move ReadlinesError to error module

src/error.rs

@@ -590,6 +590,32 @@ impl From<JsonError> for JsonPayloadError {
     }
 }
 
+/// Error type returned when reading body as lines.
+pub enum ReadlinesError {
+    EncodingError,
+    PayloadError(PayloadError),
+    LimitOverflow,
+    ContentTypeError(ContentTypeError),
+}
+
+impl From<PayloadError> for ReadlinesError {
+    fn from(err: PayloadError) -> Self {
+        ReadlinesError::PayloadError(err)
+    }
+}
+
+impl From<Error> for ReadlinesError {
+    fn from(_: Error) -> Self {
+        ReadlinesError::EncodingError
+    }
+}
+
+impl From<ContentTypeError> for ReadlinesError {
+    fn from(err: ContentTypeError) -> Self {
+        ReadlinesError::ContentTypeError(err)
+    }
+}
+
 /// Errors which can occur when attempting to interpret a segment string as a
 /// valid path segment.
 #[derive(Fail, Debug, PartialEq)]

src/httpmessage.rs

@@ -13,7 +13,7 @@ use std::str;
 
 use error::{
     ContentTypeError, HttpRangeError, ParseError, PayloadError, UrlencodedError,
-    Error, ErrorBadRequest
+    Error, ErrorBadRequest, ReadlinesError
 };
 use header::Header;
 use json::JsonBody;
@@ -394,31 +394,6 @@ where
     }
 }
 
-pub enum ReadlinesError {
-    EncodingError,
-    PayloadError(PayloadError),
-    LimitOverflow,
-    ContentTypeError(ContentTypeError),
-}
-
-impl From<PayloadError> for ReadlinesError {
-    fn from(err: PayloadError) -> Self {
-        ReadlinesError::PayloadError(err)
-    }
-}
-
-impl From<Error> for ReadlinesError {
-    fn from(_: Error) -> Self {
-        ReadlinesError::EncodingError
-    }
-}
-
-impl From<ContentTypeError> for ReadlinesError {
-    fn from(err: ContentTypeError) -> Self {
-        ReadlinesError::ContentTypeError(err)
-    }
-}
-
 /// Future that resolves to a complete http message body.
 pub struct MessageBody<T> {
     limit: usize,