Author: Armin Rigo <[email protected]>
Branch: ffi-backend
Changeset: r55969:ec27cf4e431c
Date: 2012-07-07 17:48 +0200
http://bitbucket.org/pypy/pypy/changeset/ec27cf4e431c/
Log: Test and fix
diff --git a/pypy/module/_cffi_backend/cbuffer.py
b/pypy/module/_cffi_backend/cbuffer.py
--- a/pypy/module/_cffi_backend/cbuffer.py
+++ b/pypy/module/_cffi_backend/cbuffer.py
@@ -2,7 +2,7 @@
from pypy.interpreter.buffer import RWBuffer
from pypy.interpreter.gateway import unwrap_spec
from pypy.rpython.lltypesystem import rffi
-from pypy.module._cffi_backend import cdataobj, ctypeptr
+from pypy.module._cffi_backend import cdataobj, ctypeptr, ctypearray
class LLBuffer(RWBuffer):
@@ -36,14 +36,19 @@
@unwrap_spec(cdata=cdataobj.W_CData, size=int)
def buffer(space, cdata, size=-1):
- if not isinstance(cdata.ctype, ctypeptr.W_CTypePtrOrArray):
+ ctype = cdata.ctype
+ if isinstance(ctype, ctypeptr.W_CTypePointer):
+ if size < 0:
+ size = ctype.ctitem.size
+ elif isinstance(ctype, ctypearray.W_CTypeArray):
+ if size < 0:
+ size = cdata._sizeof()
+ else:
raise operationerrfmt(space.w_TypeError,
"expected a pointer or array cdata, got '%s'",
- cdata.ctype.name)
+ ctype.name)
if size < 0:
- size = cdata._sizeof()
- if size < 0:
- raise operationerrfmt(space.w_TypeError,
- "don't know the size pointed to by '%s'",
- cdata.ctype.name)
+ raise operationerrfmt(space.w_TypeError,
+ "don't know the size pointed to by '%s'",
+ ctype.name)
return space.wrap(LLBuffer(cdata._cdata, size))
diff --git a/pypy/module/_cffi_backend/test/_backend_test_c.py
b/pypy/module/_cffi_backend/test/_backend_test_c.py
--- a/pypy/module/_cffi_backend/test/_backend_test_c.py
+++ b/pypy/module/_cffi_backend/test/_backend_test_c.py
@@ -1348,6 +1348,12 @@
assert (p < s) ^ (p > s)
def test_buffer():
+ BShort = new_primitive_type("short")
+ s = newp(new_pointer_type(BShort), 100)
+ assert sizeof(s) == size_of_ptr()
+ assert sizeof(BShort) == 2
+ assert len(str(buffer(s))) == 2
+ #
BChar = new_primitive_type("char")
BCharArray = new_array_type(new_pointer_type(BChar), None)
c = newp(BCharArray, "hi there")
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