Method parseVar

ZezeJava/ZezeJava/src/main/java/Zeze/Util/Str.java:248–263

(@NotNull StringBuilder sb, @NotNull String str,
											 @NotNull OutInt fromIndex)

	}

	private static @Nullable String parseVar(@NotNull StringBuilder sb, @NotNull String str,
											 @NotNull OutInt fromIndex) {
		var quoteLeft = str.indexOf('{', fromIndex.value);
		if (quoteLeft < 0) {
			sb.append(str, fromIndex.value, str.length());
			return null;
		}
		var quoteRight = str.indexOf('}', quoteLeft + 1);
		if (quoteRight < 0) {
			sb.append(str, fromIndex.value, str.length());
			return null;
		}
		sb.append(str, fromIndex.value, quoteLeft);
		fromIndex.value = quoteRight + 1;
		return str.substring(quoteLeft + 1, quoteRight);
	}
}