Supporting methods in web-server/dispatch

This commit is contained in:
Jay McCarthy 2012-05-28 14:13:19 -06:00
parent 8b035f3c73
commit 211e869fe1
4 changed files with 429 additions and 321 deletions

View File

@ -14,47 +14,47 @@
web-server/dispatch/container)
(provide all-dispatch-tests)
(define (test-request url)
(make-request #"GET" url null (delay null) #f "1.2.3.4" 123 "4.3.2.1"))
(define (test-request url #:method [method #"GET"])
(make-request method url null (delay null) #f "1.2.3.4" 123 "4.3.2.1"))
(define all-dispatch-tests
(test-suite
"Dispatch"
#;(local
[(define-syntax test-match=>
(syntax-rules ()
[(_ val pat res)
(test-equal? (format "~S" 'pat)
(match=> val [pat => (lambda x x)])
res)]))]
(test-suite
"match"
(test-match=> (list 1 2) (list a b) (list 1 2))
(test-match=> (list 1 2) (list _ b) (list 2))))
[(define-syntax test-match=>
(syntax-rules ()
[(_ val pat res)
(test-equal? (format "~S" 'pat)
(match=> val [pat => (lambda x x)])
res)]))]
(test-suite
"match"
(test-match=> (list 1 2) (list a b) (list 1 2))
(test-match=> (list 1 2) (list _ b) (list 2))))
(test-suite
"coercion"
(test-suite "make-coerce-safe?"
(local [(define string->number? (make-coerce-safe? string->number))]
(test-not-false "1" (string->number? "1"))
(test-not-false "1.2" (string->number? "1.2"))
(test-not-false "+inf.0" (string->number? "+inf.0"))
(test-false "a" (string->number? "a"))))
(test-not-false "1" (string->number? "1"))
(test-not-false "1.2" (string->number? "1.2"))
(test-not-false "+inf.0" (string->number? "+inf.0"))
(test-false "a" (string->number? "a"))))
(test-suite "define-coercion-match-expander"
(local [(define string->number? (make-coerce-safe? string->number))
(define-coercion-match-expander string->number/m string->number? string->number)
(define (test i r)
(test-equal? i (match i [(string->number/m a) a] [_ #f]) r))]
(test "1" 1)
(test "1.2" 1.2)
(test "+inf.0" +inf.0)
(test "a" #f))))
(test "1" 1)
(test "1.2" 1.2)
(test "+inf.0" +inf.0)
(test "a" #f))))
(local [(define string->number? (make-coerce-safe? string->number))
(define-coercion-match-expander string->number/m string->number? string->number)
(define-coercion-match-expander number->string/m number? number->string)
@ -65,62 +65,62 @@
(test-suite (format "~S" (list i r))
(test-equal? (format "~S" i)
(syntax-parameterize ([bidi-match-going-in? #t])
(match i [(number-arg a) a] [_ #f]))
(match i [(number-arg a) a] [_ #f]))
r)
(test-equal? (format "~S" r)
(syntax-parameterize ([bidi-match-going-in? #f])
(match r [(number-arg a) a] [_ #f]))
(match r [(number-arg a) a] [_ #f]))
i))]
[i
(test-equal? (format "~S" i)
(syntax-parameterize ([bidi-match-going-in? #t])
(match i [(number-arg a) a] [_ #f]))
(match i [(number-arg a) a] [_ #f]))
r)]
[r
(test-equal? (format "~S" r)
(syntax-parameterize ([bidi-match-going-in? #f])
(match r [(number-arg a) a] [_ #f]))
(match r [(number-arg a) a] [_ #f]))
i)]))]
(test-suite
"bidi-match"
(test "1" 1)
(test "1.2" 1.2)
(test "+inf.0" +inf.0)
(test "a" #f)
(test #f "a")))
(test-suite
"bidi-match"
(test "1" 1)
(test "1.2" 1.2)
(test "+inf.0" +inf.0)
(test "a" #f)
(test #f "a")))
(test-suite
"http-expanders"
(test-not-false "http://www.example.com/new"
(test-not-false "http://www.example.com/new"
(match (string->url "http://www.example.com/new")
[(url/paths "new")
#t]
[else
#f]))
(test-not-false "http://www.example.com/"
(test-not-false "http://www.example.com/"
(match (string->url "http://www.example.com/")
[(url/paths "")
#t]
[else
#f]))
(test-not-false "http://www.example.com"
(test-not-false "http://www.example.com"
(match (string->url "http://www.example.com")
[(url/paths)
#t]
[else
#f]))
(test-false "http://www.example.com/foo"
(test-false "http://www.example.com/foo"
(match (string->url "http://www.example.com/foo")
[(url/paths "new")
#t]
[else
#f]))
(test-equal? "http://www.example.com/new/50"
(match (string->url "http://www.example.com/new/50")
[(url/paths "new" (integer-arg a))
@ -128,21 +128,21 @@
[else
#f])
50)
(test-false "http://www.example.com/new"
(match (string->url "http://www.example.com/new")
[(url/paths "new" (integer-arg a))
a]
[else
#f]))
(test-not-false "http://www.example.com/new"
(match (test-request (string->url "http://www.example.com/new"))
[(request/url (url/paths "new"))
#t]
[else
#f]))
(test-equal? "http://www.example.com/new/50"
(match (test-request (string->url "http://www.example.com/new/50"))
[(request/url (url/paths "new" (integer-arg a)))
@ -150,14 +150,14 @@
[else
#f])
50))
(test-suite
"pattern"
(test-false "string-syntax?" (string-syntax? #'a))
(test-false "string-syntax?" (string-syntax? #'(a b)))
(test-not-false "string-syntax?" (string-syntax? #'"foo"))
(test-equal? "dispatch-pattern-next-...?"
