Implement some more commands

src/commands/queue/plchangesposid.rs

@@ -0,0 +1,38 @@
+use crate::{
+    commands::{
+        Command, RequestParserError, RequestParserResult, ResponseAttributes, ResponseParserError,
+    },
+    Request,
+};
+
+pub struct PlChangesPosId;
+
+impl Command for PlChangesPosId {
+    type Response = ();
+    const COMMAND: &'static str = "plchangesposid";
+
+    fn parse_request(mut parts: std::str::SplitWhitespace<'_>) -> RequestParserResult<'_> {
+        let version = parts.next().ok_or(RequestParserError::UnexpectedEOF)?;
+        let version = version
+            .parse()
+            .map_err(|_| RequestParserError::SyntaxError(0, version.to_string()))?;
+
+        let window = parts
+            .next()
+            .map(|w| {
+                w.parse()
+                    .map_err(|_| RequestParserError::SyntaxError(0, w.to_string()))
+            })
+            .transpose()?;
+
+        debug_assert!(parts.next().is_none());
+
+        Ok((Request::PlChangesPosId(version, window), ""))
+    }
+
+    fn parse_response(
+        parts: ResponseAttributes<'_>,
+    ) -> Result<Self::Response, ResponseParserError> {
+        unimplemented!()
+    }
+}