func range()

in Sources/Markdown/Parser/CommonMarkConverter.swift [145:170]

17 lines of code
3 McCabe index (conditional complexity)


    func range(_ node: UnsafeMutablePointer<cmark_node>?) -> SourceRange? {
        let startLine = Int(cmark_node_get_start_line(node))
        let startColumn = Int(cmark_node_get_start_column(node))
        guard startLine > 0 && startColumn > 0 else {
            // cmark doesn't track the positions for this node.
            return nil
        }

        let endLine = Int(cmark_node_get_end_line(node))
        let endColumn = Int(cmark_node_get_end_column(node)) + 1

        guard endLine > 0 && endColumn > 0 else {
            // cmark doesn't track the positions for this node.
            return nil
        }

        // If this is a symbol link / code span, set the locations to include the ticks.
        let backtickCount = Int(cmark_node_get_backtick_count(node))

        let start = SourceLocation(line: startLine, column: startColumn - backtickCount, source: source)
        let end = SourceLocation(line: endLine, column: endColumn + backtickCount, source: source)

        // Sometimes the cmark range is invalid (rdar://73376719)
        guard start <= end else { return nil }
        return start..<end
    }