# The contents of this file are subject to the Mozilla Public License
# (MPL) Version 1.1 (the "License"); you may not use this file except
# in compliance with the License. You may obtain a copy of the License
# at http://www.mozilla.org/MPL/
#
# Software distributed under the License is distributed on an "AS IS"
# basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
# the License for the specific language governing rights and
# limitations under the License.
#
# The Original Code is LEPL (http://www.acooke.org/lepl)
# The Initial Developer of the Original Code is Andrew Cooke.
# Portions created by the Initial Developer are Copyright (C) 2009-2010
# Andrew Cooke (andrew@acooke.org). All Rights Reserved.
#
# Alternatively, the contents of this file may be used under the terms
# of the LGPL license (the GNU Lesser General Public License,
# http://www.gnu.org/licenses/lgpl.html), in which case the provisions
# of the LGPL License are applicable instead of those above.
#
# If you wish to allow use of your version of this file only under the
# terms of the LGPL License and not to allow others to use your version
# of this file under the MPL, indicate your decision by deleting the
# provisions above and replace them with the notice and other provisions
# required by the LGPL License.  If you do not delete the provisions
# above, a recipient may use your version of this file under either the
# MPL or the LGPL License.

'''
Tests for the lepl.regexp.interval module.
'''

from logging import basicConfig, DEBUG
from unittest import TestCase, TestLoader, TextTestRunner

from lepl.lexer.matchers import Token
from lepl.matchers.core import Any
from lepl.matchers.derived import Eos, Word
from lepl.regexp.interval import IntervalMap, TaggedFragments, Character
from lepl.regexp.unicode import UnicodeAlphabet


UNICODE = UnicodeAlphabet.instance()


# pylint: disable-msg=C0103, C0111, C0301, C0324
# (dude this is just a test)


class IntervalMapTest(TestCase):
    
    def test_single(self):
        m = IntervalMap()
        m[(1,2)] = 12
        assert m[0] == None, m[0]
        assert m[1] == 12, m[1]
        assert m[1.5] == 12, m[1.5]
        assert m[2] == 12, m[2]
        assert m[3] == None, m[3]
    
    def test_multiple(self):
        m = IntervalMap()
        m[(1,2)] = 12
        m[(4,5)] = 45
        for (i, v) in [(0, None), (1, 12), (2, 12), 
                       (3, None), (4, 45), (5, 45), (6, None)]:
            assert m[i] == v, (i, m[i])

    def test_delete(self):
        m = IntervalMap()
        m[(1,2)] = 12
        m[(4,5)] = 45
        for (i, v) in [(0, None), (1, 12), (2, 12), 
                       (3, None), (4, 45), (5, 45), (6, None)]:
            assert m[i] == v, (i, m[i])
        del m[(1,2)]
        for (i, v) in [(0, None), (1, None), (2, None), 
                       (3, None), (4, 45), (5, 45), (6, None)]:
            assert m[i] == v, (i, m[i])
        
        
class TaggedFragmentsTest(TestCase):
    
    def test_single(self):
        m = TaggedFragments(UNICODE)
        m.append(Character([('b', 'c')], UNICODE), 'bc')
        l = list(m)
        assert l == [(('b', 'c'), ['bc'])], l
        
    def test_overlap(self):
        m = TaggedFragments(UNICODE)
        m.append(Character([('b', 'd')], UNICODE), 'bd')
        m.append(Character([('c', 'e')], UNICODE), 'ce')
        l = list(m)
        assert l == [(('b', 'b'), ['bd']), 
                     (('c', 'd'), ['bd', 'ce']), 
                     (('e', 'e'), ['ce'])], l


class UnicodeBugTest(TestCase):

    def test_bug(self):
        #basicConfig(level=DEBUG)
        t = Token(Word())(Any()[2] & Eos())                               
        t.match("ab cd")


if __name__ == '__main__':
    suite = TestLoader().loadTestsFromTestCase(UnicodeBugTest)
    TextTestRunner(verbosity=2).run(suite)