b52355d84e
git-svn-id: http://llvm-py.googlecode.com/svn/trunk@47 8d1e9007-1d4e-0410-b67e-1979fd6579aa
80 lines
2.8 KiB
Python
80 lines
2.8 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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"""Common classes related to LLVM.
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"""
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VERSION = '0.3'
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#===----------------------------------------------------------------------===
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# Exceptions
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#===----------------------------------------------------------------------===
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class LLVMException(Exception):
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"""Generic LLVM exception."""
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def __init__(self, msg=""):
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Exception.__init__(self, msg)
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#===----------------------------------------------------------------------===
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# Ownables
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#===----------------------------------------------------------------------===
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class Ownable(object):
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"""Objects that can be owned.
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Modules and Module Providers can be owned, i.e., the responsibility of
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destruction of ownable objects can be handed over to other objects. The
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llvm.Ownable class represents objects that can be so owned. This class
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is NOT intended for public use.
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"""
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def __init__(self, ptr, del_fn):
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self.ptr = ptr
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self.owner = None
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self.del_fn = del_fn
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def _own(self, owner):
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if self.owner:
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raise LLVMException, "object already owned"
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self.owner = owner
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def _disown(self):
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if not self.owner:
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raise LLVMException, "not owned"
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self.owner = None
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def __del__(self):
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if not self.owner:
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self.del_fn(self.ptr)
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