def __init__(self, fieldName, isAllowedToBeEmpty, length, rule, dataFormat):
super(ChoiceFieldFormat, self).__init__(fieldName, isAllowedToBeEmpty, length, rule, dataFormat, emptyValue="")
self.choices = []
# Split rule into tokens, ignoring white space.
tokens = _tools.tokenizeWithoutSpace(rule)
# Extract choices from rule tokens.
previousToky = None
toky = tokens.next()
while not _tools.isEofToken(toky):
if _tools.isCommaToken(toky):
# Handle comma after comma without choice.
if previousToky:
previousTokyText = previousToky[1]
else:
previousTokyText = None
raise FieldSyntaxError(u"choice value must precede a comma (,) but found: %r" % previousTokyText)
choice = _tools.tokenText(toky)
if not choice:
raise FieldSyntaxError(
u"choice field must be allowed to be empty instead of containing an empty choice"
)
self.choices.append(choice)
toky = tokens.next()
if not _tools.isEofToken(toky):
if not _tools.isCommaToken(toky):
raise FieldSyntaxError(u"comma (,) must follow choice value %r but found: %r" % (choice, toky[1]))
# Process next choice after comma.
toky = tokens.next()
if _tools.isEofToken(toky):
raise FieldSyntaxError(u"trailing comma (,) must be removed")
if not self.isAllowedToBeEmpty and not self.choices:
raise FieldSyntaxError(u"choice field without any choices must be allowed to be empty")
def __init__(self, fieldName, isAllowedToBeEmpty, length, rule,
dataFormat):
super(ChoiceFieldFormat, self).__init__(fieldName,
isAllowedToBeEmpty,
length,
rule,
dataFormat,
emptyValue="")
self.choices = []
# Split rule into tokens, ignoring white space.
tokens = _tools.tokenizeWithoutSpace(rule)
# Extract choices from rule tokens.
previousToky = None
toky = tokens.next()
while not _tools.isEofToken(toky):
if _tools.isCommaToken(toky):
# Handle comma after comma without choice.
if previousToky:
previousTokyText = previousToky[1]
else:
previousTokyText = None
raise FieldSyntaxError(
u"choice value must precede a comma (,) but found: %r" %
previousTokyText)
choice = _tools.tokenText(toky)
if not choice:
raise FieldSyntaxError(
u"choice field must be allowed to be empty instead of containing an empty choice"
)
self.choices.append(choice)
toky = tokens.next()
if not _tools.isEofToken(toky):
if not _tools.isCommaToken(toky):
raise FieldSyntaxError(
u"comma (,) must follow choice value %r but found: %r"
% (choice, toky[1]))
# Process next choice after comma.
toky = tokens.next()
if _tools.isEofToken(toky):
raise FieldSyntaxError(
u"trailing comma (,) must be removed")
if not self.isAllowedToBeEmpty and not self.choices:
raise FieldSyntaxError(
u"choice field without any choices must be allowed to be empty"
)
def validatedFieldName(supposedFieldName, location=None):
"""
Same as ``supposedFieldName`` except with surrounding white space removed, provided that it
describes a valid field name. Otherwise, raise a `FieldSyntaxError` pointing to ``location``.
"""
tokens = _tools.tokenizeWithoutSpace(supposedFieldName)
tokenType, result, _, _, _ = tokens.next()
if tokenType != token.NAME:
message = (
u"field name must be a valid Python name consisting of ASCII letters, underscore (%r) and digits but is: %r"
% ("_", result)
)
raise FieldSyntaxError(message, location)
if keyword.iskeyword(result):
raise FieldSyntaxError(u"field name must not be a Python keyword but is: %r" % result, location)
toky = tokens.next()
if not _tools.isEofToken(toky):
raise FieldSyntaxError(u"field name must be a single word but is: %r" % supposedFieldName, location)
return result
def validatedFieldName(supposedFieldName, location=None):
"""
Same as ``supposedFieldName`` except with surrounding white space removed, provided that it
describes a valid field name. Otherwise, raise a `FieldSyntaxError` pointing to ``location``.
"""
tokens = _tools.tokenizeWithoutSpace(supposedFieldName)
tokenType, result, _, _, _ = tokens.next()
if tokenType != token.NAME:
message = u"field name must be a valid Python name consisting of ASCII letters, underscore (%r) and digits but is: %r" % (
"_", result)
raise FieldSyntaxError(message, location)
if keyword.iskeyword(result):
raise FieldSyntaxError(
u"field name must not be a Python keyword but is: %r" % result,
location)
toky = tokens.next()
if not _tools.isEofToken(toky):
raise FieldSyntaxError(
u"field name must be a single word but is: %r" % supposedFieldName,
location)
return result
