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<pre id='vimCodeElement'>
<span class="Comment">//: So far we've been calling a fixed recipe in each instruction, but we'd</span>
<span class="Comment">//: also like to make the recipe a variable, pass recipes to "higher-order"</span>
<span class="Comment">//: recipes, return recipes from recipes and so on.</span>
<span class="Comment">//:</span>
<span class="Comment">//: todo: support storing shape-shifting recipes into recipe variables and calling them</span>
<span class="Delimiter">:(scenario call_literal_recipe)</span>
<span class="muRecipe">def</span> main [
<span class="Constant">1</span>:num<span class="Special"> <- </span>call f<span class="Delimiter">,</span> <span class="Constant">34</span>
]
<span class="muRecipe">def</span> f x:num<span class="muRecipe"> -> </span>y:num [
local-scope
load-ingredients
y<span class="Special"> <- </span>copy x
]
<span class="traceContains">+mem: storing 34 in location 1</span>
<span class="Delimiter">:(scenario call_variable)</span>
<span class="muRecipe">def</span> main [
<span class="Delimiter">{</span><span class="Constant">1</span>: <span class="Delimiter">(</span>recipe number<span class="muRecipe"> -> </span>number<span class="Delimiter">)}</span><span class="Special"> <- </span>copy f
<span class="Constant">2</span>:num<span class="Special"> <- </span>call <span class="Delimiter">{</span><span class="Constant">1</span>: <span class="Delimiter">(</span>recipe number<span class="muRecipe"> -> </span>number<span class="Delimiter">)},</span> <span class="Constant">34</span>
]
<span class="muRecipe">def</span> f x:num<span class="muRecipe"> -> </span>y:num [
local-scope
load-ingredients
y<span class="Special"> <- </span>copy x
]
<span class="traceContains">+mem: storing 34 in location 2</span>
<span class="Delimiter">:(before "End Mu Types Initialization")</span>
put<span class="Delimiter">(</span>Type_ordinal<span class="Delimiter">,</span> <span class="Constant">"recipe-literal"</span><span class="Delimiter">,</span> <span class="Constant">0</span><span class="Delimiter">);</span>
<span class="Comment">// 'recipe' variables can store recipe-literal</span>
type_ordinal recipe = put<span class="Delimiter">(</span>Type_ordinal<span class="Delimiter">,</span> <span class="Constant">"recipe"</span><span class="Delimiter">,</span> Next_type_ordinal++<span class="Delimiter">);</span>
get_or_insert<span class="Delimiter">(</span>Type<span class="Delimiter">,</span> recipe<span class="Delimiter">).</span>name = <span class="Constant">"recipe"</span><span class="Delimiter">;</span>
<span class="Delimiter">:(after "Begin transform_names Ingredient Special-cases(ingredient, inst, caller)")</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>is_recipe_literal<span class="Delimiter">(</span>ingredient<span class="Delimiter">,</span> caller<span class="Delimiter">))</span> <span class="Delimiter">{</span>
initialize_recipe_literal<span class="Delimiter">(</span>ingredient<span class="Delimiter">);</span>
<span class="Identifier">continue</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Delimiter">:(after "Begin transform_names Product Special-cases(product, inst, caller)")</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>is_recipe_literal<span class="Delimiter">(</span>product<span class="Delimiter">,</span> caller<span class="Delimiter">))</span> <span class="Delimiter">{</span>
initialize_recipe_literal<span class="Delimiter">(</span>product<span class="Delimiter">);</span>
<span class="Identifier">continue</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Delimiter">:(code)</span>
<span class="Normal">bool</span> is_recipe_literal<span class="Delimiter">(</span><span class="Normal">const</span> reagent& x<span class="Delimiter">,</span> <span class="Normal">const</span> recipe& caller<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="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!contains_key<span class="Delimiter">(</span>Recipe_ordinal<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="Normal">if</span> <span class="Delimiter">(</span>contains_reagent_with_type<span class="Delimiter">(</span>caller<span class="Delimiter">,</span> x<span class="Delimiter">.</span>name<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">"you can't use '"</span> << x<span class="Delimiter">.</span>name << <span class="Constant">"' as a recipe literal when it's also a variable</span><span class="cSpecial">\n</span><span class="Constant">"</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="Identifier">return</span> <span class="Constant">true</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Normal">void</span> initialize_recipe_literal<span class="Delimiter">(</span>reagent& x<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><span class="Constant">"recipe-literal"</span><span class="Delimiter">);</span>
