*** empty log message ***

original commit: 12d65914f68bdb255ee8071688a246f0b404b893
tokens
Scott Owens 22 years ago
parent 7c6dde5a62
commit 19559b74b4

@ -84,6 +84,7 @@
;; run the calculator on the given input-port
(define (calc ip)
(port-count-lines! ip)
(letrec ((one-line
(lambda ()
(let ((result (calcp (lambda () (calcl ip)))))
@ -91,4 +92,4 @@
(begin
(printf "~a~n" result)
(one-line)))))))
(one-line))))
(one-line)))

@ -12,7 +12,7 @@
(define-tokens data (DATUM))
(define-empty-tokens delim (OP CP HASHOP QUOTE QUASIQUOTE UNQUOTE UNQUOTE-SPLICING DOT EOF))
(define scheme-lexer
(lexer-src-pos
@ -53,10 +53,10 @@
(define-lex-abbrevs
[any (- #\000 #\377)]
[letter (: (- a z) (- A Z))]
[letter (: (- a z) (- #\A #\Z))]
[digit (- #\0 #\9)]
[whitespace (: #\newline #\return #\tab #\space #\vtab)]
[initial (: (letter) ! $ % & * / : < = > ? ^ _ ~)]
[initial (: (letter) ! $ % & * / : < = > ? ^ _ ~ @)]
[subsequent (: (initial) (digit) + - #\. @)]
[comment (@ #\; (* (^ #\newline)) #\newline)]
@ -191,8 +191,8 @@
#f
value
(list source
(position-line start-pos)
(position-col start-pos)
(add1 (position-line start-pos))
(add1 (position-col start-pos))
(position-offset start-pos)
(- (position-offset end-pos)
(position-offset start-pos)))
@ -233,12 +233,13 @@
[(sexp-list sexp) (cons $2 $1)]))))
(define (rs sn ip off)
((scheme-parser sn) (lambda () (scheme-lexer ip)))))
(port-count-lines! ip)
((scheme-parser sn) (lambda () (scheme-lexer ip))))
(define readsyntax
(case-lambda ((sn) (rs sn (current-input-port) (list 0 0 0)))
((sn ip) (rs sn ip (list 0 0 0)))
((sn ip off) (rs sn ip off))))
((sn ip off) (rs sn ip off))))
(provide (rename readsyntax read-syntax))

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