Method next

lib/css/syntax.js:1939–1963

* The next token (CSS Syntax §3 "next token") — the upcoming token without * consuming it; the `<eof-token>` once the source is exhausted. This is the * token the consume algorithms dispatch on (the spec's "process"). Tokenized * from `_pos` on first use and cached until consumed; comment toke

()

	 * @returns {MutableToken} the next token
	 */
	next() {
		if (this._next === undefined) {
			const input = this.input;
			const tok = this._tok;
			let pos = this._pos;
			for (;;) {
				const t = readToken(input, pos, tok);
				if (t === undefined) {
					this._next = fill(tok, TT_EOF, input.length, input.length);
					break;
				}
				if (t.type === TT_COMMENT) {
					if (t.start >= this._commentHigh) {
						if (this._onComment) this._onComment(input, t.start, t.end);
						this._commentHigh = t.end;
					}
					pos = t.end;
					continue;
				}
				this._next = t;
				break;
			}
		}
		return /** @type {MutableToken} */ (this._next);
	}

	/**
	 * Consume a token (CSS Syntax §3 "consume a token") — return the next token