x<span class="Delimiter">.</span>set_value<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> x<span class="Delimiter">.</span>name<span class="Delimiter">));</span>
<span class="Delimiter">}</span>
<span class="Normal">bool</span> contains_reagent_with_type<span class="Delimiter">(</span><span class="Normal">const</span> recipe& caller<span class="Delimiter">,</span> <span class="Normal">const</span> string& name<span class="Delimiter">)</span> <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>caller<span class="Delimiter">.</span>steps<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Normal">const</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="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>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>is_matching_non_recipe_literal<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<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="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>inst<span class="Delimiter">.</span>products<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>is_matching_non_recipe_literal<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<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="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> is_matching_non_recipe_literal<span class="Delimiter">(</span><span class="Normal">const</span> reagent& x<span class="Delimiter">,</span> <span class="Normal">const</span> string& name<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>x<span class="Delimiter">.</span>name != name<span class="Delimiter">)</span> <span class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!x<span class="Delimiter">.</span>type<span class="Delimiter">)</span> <span class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!x<span class="Delimiter">.</span>type<span class="Delimiter">-></span>atom<span class="Delimiter">)</span> <span class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span>
<span class="Identifier">return</span> x<span class="Delimiter">.</span>type<span class="Delimiter">-></span>value != get<span class="Delimiter">(</span>Type_ordinal<span class="Delimiter">,</span> <span class="Constant">"recipe-literal"</span><span class="Delimiter">);</span>
<span class="Delimiter">}</span>
<span class="Comment">//: It's confusing to use variable names that are also recipe names. Always</span>
<span class="Comment">//: assume variable types override recipe literals.</span>
<span class="Delimiter">:(scenario error_on_recipe_literal_used_as_a_variable)</span>
<span class="Special">% Hide_errors = true;</span>
<span class="muRecipe">def</span> main [
local-scope
<span class="Normal">a</span>:<span class="Normal">bool</span><span class="Special"> <- </span>equal <span class="Identifier">break</span> <span class="Constant">0</span>
<span class="Normal">break</span>:<span class="Normal">bool</span><span class="Special"> <- </span>copy <span class="Constant">0</span>
]
<span class="traceContains">+error: main: you can't use 'break' as a recipe literal when it's also a variable</span>
<span class="traceContains">+error: main: missing type for 'break' in 'a:bool <- equal break, 0'</span>
<span class="Delimiter">:(before "End Primitive Recipe Declarations")</span>
CALL<span class="Delimiter">,</span>
<span class="Delimiter">:(before "End Primitive Recipe Numbers")</span>
put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> <span class="Constant">"call"</span><span class="Delimiter">,</span> CALL<span class="Delimiter">);</span>
<span class="Delimiter">:(before "End Primitive Recipe Checks")</span>
<span class="Normal">case</span> CALL: <span class="Delimiter">{</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>empty<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">"'call' requires at least one ingredient (the recipe to call)</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>
<span class="Normal">if</span> <span class="Delimiter">(</span>!is_mu_recipe<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span>
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">"first ingredient of 'call' should be a recipe, but got '"</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>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>
<span class="Identifier">break</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Delimiter">:(before "End Primitive Recipe Implementations")</span>
<span class="Normal">case</span> CALL: <span class="Delimiter">{</span>
<span class="Comment">// Begin Call</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>Trace_stream<span class="Delimiter">)</span> <span class="Delimiter">{</span>
++Trace_stream<span class="Delimiter">-></span>callstack_depth<span class="Delimiter">;</span>
