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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 convert_names)</span>
recipe main [
x:number<span class="Special"> <- </span>copy <span class="Constant">0</span>:literal
]
<span class="traceContains">+name: assign x 1</span>
<span class="traceContains">+mem: storing 0 in location 1</span>
<span class="Delimiter">:(scenario convert_names_warns)</span>
<span class="Special">% Hide_warnings = true;</span>
recipe main [
x:number<span class="Special"> <- </span>copy y:number
]
<span class="traceContains">+warn: use before set: y in main</span>
<span class="Delimiter">:(after "int main")</span>
Transform<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>transform_names<span class="Delimiter">);</span>
<span class="Delimiter">:(before "End Globals")</span>
map<recipe_number<span class="Delimiter">,</span> map<string<span class="Delimiter">,</span> long long int> > Name<span class="Delimiter">;</span>
<span class="Delimiter">:(after "Clear Other State For recently_added_recipes")</span>
for <span class="Delimiter">(</span>long long int i = <span class="Constant">0</span><span class="Delimiter">;</span> i < SIZE<span class="Delimiter">(</span>recently_added_recipes<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
Name<span class="Delimiter">.</span>erase<span class="Delimiter">(</span>recently_added_recipes<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">));</span>
<span class="Delimiter">}</span>
<span class="Delimiter">:(code)</span>
void transform_names<span class="Delimiter">(</span>const recipe_number r<span class="Delimiter">)</span> <span class="Delimiter">{</span>
bool names_used = <span class="Constant">false</span><span class="Delimiter">;</span>
bool numeric_locations_used = <span class="Constant">false</span><span class="Delimiter">;</span>
map<string<span class="Delimiter">,</span> long long int>& names = Name[r]<span class="Delimiter">;</span>
map<string<span class="Delimiter">,</span> vector<type_number> > metadata<span class="Delimiter">;</span>
<span class="Comment">// store the indices 'used' so far in the map</span>
long long int& 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>
for <span class="Delimiter">(</span>long long int i = <span class="Constant">0</span><span class="Delimiter">;</span> i < SIZE<span class="Delimiter">(</span>Recipe[r]<span class="Delimiter">.</span>steps<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
instruction& inst = Recipe[r]<span class="Delimiter">.</span>steps<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">);</span>
<span class="Comment">// Per-recipe Transforms</span>
<span class="Comment">// map names to addresses</span>
for <span class="Delimiter">(</span>long long int 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>
check_metadata<span class="Delimiter">(</span>metadata<span class="Delimiter">,</span> inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>in<span class="Delimiter">),</span> r<span class="Delimiter">);</span>
if <span class="Delimiter">(</span>is_numeric_location<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>in<span class="Delimiter">)))</span> numeric_locations_used = <span class="Constant">true</span><span class="Delimiter">;</span>
if <span class="Delimiter">(</span>is_named_location<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>in<span class="Delimiter">)))</span> names_used = <span class="Constant">true</span><span class="Delimiter">;</span>
if <span class="Delimiter">(</span>disqualified<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>in<span class="Delimiter">)))</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>
if <span class="Delimiter">(</span>!already_transformed<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>in<span class="Delimiter">),</span> names<span class="Delimiter">))</span> <span class="Delimiter">{</span>
raise << <span class="Constant">"use before set: "</span> << inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>in<span class="Delimiter">).</span>name << <span class="Constant">" in "</span> << Recipe[r]<span class="Delimiter">.</span>name << <span class="cSpecial">'\n'</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>in<span class="Delimiter">).</span>set_value<span class="Delimiter">(</span>lookup_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> r<span class="Delimiter">));</span>
<span class="Delimiter">}</span>
for <span class="Delimiter">(</span>long long int 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>
check_metadata<span class="Delimiter">(</span>metadata<span class="Delimiter">,</span> inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>out<span class="Delimiter">),</span> r<span class="Delimiter">);</span>
if <span class="Delimiter">(</span>is_numeric_location<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>out<span class="Delimiter">)))</span> numeric_locations_used = <span class="Constant">true</span><span class="Delimiter">;</span>
if <span class="Delimiter">(</span>is_named_location<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>out<span class="Delimiter">)))</span> names_used = <span class="Constant">true</span><span class="Delimiter">;</span>
if <span class="Delimiter">(</span>disqualified<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>out<span class="Delimiter">)))</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>
