api: Allow kObjectTypeNil to be zero without breaking compatibility

This commit is contained in:
ZyX
2017-01-22 04:55:26 +03:00
parent 6b4a51f7ea
commit ca4c8b7f8a
2 changed files with 27 additions and 6 deletions

View File

@@ -20,13 +20,20 @@
static msgpack_zone zone;
static msgpack_sbuffer sbuffer;
/// Value by which objects represented as EXT type are shifted
///
/// Subtracted when packing, added when unpacking. Used to allow moving
/// buffer/window/tabpage block inside ObjectType enum. This block yet cannot be
/// split or reordered.
#define EXT_OBJECT_TYPE_SHIFT kObjectTypeBuffer
#define HANDLE_TYPE_CONVERSION_IMPL(t, lt) \
bool msgpack_rpc_to_##lt(const msgpack_object *const obj, \
Integer *const arg) \
FUNC_ATTR_NONNULL_ALL \
{ \
if (obj->type != MSGPACK_OBJECT_EXT \
|| obj->via.ext.type != kObjectType##t) { \
|| obj->via.ext.type + EXT_OBJECT_TYPE_SHIFT != kObjectType##t) { \
return false; \
} \
\
@@ -51,7 +58,8 @@ static msgpack_sbuffer sbuffer;
msgpack_packer pac; \
msgpack_packer_init(&pac, &sbuffer, msgpack_sbuffer_write); \
msgpack_pack_int64(&pac, (handle_T)o); \
msgpack_pack_ext(res, sbuffer.size, kObjectType##t); \
msgpack_pack_ext(res, sbuffer.size, \
kObjectType##t - EXT_OBJECT_TYPE_SHIFT); \
msgpack_pack_ext_body(res, sbuffer.data, sbuffer.size); \
msgpack_sbuffer_clear(&sbuffer); \
}
@@ -211,7 +219,7 @@ bool msgpack_rpc_to_object(const msgpack_object *const obj, Object *const arg)
break;
}
case MSGPACK_OBJECT_EXT: {
switch (cur.mobj->via.ext.type) {
switch ((ObjectType)(cur.mobj->via.ext.type + EXT_OBJECT_TYPE_SHIFT)) {
case kObjectTypeBuffer: {
cur.aobj->type = kObjectTypeBuffer;
ret = msgpack_rpc_to_buffer(cur.mobj, &cur.aobj->data.integer);
@@ -227,6 +235,15 @@ bool msgpack_rpc_to_object(const msgpack_object *const obj, Object *const arg)
ret = msgpack_rpc_to_tabpage(cur.mobj, &cur.aobj->data.integer);
break;
}
case kObjectTypeNil:
case kObjectTypeBoolean:
case kObjectTypeInteger:
case kObjectTypeFloat:
case kObjectTypeString:
case kObjectTypeArray:
case kObjectTypeDictionary: {
break;
}
}
break;
}
@@ -350,6 +367,9 @@ void msgpack_rpc_from_object(const Object result, msgpack_packer *const res)
kv_push(stack, ((APIToMPObjectStackItem) { &result, false, 0 }));
while (kv_size(stack)) {
APIToMPObjectStackItem cur = kv_last(stack);
STATIC_ASSERT(kObjectTypeWindow == kObjectTypeBuffer + 1
&& kObjectTypeTabpage == kObjectTypeWindow + 1,
"Buffer, window and tabpage enum items are in order");
switch (cur.aobj->type) {
case kObjectTypeNil: {
msgpack_pack_nil(res);