mirror of
https://github.com/explosion/spaCy.git
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3b67eabfea
Often patterns need to match "any token". A clean way to denote this
is with the empty dict {}: this sets no constraints on the token,
so should always match.
The problem was that having attributes length==0 was used as an
end-of-array signal, so the matcher didn't handle this case correctly.
This patch compiles empty token spec dicts into a constraint
NULL_ATTR==0. The NULL_ATTR attribute, 0, is always set to 0 on the
lexeme -- so this always matches.
168 lines
5.1 KiB
Python
168 lines
5.1 KiB
Python
# coding: utf-8
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from __future__ import unicode_literals
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from ..matcher import Matcher, PhraseMatcher
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from .util import get_doc
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import pytest
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@pytest.fixture
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def matcher(en_vocab):
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rules = {
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'JS': [[{'ORTH': 'JavaScript'}]],
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'GoogleNow': [[{'ORTH': 'Google'}, {'ORTH': 'Now'}]],
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'Java': [[{'LOWER': 'java'}]]
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}
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matcher = Matcher(en_vocab)
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for key, patterns in rules.items():
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matcher.add(key, None, *patterns)
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return matcher
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def test_matcher_from_api_docs(en_vocab):
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matcher = Matcher(en_vocab)
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pattern = [{'ORTH': 'test'}]
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assert len(matcher) == 0
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matcher.add('Rule', None, pattern)
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assert len(matcher) == 1
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matcher.remove('Rule')
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assert 'Rule' not in matcher
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matcher.add('Rule', None, pattern)
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assert 'Rule' in matcher
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on_match, patterns = matcher.get('Rule')
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assert len(patterns[0])
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def test_matcher_from_usage_docs(en_vocab):
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text = "Wow 😀 This is really cool! 😂 😂"
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doc = get_doc(en_vocab, words=text.split(' '))
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pos_emoji = [u'😀', u'😃', u'😂', u'🤣', u'😊', u'😍']
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pos_patterns = [[{'ORTH': emoji}] for emoji in pos_emoji]
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def label_sentiment(matcher, doc, i, matches):
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match_id, start, end = matches[i]
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if doc.vocab.strings[match_id] == 'HAPPY':
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doc.sentiment += 0.1
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span = doc[start : end]
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token = span.merge()
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token.vocab[token.text].norm_ = 'happy emoji'
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matcher = Matcher(en_vocab)
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matcher.add('HAPPY', label_sentiment, *pos_patterns)
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matches = matcher(doc)
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assert doc.sentiment != 0
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assert doc[1].norm_ == 'happy emoji'
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@pytest.mark.parametrize('words', [["Some", "words"]])
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def test_matcher_init(en_vocab, words):
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matcher = Matcher(en_vocab)
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doc = get_doc(en_vocab, words)
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assert len(matcher) == 0
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assert matcher(doc) == []
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def test_matcher_no_match(matcher):
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words = ["I", "like", "cheese", "."]
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doc = get_doc(matcher.vocab, words)
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assert matcher(doc) == []
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def test_matcher_compile(matcher):
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assert len(matcher) == 3
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def test_matcher_match_start(matcher):
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words = ["JavaScript", "is", "good"]
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doc = get_doc(matcher.vocab, words)
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assert matcher(doc) == [(matcher.vocab.strings['JS'], 0, 1)]
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def test_matcher_match_end(matcher):
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words = ["I", "like", "java"]
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doc = get_doc(matcher.vocab, words)
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assert matcher(doc) == [(doc.vocab.strings['Java'], 2, 3)]
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def test_matcher_match_middle(matcher):
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words = ["I", "like", "Google", "Now", "best"]
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doc = get_doc(matcher.vocab, words)
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assert matcher(doc) == [(doc.vocab.strings['GoogleNow'], 2, 4)]
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def test_matcher_match_multi(matcher):
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words = ["I", "like", "Google", "Now", "and", "java", "best"]
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doc = get_doc(matcher.vocab, words)
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assert matcher(doc) == [(doc.vocab.strings['GoogleNow'], 2, 4),
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(doc.vocab.strings['Java'], 5, 6)]
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def test_matcher_empty_dict(en_vocab):
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'''Test matcher allows empty token specs, meaning match on any token.'''
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matcher = Matcher(en_vocab)
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abc = ["a", "b", "c"]
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doc = get_doc(matcher.vocab, abc)
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matcher.add('A.C', None, [{'ORTH': 'a'}, {}, {'ORTH': 'c'}])
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matches = matcher(doc)
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assert len(matches) == 1
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assert matches[0][1:] == (0, 3)
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matcher.add('A.', None, [{'ORTH': 'a'}, {}])
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matches = matcher(doc)
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assert matches[0][1:] == (0, 2)
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def test_matcher_phrase_matcher(en_vocab):
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words = ["Google", "Now"]
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doc = get_doc(en_vocab, words)
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matcher = PhraseMatcher(en_vocab)
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matcher.add('COMPANY', None, doc)
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words = ["I", "like", "Google", "Now", "best"]
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doc = get_doc(en_vocab, words)
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assert len(matcher(doc)) == 1
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def test_matcher_match_zero(matcher):
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words1 = 'He said , " some words " ...'.split()
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words2 = 'He said , " some three words " ...'.split()
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pattern1 = [{'ORTH': '"'},
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{'OP': '!', 'IS_PUNCT': True},
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{'OP': '!', 'IS_PUNCT': True},
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{'ORTH': '"'}]
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pattern2 = [{'ORTH': '"'},
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{'IS_PUNCT': True},
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{'IS_PUNCT': True},
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{'IS_PUNCT': True},
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{'ORTH': '"'}]
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matcher.add('Quote', None, pattern1)
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doc = get_doc(matcher.vocab, words1)
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assert len(matcher(doc)) == 1
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doc = get_doc(matcher.vocab, words2)
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assert len(matcher(doc)) == 0
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matcher.add('Quote', None, pattern2)
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assert len(matcher(doc)) == 0
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def test_matcher_match_zero_plus(matcher):
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words = 'He said , " some words " ...'.split()
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pattern = [{'ORTH': '"'},
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{'OP': '*', 'IS_PUNCT': False},
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{'ORTH': '"'}]
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matcher.add('Quote', None, pattern)
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doc = get_doc(matcher.vocab, words)
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assert len(matcher(doc)) == 1
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def test_matcher_match_one_plus(matcher):
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control = Matcher(matcher.vocab)
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control.add('BasicPhilippe', None, [{'ORTH': 'Philippe'}])
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doc = get_doc(control.vocab, ['Philippe', 'Philippe'])
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m = control(doc)
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assert len(m) == 2
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matcher.add('KleenePhilippe', None, [{'ORTH': 'Philippe', 'OP': '1'},
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{'ORTH': 'Philippe', 'OP': '+'}])
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m = matcher(doc)
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assert len(m) == 1
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