def test_mixed(self):
'''
Cannot mix tokens and non-tokens at same level.
'''
bad = Token(Any()) & Any()
try:
bad.get_parse()
assert False, 'expected failure'
except LexerError as err:
assert str(err) == 'The grammar contains a mix of Tokens and ' \
'non-Token matchers at the top level. If ' \
'Tokens are used then non-token matchers ' \
'that consume input must only appear "inside" ' \
'Tokens. The non-Token matchers include: ' \
'Any(None).', str(err)
else:
assert False, 'wrong exception'
def test_mixed(self):
'''
Cannot mix tokens and non-tokens at same level.
'''
bad = Token(Any()) & Any()
try:
bad.get_parse()
assert False, 'expected failure'
except LexerError as err:
assert str(err) == 'The grammar contains a mix of Tokens and ' \
'non-Token matchers at the top level. If ' \
'Tokens are used then non-token matchers ' \
'that consume input must only appear "inside" ' \
'Tokens. The non-Token matchers include: ' \
'Any(None).', str(err)
else:
assert False, 'wrong exception'
def test_string_arg(self):
'''
Skip anything(not just spaces)
'''
words = Token('[a-z]+')[:]
words.config.lexer(discard='.')
parser = words.get_parse()
results = parser('abc defXghi')
assert results == ['abc', 'def', 'ghi'], results
def test_string_arg(self):
'''
Skip anything(not just spaces)
'''
words = Token('[a-z]+')[:]
words.config.lexer(discard='.')
parser = words.get_parse()
results = parser('abc defXghi')
assert results == ['abc', 'def', 'ghi'], results
def test_bad_error_msg(self):
'''
An ugly error message (can't we improve this?)
'''
#basicConfig(level=DEBUG)
words = Token('[a-z]+')[:]
words.config.lexer()
parser = words.get_parse()
try:
parser('abc defXghi')
assert False, 'expected error'
except RuntimeLexerError as err:
assert str(err) == "No lexer for 'Xghi' at line 1 " \
"character 7 of str: 'abc defXghi'.", str(err)
def test_bad_error_msg(self):
'''
An ugly error message (can't we improve this?)
'''
#basicConfig(level=DEBUG)
words = Token('[a-z]+')[:]
words.config.lexer()
parser = words.get_parse()
try:
parser('abc defXghi')
assert False, 'expected error'
except RuntimeLexerError as err:
assert str(err) == "No lexer for 'Xghi' at line 1 " \
"character 7 of str: 'abc defXghi'.", str(err)
def test_bad_space(self):
'''
An unexpected character fails to match.
'''
token = Token('a')
token.config.clear().lexer(discard='b')
parser = token.get_parse()
assert parser('a') == ['a'], parser('a')
assert parser('b') == None, parser('b')
try:
parser('c')
assert False, 'expected failure'
except RuntimeLexerError as err:
assert str(err) == "No lexer for 'c' at line 1 " \
"character 0 of str: 'c'.", str(err)
def test_bad_space(self):
'''
An unexpected character fails to match.
'''
token = Token('a')
token.config.clear().lexer(discard='b')
parser = token.get_parse()
assert parser('a') == ['a'], parser('a')
assert parser('b') == None, parser('b')
try:
parser('c')
assert False, 'expected failure'
except RuntimeLexerError as err:
assert str(err) == "No lexer for 'c' at line 1 " \
"character 0 of str: 'c'.", str(err)
