2996

author: Kartik K. Agaram <vc@akkartik.com> 2016-05-21 17:44:53 -0700
committer: Kartik K. Agaram <vc@akkartik.com> 2016-05-21 17:44:53 -0700
commit: 2f02189ddcdeb7d25b0ca9bd5b955b764d41a1a7 (patch)
tree: 7c2e8b6e37ae3201dc01e90bcb390ee60b7f4a77 /html/053dilated_reagent.cc.html
parent: 61c025b11ed4ddd002f09f061fd77c75d8b6d0ba (diff)
download: mu-2f02189ddcdeb7d25b0ca9bd5b955b764d41a1a7.tar.gz
1 files changed, 0 insertions, 172 deletions
diff --git a/html/053dilated_reagent.cc.html b/html/053dilated_reagent.cc.html
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-<head>
-<meta http-equiv="content-type" content="text/html; charset=UTF-8">
-<title>Mu - 053dilated_reagent.cc</title>
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-
--->
-</script>
-</head>
-<body>
-<pre id='vimCodeElement'>
-<span class="Comment">//: An alternative syntax for reagents that permits whitespace in properties,</span>
-<span class="Comment">//: grouped by brackets. We'll use this ability in the next layer, when we</span>
-<span class="Comment">//: generalize types from lists to trees of properties.</span>
-
-<span class="Delimiter">:(scenarios load)</span>
-<span class="Delimiter">:(scenario dilated_reagent)</span>
-def main [
-  <span class="Delimiter">{</span><span class="Constant">1</span>: number<span class="Delimiter">,</span> foo: bar<span class="Delimiter">}</span><span class="Special"> &lt;- </span>copy <span class="Constant">34</span>
-]
-<span class="traceContains">+parse:   product: {1: &quot;number&quot;, &quot;foo&quot;: &quot;bar&quot;}</span>
-
-<span class="Delimiter">:(scenario load_trailing_space_after_curly_bracket)</span>
-def main [
-<span class="PreProc">  </span><span class="Comment"># line below has a space at the end</span>
-  <span class="Delimiter">{</span><span class="Error"> </span>
-]
-<span class="Comment"># successfully parsed</span>
-
-<span class="Delimiter">:(scenarios run)</span>
-<span class="Delimiter">:(scenario dilated_reagent_with_comment)</span>
-def main [
-  <span class="Delimiter">{</span><span class="Constant">1</span>: number<span class="Delimiter">,</span> foo: bar<span class="Delimiter">}</span><span class="Special"> &lt;- </span>copy <span class="Constant">34</span>  <span class="Comment"># test comment</span>
-]
-<span class="traceContains">+parse:   product: {1: &quot;number&quot;, &quot;foo&quot;: &quot;bar&quot;}</span>
-$error: <span class="Constant">0</span>
-
-<span class="Delimiter">:(scenario dilated_reagent_with_comment_immediately_following)</span>
-def main [
-  <span class="Constant">1</span>:number<span class="Special"> &lt;- </span>copy <span class="Delimiter">{</span><span class="Constant">34</span>: literal<span class="Delimiter">}</span>  <span class="Comment"># test comment</span>
-]
-$error: <span class="Constant">0</span>
-
-<span class="Comment">//: First augment next_word to group balanced brackets together.</span>
-
-<span class="Delimiter">:(before &quot;End next_word Special-cases&quot;)</span>
-<span class="Normal">if</span> <span class="Delimiter">(</span>in<span class="Delimiter">.</span>peek<span class="Delimiter">()</span> == <span class="Constant">'('</span><span class="Delimiter">)</span>
-  <span class="Identifier">return</span> slurp_balanced_bracket<span class="Delimiter">(</span>in<span class="Delimiter">);</span>
-<span class="Comment">// treat curlies mostly like parens, but don't mess up labels</span>
-<span class="Normal">if</span> <span class="Delimiter">(</span>start_of_dilated_reagent<span class="Delimiter">(</span>in<span class="Delimiter">))</span>
-  <span class="Identifier">return</span> slurp_balanced_bracket<span class="Delimiter">(</span>in<span class="Delimiter">);</span>
-
-<span class="Delimiter">:(code)</span>
-<span class="Comment">// A curly is considered a label if it's the last thing on a line. Dilated</span>
-<span class="Comment">// reagents should remain all on one line.</span>
-<span class="Normal">bool</span> start_of_dilated_reagent<span class="Delimiter">(</span>istream&amp; in<span class="Delimiter">)</span> <span class="Delimiter">{</span>
-  <span class="Normal">if</span> <span class="Delimiter">(</span>in<span class="Delimiter">.</span>peek<span class="Delimiter">()</span> != <span class="Constant">'{'</span><span class="Delimiter">)</span> <span class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span>
-  <span class="Normal">int</span> pos = in<span class="Delimiter">.</span>tellg<span class="Delimiter">();</span>
-  in<span class="Delimiter">.</span>get<span class="Delimiter">();</span>  <span class="Comment">// slurp '{'</span>
-  skip_whitespace_but_not_newline<span class="Delimiter">(</span>in<span class="Delimiter">);</span>
-  <span class="Normal">char</span> next = in<span class="Delimiter">.</span>peek<span class="Delimiter">();</span>
