From d80e1c96fa83bf800c494c029d90a2493b811b74 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C5=81ukasz=20Biel?= <lukasz.p.biel@gmail.com>
Date: Wed, 10 Feb 2021 18:11:03 +0100
Subject: [PATCH] Add IntoDeserializer implementation to Value enum

---
 src/value/mod.rs    | 10 +++++++++-
 tests/test_value.rs | 30 ++++++++++++++++++++++++++++++
 2 files changed, 39 insertions(+), 1 deletion(-)

diff --git a/src/value/mod.rs b/src/value/mod.rs
index 1365f957..031825e6 100644
--- a/src/value/mod.rs
+++ b/src/value/mod.rs
@@ -1,6 +1,6 @@
 use crate::ser::SerializerToYaml;
 use crate::{Error, Mapping};
-use serde::de::{Deserialize, DeserializeOwned};
+use serde::de::{Deserialize, DeserializeOwned, IntoDeserializer};
 use serde::Serialize;
 use std::f64;
 use std::hash::{Hash, Hasher};
@@ -633,6 +633,14 @@ impl Hash for Value {
     }
 }
 
+impl<'de> IntoDeserializer<'de, Error> for Value {
+    type Deserializer = Self;
+
+    fn into_deserializer(self) -> Self::Deserializer {
+        self
+    }
+}
+
 mod from;
 mod index;
 mod partial_eq;
diff --git a/tests/test_value.rs b/tests/test_value.rs
index 869c60f5..4e38b65c 100644
--- a/tests/test_value.rs
+++ b/tests/test_value.rs
@@ -1,5 +1,8 @@
 #![allow(clippy::eq_op)]
 
+use serde::de::IntoDeserializer;
+use serde::Deserialize;
+use serde_derive::Deserialize;
 use serde_yaml::{Number, Value};
 use std::f64;
 
@@ -23,3 +26,30 @@ fn test_digits() {
     let num_string = serde_yaml::from_str::<Value>("01").unwrap();
     assert!(num_string.is_string());
 }
+
+#[test]
+fn test_into_deserializer() {
+    let value = serde_yaml::from_str::<Value>("xyz").unwrap();
+    let s = String::deserialize(value.into_deserializer()).unwrap();
+    assert_eq!(s, "xyz");
+
+    let value = serde_yaml::from_str::<Value>("- first\n- second\n- third").unwrap();
+    let arr = Vec::<String>::deserialize(value.into_deserializer()).unwrap();
+    assert_eq!(arr, &["first", "second", "third"]);
+
+    #[derive(Debug, Deserialize, PartialEq)]
+    struct Test {
+        first: String,
+        second: u32,
+    }
+
+    let value = serde_yaml::from_str::<Value>("first: abc\nsecond: 99").unwrap();
+    let test = Test::deserialize(value.into_deserializer()).unwrap();
+    assert_eq!(
+        test,
+        Test {
+            first: "abc".to_string(),
+            second: 99
+        }
+    )
+}