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<span class="Comment">//: A big convenience high-level languages provide is the ability to name memory</span>
<span class="Comment">//: locations. In Mu, a transform called 'transform_names' provides this</span>
<span class="Comment">//: convenience.</span>
<span class="Delimiter">:(scenario transform_names)</span>
<span class="muRecipe">def</span> main [
<span class="Normal">x</span>:num<span class="Special"> <- </span>copy <span class="Constant">0</span>
]
<span class="traceContains">+name: assign x 1</span>
<span class="traceContains">+mem: storing 0 in location 1</span>
<span class="Delimiter">:(scenarios transform)</span>
<span class="Delimiter">:(scenario transform_names_fails_on_use_before_define)</span>
<span class="Special">% Hide_errors = true;</span>
<span class="muRecipe">def</span> main [
<span class="Normal">x</span>:num<span class="Special"> <- </span>copy y:num
]
<span class="traceContains">+error: main: tried to read ingredient 'y' in 'x:num <- copy y:num' but it hasn't been written to yet</span>
<span class="Comment"># todo: detect conditional defines</span>
<span class="Delimiter">:(after "Transform.push_back(compute_container_sizes)")</span>
Transform<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>transform_names<span class="Delimiter">);</span> <span class="Comment">// idempotent</span>
<span class="Delimiter">:(before "End Globals")</span>
map<recipe_ordinal<span class="Delimiter">,</span> map<string<span class="Delimiter">,</span> <span class="Normal">int</span>> > Name<span class="Delimiter">;</span>
<span class="Comment">//: the Name map is a global, so save it before tests and reset it for every</span>
<span class="Comment">//: test, just to be safe.</span>
<span class="Delimiter">:(before "End Globals")</span>
map<recipe_ordinal<span class="Delimiter">,</span> map<string<span class="Delimiter">,</span> <span class="Normal">int</span>> > Name_snapshot<span class="Delimiter">;</span>
<span class="Delimiter">:(before "End save_snapshots")</span>
Name_snapshot = Name<span class="Delimiter">;</span>
<span class="Delimiter">:(before "End restore_snapshots")</span>
Name = Name_snapshot<span class="Delimiter">;</span>
<span class="Delimiter">:(code)</span>
<span class="Normal">void</span> transform_names<span class="Delimiter">(</span><span class="Normal">const</span> recipe_ordinal r<span class="Delimiter">)</span> <span class="Delimiter">{</span>
recipe& caller = get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">);</span>
trace<span class="Delimiter">(</span><span class="Constant">9991</span><span class="Delimiter">,</span> <span class="Constant">"transform"</span><span class="Delimiter">)</span> << <span class="Constant">"--- transform names for recipe "</span> << caller<span class="Delimiter">.</span>name << end<span class="Delimiter">();</span>
<span class="Normal">bool</span> names_used = <span class="Constant">false</span><span class="Delimiter">;</span>
<span class="Normal">bool</span> numeric_locations_used = <span class="Constant">false</span><span class="Delimiter">;</span>
map<string<span class="Delimiter">,</span> <span class="Normal">int</span>>& names = Name[r]<span class="Delimiter">;</span>
<span class="Comment">// store the indices 'used' so far in the map</span>
<span class="Normal">int</span>& curr_idx = names[<span class="Constant">""</span>]<span class="Delimiter">;</span>
++curr_idx<span class="Delimiter">;</span> <span class="Comment">// avoid using index 0, benign skip in some other cases</span>
<span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < SIZE<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>steps<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
instruction& inst = caller<span class="Delimiter">.</span>steps<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">);</span>
<span class="Comment">// End transform_names(inst) Special-cases</span>
<span class="Comment">// map names to addresses</span>
<span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> in = <span class="Constant">0</span><span class="Delimiter">;</span> in < SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">);</span> ++in<span class="Delimiter">)</span> <span class="Delimiter">{</span>
reagent& ingredient = inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>in<span class="Delimiter">);</span>
