31 lines
977 B
OCaml
31 lines
977 B
OCaml
open Lexing
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(* A place is a pair of a start position and an end position. *)
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type place =
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position * position
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(* [set_filename lexbuf filename] updates [lexbuf] to record the
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fact that the current file name is [filename]. This file name
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is later used in error messages. *)
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val set_filename: lexbuf -> string -> unit
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(* [place lexbuf] produces a pair of the current token's start and
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end positions. This function is useful when reporting an error
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during lexing. *)
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val place: lexbuf -> place
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(* [error place format ...] displays an error message and exits.
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The error message is located at [place]. The error message
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is composed based on [format] and the extra arguments [...]. *)
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val error: place -> ('a, out_channel, unit, 'b) format4 -> 'a
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(* [pp_place formatter place] prints a place. It is used by
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[@@deriving show] for data structures that contain places.
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As of now, it prints nothing. *)
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val pp_place: Format.formatter -> place -> unit
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