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<span class="Comment">//: Allow code for recipes to be pulled in from multiple places and inserted</span>
<span class="Comment">//: at special labels called 'waypoints'. Unlike jump targets, a recipe can</span>
<span class="Comment">//: have multiple ambiguous waypoints with the same name. Any 'before' and</span>
<span class="Comment">//: 'after' fragments will simply be inserted at all applicable waypoints.</span>
<span class="Comment">//: Waypoints are always surrounded by '<>', e.g. <handle-request>.</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>
<label1>
<span class="Constant">3</span>:number<span class="Special"> <- </span>copy <span class="Constant">0</span>
]
before <label1> [
<span class="Constant">2</span>:number<span class="Special"> <- </span>copy <span class="Constant">0</span>
]
<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>
set<string <span class="Comment">/*</span><span class="Comment">label</span><span class="Comment">*/</span>> Fragments_used<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>
Fragments_used<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<span class="Delimiter">;</span>
slurp_body<span class="Delimiter">(</span>in<span class="Delimiter">,</span> tmp<span class="Delimiter">);</span>
if <span class="Delimiter">(</span>is_waypoint<span class="Delimiter">(</span>label<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>
else
raise_error << <span class="Constant">"can't tangle before label "</span> << label << <span class="cSpecial">'\n'</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<span class="Delimiter">;</span>
slurp_body<span class="Delimiter">(</span>in<span class="Delimiter">,</span> tmp<span class="Delimiter">);</span>
if <span class="Delimiter">(</span>is_waypoint<span class="Delimiter">(</span>label<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>
else
raise_error << <span class="Constant">"can't tangle after label "</span> << label << <span class="cSpecial">'\n'</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 "Begin Instruction Inserting/Deleting Transforms")</span>
Transform<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>insert_fragments<span class="Delimiter">);</span> <span class="Comment">// NOT idempotent</span>
<span class="Comment">//: We might need to perform multiple passes, in case inserted fragments</span>
<span class="Comment">//: include more labels that need further insertions. Track which labels we've</span>
<span class="Comment">//: already processed using an extra field.</span>
<span class="Delimiter">:(before "End instruction Fields")</span>
mutable bool tangle_done<span class="Delimiter">;</span>
<span class="Delimiter">:(before "End instruction Constructor")</span>
tangle_done = <span class="Constant">false</span><span class="Delimiter">;</span>
<span class="Delimiter">:(code)</span>
void insert_fragments<span class="Delimiter">(</span>const recipe_ordinal r<span class="Delimiter">)</span> <span class="Delimiter">{</span>
bool made_progress = <span class="Constant">true</span><span class="Delimiter">;</span>
long long int pass = <span class="Constant">0</span><span class="Delimiter">;</span>
while <span class="Delimiter">(</span>made_progress<span class="Delimiter">)</span> <span class="Delimiter">{</span>
made_progress = <span class="Constant">false</span><span class="Delimiter">;</span>
<span class="Comment">// create a new vector because insertions invalidate iterators</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>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>steps<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
const instruction& inst = get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> 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 || !is_waypoint<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>label<span class="Delimiter">)</span> || inst<span class="Delimiter">.</span>tangle_done<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>
inst<span class="Delimiter">.</span>tangle_done = <span class="Constant">true</span><span class="Delimiter">;</span>
made_progress = <span class="Constant">true</span><span class="Delimiter">;</span>
Fragments_used<span class="Delimiter">.</span>insert<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>label<span class="Delimiter">);</span>