<span class="Comment">// Begin transform_names Ingredient Special-cases(ingredient, inst, caller)</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>is_disqualified<span class="Delimiter">(</span>ingredient<span class="Delimiter">,</span> inst<span class="Delimiter">,</span> caller<span class="Delimiter">.</span>name<span class="Delimiter">))</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>is_numeric_location<span class="Delimiter">(</span>ingredient<span class="Delimiter">))</span> numeric_locations_used = <span class="Constant">true</span><span class="Delimiter">;</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>is_named_location<span class="Delimiter">(</span>ingredient<span class="Delimiter">))</span> names_used = <span class="Constant">true</span><span class="Delimiter">;</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>is_integer<span class="Delimiter">(</span>ingredient<span class="Delimiter">.</span>name<span class="Delimiter">))</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!already_transformed<span class="Delimiter">(</span>ingredient<span class="Delimiter">,</span> names<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">"tried to read ingredient '"</span> << ingredient<span class="Delimiter">.</span>name << <span class="Constant">"' in '"</span> << to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> << <span class="Constant">"' but it hasn't been written to yet</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span>
<span class="Comment">// use-before-set Error</span>
<span class="Identifier">return</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Normal">int</span> v = lookup_name<span class="Delimiter">(</span>ingredient<span class="Delimiter">,</span> r<span class="Delimiter">);</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>v >= <span class="Constant">0</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
ingredient<span class="Delimiter">.</span>set_value<span class="Delimiter">(</span>v<span class="Delimiter">);</span>
<span class="Comment">// Done Placing Ingredient(ingredient, inst, caller)</span>
<span class="Delimiter">}</span>
<span class="Normal">else</span> <span class="Delimiter">{</span>
raise << maybe<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>name<span class="Delimiter">)</span> << <span class="Constant">"can't find a place to store '"</span> << ingredient<span class="Delimiter">.</span>name << <span class="Constant">"'</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span>
<span class="Identifier">return</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Delimiter">}</span>
<span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> out = <span class="Constant">0</span><span class="Delimiter">;</span> out < SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">);</span> ++out<span class="Delimiter">)</span> <span class="Delimiter">{</span>
reagent& product = inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>out<span class="Delimiter">);</span>
<span class="Comment">// Begin transform_names Product Special-cases(product, inst, caller)</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>is_disqualified<span class="Delimiter">(</span>product<span class="Delimiter">,</span> inst<span class="Delimiter">,</span> caller<span class="Delimiter">.</span>name<span class="Delimiter">))</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>is_numeric_location<span class="Delimiter">(</span>product<span class="Delimiter">))</span> numeric_locations_used = <span class="Constant">true</span><span class="Delimiter">;</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>is_named_location<span class="Delimiter">(</span>product<span class="Delimiter">))</span> names_used = <span class="Constant">true</span><span class="Delimiter">;</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>is_integer<span class="Delimiter">(</span>product<span class="Delimiter">.</span>name<span class="Delimiter">))</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>names<span class="Delimiter">.</span>find<span class="Delimiter">(</span>product<span class="Delimiter">.</span>name<span class="Delimiter">)</span> == names<span class="Delimiter">.</span>end<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">"name"</span><span class="Delimiter">)</span> << <span class="Constant">"assign "</span> << product<span class="Delimiter">.</span>name << <span class="Constant">" "</span> << curr_idx << end<span class="Delimiter">();</span>
names[product<span class="Delimiter">.</span>name] = curr_idx<span class="Delimiter">;</span>
curr_idx += size_of<span class="Delimiter">(</span>product<span class="Delimiter">);</span>
<span class="Delimiter">}</span>
<span class="Normal">int</span> v = lookup_name<span class="Delimiter">(</span>product<span class="Delimiter">,</span> r<span class="Delimiter">);</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>v >= <span class="Constant">0</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
product<span class="Delimiter">.</span>set_value<span class="Delimiter">(</span>v<span class="Delimiter">);</span>
<span class="Comment">// Done Placing Product(product, inst, caller)</span>
<span class="Delimiter">}</span>
<span class="Normal">else</span> <span class="Delimiter">{</span>
raise << maybe<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>name<span class="Delimiter">)</span> << <span class="Constant">"can't find a place to store '"</span> << product<span class="Delimiter">.</span>name << <span class="Constant">"'</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span>
<span class="Identifier">return</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Delimiter">}</span>
<span class="Delimiter">}</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>names_used && numeric_locations_used<span class="Delimiter">)</span>
