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|
open Ppxlib
let derive_a_string ~ctxt (_rec_flag, _type_declarations) =
let loc = Expansion_context.Deriver.derived_item_loc ctxt in
let open Ast_builder.Default in
[
pstr_value ~loc Nonrecursive
[
{
pvb_pat = ppat_any ~loc;
pvb_expr = estring ~loc "derived_string";
pvb_attributes = [];
pvb_loc = loc;
pvb_constraint = None;
};
];
]
let impl_generator_derive_a_string =
Deriving.Generator.V2.make_noarg derive_a_string
let deriver_for_a_string =
Deriving.add "a_string" ~str_type_decl:impl_generator_derive_a_string
let impl_generator_dependent =
Deriving.Generator.V2.make_noarg ~deps:[ deriver_for_a_string ]
derive_a_string
let _dependent_deriver =
Deriving.add "a_dependent_string" ~str_type_decl:impl_generator_dependent
let () = Driver.standalone ()
|