(dispatch-pattern-next-...? #'(a))
(list #f))
@ -167,7 +167,7 @@
(test-equal? "dispatch-pattern-next-...?"
(dispatch-pattern-next-...? #'(a (... ...)))
(list #t))
(test-equal? "dispatch-pattern-not-..."
(map syntax->datum (dispatch-pattern-not-... #'(a)))
'(a))
@ -177,23 +177,23 @@
(test-equal? "dispatch-pattern-not-..."
(map syntax->datum (dispatch-pattern-not-... #'(a (... ...))))
'(a))
(local
[(define (test in out)
(test-equal? "dispatch-pattern->dispatch-pattern/ids"
(map syntax->datum (dispatch-pattern->dispatch-pattern/ids in))
out))]
(test-suite
"dispatch-pattern->dispatch-pattern/ids"
(test #'() empty)
(test #'("string") (list "string"))
(test #'((... ...)) (list '...))
(test-case "arg"
(check-equal? (first (first (map syntax->datum (dispatch-pattern->dispatch-pattern/ids #'((string-arg))))))
'string-arg)
(check-pred symbol? (second (first (map syntax->datum (dispatch-pattern->dispatch-pattern/ids #'((string-arg))))))))))
[(define (test in out)
(test-equal? "dispatch-pattern->dispatch-pattern/ids"
(map syntax->datum (dispatch-pattern->dispatch-pattern/ids in))
out))]
(test-suite
"dispatch-pattern->dispatch-pattern/ids"
(test #'() empty)
(test #'("string") (list "string"))
(test #'((... ...)) (list '...))
(test-case "arg"
(check-equal? (first (first (map syntax->datum (dispatch-pattern->dispatch-pattern/ids #'((string-arg))))))
'string-arg)
(check-pred symbol? (second (first (map syntax->datum (dispatch-pattern->dispatch-pattern/ids #'((string-arg))))))))))
(test-exn "dispatch-pattern? ..." exn? (lambda () (dispatch-pattern? #'((... ...)))))
(test-exn "dispatch-pattern? foo ..." exn? (lambda () (dispatch-pattern? #'("foo" (... ...)))))
(test-not-false "dispatch-pattern? integer-arg a ..." (dispatch-pattern? #'((integer-arg a) (... ...))))
@ -202,7 +202,7 @@
(test-not-false "dispatch-pattern?" (dispatch-pattern? #'((integer-arg) (... ...))))
(test-not-false "dispatch-pattern?" (dispatch-pattern? #'((integer-arg))))
(test-not-false "dispatch-pattern?" (dispatch-pattern? #'("foo")))
(test-exn "dispatch-pattern/ids?" exn? (lambda () (dispatch-pattern/ids? #'((... ...)))))
(test-exn "dispatch-pattern/ids?" exn? (lambda () (dispatch-pattern/ids? #'("foo" (... ...)))))
(test-not-false "dispatch-pattern/ids?" (dispatch-pattern/ids? #'((integer-arg a) (... ...))))
@ -210,8 +210,8 @@
(test-not-false "dispatch-pattern/ids?" (dispatch-pattern/ids? #'((list a b) (... ...))))
(test-exn "dispatch-pattern/ids?" exn? (lambda () (dispatch-pattern/ids? #'((integer-arg) (... ...)))))