raise << maybe<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>name<span class="Delimiter">)</span> << <span class="Constant">"mixing variable names and numeric addresses</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span>
<span class="Delimiter">}</span>
<span class="Normal">bool</span> is_disqualified<span class="Delimiter">(</span><span class="Comment">/*</span><span class="Comment">mutable</span><span class="Comment">*/</span> reagent& x<span class="Delimiter">,</span> <span class="Normal">const</span> instruction& inst<span class="Delimiter">,</span> <span class="Normal">const</span> string& recipe_name<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>recipe_name<span class="Delimiter">)</span> << <span class="Constant">"missing type for '"</span> << x<span class="Delimiter">.</span>original_string << <span class="Constant">"' in '"</span> << inst<span class="Delimiter">.</span>original_string << <span class="Constant">"'</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span>
<span class="Comment">// missing-type Error 1</span>
<span class="Identifier">return</span> <span class="Constant">true</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>is_raw<span class="Delimiter">(</span>x<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>is_literal<span class="Delimiter">(</span>x<span class="Delimiter">))</span> <span class="Identifier">return</span> <span class="Constant">true</span><span class="Delimiter">;</span>
<span class="Comment">// End is_disqualified Cases</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>x<span class="Delimiter">.</span>initialized<span class="Delimiter">)</span> <span class="Identifier">return</span> <span class="Constant">true</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> already_transformed<span class="Delimiter">(</span><span class="Normal">const</span> reagent& r<span class="Delimiter">,</span> <span class="Normal">const</span> map<string<span class="Delimiter">,</span> <span class="Normal">int</span>>& names<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Identifier">return</span> contains_key<span class="Delimiter">(</span>names<span class="Delimiter">,</span> r<span class="Delimiter">.</span>name<span class="Delimiter">);</span>
<span class="Delimiter">}</span>
<span class="Normal">int</span> lookup_name<span class="Delimiter">(</span><span class="Normal">const</span> reagent& r<span class="Delimiter">,</span> <span class="Normal">const</span> recipe_ordinal default_recipe<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Identifier">return</span> Name[default_recipe][r<span class="Delimiter">.</span>name]<span class="Delimiter">;</span>
<span class="Delimiter">}</span>
type_ordinal skip_addresses<span class="Delimiter">(</span>type_tree* type<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Normal">while</span> <span class="Delimiter">(</span>type && is_compound_type_starting_with<span class="Delimiter">(</span>type<span class="Delimiter">,</span> <span class="Constant">"address"</span><span class="Delimiter">))</span>
type = type<span class="Delimiter">-></span>right<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">1</span><span class="Delimiter">;</span> <span class="Comment">// error handled elsewhere</span>
<span class="Identifier">return</span> root_type<span class="Delimiter">(</span>type<span class="Delimiter">)-></span>value<span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Normal">int</span> find_element_name<span class="Delimiter">(</span><span class="Normal">const</span> type_ordinal t<span class="Delimiter">,</span> <span class="Normal">const</span> string& name<span class="Delimiter">,</span> <span class="Normal">const</span> string& recipe_name<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Normal">const</span> type_info& container = get<span class="Delimiter">(</span>Type<span class="Delimiter">,</span> t<span class="Delimiter">);</span>
<span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < SIZE<span class="Delimiter">(</span>container<span class="Delimiter">.</span>elements<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>container<span class="Delimiter">.</span>elements<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">).</span>name == name<span class="Delimiter">)</span> <span class="Identifier">return</span> i<span class="Delimiter">;</span>
raise << maybe<span class="Delimiter">(</span>recipe_name<span class="Delimiter">)</span> << <span class="Constant">"unknown element '"</span> << name << <span class="Constant">"' in container '"</span> << get<span class="Delimiter">(</span>Type<span class="Delimiter">,</span> t<span class="Delimiter">).</span>name << <span class="Constant">"'</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span>
