Method inFunctionScope

lib/javascript/JavascriptParser.js:4644–4666

* Processes the provided has thi. * @param {boolean} hasThis true, when this is defined * @param {(Pattern | string)[]} params scope params * @param {() => void} fn inner function * @returns {void}

(hasThis, params, fn)

	 * @returns {void}
	 */
	inFunctionScope(hasThis, params, fn) {
		const oldScope = this.scope;
		this.scope = {
			topLevelScope: oldScope.topLevelScope,
			inTry: false,
			inShorthand: false,
			inTaggedTemplateTag: false,
			isStrict: oldScope.isStrict,
			isAsmJs: oldScope.isAsmJs,
			terminated: undefined,
			definitions: oldScope.definitions.createChild()
		};

		if (hasThis) {
			this.undefineVariable("this");
		}

		this.enterPatterns(params, this._defineVariable);

		fn();

		this.scope = oldScope;
	}

	/**
	 * Processes the provided fn.