package ppxlib

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Standard infrastructure for ppx rewriters

Install 

dune-project
 Dependency

github.com Readme Changelog MIT License Edit opam file Versions (24)

Authors

  1. J
    Jane Street Group, LLC <opensource@janestreet.com>

Maintainers

  1. O
    opensource@janestreet.com

Sources

2e150834476230e99e48dfdf34c5e4a1ea6e749b.tar.gz
sha256=591d694609fed01783c9f360602e8660ae0e49eb33b7074c1317a261e00c6cdb
sha512=e15e956a114ab3f61dfa8f7eceed088082a116f3b6fc832b901729f611258af3b39bda748b2046b4886f429617aa64802f90e0520db82302443ecbba461970b2

doc/src/ppxlib.astlib/encoding_503.ml.html

Source file encoding_503.ml

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module Ext_name = struct
  let ppat_effect = "ppxlib.migration.ppat_effect_503"
end

let invalid_encoding ~loc name = Error.invalid_encoding ~loc ~version:"5.3" name

module To_502 = struct
  let encode_ppat_effect ~loc ~effect_ ~k =
    let open Ast_502.Parsetree in
    Ppat_extension
      ( Location.{ txt = Ext_name.ppat_effect; loc },
        PPat
          ( {
              ppat_desc = Ppat_tuple [ effect_; k ];
              ppat_attributes = [];
              ppat_loc_stack = [];
              ppat_loc = loc;
            },
            None ) )

  let decode_ppat_effect ~loc payload =
    let open Ast_502.Parsetree in
    match payload with
    | PPat ({ ppat_desc = Ppat_tuple [ effect_; cont ]; _ }, None) ->
        (effect_, cont)
    | _ -> invalid_encoding ~loc Ext_name.ppat_effect
end