<span class="Identifier">return</span> -<span class="Constant">1</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Normal">bool</span> is_numeric_location<span class="Delimiter">(</span><span class="Normal">const</span> reagent& x<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>is_literal<span class="Delimiter">(</span>x<span class="Delimiter">))</span> <span class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>is_raw<span class="Delimiter">(</span>x<span class="Delimiter">))</span> <span class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>x<span class="Delimiter">.</span>name == <span class="Constant">"0"</span><span class="Delimiter">)</span> <span class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span> <span class="Comment">// used for chaining lexical scopes</span>
<span class="Identifier">return</span> is_integer<span class="Delimiter">(</span>x<span class="Delimiter">.</span>name<span class="Delimiter">);</span>
<span class="Delimiter">}</span>
<span class="Normal">bool</span> is_named_location<span class="Delimiter">(</span><span class="Normal">const</span> reagent& x<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>is_literal<span class="Delimiter">(</span>x<span class="Delimiter">))</span> <span class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>is_raw<span class="Delimiter">(</span>x<span class="Delimiter">))</span> <span class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>is_special_name<span class="Delimiter">(</span>x<span class="Delimiter">.</span>name<span class="Delimiter">))</span> <span class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span>
<span class="Identifier">return</span> !is_integer<span class="Delimiter">(</span>x<span class="Delimiter">.</span>name<span class="Delimiter">);</span>
<span class="Delimiter">}</span>
<span class="Comment">// all names here should either be disqualified or also in bind_special_scenario_names</span>
<span class="Normal">bool</span> is_special_name<span class="Delimiter">(</span><span class="Normal">const</span> string& s<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>s == <span class="Constant">"_"</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>s == <span class="Constant">"0"</span><span class="Delimiter">)</span> <span class="Identifier">return</span> <span class="Constant">true</span><span class="Delimiter">;</span>
<span class="Comment">// End is_special_name Cases</span>
<span class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Delimiter">:(scenario transform_names_supports_containers)</span>
<span class="muRecipe">def</span> main [
<span class="Normal">x</span>:point<span class="Special"> <- </span>merge <span class="Constant">34</span><span class="Delimiter">,</span> <span class="Constant">35</span>
<span class="Normal">y</span>:num<span class="Special"> <- </span>copy <span class="Constant">3</span>
]
<span class="traceContains">+name: assign x 1</span>
<span class="Comment"># skip location 2 because x occupies two locations</span>
<span class="traceContains">+name: assign y 3</span>
<span class="Delimiter">:(scenario transform_names_supports_static_arrays)</span>
<span class="muRecipe">def</span> main [
<span class="Normal">x</span>:@:num:<span class="Constant">3</span><span class="Special"> <- </span>create-array
<span class="Normal">y</span>:num<span class="Special"> <- </span>copy <span class="Constant">3</span>
]
<span class="traceContains">+name: assign x 1</span>
<span class="Comment"># skip locations 2, 3, 4 because x occupies four locations</span>
<span class="traceContains">+name: assign y 5</span>
<span class="Delimiter">:(scenario transform_names_passes_dummy)</span>
<span class="Comment"># _ is just a dummy result that never gets consumed</span>
<span class="muRecipe">def</span> main [
_<span class="Delimiter">,</span> x:num<span class="Special"> <- </span>copy <span class="Constant">0</span><span class="Delimiter">,</span> <span class="Constant">1</span>
]
<span class="traceContains">+name: assign x 1</span>
<span class="traceAbsent">-name: assign _ 1</span>
<span class="Comment">//: an escape hatch to suppress name conversion that we'll use later</span>
<span class="Delimiter">:(scenarios run)</span>
<span class="Delimiter">:(scenario transform_names_passes_raw)</span>
<span class="Special">% Hide_errors = true;</span>
<span class="muRecipe">def</span> main [
<span class="Normal">x</span>:num/<span class="Special">raw <- </span>copy <span class="Constant">0</span>
]
<span class="traceAbsent">-name: assign x 1</span>
<span class="traceContains">+error: can't write to location 0 in 'x:num/raw <- copy 0'</span>
<span class="Delimiter">:(scenarios transform)</span>
<span class="Delimiter">:(scenario transform_names_fails_when_mixing_names_and_numeric_locations)</span>
<span class="Special">% Hide_errors = true;</span>
<span class="muRecipe">def</span> main [
<span class="Normal">x</span>:num<span class="Special"> <- </span>copy <span class="Constant">1</span>:num
]
<span class="traceContains">+error: main: mixing variable names and numeric addresses</span>
<span class="Delimiter">:(scenario transform_names_fails_when_mixing_names_and_numeric_locations_2)</span>
<span class="Special">% Hide_errors = true;</span>
<span class="muRecipe">def</span> main [
<span class="Normal">x</span>:num<span class="Special"> <- </span>copy <span class="Constant">1</span>
