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| author | Kartik K. Agaram <vc@akkartik.com> | 2015-11-29 14:18:52 -0800 |
|---|---|---|
| committer | Kartik K. Agaram <vc@akkartik.com> | 2015-11-29 14:18:52 -0800 |
| commit | db1f56c8449d2ea3d158753fe37bac5a750a2566 (patch) | |
| tree | 508a24c522c040498dbe7d60036035f3c4ae440a /html/070string.mu.html | |
| parent | 3670fb87f6d38c9ba4fcbb1eaa6439b4007a194e (diff) | |
| download | mu-db1f56c8449d2ea3d158753fe37bac5a750a2566.tar.gz | |
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Diffstat (limited to 'html/070string.mu.html')
| -rw-r--r-- | html/070string.mu.html | 1356 |
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diff --git a/html/070string.mu.html b/html/070string.mu.html deleted file mode 100644 index 08edff08..00000000 --- a/html/070string.mu.html +++ /dev/null @@ -1,1356 +0,0 @@ -<!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 - 070string.mu</title> -<meta name="Generator" content="Vim/7.4"> -<meta name="plugin-version" content="vim7.4_v1"> -<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-family: monospace; color: #eeeeee; background-color: #080808; } -* { font-size: 1.05em; } -.muControl { color: #c0a020; } -.muRecipe { color: #ff8700; } -.muScenario { color: #00af00; } -.muData { color: #ffff00; } -.Comment { color: #9090ff; } -.Constant { color: #00a0a0; } -.Special { color: #ff6060; } -.Delimiter { color: #a04060; } ---> -</style> - -<script type='text/javascript'> -<!-- - ---> -</script> -</head> -<body> -<pre id='vimCodeElement'> -<span class="Comment"># Some useful helpers for dealing with strings.</span> - -<span class="muRecipe">recipe</span> string-equal [ - <span class="Constant">local-scope</span> - a:address:array:character<span class="Special"> <- </span><span class="Constant">next-ingredient</span> - a-len:number<span class="Special"> <- </span>length *a - b:address:array:character<span class="Special"> <- </span><span class="Constant">next-ingredient</span> - 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">[string-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">reply</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">[string-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">reply</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">reply</span> <span class="Constant">1</span> -] - -<span class="muScenario">scenario</span> string-equal-reflexive [ - run [ - <span class="Constant">default-space</span>:address:array:location<span class="Special"> <- </span>new <span class="Constant">location:type</span>, <span class="Constant">30</span> - x:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc]</span> - <span class="Constant">3</span>:boolean/<span class="Special">raw <- </span>string-equal x, x - ] - memory-should-contain [ - <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">1</span> <span class="Comment"># x == x for all x</span> - ] -] - -<span class="muScenario">scenario</span> string-equal-identical [ - run [ - <span class="Constant">default-space</span>:address:array:location<span class="Special"> <- </span>new <span class="Constant">location:type</span>, <span class="Constant">30</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">3</span>:boolean/<span class="Special">raw <- </span>string-equal x, y - ] - memory-should-contain [ - <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">1</span> <span class="Comment"># abc == abc</span> - ] -] - -<span class="muScenario">scenario</span> string-equal-distinct-lengths [ - run [ - <span class="Constant">default-space</span>:address:array:location<span class="Special"> <- </span>new <span class="Constant">location:type</span>, <span class="Constant">30</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">3</span>:boolean/<span class="Special">raw <- </span>string-equal x, y - ] - memory-should-contain [ - <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">0</span> <span class="Comment"># abc != abcd</span> - ] - trace-should-contain [ - string-equal: comparing lengths - ] - trace-should-not-contain [ - string-equal: comparing characters - ] -] - -<span class="muScenario">scenario</span> string-equal-with-empty [ - run [ - <span class="Constant">default-space</span>:address:array:location<span class="Special"> <- </span>new <span class="Constant">location:type</span>, <span class="Constant">30</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">3</span>:boolean/<span class="Special">raw <- </span>string-equal x, y - ] - memory-should-contain [ - <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">0</span> <span class="Comment"># "" != abcd</span> - ] -] - -<span class="muScenario">scenario</span> string-equal-common-lengths-but-distinct [ - run [ - <span class="Constant">default-space</span>:address:array:location<span class="Special"> <- </span>new <span class="Constant">location:type</span>, <span class="Constant">30</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">3</span>:boolean/<span class="Special">raw <- </span>string-equal x, y - ] - memory-should-contain [ - <span class="Constant">3</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 strings.</span> -<span class="muData">container</span> buffer [ - length:number - data:address:array:character -] - -<span class="muRecipe">recipe</span> new-buffer [ - <span class="Constant">local-scope</span> - result:address:buffer<span class="Special"> <- </span>new <span class="Constant">buffer:type</span> - len:address:number<span class="Special"> <- </span>get-address *result, <span class="Constant">length:offset</span> - *len:address:number<span class="Special"> <- </span>copy <span class="Constant">0</span> - s:address:address:array:character<span class="Special"> <- </span>get-address *result, <span class="Constant">data:offset</span> - capacity:number, found?:boolean<span class="Special"> <- </span><span class="Constant">next-ingredient</span> - assert found?, <span class="Constant">[new-buffer must get a capacity argument]</span> - *s<span class="Special"> <- </span>new <span class="Constant">character:type</span>, capacity - <span class="muControl">reply</span> result -] - -<span class="muRecipe">recipe</span> grow-buffer [ - <span class="Constant">local-scope</span> - in:address:buffer<span class="Special"> <- </span><span class="Constant">next-ingredient</span> - <span class="Comment"># double buffer size</span> - x:address:address:array:character<span class="Special"> <- </span>get-address *in, <span class="Constant">data:offset</span> - oldlen:number<span class="Special"> <- </span>length **x - newlen:number<span class="Special"> <- </span>multiply oldlen, <span class="Constant">2</span> - olddata:address:array:character<span class="Special"> <- </span>copy *x - *x<span class="Special"> <- </span>new <span class="Constant">character:type</span>, newlen - <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 - dest:address:character<span class="Special"> <- </span>index-address **x, i - *dest<span class="Special"> <- </span>copy src - i<span class="Special"> <- </span>add i, <span class="Constant">1</span> - <span class="muControl">loop</span> - <span class="Delimiter">}</span> - <span class="muControl">reply</span> in -] - -<span class="muRecipe">recipe</span> buffer-full? [ - <span class="Constant">local-scope</span> - in:address:buffer<span class="Special"> <- </span><span class="Constant">next-ingredient</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:boolean<span class="Special"> <- </span>greater-or-equal len, capacity - <span class="muControl">reply</span> result -] - -<span class="Comment"># in <- buffer-append in:address:buffer, c:character</span> -<span class="muRecipe">recipe</span> buffer-append [ - <span class="Constant">local-scope</span> - in:address:buffer<span class="Special"> <- </span><span class="Constant">next-ingredient</span> - c:character<span class="Special"> <- </span><span class="Constant">next-ingredient</span> - len:address:number<span class="Special"> <- </span>get-address *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">reply-if</span> empty?, in/same-as-ingredient:<span class="Constant">0</span> - *len<span class="Special"> <- </span>subtract *len, <span class="Constant">1</span> - <span class="muControl">reply</span> in/same-as-ingredient:<span class="Constant">0</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> - dest:address:character<span class="Special"> <- </span>index-address *s, *len - *dest<span