mirror of
https://github.com/explosion/spaCy.git
synced 2024-11-14 21:57:15 +03:00
e2b70df012
* Use isort with Black profile * isort all the things * Fix import cycles as a result of import sorting * Add DOCBIN_ALL_ATTRS type definition * Add isort to requirements * Remove isort from build dependencies check * Typo
95 lines
3.4 KiB
Cython
95 lines
3.4 KiB
Cython
from libc.stdint cimport uint32_t, uint64_t
|
|
from libcpp.unordered_map cimport unordered_map
|
|
from libcpp.vector cimport vector
|
|
|
|
from ...strings cimport StringStore
|
|
from ...typedefs cimport attr_t, hash_t, len_t
|
|
|
|
|
|
cdef extern from "<algorithm>" namespace "std" nogil:
|
|
void swap[T](T& a, T& b) except + # Only available in Cython 3.
|
|
|
|
# An edit tree (Müller et al., 2015) is a tree structure that consists of
|
|
# edit operations. The two types of operations are string matches
|
|
# and string substitutions. Given an input string s and an output string t,
|
|
# subsitution and match nodes should be interpreted as follows:
|
|
#
|
|
# * Substitution node: consists of an original string and substitute string.
|
|
# If s matches the original string, then t is the substitute. Otherwise,
|
|
# the node does not apply.
|
|
# * Match node: consists of a prefix length, suffix length, prefix edit tree,
|
|
# and suffix edit tree. If s is composed of a prefix, middle part, and suffix
|
|
# with the given suffix and prefix lengths, then t is the concatenation
|
|
# prefix_tree(prefix) + middle + suffix_tree(suffix).
|
|
#
|
|
# For efficiency, we represent strings in substitution nodes as integers, with
|
|
# the actual strings stored in a StringStore. Subtrees in match nodes are stored
|
|
# as tree identifiers (rather than pointers) to simplify serialization.
|
|
|
|
cdef uint32_t NULL_TREE_ID
|
|
|
|
cdef struct MatchNodeC:
|
|
len_t prefix_len
|
|
len_t suffix_len
|
|
uint32_t prefix_tree
|
|
uint32_t suffix_tree
|
|
|
|
cdef struct SubstNodeC:
|
|
attr_t orig
|
|
attr_t subst
|
|
|
|
cdef union NodeC:
|
|
MatchNodeC match_node
|
|
SubstNodeC subst_node
|
|
|
|
cdef struct EditTreeC:
|
|
bint is_match_node
|
|
NodeC inner
|
|
|
|
cdef inline EditTreeC edittree_new_match(len_t prefix_len, len_t suffix_len,
|
|
uint32_t prefix_tree, uint32_t suffix_tree):
|
|
cdef MatchNodeC match_node = MatchNodeC(prefix_len=prefix_len,
|
|
suffix_len=suffix_len, prefix_tree=prefix_tree,
|
|
suffix_tree=suffix_tree)
|
|
cdef NodeC inner = NodeC(match_node=match_node)
|
|
return EditTreeC(is_match_node=True, inner=inner)
|
|
|
|
cdef inline EditTreeC edittree_new_subst(attr_t orig, attr_t subst):
|
|
cdef EditTreeC node
|
|
cdef SubstNodeC subst_node = SubstNodeC(orig=orig, subst=subst)
|
|
cdef NodeC inner = NodeC(subst_node=subst_node)
|
|
return EditTreeC(is_match_node=False, inner=inner)
|
|
|
|
cdef inline uint64_t edittree_hash(EditTreeC tree):
|
|
cdef MatchNodeC match_node
|
|
cdef SubstNodeC subst_node
|
|
|
|
if tree.is_match_node:
|
|
match_node = tree.inner.match_node
|
|
return hash((match_node.prefix_len, match_node.suffix_len, match_node.prefix_tree, match_node.suffix_tree))
|
|
else:
|
|
subst_node = tree.inner.subst_node
|
|
return hash((subst_node.orig, subst_node.subst))
|
|
|
|
cdef struct LCS:
|
|
int source_begin
|
|
int source_end
|
|
int target_begin
|
|
int target_end
|
|
|
|
cdef inline bint lcs_is_empty(LCS lcs):
|
|
return lcs.source_begin == 0 and lcs.source_end == 0 and lcs.target_begin == 0 and lcs.target_end == 0
|
|
|
|
cdef class EditTrees:
|
|
cdef vector[EditTreeC] trees
|
|
cdef unordered_map[hash_t, uint32_t] map
|
|
cdef StringStore strings
|
|
|
|
cpdef uint32_t add(self, str form, str lemma)
|
|
cpdef str apply(self, uint32_t tree_id, str form)
|
|
cpdef unicode tree_to_str(self, uint32_t tree_id)
|
|
|
|
cdef uint32_t _add(self, str form, str lemma)
|
|
cdef _apply(self, uint32_t tree_id, str form_part, list lemma_pieces)
|
|
cdef uint32_t _tree_id(self, EditTreeC tree)
|