RNA functions

Fixed and completed support for returning multiple values. This includes support for returning arrays, both fixed and dynamically sized. The way this is achieved is by storing an additional int value next to the dynamic parameter in the ParameterList stack which gets passed to the C function as an additional parameter. In the case of return parameters it is duty of the C function to set this int to the correct length value for the dynamic parameter (which makes sense). Note that for the dynamic output/return parameter it is assumed the function has allocated that memory (which gets freed automatically).

Also, I cleaned the makesrna's bridge function generation code a bit and renamed PROP_RETURN to PROP_OUTPUT, which represents better the reality now that there are multiple returns. The function now to mark multiple returns (outputs) is RNA_def_function_output.

For an example, look at Action.get_frame_range in rna_action_api.c, by the way Aligorith I removed the #ifdef for this function now that there's support for returning arrays, feel free to modify (the function seems to work).

1 files changed, 2 insertions, 2 deletions

diff --git a/source/blender/python/intern/bpy_rna.h b/source/blender/python/intern/bpy_rna.h
index f7afeed05ce..284eef2c0e1 100644
--- a/source/blender/python/intern/bpy_rna.h
+++ b/source/blender/python/intern/bpy_rna.h
@@ -75,7 +75,7 @@ PyObject *pyrna_struct_CreatePyObject( PointerRNA *ptr );
 PyObject *pyrna_prop_CreatePyObject( PointerRNA *ptr, PropertyRNA *prop );
 
 /* operators also need this to set args */
-int pyrna_py_to_prop(PointerRNA *ptr, PropertyRNA *prop, void *data, PyObject *value, const char *error_prefix);
+int pyrna_py_to_prop(PointerRNA *ptr, PropertyRNA *prop, ParameterList *parms, void *data, PyObject *value, const char *error_prefix);
 int pyrna_pydict_to_props(PointerRNA *ptr, PyObject *kw, int all_args, const char *error_prefix);
 PyObject * pyrna_prop_to_py(PointerRNA *ptr, PropertyRNA *prop);
 
@@ -92,7 +92,7 @@ void pyrna_alloc_types(void);
 void pyrna_free_types(void);
 
 /* primitive type conversion */
-int pyrna_py_to_array(PointerRNA *ptr, PropertyRNA *prop, char *param_data, PyObject *py, const char *error_prefix);
+int pyrna_py_to_array(PointerRNA *ptr, PropertyRNA *prop, ParameterList *parms, char *param_data, PyObject *py, const char *error_prefix);
 int pyrna_py_to_array_index(PointerRNA *ptr, PropertyRNA *prop, int arraydim, int arrayoffset, int index, PyObject *py, const char *error_prefix);
 
 PyObject *pyrna_py_from_array(PointerRNA *ptr, PropertyRNA *prop);