diff options
Diffstat (limited to 'source/blender/blenlib/BLI_map.hh')
| -rw-r--r-- | source/blender/blenlib/BLI_map.hh | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/source/blender/blenlib/BLI_map.hh b/source/blender/blenlib/BLI_map.hh index 95afbfc2ec6..4d254960f34 100644 --- a/source/blender/blenlib/BLI_map.hh +++ b/source/blender/blenlib/BLI_map.hh @@ -605,6 +605,37 @@ class Map { } /** + * Returns the key that is stored in the set that compares equal to the given key. This invokes + * undefined behavior when the key is not in the map. + */ + const Key &lookup_key(const Key &key) const + { + return this->lookup_key_as(key); + } + template<typename ForwardKey> const Key &lookup_key_as(const ForwardKey &key) const + { + const Slot &slot = this->lookup_slot(key, hash_(key)); + return *slot.key(); + } + + /** + * Returns a pointer to the key that is stored in the map that compares equal to the given key. + * If the key is not in the map, null is returned. + */ + const Key *lookup_key_ptr(const Key &key) const + { + return this->lookup_key_ptr_as(key); + } + template<typename ForwardKey> const Key *lookup_key_ptr_as(const ForwardKey &key) const + { + const Slot *slot = this->lookup_slot_ptr(key, hash_(key)); + if (slot == nullptr) { + return nullptr; + } + return slot->key(); + } + + /** * Calls the provided callback for every key-value-pair in the map. The callback is expected * to take a `const Key &` as first and a `const Value &` as second parameter. */ |