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<title>Mu - 059shape_shifting_recipe.cc</title>
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<span class="SalientComment">//:: Like container definitions, recipes too can contain type parameters.</span>
<span class="Delimiter">:(scenario shape_shifting_recipe)</span>
def main [
<span class="Constant">10</span>:point<span class="Special"> <- </span>merge <span class="Constant">14</span><span class="Delimiter">,</span> <span class="Constant">15</span>
<span class="Constant">11</span>:point<span class="Special"> <- </span>foo <span class="Constant">10</span>:point
]
<span class="Comment"># non-matching variant</span>
def foo a:number <span class="Delimiter">-></span> result:number [
local-scope
load-ingredients
result<span class="Special"> <- </span>copy <span class="Constant">34</span>
]
<span class="Comment"># matching shape-shifting variant</span>
def foo a:_t <span class="Delimiter">-></span> result:_t [
local-scope
load-ingredients
result<span class="Special"> <- </span>copy a
]
<span class="traceContains">+mem: storing 14 in location 11</span>
<span class="traceContains">+mem: storing 15 in location 12</span>
<span class="Comment">//: Before anything else, disable transforms for shape-shifting recipes and</span>
<span class="Comment">//: make sure we never try to actually run a shape-shifting recipe. We should</span>
<span class="Comment">//: be rewriting such instructions to *specializations* with the type</span>
<span class="Comment">//: ingredients filled in.</span>
<span class="Delimiter">:(before "End Transform Checks")</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>any_type_ingredient_in_header<span class="Delimiter">(</span><span class="Comment">/*</span><span class="Comment">recipe_ordinal</span><span class="Comment">*/</span>p<span class="Delimiter">-></span>first<span class="Delimiter">))</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>
<span class="Delimiter">:(after "Running One Instruction")</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>Current_routine<span class="Delimiter">-></span>calls<span class="Delimiter">.</span>front<span class="Delimiter">().</span>running_step_index == <span class="Constant">0</span>
&& any_type_ingredient_in_header<span class="Delimiter">(</span>Current_routine<span class="Delimiter">-></span>calls<span class="Delimiter">.</span>front<span class="Delimiter">().</span>running_recipe<span class="Delimiter">))</span> <span class="Delimiter">{</span>
<span class="CommentedCode">//? DUMP("");</span>
raise << <span class="Constant">"ran into unspecialized shape-shifting recipe "</span> << current_recipe_name<span class="Delimiter">()</span> << <span class="cSpecial">'\n'</span> << end<span class="Delimiter">();</span>
<span class="CommentedCode">//? exit(0);</span>
<span class="Delimiter">}</span>
<span class="Comment">//: Make sure we don't match up literals with type ingredients without</span>
<span class="Comment">//: specialization.</span>
<span class="Delimiter">:(before "End Matching Types For Literal(to)")</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>contains_type_ingredient_name<span class="Delimiter">(</span>to<span class="Delimiter">))</span> <span class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span>
<span class="Comment">//: We'll be creating recipes without loading them from anywhere by</span>
<span class="Comment">//: *specializing* existing recipes.</span>
<span class="Comment">//:</span>
<span class="Comment">//: Keep track of these new recipes in a separate variable in addition to</span>
<span class="Comment">//: Recently_added_recipes, so that edit/ can clear them before reloading to</span>
<span class="Comment">//: regenerate errors.</span>
<span class="Delimiter">:(before "End Globals")</span>
vector<recipe_ordinal> Recently_added_shape_shifting_recipes<span class="Delimiter">;</span>
<span class="Delimiter">:(before "End Setup")</span>
Recently_added_shape_shifting_recipes<span class="Delimiter">.</span>clear<span class="Delimiter">();</span>
<span class="Comment">//: make sure we don't clear any of these recipes when we start running tests</span>
<span class="Delimiter">:(before "End Loading .mu Files")</span>
Recently_added_recipes<span class="Delimiter">.</span>clear<span class="Delimiter">();</span>
Recently_added_types<span class="Delimiter">.</span>clear<span class="Delimiter">();</span>
Recently_added_shape_shifting_recipes<span class="Delimiter">.</span>clear<span class="Delimiter">();</span>
<span class="Comment">//: save original name of specialized recipes</span>
<span class="Delimiter">:(before "End recipe Fields")</span>
string original_name<span class="Delimiter">;</span>
<span class="Comment">//: original name is only set during load</span>
<span class="Delimiter">:(before "End Load Recipe Name")</span>
result<span class="Delimiter">.</span>original_name = result<span class="Delimiter">.</span>name<span class="Delimiter">;</span>
<span class="Delimiter">:(after "Static Dispatch Phase 2")</span>
candidates = strictly_matching_shape_shifting_variants<span class="Delimiter">(</span>inst<span class="Delimiter">,</span> variants<span class="Delimiter">);</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!candidates<span class="Delimiter">.</span>empty<span class="Delimiter">())</span> <span class="Delimiter">{</span>
recipe_ordinal exemplar = best_shape_shifting_variant<span class="Delimiter">(</span>inst<span class="Delimiter">,</span> candidates<span class="Delimiter">);</span>
trace<span class="Delimiter">(</span><span class="Constant">9992</span><span class="Delimiter">,</span> <span class="Constant">"transform"</span><span class="Delimiter">)</span> << <span class="Constant">"found variant to specialize: "</span> << exemplar << <span class="Constant">' '</span> << get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> exemplar<span class="Delimiter">).</span>name << end<span class="Delimiter">();</span>
recipe_ordinal new_recipe_ordinal = new_variant<span class="Delimiter">(</span>exemplar<span class="Delimiter">,</span> inst<span class="Delimiter">,</span> caller_recipe<span class="Delimiter">);</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>new_recipe_ordinal == <span class="Constant">0</span><span class="Delimiter">)</span> <span class="Identifier">goto</span> skip_shape_shifting_variants<span class="Delimiter">;</span>
variants<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>new_recipe_ordinal<span class="Delimiter">);</span> <span class="Comment">// side-effect</span>
recipe& variant = get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> new_recipe_ordinal<span class="Delimiter">);</span>
<span class="Comment">// perform all transforms on the new specialization</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!variant<span class="Delimiter">.</span>steps<span class="Delimiter">.</span>empty<span class="Delimiter">())</span> <span class="Delimiter">{</span>
trace<span class="Delimiter">(</span><span class="Constant">9992</span><span class="Delimiter">,</span> <span class="Constant">"transform"</span><span class="Delimiter">)</span> << <span class="Constant">"transforming new specialization: "</span> << variant<span class="Delimiter">.</span>name << end<span class="Delimiter">();</span>
<span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">long</span> <span class="Normal">long</span> <span class="Normal">int</span> t = <span class="Constant">0</span><span class="Delimiter">;</span> t < SIZE<span class="Delimiter">(</span>Transform<span class="Delimiter">);</span> ++t<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Delimiter">(</span>*Transform<span class="Delimiter">.</span>at<span class="Delimiter">(</span>t<span class="Delimiter">))(</span>new_recipe_ordinal<span class="Delimiter">);</span>
<span class="Delimiter">}</span>
<span class="Delimiter">}</span>
variant<span class="Delimiter">.</span>transformed_until = SIZE<span class="Delimiter">(</span>Transform<span class="Delimiter">)</span>-<span class="Constant">1</span><span class="Delimiter">;</span>
trace<span class="Delimiter">(</span><span class="Constant">9992</span><span class="Delimiter">,</span> <span class="Constant">"transform"</span><span class="Delimiter">)</span> << <span class="Constant">"new specialization: "</span> << variant<span class="Delimiter">.</span>name << end<span class="Delimiter">();</span>
<span class="Identifier">return</span> variant<span class="Delimiter">.</span>name<span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Normal">skip_shape_shifting_variants</span>:<span class="Delimiter">;</span>
<span class="Comment">//: make sure we have no unspecialized shape-shifting recipes being called</span>
<span class="Comment">//: before running mu programs</span>
<span class="Delimiter">:(before "End Instruction Operation Checks")</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>contains_key<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> inst<span class="Delimiter">.</span>operation<span class="Delimiter">)</span> && inst<span class="Delimiter">.</span>operation >= MAX_PRIMITIVE_RECIPES
&& any_type_ingredient_in_header<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>operation<span class="Delimiter">))</span> <span class="Delimiter">{</span>
raise << maybe<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>name<span class="Delimiter">)</span> << <span class="Constant">"instruction "</span> << inst<span class="Delimiter">.</span>name << <span class="Constant">" has no valid specialization</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">:(code)</span>
<span class="Comment">// phase 2 of static dispatch</span>
vector<recipe_ordinal> strictly_matching_shape_shifting_variants<span class="Delimiter">(</span><span class="Normal">const</span> instruction& inst<span class="Delimiter">,</span> vector<recipe_ordinal>& variants<span class="Delimiter">)</span> <span class="Delimiter">{</span>
vector<recipe_ordinal> result<span class="Delimiter">;</span>
<span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">long</span> <span class="Normal">long</span> <span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < SIZE<span class="Delimiter">(</span>variants<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>variants<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">)</span> == -<span class="Constant">1</span><span class="Delimiter">)</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!any_type_ingredient_in_header<span class="Delimiter">(</span>variants<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">)))</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>all_concrete_header_reagents_strictly_match<span class="Delimiter">(</span>inst<span class="Delimiter">,</span> get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> variants<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">))))</span>
result<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>variants<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">));</span>
<span class="Delimiter">}</span>
<span class="Identifier">return</span> result<span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Normal">bool</span> all_concrete_header_reagents_strictly_match<span class="Delimiter">(</span><span class="Normal">const</span> instruction& inst<span class="Delimiter">,</span> <span class="Normal">const</span> recipe& variant<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span> < SIZE<span class="Delimiter">(</span>variant<span class="Delimiter">.</span>ingredients<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">"transform"</span><span class="Delimiter">)</span> << <span class="Constant">"too few ingredients"</span> << end<span class="Delimiter">();</span>
