From 2060e5a1a5364e79f6acbc115e1b2b0027b3ce7d Mon Sep 17 00:00:00 2001
From: Mahmud Ridwan <m@hjr265.me>
Date: Sun, 18 Apr 2021 16:14:01 +0600
Subject: [PATCH] Apply same filters when producing struct values

Closes #53
---
 diff_struct.go | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/diff_struct.go b/diff_struct.go
index 57298b5..4e7045f 100644
--- a/diff_struct.go
+++ b/diff_struct.go
@@ -65,6 +65,7 @@ func (d *Differ) diffStruct(path []string, a, b reflect.Value) error {
 
 func (d *Differ) structValues(t string, path []string, a reflect.Value) error {
 	var nd Differ
+	nd.Filter = d.Filter
 
 	if t != CREATE && t != DELETE {
 		return ErrInvalidChangeType
@@ -98,6 +99,10 @@ func (d *Differ) structValues(t string, path []string, a reflect.Value) error {
 
 		fpath := copyAppend(path, tname)
 
+		if nd.Filter != nil && !nd.Filter(fpath, a.Type(), field) {
+			continue
+		}
+
 		err := nd.diff(fpath, xf, af, a.Interface())
 		if err != nil {
 			return err