How to get nested fields using reflection API?

[paulovap]

Hi @dbaileychess,

I am porting kotlin generator to use the reflection API, and I am having trouble to check if a field is nested. Originally I thought I could find this information in reflection::Field->attributes(), but for the samples I am running, this field is always returning null (testing against monster_test.fbs).

So, two questions:
1 - Shouldn't reflection::Field->attributes() be returning something for the annotated fields?
2 - How can I tell if a field is a nested flatbuffer.

Cheers!

[dbaileychess]

Will look into this. I attempted to make an annotated binary of monster_test.bfbs to look at the contents, and that failed for some reason. So I want to fix that first.

But yes, the attributes should contain the key-value pairs of the ones specified in the schema.

For #2, there should be the nested-flatbuffer annotation that would be used, so we need to figure out #1 first.

[dbaileychess]

OK, so there is some problem with --bfbs-filenames {path} option for generating .bfbs that I cannot annotate them. I will have to look into that. So i dropped that and ran:

../flatc -b --schema --bfbs-builtins --bfbs-comments -I include_test monster_test.fbs
../flatc --annotate ../reflection/reflection.fbs -- monster_test.bfbs

And searched through the monster_test.afb and saw:

string (reflection.KeyValue.key):
  +0x1204 | 11 00 00 00             | uint32_t      | 0x00000011 (17)                  | length of string
  +0x1208 | 6E 65 73 74 65 64 5F 66 | char[17]      | nested_f                         | string literal
  +0x1210 | 6C 61 74 62 75 66 66 65 |               | latbuffe
  +0x1218 | 72                      |               | r
  +0x1219 | 00                      | char          | 0x00 (0)                         | string terminator

Which shows nested_flatbuffer is embedded correctly.