<span class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>variant<span class="Delimiter">.</span>products<span class="Delimiter">)</span> < SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<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">"transform"</span><span class="Delimiter">)</span> << <span class="Constant">"too few products"</span> << end<span class="Delimiter">();</span>
<span class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">long</span> <span class="Normal">long</span> <span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < SIZE<span class="Delimiter">(</span>variant<span class="Delimiter">.</span>ingredients<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!concrete_type_names_strictly_match<span class="Delimiter">(</span>variant<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">),</span> inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<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">"transform"</span><span class="Delimiter">)</span> << <span class="Constant">"concrete-type match failed: ingredient "</span> << i << end<span class="Delimiter">();</span>
<span class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Delimiter">}</span>
<span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">long</span> <span class="Normal">long</span> <span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>is_dummy<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">)))</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!concrete_type_names_strictly_match<span class="Delimiter">(</span>variant<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">),</span> inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<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">"transform"</span><span class="Delimiter">)</span> << <span class="Constant">"strict match failed: product "</span> << i << end<span class="Delimiter">();</span>
<span class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Delimiter">}</span>
<span class="Identifier">return</span> <span class="Constant">true</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Comment">// tie-breaker for phase 2</span>
recipe_ordinal best_shape_shifting_variant<span class="Delimiter">(</span><span class="Normal">const</span> instruction& inst<span class="Delimiter">,</span> vector<recipe_ordinal>& candidates<span class="Delimiter">)</span> <span class="Delimiter">{</span>
assert<span class="Delimiter">(</span>!candidates<span class="Delimiter">.</span>empty<span class="Delimiter">());</span>
<span class="Comment">// primary score</span>
<span class="Normal">long</span> <span class="Normal">long</span> <span class="Normal">int</span> max_score = -<span class="Constant">1</span><span class="Delimiter">;</span>
<span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">long</span> <span class="Normal">long</span> <span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < SIZE<span class="Delimiter">(</span>candidates<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Normal">long</span> <span class="Normal">long</span> <span class="Normal">int</span> score = number_of_concrete_type_names<span class="Delimiter">(</span>candidates<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">));</span>
assert<span class="Delimiter">(</span>score > -<span class="Constant">1</span><span class="Delimiter">);</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>score > max_score<span class="Delimiter">)</span> max_score = score<span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Comment">// break any ties at max_score by a secondary score</span>
<span class="Normal">long</span> <span class="Normal">long</span> <span class="Normal">int</span> min_score2 = <span class="Constant">999</span><span class="Delimiter">;</span>
<span class="Normal">long</span> <span class="Normal">long</span> <span class="Normal">int</span> best_index = <span class="Constant">0</span><span class="Delimiter">;</span>
<span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">long</span> <span class="Normal">long</span> <span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < SIZE<span class="Delimiter">(</span>candidates<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Normal">long</span> <span class="Normal">long</span> <span class="Normal">int</span> score1 = number_of_concrete_type_names<span class="Delimiter">(</span>candidates<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">));</span>
assert<span class="Delimiter">(</span>score1 <= max_score<span class="Delimiter">);</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>score1 != max_score<span class="Delimiter">)</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>
<span class="Normal">const</span> recipe& candidate = get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> candidates<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">));</span>
<span class="Normal">long</span> <span class="Normal">long</span> <span class="Normal">int</span> score2 = <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>candidate<span class="Delimiter">.</span>products<span class="Delimiter">)</span>-SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">))</span>
+ <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span>-SIZE<span class="Delimiter">(</span>candidate<span class="Delimiter">.</span>ingredients<span class="Delimiter">));</span>
assert<span class="Delimiter">(</span>score2 < <span class="Constant">999</span><span class="Delimiter">);</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>score2 < min_score2<span class="Delimiter">)</span> <span class="Delimiter">{</span>
min_score2 = score2<span class="Delimiter">;</span>
best_index = i<span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Delimiter">}</span>
<span class="Identifier">return</span> candidates<span class="Delimiter">.</span>at<span class="Delimiter">(</span>best_index<span class="Delimiter">);</span>
<span class="Delimiter">}</span>
<span class="Normal">bool</span> any_type_ingredient_in_header<span class="Delimiter">(</span>recipe_ordinal variant<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Normal">const</span> recipe& caller = get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> variant<span class="Delimiter">);</span>
<span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">long</span> <span class="Normal">long</span> <span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < SIZE<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>ingredients<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>contains_type_ingredient_name<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">)))</span>
<span class="Identifier">return</span> <span class="Constant">true</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">long</span> <span class="Normal">long</span> <span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < SIZE<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>products<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>contains_type_ingredient_name<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<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>
<span class="Normal">bool</span> concrete_type_names_strictly_match<span class="Delimiter">(</span>reagent to<span class="Delimiter">,</span> reagent from<span class="Delimiter">)</span> <span class="Delimiter">{</span>
canonize_type<span class="Delimiter">(</span>to<span class="Delimiter">);</span>
canonize_type<span class="Delimiter">(</span>from<span class="Delimiter">);</span>
<span class="Identifier">return</span> concrete_type_names_strictly_match<span class="Delimiter">(</span>to<span class="Delimiter">.</span>type<span class="Delimiter">,</span> from<span class="Delimiter">.</span>type<span class="Delimiter">,</span> from<span class="Delimiter">);</span>
<span class="Delimiter">}</span>
<span class="Normal">long</span> <span class="Normal">long</span> <span class="Normal">int</span> number_of_concrete_type_names<span class="Delimiter">(</span>recipe_ordinal r<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Normal">const</span> recipe& caller = get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">);</span>
<span class="Normal">long</span> <span class="Normal">long</span> <span class="Normal">int</span> result = <span class="Constant">0</span><span class="Delimiter">;</span>
<span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">long</span> <span class="Normal">long</span> <span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < SIZE<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>ingredients<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span>
result += number_of_concrete_type_names<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>ingredients<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">long</span> <span class="Normal">long</span> <span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < SIZE<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>products<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span>
result += number_of_concrete_type_names<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">));</span>
<span class="Identifier">return</span> result<span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Normal">long</span> <span class="Normal">long</span> <span class="Normal">int</span> number_of_concrete_type_names<span class="Delimiter">(</span><span class="Normal">const</span> reagent& r<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Identifier">return</span> number_of_concrete_type_names<span class="Delimiter">(</span>r<span class="Delimiter">.</span>type<span class="Delimiter">);</span>
<span class="Delimiter">}</span>
<span class="Normal">long</span> <span class="Normal">long</span> <span class="Normal">int</span> number_of_concrete_type_names<span class="Delimiter">(</span><span class="Normal">const</span> type_tree* type<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!type<span class="Delimiter">)</span> <span class="Identifier">return</span> <span class="Constant">0</span><span class="Delimiter">;</span>
<span class="Normal">long</span> <span class="Normal">long</span> <span class="Normal">int</span> result = <span class="Constant">0</span><span class="Delimiter">;</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!type<span class="Delimiter">-></span>name<span class="Delimiter">.</span>empty<span class="Delimiter">()</span> && !is_type_ingredient_name<span class="Delimiter">(</span>type<span class="Delimiter">-></span>name<span class="Delimiter">))</span>
result++<span class="Delimiter">;</span>
result += number_of_concrete_type_names<span class="Delimiter">(</span>type<span class="Delimiter">-></span>left<span class="Delimiter">);</span>
result += number_of_concrete_type_names<span class="Delimiter">(</span>type<span class="Delimiter">-></span>right<span class="Delimiter">);</span>
<span class="Identifier">return</span> result<span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Normal">bool</span> concrete_type_names_strictly_match<span class="Delimiter">(</span><span class="Normal">const</span> type_tree* to<span class="Delimiter">,</span> <span class="Normal">const</span> type_tree* from<span class="Delimiter">,</span> <span class="Normal">const</span> reagent& rhs_reagent<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!to<span class="Delimiter">)</span> <span class="Identifier">return</span> !from<span class="Delimiter">;</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!from<span class="Delimiter">)</span> <span class="Identifier">return</span> !to<span class="Delimiter">;</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>is_type_ingredient_name<span class="Delimiter">(</span>to<span class="Delimiter">-></span>name<span class="Delimiter">))</span> <span class="Identifier">return</span> <span class="Constant">true</span><span class="Delimiter">;</span> <span class="Comment">// type ingredient matches anything</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>to<span class="Delimiter">-></span>name == <span class="Constant">"literal"</span> && from<span class="Delimiter">-></span>name == <span class="Constant">"literal"</span><span class="Delimiter">)</span>