class="Special"> <- </span>copy c - *len<span class="Special"> <- </span>add *len, <span class="Constant">1</span> - <span class="muControl">reply</span> in/same-as-ingredient:<span class="Constant">0</span> -] - -<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:address:buffer, <span class="Constant">data:offset</span> - x:address:buffer<span class="Special"> <- </span>buffer-append x:address:buffer, <span class="Constant">97</span> <span class="Comment"># 'a'</span> - x:address:buffer<span class="Special"> <- </span>buffer-append x:address:buffer, <span class="Constant">98</span> <span class="Comment"># 'b'</span> - x:address:buffer<span class="Special"> <- </span>buffer-append x:address:buffer, <span class="Constant">99</span> <span class="Comment"># 'c'</span> - s2:address:array:character<span class="Special"> <- </span>get *x:address:buffer, <span class="Constant">data:offset</span> - <span class="Constant">1</span>:boolean/<span class="Special">raw <- </span>equal s1:address:array:character, s2:address:array:character - <span class="Constant">2</span>:array:character/<span class="Special">raw <- </span>copy *s2:address:array:character -<span class="Constant"> +buffer-filled</span> - x:address:buffer<span class="Special"> <- </span>buffer-append x:address:buffer, <span class="Constant">100</span> <span class="Comment"># 'd'</span> - s3:address:array:character<span class="Special"> <- </span>get *x:address:buffer, <span class="Constant">data:offset</span> - <span class="Constant">10</span>:boolean/<span class="Special">raw <- </span>equal s1:address:array:character, s3:address:array:character - <span class="Constant">11</span>:number/<span class="Special">raw <- </span>get *x:address:buffer, <span class="Constant">length:offset</span> - <span class="Constant">12</span>:array:character/<span class="Special">raw <- </span>copy *s3:address:array:character - ] - memory-should-contain [ - <span class="Comment"># before +buffer-filled</span> - <span class="Constant">1</span><span class="Special"> <- </span><span class="Constant">1</span> <span class="Comment"># no change in data pointer</span> - <span class="Constant">2</span><span class="Special"> <- </span><span class="Constant">3</span> <span class="Comment"># size of data</span> - <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">97</span> <span class="Comment"># data</span> - <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">98</span> - <span class="Constant">5</span><span class="Special"> <- </span><span class="Constant">99</span> - <span class="Comment"># in the end</span> - <span class="Constant">10</span><span class="Special"> <- </span><span class="Constant">0</span> <span class="Comment"># data pointer has grown</span> - <span class="Constant">11</span><span class="Special"> <- </span><span class="Constant">4</span> <span class="Comment"># final length</span> - <span class="Constant">12</span><span class="Special"> <- </span><span class="Constant">6</span> <span class="Comment"># but data's capacity has doubled</span> - <span class="Constant">13</span><span class="Special"> <- </span><span class="Constant">97</span> <span class="Comment"># data</span> - <span class="Constant">14</span><span class="Special"> <- </span><span class="Constant">98</span> - <span class="Constant">15</span><span class="Special"> <- </span><span class="Constant">99</span> - <span class="Constant">16</span><span class="Special"> <- </span><span class="Constant">100</span> - <span class="Constant">17</span><span class="Special"> <- </span><span class="Constant">0</span> - <span class="Constant">18</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> - x<span class="Special"> <- </span>buffer-append x, <span class="Constant">97</span> <span class="Comment"># 'a'</span> - x<span class="Special"> <- </span>buffer-append x, <span class="Constant">98</span> <span class="Comment"># 'b'</span> - x<span class="Special"> <- </span>buffer-append x, <span class="Constant">8/backspace</span> - s:address:array:character<span class="Special"> <- </span>buffer-to-array x - <span class="Constant">1</span>:array:character/<span class="Special">raw <- </span>copy *s - ] - memory-should-contain [ - <span class="Constant">1</span><span class="Special"> <- </span><span class="Constant">1</span> <span class="Comment"># length</span> - <span class="Constant">2</span><span class="Special"> <- </span><span class="Constant">97</span> <span class="Comment"># contents</span> - <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">0</span> - ] -] - -<span class="Comment"># result:address:array:character <- integer-to-decimal-string n:number</span> -<span class="muRecipe">recipe</span> integer-to-decimal-string [ - <span class="Constant">local-scope</span> - n:number<span class="Special"> <- </span><span class="Constant">next-ingredient</span> - <span class="Comment"># is it zero?</span> - <span class="Delimiter">{</span> - <span class="muControl">break-if</span> n - result:address:array:character<span class="Special"> <- </span>new <span class="Constant">[0]</span> - <span class="muControl">reply</span> result - <span class="Delimiter">}</span> - <span class="Comment"># save sign</span> - negate-result:boolean<span class="Special"> <- </span>copy <span class="Constant">0</span> - <span class="Delimiter">{</span> - negative?:boolean<span class="Special"> <- </span>lesser-than n, <span class="Constant">0</span> - <span class="muControl">break-unless</span> negative? - negate-result<span class="Special"> <- </span>copy <span class="Constant">1</span> - n<span class="Special"> <- </span>multiply n, <span class="Constant">-1</span> - <span class="Delimiter">}</span> - <span class="Comment"># add digits from right to left into intermediate buffer</span> - tmp:address:buffer<span class="Special"> <- </span>new-buffer <span class="Constant">30</span> - digit-base:number<span class="Special"> <- </span>copy <span class="Constant">48</span> <span class="Comment"># '0'</span> - <span class="Delimiter">{</span> - done?:boolean<span class="Special"> <- </span>equal n, <span class="Constant">0</span> - <span class="muControl">break-if</span> done? - n, digit:number<span class="Special"> <- </span>divide-with-remainder n, <span class="Constant">10</span> - c:character<span class="Special"> <- </span>add digit-base, digit - tmp:address:buffer<span class="Special"> <- </span>buffer-append tmp, c - <span class="muControl">loop</span> - <span class="Delimiter">}</span> - <span class="Comment"># add sign</span> - <span class="Delimiter">{</span> - <span class="muControl">break-unless</span> negate-result:boolean - tmp<span class="Special"> <- </span>buffer-append tmp, <span class="Constant">45</span> <span class="Comment"># '-'</span> - <span class="Delimiter">}</span> - <span class="Comment"># reverse buffer into string result</span> - len:number<span class="Special"> <- </span>get *tmp, <span class="Constant">length:offset</span> - buf:address:array:character<span class="Special"> <- </span>get *tmp, <span class="Constant">data:offset</span> - result:address:array:character<span class="Special"> <- </span>new <span class="Constant">character:type</span>, len - i:number<span class="Special"> <- </span>subtract len, <span class="Constant">1</span> <span class="Comment"># source index, decreasing</span> - j:number<span class="Special"> <- </span>copy <span class="Constant">0</span> <span class="Comment"># destination index, increasing</span> - <span class="Delimiter">{</span> - <span class="Comment"># while i >= 0</span> - done?:boolean<span class="Special"> <- </span>lesser-than i, <span class="Constant">0</span> - <span class="muControl">break-if</span> done? - <span class="Comment"># result[j] = tmp[i]</span> - src:character<span class="Special"> <- </span>index *buf, i - dest:address:character<span class="Special"> <- </span>index-address *result, j - *dest<span class="Special"> <- </span>copy src - i<span class="Special"> <- </span>subtract 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="muControl">reply</span> result -] - -<span class="muRecipe">recipe</span> buffer-to-array [ - <span class="Constant">local-scope</span> - in:address:buffer<span class="Special"> <- </span><span class="Constant">next-ingredient</span> - <span class="Delimiter">{</span> - <span class="Comment"># propagate null buffer</span> - <span class="muControl">break-if</span> in - <span