func process()

in Generator/Sources/NeedleFramework/Parsing/Pluginized/Processors/PluginExtensionCycleValidator.swift [39:69]
22 lines of code
3 McCabe index (conditional complexity)

    func process() throws {
        for component in pluginizedComponents {
            guard let pluginExtension = component.pluginExtension else {
                throw GenericError.withMessage("\(component.data.name)'s plugin extension has not been linked.")
            }
            guard let nonCoreDependency = component.nonCoreComponent?.dependencyProtocol else {
                throw GenericError.withMessage("\(component.data.name)'s non-core component dependency has not been linked.")
            }

            let nonCoreDepProperties = Set<Property>(nonCoreDependency.properties)
            let pluginExtensionProperties = Set<Property>(pluginExtension.properties)
            let componentProperties = Set<Property>(component.data.properties)
            // This isn't an exact cycle matching, since we cannot check for
            // how the property is provided by the core component. This just
            // checks that core component provides a property which is also
            // required by the plugin extension and the non-core component dependency.
            // SourceKit does not provide the last bit of information, where the
            // core component provides the property via `pluginExtension.property`.
            // In this case, we are assuming the property is provided via the
            // plugin extension, since it lists it, therefore causing a cycle.
            let intersections = nonCoreDepProperties.intersection(pluginExtensionProperties).intersection(componentProperties)
            if !intersections.isEmpty {
                let cyclicPropertiesString = intersections
                    .map { (property: Property) -> String in
                        return "(\(property.name): \(property.type))"
                    }
                    .joined(separator: ", ")
                throw GenericError.withMessage("\(component.data.name) contains cyclic plugin extension properties \(cyclicPropertiesString).")
            }
        }
    }