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More flexible python builtin slots

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The closure names used for builtin slots are mangled with their functype so
 that overloaded C++ method names can be used for multiple slots.
For example:
%feature("python:slot", "mp_subscript", functype="binaryfunc") SimpleArray::__getitem__;
%feature("python:slot", "sq_item", functype="ssizeargfunc") SimpleArray::__getitem__(Py_ssize_t n);
will generate closures:
  SWIGPY_SSIZEARGFUNC_CLOSURE(_wrap_SimpleArray___getitem__) /* defines _wrap_SimpleArray___getitem___ssizeargfunc_closure */
  SWIGPY_BINARYFUNC_CLOSURE(_wrap_SimpleArray___getitem__) /* defines _wrap_SimpleArray___getitem___binaryfunc_closure */
This commit is contained in:
William S Fulton 2016-09-22 08:12:46 +01:00
commit 848628ae91
5 changed files with 140 additions and 24 deletions
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@ -11,6 +11,24 @@ Version 3.0.11 (in progress)
we checked an uninitialised value instead. Fixes #627. Based on
patch from Sergey Seroshtan.
2016-09-22: wsfulton
[Python] More flexible python builtin slots for overloaded C++ function.
The closure names used for builtin slots are mangled with their functype so
that overloaded C++ method names can be used for multiple slots.
For example:
%feature("python:slot", "mp_subscript", functype="binaryfunc") SimpleArray::__getitem__;
%feature("python:slot", "sq_item", functype="ssizeargfunc") SimpleArray::__getitem__(Py_ssize_t n);
will generate closures:
SWIGPY_SSIZEARGFUNC_CLOSURE(_wrap_SimpleArray___getitem__) /* defines _wrap_SimpleArray___getitem___ssizeargfunc_closure */
SWIGPY_BINARYFUNC_CLOSURE(_wrap_SimpleArray___getitem__) /* defines _wrap_SimpleArray___getitem___binaryfunc_closure */
Previously only one name was defined: _wrap_SimpleArray___getitem___closure.
Hence the overloaded __getitem__ method can be used to support both mp_subscript and sq_item slots.
2016-09-17: wsfulton
[Python] Fix iterators for containers of NULL pointers (or Python None) when using
-builtin. Previously iteration would stop at the first element that was NULL.