# Module Source_code_position

    module Source_code_position: sig .. end

One typically obtains a `Source_code_position.t` using a `_here_` expression, which is implemented by the `pa_here` preprocessor.

    type t = Lexing.position = {

`` | `pos_fname : `string`;`
`` | `pos_lnum : `int`;`
`` | `pos_bol : `int`;`
`` | `pos_cnum : `int`;`

}

    type t_hum = t

    include Comparable.S

    include Hashable.S

    val to_string : t -> string

`to_string t` converts `t` to the form `"FILE:LINE:COL"`.

    module Stable: sig .. end

    val t_of_sexp : Sexplib.Sexp.t -> t

    val sexp_of_t : t -> Sexplib.Sexp.t

    val bin_t : t Bin_prot.Type_class.t

    val bin_read_t : t Bin_prot.Read.reader

    val __bin_read_t__ : (int -> t) Bin_prot.Read.reader

    val bin_reader_t : t Bin_prot.Type_class.reader

    val bin_size_t : t Bin_prot.Size.sizer

    val bin_write_t : t Bin_prot.Write.writer

    val bin_writer_t : t Bin_prot.Type_class.writer

    val sexp_of_t_hum : t_hum -> Sexplib.Sexp.t

`to_string t` converts `t` to the form `"FILE:LINE:COL"`.