fill in visitor for inline value

Cargo.toml

@@ -57,15 +57,15 @@ kv_unstable_serde = ["kv_unstable_std", "value-bag/serde", "serde"]
 serde = { version = "1.0", optional = true, default-features = false }
 sval = { version = "2.1", optional = true, default-features = false }
 sval_ref = { version = "2.1", optional = true, default-features = false }
-value-bag = { version = "1.4", optional = true, default-features = false, features = ["inline-i128"] }
+value-bag = { version = "1.7", optional = true, default-features = false, features = ["inline-i128"] }
 
 [dev-dependencies]
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"
 serde_test = "1.0"
 sval = { version = "2.1" }
 sval_derive = { version = "2.1" }
-value-bag = { version = "1.4", features = ["test"] }
+value-bag = { version = "1.7", features = ["test"] }
 
 # NOTE: log doesn't actually depent on this crate. However our dependencies,
 # serde and sval, dependent on version 1.0 of the crate, which has problem fixed

src/kv/value.rs

@@ -611,6 +611,10 @@ pub(in crate::kv) mod inner {
                     .map_err(crate::kv::Error::into_value)
             }
 
+            fn visit_empty(&mut self) -> Result<(), Error> {
+                self.0.visit_null().map_err(crate::kv::Error::into_value)
+            }
+
             fn visit_u64(&mut self, value: u64) -> Result<(), Error> {
                 self.0
                     .visit_u64(value)
@@ -1005,8 +1009,20 @@ pub(in crate::kv) mod inner {
         }
     }
 
-    pub fn visit<'v>(inner: &Inner<'v>, visitor: impl Visitor<'v>) -> Result<(), crate::kv::Error> {
-        todo!()
+    pub fn visit<'v>(inner: &Inner<'v>, mut visitor: impl Visitor<'v>) -> Result<(), crate::kv::Error> {
+        match inner {
+            Inner::None => visitor.visit_null(),
+            Inner::Bool(v) => visitor.visit_bool(*v),
+            Inner::Str(v) => visitor.visit_borrowed_str(*v),
+            Inner::Char(v) => visitor.visit_char(*v),
+            Inner::I64(v) => visitor.visit_i64(*v),
+            Inner::U64(v) => visitor.visit_u64(*v),
+            Inner::F64(v) => visitor.visit_f64(*v),
+            Inner::I128(v) => visitor.visit_i128(*v),
+            Inner::U128(v) => visitor.visit_u128(*v),
+            Inner::Debug(v) => visitor.visit_any(Value::from_dyn_debug(*v)),
+            Inner::Display(v) => visitor.visit_any(Value::from_dyn_display(*v)),
+        }
     }
 }