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"""
Decorator to mark functions and methods as recordable.
"""
# Author: Prabhu Ramachandran <prabhu@aero.iitb.ac.in>
# Copyright (c) 2008, Prabhu Ramachandran and Enthought, Inc.
# License: BSD Style.
from .package_globals import get_recorder
# Guard to ensure that only the outermost recordable call is recorded
# and nested calls ignored.
_outermost_call = True
def recordable(func):
"""A decorator that wraps a function into one that is recordable.
This will record the function only if the global recorder has been
set via a `set_recorder` function call.
This is almost entirely copied from the
apptools.appscripting.scriptable.scriptable decorator.
"""
def _wrapper(*args, **kw):
"""A wrapper returned to replace the decorated function."""
global _outermost_call
# Boolean to specify if the method was recorded or not.
record = False
if _outermost_call:
# Get the recorder.
rec = get_recorder()
if rec is not None:
_outermost_call = False
# Record the method if recorder is available.
record = True
try:
result = rec.record_function(func, args, kw)
finally:
_outermost_call = True
if not record:
# If the method was not recorded, just call it.
result = func(*args, **kw)
return result
# Mimic the actual function.
_wrapper.__name__ = func.__name__
_wrapper.__doc__ = func.__doc__
_wrapper.__dict__.update(func.__dict__)
return _wrapper
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