ac26fe7554
Also, updates some of the mzlib files to point at `racket/*' libraries rather than to `scheme/*' ones.
87 lines
2.9 KiB
Racket
87 lines
2.9 KiB
Racket
#reader scribble/reader
|
|
#lang scheme/base
|
|
(require "common.ss"
|
|
scribble/decode
|
|
(for-label lang/htdp-beginner-abbr))
|
|
|
|
(provide prim-nonterms
|
|
racketgrammar*+library
|
|
racketgrammar*+qq)
|
|
|
|
(define ex-str "This is a string with \" inside")
|
|
|
|
(define-syntax-rule (racketgrammar*+library
|
|
#:literals lits
|
|
(check-expect check-within check-error require)
|
|
form ...)
|
|
(racketgrammar*
|
|
#:literals lits
|
|
form ...
|
|
[test-case @#,racket[(check-expect expr expr)]
|
|
@#,racket[(check-within expr expr expr)]
|
|
@#,racket[(check-member-of expr expr (... ...))]
|
|
@#,racket[(check-range expr expr expr)]
|
|
@#,racket[(check-error expr expr)]
|
|
@#,racket[(check-error expr)]]
|
|
(...
|
|
[library-require @#,racket[(require string)]
|
|
@#,racket[(require (lib string string ...))]
|
|
@#,racket[(require (planet string package))]])
|
|
(...
|
|
[package @#,racket[(string string number number)]])))
|
|
|
|
(define-syntax-rule (racketgrammar*+qq
|
|
#:literals lits
|
|
(check-expect check-within check-error require)
|
|
form ...)
|
|
(racketgrammar*+library
|
|
#:literals lits
|
|
(check-expect check-within check-error require)
|
|
form ...
|
|
(...
|
|
[quoted id
|
|
number
|
|
string
|
|
character
|
|
@#,racket[(quoted ...)]
|
|
@#,elem{@racketvalfont{'}@racket[quoted]}
|
|
@#,elem{@racketvalfont{`}@racket[quoted]}
|
|
@#,elem{@racketfont{,}@racket[quoted]}
|
|
@#,elem{@racketfont[",@"]@racket[quoted]}])
|
|
(...
|
|
[quasiquoted id
|
|
number
|
|
string
|
|
character
|
|
@#,racket[(quasiquoted ...)]
|
|
@#,elem{@racketvalfont{'}@racket[quasiquoted]}
|
|
@#,elem{@racketvalfont{`}@racket[quasiquoted]}
|
|
@#,elem{@racketfont{,}@racket[expr]}
|
|
@#,elem{@racketfont[",@"]@racket[expr]}])))
|
|
|
|
(define prim-nonterms
|
|
(make-splice
|
|
(list
|
|
|
|
@t{An @racket[_id] is a sequence of characters not including a
|
|
space or one of the following:}
|
|
|
|
@t{@hspace[2] @litchar{"} @litchar{,} @litchar{'} @litchar{`}
|
|
@litchar{(} @litchar{)} @litchar{[} @litchar{]}
|
|
@litchar["{"] @litchar["}"] @litchar{|} @litchar{;}
|
|
@litchar{#}}
|
|
|
|
@t{A @racket[_number] is a number such as @racket[123], @racket[3/2], or
|
|
@racket[5.5].}
|
|
|
|
@t{A @racket[_string] is enclosed by a pair of @litchar{"}. Unlike
|
|
symbols, strings may be split into characters and manipulated by a
|
|
variety of primitive functions. For example, @racket["abcdef"],
|
|
@racket["This is a string"], and @racket[#,ex-str] are all strings.}
|
|
|
|
@t{A @racket[_character] begins with @litchar{#\} and has the
|
|
name of the character. For example, @racket[#\a], @racket[#\b],
|
|
and @racket[#\space] are characters.}
|
|
|
|
)))
|