-  in<span class="Delimiter">.</span>seekg<span class="Delimiter">(</span>pos<span class="Delimiter">);</span>
-  <span class="Identifier">return</span> next != <span class="cSpecial">'\n'</span><span class="Delimiter">;</span>
-<span class="Delimiter">}</span>
-
-<span class="Comment">// Assume the first letter is an open bracket, and read everything until the</span>
-<span class="Comment">// matching close bracket.</span>
-<span class="Comment">// We balance {} () and []. And we skip one character after '\'.</span>
-string slurp_balanced_bracket<span class="Delimiter">(</span>istream&amp; in<span class="Delimiter">)</span> <span class="Delimiter">{</span>
-  ostringstream result<span class="Delimiter">;</span>
-  <span class="Normal">char</span> c<span class="Delimiter">;</span>
-  list&lt;<span class="Normal">char</span>&gt; open_brackets<span class="Delimiter">;</span>
-  <span class="Normal">while</span> <span class="Delimiter">(</span>in &gt;&gt; c<span class="Delimiter">)</span> <span class="Delimiter">{</span>
-    <span class="Normal">if</span> <span class="Delimiter">(</span>c == <span class="cSpecial">'\\'</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-      <span class="Comment">// always silently skip the next character</span>
-      result &lt;&lt; c<span class="Delimiter">;</span>
-      <span class="Normal">if</span> <span class="Delimiter">(</span>!<span class="Delimiter">(</span>in &gt;&gt; c<span class="Delimiter">))</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
-      result &lt;&lt; c<span class="Delimiter">;</span>
-      <span class="Identifier">continue</span><span class="Delimiter">;</span>
-    <span class="Delimiter">}</span>
-    <span class="Normal">if</span> <span class="Delimiter">(</span>c == <span class="Constant">'('</span><span class="Delimiter">)</span> open_brackets<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>c<span class="Delimiter">);</span>
-    <span class="Normal">if</span> <span class="Delimiter">(</span>c == <span class="Constant">')'</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-      assert<span class="Delimiter">(</span>open_brackets<span class="Delimiter">.</span>back<span class="Delimiter">()</span> == <span class="Constant">'('</span><span class="Delimiter">);</span>
-      open_brackets<span class="Delimiter">.</span>pop_back<span class="Delimiter">();</span>
-    <span class="Delimiter">}</span>
-    <span class="Normal">if</span> <span class="Delimiter">(</span>c == <span class="Constant">'['</span><span class="Delimiter">)</span> open_brackets<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>c<span class="Delimiter">);</span>
-    <span class="Normal">if</span> <span class="Delimiter">(</span>c == <span class="Constant">']'</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-      assert<span class="Delimiter">(</span>open_brackets<span class="Delimiter">.</span>back<span class="Delimiter">()</span> == <span class="Constant">'['</span><span class="Delimiter">);</span>
-      open_brackets<span class="Delimiter">.</span>pop_back<span class="Delimiter">();</span>
-    <span class="Delimiter">}</span>
-    <span class="Normal">if</span> <span class="Delimiter">(</span>c == <span class="Constant">'{'</span><span class="Delimiter">)</span> open_brackets<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>c<span class="Delimiter">);</span>
-    <span class="Normal">if</span> <span class="Delimiter">(</span>c == <span class="Constant">'}'</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-      assert<span class="Delimiter">(</span>open_brackets<span class="Delimiter">.</span>back<span class="Delimiter">()</span> == <span class="Constant">'{'</span><span class="Delimiter">);</span>
-      open_brackets<span class="Delimiter">.</span>pop_back<span class="Delimiter">();</span>
-    <span class="Delimiter">}</span>
-    result &lt;&lt; c<span class="Delimiter">;</span>
-    <span class="Normal">if</span> <span class="Delimiter">(</span>open_brackets<span class="Delimiter">.</span>empty<span class="Delimiter">())</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
-  <span class="Delimiter">}</span>
-  skip_whitespace_and_comments_but_not_newline<span class="Delimiter">(</span>in<span class="Delimiter">);</span>
-  <span class="Identifier">return</span> result<span class="Delimiter">.</span>str<span class="Delimiter">();</span>
-<span class="Delimiter">}</span>
-
-<span class="Delimiter">:(after &quot;Parsing reagent(string s)&quot;)</span>
-<span class="Normal">if</span> <span class="Delimiter">(</span>s<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)</span> == <span class="Constant">'{'</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-  assert<span class="Delimiter">(</span>properties<span class="Delimiter">.</span>empty<span class="Delimiter">());</span>