<span class="Identifier">return</span> <span class="Constant">true</span><span class="Delimiter">;</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>to<span class="Delimiter">-></span>name == <span class="Constant">"literal"</span>
&& Literal_type_names<span class="Delimiter">.</span>find<span class="Delimiter">(</span>from<span class="Delimiter">-></span>name<span class="Delimiter">)</span> != Literal_type_names<span class="Delimiter">.</span>end<span class="Delimiter">())</span>
<span class="Identifier">return</span> <span class="Constant">true</span><span class="Delimiter">;</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>from<span class="Delimiter">-></span>name == <span class="Constant">"literal"</span>
&& Literal_type_names<span class="Delimiter">.</span>find<span class="Delimiter">(</span>to<span class="Delimiter">-></span>name<span class="Delimiter">)</span> != Literal_type_names<span class="Delimiter">.</span>end<span class="Delimiter">())</span>
<span class="Identifier">return</span> <span class="Constant">true</span><span class="Delimiter">;</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>from<span class="Delimiter">-></span>name == <span class="Constant">"literal"</span> && to<span class="Delimiter">-></span>name == <span class="Constant">"address"</span><span class="Delimiter">)</span>
<span class="Identifier">return</span> rhs_reagent<span class="Delimiter">.</span>name == <span class="Constant">"0"</span><span class="Delimiter">;</span>
<span class="Identifier">return</span> to<span class="Delimiter">-></span>name == from<span class="Delimiter">-></span>name
&& concrete_type_names_strictly_match<span class="Delimiter">(</span>to<span class="Delimiter">-></span>left<span class="Delimiter">,</span> from<span class="Delimiter">-></span>left<span class="Delimiter">,</span> rhs_reagent<span class="Delimiter">)</span>
&& concrete_type_names_strictly_match<span class="Delimiter">(</span>to<span class="Delimiter">-></span>right<span class="Delimiter">,</span> from<span class="Delimiter">-></span>right<span class="Delimiter">,</span> rhs_reagent<span class="Delimiter">);</span>
<span class="Delimiter">}</span>
<span class="Normal">bool</span> contains_type_ingredient_name<span class="Delimiter">(</span><span class="Normal">const</span> reagent& x<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Identifier">return</span> contains_type_ingredient_name<span class="Delimiter">(</span>x<span class="Delimiter">.</span>type<span class="Delimiter">);</span>
<span class="Delimiter">}</span>
<span class="Normal">bool</span> contains_type_ingredient_name<span class="Delimiter">(</span><span class="Normal">const</span> type_tree* type<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!type<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>is_type_ingredient_name<span class="Delimiter">(</span>type<span class="Delimiter">-></span>name<span class="Delimiter">))</span> <span class="Identifier">return</span> <span class="Constant">true</span><span class="Delimiter">;</span>
<span class="Identifier">return</span> contains_type_ingredient_name<span class="Delimiter">(</span>type<span class="Delimiter">-></span>left<span class="Delimiter">)</span> || contains_type_ingredient_name<span class="Delimiter">(</span>type<span class="Delimiter">-></span>right<span class="Delimiter">);</span>
<span class="Delimiter">}</span>
recipe_ordinal new_variant<span class="Delimiter">(</span>recipe_ordinal exemplar<span class="Delimiter">,</span> <span class="Normal">const</span> instruction& inst<span class="Delimiter">,</span> <span class="Normal">const</span> recipe& caller_recipe<span class="Delimiter">)</span> <span class="Delimiter">{</span>
string new_name = next_unused_recipe_name<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>name<span class="Delimiter">);</span>
assert<span class="Delimiter">(</span>!contains_key<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> new_name<span class="Delimiter">));</span>
recipe_ordinal new_recipe_ordinal = put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> new_name<span class="Delimiter">,</span> Next_recipe_ordinal++<span class="Delimiter">);</span>
<span class="Comment">// make a copy</span>
assert<span class="Delimiter">(</span>contains_key<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> exemplar<span class="Delimiter">));</span>
assert<span class="Delimiter">(</span>!contains_key<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> new_recipe_ordinal<span class="Delimiter">));</span>
Recently_added_recipes<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>new_recipe_ordinal<span class="Delimiter">);</span>
Recently_added_shape_shifting_recipes<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>new_recipe_ordinal<span class="Delimiter">);</span>
put<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> new_recipe_ordinal<span class="Delimiter">,</span> get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> exemplar<span class="Delimiter">));</span>
recipe& new_recipe = get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> new_recipe_ordinal<span class="Delimiter">);</span>
new_recipe<span class="Delimiter">.</span>name = new_name<span class="Delimiter">;</span>
trace<span class="Delimiter">(</span><span class="Constant">9993</span><span class="Delimiter">,</span> <span class="Constant">"transform"</span><span class="Delimiter">)</span> << <span class="Constant">"switching "</span> << inst<span class="Delimiter">.</span>name << <span class="Constant">" to specialized "</span> << header_label<span class="Delimiter">(</span>new_recipe_ordinal<span class="Delimiter">)</span> << end<span class="Delimiter">();</span>
<span class="Comment">// Since the exemplar never ran any transforms, we have to redo some of the</span>
<span class="Comment">// work of the check_types_by_name transform while supporting type-ingredients.</span>
compute_type_names<span class="Delimiter">(</span>new_recipe<span class="Delimiter">);</span>
<span class="Comment">// that gives enough information to replace type-ingredients with concrete types</span>
<span class="Delimiter">{</span>
map<string<span class="Delimiter">,</span> <span class="Normal">const</span> type_tree*> mappings<span class="Delimiter">;</span>
<span class="Normal">bool</span> error = <span class="Constant">false</span><span class="Delimiter">;</span>
compute_type_ingredient_mappings<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> exemplar<span class="Delimiter">),</span> inst<span class="Delimiter">,</span> mappings<span class="Delimiter">,</span> caller_recipe<span class="Delimiter">,</span> &error<span class="Delimiter">);</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!error<span class="Delimiter">)</span> replace_type_ingredients<span class="Delimiter">(</span>new_recipe<span class="Delimiter">,</span> mappings<span class="Delimiter">);</span>
<span class="Normal">for</span> <span class="Delimiter">(</span>map<string<span class="Delimiter">,</span> <span class="Normal">const</span> type_tree*>::iterator p = mappings<span class="Delimiter">.</span>begin<span class="Delimiter">();</span> p != mappings<span class="Delimiter">.</span>end<span class="Delimiter">();</span> ++p<span class="Delimiter">)</span>
<span class="Normal">delete</span> p<span class="Delimiter">-></span>second<span class="Delimiter">;</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>error<span class="Delimiter">)</span> <span class="Identifier">return</span> <span class="Constant">0</span><span class="Delimiter">;</span> <span class="Comment">// todo: delete new_recipe_ordinal from Recipes and other global state</span>
<span class="Delimiter">}</span>
ensure_all_concrete_types<span class="Delimiter">(</span>new_recipe<span class="Delimiter">,</span> get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> exemplar<span class="Delimiter">));</span>
<span class="Identifier">return</span> new_recipe_ordinal<span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Normal">void</span> compute_type_names<span class="Delimiter">(</span>recipe& variant<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">"transform"</span><span class="Delimiter">)</span> << <span class="Constant">"compute type names: "</span> << variant<span class="Delimiter">.</span>name << end<span class="Delimiter">();</span>
map<string<span class="Delimiter">,</span> type_tree*> type_names<span class="Delimiter">;</span>
<span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">long</span> <span class="Normal">long</span> <span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < SIZE<span class="Delimiter">(</span>variant<span class="Delimiter">.</span>ingredients<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span>
save_or_deduce_type_name<span class="Delimiter">(</span>variant<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">),</span> type_names<span class="Delimiter">,</span> variant<span class="Delimiter">);</span>
<span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">long</span> <span class="Normal">long</span> <span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < SIZE<span class="Delimiter">(</span>variant<span class="Delimiter">.</span>products<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span>
save_or_deduce_type_name<span class="Delimiter">(</span>variant<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">),</span> type_names<span class="Delimiter">,</span> variant<span class="Delimiter">);</span>
<span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">long</span> <span class="Normal">long</span> <span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < SIZE<span class="Delimiter">(</span>variant<span class="Delimiter">.</span>steps<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
instruction& inst = variant<span class="Delimiter">.</span>steps<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">);</span>
trace<span class="Delimiter">(</span><span class="Constant">9993</span><span class="Delimiter">,</span> <span class="Constant">"transform"</span><span class="Delimiter">)</span> << <span class="Constant">" instruction: "</span> << to_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> << end<span class="Delimiter">();</span>
<span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">long</span> <span class="Normal">long</span> <span class="Normal">int</span> in = <span class="Constant">0</span><span class="Delimiter">;</span> in < SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">);</span> ++in<span class="Delimiter">)</span>
save_or_deduce_type_name<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>in<span class="Delimiter">),</span> type_names<span class="Delimiter">,</span> variant<span class="Delimiter">);</span>
<span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">long</span> <span class="Normal">long</span> <span class="Normal">int</span> out = <span class="Constant">0</span><span class="Delimiter">;</span> out < SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">);</span> ++out<span class="Delimiter">)</span>
save_or_deduce_type_name<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>out<span class="Delimiter">),</span> type_names<span class="Delimiter">,</span> variant<span class="Delimiter">);</span>
<span class="Delimiter">}</span>
<span class="Delimiter">}</span>
<span class="Normal">void</span> save_or_deduce_type_name<span class="Delimiter">(</span>reagent& x<span class="Delimiter">,</span> map<string<span class="Delimiter">,</span> type_tree*>& type<span class="Delimiter">,</span> <span class="Normal">const</span> recipe& variant<span class="Delimiter">)</span> <span class="Delimiter">{</span>
