41 lines
1.6 KiB
OCaml
41 lines
1.6 KiB
OCaml
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open! Trace
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let parse_file (source: string) : Ast.entry_point result =
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(* let pp_input =
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* let prefix = Filename.(source |> basename |> remove_extension)
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* and suffix = ".pp.ligo"
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* in prefix ^ suffix in
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*
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* let cpp_cmd = Printf.sprintf "cpp -traditional-cpp %s > %s"
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* source pp_input in
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* let%bind () = sys_command cpp_cmd in
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*
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* let%bind channel =
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* generic_try (simple_error "error opening file") @@
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* (fun () -> open_in pp_input) in *)
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let%bind channel =
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generic_try (simple_error "error opening file") @@
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(fun () -> open_in source) in
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let lexbuf = Lexing.from_channel channel in
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let module Lexer = Lex.Lexer in
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(specific_try (fun () -> fun e ->
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let error s () =
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let start = Lexing.lexeme_start_p lexbuf in
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let end_ = Lexing.lexeme_end_p lexbuf in
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let str () = Format.sprintf
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"at \"%s\" from (%d, %d) to (%d, %d)\n"
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(Lexing.lexeme lexbuf)
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start.pos_lnum (start.pos_cnum - start.pos_bol)
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end_.pos_lnum (end_.pos_cnum - end_.pos_bol) in
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error s str () in
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match e with
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| Parser.Error -> (fun () -> error (thunk "Parse") ())
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| Lexer.Error s -> (fun () -> error (fun () -> "Lexer " ^ s) ())
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| Lexer.Unexpected_character s -> error (fun () -> "Unexpected char " ^ s) (* TODO: this allows injection of ANSI escape codes in error messages, fix this. *)
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| _ -> simple_error "unrecognized parse_ error"
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)) @@ (fun () ->
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let raw = Parser.entry_point Lexer.token lexbuf in
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raw
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) >>? fun raw ->
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ok raw
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