ostringstream prefix<span class="Delimiter">;</span>
prefix << <span class="Constant">'+'</span> << get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name << <span class="Constant">'_'</span> << pass << <span class="Constant">'_'</span> << i<span class="Delimiter">;</span>
if <span class="Delimiter">(</span>contains_key<span class="Delimiter">(</span>Before_fragments<span class="Delimiter">,</span> inst<span class="Delimiter">.</span>label<span class="Delimiter">))</span> <span class="Delimiter">{</span>
append_fragment<span class="Delimiter">(</span>result<span class="Delimiter">,</span> Before_fragments[inst<span class="Delimiter">.</span>label]<span class="Delimiter">.</span>steps<span class="Delimiter">,</span> prefix<span class="Delimiter">.</span>str<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>contains_key<span class="Delimiter">(</span>After_fragments<span class="Delimiter">,</span> inst<span class="Delimiter">.</span>label<span class="Delimiter">))</span> <span class="Delimiter">{</span>
append_fragment<span class="Delimiter">(</span>result<span class="Delimiter">,</span> After_fragments[inst<span class="Delimiter">.</span>label]<span class="Delimiter">.</span>steps<span class="Delimiter">,</span> prefix<span class="Delimiter">.</span>str<span class="Delimiter">());</span>
<span class="Delimiter">}</span>
<span class="Delimiter">}</span>
get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>steps<span class="Delimiter">.</span>swap<span class="Delimiter">(</span>result<span class="Delimiter">);</span>
++pass<span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Delimiter">}</span>
void append_fragment<span class="Delimiter">(</span>vector<instruction>& base<span class="Delimiter">,</span> const vector<instruction>& patch<span class="Delimiter">,</span> const string prefix<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Comment">// append 'patch' to 'base' while keeping 'base' oblivious to any new jump</span>
<span class="Comment">// targets in 'patch' oblivious to 'base' by prepending 'prefix' to them.</span>
<span class="Comment">// we might tangle the same fragment at multiple points in a single recipe,</span>
<span class="Comment">// and we need to avoid duplicate jump targets.</span>
<span class="Comment">// so we'll keep jump targets local to the specific before/after fragment</span>
<span class="Comment">// that introduces them.</span>
set<string> jump_targets<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>patch<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
const instruction& inst = patch<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 && is_jump_target<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>label<span class="Delimiter">))</span>
jump_targets<span class="Delimiter">.</span>insert<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>label<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>patch<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
instruction inst = patch<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>
if <span class="Delimiter">(</span>contains_key<span class="Delimiter">(</span>jump_targets<span class="Delimiter">,</span> inst<span class="Delimiter">.</span>label<span class="Delimiter">))</span>
inst<span class="Delimiter">.</span>label = prefix+inst<span class="Delimiter">.</span>label<span class="Delimiter">;</span>
base<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>
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>ingredients<span class="Delimiter">);</span> ++j<span class="Delimiter">)</span> <span class="Delimiter">{</span>
reagent& x = inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>j<span class="Delimiter">);</span>
if <span class="Delimiter">(</span>!is_literal<span class="Delimiter">(</span>x<span class="Delimiter">))</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>
if <span class="Delimiter">(</span>x<span class="Delimiter">.</span>properties<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>second<span class="Delimiter">-></span>value == <span class="Constant">"label"</span> && contains_key<span class="Delimiter">(</span>jump_targets<span class="Delimiter">,</span> x<span class="Delimiter">.</span>name<span class="Delimiter">))</span>
x<span class="Delimiter">.</span>name = prefix+x<span class="Delimiter">.</span>name<span class="Delimiter">;</span>
<span class="Delimiter">}</span>
