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<span class="Comment">//: Writing to a literal (not computed) address of 0 in a recipe chains two</span>
<span class="Comment">//: spaces together. When a variable has a property of /space:1, it looks up</span>
<span class="Comment">//: the variable in the chained/surrounding space. /space:2 looks up the</span>
<span class="Comment">//: surrounding space of the surrounding space, etc.</span>
<span class="Delimiter">:(scenario closure)</span>
recipe main [
default-space:address:array:location<span class="Special"> <- </span>new location:type<span class="Delimiter">,</span> <span class="Constant">30</span>
<span class="Constant">1</span>:address:array:location/names:new-counter<span class="Special"> <- </span>new-counter
<span class="Constant">2</span>:number/<span class="Special">raw <- </span>increment-counter <span class="Constant">1</span>:address:array:location/names:new-counter
<span class="Constant">3</span>:number/<span class="Special">raw <- </span>increment-counter <span class="Constant">1</span>:address:array:location/names:new-counter
]
recipe new-counter [
default-space:address:array:location<span class="Special"> <- </span>new location:type<span class="Delimiter">,</span> <span class="Constant">30</span>
x:number<span class="Special"> <- </span>copy <span class="Constant">23</span>
y:number<span class="Special"> <- </span>copy <span class="Constant">3</span> <span class="Comment"># variable that will be incremented</span>
reply default-space:address:array:location
]
recipe increment-counter [
default-space:address:array:location<span class="Special"> <- </span>new location:type<span class="Delimiter">,</span> <span class="Constant">30</span>
<span class="Constant">0</span>:address:array:location/names:new-counter<span class="Special"> <- </span>next-ingredient <span class="Comment"># outer space must be created by 'new-counter' above</span>
y:number/space:<span class="Constant">1</span><span class="Special"> <- </span>add y:number/space:<span class="Constant">1</span><span class="Delimiter">,</span> <span class="Constant">1</span> <span class="Comment"># increment</span>
y:number<span class="Special"> <- </span>copy <span class="Constant">234</span> <span class="Comment"># dummy</span>
reply y:number/space:<span class="Constant">1</span>
]
<span class="traceContains">+name: recipe increment-counter is surrounded by new-counter</span>
<span class="traceContains">+mem: storing 5 in location 3</span>
<span class="Comment">//: To make this work, compute the recipe that provides names for the</span>
<span class="Comment">//: surrounding space of each recipe. This must happen before transform_names.</span>
<span class="Delimiter">:(before "End Globals")</span>
map<recipe_ordinal<span class="Delimiter">,</span> recipe_ordinal> Surrounding_space<span class="Delimiter">;</span>
<span class="Delimiter">:(after "int main")</span>
Transform<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>collect_surrounding_spaces<span class="Delimiter">);</span>
<span class="Delimiter">:(code)</span>
void collect_surrounding_spaces<span class="Delimiter">(</span>const recipe_ordinal r<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>Recipe[r]<span class="Delimiter">.</span>steps<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
const instruction& inst = Recipe[r]<span class="Delimiter">.</span>steps<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">);</span>
if <span class="Delimiter">(</span>inst<span class="Delimiter">.</span>is_label<span class="Delimiter">)</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>
for <span class="Delimiter">(</span>long long int 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> <span class="Delimiter">{</span>
if <span class="Delimiter">(</span>is_literal<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>j<span class="Delimiter">)))</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>
if <span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>j<span class="Delimiter">).</span>name != <span class="Constant">"0"</span><span class="Delimiter">)</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>
if <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>j<span class="Delimiter">).</span>types<span class="Delimiter">)</span> != <span class="Constant">3</span>
|| inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>j<span class="Delimiter">).</span>types<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)</span> != Type_ordinal[<span class="Constant">"address"</span>]
|| inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>j<span class="Delimiter">).</span>types<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">)</span> != Type_ordinal[<span class="Constant">"array"</span>]
|| inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>j<span class="Delimiter">).</span>types<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">2</span><span class="Delimiter">)</span> != Type_ordinal[<span class="Constant">"location"</span>]<span class="Delimiter">)</span> <span class="Delimiter">{</span>
raise << <span class="Constant">"slot 0 should always have type address:array:location, but is "</span> << inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>j<span class="Delimiter">).</span>to_string<span class="Delimiter">()</span> << <span class="cSpecial">'\n'</span> << end<span class="Delimiter">();</span>
