Method handle_with_position

src/server.rs:1416–1428

Position-based handler helper. Extracts the URI and position from the params, fetches file content, runs the closure inside a panic guard, and flattens the nested `Option`. Covers the majority of LSP handlers that take a `TextDocumentPositionParams` and return `Option `.

(
        &self,
        handler_name: &str,
        uri: &str,
        position: Position,
        f: impl FnOnce(&str, Position) -> Option<T>,
    )

    /// Covers the majority of LSP handlers that take a
    /// `TextDocumentPositionParams` and return `Option<T>`.
    fn handle_with_position<T>(
        &self,
        handler_name: &str,
        uri: &str,
        position: Position,
        f: impl FnOnce(&str, Position) -> Option<T>,
    ) -> Result<Option<T>> {
        Ok(self
            .with_file_content(handler_name, uri, Some(position), |content, pos| {
                f(content, pos.unwrap())
            })
            .flatten())
    }

    /// URI-only handler helper. Like [`handle_with_position`] but for
    /// handlers that only need the document URI (no cursor position).