class Token {
    lateinit var content: String
    lateinit var type: TokenType
    var lineNumber: Int = 0
}

/**
 * Finds the next non empty token by [index]
 */
fun nextNonEmpty(statement: MutableList<Token>, index: Int): Token {
    var i = index + 1
    while (statement[i].type == TokenType.Empty) i++
    return statement[i]
}