if <span class="Delimiter">(</span>names<span class="Delimiter">.</span>find<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>out<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">"name"</span><span class="Delimiter">)</span> << <span class="Constant">"assign "</span> << inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>out<span class="Delimiter">).</span>name << <span class="Constant">" "</span> << curr_idx<span class="Delimiter">;</span>
names[inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>out<span class="Delimiter">).</span>name] = curr_idx<span class="Delimiter">;</span>
curr_idx += size_of<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>out<span class="Delimiter">));</span>
<span class="Delimiter">}</span>
inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>out<span class="Delimiter">).</span>set_value<span class="Delimiter">(</span>lookup_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> r<span class="Delimiter">));</span>
<span class="Delimiter">}</span>
<span class="Delimiter">}</span>
if <span class="Delimiter">(</span>names_used && numeric_locations_used && r != Recipe_number[<span class="Constant">"interactive"</span>]<span class="Delimiter">)</span>
raise << <span class="Constant">"mixing variable names and numeric addresses in "</span> << Recipe[r]<span class="Delimiter">.</span>name << <span class="cSpecial">'\n'</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
void check_metadata<span class="Delimiter">(</span>map<string<span class="Delimiter">,</span> vector<type_number> >& metadata<span class="Delimiter">,</span> const reagent& x<span class="Delimiter">,</span> const recipe_number r<span class="Delimiter">)</span> <span class="Delimiter">{</span>
if <span class="Delimiter">(</span>is_literal<span class="Delimiter">(</span>x<span class="Delimiter">))</span> <span class="Identifier">return</span><span class="Delimiter">;</span>
if <span class="Delimiter">(</span>is_raw<span class="Delimiter">(</span>x<span class="Delimiter">))</span> <span class="Identifier">return</span><span class="Delimiter">;</span>
<span class="Comment">// if you use raw locations you're probably doing something unsafe</span>
if <span class="Delimiter">(</span>is_integer<span class="Delimiter">(</span>x<span class="Delimiter">.</span>name<span class="Delimiter">))</span> <span class="Identifier">return</span><span class="Delimiter">;</span>
if <span class="Delimiter">(</span>metadata<span class="Delimiter">.</span>find<span class="Delimiter">(</span>x<span class="Delimiter">.</span>name<span class="Delimiter">)</span> == metadata<span class="Delimiter">.</span>end<span class="Delimiter">())</span>
metadata[x<span class="Delimiter">.</span>name] = x<span class="Delimiter">.</span>types<span class="Delimiter">;</span>
if <span class="Delimiter">(</span>metadata[x<span class="Delimiter">.</span>name] != x<span class="Delimiter">.</span>types<span class="Delimiter">)</span>
raise << x<span class="Delimiter">.</span>name << <span class="Constant">" used with multiple types in "</span> << Recipe[r]<span class="Delimiter">.</span>name << <span class="cSpecial">'\n'</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
bool 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="Delimiter">{</span>
<span class="CommentedCode">//? cerr << x.to_string() << '\n'; //? 1</span>
if <span class="Delimiter">(</span>x<span class="Delimiter">.</span>types<span class="Delimiter">.</span>empty<span class="Delimiter">())</span>
raise << <span class="Constant">"missing type in "</span> << x<span class="Delimiter">.</span>to_string<span class="Delimiter">()</span> << <span class="cSpecial">'\n'</span><span class="Delimiter">;</span>
assert<span class="Delimiter">(</span>!x<span class="Delimiter">.</span>types<span class="Delimiter">.</span>empty<span class="Delimiter">());</span>
if <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>
if <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>
if <span class="Delimiter">(</span>is_integer<span class="Delimiter">(</span>x<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">// End Disqualified Reagents</span>
if <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>
bool already_transformed<span class="Delimiter">(</span>const reagent& r<span class="Delimiter">,</span> const map<string<span class="Delimiter">,</span> long long int>& names<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Identifier">return</span> names<span class="Delimiter">.</span>find<span class="Delimiter">(</span>r<span class="Delimiter">.</span>name<span class="Delimiter">)</span> != names<span class="Delimiter">.</span>end<span class="Delimiter">();</span>
<span class="Delimiter">}</span>
long long int lookup_name<span class="Delimiter">(</span>const reagent& r<span class="Delimiter">,</span> const recipe_number 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_number skip_addresses<span class="Delimiter">(</span>const vector<type_number>& types<span class="Delimiter">)</span> <span class="Delimiter">{</span>
for <span class="Delimiter">(</span>long long int i = <span class="Constant">0</span><span class="Delimiter">;</span> i < SIZE<span class="Delimiter">(</span>types<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
if <span class="Delimiter">(</span>types<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">)</span> != Type_number[<span class="Constant">"address"</span>]<span class="Delimiter">)</span> <span class="Identifier">return</span> types<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">);</span>
