traxys/tree-sitter
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Remove ItemSet class; just use a set

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This commit is contained in:
Max Brunsfeld 2014-01-13 18:47:57 -08:00
parent 29f73afbc5
commit d015d57a53
11 changed files with 93 additions and 162 deletions
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18
src/compiler/build_tables/item_set_closure.cpp
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@ -8,25 +8,25 @@ using std::vector;
namespace tree_sitter {
namespace build_tables {
static bool vector_contains(vector<Item> items, build_tables::Item item) {
static bool contains(ItemSet items, Item item) {
return (std::find(items.begin(), items.end(), item) != items.end());
}
static void add_item(vector<Item> &vector, const Item &item, const Grammar &grammar) {
if (!vector_contains(vector, item)) {
vector.push_back(item);
static void add_item(ItemSet &item_set, const Item &item, const Grammar &grammar) {
if (!contains(item_set, item)) {
item_set.insert(item);
for (rules::Symbol rule : next_non_terminals(item, grammar)) {
Item next_item = Item::at_beginning_of_rule(rule.name, grammar);
add_item(vector, next_item, grammar);
add_item(item_set, next_item, grammar);
}
}
}
ItemSet item_set_closure(const ItemSet &item_set, const Grammar &grammar) {
vector<Item> items;
const ItemSet item_set_closure(const ItemSet &item_set, const Grammar &grammar) {
ItemSet result;
for (Item item : item_set)
add_item(items, item, grammar);
return ItemSet(items);
add_item(result, item, grammar);
return result;
}
}
}