from libc.string cimport memcpy
from cpython.mem cimport PyMem_Malloc, PyMem_Free
# Compiler crashes on memory view coercion without this. Should report bug.
from cython.view cimport array as cvarray
cimport numpy as np
np.import_array()
import numpy
from ..lexeme cimport Lexeme
from ..parts_of_speech import UNIV_POS_NAMES
from ..attrs cimport LEMMA
from ..attrs cimport ID, ORTH, NORM, LOWER, SHAPE, PREFIX, SUFFIX, LENGTH, CLUSTER
from ..attrs cimport POS, LEMMA, TAG, DEP
from ..parts_of_speech cimport CONJ, PUNCT
from ..attrs cimport IS_ALPHA, IS_ASCII, IS_DIGIT, IS_LOWER, IS_PUNCT, IS_SPACE
from ..attrs cimport IS_TITLE, IS_UPPER, LIKE_URL, LIKE_NUM, LIKE_EMAIL, IS_STOP
from ..attrs cimport IS_OOV
from ..lexeme cimport Lexeme
cdef class Token:
"""An individual token --- i.e. a word, a punctuation symbol, etc. Created
via Doc.__getitem__ and Doc.__iter__.
"""
def __cinit__(self, Vocab vocab, Doc doc, int offset):
self.vocab = vocab
self.doc = doc
self.c = &self.doc.data[offset]
self.i = offset
self.array_len = doc.length
def __len__(self):
return self.c.lex.length
def __unicode__(self):
return self.string
def __str__(self):
return self.string
cpdef bint check_flag(self, attr_id_t flag_id) except -1:
return Lexeme.c_check_flag(self.c.lex, flag_id)
def nbor(self, int i=1):
return self.doc[self.i+i]
def similarity(self, other):
if self.vector_norm == 0 or other.vector_norm == 0:
return 0.0
return numpy.dot(self.vector, other.vector) / (self.vector_norm * other.vector_norm)
property lex_id:
def __get__(self):
return self.c.lex.id
property string:
def __get__(self):
cdef unicode orth = self.vocab.strings[self.c.lex.orth]
if self.c.spacy:
return orth + u' '
else:
return orth
property text:
def __get__(self):
return self.orth_
property text_with_ws:
def __get__(self):
cdef unicode orth = self.vocab.strings[self.c.lex.orth]
if self.c.spacy:
return orth + u' '
else:
return orth
property prob:
def __get__(self):
return self.c.lex.prob
property idx:
def __get__(self):
return self.c.idx
property cluster:
def __get__(self):
return self.c.lex.cluster
property orth:
def __get__(self):
return self.c.lex.orth
property lower:
def __get__(self):
return self.c.lex.lower
property norm:
def __get__(self):
return self.c.lex.norm
property shape:
def __get__(self):
return self.c.lex.shape
property prefix:
def __get__(self):
return self.c.lex.prefix
property suffix:
def __get__(self):
return self.c.lex.suffix
property lemma:
def __get__(self):
return self.c.lemma
property pos:
def __get__(self):
return self.c.pos
property tag:
def __get__(self):
return self.c.tag
property dep:
def __get__(self):
return self.c.dep
property has_vector:
def __get__(self):
cdef int i
for i in range(self.vocab.vectors_length):
if self.c.lex.repvec[i] != 0:
return True
else:
return False
property vector:
def __get__(self):
cdef int length = self.vocab.vectors_length
if length == 0:
raise ValueError(
"Word vectors set to length 0. This may be because the "
"data is not installed. If you haven't already, run"
"\npython -m spacy.en.download all\n"
"to install the data."
)
repvec_view = <float[:length,]>self.c.lex.repvec
return numpy.asarray(repvec_view)
property repvec:
def __get__(self):
return self.vector
property vector_norm:
def __get__(self):
return self.c.lex.l2_norm
property n_lefts:
def __get__(self):
cdef int n = 0
cdef const TokenC* ptr = self.c - self.i
while ptr != self.c:
if ptr + ptr.head == self.c:
n += 1
ptr += 1
return n
property n_rights:
def __get__(self):
cdef int n = 0
cdef const TokenC* ptr = self.c + (self.array_len - self.i)
while ptr != self.c:
if ptr + ptr.head == self.c:
n += 1
ptr -= 1
return n
property lefts:
def __get__(self):
"""The leftward immediate children of the word, in the syntactic
dependency parse.