class="muControl">reply</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:address:array:character<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 - dest:address:character<span class="Special"> <- </span>index-address *result, i - *dest<span class="Special"> <- </span>copy src - i<span class="Special"> <- </span>add i, <span class="Constant">1</span> - <span class="muControl">loop</span> - <span class="Delimiter">}</span> - <span class="muControl">reply</span> result -] - -<span class="muScenario">scenario</span> integer-to-decimal-digit-zero [ - run [ - <span class="Constant">1</span>:address:array:character/<span class="Special">raw <- </span>integer-to-decimal-string <span class="Constant">0</span> - <span class="Constant">2</span>:array:character/<span class="Special">raw <- </span>copy *<span class="Constant">1</span>:address:array:character/<span class="Special">raw</span> - ] - memory-should-contain [ - <span class="Constant">2</span>:string<span class="Special"> <- </span><span class="Constant">[0]</span> - ] -] - -<span class="muScenario">scenario</span> integer-to-decimal-digit-positive [ - run [ - <span class="Constant">1</span>:address:array:character/<span class="Special">raw <- </span>integer-to-decimal-string <span class="Constant">234</span> - <span class="Constant">2</span>:array:character/<span class="Special">raw <- </span>copy *<span class="Constant">1</span>:address:array:character/<span class="Special">raw</span> - ] - memory-should-contain [ - <span class="Constant">2</span>:string<span class="Special"> <- </span><span class="Constant">[234]</span> - ] -] - -<span class="muScenario">scenario</span> integer-to-decimal-digit-negative [ - run [ - <span class="Constant">1</span>:address:array:character/<span class="Special">raw <- </span>integer-to-decimal-string <span class="Constant">-1</span> - <span class="Constant">2</span>:array:character/<span class="Special">raw <- </span>copy *<span class="Constant">1</span>:address:array:character/<span class="Special">raw</span> - ] - memory-should-contain [ - <span class="Constant">2</span><span class="Special"> <- </span><span class="Constant">2</span> - <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">45</span> <span class="Comment"># '-'</span> - <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">49</span> <span class="Comment"># '1'</span> - ] -] - -<span class="Comment"># result:address:array:character <- string-append a:address:array:character, b:address:array:character</span> -<span class="muRecipe">recipe</span> string-append [ - <span class="Constant">local-scope</span> - <span class="Comment"># result = new character[a.length + b.length]</span> - a:address:array:character<span class="Special"> <- </span><span class="Constant">next-ingredient</span> - a-len:number<span class="Special"> <- </span>length *a - b:address:array:character<span class="Special"> <- </span><span class="Constant">next-ingredient</span> - b-len:number<span class="Special"> <- </span>length *b - result-len:number<span class="Special"> <- </span>add a-len, b-len - result:address:array:character<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> - out:address:character<span class="Special"> <- </span>index-address *result, result-idx - in:character<span class="Special"> <- </span>index *a, i - *out<span class="Special"> <- </span>copy 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> - out:address:character<span class="Special"> <- </span>index-address *result, result-idx - in:character<span class="Special"> <- </span>index *b, i - *out<span class="Special"> <- </span>copy 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="muControl">reply</span> result -] - -<span class="muScenario">scenario</span> string-append-1 [ - run [ - <span class="Constant">1</span>:address:array:character/<span class="Special">raw <- </span>new <span class="Constant">[hello,]</span> - <span class="Constant">2</span>:address:array:character/<span class="Special">raw <- </span>new <span class="Constant">[ world!]</span> - <span class="Constant">3</span>:address:array:character/<span class="Special">raw <- </span>string-append <span class="Constant">1</span>:address:array:character/<span class="Special">raw</span>, <span class="Constant">2</span>:address:array:character/<span class="Special">raw</span> - <span class="Constant">4</span>:array:character/<span class="Special">raw <- </span>copy *<span class="Constant">3</span>:address:array:character/<span class="Special">raw</span> - ] - memory-should-contain [ - <span class="Constant">4</span>:string<span class="Special"> <- </span><span class="Constant">[hello, world!]</span> - ] -] - -<span class="muScenario">scenario</span> replace-character-in-string [ - run [ - <span class="Constant">1</span>:address:array:character/<span class="Special">raw <- </span>new <span class="Constant">[abc]</span> - <span class="Constant">1</span>:address:array:character/<span class="Special">raw <- </span>string-replace <span class="Constant">1</span>:address:array:character/<span class="Special">raw</span>, <span class="Constant">98/b</span>, <span class="Constant">122/z</span> - <span class="Constant">2</span>:array:character/<span class="Special">raw <- </span>copy *<span class="Constant">1</span>:address:array:character/<span class="Special">raw</span> - ] - memory-should-contain [ - <span class="Constant">2</span>:string<span class="Special"> <- </span><span class="Constant">[azc]</span> - ] -] - -<span class="muRecipe">recipe</span> string-replace [ - <span class="Constant">local-scope</span> - s:address:array:character<span class="Special"> <- </span><span class="Constant">next-ingredient</span> - oldc:character<span class="Special"> <- </span><span class="Constant">next-ingredient</span> - newc:character<span class="Special"> <- </span><span class="Constant">next-ingredient</span> - from:number, _<span class="Special"> <- </span><span class="Constant">next-ingredient</span> <span class="Comment"># default to 0</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">reply-if</span> done?, s/same-as-ingredient:<span class="Constant">0</span> - dest:address:character<span class="Special"> <- </span>index-address *s, i - *dest<span class="Special"> <- </span>copy newc - i<span class="Special"> <- </span>add i, <span class="Constant">1</span> - s<span class="Special"> <- </span>string-replace s, oldc, newc, i - <span class="muControl">reply</span> s/same-as-ingredient:<span class="Constant">0</span> -] - -<span class="muScenario">scenario</span> replace-character-at-start [ - run [ - <span class="Constant">1</span>:address:array:character/<span class="Special">raw <- </span>new <span class="Constant">[abc]</span> - <span class="Constant">1</span>:address:array:character/<span class="Special">raw <- </span>string-replace <span class="Constant">1</span>:address:array:character/<span class="Special">raw</span>, <span class="Constant">97/a</span>, <span class="Constant">122/z</span> - <span class="Constant">2</span>:array:character/<span class="Special">raw <- </span>copy *<span class="Constant">1</span>:address:array:character/<span class="Special">raw</span> - ] - memory-should-contain [ - <span class="Constant">2</span>:string<span class="Special"> <- </span><span class="Constant">[zbc]</span> - ] -] - -<span class="muScenario">scenario</span> replace-character-at-end [ - run [ - <span class="Constant">1</span>:address:array:character/<span class="Special">raw <- </span>new <span class="Constant">[abc]</span> - <span class="Constant">1</span>:address:array:character/<span class="Special">raw <- </span>string-replace <span class="Constant">1</span>:address:array:character/<span class="Special">raw</span>, <span class="Constant">99/c</span>, <span class="Constant">122/z</span> - <span class="Constant">2</span>:array:character/<span class="Special">raw <- </span>copy *<span class="Constant">1</span>:address:array:character/<span class="Special">raw</span> - ] - memory-should-contain [ - <span class="Constant">2</span>:string<span class="Special"> <- </span><span class="Constant">[abz]</span> - ] -] - -<span class="muScenario">scenario</span> replace-character-missing [ - run [ - <span class="Constant">1</span>:address:array:character/<span class="Special">raw <- </span>new <span class="Constant">[abc]</span> - <span class="Constant">1</span>:address:array:character/<span class="Special">raw <- </span>string-replace <span class="Constant">1</span>:address:array:character/<span