From 493d18b8292fc03aa4f835fd825dea1183f97466 Mon Sep 17 00:00:00 2001
From: Zahary Karadjov <zahary@gmail.com>
Date: Thu, 14 Jul 2022 15:08:22 +0300
Subject: [PATCH] Add findFieldIdx

---
 serialization/object_serialization.nim | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/serialization/object_serialization.nim b/serialization/object_serialization.nim
index 169631a..8b8ece5 100644
--- a/serialization/object_serialization.nim
+++ b/serialization/object_serialization.nim
@@ -247,6 +247,20 @@ proc fieldReadersTable*(RecordType, ReaderType: distinct type):
     tbl[] = makeFieldReadersTable(RecordType, ReaderType)
   return addr(tbl[])
 
+proc findFieldIdx*(fieldsTable: FieldReadersTable,
+                   fieldName: string,
+                   expectedFieldPos: var int): int =
+  for i in expectedFieldPos ..< fieldsTable.len:
+    if fieldsTable[i].fieldName == fieldName:
+      expectedFieldPos = i + 1
+      return i
+
+  for i in 0 ..< expectedFieldPos:
+    if fieldsTable[i].fieldName == fieldName:
+      return i
+
+  return -1
+
 proc findFieldReader*(fieldsTable: FieldReadersTable,
                       fieldName: string,
                       expectedFieldPos: var int): auto =