client-api: Update message::get_message_events::v3::Request's constructors

crates/ruma-client-api/CHANGELOG.md

@@ -5,9 +5,12 @@ Breaking changes:
 * Remove `PartialEq` implementations for a number of types
   * If the lack of such an `impl` causes problems, please open a GitHub issue
 * Split `uiaa::UserIdentifier::ThirdParty` into two separate variants
-* Remove `message::get_message_events::v3::Request::new`'s `from` parameter
-  * This parameter is now optional, and can be set after initial construction, or by using one of
-    the other constructors
+* Update `message::get_message_events::v3::Request`'s constructors because the `from` field is now
+  optional
+  * `new` has no `from` parameter anymore
+  * `backward` and `forward` now have `from` as an optional parameter
+  * Constructors `backward_from` and `forward_from` have been added with the previous signatures of
+    `backward` and `forward`
 * `receipt::create_receipt` uses its own `ReceiptType`
 
 Improvements:

crates/ruma-client-api/src/message/get_message_events.rs

@@ -111,42 +111,56 @@ pub mod v3 {
             }
         }
 
-        /// Creates a new `Request` with the given room ID and from token, and `dir` set to
-        /// `Backward`.
-        pub fn backward(room_id: &'a RoomId, from: &'a str) -> Self {
-            assign!(Self::new(room_id, Direction::Backward), { from: Some(from) })
+        /// Creates a new `Request` with the given room ID and optional `from` token, and `dir` set
+        /// to `Backward`.
+        ///
+        /// `Request::backward(room_id, Some(from))` can also be written as
+        /// `Request::backward_from(room_id, from)`.\
+        /// `Request::backward(room_id, None)` can also be written as `Request::from_end(room_id)`.
+        pub fn backward(room_id: &'a RoomId, from: Option<&'a str>) -> Self {
+            assign!(Self::new(room_id, Direction::Backward), { from })
         }
 
-        /// Creates a new `Request` with the given room ID and from token, and `dir` set to
+        /// Creates a new `Request` with the given room ID and optional `from` token, and `dir` set
+        /// to `Forward`.
+        ///
+        /// `Request::forward(room_id, Some(from))` can also be written as
+        /// `Request::forward_from(room_id, from)`.\
+        /// `Request::forward(room_id, None)` can also be written as `Request::from_start(room_id)`.
+        pub fn forward(room_id: &'a RoomId, from: Option<&'a str>) -> Self {
+            assign!(Self::new(room_id, Direction::Forward), { from })
+        }
+
+        /// Creates a new `Request` with the given room ID and `from` token, and `dir` set to
+        /// `Backward`.
+        ///
+        /// Equivalent to `Request::backward(room_id, Some(from))`.
+        pub fn backward_from(room_id: &'a RoomId, from: &'a str) -> Self {
+            Self::backward(room_id, Some(from))
+        }
+
+        /// Creates a new `Request` with the given room ID and `from` token, and `dir` set to
         /// `Forward`.
-        pub fn forward(room_id: &'a RoomId, from: &'a str) -> Self {
-            assign!(Self::new(room_id, Direction::Forward), { from: Some(from) })
+        ///
+        /// Equivalent to `Request::forward(room_id, Some(from))`.
+        pub fn forward_from(room_id: &'a RoomId, from: &'a str) -> Self {
+            Self::forward(room_id, Some(from))
         }
 
         /// Creates a new `Request` to fetch messages from the very start of the available history
         /// for a given room.
+        ///
+        /// Equivalent to `Request::forward(room_id, None)`.
         pub fn from_start(room_id: &'a RoomId) -> Self {
-            Self {
-                room_id,
-                from: None,
-                to: None,
-                dir: Direction::Forward,
-                limit: default_limit(),
-                filter: RoomEventFilter::default(),
-            }
+            Self::forward(room_id, None)
         }
 
         /// Creates a new `Request` to fetch messages from the very end of the available history for
         /// a given room.
+        ///
+        /// Equivalent to `Request::backward(room_id, None)`.
         pub fn from_end(room_id: &'a RoomId) -> Self {
-            Self {
-                room_id,
-                from: None,
-                to: None,
-                dir: Direction::Backward,
-                limit: default_limit(),
-                filter: RoomEventFilter::default(),
-            }
+            Self::backward(room_id, None)
         }
     }