class="Special">raw</span>, <span class="Constant">100/d</span>, <span class="Constant">122/z</span> - <span class="Constant">2</span>:array:character/<span class="Special">raw <- </span>copy *<span class="Constant">1</span>:address:array:character/<span class="Special">raw</span> - ] - memory-should-contain [ - <span class="Constant">2</span>:string<span class="Special"> <- </span><span class="Constant">[abc]</span> - ] -] - -<span class="muScenario">scenario</span> replace-all-characters [ - run [ - <span class="Constant">1</span>:address:array:character/<span class="Special">raw <- </span>new <span class="Constant">[banana]</span> - <span class="Constant">1</span>:address:array:character/<span class="Special">raw <- </span>string-replace <span class="Constant">1</span>:address:array:character/<span class="Special">raw</span>, <span class="Constant">97/a</span>, <span class="Constant">122/z</span> - <span class="Constant">2</span>:array:character/<span class="Special">raw <- </span>copy *<span class="Constant">1</span>:address:array:character/<span class="Special">raw</span> - ] - memory-should-contain [ - <span class="Constant">2</span>:string<span class="Special"> <- </span><span class="Constant">[bznznz]</span> - ] -] - -<span class="Comment"># replace underscores in first with remaining args</span> -<span class="Comment"># result:address:array:character <- interpolate template:address:array:character, ...</span> -<span class="muRecipe">recipe</span> interpolate [ - <span class="Constant">local-scope</span> - template:address:array:character<span class="Special"> <- </span><span class="Constant">next-ingredient</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 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"># 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> - rewind-ingredients - _<span class="Special"> <- </span><span class="Constant">next-ingredient</span> <span class="Comment"># skip template</span> - result:address:array:character<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> - out:address:character<span class="Special"> <- </span>index-address *result, result-idx - *out<span class="Special"> <- </span>copy 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 - out:address:character<span class="Special"> <- </span>index-address *result, result-idx - *out<span class="Special"> <- </span>copy 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 - out:address:character<span class="Special"> <- </span>index-address *result, result-idx:number - *out<span class="Special"> <- </span>copy 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="muControl">reply</span> result -] - -<span class="muScenario">scenario</span> interpolate-works [ - run [ - <span class="Constant">1</span>:address:array:character/<span class="Special">raw <- </span>new <span class="Constant">[abc _]</span> - <span class="Constant">2</span>:address:array:character/<span class="Special">raw <- </span>new <span class="Constant">[def]</span> - <span class="Constant">3</span>:address:array:character/<span class="Special">raw <- </span>interpolate <span class="Constant">1</span>:address:array:character/<span class="Special">raw</span>, <span class="Constant">2</span>:address:array:character/<span class="Special">raw</span> - <span class="Constant">4</span>:array:character/<span class="Special">raw <- </span>copy *<span class="Constant">3</span>:address:array:character/<span class="Special">raw</span> - ] - memory-should-contain [ - <span class="Constant">4</span>:string<span class="Special"> <- </span><span class="Constant">[abc def]</span> - ] -] - -<span class="muScenario">scenario</span> interpolate-at-start [ - run [ - <span class="Constant">1</span>:address:array:character/<span class="Special">raw <- </span>new <span class="Constant">[_, hello!]</span> - <span class="Constant">2</span>:address:array:character/<span class="Special">raw <- </span>new <span class="Constant">[abc]</span> - <span class="Constant">3</span>:address:array:character/<span class="Special">raw <- </span>interpolate <span class="Constant">1</span>:address:array:character/<span class="Special">raw</span>, <span class="Constant">2</span>:address:array:character/<span class="Special">raw</span> - <span class="Constant">4</span>:array:character/<span class="Special">raw <- </span>copy *<span class="Constant">3</span>:address:array:character/<span class="Special">raw</span> - ] - memory-should-contain [ - <span class="Constant">4</span>:string<span class="Special"> <- </span><span class="Constant">[abc, hello!]</span> - <span class="Constant">16</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 [ - <span class="Constant">1</span>:address:array:character/<span class="Special">raw <- </span>new <span class="Constant">[hello, _]</span> - <span class="Constant">2</span>:address:array:character/<span class="Special">raw <- </span>new <span class="Constant">[abc]</span> - <span class="Constant">3</span>:address:array:character/<span class="Special">raw <- </span>interpolate <span class="Constant">1</span>:address:array:character/<span class="Special">raw</span>, <span class="Constant">2</span>:address:array:character/<span class="Special">raw</span> - <span class="Constant">4</span>:array:character/<span class="Special">raw <- </span>copy *<span class="Constant">3</span>:address:array:character/<span class="Special">raw</span> - ] - memory-should-contain [ - <span class="Constant">4</span>:string<span class="Special"> <- </span><span class="Constant">[hello, abc]</span> - ] -] - -<span class="Comment"># result:boolean <- space? c:character</span> -<span class="muRecipe">recipe</span> space? [ - <span class="Constant">local-scope</span> - c:character<span class="Special"> <- </span><span class="Constant">next-ingredient</span> - <span class="Comment"># most common case first</span> - result:boolean<span class="Special"> <- </span>equal c, <span class="Constant">32/space</span> - <span class="muControl">reply-if</span> result, result - result<span class="Special"> <- </span>equal c, <span class="Constant">10/newline</span> - <span class="muControl">reply-if</span> result, result - result<span class="Special"> <- </span>equal c, <span class="Constant">9/tab</span> - <span class="muControl">reply-if</span> result, result - result<span class="Special"> <- </span>equal c, <span class="Constant">13/carriage-return</span> - <span class="muControl">reply-if</span> result, 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">reply-if</span> result, result - result<span class="Special"> <- </span>equal c, <span class="Constant">12/ctrl-l</span> - <span class="muControl">reply-if</span> result, result - result<span class="Special"> <- </span>equal c, <span class="Constant">133/ctrl-0085</span> - <span class="muControl">reply-if</span> result, result - result<span class="Special"> <- </span>equal c, <span class="Constant">160/no-break-space</span> - <span class="muControl">reply-if</span> result, result - result<span class="Special"> <- </span>equal c, <span class="Constant">5760/ogham-space-mark</span> - <span class="muControl">reply-if</span> result, result - result<span class="Special"> <- </span>equal c, <span class="Constant">8192/en-quad</span> - <span class="muControl">reply-if</span> result, result - result<span class="Special"> <- </span>equal c, <span class="Constant">8193/em-quad</span> - <span class="muControl">reply-if</span> result, result - result<span class="Special"> <- </span>equal c, <span class="Constant">8194/en-space</span> - <span class="muControl">reply-if</span> result, result - result<span class="Special"> <- </span>equal c, <span class="Constant">8195/em-space</span> - <span class="muControl">reply-if</span> result, result - result<span class="Special"> <- </span>equal c, <span class="Constant">8196/three-per-em-space</span> - <span class="muControl">reply-if</span> result, result - result<span class="Special"> <- </span>equal c, <span class="Constant">8197/four-per-em-space</span> - <span class="muControl">reply-if</span> result, result - result<span class="Special"> <- </span>equal c, <span class="Constant">8198/six-per-em-space</span> - <span class="muControl">reply-if</span> result, result - result<span class="Special"> <- </span>equal c, <span class="Constant">8199/figure-space</span> - <span class="muControl">reply-if</span> result, result - result<span class="Special"> <- </span>equal c, <span class="Constant">8200/punctuation-space</span> - <span