98 lines
3.5 KiB
Racket
98 lines
3.5 KiB
Racket
#reader scribble/reader
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#lang scheme/base
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(require scribblings/htdp-langs/common
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scribble/decode
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(for-label deinprogramm/DMdA-beginner))
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(provide prim-nonterms
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schemegrammar*-DMdA)
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(define ex-str "Dies ist eine Zeichenkette, die \" enthält.")
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(define-syntax-rule (schemegrammar*-DMdA
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#:literals (lit ...)
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(def-rule ...)
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(prod ...)
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(expr-rule ...))
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(schemegrammar*
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#:literals (define define-record-procedures lambda cond if and or let letrec let* begin
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#;require lib planet
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check-expect check-within check-error
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contract :
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predicate one-of mixed list %a %b %c
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lit ...)
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(... [program (code:line def-or-expr ...)])
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[def-or-expr definition
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expr
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test-case
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#;library-require]
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[definition @#,scheme[(define id expr)]
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@#,scheme[(define-record-procedures id id id (id (... ...)))]
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@#,scheme[(define-record-procedures-parametric (id id (... ...)) id id (id (... ...)))]
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@#,scheme[(: id contr)]
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def-rule ...]
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prod ...
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[expr @#,scheme[(code:line (expr expr (... ...)) (code:comment @#,seclink["application"]{Prozedurapplikation}))]
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@#,scheme[#t]
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@#,scheme[#f]
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@#,scheme[number]
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@#,scheme[string]
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@#,scheme[(lambda (id (... ...)) expr)]
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@#,scheme[(code:line id (code:comment @#,seclink["id"]{Bezeichner}))]
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@#,scheme[(cond (expr expr) (expr expr) (... ...))]
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@#,scheme[(cond (expr expr) (... ...) (else expr))]
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@#,scheme[(if expr expr)]
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@#,scheme[(and expr (... ...))]
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@#,scheme[(or expr (... ...))]
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@#,scheme[(let ((id expr) (... ...)) expr)]
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@#,scheme[(letrec ((id expr) (... ...)) expr)]
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@#,scheme[(let* ((id expr) (... ...)) expr) ]
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@#,scheme[(begin expr expr (... ...))]
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@#,scheme[(contract contr)]
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@#,scheme[(for-all ((id contr) (... ...)) expr)]
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@#,scheme[(==> expr expr)]
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expr-rule ...]
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[contr id
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@#,scheme[(predicate expr)]
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@#,scheme[(one-of expr (... ...))]
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@#,scheme[(mixed contr (... ...))]
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@#,scheme[(code:line (contr (... ...) -> contr) (code:comment @#,seclink["proc-contract"]{Prozedur-Vertrag}))]
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@#,scheme[(list contr)]
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@#,scheme[(code:line %a %b %c (code:comment @#,seclink["contract-variable"]{Vertrags-Variable}))]
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@#,scheme[(combined contr (... ...))]
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@#,scheme[contract]
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]
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[test-case @#,scheme[(check-expect expr expr)]
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@#,scheme[(check-within expr expr expr)]
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@#,scheme[(check-member-of expr expr (... ...))]
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@#,scheme[(check-range expr expr expr)]
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@#,scheme[(check-error expr expr)]
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@#,scheme[(check-property expr)]]
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#;(...
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[library-require @#,scheme[(require string)]
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@#,scheme[(require module-id)]
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@#,scheme[(require (lib string string ...))]
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@#,scheme[(require (planet string package))]])
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#;(...
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[package @#,scheme[(string string number number)]])))
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(define prim-nonterms
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(make-splice
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(list
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@t{Ein @scheme[_id] ist eine Folge von Zeichen, die weder Leerzeichen
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noch eins der folgenden Zeichen enthält:}
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@t{@hspace[2] @litchar{"} @litchar{,} @litchar{'} @litchar{`}
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@litchar{(} @litchar{)} @litchar{[} @litchar{]}
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@litchar["{"] @litchar["}"] @litchar{|} @litchar{;}
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@litchar{#}}
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@t{Ein @scheme[_number] ist eine Zahl wie z.B. @scheme[123], @scheme[3/2] oder
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@scheme[5.5].}
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@t{Ein @scheme[_string] ist eine Zeichenkette, und durch ein Paar von @litchar{"} umschlossen.
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So sind z.B. @scheme["abcdef"],
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@scheme["This is a string"] und @scheme[#,ex-str] Zeichenketten.}
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)))
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