3371

author: Kartik K. Agaram <vc@akkartik.com> 2016-09-16 16:04:11 -0700
committer: Kartik K. Agaram <vc@akkartik.com> 2016-09-16 16:04:11 -0700
commit: ced133e40290c30809e6d632cdf1e6f749ea9dd5 (patch)
tree: 8e217620ee5016db6d1be429d2724bd9adfd0881 /html/062convert_ingredients_to_text.cc.html
parent: aa2fd725c0e5129bd4a750261f97ababa8af9a12 (diff)
download: mu-ced133e40290c30809e6d632cdf1e6f749ea9dd5.tar.gz
1 files changed, 210 insertions, 0 deletions
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+<pre id='vimCodeElement'>
+<span class="Comment">//: make some functions more friendly by trying to auto-convert their ingredients to text</span>
+
+<span class="Delimiter">:(scenarios transform)</span>
+<span class="Delimiter">:(scenario rewrite_stashes_to_text)</span>
+def main [
+  local-scope
+  <span class="Normal">n</span>:number<span class="Special"> &lt;- </span>copy <span class="Constant">34</span>
+  stash n
+]
+<span class="traceContains">+transform: {stash_2_0: (&quot;address&quot; &quot;array&quot; &quot;character&quot;)} &lt;- to-text-line {n: &quot;number&quot;}</span>
+<span class="traceContains">+transform: stash {stash_2_0: (&quot;address&quot; &quot;array&quot; &quot;character&quot;)}</span>
+
+<span class="Delimiter">:(scenario rewrite_traces_to_text)</span>
+def main [
+  local-scope
+  <span class="Normal">n</span>:number<span class="Special"> &lt;- </span>copy <span class="Constant">34</span>
+  trace <span class="Constant">2</span><span class="Delimiter">,</span> [app]<span class="Delimiter">,</span> n
+]
+<span class="traceContains">+transform: {trace_2_2: (&quot;address&quot; &quot;array&quot; &quot;character&quot;)} &lt;- to-text-line {n: &quot;number&quot;}</span>
+<span class="traceContains">+transform: trace {2: &quot;literal&quot;}, {&quot;app&quot;: &quot;literal-string&quot;}, {trace_2_2: (&quot;address&quot; &quot;array&quot; &quot;character&quot;)}</span>
+
+<span class="Comment">//: special case: rewrite attempts to stash contents of most arrays to avoid</span>
+<span class="Comment">//: passing addresses around</span>
+
+<span class="Delimiter">:(scenario rewrite_stashes_of_arrays)</span>
+def main [
+  local-scope
+  <span class="Normal">n</span>:address:array:number<span class="Special"> &lt;- </span><span class="Normal">new</span> number:type<span class="Delimiter">,</span> <span class="Constant">3</span>
+  stash *n
+]
+<span class="traceContains">+transform: {stash_2_0: (&quot;address&quot; &quot;array&quot; &quot;character&quot;)} &lt;- array-to-text-line {n: (&quot;address&quot; &quot;array&quot; &quot;number&quot;)}</span>
+<span class="traceContains">+transform: stash {stash_2_0: (&quot;address&quot; &quot;array&quot; &quot;character&quot;)}</span>
+
+<span class="Delimiter">:(scenario ignore_stashes_of_static_arrays)</span>
+def main [
+  local-scope
+  <span class="Normal">n</span>:array:number:<span class="Constant">3</span><span class="Special"> &lt;- </span>create-array
+  stash n
+]
+<span class="traceContains">+transform: stash {n: (&quot;array&quot; &quot;number&quot; &quot;3&quot;)}</span>
+
+<span class="Delimiter">:(scenario rewrite_stashes_of_recipe_header_products)</span>
+container foo [
+  <span class="Normal">x</span>:number
+]
+def bar <span class="Delimiter">-&gt;</span> x:foo [
+  local-scope
+  load-ingredients
+  x<span class="Special"> &lt;- </span>merge <span class="Constant">34</span>
+  stash x
+]
+<span class="traceContains">+transform: stash {stash_2_0: (&quot;address&quot; &quot;array&quot; &quot;character&quot;)}</span>
+
+<span class="Comment">//: misplaced; should be in instruction inserting/deleting transforms, but has</span>
+<span class="Comment">//: prerequisites: deduce_types_from_header and check_or_set_types_by_name</span>
+<span class="Delimiter">:(after &quot;Transform.push_back(deduce_types_from_header)&quot;)</span>
+Transform<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>convert_ingredients_to_text<span class="Delimiter">);</span>
+
+<span class="Delimiter">:(code)</span>
+<span class="Normal">void</span> convert_ingredients_to_text<span class="Delimiter">(</span>recipe_ordinal r<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+  recipe&amp; caller = get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">);</span>
+  trace<span class="Delimiter">(</span><span class="Constant">9991</span><span class="Delimiter">,</span> <span class="Constant">&quot;transform&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;--- convert some ingredients to text in recipe &quot;</span> &lt;&lt; caller<span class="Delimiter">.</span>name &lt;&lt; end<span class="Delimiter">();</span>
