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from pecan.compat import getargspec as _getargspec
def iscontroller(obj):
return getattr(obj, 'exposed', False)
def getargspec(method):
"""
Drill through layers of decorators attempting to locate the actual argspec
for a method.
"""
argspec = _getargspec(method)
args = argspec[0]
if args and args[0] == 'self':
return argspec
if hasattr(method, '__func__'):
method = method.__func__
func_closure = method.__closure__
# NOTE(sileht): if the closure is None we cannot look deeper,
# so return actual argspec, this occurs when the method
# is static for example.
if not func_closure:
return argspec
closure = None
# In the case of deeply nested decorators (with arguments), it's possible
# that there are several callables in scope; Take a best guess and go
# with the one that looks most like a pecan controller function
# (has a __code__ object, and 'self' is the first argument)
func_closure = filter(
lambda c: (
callable(c.cell_contents) and
hasattr(c.cell_contents, '__code__')
),
func_closure
)
func_closure = sorted(
func_closure,
key=lambda c: 'self' in c.cell_contents.__code__.co_varnames,
reverse=True
)
closure = func_closure[0]
method = closure.cell_contents
return getargspec(method)
def _cfg(f):
if not hasattr(f, '_pecan'):
f._pecan = {}
return f._pecan
|