<span class="Constant">1</span>:num<span class="Special"> <- </span>copy x:num
]
<span class="traceContains">+error: main: mixing variable names and numeric addresses</span>
<span class="Delimiter">:(scenario transform_names_does_not_fail_when_mixing_names_and_raw_locations)</span>
<span class="muRecipe">def</span> main [
<span class="Normal">x</span>:num<span class="Special"> <- </span>copy <span class="Constant">1</span>:num/<span class="Special">raw</span>
]
<span class="traceAbsent">-error: main: mixing variable names and numeric addresses</span>
$error: <span class="Constant">0</span>
<span class="Delimiter">:(scenario transform_names_does_not_fail_when_mixing_names_and_literals)</span>
<span class="muRecipe">def</span> main [
<span class="Normal">x</span>:num<span class="Special"> <- </span>copy <span class="Constant">1</span>
]
<span class="traceAbsent">-error: main: mixing variable names and numeric addresses</span>
$error: <span class="Constant">0</span>
<span class="SalientComment">//:: Support element names for containers in 'get' and 'get-location' and 'put'.</span>
<span class="Comment">//: (get-location is implemented later)</span>
<span class="Delimiter">:(scenario transform_names_transforms_container_elements)</span>
<span class="muRecipe">def</span> main [
<span class="Normal">p</span>:&:point<span class="Special"> <- </span>copy <span class="Constant">0</span>
<span class="Normal">a</span>:num<span class="Special"> <- </span>get *p:&:point<span class="Delimiter">,</span> <span class="Constant">y:offset</span>
<span class="Normal">b</span>:num<span class="Special"> <- </span>get *p:&:point<span class="Delimiter">,</span> <span class="Constant">x:offset</span>
]
<span class="traceContains">+name: element y of type point is at offset 1</span>
<span class="traceContains">+name: element x of type point is at offset 0</span>
<span class="Delimiter">:(before "End transform_names(inst) Special-cases")</span>
<span class="Comment">// replace element names of containers with offsets</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>inst<span class="Delimiter">.</span>name == <span class="Constant">"get"</span> || inst<span class="Delimiter">.</span>name == <span class="Constant">"get-location"</span> || inst<span class="Delimiter">.</span>name == <span class="Constant">"put"</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Comment">//: avoid raising any errors here; later layers will support overloading new</span>
<span class="Comment">//: instructions with the same names (static dispatch), which could lead to</span>
<span class="Comment">//: spurious errors</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> < <span class="Constant">2</span><span class="Delimiter">)</span>
<span class="Identifier">break</span><span class="Delimiter">;</span> <span class="Comment">// error raised elsewhere</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!is_literal<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">)))</span>
<span class="Identifier">break</span><span class="Delimiter">;</span> <span class="Comment">// error raised elsewhere</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">).</span>name<span class="Delimiter">.</span>find_first_not_of<span class="Delimiter">(</span><span class="Constant">"0123456789"</span><span class="Delimiter">)</span> != string::npos<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Comment">// since first non-address in base type must be a container, we don't have to canonize</span>
type_ordinal base_type = skip_addresses<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>type<span class="Delimiter">);</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>base_type == -<span class="Constant">1</span><span class="Delimiter">)</span>
<span class="Identifier">break</span><span class="Delimiter">;</span> <span class="Comment">// error raised elsewhere</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>contains_key<span class="Delimiter">(</span>Type<span class="Delimiter">,</span> base_type<span class="Delimiter">))</span> <span class="Delimiter">{</span> <span class="Comment">// otherwise we'll raise an error elsewhere</span>
inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">).</span>set_value<span class="Delimiter">(</span>find_element_name<span class="Delimiter">(</span>base_type<span class="Delimiter">,</span> inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">).</span>name<span class="Delimiter">,</span> get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<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">"name"</span><span class="Delimiter">)</span> << <span class="Constant">"element "</span> << inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">).</span>name << <span class="Constant">" of type "</span> << get<span class="Delimiter">(</span>Type<span class="Delimiter">,</span> base_type<span class="Delimiter">).</span>name << <span class="Constant">" is at offset "</span> << no_scientific<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">).</span>value<span class="Delimiter">)</span> << end<span class="Delimiter">();</span>