(test-exn "dispatch-pattern/ids?" exn? (lambda () (dispatch-pattern/ids? #'((integer-arg)))))
(test-not-false "dispatch-pattern/ids?" (dispatch-pattern/ids? #'("foo"))))
(test-not-false "dispatch-pattern/ids?" (dispatch-pattern/ids? #'("foo"))))
(local [(define-syntax test-arg
(syntax-rules ()
[(_ (arg arg-a ...)
@ -221,71 +221,94 @@
(test-suite (format "~S" 'arg)
(test-equal? (format "in ~S" in-expr)
(syntax-parameterize ([bidi-match-going-in? #t])
(match in-expr [(arg arg-a ... a) a]))
(match in-expr [(arg arg-a ... a) a]))
out-expr)
...
(test-equal? (format "out ~S" out-expr)
(syntax-parameterize ([bidi-match-going-in? #f])
(match out-expr [(arg arg-a ... a) a]))
(match out-expr [(arg arg-a ... a) a]))
in-expr)
...
(test-false (format "in-fail ~S" in-fail-expr)
(syntax-parameterize ([bidi-match-going-in? #t])
(match in-fail-expr [(arg arg-a ... a) a] [_ #f])))
(match in-fail-expr [(arg arg-a ... a) a] [_ #f])))
...
(test-false (format "out-fail ~S" out-fail-expr)
(syntax-parameterize ([bidi-match-going-in? #f])
(match out-fail-expr [(arg arg-a ... a) a] [_ #f])))
(match out-fail-expr [(arg arg-a ... a) a] [_ #f])))
...)]))]
(test-suite
"url-patterns"
(test-arg (number-arg)
(["1" 1]
["2.3" 2.3]
["+inf.0" +inf.0])
["a"]
['a #t])
(test-arg (integer-arg)
(["1" 1])
["a" "2.3" "+inf.0"]
['a #t 2.3 +inf.0])
(test-arg (real-arg)
(["1" 1]
["2.3" 2.3]
["+inf.0" +inf.0])
["a"]
['a #t])
(test-arg (string-arg)
(["1" "1"]
["foo" "foo"]
["/" "/"])
[]
['a #t 5])
(test-arg (symbol-arg)
(["1" '|1|]
["foo" 'foo]
["/" '/])
[]
["a" #t 5])
(local [(define-match-expander const-m
(syntax-rules ()
[(_ v id) (? (curry equal? v) id)]))
(define-bidi-match-expander const-arg const-m const-m)]
(test-arg (const-arg "1")
(["1" "1"])
["2"]
["2"]))))
(test-suite
"url-patterns"
(test-arg (number-arg)
(["1" 1]
["2.3" 2.3]
["+inf.0" +inf.0])
["a"]
['a #t])
(test-arg (integer-arg)
(["1" 1])
["a" "2.3" "+inf.0"]
['a #t 2.3 +inf.0])
(test-arg (real-arg)
(["1" 1]
["2.3" 2.3]
["+inf.0" +inf.0])
["a"]
['a #t])
(test-arg (string-arg)
(["1" "1"]
["foo" "foo"]
["/" "/"])
[]
['a #t 5])
(test-arg (symbol-arg)
(["1" '|1|]
["foo" 'foo]
["/" '/])
[]
["a" #t 5])
(local [(define-match-expander const-m
(syntax-rules ()
[(_ v id) (? (curry equal? v) id)]))
(define-bidi-match-expander const-arg const-m const-m)]
(test-arg (const-arg "1")
(["1" "1"])
["2"]
["2"]))))
(test-suite
"syntax"
(local
(test-suite
"methods"
(local
[(define (get req i) (add1 i))
(define (post req i) (sub1 i))
(define-values (blog-dispatch blog-url blog-applies?)
