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# -*- coding: iso-8859-1 -*-
#
# LanguageTool -- A Rule-Based Style and Grammar Checker
# Copyright (C) 2002,2003,2004 Daniel Naber <daniel.naber@t-online.de>
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
import re
import unittest
import Chunker
class LocalRules:
def __init__(self, rule_list):
self.rules = rule_list
return
class ChunkerTestCase(unittest.TestCase):
def testChunking(self):
c = Chunker.Chunker()
r1 = Chunker.Rule("NP1: AT0 NN1 NN1")
r2 = Chunker.Rule("NP2: AT0 NN1")
rules = LocalRules([r1, r2])
c.setRules(rules)
tagged_text = self._makeList("Blah/XX the/AT0 house/NN1 foo/YY")
chunks = c.chunk(tagged_text)
self.assertEqual(chunks, [(2, 4, 'NP2')])
tagged_text = self._makeList("Blah/XX house/NN1 foo/YY")
chunks = c.chunk(tagged_text)
self.assertEqual(chunks, [])
tagged_text = self._makeList("the/AT0 summer/NN1 house/NN1 foo/YY2")
chunks = c.chunk(tagged_text)
self.assertEqual(chunks, [(0, 4, 'NP1')])
# more than one chunk:
tagged_text = self._makeList("the/AT0 summer/NN1 is/VB a/AT0 hit/NN1")
chunks = c.chunk(tagged_text)
self.assertEqual(chunks, [(0, 2, 'NP2'), (6, 8, 'NP2')])
tagged_text = self._makeList("the/AT0 summer/NN1 a/AT0 hit/NN1")
chunks = c.chunk(tagged_text)
self.assertEqual(chunks, [(0, 2, 'NP2'), (4, 6, 'NP2')])
return
def _makeList(self, s):
parts = re.split("(\s+)", s)
l = []
for part in parts:
word = None
word_norm = None
tag = None
pair = re.split("/", part)
if len(pair) == 2:
word, tag = pair
word_norm = word
else:
word = pair[0]
l.append((word, word_norm, tag))
return l
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