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nicer error message #238

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merged 1 commit into from
Jun 24, 2024
Merged

nicer error message #238

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9 changes: 7 additions & 2 deletions src/parser/ast.ml
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Original file line number Diff line number Diff line change
Expand Up @@ -70,6 +70,8 @@ module Term = struct
and quote = { data : string; loc : Loc.t; kind : string option }
[@@deriving show]

exception NotInProlog of Loc.t * string

let mkC x = CData x
let mkLam x t = Lam (Func.from_string x,t)
let mkNil = Const Func.nilf
Expand All @@ -83,7 +85,11 @@ let mkQuoted loc s =
match s.[i] with
| '{' -> find_data (i+1)
| ':' ->
let rec find_space i = match s.[i] with
let len = String.length s in
let rec find_space i =
if i >= len then
raise (NotInProlog(loc,"syntax error: bad named quotation: {{"^s^"}}.\nDid you separate the name from the data with a space as in {{:name data}} ?."));
match s.[i] with
| ' ' -> i
| '\n' -> i
| _ -> find_space (i+1) in
Expand All @@ -103,7 +109,6 @@ let mkSeq l =
in
aux l

exception NotInProlog of Loc.t * string

let rec best_effort_pp = function
| Lam (x,t) -> "x\\" ^ best_effort_pp t
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