(dispatch-rules+applies
[((integer-arg)) #:method "get" get]
[((integer-arg)) #:method "post" post]
[((integer-arg)) get]))
(define (test-blog-dispatch url method val)
(test-equal? url
(blog-dispatch
(test-request #:method method (string->url url)))
val))]
(test-blog-dispatch "http://www.example.com/5" #"get" 6)
(test-blog-dispatch "http://www.example.com/6" #"get" 7)
(test-blog-dispatch "http://www.example.com/7" #"post" 6)
(test-blog-dispatch "http://www.example.com/8" #"post" 7)))
(test-suite
"applies"
(local
[(define (list-posts req) `(list-posts))
(define (review-post req p) `(review-post ,p))
(define (review-archive req y m) `(review-archive ,y ,m))
@ -296,10 +319,10 @@
[("posts" (string-arg)) review-post]
[("archive" (integer-arg) (integer-arg)) review-archive]))
(define (test-blog-dispatch url)
(test-not-false url (blog-applies? (test-request (string->url url)))))
(test-equal? url (blog-applies? (test-request (string->url url))) #t))
(define (test-blog-dispatch/exn url)
(test-false url (blog-applies? (test-request (string->url url)))))]
(test-equal? url (blog-applies? (test-request (string->url url))) #f))]
(test-blog-dispatch "http://www.example.com")
(test-blog-dispatch "http://www.example.com/")
(test-blog-dispatch "http://www.example.com/posts/hello-world")
@ -307,13 +330,13 @@
(test-blog-dispatch/exn "http://www.example.com/posts")
(test-blog-dispatch/exn "http://www.example.com/archive/post/02")
(test-blog-dispatch/exn "http://www.example.com/archive/2008/post")
(test-blog-dispatch/exn "http://www.example.com/foo"))
(test-blog-dispatch/exn "http://www.example.com/foo")))
(let ()
(define (list-posts req) `(list-posts))
(define (review-post req p) `(review-post ,p))
(define (review-archive req y m) `(review-archive ,y ,m))
(define (make-dispatch-test-suite blog-dispatch blog-url)
(define (test-blog-dispatch url res)
(test-equal? url (blog-dispatch (test-request (string->url url))) res))
@ -328,10 +351,10 @@
(apply blog-url args))))
(define (test-blog-dispatch/exn url)
(test-exn url exn:dispatcher? (lambda () (blog-dispatch (test-request (string->url url))))))
(test-suite
"blog"
(test-blog-dispatch "http://www.example.com" `(list-posts))
(test-blog-dispatch "http://www.example.com/" `(list-posts))
(test-blog-dispatch "http://www.example.com/posts/hello-world" `(review-post "hello-world"))
@ -340,7 +363,7 @@
(test-blog-dispatch/exn "http://www.example.com/archive/post/02")
(test-blog-dispatch/exn "http://www.example.com/archive/2008/post")
(test-blog-dispatch/exn "http://www.example.com/foo")
(test-blog-url "/" list-posts)
(test-blog-url "/posts/hello-world" review-post "hello-world")
(test-blog-url "/archive/2008/2" review-archive 2008 02)
@ -351,7 +374,7 @@
(test-blog-url/exn review-archive 2008 02 1)
(test-blog-url/exn review-archive "2008" 02)
(test-blog-url/exn review-archive 2008 "02")))
(test-suite
"dispatch"
(let ()
@ -362,7 +385,7 @@
[("posts" (string-arg)) review-post]
[("archive" (integer-arg) (integer-arg)) review-archive]))
(make-dispatch-test-suite blog-dispatch blog-url))
(let ()
(define-container blog-container
(blog-dispatch blog-url))
@ -375,87 +398,87 @@
(dispatch-rules! blog-container
[("archive" (integer-arg) (integer-arg)) review-archive])
(make-dispatch-test-suite blog-dispatch blog-url))))
(local
[(define (sum req as) (apply + as))
(define-values (rest-dispatch rest-url)
(dispatch-rules
[((integer-arg) ...) sum]))
(define (test-rest-dispatch url res)
(test-equal? url (rest-dispatch (test-request (string->url url))) res))
(define (test-rest-url url . args)
(test-equal? (format "~S" args)
(apply rest-url args)
url))
(define (test-rest-url/exn . args)
(test-exn (format "~S" args)
exn?
(lambda ()
(apply rest-url args))))
(define (test-rest-dispatch/exn url)
(test-exn url exn:dispatcher? (lambda () (rest-dispatch (test-request (string->url url))))))]
(test-suite
"rest args"
(test-rest-dispatch "http://www.sum.com" 0)
(test-rest-dispatch "http://www.sum.com/1" 1)
(test-rest-dispatch "http://www.sum.com/1/2" 3)
(test-rest-dispatch "http://www.sum.com/1/2/3" 6)
(test-rest-dispatch/exn "http://www.sum.com/1/2/3/bar")
(test-rest-dispatch/exn "http://www.sum.com/1/bar")
(test-rest-dispatch/exn "http://www.sum.com/bar")
(test-rest-url "/" sum empty)
(test-rest-url "/1" sum (list 1))
(test-rest-url "/1/2" sum (list 1 2))
(test-rest-url "/1/2/3" sum (list 1 2 3))
(test-rest-url/exn sum "foo")
(test-rest-url/exn sum 'bar)
(test-rest-url/exn sum 1)
(test-rest-url/exn sum #t)))
[(define (sum req as) (apply + as))
(define-values (rest-dispatch rest-url)
(dispatch-rules
[((integer-arg) ...) sum]))
(define (test-rest-dispatch url res)
(test-equal? url (rest-dispatch (test-request (string->url url))) res))
(define (test-rest-url url . args)
(test-equal? (format "~S" args)
(apply rest-url args)
url))
(define (test-rest-url/exn . args)
(test-exn (format "~S" args)
exn?