trace<span class="Delimiter">(</span><span class="Constant">9994</span><span class="Delimiter">,</span> <span class="Constant">"transform"</span><span class="Delimiter">)</span> << <span class="Constant">" checking "</span> << to_string<span class="Delimiter">(</span>x<span class="Delimiter">)</span> << <span class="Constant">": "</span> << names_to_string<span class="Delimiter">(</span>x<span class="Delimiter">.</span>type<span class="Delimiter">)</span> << end<span class="Delimiter">();</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!x<span class="Delimiter">.</span>type && contains_key<span class="Delimiter">(</span>type<span class="Delimiter">,</span> x<span class="Delimiter">.</span>name<span class="Delimiter">))</span> <span class="Delimiter">{</span>
x<span class="Delimiter">.</span>type = <span class="Normal">new</span> type_tree<span class="Delimiter">(</span>*get<span class="Delimiter">(</span>type<span class="Delimiter">,</span> x<span class="Delimiter">.</span>name<span class="Delimiter">));</span> <span class="Comment">//</span><span class="Todo">TODO</span>
trace<span class="Delimiter">(</span><span class="Constant">9994</span><span class="Delimiter">,</span> <span class="Constant">"transform"</span><span class="Delimiter">)</span> << <span class="Constant">" deducing type to "</span> << names_to_string<span class="Delimiter">(</span>x<span class="Delimiter">.</span>type<span class="Delimiter">)</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>!x<span class="Delimiter">.</span>type<span class="Delimiter">)</span> <span class="Delimiter">{</span>
raise << maybe<span class="Delimiter">(</span>variant<span class="Delimiter">.</span>original_name<span class="Delimiter">)</span> << <span class="Constant">"unknown type for "</span> << x<span class="Delimiter">.</span>original_string << <span class="Constant">" (check the name for typos)</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>contains_key<span class="Delimiter">(</span>type<span class="Delimiter">,</span> x<span class="Delimiter">.</span>name<span class="Delimiter">))</span> <span class="Identifier">return</span><span class="Delimiter">;</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>x<span class="Delimiter">.</span>type<span class="Delimiter">-></span>name == <span class="Constant">"offset"</span> || x<span class="Delimiter">.</span>type<span class="Delimiter">-></span>name == <span class="Constant">"variant"</span><span class="Delimiter">)</span> <span class="Identifier">return</span><span class="Delimiter">;</span> <span class="Comment">// special-case for container-access instructions</span>
put<span class="Delimiter">(</span>type<span class="Delimiter">,</span> x<span class="Delimiter">.</span>name<span class="Delimiter">,</span> x<span class="Delimiter">.</span>type<span class="Delimiter">);</span>
trace<span class="Delimiter">(</span><span class="Constant">9993</span><span class="Delimiter">,</span> <span class="Constant">"transform"</span><span class="Delimiter">)</span> << <span class="Constant">"type of "</span> << x<span class="Delimiter">.</span>name << <span class="Constant">" is "</span> << names_to_string<span class="Delimiter">(</span>x<span class="Delimiter">.</span>type<span class="Delimiter">)</span> << end<span class="Delimiter">();</span>
<span class="Delimiter">}</span>
<span class="Normal">void</span> compute_type_ingredient_mappings<span class="Delimiter">(</span><span class="Normal">const</span> recipe& exemplar<span class="Delimiter">,</span> <span class="Normal">const</span> instruction& inst<span class="Delimiter">,</span> map<string<span class="Delimiter">,</span> <span class="Normal">const</span> type_tree*>& mappings<span class="Delimiter">,</span> <span class="Normal">const</span> recipe& caller_recipe<span class="Delimiter">,</span> <span class="Normal">bool</span>* error<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Normal">long</span> <span class="Normal">long</span> <span class="Normal">int</span> limit = min<span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">),</span> SIZE<span class="Delimiter">(</span>exemplar<span class="Delimiter">.</span>ingredients<span class="Delimiter">));</span>
<span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">long</span> <span class="Normal">long</span> <span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < limit<span class="Delimiter">;</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Normal">const</span> reagent& exemplar_reagent = exemplar<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">);</span>
reagent ingredient = inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">);</span>
canonize_type<span class="Delimiter">(</span>ingredient<span class="Delimiter">);</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>is_mu_address<span class="Delimiter">(</span>exemplar_reagent<span class="Delimiter">)</span> && ingredient<span class="Delimiter">.</span>name == <span class="Constant">"0"</span><span class="Delimiter">)</span> <span class="Identifier">continue</span><span class="Delimiter">;</span> <span class="Comment">// assume it matches</span>
accumulate_type_ingredients<span class="Delimiter">(</span>exemplar_reagent<span class="Delimiter">,</span> ingredient<span class="Delimiter">,</span> mappings<span class="Delimiter">,</span> exemplar<span class="Delimiter">,</span> inst<span class="Delimiter">,</span> caller_recipe<span class="Delimiter">,</span> error<span class="Delimiter">);</span>
<span class="Delimiter">}</span>
limit = min<span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">),</span> SIZE<span class="Delimiter">(</span>exemplar<span class="Delimiter">.</span>products<span class="Delimiter">));</span>
<span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">long</span> <span class="Normal">long</span> <span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < limit<span class="Delimiter">;</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Normal">const</span> reagent& exemplar_reagent = exemplar<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">);</span>
reagent product = inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">);</span>
canonize_type<span class="Delimiter">(</span>product<span class="Delimiter">);</span>
accumulate_type_ingredients<span class="Delimiter">(</span>exemplar_reagent<span class="Delimiter">,</span> product<span class="Delimiter">,</span> mappings<span class="Delimiter">,</span> exemplar<span class="Delimiter">,</span> inst<span class="Delimiter">,</span> caller_recipe<span class="Delimiter">,</span> error<span class="Delimiter">);</span>
<span class="Delimiter">}</span>
<span class="Delimiter">}</span>
<span class="Normal">inline</span> <span class="Normal">long</span> <span class="Normal">long</span> <span class="Normal">int</span> min<span class="Delimiter">(</span><span class="Normal">long</span> <span class="Normal">long</span> <span class="Normal">int</span> a<span class="Delimiter">,</span> <span class="Normal">long</span> <span class="Normal">long</span> <span class="Normal">int</span> b<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Identifier">return</span> <span class="Delimiter">(</span>a < b<span class="Delimiter">)</span> ? a : b<span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Normal">void</span> accumulate_type_ingredients<span class="Delimiter">(</span><span class="Normal">const</span> reagent& exemplar_reagent<span class="Delimiter">,</span> reagent& refinement<span class="Delimiter">,</span> map<string<span class="Delimiter">,</span> <span class="Normal">const</span> type_tree*>& mappings<span class="Delimiter">,</span> <span class="Normal">const</span> recipe& exemplar<span class="Delimiter">,</span> <span class="Normal">const</span> instruction& call_instruction<span class="Delimiter">,</span> <span class="Normal">const</span> recipe& caller_recipe<span class="Delimiter">,</span> <span class="Normal">bool</span>* error<span class="Delimiter">)</span> <span class="Delimiter">{</span>
assert<span class="Delimiter">(</span>refinement<span class="Delimiter">.</span>type<span class="Delimiter">);</span>
accumulate_type_ingredients<span class="Delimiter">(</span>exemplar_reagent<span class="Delimiter">.</span>type<span class="Delimiter">,</span> refinement<span class="Delimiter">.</span>type<span class="Delimiter">,</span> mappings<span class="Delimiter">,</span> exemplar<span class="Delimiter">,</span> exemplar_reagent<span class="Delimiter">,</span> call_instruction<span class="Delimiter">,</span> caller_recipe<span class="Delimiter">,</span> error<span class="Delimiter">);</span>
<span class="Delimiter">}</span>
<span class="Normal">void</span> accumulate_type_ingredients<span class="Delimiter">(</span><span class="Normal">const</span> type_tree* exemplar_type<span class="Delimiter">,</span> <span class="Normal">const</span> type_tree* refinement_type<span class="Delimiter">,</span> map<string<span class="Delimiter">,</span> <span class="Normal">const</span> type_tree*>& mappings<span class="Delimiter">,</span> <span class="Normal">const</span> recipe& exemplar<span class="Delimiter">,</span> <span class="Normal">const</span> reagent& exemplar_reagent<span class="Delimiter">,</span> <span class="Normal">const</span> instruction& call_instruction<span class="Delimiter">,</span> <span class="Normal">const</span> recipe& caller_recipe<span class="Delimiter">,</span> <span class="Normal">bool</span>* error<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!exemplar_type<span class="Delimiter">)</span> <span class="Identifier">return</span><span class="Delimiter">;</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!refinement_type<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Comment">// todo: make this smarter; only flag an error if exemplar_type contains some *new* type ingredient</span>
raise << maybe<span class="Delimiter">(</span>exemplar<span class="Delimiter">.</span>name<span class="Delimiter">)</span> << <span class="Constant">"missing type ingredient in "</span> << exemplar_reagent<span class="Delimiter">.</span>original_string << <span class="cSpecial">'\n'</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>is_type_ingredient_name<span class="Delimiter">(</span>exemplar_type<span class="Delimiter">-></span>name<span class="Delimiter">))</span> <span class="Delimiter">{</span>
<span class="Normal">const</span> type_tree* curr_refinement_type = <span class="Constant">NULL</span><span class="Delimiter">;</span> <span class="Comment">// temporary heap allocation; must always be deleted before it goes out of scope</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>refinement_type<span class="Delimiter">-></span>left<span class="Delimiter">)</span>
curr_refinement_type = <span class="Normal">new</span> type_tree<span class="Delimiter">(</span>*refinement_type<span class="Delimiter">-></span>left<span class="Delimiter">);</span>
<span class="Normal">else</span> <span class="Normal">if</span> <span class="Delimiter">(</span>exemplar_type<span class="Delimiter">-></span>right<span class="Delimiter">)</span>
<span class="Comment">// splice out refinement_type->right, it'll be used later by the exemplar_type->right</span>
curr_refinement_type = <span class="Normal">new</span> type_tree<span class="Delimiter">(</span>refinement_type<span class="Delimiter">-></span>name<span class="Delimiter">,</span> refinement_type<span class="Delimiter">-></span>value<span class="Delimiter">,</span> <span class="Constant">NULL</span><span class="Delimiter">);</span>
<span class="Normal">else</span>
curr_refinement_type = <span class="Normal">new</span> type_tree<span class="Delimiter">(</span>*refinement_type<span class="Delimiter">);</span>
