From 376d9c1896d6e23970071a6e9da01f9f0842c0d0 Mon Sep 17 00:00:00 2001
From: Harald Eilertsen <haraldei@anduin.net>
Date: Sun, 24 Feb 2019 10:48:36 +0100
Subject: Let errors propagate out of main too.

Makes error messages from the program slightly nicer, but still a
bit cryptic for the casual user.
---
 src/error.rs | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

(limited to 'src/error.rs')

diff --git a/src/error.rs b/src/error.rs
index ed17362..b0ab95d 100644
--- a/src/error.rs
+++ b/src/error.rs
@@ -27,6 +27,26 @@ pub enum Error {
     JsonError(serde_json::error::Error),
 }
 
+impl std::fmt::Display for Error {
+    fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
+        match self {
+            Error::InvalidHeaderValue(e) => e.fmt(f),
+            Error::ReqwestError(e) => e.fmt(f),
+            Error::JsonError(e) => e.fmt(f),
+        }
+    }
+}
+
+impl std::error::Error for Error {
+    fn cause(&self) -> Option<&std::error::Error> {
+        match self {
+            Error::InvalidHeaderValue(e) => Some(e),
+            Error::ReqwestError(e) => Some(e),
+            Error::JsonError(e) => Some(e),
+        }
+    }
+}
+
 impl From<reqwest::header::InvalidHeaderValue> for Error {
     fn from(err: reqwest::header::InvalidHeaderValue) -> Error {
         Error::InvalidHeaderValue(err)
-- 
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