(lambda ()
(apply rest-url args))))
(define (test-rest-dispatch/exn url)
(test-exn url exn:dispatcher? (lambda () (rest-dispatch (test-request (string->url url))))))]
(test-suite
"rest args"
(test-rest-dispatch "http://www.sum.com" 0)
(test-rest-dispatch "http://www.sum.com/1" 1)
(test-rest-dispatch "http://www.sum.com/1/2" 3)
(test-rest-dispatch "http://www.sum.com/1/2/3" 6)
(test-rest-dispatch/exn "http://www.sum.com/1/2/3/bar")
(test-rest-dispatch/exn "http://www.sum.com/1/bar")
(test-rest-dispatch/exn "http://www.sum.com/bar")
(test-rest-url "/" sum empty)
(test-rest-url "/1" sum (list 1))
(test-rest-url "/1/2" sum (list 1 2))
(test-rest-url "/1/2/3" sum (list 1 2 3))
(test-rest-url/exn sum "foo")
(test-rest-url/exn sum 'bar)
(test-rest-url/exn sum 1)
(test-rest-url/exn sum #t)))
(local
[(define (sum req as ss) (list* (apply + as) ss))
(define-values (rest-dispatch rest-url)
(dispatch-rules
[((integer-arg) ... (string-arg) ...) sum]))
(define (test-rest-dispatch url res)
(test-equal? url (rest-dispatch (test-request (string->url url))) res))
(define (test-rest-url url . args)
(test-equal? (format "~S" args)
(apply rest-url args)
url))
(define (test-rest-url/exn . args)
(test-exn (format "~S" args)
exn?
(lambda ()
(apply rest-url args))))
(define (test-rest-dispatch/exn url)
(test-exn url exn:dispatcher? (lambda () (rest-dispatch (test-request (string->url url))))))]
(test-suite
"rest args (2)"
(test-rest-dispatch "http://www.sum.com" (list 0))
(test-rest-dispatch "http://www.sum.com/1" (list 1))
(test-rest-dispatch "http://www.sum.com/1/2" (list 3))
(test-rest-dispatch "http://www.sum.com/1/2/3" (list 6))
(test-rest-dispatch "http://www.sum.com/1/2/3/bar" (list 6 "bar"))
(test-rest-dispatch "http://www.sum.com/1/bar" (list 1 "bar"))
(test-rest-dispatch "http://www.sum.com/1/bar/zog" (list 1 "bar" "zog"))
(test-rest-dispatch "http://www.sum.com/bar/zog" (list 0 "bar" "zog"))
(test-rest-url "/" sum empty empty)
(test-rest-url "/1" sum (list 1) empty)
(test-rest-url "/1/2" sum (list 1 2) empty)
(test-rest-url "/1/2/3" sum (list 1 2 3) empty)
(test-rest-url "/bar" sum empty (list "bar"))
(test-rest-url "/bar/zog" sum empty (list "bar" "zog"))
(test-rest-url "/1/2/bar" sum (list 1 2) (list "bar"))
(test-rest-url/exn sum "foo")
(test-rest-url/exn sum 'bar)
(test-rest-url/exn sum 1)
(test-rest-url/exn sum #t))))
[(define (sum req as ss) (list* (apply + as) ss))
(define-values (rest-dispatch rest-url)
(dispatch-rules
[((integer-arg) ... (string-arg) ...) sum]))
(define (test-rest-dispatch url res)
(test-equal? url (rest-dispatch (test-request (string->url url))) res))
(define (test-rest-url url . args)
(test-equal? (format "~S" args)
(apply rest-url args)
url))
(define (test-rest-url/exn . args)
(test-exn (format "~S" args)
exn?