trace<span class="Delimiter">(</span><span class="Constant">"trace"</span><span class="Delimiter">)</span> << <span class="Constant">"indirect 'call': incrementing callstack depth to "</span> << Trace_stream<span class="Delimiter">-></span>callstack_depth << end<span class="Delimiter">();</span>
assert<span class="Delimiter">(</span>Trace_stream<span class="Delimiter">-></span>callstack_depth < <span class="Constant">9000</span><span class="Delimiter">);</span> <span class="Comment">// 9998-101 plus cushion</span>
<span class="Delimiter">}</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">))</span> <span class="Delimiter">{</span>
raise << maybe<span class="Delimiter">(</span>current_recipe_name<span class="Delimiter">())</span> << <span class="Constant">"tried to call empty recipe in '"</span> << to_string<span class="Delimiter">(</span>current_instruction<span class="Delimiter">())</span> << <span class="Constant">"'"</span> << end<span class="Delimiter">();</span>
<span class="Identifier">break</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Normal">const</span> instruction& caller_instruction = current_instruction<span class="Delimiter">();</span>
Current_routine<span class="Delimiter">-></span>calls<span class="Delimiter">.</span>push_front<span class="Delimiter">(</span>call<span class="Delimiter">(</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)));</span>
ingredients<span class="Delimiter">.</span>erase<span class="Delimiter">(</span>ingredients<span class="Delimiter">.</span>begin<span class="Delimiter">());</span> <span class="Comment">// drop the callee</span>
finish_call_housekeeping<span class="Delimiter">(</span>caller_instruction<span class="Delimiter">,</span> ingredients<span class="Delimiter">);</span>
<span class="Identifier">continue</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="SalientComment">//:: check types for 'call' instructions</span>
<span class="Delimiter">:(scenario call_check_literal_recipe)</span>
<span class="Special">% Hide_errors = true;</span>
<span class="muRecipe">def</span> main [
<span class="Constant">1</span>:num<span class="Special"> <- </span>call f<span class="Delimiter">,</span> <span class="Constant">34</span>
]
<span class="muRecipe">def</span> f x:point<span class="muRecipe"> -> </span>y:point [
local-scope
load-ingredients
y<span class="Special"> <- </span>copy x
]
<span class="traceContains">+error: main: ingredient 0 has the wrong type at '1:num <- call f, 34'</span>
<span class="traceContains">+error: main: product 0 has the wrong type at '1:num <- call f, 34'</span>
<span class="Delimiter">:(scenario call_check_variable_recipe)</span>
<span class="Special">% Hide_errors = true;</span>
<span class="muRecipe">def</span> main [
<span class="Delimiter">{</span><span class="Constant">1</span>: <span class="Delimiter">(</span>recipe point<span class="muRecipe"> -> </span>point<span class="Delimiter">)}</span><span class="Special"> <- </span>copy f
<span class="Constant">2</span>:num<span class="Special"> <- </span>call <span class="Delimiter">{</span><span class="Constant">1</span>: <span class="Delimiter">(</span>recipe point<span class="muRecipe"> -> </span>point<span class="Delimiter">)},</span> <span class="Constant">34</span>
]
<span class="muRecipe">def</span> f x:point<span class="muRecipe"> -> </span>y:point [
local-scope
load-ingredients
y<span class="Special"> <- </span>copy x
]
<span class="traceContains">+error: main: ingredient 0 has the wrong type at '2:num <- call {1: (recipe point -> point)}, 34'</span>
<span class="traceContains">+error: main: product 0 has the wrong type at '2:num <- call {1: (recipe point -> point)}, 34'</span>
<span class="Delimiter">:(after "Transform.push_back(check_instruction)")</span>
Transform<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>check_indirect_calls_against_header<span class="Delimiter">);</span> <span class="Comment">// idempotent</span>
<span class="Delimiter">:(code)</span>
<span class="Normal">void</span> check_indirect_calls_against_header<span class="Delimiter">(</span><span class="Normal">const</span> recipe_ordinal r<span class="Delimiter">)</span> <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">"--- type-check 'call' instructions inside recipe "</span> << get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name << end<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">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>
<span class="Normal">const</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="Normal">if</span> <span class="Delimiter">(</span>inst<span class="Delimiter">.</span>operation != CALL<span class="Delimiter">)</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>empty<span class="Delimiter">())</span> <span class="Identifier">continue</span><span class="Delimiter">;</span> <span class="Comment">// error raised above</span>
