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