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path: root/support/texlab/src/capabilities.rs
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use lsp_types::{ClientCapabilities, MarkupKind};

pub trait ClientCapabilitiesExt {
    fn has_definition_link_support(&self) -> bool;

    fn has_hierarchical_document_symbol_support(&self) -> bool;

    fn has_work_done_progress(&self) -> bool;

    fn has_hover_markdown_support(&self) -> bool;
}

impl ClientCapabilitiesExt for ClientCapabilities {
    fn has_definition_link_support(&self) -> bool {
        self.text_document
            .as_ref()
            .and_then(|cap| cap.definition.as_ref())
            .and_then(|cap| cap.link_support)
            == Some(true)
    }

    fn has_hierarchical_document_symbol_support(&self) -> bool {
        self.text_document
            .as_ref()
            .and_then(|cap| cap.document_symbol.as_ref())
            .and_then(|cap| cap.hierarchical_document_symbol_support)
            == Some(true)
    }

    fn has_work_done_progress(&self) -> bool {
        self.window.as_ref().and_then(|cap| cap.work_done_progress) == Some(true)
    }

    fn has_hover_markdown_support(&self) -> bool {
        if let Some(formats) = self
            .text_document
            .as_ref()
            .and_then(|cap| cap.hover.as_ref())
            .and_then(|cap| cap.content_format.as_ref())
        {
            formats.contains(&MarkupKind::Markdown)
        } else {
            false
        }
    }
}