[pypy-commit] pypy ffi-backend: Documentation

[arigo]

Author: Armin Rigo <arigo at tunes.org>
Branch: ffi-backend
Changeset: r56560:603539725659
Date: 2012-08-03 13:45 +0200
http://bitbucket.org/pypy/pypy/changeset/603539725659/

Log:	Documentation

diff --git a/pypy/rlib/jit_libffi.py b/pypy/rlib/jit_libffi.py
--- a/pypy/rlib/jit_libffi.py
+++ b/pypy/rlib/jit_libffi.py
@@ -31,10 +31,10 @@
 CIF_DESCRIPTION = lltype.Struct(
     'CIF_DESCRIPTION',
     ('cif', FFI_CIF),
-    ('abi', FFI_ABI),
-    ('nargs', lltype.Signed),
-    ('rtype', FFI_TYPE_P),
-    ('atypes', FFI_TYPE_PP),
+    ('abi', FFI_ABI),          # these 4 fields could also be read directly
+    ('nargs', lltype.Signed),  # from 'cif', but doing so adds a dependency
+    ('rtype', FFI_TYPE_P),     # on the exact fields available from ffi_cif.
+    ('atypes', FFI_TYPE_PP),   #
     ('exchange_size', lltype.Signed),
     ('exchange_result', lltype.Signed),
     ('exchange_result_libffi', lltype.Signed),