<span class="Normal">const</span> reagent& callee = inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!is_mu_recipe<span class="Delimiter">(</span>callee<span class="Delimiter">))</span> <span class="Identifier">continue</span><span class="Delimiter">;</span> <span class="Comment">// error raised above</span>
<span class="Normal">const</span> recipe callee_header = is_literal<span class="Delimiter">(</span>callee<span class="Delimiter">)</span> ? get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> callee<span class="Delimiter">.</span>value<span class="Delimiter">)</span> : from_reagent<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">));</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!callee_header<span class="Delimiter">.</span>has_header<span class="Delimiter">)</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>
<span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">long</span> <span class="Normal">int</span> i = <span class="Comment">/*</span><span class="Comment">skip callee</span><span class="Comment">*/</span><span class="Constant">1</span><span class="Delimiter">;</span> i < 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>callee_header<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span>+<span class="Comment">/*</span><span class="Comment">skip callee</span><span class="Comment">*/</span><span class="Constant">1</span><span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!types_coercible<span class="Delimiter">(</span>callee_header<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i-<span class="Comment">/*</span><span class="Comment">skip callee</span><span class="Comment">*/</span><span class="Constant">1</span><span class="Delimiter">),</span> inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">)))</span>
raise << maybe<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>name<span class="Delimiter">)</span> << <span class="Constant">"ingredient "</span> << i-<span class="Comment">/*</span><span class="Comment">skip callee</span><span class="Comment">*/</span><span class="Constant">1</span> << <span class="Constant">" has the wrong type at '"</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="Delimiter">}</span>
<span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">long</span> <span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < 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>callee_header<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>!types_coercible<span class="Delimiter">(</span>callee_header<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>
raise << maybe<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>name<span class="Delimiter">)</span> << <span class="Constant">"product "</span> << i << <span class="Constant">" has the wrong type at '"</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="Delimiter">}</span>
<span class="Delimiter">}</span>
<span class="Delimiter">}</span>
<span class="muRecipe">recipe</span> from_reagent<span class="Delimiter">(</span><span class="Normal">const</span> reagent& r<span class="Delimiter">)</span> <span class="Delimiter">{</span>
assert<span class="Delimiter">(</span>r<span class="Delimiter">.</span>type<span class="Delimiter">);</span>
recipe result_header<span class="Delimiter">;</span> <span class="Comment">// will contain only ingredients and products, nothing else</span>
result_header<span class="Delimiter">.</span>has_header = <span class="Constant">true</span><span class="Delimiter">;</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>r<span class="Delimiter">.</span>type<span class="Delimiter">-></span>atom<span class="Delimiter">)</span> <span class="Delimiter">{</span>
assert<span class="Delimiter">(</span>r<span class="Delimiter">.</span>type<span class="Delimiter">-></span>name == <span class="Constant">"recipe"</span><span class="Delimiter">);</span>
<span class="Identifier">return</span> result_header<span class="Delimiter">;</span>
<span class="Delimiter">}</span>
assert<span class="Delimiter">(</span>root_type<span class="Delimiter">(</span>r<span class="Delimiter">.</span>type<span class="Delimiter">)-></span>name == <span class="Constant">"recipe"</span><span class="Delimiter">);</span>
<span class="Normal">const</span> type_tree* curr = r<span class="Delimiter">.</span>type<span class="Delimiter">-></span>right<span class="Delimiter">;</span>
<span class="Normal">for</span> <span class="Delimiter">(</span><span class="Comment">/*</span><span class="Comment">nada</span><span class="Comment">*/</span><span class="Delimiter">;</span> curr && !curr<span class="Delimiter">-></span>atom<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<span class="Delimiter">-></span>left<span class="Delimiter">-></span>atom && curr<span class="Delimiter">-></span>left<span class="Delimiter">-></span>name == <span class="Constant">"->"</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
curr = curr<span class="Delimiter">-></span>right<span class="Delimiter">;</span> <span class="Comment">// skip delimiter</span>