<span class="Delimiter">}</span>
raise << <span class="Constant">"expected a container"</span> << <span class="cSpecial">'\n'</span> << die<span class="Delimiter">();</span>
<span class="Identifier">return</span> -<span class="Constant">1</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
int find_element_name<span class="Delimiter">(</span>const type_number t<span class="Delimiter">,</span> const string& name<span class="Delimiter">)</span> <span class="Delimiter">{</span>
const type_info& container = Type[t]<span class="Delimiter">;</span>
<span class="CommentedCode">//? cout << "looking for element " << name << " in type " << container.name << " with " << SIZE(container.element_names) << " elements\n"; //? 1</span>
for <span class="Delimiter">(</span>long long int i = <span class="Constant">0</span><span class="Delimiter">;</span> i < SIZE<span class="Delimiter">(</span>container<span class="Delimiter">.</span>element_names<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
if <span class="Delimiter">(</span>container<span class="Delimiter">.</span>element_names<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">)</span> == name<span class="Delimiter">)</span> <span class="Identifier">return</span> i<span class="Delimiter">;</span>
<span class="Delimiter">}</span>
raise << <span class="Constant">"unknown element "</span> << name << <span class="Constant">" in container "</span> << Type[t]<span class="Delimiter">.</span>name << <span class="cSpecial">'\n'</span> << die<span class="Delimiter">();</span>
<span class="Identifier">return</span> -<span class="Constant">1</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
bool is_numeric_location<span class="Delimiter">(</span>const reagent& x<span class="Delimiter">)</span> <span class="Delimiter">{</span>
if <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>
if <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>
if <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>
bool is_named_location<span class="Delimiter">(</span>const reagent& x<span class="Delimiter">)</span> <span class="Delimiter">{</span>
if <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>
if <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>
if <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>
bool is_raw<span class="Delimiter">(</span>const reagent& r<span class="Delimiter">)</span> <span class="Delimiter">{</span>
for <span class="Delimiter">(</span>long long int i = <span class="Comment">/*</span><span class="Comment">skip value+type</span><span class="Comment">*/</span><span class="Constant">1</span><span class="Delimiter">;</span> i < SIZE<span class="Delimiter">(</span>r<span class="Delimiter">.</span>properties<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
if <span class="Delimiter">(</span>r<span class="Delimiter">.</span>properties<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">).</span>first == <span class="Constant">"raw"</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="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
bool is_special_name<span class="Delimiter">(</span>const string& s<span class="Delimiter">)</span> <span class="Delimiter">{</span>
if <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>
if <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 convert_names_passes_dummy)</span>
<span class="Comment"># _ is just a dummy result that never gets consumed</span>
recipe main [
_<span class="Delimiter">,</span> x:number<span class="Special"> <- </span>copy <span class="Constant">0</span>:literal<span class="Delimiter">,</span> <span class="Constant">1</span>:literal
]
<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">:(scenario convert_names_passes_raw)</span>
recipe main [
x:number/<span class="Special">raw <- </span>copy <span class="Constant">0</span>:literal
]
<span class="traceAbsent">-name: assign x 1</span>
<span class="Delimiter">:(scenario convert_names_warns_when_mixing_names_and_numeric_locations)</span>
<span class="Special">% Hide_warnings = true;</span>
recipe main [
x:number<span class="Special"> <- </span>copy <span class="Constant">1</span>:number
]
<span class="traceContains">+warn: mixing variable names and numeric addresses in main</span>
<span class="Delimiter">:(scenario convert_names_warns_when_mixing_names_and_numeric_locations2)</span>
<span class="Special">% Hide_warnings = true;</span>
recipe main [
x:number<span class="Special"> <- </span>copy <span class="Constant">1</span>:literal
<span class="Constant">1</span>:number<span class="Special"> <- </span>copy x:number
]
<span class="traceContains">+warn: mixing variable names and numeric addresses in main</span>
<span class="Delimiter">:(scenario convert_names_does_not_warn_when_mixing_names_and_raw_locations)</span>
<span class="Special">% Hide_warnings = true;</span>
recipe main [
x:number<span class="Special"> <- </span>copy <span class="Constant">1</span>:number/<span class="Special">raw</span>
]
<span class="traceAbsent">-warn: mixing variable names and numeric addresses in main</span>
$warn: <span class="Constant">0</span>
<span class="Delimiter">:(scenario convert_names_does_not_warn_when_mixing_names_and_literals)</span>
<span class="Special">% Hide_warnings = true;</span>
recipe main [