(lambda ()
(apply rest-url args))))
(define (test-rest-dispatch/exn url)
(test-exn url exn:dispatcher? (lambda () (rest-dispatch (test-request (string->url url))))))]
(test-suite
"rest args (2)"
(test-rest-dispatch "http://www.sum.com" (list 0))
(test-rest-dispatch "http://www.sum.com/1" (list 1))
(test-rest-dispatch "http://www.sum.com/1/2" (list 3))
(test-rest-dispatch "http://www.sum.com/1/2/3" (list 6))
(test-rest-dispatch "http://www.sum.com/1/2/3/bar" (list 6 "bar"))
(test-rest-dispatch "http://www.sum.com/1/bar" (list 1 "bar"))
(test-rest-dispatch "http://www.sum.com/1/bar/zog" (list 1 "bar" "zog"))
(test-rest-dispatch "http://www.sum.com/bar/zog" (list 0 "bar" "zog"))
(test-rest-url "/" sum empty empty)
(test-rest-url "/1" sum (list 1) empty)
(test-rest-url "/1/2" sum (list 1 2) empty)
(test-rest-url "/1/2/3" sum (list 1 2 3) empty)
(test-rest-url "/bar" sum empty (list "bar"))
(test-rest-url "/bar/zog" sum empty (list "bar" "zog"))
(test-rest-url "/1/2/bar" sum (list 1 2) (list "bar"))
(test-rest-url/exn sum "foo")
(test-rest-url/exn sum 'bar)
(test-rest-url/exn sum 1)
(test-rest-url/exn sum #t))))
(test-suite
"serve")))
@ -474,5 +497,9 @@
(define (display-sum req fst snd)
`(html (head (title "Sum"))
(h1 ,(number->string (+ fst snd)))))
(serve/dispatch start))
(module+ main
(require rackunit/text-ui)
(run-tests all-dispatch-tests))

View File

@ -15,11 +15,24 @@
(url/path (app (lambda (ps) (map path/param-path ps))
(list path-pat ...)))]))
(define (method-downcase x)
(cond
[(string? x)
(string-downcase x)]
[(bytes? x)
(method-downcase (bytes->string/utf-8 x))]
[else
x]))
(define-match-expander request/url
(syntax-rules ()
[(_ url-pat)
; req = method, url, headers, bindings, post-data, host-ip, host-port, client-ip
(struct request (_ url-pat _ _ _ _ _ _))]))
(request/url (or #f "get") url-pat)]
[(_ method url-pat)
; req = method, url, headers, bindings, post-data, host-ip, host-port, client-ip
(struct request ((app method-downcase method)
url-pat _ _ _ _ _ _))]))
(provide url/path
url/paths

View File

@ -7,60 +7,76 @@
web-server/dispatch/http-expanders
web-server/dispatch/bidi-match
(for-syntax racket/base
syntax/parse
web-server/dispatch/pattern))
(define (default-else req)
(next-dispatcher))
(begin-for-syntax
(define default-method #'(or #f "get")))
(define (string-list->url strlist)
(url->string
(make-url #f #f #f #f #t
(if (empty? strlist)
(list (make-path/param "" empty))
(map (lambda (s) (make-path/param s empty))
strlist))
(list (make-path/param "" empty))
(map (lambda (s) (make-path/param s empty))
strlist))
empty #f)))
(define-syntax (dispatch-case stx)
(syntax-case stx (else)
[(_ [(path-pat ...) fun]
...
[else else-fun])
(for-each dispatch-pattern?
(syntax->list #'((path-pat ...) ...)))
(with-syntax
([((path-pat/id ...) ...)
(map dispatch-pattern->dispatch-pattern/ids
(syntax->list #'((path-pat ...) ...)))])
(syntax-parse
stx #:literals (else)
[(_ [(path-pat ...)
(~optional (~seq #:method method)
#:defaults ([method default-method]))
fun]
...
[else else-fun])
#:fail-unless
(for-each dispatch-pattern?
(syntax->list #'((path-pat ...) ...)))
"Not a dispatch pattern"
(with-syntax
([((path-pat-id ...) ...)
(map (lambda (pp/is)
(map (lambda (bs)
(with-syntax ([(bidi-id arg ... id) bs])
#'id))
(filter (lambda (pp/i)
(syntax-case pp/i ()
[(bidi-id arg ... id) #t]
[_ #f]))
(syntax->list pp/is))))
(syntax->list #'((path-pat/id ...) ...)))])
(syntax/loc stx
(lambda (the-req)
(syntax-parameterize ([bidi-match-going-in? #t])
(match the-req
[(request/url (url/paths path-pat/id ...))
(fun the-req path-pat-id ...)]
...
[_ (else-fun the-req)]))))))]
[(dc [(path-pat ...) fun]
...)
(syntax/loc stx
(dc [(path-pat ...) fun]
...
[else default-else]))]))
([((path-pat/id ...) ...)
(map dispatch-pattern->dispatch-pattern/ids
(syntax->list #'((path-pat ...) ...)))])
