From 2cae33cf6e22aaa6308a8289b8859f7334499618 Mon Sep 17 00:00:00 2001
From: Cecile Tonglet <cecile@parity.io>
Date: Thu, 11 Jun 2020 12:16:17 +0200
Subject: [PATCH] Impl Debug and Display for Ss58AddressFormat when compiled
 with std (#6327)

* Initial commit

Forked at: f5caf030aa522cf63506b7ea37248a162e1b6052
Parent branch: origin/master

* Impl Debug and Display for Ss58AddressFormat when compiled with std

Fixes #6289

* Use write! instead of writeln!
---
 substrate/primitives/core/src/crypto.rs | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/substrate/primitives/core/src/crypto.rs b/substrate/primitives/core/src/crypto.rs
index 73134dcbfa..b92eb8eab0 100644
--- a/substrate/primitives/core/src/crypto.rs
+++ b/substrate/primitives/core/src/crypto.rs
@@ -357,12 +357,20 @@ macro_rules! ss58_address_format {
 	( $( $identifier:tt => ($number:expr, $name:expr, $desc:tt) )* ) => (
 		/// A known address (sub)format/network ID for SS58.
 		#[derive(Copy, Clone, PartialEq, Eq)]
+		#[cfg_attr(feature = "std", derive(Debug))]
 		pub enum Ss58AddressFormat {
 			$(#[doc = $desc] $identifier),*,
 			/// Use a manually provided numeric value.
 			Custom(u8),
 		}
 
+		#[cfg(feature = "std")]
+		impl std::fmt::Display for Ss58AddressFormat {
+			fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
+				write!(f, "{:?}", self)
+			}
+		}
+
 		static ALL_SS58_ADDRESS_FORMATS: [Ss58AddressFormat; 0 $(+ { let _ = $number; 1})*] = [
 			$(Ss58AddressFormat::$identifier),*,
 		];