constructor()

in src/grammar.ts [317:356]

• 32 lines of code
• 6 McCabe index (conditional complexity)

	constructor(initialLanguage: number, themeProvider: IThemeProvider, embeddedLanguages: IEmbeddedLanguagesMap | null) {
		this._initialLanguage = initialLanguage;
		this._themeProvider = themeProvider;
		this._cache = new Map();
		this._defaultMetaData = new ScopeMetadata(
			'',
			this._initialLanguage,
			TemporaryStandardTokenType.Other,
			[this._themeProvider.getDefaults()]
		);

		// embeddedLanguages handling
		this._embeddedLanguages = Object.create(null);

		if (embeddedLanguages) {
			// If embeddedLanguages are configured, fill in `this._embeddedLanguages`
			const scopes = Object.keys(embeddedLanguages);
			for (let i = 0, len = scopes.length; i < len; i++) {
				const scope = scopes[i];
				const language = embeddedLanguages[scope];
				if (typeof language !== 'number' || language === 0) {
					console.warn('Invalid embedded language found at scope ' + scope + ': <<' + language + '>>');
					// never hurts to be too careful
					continue;
				}
				this._embeddedLanguages[scope] = language;
			}
		}

		// create the regex
		const escapedScopes = Object.keys(this._embeddedLanguages).map((scopeName) => ScopeMetadataProvider._escapeRegExpCharacters(scopeName));
		if (escapedScopes.length === 0) {
			// no scopes registered
			this._embeddedLanguagesRegex = null;
		} else {
			escapedScopes.sort();
			escapedScopes.reverse();
			this._embeddedLanguagesRegex = new RegExp(`^((${escapedScopes.join(')|(')}))($|\\.)`, '');
		}
	}