<span class="Identifier">goto</span> read_products<span class="Delimiter">;</span>
<span class="Delimiter">}</span>
result_header<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>next_recipe_reagent<span class="Delimiter">(</span>curr<span class="Delimiter">-></span>left<span class="Delimiter">));</span>
<span class="Delimiter">}</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>curr<span class="Delimiter">)</span> <span class="Delimiter">{</span>
assert<span class="Delimiter">(</span>curr<span class="Delimiter">-></span>atom<span class="Delimiter">);</span>
result_header<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>next_recipe_reagent<span class="Delimiter">(</span>curr<span class="Delimiter">));</span>
<span class="Identifier">return</span> result_header<span class="Delimiter">;</span> <span class="Comment">// no products</span>
<span class="Delimiter">}</span>
<span class="Normal">read_products</span>:
<span class="Normal">for</span> <span class="Delimiter">(</span><span class="Comment">/*</span><span class="Comment">nada</span><span class="Comment">*/</span><span class="Delimiter">;</span> curr && !curr<span class="Delimiter">-></span>atom<span class="Delimiter">;</span> curr = curr<span class="Delimiter">-></span>right<span class="Delimiter">)</span>
result_header<span class="Delimiter">.</span>products<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>next_recipe_reagent<span class="Delimiter">(</span>curr<span class="Delimiter">-></span>left<span class="Delimiter">));</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>curr<span class="Delimiter">)</span> <span class="Delimiter">{</span>
assert<span class="Delimiter">(</span>curr<span class="Delimiter">-></span>atom<span class="Delimiter">);</span>
result_header<span class="Delimiter">.</span>products<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>next_recipe_reagent<span class="Delimiter">(</span>curr<span class="Delimiter">));</span>
<span class="Delimiter">}</span>
<span class="Identifier">return</span> result_header<span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Delimiter">:(before "End Unit Tests")</span>
<span class="Normal">void</span> test_from_reagent_atomic<span class="Delimiter">()</span> <span class="Delimiter">{</span>
reagent a<span class="Delimiter">(</span><span class="Constant">"{f: recipe}"</span><span class="Delimiter">);</span>
recipe r_header = from_reagent<span class="Delimiter">(</span>a<span class="Delimiter">);</span>
CHECK<span class="Delimiter">(</span>r_header<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>empty<span class="Delimiter">());</span>
CHECK<span class="Delimiter">(</span>r_header<span class="Delimiter">.</span>products<span class="Delimiter">.</span>empty<span class="Delimiter">());</span>
<span class="Delimiter">}</span>
<span class="Normal">void</span> test_from_reagent_non_atomic<span class="Delimiter">()</span> <span class="Delimiter">{</span>
reagent a<span class="Delimiter">(</span><span class="Constant">"{f: (recipe number -> number)}"</span><span class="Delimiter">);</span>
recipe r_header = from_reagent<span class="Delimiter">(</span>a<span class="Delimiter">);</span>
CHECK_EQ<span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>r_header<span class="Delimiter">.</span>ingredients<span class="Delimiter">),</span> <span class="Constant">1</span><span class="Delimiter">);</span>
CHECK_EQ<span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>r_header<span class="Delimiter">.</span>products<span class="Delimiter">),</span> <span class="Constant">1</span><span class="Delimiter">);</span>
<span class="Delimiter">}</span>
<span class="Normal">void</span> test_from_reagent_reads_ingredient_at_end<span class="Delimiter">()</span> <span class="Delimiter">{</span>
reagent a<span class="Delimiter">(</span><span class="Constant">"{f: (recipe number number)}"</span><span class="Delimiter">);</span>
recipe r_header = from_reagent<span class="Delimiter">(</span>a<span class="Delimiter">);</span>
CHECK_EQ<span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>r_header<span class="Delimiter">.</span>ingredients<span class="Delimiter">),</span> <span class="Constant">2</span><span class="Delimiter">);</span>
CHECK<span class="Delimiter">(</span>r_header<span class="Delimiter">.</span>products<span class="Delimiter">.</span>empty<span class="Delimiter">());</span>
<span class="Delimiter">}</span>
<span class="Normal">void</span> test_from_reagent_reads_sole_ingredient_at_end<span class="Delimiter">()</span> <span class="Delimiter">{</span>
reagent a<span class="Delimiter">(</span><span class="Constant">"{f: (recipe number)}"</span><span class="Delimiter">);</span>
recipe r_header = from_reagent<span class="Delimiter">(</span>a<span class="Delimiter">);</span>
