2.5: RNA, defining enums, pointers and collections properties is now

possible from python, but it's still work in progress.

Pointers and collections are restricted to types derived from
IDPropertyGroup (same as for operators), because RNA knows how to
allocate/deallocate those.

Collections have .add() and .remove(number) functions that can be
used. The remove function should be fixed to take an other argument
than a number.

With the IDPropertyGroup restriction, pointers are more like nested
structs. They don't have add(), remove() yet, not sure where to put
them. Currently the pointer / nested struct is automatically allocated
in the get() function, this needs to be fixed, rule is that RNA get()
will not change any data for thread safety.

Also, it is only possible to add properties to structs after they have
been registered, which needs to be improved as well.

Example code:
http://www.pasteall.org/7201/python

2 files changed, 6 insertions, 7 deletions

diff --git a/source/blender/blenloader/intern/readfile.c b/source/blender/blenloader/intern/readfile.c
index 9272c6fe353..61f6cb8b44c 100644
--- a/source/blender/blenloader/intern/readfile.c
+++ b/source/blender/blenloader/intern/readfile.c
@@ -1366,7 +1366,7 @@ void IDP_LibLinkProperty(IDProperty *prop, int switch_endian, FileData *fd);
 
 static void IDP_DirectLinkIDPArray(IDProperty *prop, int switch_endian, FileData *fd)
 {
-	IDProperty **array;
+	IDProperty *array;
 	int i;
 
 	/*since we didn't save the extra buffer, set totallen to len.*/
@@ -1374,11 +1374,10 @@ static void IDP_DirectLinkIDPArray(IDProperty *prop, int switch_endian, FileData
 	prop->data.pointer = newdataadr(fd, prop->data.pointer);
 
 	if (switch_endian) {
-		test_pointer_array(fd, prop->data.pointer);
-		array= (IDProperty**) prop->data.pointer;
+		array= (IDProperty*) prop->data.pointer;
 
 		for(i=0; i<prop->len; i++)
-			IDP_DirectLinkProperty(array[i], switch_endian, fd);
+			IDP_DirectLinkProperty(&array[i], switch_endian, fd);
 	}
 }
 
diff --git a/source/blender/blenloader/intern/writefile.c b/source/blender/blenloader/intern/writefile.c
index cd388cdf9cc..9d059af9887 100644
--- a/source/blender/blenloader/intern/writefile.c
+++ b/source/blender/blenloader/intern/writefile.c
@@ -407,13 +407,13 @@ static void IDP_WriteIDPArray(IDProperty *prop, void *wd)
 {
 	/*REMEMBER to set totalen to len in the linking code!!*/
 	if (prop->data.pointer) {
-		IDProperty **array = prop->data.pointer;
+		IDProperty *array = prop->data.pointer;
 		int a;
 
-		writedata(wd, DATA, MEM_allocN_len(prop->data.pointer), prop->data.pointer);
+		writestruct(wd, DATA, "IDProperty", prop->len, array);
 
 		for(a=0; a<prop->len; a++)
-			IDP_WriteProperty(array[a], wd);
+			IDP_WriteProperty_OnlyData(&array[a], wd);
 	}
 }