remove quick_error

quick_error used the deprecated Error::cause interface, therefore we
want to use our own error enums with proper methods.

1 files changed, 29 insertions, 14 deletions

diff --git a/src/bt.rs b/src/bt.rs
index 21078ff..cf95f3c 100644
--- a/src/bt.rs
+++ b/src/bt.rs
@@ -1,20 +1,35 @@
 use super::api::{Api, ApiError, Skill, Specialization};
 use num_enum::{IntoPrimitive, TryFromPrimitive};
-use std::{convert::TryFrom, fmt, str::FromStr};
-
-quick_error! {
-    #[derive(Debug)]
-    pub enum ChatlinkError {
-        ApiError(err: ApiError) {
-            cause(err)
-            from()
+use std::{convert::TryFrom, error::Error, fmt, str::FromStr};
+
+#[derive(Debug)]
+pub enum ChatlinkError {
+    ApiError(ApiError),
+    MalformedInput,
+}
+
+error_froms! { ChatlinkError,
+    err: ApiError => ChatlinkError::ApiError(err),
+    _err: base64::DecodeError => ChatlinkError::MalformedInput,
+    _err: num_enum::TryFromPrimitiveError<Profession> => ChatlinkError::MalformedInput,
+    _err: num_enum::TryFromPrimitiveError<TraitChoice> => ChatlinkError::MalformedInput,
+    _err: num_enum::TryFromPrimitiveError<Legend> => ChatlinkError::MalformedInput,
+}
+
+impl fmt::Display for ChatlinkError {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        match *self {
+            ChatlinkError::ApiError(_) => write!(f, "error accessing the API"),
+            ChatlinkError::MalformedInput => write!(f, "the input link is malformed"),
         }
-        MalformedInput {
-            description("The input link is malformed")
-            from(base64::DecodeError)
-            from(num_enum::TryFromPrimitiveError<Profession>)
-            from(num_enum::TryFromPrimitiveError<TraitChoice>)
-            from(num_enum::TryFromPrimitiveError<Legend>)
+    }
+}
+
+impl Error for ChatlinkError {
+    fn source(&self) -> Option<&(dyn Error + 'static)> {
+        match *self {
+            ChatlinkError::ApiError(ref err) => Some(err),
+            _ => None,
         }
     }
 }