Author: Armin Rigo <[email protected]>
Branch: ffi-backend
Changeset: r55928:48ceed9ac287
Date: 2012-07-05 16:11 +0200
http://bitbucket.org/pypy/pypy/changeset/48ceed9ac287/
Log: read_variable(), write_variable()
diff --git a/pypy/module/_cffi_backend/libraryobj.py
b/pypy/module/_cffi_backend/libraryobj.py
--- a/pypy/module/_cffi_backend/libraryobj.py
+++ b/pypy/module/_cffi_backend/libraryobj.py
@@ -7,6 +7,7 @@
from pypy.rlib.rdynload import DLLHANDLE, dlopen, dlsym, dlclose, DLOpenError
from pypy.module._cffi_backend.cdataobj import W_CData
+from pypy.module._cffi_backend.ctypeobj import W_CType
from pypy.module._cffi_backend.ctypefunc import W_CTypeFunc
@@ -44,11 +45,33 @@
name, self.name)
return W_CData(space, rffi.cast(rffi.CCHARP, cdata), ctypefunc)
+ @unwrap_spec(ctype=W_CType, name=str)
+ def read_variable(self, ctype, name):
+ space = self.space
+ cdata = dlsym(self.handle, name)
+ if not cdata:
+ raise operationerrfmt(space.w_KeyError,
+ "variable '%s' not found in library '%s'",
+ name, self.name)
+ return ctype.convert_to_object(rffi.cast(rffi.CCHARP, cdata))
+
+ @unwrap_spec(ctype=W_CType, name=str)
+ def write_variable(self, ctype, name, w_value):
+ space = self.space
+ cdata = dlsym(self.handle, name)
+ if not cdata:
+ raise operationerrfmt(space.w_KeyError,
+ "variable '%s' not found in library '%s'",
+ name, self.name)
+ ctype.convert_from_object(rffi.cast(rffi.CCHARP, cdata), w_value)
+
W_Library.typedef = TypeDef(
'_cffi_backend.Library',
__repr__ = interp2app(W_Library.repr),
load_function = interp2app(W_Library.load_function),
+ read_variable = interp2app(W_Library.read_variable),
+ write_variable = interp2app(W_Library.write_variable),
)
W_Library.acceptable_as_base_class = False
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