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https://github.com/explosion/spaCy.git
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67 lines
1.9 KiB
Cython
67 lines
1.9 KiB
Cython
# cython: profile=True
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'''Serve pointers to Lexeme structs, given strings. Maintain a reverse index,
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so that strings can be retrieved from hashes. Use 64-bit hash values and
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boldly assume no collisions.
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'''
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from __future__ import unicode_literals
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from libc.stdlib cimport malloc, calloc, free
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from libc.stdint cimport uint64_t
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from libcpp.vector cimport vector
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from spacy.string_tools cimport substr
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from . import util
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cimport spacy
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cdef class English(spacy.Language):
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cdef int find_split(self, unicode word):
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cdef size_t length = len(word)
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cdef int i = 0
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if word.startswith("'s") or word.startswith("'S"):
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return 2
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# Contractions
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if word.endswith("'s") and length >= 3:
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return length - 2
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# Leading punctuation
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if is_punct(word, 0, length):
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return 1
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elif length >= 1:
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# Split off all trailing punctuation characters
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i = 0
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while i < length and not is_punct(word, i, length):
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i += 1
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return i
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cdef bint is_punct(unicode word, size_t i, size_t length):
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# Don't count appostrophes as punct if the next char is a letter
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if word[i] == "'" and i < (length - 1) and word[i+1].isalpha():
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return i == 0
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if word[i] == "-" and i < (length - 1) and word[i+1] == '-':
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return False
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# Don't count commas as punct if the next char is a number
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if word[i] == "," and i < (length - 1) and word[i+1].isdigit():
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return False
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# Don't count periods as punct if the next char is not whitespace
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if word[i] == "." and i < (length - 1) and not word[i+1].isspace():
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return False
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return not word[i].isalnum()
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EN = English('en')
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cpdef Tokens tokenize(unicode string):
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return EN.tokenize(string)
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cpdef Lexeme_addr lookup(unicode string) except 0:
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return <Lexeme_addr>EN.lookup(string)
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cpdef unicode unhash(StringHash hash_value):
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return EN.unhash(hash_value)
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