private applyDefaultConfigurationValues()

in Extension/src/LanguageServer/configurations.ts [350:398]
36 lines of code
26 McCabe index (conditional complexity)

    private applyDefaultConfigurationValues(configuration: Configuration): void {
        const settings: CppSettings = new CppSettings(this.rootUri);
        // default values for "default" config settings is null.
        const isUnset: (input: any) => boolean = (input: any) => input === null || input === undefined;

        // Anything that has a vscode setting for it will be resolved in updateServerOnFolderSettingsChange.
        // So if a property is currently unset, but has a vscode setting, don't set it yet, otherwise the linkage
        // to the setting will be lost if this configuration is saved into a c_cpp_properties.json file.

        // Only add settings from the default compiler if user hasn't explicitly set the corresponding VS Code setting.

        const rootFolder: string = "${workspaceFolder}/**";
        const defaultFolder: string = "${default}";
        // We don't add system includes to the includePath anymore. The language server has this information.
        if (isUnset(settings.defaultIncludePath)) {
            configuration.includePath = [rootFolder].concat(this.vcpkgIncludes);
        } else {
            configuration.includePath = [defaultFolder];
        }

        // browse.path is not set by default anymore. When it is not set, the includePath will be used instead.
        if (isUnset(settings.defaultDefines)) {
            configuration.defines = (process.platform === 'win32') ? ["_DEBUG", "UNICODE", "_UNICODE"] : [];
        }
        if (isUnset(settings.defaultMacFrameworkPath) && process.platform === 'darwin') {
            configuration.macFrameworkPath = this.defaultFrameworks;
        }
        if ((isUnset(settings.defaultWindowsSdkVersion) || settings.defaultWindowsSdkVersion === "") && this.defaultWindowsSdkVersion && process.platform === 'win32') {
            configuration.windowsSdkVersion = this.defaultWindowsSdkVersion;
        }
        if (isUnset(settings.defaultCompilerPath) && this.defaultCompilerPath &&
            (isUnset(settings.defaultCompileCommands) || settings.defaultCompileCommands === "") && !configuration.compileCommands) {
            // compile_commands.json already specifies a compiler. compilerPath overrides the compile_commands.json compiler so
            // don't set a default when compileCommands is in use.
            configuration.compilerPath = this.defaultCompilerPath;
        }
        if ((isUnset(settings.defaultCStandard) || settings.defaultCStandard === "") && this.defaultCStandard) {
            configuration.cStandard = this.defaultCStandard;
        }
        if ((isUnset(settings.defaultCppStandard) || settings.defaultCppStandard === "") && this.defaultCppStandard) {
            configuration.cppStandard = this.defaultCppStandard;
        }
        if (isUnset(settings.defaultIntelliSenseMode) || settings.defaultIntelliSenseMode === "") {
            configuration.intelliSenseMode = this.defaultIntelliSenseMode;
        }
        if (isUnset(settings.defaultCustomConfigurationVariables) || settings.defaultCustomConfigurationVariables === {}) {
            configuration.customConfigurationVariables = this.defaultCustomConfigurationVariables;
        }
    }