Add rename Hook.

Author: treeform

src/jsony.nim

@@ -244,6 +244,8 @@ proc parseJson[T:object|ref object](s: string, i: var int, v: var T) =
     var key: string
     parseJson(s, i, key)
     eat(s, i, ':')
+    when compiles(renameHook(v, key)):
+      renameHook(v, key)
     fieldsMacro(v, key)
     eatSpace(s, i)
     if s[i] == ',':

tests/test_objects.nim

@@ -144,3 +144,13 @@ block:
   var s = "null"
   var v = fromJson[Entry6](s)
   doAssert v == nil
+
+type Node = ref object
+  kind: string
+
+proc renameHook(v: var Node, fieldName: var string) =
+  if fieldName == "type":
+    fieldName = "kind"
+
+var node = fromJson[Node]("""{"type":"root"}""")
+doAssert node.kind == "root"