Function decode_basic_string 

pub(crate) fn decode_basic_string<'i>(
    raw: Raw<'i>,
    output: &mut dyn StringBuilder<'i>,
    error: &mut dyn ErrorSink,
)

Parse basic string

;; Basic String

basic-string = quotation-mark *basic-char quotation-mark

basic-char = basic-unescaped / escaped

escaped = escape escape-seq-char