base<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>inst<span class="Delimiter">);</span>
<span class="Delimiter">}</span>
<span class="Delimiter">}</span>
bool is_waypoint<span class="Delimiter">(</span>string label<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Identifier">return</span> *label<span class="Delimiter">.</span>begin<span class="Delimiter">()</span> == <span class="Constant">'<'</span> && *label<span class="Delimiter">.</span>rbegin<span class="Delimiter">()</span> == <span class="Constant">'>'</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Comment">//: complain about unapplied fragments</span>
<span class="Delimiter">:(before "End Globals")</span>
bool Transform_check_insert_fragments_Ran = <span class="Constant">false</span><span class="Delimiter">;</span>
<span class="Delimiter">:(after "Transform.push_back(insert_fragments)")</span>
Transform<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>check_insert_fragments<span class="Delimiter">);</span> <span class="Comment">// idempotent</span>
<span class="Delimiter">:(code)</span>
void check_insert_fragments<span class="Delimiter">(</span>unused recipe_ordinal<span class="Delimiter">)</span> <span class="Delimiter">{</span>
if <span class="Delimiter">(</span>Transform_check_insert_fragments_Ran<span class="Delimiter">)</span> <span class="Identifier">return</span><span class="Delimiter">;</span>
Transform_check_insert_fragments_Ran = <span class="Constant">true</span><span class="Delimiter">;</span>
for <span class="Delimiter">(</span>map<string<span class="Delimiter">,</span> recipe>::iterator p = Before_fragments<span class="Delimiter">.</span>begin<span class="Delimiter">();</span> p != Before_fragments<span class="Delimiter">.</span>end<span class="Delimiter">();</span> ++p<span class="Delimiter">)</span> <span class="Delimiter">{</span>
if <span class="Delimiter">(</span>!contains_key<span class="Delimiter">(</span>Fragments_used<span class="Delimiter">,</span> p<span class="Delimiter">-></span>first<span class="Delimiter">))</span>
raise_error << <span class="Constant">"could not locate insert before "</span> << p<span class="Delimiter">-></span>first << <span class="cSpecial">'\n'</span> << end<span class="Delimiter">();</span>
<span class="Delimiter">}</span>
for <span class="Delimiter">(</span>map<string<span class="Delimiter">,</span> recipe>::iterator p = After_fragments<span class="Delimiter">.</span>begin<span class="Delimiter">();</span> p != After_fragments<span class="Delimiter">.</span>end<span class="Delimiter">();</span> ++p<span class="Delimiter">)</span> <span class="Delimiter">{</span>
if <span class="Delimiter">(</span>!contains_key<span class="Delimiter">(</span>Fragments_used<span class="Delimiter">,</span> p<span class="Delimiter">-></span>first<span class="Delimiter">))</span>
raise_error << <span class="Constant">"could not locate insert after "</span> << p<span class="Delimiter">-></span>first << <span class="cSpecial">'\n'</span> << end<span class="Delimiter">();</span>
<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>
<label1>
<span class="Constant">4</span>:number<span class="Special"> <- </span>copy <span class="Constant">0</span>
]
before <label1> [
<span class="Constant">2</span>:number<span class="Special"> <- </span>copy <span class="Constant">0</span>
]
after <label1> [
<span class="Constant">3</span>:number<span class="Special"> <- </span>copy <span class="Constant">0</span>
]
<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_ignores_jump_target)</span>
<span class="Special">% Hide_errors = true;</span>
recipe main [
<span class="Constant">1</span>:number<span class="Special"> <- </span>copy <span class="Constant">0</span>
+label1
<span class="Constant">4</span>:number<span class="Special"> <- </span>copy <span class="Constant">0</span>
]
before +label1 [
<span class="Constant">2</span>:number<span class="Special"> <- </span>copy <span class="Constant">0</span>
]
<span class="traceContains">+error: can't tangle before label +label1</span>
<span class="traceContains">+mem: storing 0 in location 1</span>
<span class="traceContains">+mem: storing 0 in location 4</span>
<span class="Comment"># label1</span>
<span class="traceAbsent">-mem: storing 0 in location 2</span>
<span class="Comment"># nothing else</span>
$mem: <span class="Constant">2</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>