x:number<span class="Special"> <- </span>copy <span class="Constant">1</span>:literal
]
<span class="traceAbsent">-warn: mixing variable names and numeric addresses in main</span>
$warn: <span class="Constant">0</span>
<span class="Delimiter">:(scenario convert_names_warns_on_reusing_name_with_different_type)</span>
<span class="Special">% Hide_warnings = true;</span>
recipe main [
x:number<span class="Special"> <- </span>copy <span class="Constant">1</span>:literal
x:boolean<span class="Special"> <- </span>copy <span class="Constant">1</span>:literal
]
<span class="traceContains">+warn: x used with multiple types in main</span>
<span class="SalientComment">//:: Support element names for containers in 'get' and 'get-address'.</span>
<span class="Comment">//: update our running example container for the next test</span>
<span class="Delimiter">:(before "End Mu Types Initialization")</span>
Type[point]<span class="Delimiter">.</span>element_names<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span><span class="Constant">"x"</span><span class="Delimiter">);</span>
Type[point]<span class="Delimiter">.</span>element_names<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span><span class="Constant">"y"</span><span class="Delimiter">);</span>
<span class="Delimiter">:(scenario convert_names_transforms_container_elements)</span>
recipe main [
p:address:point<span class="Special"> <- </span>copy <span class="Constant">0</span>:literal <span class="Comment"># unsafe</span>
a:number<span class="Special"> <- </span>get p:address:point/deref<span class="Delimiter">,</span> y:offset
b:number<span class="Special"> <- </span>get p:address:point/deref<span class="Delimiter">,</span> x:offset
]
<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">:(after "Per-recipe Transforms")</span>
<span class="Comment">// replace element names of containers with offsets</span>
if <span class="Delimiter">(</span>inst<span class="Delimiter">.</span>operation == Recipe_number[<span class="Constant">"get"</span>]
|| inst<span class="Delimiter">.</span>operation == Recipe_number[<span class="Constant">"get-address"</span>]<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Comment">// at least 2 args, and second arg is offset</span>
assert<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="CommentedCode">//? cout << inst.ingredients.at(1).to_string() << '\n'; //? 1</span>
if <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>
raise << inst<span class="Delimiter">.</span>to_string<span class="Delimiter">()</span> << <span class="Constant">": expected literal; got "</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>to_string<span class="Delimiter">()</span> << <span class="cSpecial">'\n'</span> << die<span class="Delimiter">();</span>
if <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_number 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>types<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>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>
trace<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> << Type[base_type]<span class="Delimiter">.</span>name << <span class="Constant">" is at offset "</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>
<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 convert_names_handles_containers)</span>
recipe main [
a:point<span class="Special"> <- </span>copy <span class="Constant">0</span>:literal
b:number<span class="Special"> <- </span>copy <span class="Constant">0</span>:literal
]
<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 maybe_convert_named)</span>
recipe main [
<span class="Constant">12</span>:number<span class="Special"> <- </span>copy <span class="Constant">1</span>:literal
<span class="Constant">13</span>:number<span class="Special"> <- </span>copy <span class="Constant">35</span>:literal
<span class="Constant">14</span>:number<span class="Special"> <- </span>copy <span class="Constant">36</span>:literal
<span class="Constant">20</span>:address:point<span class="Special"> <- </span>maybe-convert <span class="Constant">12</span>:number-or-point/<span class="Special">raw</span><span class="Delimiter">,</span> p:variant <span class="Comment"># unsafe</span>
]
<span class="traceContains">+name: variant p of type number-or-point has tag 1</span>
<span class="traceContains">+mem: storing 13 in location 20</span>
<span class="Delimiter">:(after "Per-recipe Transforms")</span>
<span class="Comment">// convert variant names of exclusive containers</span>
if <span class="Delimiter">(</span>inst<span class="Delimiter">.</span>operation == Recipe_number[<span class="Constant">"maybe-convert"</span>]<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Comment">// at least 2 args, and second arg is offset</span>
assert<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>
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>
if <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_number 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>types<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>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>
trace<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> << Type[base_type]<span class="Delimiter">.</span>name << <span class="Constant">" has tag "</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>
<span class="Delimiter">}</span>
<span class="Delimiter">}</span>
</pre>
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