+<span class="CommentedCode">//?   cerr &lt;&lt; &quot;--- convert some ingredients to text in recipe &quot; &lt;&lt; caller.name &lt;&lt; '\n';</span>
+  <span class="Comment">// in recipes without named locations, 'stash' is still not extensible</span>
+  <span class="Normal">if</span> <span class="Delimiter">(</span>contains_numeric_locations<span class="Delimiter">(</span>caller<span class="Delimiter">))</span> <span class="Identifier">return</span><span class="Delimiter">;</span>
+  convert_ingredients_to_text<span class="Delimiter">(</span>caller<span class="Delimiter">);</span>
+<span class="Delimiter">}</span>
+
+<span class="Normal">void</span> convert_ingredients_to_text<span class="Delimiter">(</span>recipe&amp; caller<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+  vector&lt;instruction&gt; new_instructions<span class="Delimiter">;</span>
+  <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i &lt; SIZE<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>steps<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+    instruction&amp; inst = caller<span class="Delimiter">.</span>steps<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">);</span>
+    <span class="Comment">// all these cases are getting hairy. how can we make this extensible?</span>
+    <span class="Normal">if</span> <span class="Delimiter">(</span>inst<span class="Delimiter">.</span>name == <span class="Constant">&quot;stash&quot;</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
+      <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> j = <span class="Constant">0</span><span class="Delimiter">;</span> j &lt; SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">);</span> ++j<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+        <span class="Normal">if</span> <span class="Delimiter">(</span>is_literal_string<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>j<span class="Delimiter">)))</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>
+        ostringstream ingredient_name<span class="Delimiter">;</span>
+        ingredient_name &lt;&lt; <span class="Constant">&quot;stash_&quot;</span> &lt;&lt; i &lt;&lt; <span class="Constant">'_'</span> &lt;&lt; j &lt;&lt; <span class="Constant">&quot;:address:array:character&quot;</span><span class="Delimiter">;</span>
+        convert_ingredient_to_text<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>j<span class="Delimiter">),</span> new_instructions<span class="Delimiter">,</span> ingredient_name<span class="Delimiter">.</span>str<span class="Delimiter">());</span>
+      <span class="Delimiter">}</span>
+    <span class="Delimiter">}</span>
+    <span class="Normal">else</span> <span class="Normal">if</span> <span class="Delimiter">(</span>inst<span class="Delimiter">.</span>name == <span class="Constant">&quot;trace&quot;</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
+      <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> j = <span class="Comment">/*</span><span class="Comment">skip</span><span class="Comment">*/</span><span class="Constant">2</span><span class="Delimiter">;</span> j &lt; SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">);</span> ++j<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+        <span class="Normal">if</span> <span class="Delimiter">(</span>is_literal_string<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>j<span class="Delimiter">)))</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>
+        ostringstream ingredient_name<span class="Delimiter">;</span>
+        ingredient_name &lt;&lt; <span class="Constant">&quot;trace_&quot;</span> &lt;&lt; i &lt;&lt; <span class="Constant">'_'</span> &lt;&lt; j &lt;&lt; <span class="Constant">&quot;:address:array:character&quot;</span><span class="Delimiter">;</span>
+        convert_ingredient_to_text<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>j<span class="Delimiter">),</span> new_instructions<span class="Delimiter">,</span> ingredient_name<span class="Delimiter">.</span>str<span class="Delimiter">());</span>
+      <span class="Delimiter">}</span>
+    <span class="Delimiter">}</span>
+    <span class="Normal">else</span> <span class="Normal">if</span> <span class="Delimiter">(</span>inst<span class="Delimiter">.</span>old_name == <span class="Constant">&quot;append&quot;</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
+      <span class="Comment">// override only variants that try to append to a string</span>
