expression: term | expression `+' term | expression `-' term
term: factor | term `*' factor | term `/' factor
factor: primary | `+' factor | `-' factor
- primary: int | id | string | `(' expression `)' | `?' lisp-expression
+ primary: int | id | string | `(' expression `)' | `{' fragment `}'
+ | `?' lisp-expression
Only operators for dealing with integers are provided."
(with-parser-context (token-scanner-context :scanner scanner)
(let* ((stream (make-scanner-stream scanner))
(sexp (read stream t)))
(scanner-step scanner)
- (values (cons (property-type sexp) sexp)
- t t)))
+ (multiple-value-bind (type value)
+ (decode-property sexp)
+ (values (cons type value) t t))))
+ (#\{
+ (values (cons :fragment
+ (parse-delimited-fragment scanner
+ #\{ #\}))
+ t t))
(t
(values (list :int :id :char :string #\?)
nil nil)))))