(with-syntax
([((path-pat-id ...) ...)
(map (lambda (pp/is)
(map (lambda (bs)
(with-syntax ([(bidi-id arg ... id) bs])
#'id))
(filter (lambda (pp/i)
(syntax-case pp/i ()
[(bidi-id arg ... id) #t]
[_ #f]))
(syntax->list pp/is))))
(syntax->list #'((path-pat/id ...) ...)))])
(syntax/loc stx
(lambda (the-req)
(syntax-parameterize ([bidi-match-going-in? #t])
(match the-req
[(request/url method (url/paths path-pat/id ...))
(fun the-req path-pat-id ...)]
...
[_ (else-fun the-req)]))))))]
[(dc [(path-pat ...)
(~optional (~seq #:method method)
#:defaults ([method default-method]))
fun]
...)
(syntax/loc stx
(dc [(path-pat ...)
#:method method
fun]
...
[else default-else]))]))
(define-syntax (dispatch-url stx)
(syntax-case stx ()
(syntax-parse
stx
[(_ [(path-pat ...) fun]
...)
(for-each dispatch-pattern?
@ -78,69 +94,99 @@
(with-syntax ([pp pp/i]
[(bidi-id arg ... id) pp/i])
(if next-...?
(syntax/loc pp/i (list pp (... ...)))
pp/i))))
(syntax->list #'((path-pat/id ...) ...)))
#;(map (lambda (pp/is)
(filter (compose not string-syntax?)
(syntax->list pp/is)))
(syntax->list #'((path-pat/id ...) ...)))]
(syntax/loc pp/i (list pp (... ...)))
pp/i))))
(syntax->list #'((path-pat/id ...) ...)))]
[((from-body ...) ...)
(map (lambda (pp/is)
(for/list ([pp/i (dispatch-pattern-not-... pp/is)]
[next-...? (dispatch-pattern-next-...? pp/is)])
(with-syntax ([pp pp/i])
(if (string-syntax? pp/i)
(syntax/loc pp/i (list pp))
(with-syntax ([(bidi-id arg ... id) pp/i])
(if next-...?
(syntax/loc pp/i id)
(syntax/loc pp/i (list id))))))))
(syntax/loc pp/i (list pp))
(with-syntax ([(bidi-id arg ... id) pp/i])
(if next-...?
(syntax/loc pp/i id)
(syntax/loc pp/i (list id))))))))
(syntax->list #'((path-pat/id ...) ...)))])
(syntax/loc stx
(syntax-parameterize ([bidi-match-going-in? #f])
(match-lambda*
[(list (? (lambda (x) (eq? x fun))) from-path-pat ...)
(string-list->url (append from-body ...))]
...)))))]))
(match-lambda*
[(list (? (lambda (x) (eq? x fun))) from-path-pat ...)
(string-list->url (append from-body ...))]
...)))))]))
(define-syntax (dispatch-rules stx)
(syntax-case stx (else)
[(_ [(path-pat ...) fun]
...
[else else-fun])
(for-each dispatch-pattern?
(syntax->list #'((path-pat ...) ...)))
(syntax/loc stx
(values
(dispatch-case [(path-pat ...) fun]
...
[else else-fun])
(dispatch-url [(path-pat ...) fun]
...)))]
[(dr [(path-pat ...) fun]
...)
(syntax/loc stx
(dr [(path-pat ...) fun]
...
[else default-else]))]))
(syntax-parse
stx #:literals (else)
[(_ [(path-pat ...)
(~optional (~seq #:method method)
#:defaults ([method default-method]))
fun]
...
[else else-fun])
(for-each dispatch-pattern?
(syntax->list #'((path-pat ...) ...)))
(syntax/loc stx
(values
(dispatch-case [(path-pat ...)
#:method method
fun]
...
[else else-fun])
(dispatch-url [(path-pat ...) fun]
...)))]
[(dr [(path-pat ...)
(~optional (~seq #:method method)
#:defaults ([method default-method]))
fun]
...)
(syntax/loc stx
(dr [(path-pat ...)
#:method method
fun]
...
[else default-else]))]))
(define (dispatch-succ . _) #t)
(define (dispatch-fail . _) #f)
(define-syntax-rule (dispatch-rules+applies
[pat fun]
...)
(let-values ([(dispatch url)
(dispatch-rules
[pat fun]
...)]
[(applies? _)
(dispatch-rules
[pat dispatch-succ]
...
[else dispatch-fail])])
(values dispatch url applies?)))
