From 88ce934bd7902dd21cca932fba9de62e1fe2de90 Mon Sep 17 00:00:00 2001
From: Michael Vines <mvines@gmail.com>
Date: Thu, 28 Oct 2021 11:56:39 -0700
Subject: [PATCH] Derive thiserror::Error for ProofError

---
 zk-token-sdk/src/errors.rs          | 19 ++++++++++---------
 zk-token-sdk/src/instruction/mod.rs |  2 +-
 2 files changed, 11 insertions(+), 10 deletions(-)

diff --git a/zk-token-sdk/src/errors.rs b/zk-token-sdk/src/errors.rs
index 2aee36d4b..b2d47026c 100644
--- a/zk-token-sdk/src/errors.rs
+++ b/zk-token-sdk/src/errors.rs
@@ -1,19 +1,20 @@
 //! Errors related to proving and verifying proofs.
+use thiserror::Error;
 
-#[derive(Clone, Debug, Eq, PartialEq)]
+#[derive(Error, Clone, Debug, Eq, PartialEq)]
 pub enum ProofError {
-    /// This error occurs when a proof failed to verify.
+    #[error("proof failed to verify")]
     VerificationError,
-    /// This error occurs when the proof encoding is malformed.
+    #[error("malformed proof")]
     FormatError,
-    /// This error occurs during proving if the number of blinding
-    /// factors does not match the number of values.
+    #[error("number of blinding factors do not match the number of values")]
     WrongNumBlindingFactors,
-    /// This error occurs when attempting to create a proof with
-    /// bitsize other than \\(8\\), \\(16\\), \\(32\\), or \\(64\\).
+    #[error("attempted to create a proof with bitsize other than \\(8\\), \\(16\\), \\(32\\), or \\(64\\)")]
     InvalidBitsize,
-    /// This error occurs when there are insufficient generators for the proof.
+    #[error("insufficient generators for the proof")]
     InvalidGeneratorsLength,
-    /// This error occurs a `zk_token_elgamal::pod::ElGamalCiphertext` contains invalid ElGamalCiphertext ciphertext
+    #[error(
+        "`zk_token_elgamal::pod::ElGamalCiphertext` contains invalid ElGamalCiphertext ciphertext"
+    )]
     InconsistentCTData,
 }
diff --git a/zk-token-sdk/src/instruction/mod.rs b/zk-token-sdk/src/instruction/mod.rs
index 8c5b5a19f..62d563e0e 100644
--- a/zk-token-sdk/src/instruction/mod.rs
+++ b/zk-token-sdk/src/instruction/mod.rs
@@ -16,7 +16,7 @@ pub trait Verifiable {
 }
 
 #[cfg(not(target_arch = "bpf"))]
-#[derive(Debug,Copy,Clone)]
+#[derive(Debug, Copy, Clone)]
 pub enum Role {
     Source,
     Dest,