Now, the version of the main language as well as the version of
extensions is passed through the user context of sexp parsers.
Signed-off-by: Jeremie Dimino <jeremie@dimino.org>
Make it expand only to Value.t since the string only version wasn't really used.
Variable expansions are now Value.t list. Which also gives the flexibility for a
value to expand to a collection of more than 1 value.
Signed-off-by: Rudi Grinberg <rudi.grinberg@gmail.com>
These variables can occur outside actions so such expansions shouldn't live
under Var_expansion.
Signed-off-by: Rudi Grinberg <rudi.grinberg@gmail.com>
- remove hard-coded knowledge of ocaml-migrate-parsetree and ppx_driver
- get the exact driver parameters directly from the driver itself
Signed-off-by: Jeremie Dimino <jdimino@janestreet.com>
Split the select_backends between two functions:
- one for backends that support extensions
- one for backends that support replacement
it might be possible to support both at once, but for now this is
enough and it's simpler.
Encode optional fields as records where optional keys that are None will be
omitted in the resultant sexp. This will match reading the keys back with field_o
Jérémie Dimino
Rudi Grinberg
Jeremie Dimino