<label1>
<label2>
<span class="Constant">6</span>:number<span class="Special"> <- </span>copy <span class="Constant">0</span>
]
before <label1> [
<span class="Constant">2</span>:number<span class="Special"> <- </span>copy <span class="Constant">0</span>
]
after <label1> [
<span class="Constant">3</span>:number<span class="Special"> <- </span>copy <span class="Constant">0</span>
]
before <label2> [
<span class="Constant">4</span>:number<span class="Special"> <- </span>copy <span class="Constant">0</span>
]
after <label2> [
<span class="Constant">5</span>:number<span class="Special"> <- </span>copy <span class="Constant">0</span>
]
<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>
<label1>
<span class="Constant">6</span>:number<span class="Special"> <- </span>copy <span class="Constant">0</span>
]
before <label1> [
<span class="Constant">2</span>:number<span class="Special"> <- </span>copy <span class="Constant">0</span>
]
after <label1> [
<span class="Constant">3</span>:number<span class="Special"> <- </span>copy <span class="Constant">0</span>
]
before <label1> [
<span class="Constant">4</span>:number<span class="Special"> <- </span>copy <span class="Constant">0</span>
]
after <label1> [
<span class="Constant">5</span>:number<span class="Special"> <- </span>copy <span class="Constant">0</span>
]
<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>
<label1>
<span class="Constant">6</span>:number<span class="Special"> <- </span>copy <span class="Constant">0</span>
]
before <label1> [
<span class="Constant">2</span>:number<span class="Special"> <- </span>copy <span class="Constant">0</span>
<span class="Constant">3</span>:number<span class="Special"> <- </span>copy <span class="Constant">0</span>
]
after <label1> [
<span class="Constant">4</span>:number<span class="Special"> <- </span>copy <span class="Constant">0</span>
<span class="Constant">5</span>:number<span class="Special"> <- </span>copy <span class="Constant">0</span>
]
<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">10</span>
<label1>
<span class="Constant">4</span>:number<span class="Special"> <- </span>copy <span class="Constant">10</span>
recipe2
]
recipe recipe2 [
<span class="Constant">1</span>:number<span class="Special"> <- </span>copy <span class="Constant">11</span>
<label1>
<span class="Constant">4</span>:number<span class="Special"> <- </span>copy <span class="Constant">11</span>
]
before <label1> [
<span class="Constant">2</span>:number<span class="Special"> <- </span>copy <span class="Constant">12</span>
]
after <label1> [
<span class="Constant">3</span>:number<span class="Special"> <- </span>copy <span class="Constant">12</span>
]
<span class="traceContains">+mem: storing 10 in location 1</span>
<span class="traceContains">+mem: storing 12 in location 2</span>
<span class="Comment"># label1</span>
<span class="traceContains">+mem: storing 12 in location 3</span>
<span class="traceContains">+mem: storing 10 in location 4</span>
<span class="Comment"># recipe2</span>
<span class="traceContains">+mem: storing 11 in location 1</span>
<span class="traceContains">+mem: storing 12 in location 2</span>
<span class="Comment"># label1</span>
<span class="traceContains">+mem: storing 12 in location 3</span>
<span class="traceContains">+mem: storing 11 in location 4</span>
<span class="Comment"># nothing else</span>
$mem: <span class="Constant">8</span>
<span class="Delimiter">:(scenario tangle_tangles_into_all_labels_with_same_name_2)</span>
recipe main [
<span class="Constant">1</span>:number<span class="Special"> <- </span>copy <span class="Constant">10</span>
<label1>
<label1>
<span class="Constant">4</span>:number<span class="Special"> <- </span>copy <span class="Constant">10</span>
]
before <label1> [
<span class="Constant">2</span>:number<span class="Special"> <- </span>copy <span class="Constant">12</span>
]
after <label1> [
<span class="Constant">3</span>:number<span class="Special"> <- </span>copy <span class="Constant">12</span>
]
<span class="traceContains">+mem: storing 10 in location 1</span>
<span class="traceContains">+mem: storing 12 in location 2</span>
<span class="Comment"># label1</span>
<span class="traceContains">+mem: storing 12 in location 3</span>
<span class="traceContains">+mem: storing 12 in location 2</span>
<span class="Comment"># label1</span>
