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Diffstat (limited to 'lib/python2.7/site-packages/decorator-3.4.0-py2.7.egg/decorator.py')
| -rwxr-xr-x | lib/python2.7/site-packages/decorator-3.4.0-py2.7.egg/decorator.py | 251 |
1 files changed, 0 insertions, 251 deletions
diff --git a/lib/python2.7/site-packages/decorator-3.4.0-py2.7.egg/decorator.py b/lib/python2.7/site-packages/decorator-3.4.0-py2.7.egg/decorator.py deleted file mode 100755 index e0039148..00000000 --- a/lib/python2.7/site-packages/decorator-3.4.0-py2.7.egg/decorator.py +++ /dev/null @@ -1,251 +0,0 @@ -########################## LICENCE ############################### - -# Copyright (c) 2005-2012, Michele Simionato -# All rights reserved. - -# Redistribution and use in source and binary forms, with or without -# modification, are permitted provided that the following conditions are -# met: - -# Redistributions of source code must retain the above copyright -# notice, this list of conditions and the following disclaimer. -# Redistributions in bytecode form must reproduce the above copyright -# notice, this list of conditions and the following disclaimer in -# the documentation and/or other materials provided with the -# distribution. - -# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -# HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, -# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, -# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS -# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND -# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR -# TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE -# USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH -# DAMAGE. - -""" -Decorator module, see http://pypi.python.org/pypi/decorator -for the documentation. -""" - -__version__ = '3.4.0' - -__all__ = ["decorator", "FunctionMaker", "contextmanager"] - -import sys, re, inspect -if sys.version >= '3': - from inspect import getfullargspec - def get_init(cls): - return cls.__init__ -else: - class getfullargspec(object): - "A quick and dirty replacement for getfullargspec for Python 2.X" - def __init__(self, f): - self.args, self.varargs, self.varkw, self.defaults = \ - inspect.getargspec(f) - self.kwonlyargs = [] - self.kwonlydefaults = None - def __iter__(self): - yield self.args - yield self.varargs - yield self.varkw - yield self.defaults - def get_init(cls): - return cls.__init__.im_func - -DEF = re.compile('\s*def\s*([_\w][_\w\d]*)\s*\(') - -# basic functionality -class FunctionMaker(object): - """ - An object with the ability to create functions with a given signature. - It has attributes name, doc, module, signature, defaults, dict and - methods update and make. - """ - def __init__(self, func=None, name=None, signature=None, - defaults=None, doc=None, module=None, funcdict=None): - self.shortsignature = signature - if func: - # func can be a class or a callable, but not an instance method - self.name = func.__name__ - if self.name == '<lambda>': # small hack for lambda functions - self.name = '_lambda_' - self.doc = func.__doc__ - self.module = func.__module__ - if inspect.isfunction(func): - argspec = getfullargspec(func) - self.annotations = getattr(func, '__annotations__', {}) - for a in ('args', 'varargs', 'varkw', 'defaults', 'kwonlyargs', - 'kwonlydefaults'): - setattr(self, a, getattr(argspec, a)) - for i, arg in enumerate(self.args): - setattr(self, 'arg%d' % i, arg) - if sys.version < '3': # easy way - self.shortsignature = self.signature = \ - inspect.formatargspec( - formatvalue=lambda val: "", *argspec)[1:-1] - else: # Python 3 way - allargs = list(self.args) - allshortargs = list(self.args) - if self.varargs: - allargs.append('*' + self.varargs) - allshortargs.append('*' + self.varargs) - elif self.kwonlyargs: - allargs.append('*') # single star syntax - for a in self.kwonlyargs: - allargs.append('%s=None' % a) - allshortargs.append('%s=%s' % (a, a)) - if self.varkw: - allargs.append('**' + self.varkw) - allshortargs.append('**' + self.varkw) - self.signature = ', '.join(allargs) - self.shortsignature = ', '.join(allshortargs) - self.dict = func.__dict__.copy() - # func=None happens when decorating a caller - if name: - self.name = name - if signature is not None: - self.signature = signature - if defaults: - self.defaults = defaults - if doc: - self.doc = doc - if module: - self.module = module - if funcdict: - self.dict = funcdict - # check existence required attributes - assert hasattr(self, 'name') - if not hasattr(self, 'signature'): - raise TypeError('You are decorating a non function: %s' % func) - - def update(self, func, **kw): - "Update the signature of func with the data in self" - func.