Repository: helix-editor/helix
File: helix-lsp/src/client.rs (Rust)

Code before:
        match capabilities.inlay_hint_provider {
            Some(
                lsp::OneOf::Left(true)
                | lsp::OneOf::Right(lsp::InlayHintServerCapabilities::Options(_)),
            ) => (),
            _ => return None,
        }

        let params = lsp::InlayHintParams {
            text_document,
            range,
            work_done_progress_params: lsp::WorkDoneProgressParams { work_done_token },
        };

        Some(self.call::<lsp::request::InlayHintRequest>(params))
    }

    pub fn text_document_color_swatches(
        &self,
        text_document: lsp::TextDocumentIdentifier,
        work_done_token: Option<lsp::ProgressToken>,
    ) -> Option<impl Future<Output = Result<Value>>> {
        match self.capabilities.get().unwrap().color_provider {
            Some(_) => (),
            _ => return None,
        }

        let params = lsp::DocumentColorParams {
            text_document,
            work_done_progress_params: lsp::WorkDoneProgressParams {
                work_done_token: work_done_token.clone(),
            },
            partial_result_params: helix_lsp_types::PartialResultParams {
                partial_result_token: work_done_token,
            },
        };

        Some(self.call::<lsp::request::DocumentColor>(params))
    }

    pub fn text_document_hover(
        &self,
        text_document: lsp::TextDocumentIdentifier,
        position: lsp::Position,
        work_done_token: Option<lsp::ProgressToken>,
    ) -> Option<impl Future<Output = Result<Value>>> {
        let capabilities = self.capabilities.get().unwrap();

        // Return early if the server does not support hover.
        match capabilities.hover_provider {
            Some(

Review comment (suggestion):
```suggestion
        if self.capabilities.get().unwrap().color_provider.is_none() {
            return None;
        }
```

Code after:
        text_document: lsp::TextDocumentIdentifier,
        work_done_token: Option<lsp::ProgressToken>,
    ) -> Option<impl Future<Output = Result<Vec<lsp::ColorInformation>>>> {
        self.capabilities.get().unwrap().color_provider.as_ref()?;
        let params = lsp::DocumentColorParams {
            text_document,
            work_done_progress_params: lsp::WorkDoneProgressParams {
                work_done_token: work_done_token.clone(),
            },
            partial_result_params: helix_lsp_types::PartialResultParams {
                partial_result_token: work_done_token,
            },
        };

        Some(self.call::<lsp::request::DocumentColor>(params))
    }

    pub fn text_document_hover(
        &self,
        text_document: lsp::TextDocumentIdentifier,
        position: lsp::Position,
        work_done_token: Option<lsp::ProgressToken>,
    ) -> Option<impl Future<Output = Result<Option<lsp::Hover>>>> {
        let capabilities = self.capabilities.get().unwrap();

        // Return early if the server does not support hover.
        match capabilities.hover_provider {
            Some(
                lsp::HoverProviderCapability::Simple(true)
                | lsp::HoverProviderCapability::Options(_),
            ) => (),
            _ => return None,
        }

        let params = lsp::HoverParams {
            text_document_position_params: lsp::TextDocumentPositionParams {
                text_document,
                position,
            },
            work_done_progress_params: lsp::WorkDoneProgressParams { work_done_token },
            // lsp::SignatureHelpContext
        };

        Some(self.call::<lsp::request::HoverRequest>(params))
    }

    // formatting

    pub fn text_document_formatting(
        &self,
        text_document: lsp::TextDocumentIdentifier,