CHECK_EQ<span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>r_header<span class="Delimiter">.</span>ingredients<span class="Delimiter">),</span> <span class="Constant">1</span><span class="Delimiter">);</span>
CHECK<span class="Delimiter">(</span>r_header<span class="Delimiter">.</span>products<span class="Delimiter">.</span>empty<span class="Delimiter">());</span>
<span class="Delimiter">}</span>
<span class="Delimiter">:(code)</span>
reagent next_recipe_reagent<span class="Delimiter">(</span><span class="Normal">const</span> type_tree* curr<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!curr<span class="Delimiter">-></span>left<span class="Delimiter">)</span> <span class="Identifier">return</span> reagent<span class="Delimiter">(</span><span class="Constant">"recipe:"</span>+curr<span class="Delimiter">-></span>name<span class="Delimiter">);</span>
reagent result<span class="Delimiter">;</span>
result<span class="Delimiter">.</span>name = <span class="Constant">"recipe"</span><span class="Delimiter">;</span>
result<span class="Delimiter">.</span>type = <span class="Normal">new</span> type_tree<span class="Delimiter">(</span>*curr<span class="Delimiter">-></span>left<span class="Delimiter">);</span>
<span class="Identifier">return</span> result<span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Normal">bool</span> is_mu_recipe<span class="Delimiter">(</span><span class="Normal">const</span> reagent& r<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!r<span class="Delimiter">.</span>type<span class="Delimiter">)</span> <span class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>r<span class="Delimiter">.</span>type<span class="Delimiter">-></span>atom<span class="Delimiter">)</span>
<span class="Identifier">return</span> r<span class="Delimiter">.</span>type<span class="Delimiter">-></span>name == <span class="Constant">"recipe-literal"</span><span class="Delimiter">;</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!r<span class="Delimiter">.</span>type<span class="Delimiter">-></span>left<span class="Delimiter">-></span>atom<span class="Delimiter">)</span> <span class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>r<span class="Delimiter">.</span>type<span class="Delimiter">-></span>left<span class="Delimiter">-></span>name == <span class="Constant">"recipe"</span><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="Delimiter">:(scenario copy_typecheck_recipe_variable)</span>
<span class="Special">% Hide_errors = true;</span>
<span class="muRecipe">def</span> main [
<span class="Constant">3</span>:num<span class="Special"> <- </span>copy <span class="Constant">34</span> <span class="Comment"># abc def</span>
<span class="Delimiter">{</span><span class="Constant">1</span>: <span class="Delimiter">(</span>recipe number<span class="muRecipe"> -> </span>number<span class="Delimiter">)}</span><span class="Special"> <- </span>copy f <span class="Comment"># store literal in a matching variable</span>
<span class="Delimiter">{</span><span class="Constant">2</span>: <span class="Delimiter">(</span>recipe boolean<span class="muRecipe"> -> </span>boolean<span class="Delimiter">)}</span><span class="Special"> <- </span>copy <span class="Delimiter">{</span><span class="Constant">1</span>: <span class="Delimiter">(</span>recipe number<span class="muRecipe"> -> </span>number<span class="Delimiter">)}</span> <span class="Comment"># mismatch between recipe variables</span>
]
<span class="muRecipe">def</span> f x:num<span class="muRecipe"> -> </span>y:num [
local-scope
load-ingredients
y<span class="Special"> <- </span>copy x
]
<span class="traceContains">+error: main: can't copy '{1: (recipe number -> number)}' to '{2: (recipe boolean -> boolean)}'; types don't match</span>
<span class="Delimiter">:(scenario copy_typecheck_recipe_variable_2)</span>
<span class="Special">% Hide_errors = true;</span>
<span class="muRecipe">def</span> main [
<span class="Delimiter">{</span><span class="Constant">1</span>: <span class="Delimiter">(</span>recipe number<span class="muRecipe"> -> </span>number<span class="Delimiter">)}</span><span class="Special"> <- </span>copy f <span class="Comment"># mismatch with a recipe literal</span>
]
<span class="muRecipe">def</span> f x:<span class="Normal">bool</span><span class="muRecipe"> -> </span>y:<span class="Normal">bool</span> [
local-scope
load-ingredients
y<span class="Special"> <- </span>copy x
]
<span class="traceContains">+error: main: can't copy 'f' to '{1: (recipe number -> number)}'; types don't match</span>
<span class="Delimiter">:(before "End Matching Types For Literal(to)")</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>is_mu_recipe<span class="Delimiter">(</span>to<span class="Delimiter">))</span> <span class="Delimiter">{</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!contains_key<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> from<span class="Delimiter">.</span>value<span class="Delimiter">))</span> <span class="Delimiter">{</span>
