Other changes along the way:
1. In a couple of places we passed None as a dummy for for
`otherfields` where {} is just as good.
2. Turned bytes into hex for errors.
3. Remove nonsensical (unused) get_tlv_by_number() function from MessageNamespace
4. Renamed unrelated-but-overlapping `field_from_csv` and
`type_from_csv` static methods, since mypy thought they should have
the same type.
5. Unknown tlv fields are placed in dict as strings, not ints, for
type simplicity.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This will be useful for the next patch, which introduces per-bolt
modules. This makes it easier for them generate variables for each
field type they parse (they don't want to export u16, for example)
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Instead of val_to_bin/val_from_bin which deal with bytes, we implement
read and write which use streams. This simplifies the API.
Suggested-by: Christian Decker
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This supports infrasructure for creating messages. In particular, it
can be fed CSV from the spec's `tools/extract-formats.py` and then convert
them all to and from strings and binary formats.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Changelog-Added: pyln: new module pyln.proto.message
