From 77182276625157643fc9a1cd8949496cc71bc0f0 Mon Sep 17 00:00:00 2001
From: Emery Hemingway <ehmry@posteo.net>
Date: Sun, 14 May 2023 22:56:00 +0100
Subject: [PATCH] Add step proc for symbols

---
 src/preserves.nim | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/preserves.nim b/src/preserves.nim
index 23ceeba..f6356f1 100644
--- a/src/preserves.nim
+++ b/src/preserves.nim
@@ -273,6 +273,14 @@ func step*(pr, idx: Preserve): Option[Preserve] =
     if i < pr.len:
       result = some(pr[i])
 
+func step*[E](pr: Preserve[E]; key: Symbol): Option[Preserve[E]] =
+  ## Step into dictionary by a `Symbol` key.
+  if pr.isDictionary:
+    for (k, v) in pr.dict.items:
+      if k.isSymbol and k.symbol == key:
+        result = some(v)
+        break
+
 proc `[]=`*(pr: var Preserve; key, val: Preserve) =
   ## Insert `val` by `key` in the Preserves dictionary `pr`.
   for i in 0..pr.dict.high: