feat(error): add Error::message (#2737)

davidpdrsn · web-flow · commit 6932896a7fca · 2022-02-04T17:10:00.000-08:00
This adds Error::message which returns the message that is unique to the error, without the message from the source. That way users can create a newtype around hyper::Error and use this in the Display impl to work around #2732. Closes #2732
diff --git a/src/error.rs b/src/error.rs
@@ -396,6 +396,11 @@ impl Error {
         }
     }
 
+    /// The error's standalone message, without the message from the source.
+    pub fn message(&self) -> impl fmt::Display + '_ {
+        self.description()
+    }
+
     fn description(&self) -> &str {
         match self.inner.kind {
             Kind::Parse(Parse::Method) => "invalid HTTP method parsed",

Original file line number	Diff line number	Diff line change
`@@ -396,6 +396,11 @@ impl Error {`
`396`	`396`	`}`
`397`	`397`	`}`
`398`	`398`
	`399`	`+ /// The error's standalone message, without the message from the source.`
	`400`	`+ pub fn message(&self) -> impl fmt::Display + '_ {`
	`401`	`+ self.description()`
	`402`	`+ }`
	`403`	`+`
`399`	`404`	`fn description(&self) -> &str {`
`400`	`405`	`match self.inner.kind {`
`401`	`406`	`Kind::Parse(Parse::Method) => "invalid HTTP method parsed",`