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#===- core.py - Python LLVM Bindings -------------------------*- python -*--===#
#
# The LLVM Compiler Infrastructure
#
# This file is distributed under the University of Illinois Open Source
# License. See LICENSE.TXT for details.
#
#===------------------------------------------------------------------------===#
from .common import LLVMObject
from .common import get_library
from ctypes import POINTER
from ctypes import byref
from ctypes import c_char_p
from ctypes import c_void_p
__all__ = [
"lib",
"MemoryBufferRef",
]
lib = get_library()
class MemoryBuffer(object):
"""Represents an opaque memory buffer."""
def __init__(self, filename=None):
"""Create a new memory buffer.
Currently, we support creating from the contents of a file at the
specified filename.
"""
if filename is None:
raise Exception("filename argument must be defined")
memory = LLVMObject()
out = c_char_p(None)
result = lib.LLVMCreateMemoryBufferWithContentsOfFile(filename,
byref(memory), byref(out))
if result:
raise Exception("Could not create memory buffer: %s" % out.value)
self._memory = memory
self._as_parameter_ = self._memory
self._owned = True
def __del__(self):
if self._owned:
lib.LLVMDisposeMemoryBuffer(self._memory)
def from_param(self):
return self._as_parameter_
def release_ownership(self):
self._owned = False
def register_library(library):
library.LLVMCreateMemoryBufferWithContentsOfFile.argtypes = [c_char_p,
POINTER(LLVMObject), POINTER(c_char_p)]
library.LLVMCreateMemoryBufferWithContentsOfFile.restype = bool
library.LLVMDisposeMemoryBuffer.argtypes = [c_void_p]
register_library(lib)
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