Verified feat: add on pebble state backend and using sync Pool to reuse buffer []byte

1 files changed, 16 insertions, 2 deletions

diff --git a/core/state_backend.go b/core/state_backend.go
index 5870739..ae9fe1d 100644
--- a/core/state_backend.go
+++ b/core/state_backend.go
@@ -2,6 +2,9 @@ package core
 
 import (
         "context"
+        "encoding/json"
+        "fmt"
+
 )
 
 type StateBackend interface {
@@ -22,6 +25,7 @@ type stateBackendKeyType struct{}
 
 var stateBackendKey stateBackendKeyType
 
+// type adapter
 type typedValueState[T any] struct {
         inner ValueState[any]
 }
@@ -32,14 +36,24 @@ func CastValueType[T any](inner ValueState[any]) ValueState[T] {
 
 func (s *typedValueState[T]) Value(ctx context.Context) (T, error) {
         val, err := s.inner.Value(ctx)
+        var zero T
         if err != nil {
-                var zero T
                 return zero, err
         }
         if val == nil {
-                var zero T
                 return zero, nil
         }
+
+        if rawBytes, ok := val.([]byte); ok {
+                defer PutBuffer(rawBytes)
+
+                var result T
+                if err := json.Unmarshal(rawBytes, &result); err != nil {
+                        return zero, fmt.Errorf("failed to unmarshal state: %w", err)
+                }
+                return result, nil
+        }
+
         return val.(T), nil
 }