It was outputting the type instead of the field name, and didn't deal
with NULL fields. Added test case.
Also fixed token enums having the wrong value, resulting in
unreadable error messages.
Change-Id: Icd9b4d22f417bfad5824c0f58e067ce3f2e2dc6f
Tested: on Windows and Linux.
New attribute:
- `id: n` (on a table field): manually set the field identifier to `n`.
If you use this attribute, you must use it on ALL fields of this table,
and the numbers must be a contiguous range from 0 onwards.
Additionally, since a union type effectively adds two fields, its
id must be that of the second field (the first field is the type
field and not explicitly declared in the schema).
For example, if the last field before the union field had id 6,
the union field should have id 8, and the unions type field will
implicitly be 7.
IDs allow the fields to be placed in any order in the schema.
When a new field is added to the schema is must use the next available ID.
Change-Id: I8690f105f3a2d31fdcb75a4fab4130692b12c62f
Tested: on Windows
Wouter van Oortmerssen