Function parseArgumentsList

packages/core/css/parser.ts:449–487

(text: string, start: number, argument: (value: string, lastIndex: number, index: number) => Parsed<T>)

const closingBracketRegEx = /\s*\)\s*/gy;
const closingBracketOrCommaRegEx = /\s*([),])\s*/gy;
function parseArgumentsList<T>(text: string, start: number, argument: (value: string, lastIndex: number, index: number) => Parsed<T>): Parsed<Parsed<T>[]> {
	openingBracketRegEx.lastIndex = start;
	const openingBracket = openingBracketRegEx.exec(text);
	if (!openingBracket) {
		return null;
	}
	let end = openingBracketRegEx.lastIndex;
	const value: Parsed<T>[] = [];

	closingBracketRegEx.lastIndex = end;
	const closingBracket = closingBracketRegEx.exec(text);
	if (closingBracket) {
		return { start, end, value };
	}

	// eslint-disable-next-line no-constant-condition
	for (let index = 0; true; index++) {
		const arg = argument(text, end, index);
		if (!arg) {
			return null;
		}
		end = arg.end;
		value.push(arg);

		closingBracketOrCommaRegEx.lastIndex = end;
		const closingBracketOrComma = closingBracketOrCommaRegEx.exec(text);
		if (closingBracketOrComma) {
			end = closingBracketOrCommaRegEx.lastIndex;
			if (closingBracketOrComma[1] === ',') {
				// noinspection UnnecessaryContinueJS
				continue;
			} else if (closingBracketOrComma[1] === ')') {
				return { start, end, value };
			}
		} else {
			return null;
		}
	}
}

export function parseColorStop(text: string, start = 0): Parsed<ColorStop> {
	const color = parseColor(text, start);