<span class="Identifier">continue</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
vector<string> s = property<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>j<span class="Delimiter">),</span> <span class="Constant">"names"</span><span class="Delimiter">);</span>
if <span class="Delimiter">(</span>s<span class="Delimiter">.</span>empty<span class="Delimiter">())</span> <span class="Delimiter">{</span>
raise << <span class="Constant">"slot 0 requires a /names property in recipe "</span> << Recipe[r]<span class="Delimiter">.</span>name << end<span class="Delimiter">();</span>
<span class="Identifier">continue</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
if <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>s<span class="Delimiter">)</span> > <span class="Constant">1</span><span class="Delimiter">)</span> raise << <span class="Constant">"slot 0 should have a single value in /names, but got "</span> << inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>j<span class="Delimiter">).</span>to_string<span class="Delimiter">()</span> << <span class="cSpecial">'\n'</span> << end<span class="Delimiter">();</span>
string surrounding_recipe_name = s<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
if <span class="Delimiter">(</span>Surrounding_space<span class="Delimiter">.</span>find<span class="Delimiter">(</span>r<span class="Delimiter">)</span> != Surrounding_space<span class="Delimiter">.</span>end<span class="Delimiter">()</span>
&& Surrounding_space[r] != Recipe_ordinal[surrounding_recipe_name]<span class="Delimiter">)</span> <span class="Delimiter">{</span>
raise << <span class="Constant">"recipe "</span> << Recipe[r]<span class="Delimiter">.</span>name << <span class="Constant">" can have only one 'surrounding' recipe but has "</span> << Recipe[Surrounding_space[r]]<span class="Delimiter">.</span>name << <span class="Constant">" and "</span> << surrounding_recipe_name << <span class="cSpecial">'\n'</span> << end<span class="Delimiter">();</span>
<span class="Identifier">continue</span><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">"recipe "</span> << Recipe[r]<span class="Delimiter">.</span>name << <span class="Constant">" is surrounded by "</span> << surrounding_recipe_name << end<span class="Delimiter">();</span>
Surrounding_space[r] = Recipe_ordinal[surrounding_recipe_name]<span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Delimiter">}</span>
<span class="Delimiter">}</span>
<span class="Comment">//: Once surrounding spaces are available, transform_names uses them to handle</span>
<span class="Comment">//: /space properties.</span>
<span class="Delimiter">:(replace{} "long long int lookup_name(const reagent& r, const recipe_ordinal default_recipe)")</span>
long long int lookup_name<span class="Delimiter">(</span>const reagent& x<span class="Delimiter">,</span> const recipe_ordinal default_recipe<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="CommentedCode">//? cout << "AAA " << default_recipe << " " << Recipe[default_recipe].name << '\n'; //? 2</span>
<span class="CommentedCode">//? cout << "AAA " << x.to_string() << '\n'; //? 1</span>
if <span class="Delimiter">(</span>!has_property<span class="Delimiter">(</span>x<span class="Delimiter">,</span> <span class="Constant">"space"</span><span class="Delimiter">))</span> <span class="Delimiter">{</span>
if <span class="Delimiter">(</span>Name[default_recipe]<span class="Delimiter">.</span>empty<span class="Delimiter">())</span> raise << <span class="Constant">"name not found: "</span> << x<span class="Delimiter">.</span>name << <span class="cSpecial">'\n'</span> << end<span class="Delimiter">();</span>
<span class="Identifier">return</span> Name[default_recipe][x<span class="Delimiter">.</span>name]<span class="Delimiter">;</span>
<span class="Delimiter">}</span>
vector<string> p = property<span class="Delimiter">(</span>x<span class="Delimiter">,</span> <span class="Constant">"space"</span><span class="Delimiter">);</span>
if <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>p<span class="Delimiter">)</span> != <span class="Constant">1</span><span class="Delimiter">)</span> raise << <span class="Constant">"/space property should have exactly one (non-negative integer) value</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span>
long long int n = to_integer<span class="Delimiter">(</span>p<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">));</span>
assert<span class="Delimiter">(</span>n >= <span class="Constant">0</span><span class="Delimiter">);</span>
recipe_ordinal surrounding_recipe = lookup_surrounding_recipe<span class="Delimiter">(</span>default_recipe<span class="Delimiter">,</span> n<span class="Delimiter">);</span>
set<recipe_ordinal> done<span class="Delimiter">;</span>
vector<recipe_ordinal> path<span class="Delimiter">;</span>
<span class="Identifier">return</span> lookup_name<span class="Delimiter">(</span>x<span class="Delimiter">,</span> surrounding_recipe<span class="Delimiter">,</span> done<span class="Delimiter">,</span> path<span class="Delimiter">);</span>
<span class="Delimiter">}</span>
<span class="Comment">// If the recipe we need to lookup this name in doesn't have names done yet,</span>
<span class="Comment">// recursively call transform_names on it.</span>
