32 lines
1018 B
OCaml
32 lines
1018 B
OCaml
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(* This module provides support for managing and printing errors when
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preprocessing C# source files. *)
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type message = string
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type start = Lexing.position
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type stop = Lexing.position
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type seg = start * stop
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let mk_seg buffer =
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Lexing.(lexeme_start_p buffer, lexeme_end_p buffer)
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type vline = int
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exception Lexer of (message * seg * vline)
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exception Parser of (message * seg * vline)
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let print (kind: string) (msg, (start, stop), vend) =
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let open Lexing in
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let delta = vend - stop.pos_lnum in
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let vstart = start.pos_lnum + delta
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in assert (msg <> "");
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prerr_endline
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((if kind = "" then msg else kind) ^ " error at line "
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^ string_of_int vstart ^ ", char "
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^ string_of_int (start.pos_cnum - start.pos_bol)
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^ (if stop.pos_lnum = start.pos_lnum
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then "--" ^ string_of_int (stop.pos_cnum - stop.pos_bol)
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else " to line " ^ string_of_int vend
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^ ", char "
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^ string_of_int (stop.pos_cnum - stop.pos_bol))
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^ (if kind = "" then "." else ":\n" ^ msg))
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