# Copyright 2008-2015 Nokia Networks
# Copyright 2016- Robot Framework Foundation
#
# Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from robot.errors import DataError
from robot.utils import is_string
from .splitter import VariableIterator
[docs]def is_var(string, identifiers='$@&'):
if not string or not is_string(string) or len(string) < 4:
return False
if string[0] not in identifiers or string[1] != '{' or string[-1] != '}':
return False
body = string[2:-1]
return '{' not in body and '}' not in body
[docs]def is_scalar_var(string):
return is_var(string, identifiers='$')
[docs]def is_list_var(string):
return is_var(string, identifiers='@')
[docs]def is_dict_var(string):
return is_var(string, identifiers='&')
[docs]def contains_var(string, identifiers='$@&'):
return (is_string(string) and
any(i in string for i in identifiers) and
'{' in string and '}' in string and
bool(VariableIterator(string, identifiers)))
[docs]def validate_var(string, identifiers='$@&'):
if not is_var(string, identifiers):
raise DataError("Invalid variable name '%s'." % string)