From 111207afe8c43bb0aced780810263700463a2e5e Mon Sep 17 00:00:00 2001
From: Benjamin Kampmann <ben@gnunicorn.org>
Date: Fri, 31 Jan 2020 20:01:32 +0100
Subject: [PATCH] Adding Serde Deserialisation to UncheckExtrinsics (#4793)
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* Adding Serde:Deserialise to UncheckExtrinsics

to be able to use the ChainApi RPC from the client side

* Update primitives/runtime/src/generic/unchecked_extrinsic.rs

Co-authored-by: Bastian Köcher <bkchr@users.noreply.github.com>
---
 .../runtime/src/generic/unchecked_extrinsic.rs      | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/substrate/primitives/runtime/src/generic/unchecked_extrinsic.rs b/substrate/primitives/runtime/src/generic/unchecked_extrinsic.rs
index 96e7988103..1625d42e93 100644
--- a/substrate/primitives/runtime/src/generic/unchecked_extrinsic.rs
+++ b/substrate/primitives/runtime/src/generic/unchecked_extrinsic.rs
@@ -274,6 +274,19 @@ impl<Address: Encode, Signature: Encode, Call: Encode, Extra: SignedExtension> s
 	}
 }
 
+#[cfg(feature = "std")]
+impl<'a, Address: Decode, Signature: Decode, Call: Decode, Extra: SignedExtension> serde::Deserialize<'a>
+	for UncheckedExtrinsic<Address, Call, Signature, Extra>
+{
+	fn deserialize<D>(de: D) -> Result<Self, D::Error> where
+		D: serde::Deserializer<'a>,
+	{
+		let r = sp_core::bytes::deserialize(de)?;
+		Decode::decode(&mut &r[..])
+			.map_err(|e| serde::de::Error::custom(format!("Decode error: {}", e)))
+	}
+}
+
 impl<Address, Call, Signature, Extra> fmt::Debug
 	for UncheckedExtrinsic<Address, Call, Signature, Extra>
 where