Function on_inline_table_open 

fn on_inline_table_open(
    tokens: &mut TokenSlice<'_, Token>,
    inline_table_open: &Token,
    receiver: &mut dyn EventReceiver,
    error: &mut dyn ErrorSink,
)

Parse an inline table

;; Inline Table

inline-table = inline-table-open [ inline-table-keyvals ] ws-comment-newline inline-table-close

inline-table-keyvals =  ws-comment-newline keyval ws-comment-newline inline-table-sep inline-table-keyvals
inline-table-keyvals =/ ws-comment-newline keyval ws-comment-newline [ inline-table-sep ]