From ba866a07dc6820517c498b0e9453a1af5df3c8fc Mon Sep 17 00:00:00 2001
From: Daniel Liu <liudaniel@qq.com>
Date: Thu, 5 Jun 2025 16:19:34 +0800
Subject: [PATCH] trie: readonly interface for trie iterator resolver #24221

---
 trie/iterator.go | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/trie/iterator.go b/trie/iterator.go
index dc8b98c102d..47b1c1414bd 100644
--- a/trie/iterator.go
+++ b/trie/iterator.go
@@ -115,7 +115,7 @@ type NodeIterator interface {
 	// Before adding a similar mechanism to any other place in Geth, consider
 	// making trie.Database an interface and wrapping at that level. It's a huge
 	// refactor, but it could be worth it if another occurrence arises.
-	AddResolver(ethdb.KeyValueStore)
+	AddResolver(ethdb.KeyValueReader)
 }
 
 // nodeIteratorState represents the iteration state at one particular Node of the
@@ -134,7 +134,7 @@ type nodeIterator struct {
 	path  []byte               // Path to the current Node
 	err   error                // Failure set in case of an internal error in the iterator
 
-	resolver ethdb.KeyValueStore // Optional intermediate resolver above the disk layer
+	resolver ethdb.KeyValueReader // Optional intermediate resolver above the disk layer
 }
 
 // errIteratorEnd is stored in nodeIterator.err when iteration is done.
@@ -162,7 +162,7 @@ func newNodeIterator(trie *Trie, start []byte) NodeIterator {
 	return it
 }
 
-func (it *nodeIterator) AddResolver(resolver ethdb.KeyValueStore) {
+func (it *nodeIterator) AddResolver(resolver ethdb.KeyValueReader) {
 	it.resolver = resolver
 }
 
@@ -552,7 +552,7 @@ func (it *differenceIterator) Path() []byte {
 	return it.b.Path()
 }
 
-func (it *differenceIterator) AddResolver(resolver ethdb.KeyValueStore) {
+func (it *differenceIterator) AddResolver(resolver ethdb.KeyValueReader) {
 	panic("not implemented")
 }
 
@@ -663,7 +663,7 @@ func (it *unionIterator) Path() []byte {
 	return (*it.items)[0].Path()
 }
 
-func (it *unionIterator) AddResolver(resolver ethdb.KeyValueStore) {
+func (it *unionIterator) AddResolver(resolver ethdb.KeyValueReader) {
 	panic("not implemented")
 }