-  istringstream in<span class="Delimiter">(</span>s<span class="Delimiter">);</span>
-  in &gt;&gt; std::noskipws<span class="Delimiter">;</span>
-  in<span class="Delimiter">.</span>get<span class="Delimiter">();</span>  <span class="Comment">// skip '{'</span>
-  name = slurp_key<span class="Delimiter">(</span>in<span class="Delimiter">);</span>
-  <span class="Normal">if</span> <span class="Delimiter">(</span>name<span class="Delimiter">.</span>empty<span class="Delimiter">())</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; <span class="Constant">&quot;invalid reagent &quot;</span> &lt;&lt; s &lt;&lt; <span class="Constant">&quot; without a name</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
-    <span class="Identifier">return</span><span class="Delimiter">;</span>
-  <span class="Delimiter">}</span>
-  <span class="Normal">if</span> <span class="Delimiter">(</span>name == <span class="Constant">&quot;}&quot;</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; <span class="Constant">&quot;invalid empty reagent &quot;</span> &lt;&lt; s &lt;&lt; <span class="cSpecial">'\n'</span> &lt;&lt; end<span class="Delimiter">();</span>
-    <span class="Identifier">return</span><span class="Delimiter">;</span>
-  <span class="Delimiter">}</span>
-  <span class="Delimiter">{</span>
-    string_tree* value = <span class="Normal">new</span> string_tree<span class="Delimiter">(</span>next_word<span class="Delimiter">(</span>in<span class="Delimiter">));</span>
-    <span class="Comment">// End Parsing Reagent Type Property(value)</span>
-    type = new_type_tree<span class="Delimiter">(</span>value<span class="Delimiter">);</span>
-    <span class="Normal">delete</span> value<span class="Delimiter">;</span>
-  <span class="Delimiter">}</span>
-  <span class="Normal">while</span> <span class="Delimiter">(</span>has_data<span class="Delimiter">(</span>in<span class="Delimiter">))</span> <span class="Delimiter">{</span>
-    string key = slurp_key<span class="Delimiter">(</span>in<span class="Delimiter">);</span>
-    <span class="Normal">if</span> <span class="Delimiter">(</span>key<span class="Delimiter">.</span>empty<span class="Delimiter">())</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>
-    <span class="Normal">if</span> <span class="Delimiter">(</span>key == <span class="Constant">&quot;}&quot;</span><span class="Delimiter">)</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>
-    string_tree* value = <span class="Normal">new</span> string_tree<span class="Delimiter">(</span>next_word<span class="Delimiter">(</span>in<span class="Delimiter">));</span>
-    <span class="Comment">// End Parsing Reagent Property(value)</span>
-    properties<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>pair&lt;string<span class="Delimiter">,</span> string_tree*&gt;<span class="Delimiter">(</span>key<span class="Delimiter">,</span> value<span class="Delimiter">));</span>
-  <span class="Delimiter">}</span>
-  <span class="Identifier">return</span><span class="Delimiter">;</span>
-<span class="Delimiter">}</span>
-
-<span class="Delimiter">:(code)</span>
-string slurp_key<span class="Delimiter">(</span>istream&amp; in<span class="Delimiter">)</span> <span class="Delimiter">{</span>
-  string result = next_word<span class="Delimiter">(</span>in<span class="Delimiter">);</span>
-  <span class="Normal">while</span> <span class="Delimiter">(</span>!result<span class="Delimiter">.</span>empty<span class="Delimiter">()</span> &amp;&amp; *result<span class="Delimiter">.</span>rbegin<span class="Delimiter">()</span> == <span class="Constant">':'</span><span class="Delimiter">)</span>
-    strip_last<span class="Delimiter">(</span>result<span class="Delimiter">);</span>
-  <span class="Normal">while</span> <span class="Delimiter">(</span>isspace<span class="Delimiter">(</span>in<span class="Delimiter">.</span>peek<span class="Delimiter">())</span> || in<span class="Delimiter">.</span>peek<span class="Delimiter">()</span> == <span class="Constant">':'</span><span class="Delimiter">)</span>
-    in<span class="Delimiter">.</span>get<span class="Delimiter">();</span>
-  <span class="Identifier">return</span> result<span class="Delimiter">;</span>
-<span class="Delimiter">}</span>
-</pre>
-</body>
-</html>
-<!-- vim: set foldmethod=manual : -->
author	Kartik K. Agaram <vc@akkartik.com>	2016-05-21 17:44:53 -0700
committer	Kartik K. Agaram <vc@akkartik.com>	2016-05-21 17:44:53 -0700
commit	2f02189ddcdeb7d25b0ca9bd5b955b764d41a1a7 (patch)
tree	7c2e8b6e37ae3201dc01e90bcb390ee60b7f4a77 /html/053dilated_reagent.cc.html
parent	61c025b11ed4ddd002f09f061fd77c75d8b6d0ba (diff)
download	mu-2f02189ddcdeb7d25b0ca9bd5b955b764d41a1a7.tar.gz