4ee007190c
git-svn-id: http://llvm-py.googlecode.com/svn/trunk@32 8d1e9007-1d4e-0410-b67e-1979fd6579aa
62 lines
1.9 KiB
Python
62 lines
1.9 KiB
Python
"""Utility functions and classes.
|
|
|
|
Used only in other modules, not for public use."""
|
|
|
|
import llvm
|
|
|
|
|
|
#===----------------------------------------------------------------------===
|
|
# A set of helpers to check various things. Raises exceptions on
|
|
# failures.
|
|
#===----------------------------------------------------------------------===
|
|
|
|
def check_gen(obj, type):
|
|
if not isinstance(obj, type):
|
|
type_str = type.__name__
|
|
msg = "argument not an instance of llvm.core.%s" % type_str
|
|
raise TypeError, msg
|
|
|
|
def check_is_unowned(ownable):
|
|
if ownable.owner:
|
|
raise llvm.LLVMException, "object is already owned"
|
|
|
|
|
|
#===----------------------------------------------------------------------===
|
|
# A set of helpers to unpack a list of Python wrapper objects
|
|
# into a list of PyCObject wrapped objects, checking types along
|
|
# the way.
|
|
#===----------------------------------------------------------------------===
|
|
|
|
def unpack_gen(objlist, check_fn):
|
|
for obj in objlist: check_fn(obj)
|
|
return [ obj.ptr for obj in objlist ]
|
|
|
|
|
|
#===----------------------------------------------------------------------===
|
|
# Helper to wrap over iterables (LLVMFirstXXX, LLVMNextXXX). This used
|
|
# to be a generator, but that loses subscriptability of the result, so
|
|
# we now return a list.
|
|
#===----------------------------------------------------------------------===
|
|
|
|
def wrapiter(first, next, container, wrapper, extra=[]):
|
|
# ptr = first(container)
|
|
# while ptr:
|
|
# yield wrapper(ptr)
|
|
# ptr = next(ptr)
|
|
ret = []
|
|
ptr = first(container)
|
|
while ptr:
|
|
ret.append(wrapper(ptr, *extra))
|
|
ptr = next(ptr)
|
|
return ret
|
|
|
|
|
|
#===----------------------------------------------------------------------===
|
|
# Dummy owner, will not delete ownee. Be careful.
|
|
#===----------------------------------------------------------------------===
|
|
|
|
class dummy_owner(object):
|
|
|
|
def __init__(self, ownee):
|
|
ownee._own(self)
|
|
|