long long int lookup_name<span class="Delimiter">(</span>const reagent& x<span class="Delimiter">,</span> const recipe_ordinal r<span class="Delimiter">,</span> set<recipe_ordinal>& done<span class="Delimiter">,</span> vector<recipe_ordinal>& path<span class="Delimiter">)</span> <span class="Delimiter">{</span>
if <span class="Delimiter">(</span>!Name[r]<span class="Delimiter">.</span>empty<span class="Delimiter">())</span> <span class="Identifier">return</span> Name[r][x<span class="Delimiter">.</span>name]<span class="Delimiter">;</span>
if <span class="Delimiter">(</span>done<span class="Delimiter">.</span>find<span class="Delimiter">(</span>r<span class="Delimiter">)</span> != done<span class="Delimiter">.</span>end<span class="Delimiter">())</span> <span class="Delimiter">{</span>
raise << <span class="Constant">"can't compute address of "</span> << x<span class="Delimiter">.</span>to_string<span class="Delimiter">()</span> << <span class="Constant">" because "</span> << end<span class="Delimiter">();</span>
for <span class="Delimiter">(</span>long long int i = <span class="Constant">1</span><span class="Delimiter">;</span> i < SIZE<span class="Delimiter">(</span>path<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
raise << path<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i-<span class="Constant">1</span><span class="Delimiter">)</span> << <span class="Constant">" requires computing names of "</span> << path<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">)</span> << <span class="cSpecial">'\n'</span> << end<span class="Delimiter">();</span>
<span class="Delimiter">}</span>
raise << path<span class="Delimiter">.</span>at<span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>path<span class="Delimiter">)</span>-<span class="Constant">1</span><span class="Delimiter">)</span> << <span class="Constant">" requires computing names of "</span> << r << <span class="Constant">"..ad infinitum</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span>
<span class="Identifier">return</span> <span class="Constant">0</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
done<span class="Delimiter">.</span>insert<span class="Delimiter">(</span>r<span class="Delimiter">);</span>
path<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>r<span class="Delimiter">);</span>
transform_names<span class="Delimiter">(</span>r<span class="Delimiter">);</span> <span class="Comment">// Not passing 'done' through. Might this somehow cause an infinite loop?</span>
assert<span class="Delimiter">(</span>!Name[r]<span class="Delimiter">.</span>empty<span class="Delimiter">());</span>
<span class="Identifier">return</span> Name[r][x<span class="Delimiter">.</span>name]<span class="Delimiter">;</span>
<span class="Delimiter">}</span>
recipe_ordinal lookup_surrounding_recipe<span class="Delimiter">(</span>const recipe_ordinal r<span class="Delimiter">,</span> long long int n<span class="Delimiter">)</span> <span class="Delimiter">{</span>
if <span class="Delimiter">(</span>n == <span class="Constant">0</span><span class="Delimiter">)</span> <span class="Identifier">return</span> r<span class="Delimiter">;</span>
if <span class="Delimiter">(</span>Surrounding_space<span class="Delimiter">.</span>find<span class="Delimiter">(</span>r<span class="Delimiter">)</span> == Surrounding_space<span class="Delimiter">.</span>end<span class="Delimiter">())</span> <span class="Delimiter">{</span>
raise << <span class="Constant">"don't know surrounding recipe of "</span> << Recipe[r]<span class="Delimiter">.</span>name << <span class="cSpecial">'\n'</span> << end<span class="Delimiter">();</span>
<span class="Identifier">return</span> <span class="Constant">0</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
assert<span class="Delimiter">(</span>Surrounding_space[r]<span class="Delimiter">);</span>
<span class="Identifier">return</span> lookup_surrounding_recipe<span class="Delimiter">(</span>Surrounding_space[r]<span class="Delimiter">,</span> n-<span class="Constant">1</span><span class="Delimiter">);</span>
<span class="Delimiter">}</span>
<span class="Comment">//: weaken use-before-set warnings just a tad</span>
<span class="Delimiter">:(replace{} "bool already_transformed(const reagent& r, const map<string, long long int>& names)")</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>
if <span class="Delimiter">(</span>has_property<span class="Delimiter">(</span>r<span class="Delimiter">,</span> <span class="Constant">"space"</span><span class="Delimiter">))</span> <span class="Delimiter">{</span>
vector<string> p = property<span class="Delimiter">(</span>r<span class="Delimiter">,</span> <span class="Constant">"space"</span><span class="Delimiter">);</span>
if <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>p<span class="Delimiter">)</span> != <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
raise << <span class="Constant">"/space property should have exactly one (non-negative integer) value in "</span> << r<span class="Delimiter">.</span>original_string << <span class="cSpecial">'\n'</span> << end<span class="Delimiter">();</span>
<span class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
if <span class="Delimiter">(</span>p<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)</span> != <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="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>
</pre>
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