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<span class="Comment">//: Allow code for recipes to be pulled in from multiple places.</span>
<span class="Comment">//:</span>
<span class="Comment">//: TODO: switch recipe.steps to a more efficient data structure.</span>
<span class="Delimiter">:(scenario tangle_before)</span>
recipe main [
<span class="Constant">1</span>:number<span class="Special"> <- </span>copy <span class="Constant">0</span>:literal
+label1
<span class="Constant">3</span>:number<span class="Special"> <- </span>copy <span class="Constant">0</span>:literal
]
before +label1 [
<span class="Constant">2</span>:number<span class="Special"> <- </span>copy <span class="Constant">0</span>:literal
]
<span class="traceContains">+mem: storing 0 in location 1</span>
<span class="traceContains">+mem: storing 0 in location 2</span>
<span class="traceContains">+mem: storing 0 in location 3</span>
<span class="Comment"># nothing else</span>
$mem: <span class="Constant">3</span>
<span class="Comment">//: while loading recipes, load before/after fragments</span>
<span class="Delimiter">:(before "End Globals")</span>
map<string <span class="Comment">/*</span><span class="Comment">label</span><span class="Comment">*/</span><span class="Delimiter">,</span> recipe> Before_fragments<span class="Delimiter">,</span> After_fragments<span class="Delimiter">;</span>
<span class="Delimiter">:(before "End Setup")</span>
Before_fragments<span class="Delimiter">.</span>clear<span class="Delimiter">();</span>
After_fragments<span class="Delimiter">.</span>clear<span class="Delimiter">();</span>
<span class="Delimiter">:(before "End Command Handlers")</span>
else if <span class="Delimiter">(</span>command == <span class="Constant">"before"</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
string label = next_word<span class="Delimiter">(</span>in<span class="Delimiter">);</span>
recipe tmp = slurp_recipe<span class="Delimiter">(</span>in<span class="Delimiter">);</span>
Before_fragments[label]<span class="Delimiter">.</span>steps<span class="Delimiter">.</span>insert<span class="Delimiter">(</span>Before_fragments[label]<span class="Delimiter">.</span>steps<span class="Delimiter">.</span>end<span class="Delimiter">(),</span> tmp<span class="Delimiter">.</span>steps<span class="Delimiter">.</span>begin<span class="Delimiter">(),</span> tmp<span class="Delimiter">.</span>steps<span class="Delimiter">.</span>end<span class="Delimiter">());</span>
<span class="Delimiter">}</span>
else if <span class="Delimiter">(</span>command == <span class="Constant">"after"</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
string label = next_word<span class="Delimiter">(</span>in<span class="Delimiter">);</span>
recipe tmp = slurp_recipe<span class="Delimiter">(</span>in<span class="Delimiter">);</span>
After_fragments[label]<span class="Delimiter">.</span>steps<span class="Delimiter">.</span>insert<span class="Delimiter">(</span>After_fragments[label]<span class="Delimiter">.</span>steps<span class="Delimiter">.</span>begin<span class="Delimiter">(),</span> tmp<span class="Delimiter">.</span>steps<span class="Delimiter">.</span>begin<span class="Delimiter">(),</span> tmp<span class="Delimiter">.</span>steps<span class="Delimiter">.</span>end<span class="Delimiter">());</span>
<span class="Delimiter">}</span>
<span class="Comment">//: after all recipes are loaded, insert fragments at appropriate labels</span>
<span class="Delimiter">:(after "int main")</span>
Transform<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>insert_fragments<span class="Delimiter">);</span>
<span class="Delimiter">:(code)</span>
void insert_fragments<span class="Delimiter">(</span>const recipe_number r<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Comment">// Copy into a new vector because insertions invalidate iterators.</span>
<span class="Comment">// But this way we can't insert into labels created inside before/after.</span>
vector<instruction> result<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="Delimiter">{</span>
result<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>inst<span class="Delimiter">);</span>
<span class="Identifier">continue</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
