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# vim: tabstop=4 shiftwidth=4 softtabstop=4 

 

# Copyright 2010 United States Government as represented by the 

# Administrator of the National Aeronautics and Space Administration. 

# Copyright 2011 Justin Santa Barbara 

# All Rights Reserved. 

# 

#    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. 

 

"""Utilities and helper functions that won't produce circular imports.""" 

 

import inspect 

 

 

def getcallargs(function, *args, **kwargs): 

    """This is a simplified inspect.getcallargs (2.7+). 

 

    It should be replaced when python >= 2.7 is standard. 

    """ 

    keyed_args = {} 

    argnames, varargs, keywords, defaults = inspect.getargspec(function) 

 

    keyed_args.update(kwargs) 

 

    # NOTE(alaski) the implicit 'self' or 'cls' argument shows up in 

    # argnames but not in args or kwargs.  Uses 'in' rather than '==' because 

    # some tests use 'self2'. 

46    if 'self' in argnames[0] or 'cls' == argnames[0]: 

        # The function may not actually be a method or have im_self. 

        # Typically seen when it's stubbed with mox. 

44        if inspect.ismethod(function) and hasattr(function, 'im_self'): 

            keyed_args[argnames[0]] = function.im_self 

        else: 

            keyed_args[argnames[0]] = None 

 

    remaining_argnames = filter(lambda x: x not in keyed_args, argnames) 

    keyed_args.update(dict(zip(remaining_argnames, args))) 

 

55    if defaults: 

        num_defaults = len(defaults) 

        for argname, value in zip(argnames[-num_defaults:], defaults): 

            if argname not in keyed_args: 

                keyed_args[argname] = value 

 

    return keyed_args