From 70f30d88f13eb3e71f1a5c57dc8d11bc1710c8eb Mon Sep 17 00:00:00 2001
From: waruto <wmc314@outlook.com>
Date: Tue, 17 Jan 2023 20:24:55 +0800
Subject: [PATCH] add key-to-lowercase for borrowed value

---
 src/value/borrowed.rs | 13 +++++++++++++
 src/value/owned.rs    | 18 +++++++++++++-----
 2 files changed, 26 insertions(+), 5 deletions(-)

diff --git a/src/value/borrowed.rs b/src/value/borrowed.rs
index 5b379599..48ba36b9 100644
--- a/src/value/borrowed.rs
+++ b/src/value/borrowed.rs
@@ -425,6 +425,9 @@ impl<'de> BorrowDeserializer<'de> {
         // element so we eat this
         for _ in 0..len {
             if let Node::String(key) = unsafe { self.0.next_() } {
+                #[cfg(feature = "key-to-lowercase")]
+                let key = key.to_ascii_lowercase();
+
                 #[cfg(not(feature = "value-no-dup-keys"))]
                 res.insert_nocheck(key.into(), self.parse());
                 #[cfg(feature = "value-no-dup-keys")]
@@ -1051,4 +1054,14 @@ mod test {
         let v: Value = v.into();
         assert_eq!(v, 42);
     }
+
+    #[cfg(feature = "key-to-lowercase")]
+    #[test]
+    fn test_key_to_lowercase() {
+        let mut data = br#"{"A": 1}"#.to_vec();
+        let ret = crate::to_borrowed_value(&mut data);
+        assert!(ret.is_ok());
+        let v = ret.unwrap();
+        assert_eq!(v.get_i32("a"), Some(1));
+    }
 }
diff --git a/src/value/owned.rs b/src/value/owned.rs
index b5023402..5e759360 100644
--- a/src/value/owned.rs
+++ b/src/value/owned.rs
@@ -363,14 +363,12 @@ impl<'de> OwnedDeserializer<'de> {
         for _ in 0..len {
             if let Node::String(key) = unsafe { self.de.next_() } {
                 #[cfg(feature = "key-to-lowercase")]
-                let k = key.to_ascii_lowercase();
-                #[cfg(not(feature = "key-to-lowercase"))]
-                let k = key.to_string();
+                let key = key.to_ascii_lowercase();
 
                 #[cfg(not(feature = "value-no-dup-keys"))]
-                res.insert_nocheck(k, self.parse());
+                res.insert_nocheck(key.into(), self.parse());
                 #[cfg(feature = "value-no-dup-keys")]
-                res.insert(k, self.parse());
+                res.insert(key.into(), self.parse());
             } else {
                 unreachable!();
             }
@@ -978,4 +976,14 @@ mod test {
         let v: Value = v.into();
         assert_eq!(v, 42);
     }
+
+    #[cfg(feature = "key-to-lowercase")]
+    #[test]
+    fn test_key_to_lowercase() {
+        let mut data = br#"{"A": 1}"#.to_vec();
+        let ret = crate::to_owned_value(&mut data);
+        assert!(ret.is_ok());
+        let v = ret.unwrap();
+        assert_eq!(v.get_i32("a"), Some(1));
+    }
 }