def get_attr_usage( func, attrpath ):
''' attrpath = [a, b, c] -> a.b.c
attrpath = [1, b.c] -> func_args[1].b.c
'''
if not isinstance( func, Code):
code = Code.from_code( getattr( func, 'im_func', func).func_code)
else: code = func
#print code.code
root_var = attrpath[0]
subattrs = attrpath[1:]
if isinstance( root_var, int): #argix
root_var = code.args[ root_var]
return get_var_attr_usage( code, root_var, subattrs)
def execode( func, noargs =True, get_all_data =False):
'''expose func code as plain executable block without own namespace
usage: pass all args/vars in locals/globals:
cf = execode( func1)
#no return value:
exec cf in mylocalz( x=7, y=6, max= mymax )
#with return value:
r = eval( cf, mylocalz( x=9, y=0, max= mymax ) )
ref: http://wiki.python.org/moin/ByteplayDoc
http://www.voidspace.org.uk/python/articles/code_blocks.shtml
http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/498242
'''
fc = getattr( func, 'im_func', func).func_code
code = Code.from_code( fc)
#XXX TODO:
# LOAD_DEREF -> LOAD_NAME: needs same to be done in all nested funcs!!
#if opmap['LOAD_DEREF'] in [ c for c,a in code.code ]:
# print code.code
#print code.code
#print code.__dict__
assert not code.varargs, func
assert not code.varkwargs, func
code.code = [ (replacer.get( opcode,opcode),arg) for opcode,arg in code.code]
global_names = [ arg for opcode,arg in code.code if opcode == opload_glob ]
code.newlocals = False #no local namespace
assert not code.freevars
code.freevars = () #kill (to-be-bound) vars
org_args = code.args
if noargs:
code.args = () #kill (to-be-bound) args
c = code.to_code()
#assert not fc.co_cellvars, fc.co_cellvars
if not get_all_data: return c
return c, org_args, global_names
return dict( code=c, org_args=org_args, global_names=global_names)