class="muControl">reply-if</span> result, result - result<span class="Special"> <- </span>equal c, <span class="Constant">8201/thin-space</span> - <span class="muControl">reply-if</span> result, result - result<span class="Special"> <- </span>equal c, <span class="Constant">8202/hair-space</span> - <span class="muControl">reply-if</span> result, result - result<span class="Special"> <- </span>equal c, <span class="Constant">8206/left-to-right</span> - <span class="muControl">reply-if</span> result, result - result<span class="Special"> <- </span>equal c, <span class="Constant">8207/right-to-left</span> - <span class="muControl">reply-if</span> result, result - result<span class="Special"> <- </span>equal c, <span class="Constant">8232/line-separator</span> - <span class="muControl">reply-if</span> result, result - result<span class="Special"> <- </span>equal c, <span class="Constant">8233/paragraph-separator</span> - <span class="muControl">reply-if</span> result, result - result<span class="Special"> <- </span>equal c, <span class="Constant">8239/narrow-no-break-space</span> - <span class="muControl">reply-if</span> result, result - result<span class="Special"> <- </span>equal c, <span class="Constant">8287/medium-mathematical-space</span> - <span class="muControl">reply-if</span> result, result - result<span class="Special"> <- </span>equal c, <span class="Constant">12288/ideographic-space</span> - <span class="muControl">reply</span> result -] - -<span class="Comment"># result:address:array:character <- trim s:address:array:character</span> -<span class="muRecipe">recipe</span> trim [ - <span class="Constant">local-scope</span> - s:address:array:character<span class="Special"> <- </span><span class="Constant">next-ingredient</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:address:array:character<span class="Special"> <- </span>new <span class="Constant">character:type</span>, <span class="Constant">0</span> - <span class="muControl">reply</span> result - <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 - dest:address:character<span class="Special"> <- </span>index-address *result, j - *dest<span class="Special"> <- </span>copy 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="muControl">reply</span> result -] - -<span class="muScenario">scenario</span> trim-unmodified [ - run [ - <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc]</span> - <span class="Constant">2</span>:address:array:character<span class="Special"> <- </span>trim <span class="Constant">1</span>:address:array:character - <span class="Constant">3</span>:array:character<span class="Special"> <- </span>copy *<span class="Constant">2</span>:address:array:character - ] - memory-should-contain [ - <span class="Constant">3</span>:string<span class="Special"> <- </span><span class="Constant">[abc]</span> - ] -] - -<span class="muScenario">scenario</span> trim-left [ - run [ - <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[ abc]</span> - <span class="Constant">2</span>:address:array:character<span class="Special"> <- </span>trim <span class="Constant">1</span>:address:array:character - <span class="Constant">3</span>:array:character<span class="Special"> <- </span>copy *<span class="Constant">2</span>:address:array:character - ] - memory-should-contain [ - <span class="Constant">3</span>:string<span class="Special"> <- </span><span class="Constant">[abc]</span> - ] -] - -<span class="muScenario">scenario</span> trim-right [ - run [ - <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc ]</span> - <span class="Constant">2</span>:address:array:character<span class="Special"> <- </span>trim <span class="Constant">1</span>:address:array:character - <span class="Constant">3</span>:array:character<span class="Special"> <- </span>copy *<span class="Constant">2</span>:address:array:character - ] - memory-should-contain [ - <span class="Constant">3</span>:string<span class="Special"> <- </span><span class="Constant">[abc]</span> - ] -] - -<span class="muScenario">scenario</span> trim-left-right [ - run [ - <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[ abc ]</span> - <span class="Constant">2</span>:address:array:character<span class="Special"> <- </span>trim <span class="Constant">1</span>:address:array:character - <span class="Constant">3</span>:array:character<span class="Special"> <- </span>copy *<span class="Constant">2</span>:address:array:character - ] - memory-should-contain [ - <span class="Constant">3</span>:string<span class="Special"> <- </span><span class="Constant">[abc]</span> - ] -] - -<span class="muScenario">scenario</span> trim-newline-tab [ - run [ - <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[ abc</span> -<span class="Constant">]</span> - <span class="Constant">2</span>:address:array:character<span class="Special"> <- </span>trim <span class="Constant">1</span>:address:array:character - <span class="Constant">3</span>:array:character<span class="Special"> <- </span>copy *<span class="Constant">2</span>:address:array:character - ] - memory-should-contain [ - <span class="Constant">3</span>:string<span class="Special"> <- </span><span class="Constant">[abc]</span> - ] -] - -<span class="Comment"># next-index:number <- find-next text:address:array:character, pattern:character, idx:number</span> -<span class="muRecipe">recipe</span> find-next [ - <span class="Constant">local-scope</span> - text:address:array:character<span class="Special"> <- </span><span class="Constant">next-ingredient</span> - pattern:character<span class="Special"> <- </span><span class="Constant">next-ingredient</span> - idx:number<span class="Special"> <- </span><span class="Constant">next-ingredient</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">reply</span> idx -] - -<span class="muScenario">scenario</span> string-find-next [ - run [ - <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[a/b]</span> - <span class="Constant">2</span>:number<span class="Special"> <- </span>find-next <span class="Constant">1</span>:address:array:character, <span class="Constant">47/slash</span>, <span class="Constant">0/start-index</span> - ] - memory-should-contain [ - <span class="Constant">2</span><span class="Special"> <- </span><span class="Constant">1</span> - ] -] - -<span class="muScenario">scenario</span> string-find-next-empty [ - run [ - <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[]</span> - <span class="Constant">2</span>:number<span class="Special"> <- </span>find-next <span class="Constant">1</span>:address:array:character, <span class="Constant">47/slash</span>, <span class="Constant">0/start-index</span> - ] - memory-should-contain [ - <span class="Constant">2</span><span class="Special"> <- </span><span class="Constant">0</span> - ] -] - -<span class="muScenario">scenario</span> string-find-next-initial [ - run [ - <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[/abc]</span> - <span class="Constant">2</span>:number<span class="Special"> <- </span>find-next <span class="Constant">1</span>:address:array:character, <span class="Constant">47/slash</span>, <span class="Constant">0/start-index</span> - ] - memory-should-contain [ - <span class="Constant">2</span><span class="Special"> <- </span><span class="Constant">0</span> <span class="Comment"># prefix match</span> - ] -] - -<span class="muScenario">scenario</span> string-find-next-final [ - run [ - <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc/]</span> - <span class="Constant">2</span>:number<span class="Special"> <- </span>find-next <span class="Constant">1</span>:address:array:character, <span class="Constant">47/slash</span>, <span class="Constant">0/start-index</span> - ] - memory-should-contain [ - <span class="Constant">2</span><span class="Special"> <- </span><span class="Constant">3</span> <span class="Comment"># suffix match</span> - ] -] - -<span class="muScenario">scenario</span> string-find-next-missing [ - run [ - <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc]</span> - <span class="Constant">2</span>:number<span class="Special"> <- </span>find-next <span class="Constant">1</span>:address:array:character, <span class="Constant">47/slash</span>, <span class="Constant">0/start-index</span> - ] - memory-should-contain [ - <span class="Constant">2</span><span class="Special"> <- </span><span class="Constant">3</span> <span class="Comment"># no match</span> - ] -] - -<span class="muScenario">scenario</span> string-find-next-invalid-index [ - run [ - <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc]</span> - <span class="Constant">2</span>:number<span class="Special"> <- </span>find-next <span class="Constant">1</span>:address:array:character, <span class="Constant">47/slash</span>, <span class="Constant">4/start-index</span> - ] - memory-should-contain [ - <span class="Constant">2</span><span class="Special"> <- </span><span class="Constant">4</span> <span class="Comment"># no change</span> - ] -] - -<span class="muScenario">scenario</span> string-find-next-first [ - run [ - <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[ab/c/]</span> - <span class="Constant">2</span>:number<span class="Special"> <- </span>find-next <span class="Constant">1</span>:address:array:character, <span class="Constant">47/slash</span>, <span class="Constant">0/start-index</span> - ] - memory-should-contain [ - <span class="Constant">2</span><span class="Special"> <- </span><span class="Constant">2</span> <span class="Comment"># first '/' of multiple</span> - ] -] - -<span class="muScenario">scenario</span> string-find-next-second [ - run [ - <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[ab/c/]</span> - <span class="Constant">2</span>:number<span class="Special"> <- </span>find-next <span class="Constant">1</span>:address:array:character, <span class="Constant">47/slash</span>, <span class="Constant">3/start-index</span> - ] - memory-should-contain [ - <span class="Constant">2</span><span class="Special"> <- </span><span class="Constant">4</span> <span class="Comment"># second '/' of multiple</span> - ] -] - -<span class="Comment"># next-index:number <- find-substring text:address:array:character, pattern:address:array:character, idx:number</span> -<span class="Comment"># like find-next, but searches for multiple characters</span> -<span class="Comment"># fairly dumb algorithm</span> -<span class="muRecipe">recipe</span> find-substring [ - <span class="Constant">local-scope</span> - text:address:array:character<span class="Special"> <- </span><span class="Constant">next-ingredient</span> - pattern:address:array:character<span class="Special"> <- </span><span class="Constant">next-ingredient</span> - idx:number<span class="Special"> <- </span><span class="Constant">next-ingredient</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 for substrings 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">reply</span> idx -] - -<span class="muScenario">scenario</span> find-substring-1 [ - run [ - <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc]</span> - <span class="Constant">2</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[bc]</span> - <span class="Constant">3</span>:number<span class="Special"> <- </span>find-substring <span class="Constant">1</span>:address:array:character, <span class="Constant">2</span>:address:array:character, <span class="Constant">0</span> - ] - memory-should-contain [ - <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">1</span> - ] -] - -<span class="muScenario">scenario</span> find-substring-2 [ - run [ - <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abcd]</span> - <span class="Constant">2</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[bc]</span> - <span class="Constant">3</span>:number<span class="Special"> <- </span>find-substring <span class="Constant">1</span>:address:array:character, <span class="Constant">2</span>:address:array:character, <span class="Constant">1</span> - ] - memory-should-contain [ - <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">1</span> - ] -] - -<span class="muScenario">scenario</span> find-substring-no-match [ - run [ - <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc]</span> - <span class="Constant">2</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[bd]</span> - <span class="Constant">3</span>:number<span class="Special"> <- </span>find-substring <span class="Constant">1</span>:address:array:character, <span class="Constant">2</span>:address:array:character, <span class="Constant">0</span> - ] - memory-should-contain [ - <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">3</span> <span class="Comment"># not found</span> - ] -] - -<span class="muScenario">scenario</span> find-substring-suffix-match [ - run [ - <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abcd]</span> - <span class="Constant">2</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[cd]</span> - <span class="Constant">3</span>:number<span class="Special"> <- </span>find-substring <span class="Constant">1</span>:address:array:character, <span class="Constant">2</span>:address:array:character, <span class="Constant">0</span> - ] - memory-should-contain [ - <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">2</span> - ] -] - -<span class="muScenario">scenario</span> find-substring-suffix-match-2 [ - run [ - <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abcd]</span> - <span class="Constant">2</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[cde]</span> - <span class="Constant">3</span>:number<span class="Special"> <- </span>find-substring <span class="Constant">1</span>:address:array:character, <span class="Constant">2</span>:address:array:character, <span class="Constant">0</span> - ] - memory-should-contain [ - <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">4</span> <span class="Comment"># not found</span> - ] -] - -<span class="Comment"># result:boolean <- match-at text:address:array:character, pattern:address:array:character, idx:number</span> -<span class="Comment"># checks if substring matches at index 'idx'</span> -<span class="muRecipe">recipe</span> match-at [ - <span class="Constant">local-scope</span> - text:address:array:character<span class="Special"> <- </span><span class="Constant">next-ingredient</span> - pattern:address:array:character<span class="Special"> <- </span><span class="Constant">next-ingredient</span> - idx:number<span class="Special"> <- </span><span class="Constant">next-ingredient</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">reply</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">reply</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">reply</span> <span class="Constant">1/found</span> -] - -<span class="muScenario">scenario</span> match-at-checks-substring-at-index [ - run [ - <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc]</span> - <span class="Constant">2</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[ab]</span> - <span class="Constant">3</span>:boolean<span class="Special"> <- </span>match-at <span class="Constant">1</span>:address:array:character, <span class="Constant">2</span>:address:array:character, <span class="Constant">0</span> - ] - memory-should-contain [ - <span class="Constant">3</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">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc]</span> - <span class="Constant">3</span>:boolean<span class="Special"> <- </span>match-at <span class="Constant">1</span>:address:array:character, <span class="Constant">1</span>:address:array:character, <span class="Constant">0</span> - ] - memory-should-contain [ - <span class="Constant">3</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">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc]</span> - <span class="Constant">2</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[a]</span> - <span class="Constant">3</span>:boolean<span class="Special"> <- </span>match-at <span class="Constant">1</span>:address:array:character, <span class="Constant">2</span>:address:array:character, <span class="Constant">4</span> - ] - memory-should-contain [ - <span class="Constant">3</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">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc]</span> - <span class="Constant">2</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[]</span> - <span class="Constant">3</span>:boolean<span class="Special"> <- </span>match-at <span class="Constant">1</span>:address:array:character, <span class="Constant">2</span>:address:array:character, <span class="Constant">0</span> - ] - memory-should-contain [ - <span class="Constant">3</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">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc]</span> - <span class="Constant">2</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[]</span> - <span class="Constant">3</span>:boolean<span class="Special"> <- </span>match-at <span