html/060rewrite_literal_string.cc.html


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<span class="Comment">//: allow using literal strings anywhere that will accept immutable strings</span>

<span class="Delimiter">:(scenario passing_literals_to_recipes)</span>
<span class="muRecipe">def</span> main [
  <span class="Constant">1</span>:num/<span class="Special">raw &lt;- </span>foo [abc]
]
<span class="muRecipe">def</span> foo x:text<span class="muRecipe"> -&gt; </span>n:num [
  local-scope
  load-ingredients
  n<span class="Special"> &lt;- </span>length *x
]
<span class="traceContains">+mem: storing 3 in location 1</span>

<span class="Delimiter">:(before &quot;End Instruction Inserting/Deleting Transforms&quot;)</span>
initialize_transform_rewrite_literal_string_to_text<span class="Delimiter">();</span>
Transform<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>rewrite_literal_string_to_text<span class="Delimiter">);</span>  <span class="Comment">// idempotent</span>

<span class="Delimiter">:(before &quot;End Globals&quot;)</span>
set&lt;string&gt; recipes_taking_literal_strings<span class="Delimiter">;</span>
<span class="Delimiter">:(code)</span>
<span class="Normal">void</span> initialize_transform_rewrite_literal_string_to_text<span class="Delimiter">()</span> <span class="Delimiter">{</span>
  recipes_taking_literal_strings<span class="Delimiter">.</span>insert<span class="Delimiter">(</span><span class="Constant">&quot;$print&quot;</span><span class="Delimiter">);</span>
  recipes_taking_literal_strings<span class="Delimiter">.</span>insert<span class="Delimiter">(</span><span class="Constant">&quot;$dump-trace&quot;</span><span class="Delimiter">);</span>
  recipes_taking_literal_strings<span class="Delimiter">.</span>insert<span class="Delimiter">(</span><span class="Constant">&quot;$system&quot;</span><span class="Delimiter">);</span>
  recipes_taking_literal_strings<span class="Delimiter">.</span>insert<span class="Delimiter">(</span><span class="Constant">&quot;trace&quot;</span><span class="Delimiter">);</span>
  recipes_taking_literal_strings<span class="Delimiter">.</span>insert<span class="Delimiter">(</span><span class="Constant">&quot;stash&quot;</span><span class="Delimiter">);</span>
  recipes_taking_literal_strings<span class="Delimiter">.</span>insert<span class="Delimiter">(</span><span class="Constant">&quot;assert&quot;</span><span class="Delimiter">);</span>
  recipes_taking_literal_strings<span class="Delimiter">.</span>insert<span class="Delimiter">(</span><span class="Constant">&quot;new&quot;</span><span class="Delimiter">);</span>
  recipes_taking_literal_strings<span class="Delimiter">.</span>insert<span class="Delimiter">(</span><span class="Constant">&quot;run&quot;</span><span class="Delimiter">);</span>
  recipes_taking_literal_strings<span class="Delimiter">.</span>insert<span class="Delimiter">(</span><span class="Constant">&quot;memory-should-contain&quot;</span><span class="Delimiter">);</span>
  recipes_taking_literal_strings<span class="Delimiter">.</span>insert<span class="Delimiter">(</span><span class="Constant">&quot;trace-should-contain&quot;</span><span class="Delimiter">);</span>
  recipes_taking_literal_strings<span class="Delimiter">.</span>insert<span class="Delimiter">(</span><span class="Constant">&quot;trace-should-not-contain&quot;</span><span class="Delimiter">);</span>
  recipes_taking_literal_strings<span class="Delimiter">.</span>insert<span class="Delimiter">(</span><span class="Constant">&quot;check-trace-count-for-label&quot;</span><span class="Delimiter">);</span>
  <span class="Comment">// End initialize_transform_rewrite_literal_string_to_text()</span>
<span class="Delimiter">}</span>

<span class="Normal">void</span> rewrite_literal_string_to_text<span class="Delimiter">(</span><span class="Normal">const</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;--- rewrite literal strings in recipe &quot;</span> &lt;&lt; caller<span class="Delimiter">.</span>name &lt;&lt; end<span class="Delimiter">();</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>
  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="Normal">if</span> <span class="Delimiter">(</span>recipes_taking_literal_strings<span class="Delimiter">.</span>find<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>name<span class="Delimiter">)</span> == recipes_taking_literal_strings<span class="Delimiter">.</span>end<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_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> <span class="Identifier">continue</span><span class="Delimiter">;</span>
        instruction def<span class="Delimiter">;</span>
        ostringstream ingredient_name<span class="Delimiter">;</span>
        ingredient_name &lt;&lt; inst<span class="Delimiter">.</span>name &lt;&lt; <span class="Constant">'_'</span> &lt;&lt; i &lt;&lt; <span class="Constant">'_'</span> &lt;&lt; j &lt;&lt; <span class="Constant">&quot;:text&quot;</span><span class="Delimiter">;</span>
        def<span class="Delimiter">.</span>name = <span class="Constant">&quot;new&quot;</span><span class="Delimiter">;</span>
        def<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>j<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>ingredient_name<span class="Delimiter">.</span>str<span class="Delimiter">()));</span>
        new_instructions<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>def<span class="Delimiter">);</span>
        inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>j<span class="Delimiter">).</span>clear<span class="Delimiter">();</span>  <span class="Comment">// reclaim old memory</span>
        inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>j<span class="Delimiter">)</span> = reagent<span class="Delimiter">(</span>ingredient_name<span class="Delimiter">.</span>str<span class="Delimiter">());</span>
      <span class="Delimiter">}</span>
    <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="Normal">bool</span> contains_numeric_locations<span class="Delimiter">(</span><span class="Normal">const</span> recipe&amp; caller<span class="Delimiter">)</span> <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>
    <span class="Normal">const</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="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> in = <span class="Constant">0</span><span class="Delimiter">;</span>  in &lt; SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">);</span>  ++in<span class="Delimiter">)</span>
      <span class="Normal">if</span> <span class="Delimiter">(</span>is_numeric_location<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>in<span class="Delimiter">)))</span>
        <span class="Identifier">return</span> <span class="Constant">true</span><span class="Delimiter">;</span>
    <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> out = <span class="Constant">0</span><span class="Delimiter">;</span>  out &lt; SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">);</span>  ++out<span class="Delimiter">)</span>
      <span class="Normal">if</span> <span class="Delimiter">(</span>is_numeric_location<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>out<span class="Delimiter">)))</span>
        <span class="Identifier">return</span> <span class="Constant">true</span><span class="Delimiter">;</span>
  <span class="Delimiter">}</span>
  <span class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
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