b52355d84e
git-svn-id: http://llvm-py.googlecode.com/svn/trunk@47 8d1e9007-1d4e-0410-b67e-1979fd6579aa
92 lines
3.4 KiB
Python
92 lines
3.4 KiB
Python
#
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# Copyright (c) 2008, Mahadevan R All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are met:
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#
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# * Redistributions of source code must retain the above copyright notice,
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# this list of conditions and the following disclaimer.
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#
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# * Redistributions in binary form must reproduce the above copyright notice,
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# this list of conditions and the following disclaimer in the documentation
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# and/or other materials provided with the distribution.
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#
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# * Neither the name of this software, nor the names of its
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# contributors may be used to endorse or promote products derived from
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# this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#
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"""Utility functions and classes.
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Used only in other modules, not for public use."""
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import llvm
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#===----------------------------------------------------------------------===
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# A set of helpers to check various things. Raises exceptions on
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# failures.
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#===----------------------------------------------------------------------===
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def check_gen(obj, type):
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if not isinstance(obj, type):
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type_str = type.__name__
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msg = "argument not an instance of llvm.core.%s" % type_str
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raise TypeError, msg
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def check_is_unowned(ownable):
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if ownable.owner:
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raise llvm.LLVMException, "object is already owned"
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#===----------------------------------------------------------------------===
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# A set of helpers to unpack a list of Python wrapper objects
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# into a list of PyCObject wrapped objects, checking types along
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# the way.
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#===----------------------------------------------------------------------===
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def unpack_gen(objlist, check_fn):
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for obj in objlist: check_fn(obj)
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return [ obj.ptr for obj in objlist ]
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#===----------------------------------------------------------------------===
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# Helper to wrap over iterables (LLVMFirstXXX, LLVMNextXXX). This used
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# to be a generator, but that loses subscriptability of the result, so
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# we now return a list.
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#===----------------------------------------------------------------------===
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def wrapiter(first, next, container, wrapper, extra=[]):
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# ptr = first(container)
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# while ptr:
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# yield wrapper(ptr)
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# ptr = next(ptr)
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ret = []
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ptr = first(container)
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while ptr:
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ret.append(wrapper(ptr, *extra))
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ptr = next(ptr)
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return ret
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#===----------------------------------------------------------------------===
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# Dummy owner, will not delete ownee. Be careful.
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#===----------------------------------------------------------------------===
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class dummy_owner(object):
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def __init__(self, ownee):
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ownee._own(self)
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