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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
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<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<title>Mu - 066stream.mu</title>
<meta name="Generator" content="Vim/7.4">
<meta name="plugin-version" content="vim7.4_v1">
<meta name="syntax" content="none">
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* { font-size: 1.05em; }
.muRecipe { color: #ff8700; }
.muData { color: #ffff00; }
.Comment { color: #9090ff; }
.Constant { color: #00a0a0; }
.Special { color: #ff6060; }
.muControl { color: #c0a020; }
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<pre id='vimCodeElement'>
<span class="Comment"># new type to help incrementally read strings</span>
<span class="muData">container</span> stream [
  index:number
  data:address:array:character
]

<span class="muRecipe">recipe</span> new-stream [
  <span class="Constant">local-scope</span>
  result:address:stream<span class="Special"> &lt;- </span>new <span class="Constant">stream:type</span>
  i:address:number<span class="Special"> &lt;- </span>get-address *result, <span class="Constant">index:offset</span>
  *i<span class="Special"> &lt;- </span>copy <span class="Constant">0</span>
  d:address:address:array:character<span class="Special"> &lt;- </span>get-address *result, <span class="Constant">data:offset</span>
  *d<span class="Special"> &lt;- </span><span class="Constant">next-ingredient</span>
  <span class="muControl">reply</span> result
]

<span class="muRecipe">recipe</span> rewind-stream [
  <span class="Constant">local-scope</span>
  in:address:stream<span class="Special"> &lt;- </span><span class="Constant">next-ingredient</span>
  x:address:number<span class="Special"> &lt;- </span>get-address *in, <span class="Constant">index:offset</span>
  *x<span class="Special"> &lt;- </span>copy <span class="Constant">0</span>
  <span class="muControl">reply</span> in/same-as-arg:<span class="Constant">0</span>
]

<span class="muRecipe">recipe</span> read-line [
  <span class="Constant">local-scope</span>
  in:address:stream<span class="Special"> &lt;- </span><span class="Constant">next-ingredient</span>
  idx:address:number<span class="Special"> &lt;- </span>get-address *in, <span class="Constant">index:offset</span>
  s:address:array:character<span class="Special"> &lt;- </span>get *in, <span class="Constant">data:offset</span>
  next-idx:number<span class="Special"> &lt;- </span>find-next s, <span class="Constant">10/newline</span>, *idx
  result:address:array:character<span class="Special"> &lt;- </span>string-copy s, *idx, next-idx
  *idx<span class="Special"> &lt;- </span>add next-idx, <span class="Constant">1</span>  <span class="Comment"># skip newline</span>
  <span class="muControl">reply</span> result
]

<span class="muRecipe">recipe</span> end-of-stream? [
  <span class="Constant">local-scope</span>
  in:address:stream<span class="Special"> &lt;- </span><span class="Constant">next-ingredient</span>
  idx:address:number<span class="Special"> &lt;- </span>get *in, <span class="Constant">index:offset</span>
  s:address:array:character<span class="Special"> &lt;- </span>get *in, <span class="Constant">data:offset</span>
  len:number<span class="Special"> &lt;- </span>length *s
  result:boolean<span class="Special"> &lt;- </span>greater-or-equal idx, len
  <span class="muControl">reply</span> result
]
</pre>
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