mirror of https://github.com/explosion/spaCy.git
105 lines
2.5 KiB
Cython
105 lines
2.5 KiB
Cython
from libc.stdint cimport uint32_t
|
|
|
|
from cymem.cymem cimport Pool
|
|
|
|
from ..tokens cimport TokenC
|
|
|
|
|
|
cdef struct State:
|
|
TokenC* sent
|
|
int* stack
|
|
int i
|
|
int sent_len
|
|
int stack_len
|
|
|
|
|
|
cdef int add_dep(const State *s, const int head, const int child, const int label) except -1
|
|
|
|
|
|
cdef int pop_stack(State *s) except -1
|
|
cdef int push_stack(State *s) except -1
|
|
|
|
|
|
cdef bint has_head(const TokenC* t) nogil
|
|
|
|
|
|
cdef inline int get_idx(const State* s, const TokenC* t) nogil:
|
|
return t - s.sent
|
|
|
|
|
|
cdef inline TokenC* get_n0(const State* s) nogil:
|
|
return &s.sent[s.i]
|
|
|
|
|
|
cdef inline TokenC* get_n1(const State* s) nogil:
|
|
if (s.i+1) >= s.sent_len:
|
|
return NULL
|
|
else:
|
|
return &s.sent[s.i+1]
|
|
|
|
|
|
cdef inline TokenC* get_n2(const State* s) nogil:
|
|
if (s.i + 2) >= s.sent_len:
|
|
return NULL
|
|
else:
|
|
return &s.sent[s.i+2]
|
|
|
|
|
|
cdef inline TokenC* get_s0(const State *s) nogil:
|
|
return &s.sent[s.stack[0]]
|
|
|
|
|
|
cdef inline TokenC* get_s1(const State *s) nogil:
|
|
# Rely on our padding to ensure we don't go out of bounds here
|
|
return &s.sent[s.stack[-1]]
|
|
|
|
|
|
cdef inline TokenC* get_s2(const State *s) nogil:
|
|
# Rely on our padding to ensure we don't go out of bounds here
|
|
return &s.sent[s.stack[-2]]
|
|
|
|
cdef const TokenC* get_right(const State* s, const TokenC* head, const int idx) nogil
|
|
|
|
cdef const TokenC* get_left(const State* s, const TokenC* head, const int idx) nogil
|
|
|
|
cdef inline bint at_eol(const State *s) nogil:
|
|
return s.i >= s.sent_len
|
|
|
|
|
|
cdef inline bint is_final(const State *s) nogil:
|
|
return at_eol(s) # The stack will be attached to root anyway
|
|
|
|
|
|
cdef int children_in_buffer(const State *s, const int head, const int* gold) except -1
|
|
cdef int head_in_buffer(const State *s, const int child, const int* gold) except -1
|
|
cdef int children_in_stack(const State *s, const int head, const int* gold) except -1
|
|
cdef int head_in_stack(const State *s, const int child, const int* gold) except -1
|
|
|
|
cdef State* init_state(Pool mem, TokenC* sent, const int sent_length) except NULL
|
|
|
|
|
|
cdef int count_left_kids(const TokenC* head) nogil
|
|
|
|
|
|
cdef int count_right_kids(const TokenC* head) nogil
|
|
|
|
|
|
# From https://en.wikipedia.org/wiki/Hamming_weight
|
|
cdef inline uint32_t _popcount(uint32_t x) nogil:
|
|
"""Find number of non-zero bits."""
|
|
cdef int count = 0
|
|
while x != 0:
|
|
x &= x - 1
|
|
count += 1
|
|
return count
|
|
|
|
|
|
cdef inline uint32_t _nth_significant_bit(uint32_t bits, int n) nogil:
|
|
cdef int i
|
|
for i in range(32):
|
|
if bits & (1 << i):
|
|
n -= 1
|
|
if n < 1:
|
|
return i
|
|
return 0
|