(define-syntax (dispatch-rules+applies stx)
(syntax-parse
stx #:literals (else)
[(_
[pat
(~optional (~seq #:method method)
#:defaults ([method default-method]))
fun]
...
[else else-fun])
(syntax/loc stx
(let-values ([(dispatch url)
(dispatch-rules
[pat #:method method fun]
...
[else else-fun])]
[(applies?)
(λ (req) #t)])
(values dispatch url applies?)))]
[(_
[pat
(~optional (~seq #:method method)
#:defaults ([method default-method]))
fun]
...)
(syntax/loc stx
(let-values ([(dispatch url)
(dispatch-rules
[pat #:method method fun]
...)]
[(applies?)
(dispatch-case
[pat #:method method dispatch-succ]
...
[else dispatch-fail])])
(values dispatch url applies?)))]))
(provide dispatch-case
dispatch-url

View File

@ -5,6 +5,7 @@
web-server/dispatchers/dispatch
web-server/servlet-env
web-server/dispatch/extend
(except-in syntax/parse attribute)
racket/match
racket/list
net/url
@ -103,24 +104,37 @@ or else the filesystem server will never see the requests.
@section{API Reference}
@defform*[#:literals (else)
@defform*[#:literals (else ~optional ~seq syntax or)
[(dispatch-rules
[dispatch-pattern dispatch-fun]
[dispatch-pattern
(~optional (~seq #:method method) #:defaults ([method #'(or #f "get")]))
dispatch-fun]
...
[else else-fun])
(dispatch-rules
[dispatch-pattern dispatch-fun]
[dispatch-pattern
(~optional (~seq #:method method) #:defaults ([method #'(or #f "get")]))
dispatch-fun]
...)]
#:contracts
([else-fun (request? . -> . any)]
[dispatch-fun (request? any/c ... . -> . any)])]{
Returns two values: the first is a dispatching function with the contract @racket[(request? . -> . any)]
that calls the appropriate @racket[dispatch-fun] based on the first @racket[dispatch-pattern] that matches the
request's URL; the second is a URL-generating function with the contract @racket[(procedure? any/c ... . -> . string?)]
that generates a URL using @racket[dispatch-pattern] for the @racket[dispatch-fun] given as its first argument.
If @racket[else-fun] is left out, one is provided that calls @racket[(next-dispatcher)] to signal to the Web Server that this
dispatcher does not apply.
Returns two values: the first is a dispatching function with the
contract @racket[(request? . -> . any)] that calls the appropriate
@racket[dispatch-fun] based on the first @racket[dispatch-pattern]
that matches the request's URL (and method), the second is a URL-generating
function with the contract @racket[(procedure? any/c ... . ->
. string?)] that generates a URL using @racket[dispatch-pattern] for
the @racket[dispatch-fun] given as its first argument.
If @racket[else-fun] is left out, one is provided that calls
@racket[(next-dispatcher)] to signal to the Web Server that this
dispatcher does not apply.
If any @racket[_method] is left out, it assumed to apply to requests
without methods and GET methods.
}
@racketgrammar[dispatch-pattern
@ -129,13 +143,17 @@ or else the filesystem server will never see the requests.
(bidi-match-expander ... . dispatch-pattern)
(bidi-match-expander . dispatch-pattern)]
@defform*[#:literals (else)
@defform*[#:literals (else ~optional ~seq syntax or)
[(dispatch-rules+applies
[dispatch-pattern dispatch-fun]
[dispatch-pattern
(~optional (~seq #:method method) #:defaults ([method #'(or #f "get")]))
dispatch-fun]
...
[else else-fun])
(dispatch-rules+applies
[dispatch-pattern dispatch-fun]
[dispatch-pattern
(~optional (~seq #:method method) #:defaults ([method #'(or #f "get")]))
dispatch-fun]
...)]
#:contracts
([else-fun (request? . -> . any)]
@ -144,13 +162,17 @@ or else the filesystem server will never see the requests.
@racket[#t] if the dispatching rules apply to the request and @racket[#f] otherwise.
}
@defform*[#:literals (else)
@defform*[#:literals (else ~optional ~seq syntax or)
[(dispatch-case
[dispatch-pattern dispatch-fun]
[dispatch-pattern
(~optional (~seq #:method method) #:defaults ([method #'(or #f "get")]))
dispatch-fun]
...
[else else-fun])
(dispatch-case
[dispatch-pattern dispatch-fun]
[dispatch-pattern
(~optional (~seq #:method method) #:defaults ([method #'(or #f "get")]))
dispatch-fun]
...)]
#:contracts
([else-fun (request? . -> . any)]