+      <span class="Comment">// Beware: this hack restricts how much 'append' can be overridden. Any</span>
+      <span class="Comment">// new variants that match:</span>
+      <span class="Comment">//   append _:text, ___</span>
+      <span class="Comment">// will never ever get used.</span>
+      <span class="Normal">if</span> <span class="Delimiter">(</span>is_literal_string<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">))</span> || is_mu_string<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span>
+        <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> j = <span class="Constant">0</span><span class="Delimiter">;</span> j &lt; SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">);</span> ++j<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+          ostringstream ingredient_name<span class="Delimiter">;</span>
+          ingredient_name &lt;&lt; <span class="Constant">&quot;append_&quot;</span> &lt;&lt; i &lt;&lt; <span class="Constant">'_'</span> &lt;&lt; j &lt;&lt; <span class="Constant">&quot;:address:array:character&quot;</span><span class="Delimiter">;</span>
+          convert_ingredient_to_text<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>j<span class="Delimiter">),</span> new_instructions<span class="Delimiter">,</span> ingredient_name<span class="Delimiter">.</span>str<span class="Delimiter">());</span>
+        <span class="Delimiter">}</span>
+      <span class="Delimiter">}</span>
+    <span class="Delimiter">}</span>
+    trace<span class="Delimiter">(</span><span class="Constant">9993</span><span class="Delimiter">,</span> <span class="Constant">&quot;transform&quot;</span><span class="Delimiter">)</span> &lt;&lt; to_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; end<span class="Delimiter">();</span>
+    new_instructions<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>inst<span class="Delimiter">);</span>
+  <span class="Delimiter">}</span>
+  caller<span class="Delimiter">.</span>steps<span class="Delimiter">.</span>swap<span class="Delimiter">(</span>new_instructions<span class="Delimiter">);</span>
+<span class="Delimiter">}</span>
+
+<span class="Comment">// add an instruction to convert reagent 'r' to text in list 'out', then</span>
+<span class="Comment">// replace r with converted text</span>
+<span class="Normal">void</span> convert_ingredient_to_text<span class="Delimiter">(</span>reagent&amp; r<span class="Delimiter">,</span> vector&lt;instruction&gt;&amp; out<span class="Delimiter">,</span> <span class="Normal">const</span> string&amp; tmp_var<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+  <span class="Normal">if</span> <span class="Delimiter">(</span>!r<span class="Delimiter">.</span>type<span class="Delimiter">)</span> <span class="Identifier">return</span><span class="Delimiter">;</span>  <span class="Comment">// error; will be handled elsewhere</span>
+  <span class="Normal">if</span> <span class="Delimiter">(</span>is_mu_string<span class="Delimiter">(</span>r<span class="Delimiter">))</span> <span class="Identifier">return</span><span class="Delimiter">;</span>
+  <span class="Comment">// don't try to extend static arrays</span>
+  <span class="Normal">if</span> <span class="Delimiter">(</span>is_static_array<span class="Delimiter">(</span>r<span class="Delimiter">))</span> <span class="Identifier">return</span><span class="Delimiter">;</span>
+  instruction def<span class="Delimiter">;</span>
+  <span class="Normal">if</span> <span class="Delimiter">(</span>is_lookup_of_address_of_array<span class="Delimiter">(</span>r<span class="Delimiter">))</span> <span class="Delimiter">{</span>
+    def<span class="Delimiter">.</span>name = <span class="Constant">&quot;array-to-text-line&quot;</span><span class="Delimiter">;</span>
+    reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> tmp = r<span class="Delimiter">;</span>
+    drop_one_lookup<span class="Delimiter">(</span>tmp<span class="Delimiter">);</span>
+    def<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>tmp<span class="Delimiter">);</span>
+  <span class="Delimiter">}</span>
+  <span class="Normal">else</span> <span class="Delimiter">{</span>
+    def<span class="Delimiter">.</span>name = <span class="Constant">&quot;to-text-line&quot;</span><span class="Delimiter">;</span>
+    def<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>r<span class="Delimiter">);</span>
+  <span class="Delimiter">}</span>
+  def<span class="Delimiter">.</span>products<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>reagent<span class="Delimiter">(</span>tmp_var<span class="Delimiter">));</span>