assert<span class="Delimiter">(</span>!curr_refinement_type<span class="Delimiter">-></span>left<span class="Delimiter">);</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!contains_key<span class="Delimiter">(</span>mappings<span class="Delimiter">,</span> exemplar_type<span class="Delimiter">-></span>name<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">"transform"</span><span class="Delimiter">)</span> << <span class="Constant">"adding mapping from "</span> << exemplar_type<span class="Delimiter">-></span>name << <span class="Constant">" to "</span> << to_string<span class="Delimiter">(</span>curr_refinement_type<span class="Delimiter">)</span> << end<span class="Delimiter">();</span>
put<span class="Delimiter">(</span>mappings<span class="Delimiter">,</span> exemplar_type<span class="Delimiter">-></span>name<span class="Delimiter">,</span> <span class="Normal">new</span> type_tree<span class="Delimiter">(</span>*curr_refinement_type<span class="Delimiter">));</span>
<span class="Delimiter">}</span>
<span class="Normal">else</span> <span class="Delimiter">{</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!deeply_equal_type_names<span class="Delimiter">(</span>get<span class="Delimiter">(</span>mappings<span class="Delimiter">,</span> exemplar_type<span class="Delimiter">-></span>name<span class="Delimiter">),</span> curr_refinement_type<span class="Delimiter">))</span> <span class="Delimiter">{</span>
raise << maybe<span class="Delimiter">(</span>caller_recipe<span class="Delimiter">.</span>name<span class="Delimiter">)</span> << <span class="Constant">"no call found for '"</span> << to_string<span class="Delimiter">(</span>call_instruction<span class="Delimiter">)</span> << <span class="Constant">"'</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span>
*error = <span class="Constant">true</span><span class="Delimiter">;</span>
<span class="Normal">delete</span> curr_refinement_type<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>get<span class="Delimiter">(</span>mappings<span class="Delimiter">,</span> exemplar_type<span class="Delimiter">-></span>name<span class="Delimiter">)-></span>name == <span class="Constant">"literal"</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Normal">delete</span> get<span class="Delimiter">(</span>mappings<span class="Delimiter">,</span> exemplar_type<span class="Delimiter">-></span>name<span class="Delimiter">);</span>
put<span class="Delimiter">(</span>mappings<span class="Delimiter">,</span> exemplar_type<span class="Delimiter">-></span>name<span class="Delimiter">,</span> <span class="Normal">new</span> type_tree<span class="Delimiter">(</span>*curr_refinement_type<span class="Delimiter">));</span>
<span class="Delimiter">}</span>
<span class="Delimiter">}</span>
<span class="Normal">delete</span> curr_refinement_type<span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Normal">else</span> <span class="Delimiter">{</span>
accumulate_type_ingredients<span class="Delimiter">(</span>exemplar_type<span class="Delimiter">-></span>left<span class="Delimiter">,</span> refinement_type<span class="Delimiter">-></span>left<span class="Delimiter">,</span> mappings<span class="Delimiter">,</span> exemplar<span class="Delimiter">,</span> exemplar_reagent<span class="Delimiter">,</span> call_instruction<span class="Delimiter">,</span> caller_recipe<span class="Delimiter">,</span> error<span class="Delimiter">);</span>
<span class="Delimiter">}</span>
accumulate_type_ingredients<span class="Delimiter">(</span>exemplar_type<span class="Delimiter">-></span>right<span class="Delimiter">,</span> refinement_type<span class="Delimiter">-></span>right<span class="Delimiter">,</span> mappings<span class="Delimiter">,</span> exemplar<span class="Delimiter">,</span> exemplar_reagent<span class="Delimiter">,</span> call_instruction<span class="Delimiter">,</span> caller_recipe<span class="Delimiter">,</span> error<span class="Delimiter">);</span>
<span class="Delimiter">}</span>
<span class="Normal">void</span> replace_type_ingredients<span class="Delimiter">(</span>recipe& new_recipe<span class="Delimiter">,</span> <span class="Normal">const</span> map<string<span class="Delimiter">,</span> <span class="Normal">const</span> type_tree*>& mappings<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Comment">// update its header</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>mappings<span class="Delimiter">.</span>empty<span class="Delimiter">())</span> <span class="Identifier">return</span><span class="Delimiter">;</span>
trace<span class="Delimiter">(</span><span class="Constant">9993</span><span class="Delimiter">,</span> <span class="Constant">"transform"</span><span class="Delimiter">)</span> << <span class="Constant">"replacing in recipe header ingredients"</span> << end<span class="Delimiter">();</span>
<span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">long</span> <span class="Normal">long</span> <span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < SIZE<span class="Delimiter">(</span>new_recipe<span class="Delimiter">.</span>ingredients<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span>
replace_type_ingredients<span class="Delimiter">(</span>new_recipe<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">),</span> mappings<span class="Delimiter">,</span> new_recipe<span class="Delimiter">);</span>
trace<span class="Delimiter">(</span><span class="Constant">9993</span><span class="Delimiter">,</span> <span class="Constant">"transform"</span><span class="Delimiter">)</span> << <span class="Constant">"replacing in recipe header products"</span> << end<span class="Delimiter">();</span>
<span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">long</span> <span class="Normal">long</span> <span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < SIZE<span class="Delimiter">(</span>new_recipe<span class="Delimiter">.</span>products<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span>
replace_type_ingredients<span class="Delimiter">(</span>new_recipe<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">),</span> mappings<span class="Delimiter">,</span> new_recipe<span class="Delimiter">);</span>
<span class="Comment">// update its body</span>
<span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">long</span> <span class="Normal">long</span> <span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < SIZE<span class="Delimiter">(</span>new_recipe<span class="Delimiter">.</span>steps<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
instruction& inst = new_recipe<span class="Delimiter">.</span>steps<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">);</span>
trace<span class="Delimiter">(</span><span class="Constant">9993</span><span class="Delimiter">,</span> <span class="Constant">"transform"</span><span class="Delimiter">)</span> << <span class="Constant">"replacing in instruction '"</span> << to_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> << <span class="Constant">"'"</span> << end<span class="Delimiter">();</span>
<span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">long</span> <span class="Normal">long</span> <span class="Normal">int</span> j = <span class="Constant">0</span><span class="Delimiter">;</span> j < SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">);</span> ++j<span class="Delimiter">)</span>
replace_type_ingredients<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>j<span class="Delimiter">),</span> mappings<span class="Delimiter">,</span> new_recipe<span class="Delimiter">);</span>
<span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">long</span> <span class="Normal">long</span> <span class="Normal">int</span> j = <span class="Constant">0</span><span class="Delimiter">;</span> j < SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">);</span> ++j<span class="Delimiter">)</span>
replace_type_ingredients<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>j<span class="Delimiter">),</span> mappings<span class="Delimiter">,</span> new_recipe<span class="Delimiter">);</span>
<span class="Comment">// special-case for new: replace type ingredient in first ingredient *value*</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>inst<span class="Delimiter">.</span>name == <span class="Constant">"new"</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>type<span class="Delimiter">-></span>name != <span class="Constant">"literal-string"</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
type_tree* type = parse_type_tree<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>name<span class="Delimiter">);</span>
replace_type_ingredients<span class="Delimiter">(</span>type<span class="Delimiter">,</span> mappings<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>name = inspect<span class="Delimiter">(</span>type<span class="Delimiter">);</span>
<span class="Normal">delete</span> type<span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Delimiter">}</span>
<span class="Delimiter">}</span>
<span class="Normal">void</span> replace_type_ingredients<span class="Delimiter">(</span>reagent& x<span class="Delimiter">,</span> <span class="Normal">const</span> map<string<span class="Delimiter">,</span> <span class="Normal">const</span> type_tree*>& mappings<span class="Delimiter">,</span> <span class="Normal">const</span> recipe& caller<span class="Delimiter">)</span> <span class="Delimiter">{</span>
string before = to_string<span class="Delimiter">(</span>x<span class="Delimiter">);</span>
trace<span class="Delimiter">(</span><span class="Constant">9993</span><span class="Delimiter">,</span> <span class="Constant">"transform"</span><span class="Delimiter">)</span> << <span class="Constant">"replacing in ingredient "</span> << x<span class="Delimiter">.</span>original_string << end<span class="Delimiter">();</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!x<span class="Delimiter">.</span>type<span class="Delimiter">)</span> <span class="Delimiter">{</span>
raise << <span class="Constant">"specializing "</span> << caller<span class="Delimiter">.</span>original_name << <span class="Constant">": missing type for "</span> << x<span class="Delimiter">.</span>original_string << <span class="cSpecial">'\n'</span> << end<span class="Delimiter">();</span>
<span class="Identifier">return</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
replace_type_ingredients<span class="Delimiter">(</span>x<span class="Delimiter">.</span>type<span class="Delimiter">,</span> mappings<span class="Delimiter">);</span>
<span class="Delimiter">}</span>
<span class="Comment">// todo: too complicated and likely incomplete; maybe avoid replacing in place?</span>
<span class="Normal">void</span> replace_type_ingredients<span class="Delimiter">(</span>type_tree* type<span class="Delimiter">,</span> <span class="Normal">const</span> map<string<span class="Delimiter">,</span> <span class="Normal">const</span> type_tree*>& mappings<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!type<span class="Delimiter">)</span> <span class="Identifier">return</span><span class="Delimiter">;</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>contains_key<span class="Delimiter">(</span>Type_ordinal<span class="Delimiter">,</span> type<span class="Delimiter">-></span>name<span class="Delimiter">))</span> <span class="Comment">// todo: ugly side effect</span>
type<span class="Delimiter">-></span>value = get<span class="Delimiter">(</span>Type_ordinal<span class="Delimiter">,</span> type<span class="Delimiter">-></span>name<span class="Delimiter">);</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!is_type_ingredient_name<span class="Delimiter">(</span>type<span class="Delimiter">-></span>name<span class="Delimiter">)</span> || !contains_key<span class="Delimiter">(</span>mappings<span class="Delimiter">,</span> type<span class="Delimiter">-></span>name<span class="Delimiter">))</span> <span class="Delimiter">{</span>