class="Constant">1</span>:address:array:character, <span class="Constant">2</span>:address:array:character, <span class="Constant">4</span> - ] - memory-should-contain [ - <span class="Constant">3</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">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[]</span> - <span class="Constant">2</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc]</span> - <span class="Constant">3</span>:boolean<span class="Special"> <- </span>match-at <span class="Constant">1</span>:address:array:character, <span class="Constant">2</span>:address:array:character, <span class="Constant">0</span> - ] - memory-should-contain [ - <span class="Constant">3</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">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[]</span> - <span class="Constant">3</span>:boolean<span class="Special"> <- </span>match-at <span class="Constant">1</span>:address:array:character, <span class="Constant">1</span>:address:array:character, <span class="Constant">0</span> - ] - memory-should-contain [ - <span class="Constant">3</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">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc]</span> - <span class="Constant">2</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[bc]</span> - <span class="Constant">3</span>:boolean<span class="Special"> <- </span>match-at <span class="Constant">1</span>:address:array:character, <span class="Constant">2</span>:address:array:character, <span class="Constant">1</span> - ] - memory-should-contain [ - <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">1</span> <span class="Comment"># matches inner substring</span> - ] -] - -<span class="muScenario">scenario</span> match-at-inside-bounds-2 [ - run [ - <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc]</span> - <span class="Constant">2</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[bc]</span> - <span class="Constant">3</span>:boolean<span class="Special"> <- </span>match-at <span class="Constant">1</span>:address:array:character, <span class="Constant">2</span>:address:array:character, <span class="Constant">0</span> - ] - memory-should-contain [ - <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">0</span> <span class="Comment"># no match</span> - ] -] - -<span class="Comment"># result:address:array:address:array:character <- split s:address:array:character, delim:character</span> -<span class="muRecipe">recipe</span> split [ - <span class="Constant">local-scope</span> - s:address:array:character<span class="Special"> <- </span><span class="Constant">next-ingredient</span> - delim:character<span class="Special"> <- </span><span class="Constant">next-ingredient</span> - <span class="Comment"># empty string? 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:address:array:address:array:character<span class="Special"> <- </span>new <span class="Constant">location:type</span>, <span class="Constant">0</span> - <span class="muControl">reply</span> result - <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:address:array:address:array:character<span class="Special"> <- </span>new <span class="Constant">location:type</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:address:array:character<span class="Special"> <- </span>index-address *result, curr-result - *dest<span class="Special"> <- </span>string-copy s, start, end - <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="muControl">reply</span> result -] - -<span class="muScenario">scenario</span> string-split-1 [ - run [ - <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[a/b]</span> - <span class="Constant">2</span>:address:array:address:array:character<span class="Special"> <- </span>split <span class="Constant">1</span>:address:array:character, <span class="Constant">47/slash</span> - <span class="Constant">3</span>:number<span class="Special"> <- </span>length *<span class="Constant">2</span>:address:array:address:array:character - <span class="Constant">4</span>:address:array:character<span class="Special"> <- </span>index *<span class="Constant">2</span>:address:array:address:array:character, <span class="Constant">0</span> - <span class="Constant">5</span>:address:array:character<span class="Special"> <- </span>index *<span class="Constant">2</span>:address:array:address:array:character, <span class="Constant">1</span> - <span class="Constant">10</span>:array:character<span class="Special"> <- </span>copy *<span class="Constant">4</span>:address:array:character - <span class="Constant">20</span>:array:character<span class="Special"> <- </span>copy *<span class="Constant">5</span>:address:array:character - ] - memory-should-contain [ - <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">2</span> <span class="Comment"># length of result</span> - <span class="Constant">10</span>:string<span class="Special"> <- </span><span class="Constant">[a]</span> - <span class="Constant">20</span>:string<span class="Special"> <- </span><span class="Constant">[b]</span> - ] -] - -<span class="muScenario">scenario</span> string-split-2 [ - run [ - <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[a/b/c]</span> - <span class="Constant">2</span>:address:array:address:array:character<span class="Special"> <- </span>split <span class="Constant">1</span>:address:array:character, <span class="Constant">47/slash</span> - <span class="Constant">3</span>:number<span class="Special"> <- </span>length *<span class="Constant">2</span>:address:array:address:array:character - <span class="Constant">4</span>:address:array:character<span class="Special"> <- </span>index *<span class="Constant">2</span>:address:array:address:array:character, <span class="Constant">0</span> - <span class="Constant">5</span>:address:array:character<span class="Special"> <- </span>index *<span class="Constant">2</span>:address:array:address:array:character, <span class="Constant">1</span> - <span class="Constant">6</span>:address:array:character<span class="Special"> <- </span>index *<span class="Constant">2</span>:address:array:address:array:character, <span class="Constant">2</span> - <span class="Constant">10</span>:array:character<span class="Special"> <- </span>copy *<span class="Constant">4</span>:address:array:character - <span class="Constant">20</span>:array:character<span class="Special"> <- </span>copy *<span class="Constant">5</span>:address:array:character - <span class="Constant">30</span>:array:character<span class="Special"> <- </span>copy *<span class="Constant">6</span>:address:array:character - ] - memory-should-contain [ - <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">3</span> <span class="Comment"># length of result</span> - <span class="Constant">10</span>:string<span class="Special"> <- </span><span class="Constant">[a]</span> - <span class="Constant">20</span>:string<span class="Special"> <- </span><span class="Constant">[b]</span> - <span class="Constant">30</span>:string<span class="Special"> <- </span><span class="Constant">[c]</span> - ] -] - -<span class="muScenario">scenario</span> string-split-missing [ - run [ - <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc]</span> - <span class="Constant">2</span>:address:array:address:array:character<span class="Special"> <- </span>split <span class="Constant">1</span>:address:array:character, <span class="Constant">47/slash</span> - <span class="Constant">3</span>:number<span class="Special"> <- </span>length *<span class="Constant">2</span>:address:array:address:array:character - <span class="Constant">4</span>:address:array:character<span class="Special"> <- </span>index *<span class="Constant">2</span>:address:array:address:array:character, <span class="Constant">0</span> - <span class="Constant">10</span>:array:character<span class="Special"> <- </span>copy *<span class="Constant">4</span>:address:array:character - ] - memory-should-contain [ - <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">1</span> <span class="Comment"># length of result</span> - <span class="Constant">10</span>:string<span class="Special"> <- </span><span class="Constant">[abc]</span> - ] -] - -<span class="muScenario">scenario</span> string-split-empty [ - run [ - <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[]</span> - <span class="Constant">2</span>:address:array:address:array:character<span class="Special"> <- </span>split <span class="Constant">1</span>:address:array:character, <span class="Constant">47/slash</span> - <span