if <span class="Delimiter">(</span>Before_fragments<span class="Delimiter">.</span>find<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>label<span class="Delimiter">)</span> != Before_fragments<span class="Delimiter">.</span>end<span class="Delimiter">())</span> <span class="Delimiter">{</span>
result<span class="Delimiter">.</span>insert<span class="Delimiter">(</span>result<span class="Delimiter">.</span>end<span class="Delimiter">(),</span> Before_fragments[inst<span class="Delimiter">.</span>label]<span class="Delimiter">.</span>steps<span class="Delimiter">.</span>begin<span class="Delimiter">(),</span> Before_fragments[inst<span class="Delimiter">.</span>label]<span class="Delimiter">.</span>steps<span class="Delimiter">.</span>end<span class="Delimiter">());</span>
<span class="Delimiter">}</span>
result<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>inst<span class="Delimiter">);</span>
if <span class="Delimiter">(</span>After_fragments<span class="Delimiter">.</span>find<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>label<span class="Delimiter">)</span> != After_fragments<span class="Delimiter">.</span>end<span class="Delimiter">())</span> <span class="Delimiter">{</span>
result<span class="Delimiter">.</span>insert<span class="Delimiter">(</span>result<span class="Delimiter">.</span>end<span class="Delimiter">(),</span> After_fragments[inst<span class="Delimiter">.</span>label]<span class="Delimiter">.</span>steps<span class="Delimiter">.</span>begin<span class="Delimiter">(),</span> After_fragments[inst<span class="Delimiter">.</span>label]<span class="Delimiter">.</span>steps<span class="Delimiter">.</span>end<span class="Delimiter">());</span>
<span class="Delimiter">}</span>
<span class="Delimiter">}</span>
<span class="CommentedCode">//? for (long long int i = 0; i < SIZE(result); ++i) { //? 1</span>
<span class="CommentedCode">//? cout << result.at(i).to_string() << '\n'; //? 1</span>
<span class="CommentedCode">//? } //? 1</span>
Recipe[r]<span class="Delimiter">.</span>steps<span class="Delimiter">.</span>swap<span class="Delimiter">(</span>result<span class="Delimiter">);</span>
<span class="Delimiter">}</span>
<span class="Delimiter">:(scenario tangle_before_and_after)</span>
recipe main [
<span class="Constant">1</span>:number<span class="Special"> <- </span>copy <span class="Constant">0</span>:literal
+label1
<span class="Constant">4</span>:number<span class="Special"> <- </span>copy <span class="Constant">0</span>:literal
]
before +label1 [
<span class="Constant">2</span>:number<span class="Special"> <- </span>copy <span class="Constant">0</span>:literal
]
after +label1 [
<span class="Constant">3</span>:number<span class="Special"> <- </span>copy <span class="Constant">0</span>:literal
]
<span class="traceContains">+mem: storing 0 in location 1</span>
<span class="traceContains">+mem: storing 0 in location 2</span>
<span class="Comment"># label1</span>
<span class="traceContains">+mem: storing 0 in location 3</span>
<span class="traceContains">+mem: storing 0 in location 4</span>
<span class="Comment"># nothing else</span>
$mem: <span class="Constant">4</span>
<span class="Delimiter">:(scenario tangle_keeps_labels_separate)</span>
recipe main [
<span class="Constant">1</span>:number<span class="Special"> <- </span>copy <span class="Constant">0</span>:literal
+label1
+label2
<span class="Constant">6</span>:number<span class="Special"> <- </span>copy <span class="Constant">0</span>:literal
]
before +label1 [
<span class="Constant">2</span>:number<span class="Special"> <- </span>copy <span class="Constant">0</span>:literal
]
after +label1 [
<span class="Constant">3</span>:number<span class="Special"> <- </span>copy <span class="Constant">0</span>:literal
]
before +label2 [
<span class="Constant">4</span>:number<span class="Special"> <- </span>copy <span class="Constant">0</span>:literal
]
after +label2 [
<span class="Constant">5</span>:number<span class="Special"> <- </span>copy <span class="Constant">0</span>:literal
]
<span class="traceContains">+mem: storing 0 in location 1</span>
<span class="traceContains">+mem: storing 0 in location 2</span>
<span class="Comment"># label1</span>
<span class="traceContains">+mem: storing 0 in location 3</span>
<span class="Comment"># 'after' fragments for earlier label always go before 'before' fragments for later label</span>
<span class="traceContains">+mem: storing 0 in location 4</span>
