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diff --git a/html/016dilated_reagent.cc.html b/html/016dilated_reagent.cc.html new file mode 100644 index 00000000..d7de0ec6 --- /dev/null +++ b/html/016dilated_reagent.cc.html @@ -0,0 +1,171 @@ +<!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 - 016dilated_reagent.cc</title> +<meta name="Generator" content="Vim/7.4"> +<meta name="plugin-version" content="vim7.4_v2"> +<meta name="syntax" content="cpp"> +<meta name="settings" content="use_css,pre_wrap,no_foldcolumn,expand_tabs,prevent_copy="> +<meta name="colorscheme" content="minimal"> +<style type="text/css"> +<!-- +pre { white-space: pre-wrap; font-family: monospace; color: #eeeeee; background-color: #080808; } +body { font-size: 12pt; font-family: monospace; color: #eeeeee; background-color: #080808; } +* { font-size: 12pt; font-size: 1em; } +.Constant { color: #00a0a0; } +.Normal { color: #eeeeee; background-color: #080808; padding-bottom: 1px; } +.traceContains { color: #008000; } +.cSpecial { color: #008000; } +.Comment { color: #9090ff; } +.Delimiter { color: #800080; } +.Special { color: #c00000; } +.Identifier { color: #fcb165; } +.Error { color: #ffffff; background-color: #ff6060; padding-bottom: 1px; } +.PreProc { color: #800080; } +--> +</style> + +<script type='text/javascript'> +<!-- + +--> +</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"> <- </span>copy <span class="Constant">34</span> +] +<span class="traceContains">+parse: product: {1: "number", "foo": "bar"}</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">:(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"> <- </span>copy <span class="Constant">34</span> <span class="Comment"># test comment</span> +] +<span class="traceContains">+parse: product: {1: "number", "foo": "bar"}</span> +$error: <span class="Constant">0</span> + +<span class="Delimiter">:(scenario dilated_reagent_with_comment_immediately_following)</span> +def main [ + <span class="Constant">1</span>:number<span class="Special"> <- </span>copy <span class="Delimiter">{</span><span class="Constant">34</span>: literal<span class="Delimiter">}</span> <span class="Comment"># test comment</span> +] +$error: <span class="Constant">0</span> + +<span class="Comment">//: First augment next_word to group balanced brackets together.</span> + +<span class="Delimiter">:(before "End next_word Special-cases")</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& 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& 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<<span class="Normal">char</span>> open_brackets<span class="Delimiter">;</span> + <span class="Normal">while</span> <span class="Delimiter">(</span>in >> 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 << c<span class="Delimiter">;</span> + <span class="Normal">if</span> <span class="Delimiter">(</span>!<span class="Delimiter">(</span>in >> c<span class="Delimiter">))</span> <span class="Identifier">break</span><span class="Delimiter">;</span> + result << 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 << 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 "Parsing reagent(string s)")</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 >> 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 << <span class="Constant">"invalid reagent '"</span> << s << <span class="Constant">"' without a name</span><span class="cSpecial">\n</span><span class="Constant">"</span> << 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">"}"</span><span class="Delimiter">)</span> <span class="Delimiter">{</span> + raise << <span class="Constant">"invalid empty reagent '"</span> << s << <span class="Constant">"'</span><span class="cSpecial">\n</span><span class="Constant">"</span> << 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">"}"</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<string<span class="Delimiter">,</span> string_tree*><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& 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> && *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 : --> |