1720 - start adding repl support - mu - Soul of a tiny new machine. More thorough tests → More comprehensible and rewrite-friendly software → More resilient society.

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author	Kartik K. Agaram <vc@akkartik.com>	2015-07-07 15:55:57 -0700
committer	Kartik K. Agaram <vc@akkartik.com>	2015-07-07 16:03:43 -0700
commit	a2372bee56a110e7dfd83c3b52f430c75b2cf0e7 (patch)
tree	a64143f428b39402f7dfb796ddaa292904d220d7 /arc/.traces/dispatch-multiple-calls
parent	25a033d8cf9c9c388e5b2b42468a72e2295544ed (diff)
download	mu-a2372bee56a110e7dfd83c3b52f430c75b2cf0e7.tar.gz

1720 - start adding repl support

Diffstat (limited to 'arc/.traces/dispatch-multiple-calls')

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<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>:num<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>:num<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>:&amp;:@:num<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>:@:num:<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>:num
]
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_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>
        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_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>
        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_text<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_text<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_text<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>:num<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>:<span class="Normal">bool</span>/<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>:num
  <span class="Normal">y</span>:num
]
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>
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