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RNA functions

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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).
This commit is contained in:
Elia Sarti
2010-01-24 10:51:59 +00:00
parent 7c21eb7cd5
commit 9733e902a5
14 changed files with 220 additions and 100 deletions
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12
source/blender/python/intern/bpy_array.c
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@@ -242,7 +242,7 @@ static char *copy_values(PyObject *seq, PointerRNA *ptr, PropertyRNA *prop, int
return data;
}
static int py_to_array(PyObject *py, PointerRNA *ptr, PropertyRNA *prop, char *param_data, ItemTypeCheckFunc check_item_type, const char *item_type_str, int item_size, ItemConvertFunc convert_item, RNA_SetArrayFunc rna_set_array, const char *error_prefix)
static int py_to_array(PyObject *py, PointerRNA *ptr, PropertyRNA *prop, ParameterList *parms, char *param_data, ItemTypeCheckFunc check_item_type, const char *item_type_str, int item_size, ItemConvertFunc convert_item, RNA_SetArrayFunc rna_set_array, const char *error_prefix)
{
int totdim, dim_size[MAX_ARRAY_DIMENSION];
int totitem;
@@ -266,6 +266,8 @@ static int py_to_array(PyObject *py, PointerRNA *ptr, PropertyRNA *prop, char *p
if (RNA_property_flag(prop) & PROP_DYNAMIC) {
/* not freeing allocated mem, RNA_parameter_list_free will do this */
*(char**)param_data= data;
RNA_parameter_length_set_data(parms, prop, param_data, totitem);
}
}
else {
@@ -358,18 +360,18 @@ static void bool_set_index(PointerRNA *ptr, PropertyRNA *prop, int index, void *
RNA_property_boolean_set_index(ptr, prop, index, *(int*)value);
}
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 ret;
switch (RNA_property_type(prop)) {
case PROP_FLOAT:
ret= py_to_array(py, ptr, prop, param_data, py_float_check, "float", sizeof(float), py_to_float, (RNA_SetArrayFunc)RNA_property_float_set_array, error_prefix);
ret= py_to_array(py, ptr, prop, parms, param_data, py_float_check, "float", sizeof(float), py_to_float, (RNA_SetArrayFunc)RNA_property_float_set_array, error_prefix);
break;
case PROP_INT:
ret= py_to_array(py, ptr, prop, param_data, py_int_check, "int", sizeof(int), py_to_int, (RNA_SetArrayFunc)RNA_property_int_set_array, error_prefix);
ret= py_to_array(py, ptr, prop, parms, param_data, py_int_check, "int", sizeof(int), py_to_int, (RNA_SetArrayFunc)RNA_property_int_set_array, error_prefix);
break;
case PROP_BOOLEAN:
ret= py_to_array(py, ptr, prop, param_data, py_bool_check, "boolean", sizeof(int), py_to_bool, (RNA_SetArrayFunc)RNA_property_boolean_set_array, error_prefix);
ret= py_to_array(py, ptr, prop, parms, param_data, py_bool_check, "boolean", sizeof(int), py_to_bool, (RNA_SetArrayFunc)RNA_property_boolean_set_array, error_prefix);
break;
default:
PyErr_SetString(PyExc_TypeError, "not an array type");