From 1e85116f4878b9c480db53c83445cf2b8db3667d Mon Sep 17 00:00:00 2001
From: finitemonkey <56678540+finitemonkey@users.noreply.github.com>
Date: Mon, 17 Apr 2023 13:01:09 +0100
Subject: [PATCH] Separate error offset from error message

---
 src/jsony.nim | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/jsony.nim b/src/jsony.nim
index 871dcb6..5c63c69 100644
--- a/src/jsony.nim
+++ b/src/jsony.nim
@@ -2,6 +2,7 @@ import jsony/objvar, std/json, std/options, std/parseutils, std/sets,
     std/strutils, std/tables, std/typetraits, std/unicode
 
 type JsonError* = object of ValueError
+  offset*: int
 
 const whiteSpace = {' ', '\n', '\t', '\r'}
 
@@ -27,7 +28,9 @@ proc parseHook*[T: distinct](s: string, i: var int, v: var T)
 
 template error(msg: string, i: int) =
   ## Shortcut to raise an exception.
-  raise newException(JsonError, msg & " At offset: " & $i)
+  var e = newException(JsonError, msg)
+  e.offset = i
+  raise e
 
 template eatSpace*(s: string, i: var int) =
   ## Will consume whitespace.