/usr/lib/python2.7/dist-packages/bson/code.py is in python-bson 2.6.3-1build1.
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#
# 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.
"""Tools for representing JavaScript code in BSON.
"""
class Code(str):
"""BSON's JavaScript code type.
Raises :class:`TypeError` if `code` is not an instance of
:class:`basestring` (:class:`str` in python 3) or `scope`
is not ``None`` or an instance of :class:`dict`.
Scope variables can be set by passing a dictionary as the `scope`
argument or by using keyword arguments. If a variable is set as a
keyword argument it will override any setting for that variable in
the `scope` dictionary.
:Parameters:
- `code`: string containing JavaScript code to be evaluated
- `scope` (optional): dictionary representing the scope in which
`code` should be evaluated - a mapping from identifiers (as
strings) to values
- `**kwargs` (optional): scope variables can also be passed as
keyword arguments
.. versionadded:: 1.9
Ability to pass scope values using keyword arguments.
"""
def __new__(cls, code, scope=None, **kwargs):
if not isinstance(code, basestring):
raise TypeError("code must be an "
"instance of %s" % (basestring.__name__,))
self = str.__new__(cls, code)
try:
self.__scope = code.scope
except AttributeError:
self.__scope = {}
if scope is not None:
if not isinstance(scope, dict):
raise TypeError("scope must be an instance of dict")
self.__scope.update(scope)
self.__scope.update(kwargs)
return self
@property
def scope(self):
"""Scope dictionary for this instance.
"""
return self.__scope
def __repr__(self):
return "Code(%s, %r)" % (str.__repr__(self), self.__scope)
def __eq__(self, other):
if isinstance(other, Code):
return (self.__scope, str(self)) == (other.__scope, str(other))
return False
def __ne__(self, other):
return not self == other
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