+  trace<span class="Delimiter">(</span><span class="Constant">9993</span><span class="Delimiter">,</span> <span class="Constant">&quot;transform&quot;</span><span class="Delimiter">)</span> &lt;&lt; to_string<span class="Delimiter">(</span>def<span class="Delimiter">)</span> &lt;&lt; end<span class="Delimiter">();</span>
+  out<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>def<span class="Delimiter">);</span>
+  r<span class="Delimiter">.</span>clear<span class="Delimiter">();</span>  <span class="Comment">// reclaim old memory</span>
+  r = reagent<span class="Delimiter">(</span>tmp_var<span class="Delimiter">);</span>
+<span class="Delimiter">}</span>
+
+<span class="Normal">bool</span> is_lookup_of_address_of_array<span class="Delimiter">(</span>reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> x<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+  <span class="Normal">if</span> <span class="Delimiter">(</span>x<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>atom<span class="Delimiter">)</span> <span class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span>
+  <span class="Normal">if</span> <span class="Delimiter">(</span>x<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>left<span class="Delimiter">-&gt;</span>name != <span class="Constant">&quot;address&quot;</span><span class="Delimiter">)</span> <span class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span>
+  <span class="Normal">if</span> <span class="Delimiter">(</span>!canonize_type<span class="Delimiter">(</span>x<span class="Delimiter">))</span> <span class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span>
+  <span class="Identifier">return</span> is_mu_array<span class="Delimiter">(</span>x<span class="Delimiter">);</span>
+<span class="Delimiter">}</span>
+
+<span class="Normal">bool</span> is_static_array<span class="Delimiter">(</span><span class="Normal">const</span> reagent&amp; x<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+  <span class="Comment">// no canonize_type()</span>
+  <span class="Identifier">return</span> !x<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>atom &amp;&amp; x<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>left<span class="Delimiter">-&gt;</span>atom &amp;&amp; x<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>left<span class="Delimiter">-&gt;</span>name == <span class="Constant">&quot;array&quot;</span><span class="Delimiter">;</span>
+<span class="Delimiter">}</span>
+
+<span class="Delimiter">:(scenarios run)</span>
+<span class="Delimiter">:(scenario append_other_types_to_text)</span>
+def main [
+  local-scope
+  <span class="Normal">n</span>:number<span class="Special"> &lt;- </span>copy <span class="Constant">11</span>
+  <span class="Normal">c</span>:character<span class="Special"> &lt;- </span>copy <span class="Constant">111</span>/o
+  <span class="Normal">a</span>:text<span class="Special"> &lt;- </span>append [abc]<span class="Delimiter">,</span> <span class="Constant">10</span><span class="Delimiter">,</span> n<span class="Delimiter">,</span> c
+  <span class="Normal">expected</span>:text<span class="Special"> &lt;- </span><span class="Normal">new</span> [abc1011o]
+  <span class="Constant">10</span>:boolean/<span class="Special">raw &lt;- </span>equal a<span class="Delimiter">,</span> expected
+]
+
+<span class="Comment">//: Make sure that the new system is strictly better than just the 'stash'</span>
+<span class="Comment">//: primitive by itself.</span>
+
+<span class="Delimiter">:(scenario rewrite_stash_continues_to_fall_back_to_default_implementation)</span>
+<span class="Comment"># type without a to-text implementation</span>
+container foo [
+  <span class="Normal">x</span>:number
+  <span class="Normal">y</span>:number
+]
+def main [
+  local-scope
+  <span class="Normal">x</span>:foo<span class="Special"> &lt;- </span>merge <span class="Constant">34</span><span class="Delimiter">,</span> <span class="Constant">35</span>
+  stash x
+]
+<span class="traceContains">+app: 34 35</span>
+</pre>
+</body>
+</html>
+<!-- vim: set foldmethod=manual : -->
author	Kartik K. Agaram <vc@akkartik.com>	2016-09-16 16:04:11 -0700
committer	Kartik K. Agaram <vc@akkartik.com>	2016-09-16 16:04:11 -0700
commit	ced133e40290c30809e6d632cdf1e6f749ea9dd5 (patch)
tree	8e217620ee5016db6d1be429d2724bd9adfd0881 /html/062convert_ingredients_to_text.cc.html
parent	aa2fd725c0e5129bd4a750261f97ababa8af9a12 (diff)
download	mu-ced133e40290c30809e6d632cdf1e6f749ea9dd5.tar.gz