class="Constant">3</span>:number<span class="Special"> <- </span>length *<span class="Constant">2</span>:address:array:address:array:character - ] - memory-should-contain [ - <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">0</span> <span class="Comment"># empty result</span> - ] -] - -<span class="muScenario">scenario</span> string-split-empty-piece [ - run [ - <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[a/b//c]</span> - <span class="Constant">2</span>:address:array:address:array:character<span class="Special"> <- </span>split <span class="Constant">1</span>:address:array:character, <span class="Constant">47/slash</span> - <span class="Constant">3</span>:number<span class="Special"> <- </span>length *<span class="Constant">2</span>:address:array:address:array:character - <span class="Constant">4</span>:address:array:character<span class="Special"> <- </span>index *<span class="Constant">2</span>:address:array:address:array:character, <span class="Constant">0</span> - <span class="Constant">5</span>:address:array:character<span class="Special"> <- </span>index *<span class="Constant">2</span>:address:array:address:array:character, <span class="Constant">1</span> - <span class="Constant">6</span>:address:array:character<span class="Special"> <- </span>index *<span class="Constant">2</span>:address:array:address:array:character, <span class="Constant">2</span> - <span class="Constant">7</span>:address:array:character<span class="Special"> <- </span>index *<span class="Constant">2</span>:address:array:address:array:character, <span class="Constant">3</span> - <span class="Constant">10</span>:array:character<span class="Special"> <- </span>copy *<span class="Constant">4</span>:address:array:character - <span class="Constant">20</span>:array:character<span class="Special"> <- </span>copy *<span class="Constant">5</span>:address:array:character - <span class="Constant">30</span>:array:character<span class="Special"> <- </span>copy *<span class="Constant">6</span>:address:array:character - <span class="Constant">40</span>:array:character<span class="Special"> <- </span>copy *<span class="Constant">7</span>:address:array:character - ] - memory-should-contain [ - <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">4</span> <span class="Comment"># length of result</span> - <span class="Constant">10</span>:string<span class="Special"> <- </span><span class="Constant">[a]</span> - <span class="Constant">20</span>:string<span class="Special"> <- </span><span class="Constant">[b]</span> - <span class="Constant">30</span>:string<span class="Special"> <- </span><span class="Constant">[]</span> - <span class="Constant">40</span>:string<span class="Special"> <- </span><span class="Constant">[c]</span> - ] -] - -<span class="Comment"># x:address:array:character, y:address:array:character <- split-first text:address:array:character, delim:character</span> -<span class="muRecipe">recipe</span> split-first [ - <span class="Constant">local-scope</span> - text:address:array:character<span class="Special"> <- </span><span class="Constant">next-ingredient</span> - delim:character<span class="Special"> <- </span><span class="Constant">next-ingredient</span> - <span class="Comment"># empty string? return empty strings</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">reply</span> x, y - <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>string-copy 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>string-copy text, idx, len - <span class="muControl">reply</span> x, y -] - -<span class="muScenario">scenario</span> string-split-first [ - run [ - <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[a/b]</span> - <span class="Constant">2</span>:address:array:character, <span class="Constant">3</span>:address:array:character<span class="Special"> <- </span>split-first <span class="Constant">1</span>:address:array:character, <span class="Constant">47/slash</span> - <span class="Constant">10</span>:array:character<span class="Special"> <- </span>copy *<span class="Constant">2</span>:address:array:character - <span class="Constant">20</span>:array:character<span class="Special"> <- </span>copy *<span class="Constant">3</span>:address:array:character - ] - memory-should-contain [ - <span class="Constant">10</span>:string<span class="Special"> <- </span><span class="Constant">[a]</span> - <span class="Constant">20</span>:string<span class="Special"> <- </span><span class="Constant">[b]</span> - ] -] - -<span class="Comment"># result:address:array:character <- string-copy buf:address:array:character, start:number, end:number</span> -<span class="Comment"># todo: make this generic</span> -<span class="muRecipe">recipe</span> string-copy [ - <span class="Constant">local-scope</span> - buf:address:array:character<span class="Special"> <- </span><span class="Constant">next-ingredient</span> - start:number<span class="Special"> <- </span><span class="Constant">next-ingredient</span> - end:number<span class="Special"> <- </span><span class="Constant">next-ingredient</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 - dest:address:character<span class="Special"> <- </span>index-address *result, dest-idx - *dest<span class="Special"> <- </span>copy 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="muControl">reply</span> result -] - -<span class="muScenario">scenario</span> string-copy-copies-substring [ - run [ - <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc]</span> - <span class="Constant">2</span>:address:array:character<span class="Special"> <- </span>string-copy <span class="Constant">1</span>:address:array:character, <span class="Constant">1</span>, <span class="Constant">3</span> - <span class="Constant">3</span>:array:character<span class="Special"> <- </span>copy *<span class="Constant">2</span>:address:array:character - ] - memory-should-contain [ - <span class="Constant">3</span>:string<span class="Special"> <- </span><span class="Constant">[bc]</span> - ] -] - -<span class="muScenario">scenario</span> string-copy-out-of-bounds [ - run [ - <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc]</span> - <span class="Constant">2</span>:address:array:character<span class="Special"> <- </span>string-copy <span class="Constant">1</span>:address:array:character, <span class="Constant">2</span>, <span class="Constant">4</span> - <span class="Constant">3</span>:array:character<span class="Special"> <- </span>copy *<span class="Constant">2</span>:address:array:character - ] - memory-should-contain [ - <span class="Constant">3</span>:string<span class="Special"> <- </span><span class="Constant">[c]</span> - ] -] - -<span class="muScenario">scenario</span> string-copy-out-of-bounds-2 [ - run [ - <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc]</span> - <span class="Constant">2</span>:address:array:character<span class="Special"> <- </span>string-copy <span class="Constant">1</span>:address:array:character, <span class="Constant">3</span>, <span class="Constant">3</span> - <span class="Constant">3</span>:array:character<span class="Special"> <- </span>copy *<span class="Constant">2</span>:address:array:character - ] - memory-should-contain [ - <span class="Constant">3</span>:string<span class="Special"> <- </span><span class="Constant">[]</span> - ] -] - -<span class="muRecipe">recipe</span> min [ - <span class="Constant">local-scope</span> - x:number<span class="Special"> <- </span><span class="Constant">next-ingredient</span> - y:number<span class="Special"> <- </span><span class="Constant">next-ingredient</span> - <span class="Delimiter">{</span> - return-x?:boolean<span class="Special"> <- </span>lesser-than x, y - <span class="muControl">break-if</span> return-x? - <span class="muControl">reply</span> y - <span class="Delimiter">}</span> - <span class="muControl">reply</span> x -] - -<span class="muRecipe">recipe</span> max [ - <span class="Constant">local-scope</span> - x:number<span class="Special"> <- </span><span class="Constant">next-ingredient</span> - y:number<span class="Special"> <- </span><span class="Constant">next-ingredient</span> - <span class="Delimiter">{</span> - return-x?:boolean<span class="Special"> <- </span>greater-than x, y - <span class="muControl">break-if</span> return-x? - <span class="muControl">reply</span> y - <span class="Delimiter">}</span> - <span class="muControl">reply</span> x -] -</pre> -</body> -</html> -<!-- vim: set foldmethod=manual : --> |