mutating func initializeSymbolContent()

in Sources/SwiftDocC/Model/DocumentationNode.swift [292:354]
47 lines of code
5 McCabe index (conditional complexity)

    mutating func initializeSymbolContent(documentationExtension: Article?, engine: DiagnosticEngine) {
        precondition(unifiedSymbol != nil && symbol != nil, "You can only call initializeSymbolContent() on a symbol node.")
        
        let (markup, docChunks) = Self.contentFrom(
            documentedSymbol: unifiedSymbol?.documentedSymbol,
            documentationExtension: documentationExtension,
            engine: engine
        )
        
        self.markup = markup
        self.docChunks = docChunks

        // Parse the structured markup
        let markupModel = DocumentationMarkup(markup: markup)
        
        let symbolAvailability = symbol!.mixins.getValueIfPresent(for: SymbolGraph.Symbol.Availability.self)
        
        // Use a deprecation summary from the symbol docs or article content.
        var deprecated: DeprecatedSection? = markupModel.deprecation.map { DeprecatedSection.init(content: $0.elements) }

        // When deprecation is not authored explicitly, try using a deprecation message from annotation.
        if deprecated == nil, let symbolAvailability = symbolAvailability {
            let availabilityData = AvailabilityParser(symbolAvailability)
            deprecated = availabilityData.deprecationMessage().map(DeprecatedSection.init(text:))
        }

        // Merge in the symbol documentation content
        let semantic = self.semantic as! Symbol
        
        // Symbol is a by-reference type so we're updating the original `semantic` property instance.
        semantic.abstractSectionVariants = DocumentationDataVariants(
            defaultVariantValue: markupModel.abstractSection
        )
        semantic.discussionVariants = DocumentationDataVariants(
            defaultVariantValue: markupModel.discussionSection
        )
        semantic.topicsVariants = DocumentationDataVariants(
            defaultVariantValue: markupModel.topicsSection
        )
        semantic.seeAlsoVariants = DocumentationDataVariants(
            defaultVariantValue: markupModel.seeAlsoSection
        )
        semantic.deprecatedSummaryVariants = DocumentationDataVariants(
            defaultVariantValue: deprecated
        )
        semantic.redirectsVariants = DocumentationDataVariants(
            defaultVariantValue: documentationExtension?.redirects
        )
        
        if let returns = markupModel.discussionTags?.returns, !returns.isEmpty {
            semantic.returnsSectionVariants = DocumentationDataVariants(
                defaultVariantValue: ReturnsSection(content: returns[0].contents)
            )
        }
        
        if let parameters = markupModel.discussionTags?.parameters, !parameters.isEmpty {
            semantic.parametersSectionVariants = DocumentationDataVariants(
                defaultVariantValue: ParametersSection(parameters: parameters)
            )
        }
        
        updateAnchorSections()
    }