3</span> + <span class="Constant">1</span>:array:character/<span class="Special">raw <- </span>copy *y + ] + memory-should-contain [ + <span class="Constant">1</span>:array:character<span class="Special"> <- </span><span class="Constant">[]</span> + ] +] +</pre> +</body> +</html> +<!-- vim: set foldmethod=manual : --> |