"""
cdef const TokenC* ptr = self.c - (self.i - self.c.l_edge)
while ptr < self.c:
# If this head is still to the right of us, we can skip to it
# No token that's between this token and this head could be our
# child.
if (ptr.head >= 1) and (ptr + ptr.head) < self.c:
ptr += ptr.head
elif ptr + ptr.head == self.c:
yield self.doc[ptr - (self.c - self.i)]
ptr += 1
else:
ptr += 1
property rights:
def __get__(self):
"""The rightward immediate children of the word, in the syntactic
dependency parse."""
cdef const TokenC* ptr = self.c + (self.c.r_edge - self.i)
tokens = []
while ptr > self.c:
# If this head is still to the right of us, we can skip to it
# No token that's between this token and this head could be our
# child.
if (ptr.head < 0) and ((ptr + ptr.head) > self.c):
ptr += ptr.head
elif ptr + ptr.head == self.c:
tokens.append(self.doc[ptr - (self.c - self.i)])
ptr -= 1
else:
ptr -= 1
tokens.reverse()
for t in tokens:
yield t
property children:
def __get__(self):
yield from self.lefts
yield from self.rights
property subtree:
def __get__(self):
for word in self.lefts:
yield from word.subtree
yield self
for word in self.rights:
yield from word.subtree
property left_edge:
def __get__(self):
return self.doc[self.c.l_edge]
property right_edge:
def __get__(self):
return self.doc[self.c.r_edge]
property head:
def __get__(self):
"""The token predicted by the parser to be the head of the current token."""
return self.doc[self.i + self.c.head]
property conjuncts:
def __get__(self):
"""Get a list of conjoined words"""
cdef Token word
conjs = []
if self.c.pos != CONJ and self.c.pos != PUNCT:
seen_conj = False
for word in reversed(list(self.lefts)):
if word.c.pos == CONJ:
seen_conj = True
elif seen_conj and word.c.pos == self.c.pos:
conjs.append(word)
conjs.reverse()
conjs.append(self)
if seen_conj:
return conjs
elif self is not self.head and self in self.head.conjuncts:
return self.head.conjuncts
else:
return []
property ent_type:
def __get__(self):
return self.c.ent_type
property ent_iob:
def __get__(self):
return self.c.ent_iob
property ent_type_:
def __get__(self):
return self.vocab.strings[self.c.ent_type]
property ent_iob_:
def __get__(self):
iob_strings = ('', 'I', 'O', 'B')
return iob_strings[self.c.ent_iob]
property whitespace_:
def __get__(self):
return self.string[self.c.lex.length:]
property orth_:
def __get__(self):
return self.vocab.strings[self.c.lex.orth]
property lower_:
def __get__(self):
return self.vocab.strings[self.c.lex.lower]
property norm_:
def __get__(self):
return self.vocab.strings[self.c.lex.norm]
property shape_:
def __get__(self):
return self.vocab.strings[self.c.lex.shape]
property prefix_:
def __get__(self):
return self.vocab.strings[self.c.lex.prefix]
property suffix_:
def __get__(self):
return self.vocab.strings[self.c.lex.suffix]
property lemma_:
def __get__(self):
return self.vocab.strings[self.c.lemma]
property pos_:
def __get__(self):
return _pos_id_to_string[self.c.pos]
property tag_:
def __get__(self):
return self.vocab.strings[self.c.tag]
property dep_:
def __get__(self):
return self.vocab.strings[self.c.dep]
property is_oov:
def __get__(self): return Lexeme.c_check_flag(self.c.lex, IS_OOV)
property is_stop:
def __get__(self): return Lexeme.c_check_flag(self.c.lex, IS_STOP)
property is_alpha:
def __get__(self): return Lexeme.c_check_flag(self.c.lex, IS_ALPHA)
property is_ascii:
def __get__(self): return Lexeme.c_check_flag(self.c.lex, IS_ASCII)
property is_digit:
def __get__(self): return Lexeme.c_check_flag(self.c.lex, IS_DIGIT)
property is_lower:
def __get__(self): return Lexeme.c_check_flag(self.c.lex, IS_LOWER)
property is_title:
def __get__(self): return Lexeme.c_check_flag(self.c.lex, IS_TITLE)
property is_punct:
def __get__(self): return Lexeme.c_check_flag(self.c.lex, IS_PUNCT)
property is_space:
def __get__(self): return Lexeme.c_check_flag(self.c.lex, IS_SPACE)
property like_url:
def __get__(self): return Lexeme.c_check_flag(self.c.lex, LIKE_URL)
property like_num:
def __get__(self): return Lexeme.c_check_flag(self.c.lex, LIKE_NUM)
property like_email:
def __get__(self): return Lexeme.c_check_flag(self.c.lex, LIKE_EMAIL)
_pos_id_to_string = {id_: string for string, id_ in UNIV_POS_NAMES.items()}