<span class="Comment"># label2</span>
<span class="traceContains">+mem: storing 0 in location 5</span>
<span class="traceContains">+mem: storing 0 in location 6</span>
<span class="Comment"># nothing else</span>
$mem: <span class="Constant">6</span>
<span class="Delimiter">:(scenario tangle_stacks_multiple_fragments)</span>
recipe main [
<span class="Constant">1</span>:number<span class="Special"> <- </span>copy <span class="Constant">0</span>:literal
+label1
<span class="Constant">6</span>:number<span class="Special"> <- </span>copy <span class="Constant">0</span>:literal
]
before +label1 [
<span class="Constant">2</span>:number<span class="Special"> <- </span>copy <span class="Constant">0</span>:literal
]
after +label1 [
<span class="Constant">3</span>:number<span class="Special"> <- </span>copy <span class="Constant">0</span>:literal
]
before +label1 [
<span class="Constant">4</span>:number<span class="Special"> <- </span>copy <span class="Constant">0</span>:literal
]
after +label1 [
<span class="Constant">5</span>:number<span class="Special"> <- </span>copy <span class="Constant">0</span>:literal
]
<span class="traceContains">+mem: storing 0 in location 1</span>
<span class="Comment"># 'before' fragments stack in order</span>
<span class="traceContains">+mem: storing 0 in location 2</span>
<span class="traceContains">+mem: storing 0 in location 4</span>
<span class="Comment"># label1</span>
<span class="Comment"># 'after' fragments stack in reverse order</span>
<span class="traceContains">+mem: storing 0 in location 5</span>
<span class="traceContains">+mem: storing 0 in location 3</span>
<span class="traceContains">+mem: storing 0 in location 6</span>
<span class="Comment"># nothing else</span>
$mem: <span class="Constant">6</span>
<span class="Delimiter">:(scenario tangle_supports_fragments_with_multiple_instructions)</span>
recipe main [
<span class="Constant">1</span>:number<span class="Special"> <- </span>copy <span class="Constant">0</span>:literal
+label1
<span class="Constant">6</span>:number<span class="Special"> <- </span>copy <span class="Constant">0</span>:literal
]
before +label1 [
<span class="Constant">2</span>:number<span class="Special"> <- </span>copy <span class="Constant">0</span>:literal
<span class="Constant">3</span>:number<span class="Special"> <- </span>copy <span class="Constant">0</span>:literal
]
after +label1 [
<span class="Constant">4</span>:number<span class="Special"> <- </span>copy <span class="Constant">0</span>:literal
<span class="Constant">5</span>:number<span class="Special"> <- </span>copy <span class="Constant">0</span>:literal
]
<span class="traceContains">+mem: storing 0 in location 1</span>
<span class="traceContains">+mem: storing 0 in location 2</span>
<span class="traceContains">+mem: storing 0 in location 3</span>
<span class="Comment"># label1</span>
<span class="traceContains">+mem: storing 0 in location 4</span>
<span class="traceContains">+mem: storing 0 in location 5</span>
<span class="traceContains">+mem: storing 0 in location 6</span>
<span class="Comment"># nothing else</span>
$mem: <span class="Constant">6</span>
<span class="Delimiter">:(scenario tangle_tangles_into_all_labels_with_same_name)</span>
recipe main [
<span class="Constant">1</span>:number<span class="Special"> <- </span>copy <span class="Constant">0</span>:literal
+label1
+label1
<span class="Constant">4</span>:number<span class="Special"> <- </span>copy <span class="Constant">0</span>:literal
]
before +label1 [
<span class="Constant">2</span>:number<span class="Special"> <- </span>copy <span class="Constant">0</span>:literal
]
after +label1 [
<span class="Constant">3</span>:number<span class="Special"> <- </span>copy <span class="Constant">0</span>:literal
]
<span class="traceContains">+mem: storing 0 in location 1</span>
<span class="traceContains">+mem: storing 0 in location 2</span>
<span class="Comment"># label1</span>
<span class="traceContains">+mem: storing 0 in location 3</span>
<span class="traceContains">+mem: storing 0 in location 2</span>
<span class="Comment"># label1</span>
<span class="traceContains">+mem: storing 0 in location 3</span>
<span class="traceContains">+mem: storing 0 in location 4</span>
<span class="Comment"># nothing else</span>
$mem: <span class="Constant">6</span>
</pre>
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