107 lines
3.6 KiB
Python
107 lines
3.6 KiB
Python
#
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# Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 The SCons Foundation
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#
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# Permission is hereby granted, free of charge, to any person obtaining
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# a copy of this software and associated documentation files (the
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# "Software"), to deal in the Software without restriction, including
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# without limitation the rights to use, copy, modify, merge, publish,
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# distribute, sublicense, and/or sell copies of the Software, and to
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# permit persons to whom the Software is furnished to do so, subject to
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# the following conditions:
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#
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# The above copyright notice and this permission notice shall be included
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# in all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
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# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
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# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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#
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# Portions of the following are derived from the compat.py file in
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# Twisted, under the following copyright:
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#
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# Copyright (c) 2001-2004 Twisted Matrix Laboratories
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__doc__ = """
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Compatibility idioms for builtins names
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This module adds names to the builtins module for things that we want
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to use in SCons but which don't show up until later Python versions than
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the earliest ones we support.
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This module checks for the following builtins names:
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all()
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any()
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memoryview()
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Implementations of functions are *NOT* guaranteed to be fully compliant
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with these functions in later versions of Python. We are only concerned
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with adding functionality that we actually use in SCons, so be wary
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if you lift this code for other uses. (That said, making these more
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nearly the same as later, official versions is still a desirable goal,
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we just don't need to be obsessive about it.)
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If you're looking at this with pydoc and various names don't show up in
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the FUNCTIONS or DATA output, that means those names are already built in
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to this version of Python and we don't need to add them from this module.
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"""
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__revision__ = "src/engine/SCons/compat/_scons_builtins.py 2013/03/03 09:48:35 garyo"
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import builtins
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try:
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all
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except NameError:
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# Pre-2.5 Python has no all() function.
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def all(iterable):
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"""
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Returns True if all elements of the iterable are true.
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"""
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for element in iterable:
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if not element:
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return False
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return True
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builtins.all = all
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all = all
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try:
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any
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except NameError:
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# Pre-2.5 Python has no any() function.
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def any(iterable):
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"""
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Returns True if any element of the iterable is true.
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"""
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for element in iterable:
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if element:
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return True
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return False
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builtins.any = any
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any = any
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try:
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memoryview
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except NameError:
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# Pre-2.7 doesn't have the memoryview() built-in.
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class memoryview(object):
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def __init__(self, obj):
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# wrapping buffer in () keeps the fixer from changing it
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self.obj = (buffer)(obj)
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def __getitem__(self, indx):
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if isinstance(indx, slice):
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return self.obj[indx.start:indx.stop]
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else:
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return self.obj[indx]
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builtins.memoryview = memoryview
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# Local Variables:
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# tab-width:4
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# indent-tabs-mode:nil
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# End:
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# vim: set expandtab tabstop=4 shiftwidth=4:
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