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62 lines
2.4 KiB
OCaml
62 lines
2.4 KiB
OCaml
(* This file is part of the Catala compiler, a specification language for tax
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and social benefits computation rules. Copyright (C) 2020 Inria, contributor:
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Denis Merigoux <denis.merigoux@inria.fr>
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Licensed under the Apache License, Version 2.0 (the "License"); you may not
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use this file except in compliance with the License. You may obtain a copy of
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the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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License for the specific language governing permissions and limitations under
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the License. *)
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(** Error formatting and helper functions *)
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(** {1 Error exception and printing} *)
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exception StructuredError of (string * (string option * Pos.t) list)
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(** The payload of the expression is a main error message, with a list of
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secondary positions related to the error, each carrying an optional
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secondary message to describe what is pointed by the position. *)
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let print_structured_error (msg : string) (pos : (string option * Pos.t) list) :
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string =
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Printf.sprintf "%s%s%s" msg
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(if List.length pos = 0 then "" else "\n\n")
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(String.concat "\n\n"
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(List.map
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(fun (msg, pos) ->
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Printf.sprintf "%s%s"
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(match msg with None -> "" | Some msg -> msg ^ "\n")
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(Pos.retrieve_loc_text pos))
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pos))
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(** {1 Error exception and printing} *)
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let raise_spanned_error ?(span_msg : string option) (span : Pos.t) format =
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Format.kasprintf
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(fun msg -> raise (StructuredError (msg, [ (span_msg, span) ])))
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format
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let raise_multispanned_error (spans : (string option * Pos.t) list) format =
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Format.kasprintf (fun msg -> raise (StructuredError (msg, spans))) format
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let raise_error format =
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Format.kasprintf (fun msg -> raise (StructuredError (msg, []))) format
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(** {1 Warning printing}*)
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let format_multispanned_warning (pos : (string option * Pos.t) list) format =
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Format.kasprintf
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(fun msg -> Cli.warning_print "%s" (print_structured_error msg pos))
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format
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let format_spanned_warning ?(span_msg : string option) (span : Pos.t) format =
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format_multispanned_warning [ (span_msg, span) ] format
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let format_warning format = format_multispanned_warning [] format
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