__name__ = self.name - func.__doc__ = getattr(self, 'doc', None) - func.__dict__ = getattr(self, 'dict', {}) - func.func_defaults = getattr(self, 'defaults', ()) - func.__kwdefaults__ = getattr(self, 'kwonlydefaults', None) - func.__annotations__ = getattr(self, 'annotations', None) - callermodule = sys._getframe(3).f_globals.get('__name__', '?') - func.__module__ = getattr(self, 'module', callermodule) - func.__dict__.update(kw) - - def make(self, src_templ, evaldict=None, addsource=False, **attrs): - "Make a new function from a given template and update the signature" - src = src_templ % vars(self) # expand name and signature - evaldict = evaldict or {} - mo = DEF.match(src) - if mo is None: - raise SyntaxError('not a valid function template\n%s' % src) - name = mo.group(1) # extract the function name - names = set([name] + [arg.strip(' *') for arg in - self.shortsignature.split(',')]) - for n in names: - if n in ('_func_', '_call_'): - raise NameError('%s is overridden in\n%s' % (n, src)) - if not src.endswith('\n'): # add a newline just for safety - src += '\n' # this is needed in old versions of Python - try: - code = compile(src, '<string>', 'single') - # print >> sys.stderr, 'Compiling %s' % src - exec code in evaldict - except: - print >> sys.stderr, 'Error in generated code:' - print >> sys.stderr, src - raise - func = evaldict[name] - if addsource: - attrs['__source__'] = src - self.update(func, **attrs) - return func - - @classmethod - def create(cls, obj, body, evaldict, defaults=None, - doc=None, module=None, addsource=True, **attrs): - """ - Create a function from the strings name, signature and body. - evaldict is the evaluation dictionary. If addsource is true an attribute - __source__ is added to the result. The attributes attrs are added, - if any. - """ - if isinstance(obj, str): # "name(signature)" - name, rest = obj.strip().split('(', 1) - signature = rest[:-1] #strip a right parens - func = None - else: # a function - name = None - signature = None - func = obj - self = cls(func, name, signature, defaults, doc, module) - ibody = '\n'.join(' ' + line for line in body.splitlines()) - return self.make('def %(name)s(%(signature)s):\n' + ibody, - evaldict, addsource, **attrs) - -def decorator(caller, func=None): - """ - decorator(caller) converts a caller function into a decorator; - decorator(caller, func) decorates a function using a caller. - """ - if func is not None: # returns a decorated function - evaldict = func.func_globals.copy() - evaldict['_call_'] = caller - evaldict['_func_'] = func - return FunctionMaker.create( - func, "return _call_(_func_, %(shortsignature)s)", - evaldict, undecorated=func, __wrapped__=func) - else: # returns a decorator - if inspect.isclass(caller): - name = caller.__name__.lower() - callerfunc = get_init(caller) - doc = 'decorator(%s) converts functions/generators into ' \ - 'factories of %s objects' % (caller.__name__, caller.__name__) - fun = getfullargspec(callerfunc).args[1] # second arg - elif inspect.isfunction(caller): - name = '_lambda_' if caller.__name__ == '<lambda>' \ - else caller.__name__ - callerfunc = caller - doc = caller.__doc__ - fun = getfullargspec(callerfunc).args[0] # first arg - else: # assume caller is an object with a __call__ method - name = caller.__class__.__name__.lower() - callerfunc = caller.__call__.im_func - doc = caller.__call__.__doc__ - fun = getfullargspec(callerfunc).args[1] # second arg - evaldict = callerfunc.func_globals.copy() - evaldict['_call_'] = caller - evaldict['decorator'] = decorator - return FunctionMaker.create( - '%s(%s)' % (name, fun), - 'return decorator(_call_, %s)' % fun, - evaldict, undecorated=caller, __wrapped__=caller, - doc=doc, module=caller.__module__) - -######################### contextmanager ######################## - -def __call__(self, func): - 'Context manager decorator' - return FunctionMaker.create( - func, "with _self_: return _func_(%(shortsignature)s)", - dict(_self_=self, _func_=func), __wrapped__=func) - -try: # Python >= 3.2 - - from contextlib import _GeneratorContextManager - ContextManager = type( - 'ContextManager', (_GeneratorContextManager,), dict(__call__=__call__)) - -except ImportError: # Python >= 2.5 - - from contextlib import GeneratorContextManager - def __init__(self, f, *a, **k): - return GeneratorContextManager.__init__(self, f(*a, **k)) - ContextManager = type( - 'ContextManager', (GeneratorContextManager,), - dict(__call__=__call__, __init__=__init__)) - -contextmanager = decorator(ContextManager) |