Python CharSet, DeepLips Examples

Example #1

File: CharSetTest.py Project: dezgeg/Python-Regex

class CharSetTest(unittest.TestCase):
	def setUp(self):
		self.cs = CharSet()
	def test_add(self):
		self.cs.add('a')
		self.assertTrue(self.cs.contains('a'))
	def test_add_invalid(self):
		self.assertRaises(ValueError, self.cs.add, '-')
	def test_add_range(self):
		self.cs.add_range('a', 'c')
		for c in ['a', 'b', 'c']:
			self.assertTrue(self.cs.contains(c))
	def test_add_invalid_range(self):
		self.assertRaises(ValueError, self.cs.add_range, 'c', 'a')

Example #2

File: Lexer.py Project: dezgeg/Python-Regex

	def __read_charset(self):
		"""Lukee syötteestä merkkijoukon ja palauttaa sen, kun merkkijoukon avaava '[' on luettu ennen tämän funktion kutsua"""
		c = self.next_char()
		negated = False
		charset = CharSet()

		if c == '^':
			negated = True
			c = self.next_char()
		
		while c != ']':
			self.check_allowed_char(c)
			c2 = self.peek_char()
			if c2 == '-': # character range
				self.next_char() # eat -
				c2 = self.next_char()
				self.check_allowed_char(c2)
				charset.add_range(c, c2)
			else:
				charset.add(c)
			c = self.next_char()
		if negated:
			charset.negate()
		return charset

Example #3

File: CharSetTest.py Project: dezgeg/Python-Regex

	def setUp(self):
		self.cs = CharSet()