Module Reason_migrate_parsetree.Def

type missing_feature =
  1. | Pexp_letexception
  2. | Ppat_open
  3. | Pexp_unreachable
  4. | PSig
  5. | Pcstr_record
  6. | Pconst_integer
  7. | Pconst_float
  8. | Pcl_open
  9. | Pcty_open
  10. | Oinherit
  11. | Pwith_typesubst_longident
  12. | Pwith_modsubst_longident
  13. | Pexp_open
  14. | Pexp_letop
  15. | Psig_typesubst
  16. | Psig_modsubst
  17. | Otyp_module
  18. | Immediate64
  19. | Anonymous_let_module
  20. | Anonymous_unpack
  21. | Anonymous_module_binding
  22. | Anonymous_module_declaration

Features which are not available in all versions of the frontend

exception Migration_error of missing_feature * Location.t

Exception thrown by migration functions when a feature is not supported.

val missing_feature_description : missing_feature -> string

missing_feature_description x is a text describing the feature x.

val missing_feature_minimal_version : missing_feature -> string

missing_feature_minimal_version x is the OCaml version where x was introduced.

val migration_error_message : missing_feature -> string

Turn a missing feature into a reasonable error message.