replace_type_ingredients<span class="Delimiter">(</span>type<span class="Delimiter">-></span>left<span class="Delimiter">,</span> mappings<span class="Delimiter">);</span>
replace_type_ingredients<span class="Delimiter">(</span>type<span class="Delimiter">-></span>right<span class="Delimiter">,</span> mappings<span class="Delimiter">);</span>
<span class="Identifier">return</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Normal">const</span> type_tree* replacement = get<span class="Delimiter">(</span>mappings<span class="Delimiter">,</span> type<span class="Delimiter">-></span>name<span class="Delimiter">);</span>
trace<span class="Delimiter">(</span><span class="Constant">9993</span><span class="Delimiter">,</span> <span class="Constant">"transform"</span><span class="Delimiter">)</span> << type<span class="Delimiter">-></span>name << <span class="Constant">" => "</span> << names_to_string<span class="Delimiter">(</span>replacement<span class="Delimiter">)</span> << end<span class="Delimiter">();</span>
<span class="Comment">// type is a single type ingredient</span>
assert<span class="Delimiter">(</span>!type<span class="Delimiter">-></span>left<span class="Delimiter">);</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!type<span class="Delimiter">-></span>right<span class="Delimiter">)</span> assert<span class="Delimiter">(</span>!replacement<span class="Delimiter">-></span>left<span class="Delimiter">);</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!replacement<span class="Delimiter">-></span>right<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!replacement<span class="Delimiter">-></span>left<span class="Delimiter">)</span> <span class="Delimiter">{</span>
type<span class="Delimiter">-></span>name = <span class="Delimiter">(</span>replacement<span class="Delimiter">-></span>name == <span class="Constant">"literal"</span><span class="Delimiter">)</span> ? <span class="Constant">"number"</span> : replacement<span class="Delimiter">-></span>name<span class="Delimiter">;</span>
type<span class="Delimiter">-></span>value = get<span class="Delimiter">(</span>Type_ordinal<span class="Delimiter">,</span> type<span class="Delimiter">-></span>name<span class="Delimiter">);</span>
<span class="Delimiter">}</span>
<span class="Normal">else</span> <span class="Delimiter">{</span>
type<span class="Delimiter">-></span>name = <span class="Constant">""</span><span class="Delimiter">;</span>
type<span class="Delimiter">-></span>value = <span class="Constant">0</span><span class="Delimiter">;</span>
type<span class="Delimiter">-></span>left = <span class="Normal">new</span> type_tree<span class="Delimiter">(</span>*replacement<span class="Delimiter">);</span>
<span class="Delimiter">}</span>
replace_type_ingredients<span class="Delimiter">(</span>type<span class="Delimiter">-></span>right<span class="Delimiter">,</span> mappings<span class="Delimiter">);</span>
<span class="Delimiter">}</span>
<span class="Comment">// replace non-last type?</span>
<span class="Normal">else</span> <span class="Normal">if</span> <span class="Delimiter">(</span>type<span class="Delimiter">-></span>right<span class="Delimiter">)</span> <span class="Delimiter">{</span>
type<span class="Delimiter">-></span>name = <span class="Constant">""</span><span class="Delimiter">;</span>
type<span class="Delimiter">-></span>value = <span class="Constant">0</span><span class="Delimiter">;</span>
type<span class="Delimiter">-></span>left = <span class="Normal">new</span> type_tree<span class="Delimiter">(</span>*replacement<span class="Delimiter">);</span>
replace_type_ingredients<span class="Delimiter">(</span>type<span class="Delimiter">-></span>right<span class="Delimiter">,</span> mappings<span class="Delimiter">);</span>
<span class="Delimiter">}</span>
<span class="Comment">// replace last type?</span>
<span class="Normal">else</span> <span class="Delimiter">{</span>
type<span class="Delimiter">-></span>name = replacement<span class="Delimiter">-></span>name<span class="Delimiter">;</span>
type<span class="Delimiter">-></span>value = get<span class="Delimiter">(</span>Type_ordinal<span class="Delimiter">,</span> type<span class="Delimiter">-></span>name<span class="Delimiter">);</span>
type<span class="Delimiter">-></span>right = <span class="Normal">new</span> type_tree<span class="Delimiter">(</span>*replacement<span class="Delimiter">-></span>right<span class="Delimiter">);</span>
<span class="Delimiter">}</span>
<span class="Delimiter">}</span>
type_tree* parse_type_tree<span class="Delimiter">(</span><span class="Normal">const</span> string& s<span class="Delimiter">)</span> <span class="Delimiter">{</span>
istringstream in<span class="Delimiter">(</span>s<span class="Delimiter">);</span>
in >> std::noskipws<span class="Delimiter">;</span>
<span class="Identifier">return</span> parse_type_tree<span class="Delimiter">(</span>in<span class="Delimiter">);</span>
<span class="Delimiter">}</span>
type_tree* parse_type_tree<span class="Delimiter">(</span>istream& in<span class="Delimiter">)</span> <span class="Delimiter">{</span>
skip_whitespace_but_not_newline<span class="Delimiter">(</span>in<span class="Delimiter">);</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!has_data<span class="Delimiter">(</span>in<span class="Delimiter">))</span> <span class="Identifier">return</span> <span class="Constant">NULL</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="Delimiter">{</span>
in<span class="Delimiter">.</span>get<span class="Delimiter">();</span>
<span class="Identifier">return</span> <span class="Constant">NULL</span><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="Delimiter">{</span>
string type_name = next_word<span class="Delimiter">(</span>in<span class="Delimiter">);</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!contains_key<span class="Delimiter">(</span>Type_ordinal<span class="Delimiter">,</span> type_name<span class="Delimiter">))</span>
put<span class="Delimiter">(</span>Type_ordinal<span class="Delimiter">,</span> type_name<span class="Delimiter">,</span> Next_type_ordinal++<span class="Delimiter">);</span>
type_tree* result = <span class="Normal">new</span> type_tree<span class="Delimiter">(</span>type_name<span class="Delimiter">,</span> get<span class="Delimiter">(</span>Type_ordinal<span class="Delimiter">,</span> type_name<span class="Delimiter">));</span>
<span class="Identifier">return</span> result<span class="Delimiter">;</span>
<span class="Delimiter">}</span>
in<span class="Delimiter">.</span>get<span class="Delimiter">();</span> <span class="Comment">// skip '('</span>
type_tree* result = <span class="Constant">NULL</span><span class="Delimiter">;</span>
type_tree** curr = &result<span class="Delimiter">;</span>
<span class="Normal">while</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="Delimiter">{</span>
assert<span class="Delimiter">(</span>has_data<span class="Delimiter">(</span>in<span class="Delimiter">));</span>
*curr = <span class="Normal">new</span> type_tree<span class="Delimiter">(</span><span class="Constant">""</span><span class="Delimiter">,</span> <span class="Constant">0</span><span class="Delimiter">);</span>
skip_whitespace_but_not_newline<span class="Delimiter">(</span>in<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="Delimiter">(</span>*curr<span class="Delimiter">)-></span>left = parse_type_tree<span class="Delimiter">(</span>in<span class="Delimiter">);</span>
<span class="Normal">else</span> <span class="Delimiter">{</span>
<span class="Delimiter">(</span>*curr<span class="Delimiter">)-></span>name = next_word<span class="Delimiter">(</span>in<span class="Delimiter">);</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!is_type_ingredient_name<span class="Delimiter">((</span>*curr<span class="Delimiter">)-></span>name<span class="Delimiter">))</span> <span class="Delimiter">{</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!contains_key<span class="Delimiter">(</span>Type_ordinal<span class="Delimiter">,</span> <span class="Delimiter">(</span>*curr<span class="Delimiter">)-></span>name<span class="Delimiter">))</span>
put<span class="Delimiter">(</span>Type_ordinal<span class="Delimiter">,</span> <span class="Delimiter">(</span>*curr<span class="Delimiter">)-></span>name<span class="Delimiter">,</span> Next_type_ordinal++<span class="Delimiter">);</span>
<span class="Delimiter">(</span>*curr<span class="Delimiter">)-></span>value = get<span class="Delimiter">(</span>Type_ordinal<span class="Delimiter">,</span> <span class="Delimiter">(</span>*curr<span class="Delimiter">)-></span>name<span class="Delimiter">);</span>
<span class="Delimiter">}</span>
<span class="Delimiter">}</span>
curr = &<span class="Delimiter">(</span>*curr<span class="Delimiter">)-></span>right<span class="Delimiter">;</span>
<span class="Delimiter">}</span>
in<span class="Delimiter">.</span>get<span class="Delimiter">();</span> <span class="Comment">// skip ')'</span>
<span class="Identifier">return</span> result<span class="Delimiter">;</span>
<span class="Delimiter">}</span>
string inspect<span class="Delimiter">(</span><span class="Normal">const</span> type_tree* x<span class="Delimiter">)</span> <span class="Delimiter">{</span>
ostringstream out<span class="Delimiter">;</span>
dump_inspect<span class="Delimiter">(</span>x<span class="Delimiter">,</span> out<span class="Delimiter">);</span>
<span class="Identifier">return</span> out<span class="Delimiter">.</span>str<span class="Delimiter">();</span>
<span class="Delimiter">}</span>
<span class="Normal">void</span> dump_inspect<span class="Delimiter">(</span><span class="Normal">const</span> type_tree* x<span class="Delimiter">,</span> ostream& out<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!x<span class="Delimiter">-></span>left && !x<span class="Delimiter">-></span>right<span class="Delimiter">)</span> <span class="Delimiter">{</span>
out << x<span class="Delimiter">-></span>name<span class="Delimiter">;</span>
<span class="Identifier">return</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
out << <span class="Constant">'('</span><span class="Delimiter">;</span>
<span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">const</span> type_tree* curr = x<span class="Delimiter">;</span> curr<span class="Delimiter">;</span> curr = curr<span class="Delimiter">-></span>right<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>curr != x<span class="Delimiter">)</span> out << <span class="Constant">' '</span><span class="Delimiter">;</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>curr<span class="Delimiter">-></span>left<span class="Delimiter">)</span>
dump_inspect<span class="Delimiter">(</span>curr<span class="Delimiter">-></span>left<span class="Delimiter">,</span> out<span class="Delimiter">);</span>
<span class="Normal">else</span>
out << curr<span class="Delimiter">-></span>name<span class="Delimiter">;</span>
<span class="Delimiter">}</span>
out << <span class="Constant">')'</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Normal">void</span> ensure_all_concrete_types<span class="Delimiter">(</span><span class="Comment">/*</span><span class="Comment">const</span><span class="Comment">*/</span> recipe& new_recipe<span class="Delimiter">,</span> <span class="Normal">const</span> recipe& exemplar<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">long</span> <span class="Normal">long</span> <span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < SIZE<span class="Delimiter">(</span>new_recipe<span class="Delimiter">.</span>ingredients<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span>
ensure_all_concrete_types<span class="Delimiter">(</span>new_recipe<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">),</span> exemplar<span class="Delimiter">);</span>
