Function consumeASimpleBlock

lib/css/syntax.js:2755–2790

(ts)

 * @returns {SimpleBlock | undefined} the parsed simple block
 */
const consumeASimpleBlock = (ts) => {
	const open = ts.next();
	// Assert (spec): the next token of input is <{-token>, <[-token>, or <(-token>.
	// Mirror closing token (`opener + 3`) and the associated block char.
	const ending = open.type + 3;
	const token = BLOCK_TOKEN_CHAR[open.type - TT_LEFT_PARENTHESIS];

	// Let block be a new simple block with its associated token set to the next token and with its value initially set to an empty list.
	const block = /** @type {SimpleBlock} */ (
		_mkContainer(T_SIMPLE_BLOCK, open.start, open.end)
	);
	_setToken(block, token);
	const val = _list();
	_setValue(block, val);

	// Discard a token from input.
	ts.discard();

	// Process input
	for (;;) {
		const t = ts.next();

		// <eof-token>
		// ending token
		// Discard a token from input. Return block.
		if (t.type === TT_EOF || t.type === ending) {
			ts.discard();
			_setEnd(block, t.end);
			return block;
		}

		// anything else
		// Consume a component value from input and append the result to block’s value.
		val.push(consumeAComponentValue(ts, t));
	}
};

/**
 * Consume a function, CSS Syntax Level 3 [§5.4.10](https://drafts.csswg.org/css-syntax/#consume-function) — consumes component values up to the matching `)` or EOF (the partial function on EOF is a parse error).