<span class="traceContains">+mem: storing 12 in location 3</span>
<span class="traceContains">+mem: storing 10 in location 4</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_3)</span>
recipe main [
<span class="Constant">1</span>:number<span class="Special"> <- </span>copy <span class="Constant">10</span>
<label1>
<foo>
<span class="Constant">4</span>:number<span class="Special"> <- </span>copy <span class="Constant">10</span>
]
before <label1> [
<span class="Constant">2</span>:number<span class="Special"> <- </span>copy <span class="Constant">12</span>
]
after <label1> [
<span class="Constant">3</span>:number<span class="Special"> <- </span>copy <span class="Constant">12</span>
]
after <foo> [
<label1>
]
<span class="traceContains">+mem: storing 10 in location 1</span>
<span class="traceContains">+mem: storing 12 in location 2</span>
<span class="Comment"># label1</span>
<span class="traceContains">+mem: storing 12 in location 3</span>
<span class="traceContains">+mem: storing 12 in location 2</span>
<span class="Comment"># foo/label1</span>
<span class="traceContains">+mem: storing 12 in location 3</span>
<span class="traceContains">+mem: storing 10 in location 4</span>
<span class="Comment"># nothing else</span>
$mem: <span class="Constant">6</span>
<span class="Delimiter">:(scenario tangle_handles_jump_target_inside_fragment)</span>
recipe main [
<span class="Constant">1</span>:number<span class="Special"> <- </span>copy <span class="Constant">10</span>
<label1>
<span class="Constant">4</span>:number<span class="Special"> <- </span>copy <span class="Constant">10</span>
]
before <label1> [
jump +label2:label
<span class="Constant">2</span>:number<span class="Special"> <- </span>copy <span class="Constant">12</span>
+label2
<span class="Constant">3</span>:number<span class="Special"> <- </span>copy <span class="Constant">12</span>
]
<span class="traceContains">+mem: storing 10 in location 1</span>
<span class="Comment"># label1</span>
<span class="traceContains">+mem: storing 12 in location 3</span>
<span class="traceContains">+mem: storing 10 in location 4</span>
<span class="Comment"># ignored by jump</span>
<span class="traceAbsent">-mem: storing 12 in label 2</span>
<span class="Comment"># nothing else</span>
$mem: <span class="Constant">3</span>
<span class="Delimiter">:(scenario tangle_renames_jump_target)</span>
recipe main [
<span class="Constant">1</span>:number<span class="Special"> <- </span>copy <span class="Constant">10</span>
<label1>
+label2
<span class="Constant">4</span>:number<span class="Special"> <- </span>copy <span class="Constant">10</span>
]
before <label1> [
jump +label2:label
<span class="Constant">2</span>:number<span class="Special"> <- </span>copy <span class="Constant">12</span>
+label2 <span class="Comment"># renamed</span>
<span class="Constant">3</span>:number<span class="Special"> <- </span>copy <span class="Constant">12</span>
]
<span class="traceContains">+mem: storing 10 in location 1</span>
<span class="Comment"># label1</span>
<span class="traceContains">+mem: storing 12 in location 3</span>
<span class="traceContains">+mem: storing 10 in location 4</span>
<span class="Comment"># ignored by jump</span>
<span class="traceAbsent">-mem: storing 12 in label 2</span>
<span class="Comment"># nothing else</span>
$mem: <span class="Constant">3</span>
<span class="Delimiter">:(scenario tangle_jump_to_base_recipe)</span>
recipe main [
<span class="Constant">1</span>:number<span class="Special"> <- </span>copy <span class="Constant">10</span>
<label1>
+label2
<span class="Constant">4</span>:number<span class="Special"> <- </span>copy <span class="Constant">10</span>
]
before <label1> [
jump +label2:label
<span class="Constant">2</span>:number<span class="Special"> <- </span>copy <span class="Constant">12</span>
<span class="Constant">3</span>:number<span class="Special"> <- </span>copy <span class="Constant">12</span>
]
<span class="traceContains">+mem: storing 10 in location 1</span>
<span class="Comment"># label1</span>
<span class="traceContains">+mem: storing 10 in location 4</span>
<span class="Comment"># ignored by jump</span>
<span class="traceAbsent">-mem: storing 12 in label 2</span>
<span class="traceAbsent">-mem: storing 12 in location 3</span>
<span class="Comment"># nothing else</span>
$mem: <span class="Constant">2</span>
</pre>
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