<span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">long</span> <span class="Normal">long</span> <span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < SIZE<span class="Delimiter">(</span>new_recipe<span class="Delimiter">.</span>products<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span>
ensure_all_concrete_types<span class="Delimiter">(</span>new_recipe<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">),</span> exemplar<span class="Delimiter">);</span>
<span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">long</span> <span class="Normal">long</span> <span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < SIZE<span class="Delimiter">(</span>new_recipe<span class="Delimiter">.</span>steps<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
instruction& inst = new_recipe<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">long</span> <span class="Normal">long</span> <span class="Normal">int</span> j = <span class="Constant">0</span><span class="Delimiter">;</span> j < SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">);</span> ++j<span class="Delimiter">)</span>
ensure_all_concrete_types<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>j<span class="Delimiter">),</span> exemplar<span class="Delimiter">);</span>
<span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">long</span> <span class="Normal">long</span> <span class="Normal">int</span> j = <span class="Constant">0</span><span class="Delimiter">;</span> j < SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">);</span> ++j<span class="Delimiter">)</span>
ensure_all_concrete_types<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>j<span class="Delimiter">),</span> exemplar<span class="Delimiter">);</span>
<span class="Delimiter">}</span>
<span class="Delimiter">}</span>
<span class="Normal">void</span> ensure_all_concrete_types<span class="Delimiter">(</span><span class="Comment">/*</span><span class="Comment">const</span><span class="Comment">*/</span> reagent& x<span class="Delimiter">,</span> <span class="Normal">const</span> recipe& exemplar<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!x<span class="Delimiter">.</span>type || contains_type_ingredient_name<span class="Delimiter">(</span>x<span class="Delimiter">.</span>type<span class="Delimiter">))</span> <span class="Delimiter">{</span>
raise << maybe<span class="Delimiter">(</span>exemplar<span class="Delimiter">.</span>name<span class="Delimiter">)</span> << <span class="Constant">"failed to map a type to "</span> << x<span class="Delimiter">.</span>original_string << <span class="cSpecial">'\n'</span> << end<span class="Delimiter">();</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!x<span class="Delimiter">.</span>type<span class="Delimiter">)</span> x<span class="Delimiter">.</span>type = <span class="Normal">new</span> type_tree<span class="Delimiter">(</span><span class="Constant">""</span><span class="Delimiter">,</span> <span class="Constant">0</span><span class="Delimiter">);</span> <span class="Comment">// just to prevent crashes later</span>
<span class="Identifier">return</span><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">-></span>value == -<span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
raise << maybe<span class="Delimiter">(</span>exemplar<span class="Delimiter">.</span>name<span class="Delimiter">)</span> << <span class="Constant">"failed to map a type to the unknown "</span> << x<span class="Delimiter">.</span>original_string << <span class="cSpecial">'\n'</span> << end<span class="Delimiter">();</span>
<span class="Identifier">return</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Delimiter">}</span>
<span class="Delimiter">:(scenario shape_shifting_recipe_2)</span>
def main [
<span class="Constant">10</span>:point<span class="Special"> <- </span>merge <span class="Constant">14</span><span class="Delimiter">,</span> <span class="Constant">15</span>
<span class="Constant">11</span>:point<span class="Special"> <- </span>foo <span class="Constant">10</span>:point
]
<span class="Comment"># non-matching shape-shifting variant</span>
def foo a:_t<span class="Delimiter">,</span> b:_t <span class="Delimiter">-></span> result:number [
local-scope
load-ingredients
result<span class="Special"> <- </span>copy <span class="Constant">34</span>
]
<span class="Comment"># matching shape-shifting variant</span>
def foo a:_t <span class="Delimiter">-></span> result:_t [
local-scope
load-ingredients
result<span class="Special"> <- </span>copy a
]
<span class="traceContains">+mem: storing 14 in location 11</span>
<span class="traceContains">+mem: storing 15 in location 12</span>
<span class="Delimiter">:(scenario shape_shifting_recipe_nonroot)</span>
def main [
<span class="Constant">10</span>:foo:point<span class="Special"> <- </span>merge <span class="Constant">14</span><span class="Delimiter">,</span> <span class="Constant">15</span><span class="Delimiter">,</span> <span class="Constant">16</span>
<span class="Constant">20</span>:point/<span class="Special">raw <- </span>bar <span class="Constant">10</span>:foo:point
]
<span class="Comment"># shape-shifting recipe with type ingredient following some other type</span>
def bar a:foo:_t <span class="Delimiter">-></span> result:_t [
local-scope
load-ingredients
result<span class="Special"> <- </span>get a<span class="Delimiter">,</span> x:offset
]
container foo:_t [
x:_t
y:number
]
<span class="traceContains">+mem: storing 14 in location 20</span>
<span class="traceContains">+mem: storing 15 in location 21</span>
<span class="Delimiter">:(scenario shape_shifting_recipe_nested)</span>
container c:_a:_b [
a:_a
b:_b
]
def main [
s:address:shared:array:character<span class="Special"> <- </span><span class="Normal">new</span> [abc]
<span class="Delimiter">{</span>x: <span class="Delimiter">(</span>c <span class="Delimiter">(</span>address shared array character<span class="Delimiter">)</span> number<span class="Delimiter">)}</span><span class="Special"> <- </span>merge s<span class="Delimiter">,</span> <span class="Constant">34</span>
foo x
]
def foo x:c:_bar:_baz [
local-scope
load-ingredients
]
<span class="Delimiter">:(scenario shape_shifting_recipe_type_deduction_ignores_offsets)</span>
def main [
<span class="Constant">10</span>:foo:point<span class="Special"> <- </span>merge <span class="Constant">14</span><span class="Delimiter">,</span> <span class="Constant">15</span><span class="Delimiter">,</span> <span class="Constant">16</span>
<span class="Constant">20</span>:point/<span class="Special">raw <- </span>bar <span class="Constant">10</span>:foo:point
]
def bar a:foo:_t <span class="Delimiter">-></span> result:_t [
local-scope
load-ingredients
x:number<span class="Special"> <- </span>copy <span class="Constant">1</span>
result<span class="Special"> <- </span>get a<span class="Delimiter">,</span> x:offset <span class="Comment"># shouldn't collide with other variable</span>
]
container foo:_t [
x:_t
y:number
]
<span class="traceContains">+mem: storing 14 in location 20</span>
<span class="traceContains">+mem: storing 15 in location 21</span>
<span class="Delimiter">:(scenario shape_shifting_recipe_empty)</span>
def main [
foo <span class="Constant">1</span>
]
<span class="Comment"># shape-shifting recipe with no body</span>
def foo a:_t [
]
<span class="Comment"># shouldn't crash</span>
<span class="Delimiter">:(scenario shape_shifting_recipe_handles_shape_shifting_new_ingredient)</span>
def main [
<span class="Constant">1</span>:address:shared:foo:point<span class="Special"> <- </span>bar <span class="Constant">3</span>
<span class="Constant">11</span>:foo:point<span class="Special"> <- </span>copy *<span class="Constant">1</span>:address:shared:foo:point
]
container foo:_t [
x:_t
y:number
]
def bar x:number <span class="Delimiter">-></span> result:address:shared:foo:_t [
local-scope
load-ingredients
<span class="Comment"># new refers to _t in its ingredient *value*</span>
result<span class="Special"> <- </span><span class="Normal">new</span> <span class="Delimiter">{(</span>foo _t<span class="Delimiter">)</span> : type<span class="Delimiter">}</span>
]
<span class="traceContains">+mem: storing 0 in location 11</span>
<span class="traceContains">+mem: storing 0 in location 12</span>
<span class="traceContains">+mem: storing 0 in location 13</span>
<span class="Delimiter">:(scenario shape_shifting_recipe_handles_shape_shifting_new_ingredient_2)</span>
def main [
<span class="Constant">1</span>:address:shared:foo:point<span class="Special"> <- </span>bar <span class="Constant">3</span>
<span class="Constant">11</span>:foo:point<span class="Special"> <- </span>copy *<span class="Constant">1</span>:address:shared:foo:point
]
def bar x:number <span class="Delimiter">-></span> result:address:shared:foo:_t [
local-scope
load-ingredients
<span class="Comment"># new refers to _t in its ingredient *value*</span>
result<span class="Special"> <- </span><span class="Normal">new</span> <span class="Delimiter">{(</span>foo _t<span class="Delimiter">)</span> : type<span class="Delimiter">}</span>
]
<span class="Comment"># container defined after use</span>
container foo:_t [
x:_t
y:number
]
<span class="traceContains">+mem: storing 0 in location 11</span>
<span class="traceContains">+mem: storing 0 in location 12</span>
<span class="traceContains">+mem: storing 0 in location 13</span>
<span class="Delimiter">:(scenario shape_shifting_recipe_supports_compound_types)</span>
def main [
<span class="Constant">1</span>:address:shared:point<span class="Special"> <- </span><span class="Normal">new</span> point:type
<span class="Constant">2</span>:address:number<span class="Special"> <- </span>get-address *<span class="Constant">1</span>:address:shared:point<span class="Delimiter">,</span> y:offset
*<span class="Constant">2</span>:address:number<span class="Special"> <- </span>copy <span class="Constant">34</span>
<span class="Constant">3</span>:address:shared:point<span class="Special"> <- </span>bar <span class="Constant">1</span>:address:shared:point <span class="Comment"># specialize _t to address:shared:point</span>
<span class="Constant">4</span>:point<span class="Special"> <- </span>copy *<span class="Constant">3</span>:address:shared:point
]
def bar a:_t <span class="Delimiter">-></span> result:_t [
local-scope
load-ingredients
result<span class="Special"> <- </span>copy a
]
<span class="traceContains">+mem: storing 34 in location 5</span>
<span class="Delimiter">:(scenario shape_shifting_recipe_error)</span>
<span class="Special">% Hide_errors = true;</span>
def main [
a:number<span class="Special"> <- </span>copy <span class="Constant">3</span>
b:address:shared:number<span class="Special"> <- </span>foo a
]
def foo a:_t <span class="Delimiter">-></span> b:_t [
load-ingredients
b<span class="Special"> <- </span>copy a
]
<span class="traceContains">+error: main: no call found for 'b:address:shared:number <- foo a'</span>
<span class="Delimiter">:(scenario specialize_inside_recipe_without_header)</span>
def main [
foo <span class="Constant">3</span>
]
def foo [
local-scope
x:number<span class="Special"> <- </span>next-ingredient <span class="Comment"># ensure no header</span>
<span class="Constant">1</span>:number/<span class="Special">raw <- </span>bar x <span class="Comment"># call a shape-shifting recipe</span>
]
def bar x:_elem <span class="Delimiter">-></span> y:_elem [
local-scope
load-ingredients
y<span class="Special"> <- </span>add x<span class="Delimiter">,</span> <span class="Constant">1</span>
]
<span class="traceContains">+mem: storing 4 in location 1</span>
<span class="Delimiter">:(scenario specialize_with_literal)</span>
def main [
local-scope
<span class="Comment"># permit literal to map to number</span>