<span class="Delimiter">}</span>
<span class="Delimiter">}</span>
<span class="Delimiter">}</span>
<span class="Comment">//: this test is actually illegal so can't call run</span>
<span class="Delimiter">:(scenarios transform)</span>
<span class="Delimiter">:(scenario transform_names_handles_containers)</span>
<span class="muRecipe">def</span> main [
<span class="Normal">a</span>:point<span class="Special"> <- </span>copy <span class="Constant">0</span>/unsafe
<span class="Normal">b</span>:num<span class="Special"> <- </span>copy <span class="Constant">0</span>/unsafe
]
<span class="traceContains">+name: assign a 1</span>
<span class="traceContains">+name: assign b 3</span>
<span class="SalientComment">//:: Support variant names for exclusive containers in 'maybe-convert'.</span>
<span class="Delimiter">:(scenarios run)</span>
<span class="Delimiter">:(scenario transform_names_handles_exclusive_containers)</span>
<span class="muRecipe">def</span> main [
<span class="Constant">12</span>:num<span class="Special"> <- </span>copy <span class="Constant">1</span>
<span class="Constant">13</span>:num<span class="Special"> <- </span>copy <span class="Constant">35</span>
<span class="Constant">14</span>:num<span class="Special"> <- </span>copy <span class="Constant">36</span>
<span class="Constant">20</span>:point<span class="Delimiter">,</span> <span class="Constant">22</span>:<span class="Normal">bool</span><span class="Special"> <- </span>maybe-convert <span class="Constant">12</span>:number-<span class="Normal">or</span>-point/unsafe<span class="Delimiter">,</span> <span class="Constant">p:variant</span>
]
<span class="traceContains">+name: variant p of type number-or-point has tag 1</span>
<span class="traceContains">+mem: storing 1 in location 22</span>
<span class="traceContains">+mem: storing 35 in location 20</span>
<span class="traceContains">+mem: storing 36 in location 21</span>
<span class="Delimiter">:(before "End transform_names(inst) Special-cases")</span>
<span class="Comment">// convert variant names of exclusive containers</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>inst<span class="Delimiter">.</span>name == <span class="Constant">"maybe-convert"</span><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> != <span class="Constant">2</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
raise << maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> << <span class="Constant">"exactly 2 ingredients expected in '"</span> << inst<span class="Delimiter">.</span>original_string << <span class="Constant">"'</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span>
<span class="Identifier">break</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
assert<span class="Delimiter">(</span>is_literal<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">)));</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">).</span>name<span class="Delimiter">.</span>find_first_not_of<span class="Delimiter">(</span><span class="Constant">"0123456789"</span><span class="Delimiter">)</span> != string::npos<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Comment">// since first non-address in base type must be an exclusive container, we don't have to canonize</span>
type_ordinal base_type = skip_addresses<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>type<span class="Delimiter">);</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>base_type == -<span class="Constant">1</span><span class="Delimiter">)</span>
raise << maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> << <span class="Constant">"expected an exclusive-container in '"</span> << inst<span class="Delimiter">.</span>original_string << <span class="Constant">"'</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>contains_key<span class="Delimiter">(</span>Type<span class="Delimiter">,</span> base_type<span class="Delimiter">))</span> <span class="Delimiter">{</span> <span class="Comment">// otherwise we'll raise an error elsewhere</span>
inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">).</span>set_value<span class="Delimiter">(</span>find_element_name<span class="Delimiter">(</span>base_type<span class="Delimiter">,</span> inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">).</span>name<span class="Delimiter">,</span> get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<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">"name"</span><span class="Delimiter">)</span> << <span class="Constant">"variant "</span> << inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">).</span>name << <span class="Constant">" of type "</span> << get<span class="Delimiter">(</span>Type<span class="Delimiter">,</span> base_type<span class="Delimiter">).</span>name << <span class="Constant">" has tag "</span> << no_scientific<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">).</span>value<span class="Delimiter">)</span> << end<span class="Delimiter">();</span>
<span class="Delimiter">}</span>
<span class="Delimiter">}</span>
<span class="Delimiter">}</span>
</pre>
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