raise << <span class="Constant">"trying to store recipe "</span> << from<span class="Delimiter">.</span>name << <span class="Constant">" into "</span> << to_string<span class="Delimiter">(</span>to<span class="Delimiter">)</span> << <span class="Constant">" but there's no such recipe</span><span class="cSpecial">\n</span><span class="Constant">"</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">const</span> recipe& rrhs = get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> from<span class="Delimiter">.</span>value<span class="Delimiter">);</span>
<span class="Normal">const</span> recipe& rlhs = from_reagent<span class="Delimiter">(</span>to<span class="Delimiter">);</span>
<span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">long</span> <span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < min<span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>rlhs<span class="Delimiter">.</span>ingredients<span class="Delimiter">),</span> SIZE<span class="Delimiter">(</span>rrhs<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>!types_match<span class="Delimiter">(</span>rlhs<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">),</span> rrhs<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">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">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < min<span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>rlhs<span class="Delimiter">.</span>products<span class="Delimiter">),</span> SIZE<span class="Delimiter">(</span>rrhs<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>!types_match<span class="Delimiter">(</span>rlhs<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">),</span> rrhs<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">false</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="Delimiter">:(scenario call_variable_compound_ingredient)</span>
<span class="muRecipe">def</span> main [
<span class="Delimiter">{</span><span class="Constant">1</span>: <span class="Delimiter">(</span>recipe <span class="Delimiter">(</span>address number<span class="Delimiter">)</span><span class="muRecipe"> -> </span>number<span class="Delimiter">)}</span><span class="Special"> <- </span>copy f
<span class="Constant">2</span>:&:num<span class="Special"> <- </span>copy <span class="Constant">0</span>
<span class="Constant">3</span>:num<span class="Special"> <- </span>call <span class="Delimiter">{</span><span class="Constant">1</span>: <span class="Delimiter">(</span>recipe <span class="Delimiter">(</span>address number<span class="Delimiter">)</span><span class="muRecipe"> -> </span>number<span class="Delimiter">)},</span> <span class="Constant">2</span>:&:num
]
<span class="muRecipe">def</span> f x:&:num<span class="muRecipe"> -> </span>y:num [
local-scope
load-ingredients
y<span class="Special"> <- </span>copy x
]
$error: <span class="Constant">0</span>
<span class="Comment">//: make sure we don't accidentally break on a function literal</span>
<span class="Delimiter">:(scenario jump_forbidden_on_recipe_literals)</span>
<span class="Special">% Hide_errors = true;</span>
<span class="muRecipe">def</span> foo [
local-scope
]
<span class="muRecipe">def</span> main [
local-scope
<span class="Delimiter">{</span>
<span class="Identifier">break</span>-<span class="Normal">if</span> foo
<span class="Delimiter">}</span>
]
<span class="Comment"># error should be as if foo is not a recipe</span>
<span class="traceContains">+error: main: missing type for foo in 'break-if foo'</span>
<span class="Delimiter">:(before "End JUMP_IF Checks")</span>
check_for_recipe_literals<span class="Delimiter">(</span>inst<span class="Delimiter">,</span> get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">));</span>
<span class="Delimiter">:(before "End JUMP_UNLESS Checks")</span>
check_for_recipe_literals<span class="Delimiter">(</span>inst<span class="Delimiter">,</span> get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">));</span>
<span class="Delimiter">:(code)</span>
<span class="Normal">void</span> check_for_recipe_literals<span class="Delimiter">(</span><span class="Normal">const</span> instruction& inst<span class="Delimiter">,</span> <span class="Normal">const</span> recipe& caller<span class="Delimiter">)</span> <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>inst<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>is_mu_recipe<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">)))</span>
raise << maybe<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>name<span class="Delimiter">)</span> << <span class="Constant">"missing type for "</span> << inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<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="Delimiter">}</span>
<span class="Delimiter">}</span>
</pre>
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