<span class="Constant">1</span>:number/<span class="Special">raw <- </span>foo <span class="Constant">3</span>
]
def foo x:_elem <span class="Delimiter">-></span> y:_elem [
local-scope
load-ingredients
y<span class="Special"> <- </span>add x<span class="Delimiter">,</span> <span class="Constant">1</span>
]
<span class="traceContains">+mem: storing 4 in location 1</span>
<span class="Delimiter">:(scenario specialize_with_literal_2)</span>
def main [
local-scope
<span class="Comment"># permit literal to map to character</span>
<span class="Constant">1</span>:character/<span class="Special">raw <- </span>foo <span class="Constant">3</span>
]
def foo x:_elem <span class="Delimiter">-></span> y:_elem [
local-scope
load-ingredients
y<span class="Special"> <- </span>add x<span class="Delimiter">,</span> <span class="Constant">1</span>
]
<span class="traceContains">+mem: storing 4 in location 1</span>
<span class="Delimiter">:(scenario specialize_with_literal_3)</span>
def main [
local-scope
<span class="Comment"># permit '0' to map to address to shape-shifting type-ingredient</span>
<span class="Constant">1</span>:address:shared:character/<span class="Special">raw <- </span>foo <span class="Constant">0</span>
]
def foo x:address:_elem <span class="Delimiter">-></span> y:address:_elem [
local-scope
load-ingredients
y<span class="Special"> <- </span>copy x
]
<span class="traceContains">+mem: storing 0 in location 1</span>
$error: <span class="Constant">0</span>
<span class="Delimiter">:(scenario specialize_with_literal_4)</span>
<span class="Special">% Hide_errors = true;</span>
def main [
local-scope
<span class="Comment"># ambiguous call: what's the type of its ingredient?!</span>
foo <span class="Constant">0</span>
]
def foo x:address:_elem <span class="Delimiter">-></span> y:address:_elem [
local-scope
load-ingredients
y<span class="Special"> <- </span>copy x
]
<span class="traceContains">+error: foo: failed to map a type to x</span>
<span class="traceContains">+error: foo: failed to map a type to y</span>
<span class="Delimiter">:(scenario specialize_with_literal_5)</span>
def main [
foo <span class="Constant">3</span><span class="Delimiter">,</span> <span class="Constant">4</span> <span class="Comment"># recipe mapping two variables to literals</span>
]
def foo x:_elem<span class="Delimiter">,</span> y:_elem [
local-scope
load-ingredients
<span class="Constant">1</span>:number/<span class="Special">raw <- </span>add x<span class="Delimiter">,</span> y
]
<span class="traceContains">+mem: storing 7 in location 1</span>
<span class="Delimiter">:(scenario multiple_shape_shifting_variants)</span>
<span class="Comment"># try to call two different shape-shifting recipes with the same name</span>
def main [
e1:d1:number<span class="Special"> <- </span>merge <span class="Constant">3</span>
e2:d2:number<span class="Special"> <- </span>merge <span class="Constant">4</span><span class="Delimiter">,</span> <span class="Constant">5</span>
<span class="Constant">1</span>:number/<span class="Special">raw <- </span>foo e1
<span class="Constant">2</span>:number/<span class="Special">raw <- </span>foo e2
]
<span class="Comment"># the two shape-shifting definitions</span>
def foo a:d1:_elem <span class="Delimiter">-></span> b:number [
local-scope
load-ingredients
<span class="Identifier">return</span> <span class="Constant">34</span>
]
def foo a:d2:_elem <span class="Delimiter">-></span> b:number [
local-scope
load-ingredients
<span class="Identifier">return</span> <span class="Constant">35</span>
]
<span class="Comment"># the shape-shifting containers they use</span>
container d1:_elem [
x:_elem
]
container d2:_elem [
x:number
y:_elem
]
<span class="traceContains">+mem: storing 34 in location 1</span>
<span class="traceContains">+mem: storing 35 in location 2</span>
<span class="Delimiter">:(scenario multiple_shape_shifting_variants_2)</span>
<span class="Comment"># static dispatch between shape-shifting variants, _including pointer lookups_</span>
def main [
e1:d1:number<span class="Special"> <- </span>merge <span class="Constant">3</span>
e2:address:shared:d2:number<span class="Special"> <- </span><span class="Normal">new</span> <span class="Delimiter">{(</span>d2 number<span class="Delimiter">)</span>: type<span class="Delimiter">}</span>
<span class="Constant">1</span>:number/<span class="Special">raw <- </span>foo e1
<span class="Constant">2</span>:number/<span class="Special">raw <- </span>foo *e2 <span class="Comment"># different from previous scenario</span>
]
def foo a:d1:_elem <span class="Delimiter">-></span> b:number [
local-scope
load-ingredients
<span class="Identifier">return</span> <span class="Constant">34</span>
]
def foo a:d2:_elem <span class="Delimiter">-></span> b:number [
local-scope
load-ingredients
<span class="Identifier">return</span> <span class="Constant">35</span>
]
container d1:_elem [
x:_elem
]
container d2:_elem [
x:number
y:_elem
]
<span class="traceContains">+mem: storing 34 in location 1</span>
<span class="traceContains">+mem: storing 35 in location 2</span>
<span class="Delimiter">:(scenario missing_type_in_shape_shifting_recipe)</span>
<span class="Special">% Hide_errors = true;</span>
def main [
a:d1:number<span class="Special"> <- </span>merge <span class="Constant">3</span>
foo a
]
def foo a:d1:_elem <span class="Delimiter">-></span> b:number [
local-scope
load-ingredients
copy e <span class="Comment"># no such variable</span>
<span class="Identifier">return</span> <span class="Constant">34</span>
]
container d1:_elem [
x:_elem
]
<span class="traceContains">+error: foo: unknown type for e (check the name for typos)</span>
<span class="traceContains">+error: specializing foo: missing type for e</span>
<span class="Comment"># and it doesn't crash</span>
<span class="Delimiter">:(scenario missing_type_in_shape_shifting_recipe_2)</span>
<span class="Special">% Hide_errors = true;</span>
def main [
a:d1:number<span class="Special"> <- </span>merge <span class="Constant">3</span>
foo a
]
def foo a:d1:_elem <span class="Delimiter">-></span> b:number [
local-scope
load-ingredients
get e<span class="Delimiter">,</span> x:offset <span class="Comment"># unknown variable in a 'get', which does some extra checking</span>
<span class="Identifier">return</span> <span class="Constant">34</span>
]
container d1:_elem [
x:_elem
]
<span class="traceContains">+error: foo: unknown type for e (check the name for typos)</span>
<span class="traceContains">+error: specializing foo: missing type for e</span>
<span class="Comment"># and it doesn't crash</span>
<span class="Delimiter">:(scenarios transform)</span>
<span class="Delimiter">:(scenario specialize_recursive_shape_shifting_recipe)</span>
def main [
<span class="Constant">1</span>:number<span class="Special"> <- </span>copy <span class="Constant">34</span>
<span class="Constant">2</span>:number<span class="Special"> <- </span>foo <span class="Constant">1</span>:number
]
def foo x:_elem <span class="Delimiter">-></span> y:number [
local-scope
load-ingredients
<span class="Delimiter">{</span>
<span class="Identifier">break</span>
y:number<span class="Special"> <- </span>foo x
<span class="Delimiter">}</span>
<span class="Identifier">return</span> y
]
<span class="traceContains">+transform: new specialization: foo_2</span>
<span class="Comment"># transform terminates</span>
<span class="Delimiter">:(scenarios run)</span>
<span class="Delimiter">:(scenario specialize_most_similar_variant)</span>
def main [
<span class="Constant">1</span>:address:shared:number<span class="Special"> <- </span><span class="Normal">new</span> number:type
<span class="Constant">2</span>:number<span class="Special"> <- </span>foo <span class="Constant">1</span>:address:shared:number
]
def foo x:_elem <span class="Delimiter">-></span> y:number [
local-scope
load-ingredients
<span class="Identifier">return</span> <span class="Constant">34</span>
]
def foo x:address:shared:_elem <span class="Delimiter">-></span> y:number [
local-scope
load-ingredients
<span class="Identifier">return</span> <span class="Constant">35</span>
]
<span class="traceContains">+mem: storing 35 in location 2</span>
<span class="Delimiter">:(scenario specialize_most_similar_variant_2)</span>
<span class="Comment"># version with headers padded with lots of unrelated concrete types</span>
def main [
<span class="Constant">1</span>:number<span class="Special"> <- </span>copy <span class="Constant">23</span>
<span class="Constant">2</span>:address:shared:array:number<span class="Special"> <- </span>copy <span class="Constant">0</span>
<span class="Constant">3</span>:number<span class="Special"> <- </span>foo <span class="Constant">2</span>:address:shared:array:number<span class="Delimiter">,</span> <span class="Constant">1</span>:number
]
<span class="Comment"># variant with concrete type</span>
def foo dummy:address:shared:array:number<span class="Delimiter">,</span> x:number <span class="Delimiter">-></span> y:number<span class="Delimiter">,</span> dummy:address:shared:array:number [
local-scope
load-ingredients
<span class="Identifier">return</span> <span class="Constant">34</span>
]
<span class="Comment"># shape-shifting variant</span>
def foo dummy:address:shared:array:number<span class="Delimiter">,</span> x:_elem <span class="Delimiter">-></span> y:number<span class="Delimiter">,</span> dummy:address:shared:array:number [
local-scope
load-ingredients
<span class="Identifier">return</span> <span class="Constant">35</span>
]
<span class="Comment"># prefer the concrete variant</span>
<span class="traceContains">+mem: storing 34 in location 3</span>
<span class="Delimiter">:(scenario specialize_most_similar_variant_3)</span>
def main [
<span class="Constant">1</span>:address:shared:array:character<span class="Special"> <- </span><span class="Normal">new</span> [abc]
foo <span class="Constant">1</span>:address:shared:array:character
]
def foo x:address:shared:array:character [
<span class="Constant">2</span>:number<span class="Special"> <- </span>copy <span class="Constant">34</span>
]
def foo x:address:_elem [
<span class="Constant">2</span>:number<span class="Special"> <- </span>copy <span class="Constant">35</span>
]
<span class="Comment"># make sure the more precise version was used</span>
<span class="traceContains">+mem: storing 34 in location 2</span>
<span class="Delimiter">:(scenario specialize_literal_as_number)</span>
def main [
<span class="Constant">1</span>:number<span class="Special"> <- </span>foo <span class="Constant">23</span>
]
def foo x:_elem <span class="Delimiter">-></span> y:number [
local-scope
load-ingredients
<span class="Identifier">return</span> <span class="Constant">34</span>
]
def foo x:character <span class="Delimiter">-></span> y:number [
local-scope
load-ingredients
<span class="Identifier">return</span> <span class="Constant">35</span>
]
<span class="traceContains">+mem: storing 34 in location 1</span>
<span class="Delimiter">:(scenario specialize_literal_as_number_2)</span>
<span class="Comment"># version calling with literal</span>
def main [
<span class="Constant">1</span>:number<span class="Special"> <- </span>foo <span class="Constant">0</span>
]
<span class="Comment"># variant with concrete type</span>
def foo x:number <span class="Delimiter">-></span> y:number [
local-scope
load-ingredients
<span class="Identifier">return</span> <span class="Constant">34</span>
]
<span class="Comment"># shape-shifting variant</span>
def foo x:address:shared:_elem <span class="Delimiter">-></span> y:number [
local-scope
load-ingredients
<span class="Identifier">return</span> <span class="Constant">35</span>
]
<span class="Comment"># prefer the concrete variant, ignore concrete types in scoring the shape-shifting variant</span>
<span class="traceContains">+mem: storing 34 in location 1</span>
</pre>
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