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01fded8c77
* module/sxml/sxml-match.ss (sxml-match1): Invoke ESCAPE via
`call-with-values'.
* test-suite/tests/sxml-match-tests.ss ("test multiple value returns"):
New test.
* module/sxml/match.scm: Mention the modification.
310 lines
12 KiB
Scheme
310 lines
12 KiB
Scheme
(define-syntax compile-match
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(syntax-rules ()
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[(compile-match pat action0 action ...)
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(lambda (x)
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(sxml-match x [pat action0 action ...]))]))
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(run-test "basic match of a top-level pattern var"
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(sxml-match '(e 3 4 5)
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[,y (list "matched" y)])
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'("matched" (e 3 4 5)))
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(run-test "match of simple element contents with pattern vars"
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((compile-match (e ,a ,b ,c) (list a b c)) '(e 3 4 5))
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'(3 4 5))
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(run-test "match a literal pattern within a element pattern"
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((compile-match (e ,a "abc" ,c) (list a c)) '(e 3 "abc" 5))
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'(3 5))
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(run-test "match an empty element"
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((compile-match (e) "match") '(e))
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"match")
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(run-test "match a nested element"
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((compile-match (e ,a (f ,b ,c) ,d) (list a b c d)) '(e 3 (f 4 5) 6))
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'(3 4 5 6))
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(run-test "match a dot-rest pattern within a nested element"
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((compile-match (e ,a (f . ,y) ,d) (list a y d)) '(e 3 (f 4 5) 6))
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'(3 (4 5) 6))
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(run-test "match a basic list pattern"
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((compile-match (list ,a ,b ,c ,d ,e) (list a b c d e)) '("i" "j" "k" "l" "m"))
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'("i" "j" "k" "l" "m"))
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(run-test "match a list pattern with a dot-rest pattern"
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((compile-match (list ,a ,b ,c . ,y) (list a b c y)) '("i" "j" "k" "l" "m"))
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'("i" "j" "k" ("l" "m")))
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(run-test "basic test of a multi-clause sxml-match"
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(sxml-match '(a 1 2 3)
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((a ,n) n)
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((a ,m ,n) (+ m n))
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((a ,m ,n ,o) (list "matched" (list m n o))))
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'("matched" (1 2 3)))
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(run-test "basic test of a sxml-match-let"
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(sxml-match-let ([(a ,i ,j) '(a 1 2)])
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(+ i j))
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3)
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(run-test "basic test of a sxml-match-let*"
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(sxml-match-let* ([(a ,k) '(a (b 1 2))]
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[(b ,i ,j) k])
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(list i j))
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'(1 2))
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(run-test "match of top-level literal string pattern"
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((compile-match "abc" "match") "abc")
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"match")
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(run-test "match of top-level literal number pattern"
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((compile-match 77 "match") 77)
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"match")
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(run-test "test of multi-expression guard in pattern"
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(sxml-match '(a 1 2 3)
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((a ,n) n)
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((a ,m ,n) (+ m n))
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((a ,m ,n ,o) (guard (number? m) (number? n) (number? o)) (list "guarded-matched" (list m n o))))
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'("guarded-matched" (1 2 3)))
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(run-test "basic test of multiple action items in match clause"
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((compile-match 77 (display "") "match") 77)
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"match")
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(define simple-eval
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(lambda (x)
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(sxml-match x
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[,i (guard (integer? i)) i]
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[(+ ,x ,y) (+ (simple-eval x) (simple-eval y))]
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[(* ,x ,y) (* (simple-eval x) (simple-eval y))]
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[(- ,x ,y) (- (simple-eval x) (simple-eval y))]
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[(/ ,x ,y) (/ (simple-eval x) (simple-eval y))]
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[,otherwise (error "simple-eval: invalid expression" x)])))
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(run-test "basic test of explicit recursion in match clauses"
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(simple-eval '(* (+ 7 3) (- 7 3)))
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40)
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(define simple-eval2
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(lambda (x)
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(sxml-match x
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[,i (guard (integer? i)) i]
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[(+ ,[x] ,[y]) (+ x y)]
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[(* ,[x] ,[y]) (* x y)]
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[(- ,[x] ,[y]) (- x y)]
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[(/ ,[x] ,[y]) (/ x y)]
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[,otherwise (error "simple-eval: invalid expression" x)])))
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(run-test "basic test of anonymous catas"
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(simple-eval2 '(* (+ 7 3) (- 7 3)))
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40)
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(define simple-eval3
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(lambda (x)
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(sxml-match x
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[,i (guard (integer? i)) i]
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[(+ ,[simple-eval3 -> x] ,[simple-eval3 -> y]) (+ x y)]
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[(* ,[simple-eval3 -> x] ,[simple-eval3 -> y]) (* x y)]
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[(- ,[simple-eval3 -> x] ,[simple-eval3 -> y]) (- x y)]
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[(/ ,[simple-eval3 -> x] ,[simple-eval3 -> y]) (/ x y)]
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[,otherwise (error "simple-eval: invalid expression" x)])))
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(run-test "test of named catas"
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(simple-eval3 '(* (+ 7 3) (- 7 3)))
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40)
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; need a test case for cata on a ". rest)" pattern
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(run-test "successful test of attribute matching: pat-var in value position"
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(sxml-match '(e (@ (z 1)) 3 4 5)
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[(e (@ (z ,d)) ,a ,b ,c) (list d a b c)]
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[,otherwise #f])
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'(1 3 4 5))
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(run-test "failing test of attribute matching: pat-var in value position"
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(sxml-match '(e (@ (a 1)) 3 4 5)
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[(e (@ (z ,d)) ,a ,b ,c) (list d a b c)]
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[,otherwise #f])
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#f)
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(run-test "test of attribute matching: literal in value position"
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((compile-match (e (@ (z 1)) ,a ,b ,c) (list a b c)) '(e (@ (z 1)) 3 4 5))
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'(3 4 5))
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(run-test "test of attribute matching: default-value spec in value position"
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((compile-match (e (@ (z (,d 1))) ,a ,b ,c) (list d a b c)) '(e 3 4 5))
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'(1 3 4 5))
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(run-test "test of attribute matching: multiple attributes in pattern"
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((compile-match (e (@ (y ,e) (z ,d)) ,a ,b ,c) (list e d a b c)) '(e (@ (z 1) (y 2)) 3 4 5))
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'(2 1 3 4 5))
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(run-test "basic test of ellipses in pattern; no ellipses in output"
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((compile-match (e ,i ...) i) '(e 3 4 5))
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'(3 4 5))
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(run-test "test of non-null tail pattern following ellipses"
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((compile-match (e ,i ... ,a ,b) i) '(e 3 4 5 6 7))
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'(3 4 5 ))
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(define simple-eval4
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(lambda (x)
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(sxml-match x
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[,i (guard (integer? i)) i]
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[(+ ,[x*] ...) (apply + x*)]
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[(* ,[x*] ...) (apply * x*)]
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[(- ,[x] ,[y]) (- x y)]
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[(/ ,[x] ,[y]) (/ x y)]
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[,otherwise (error "simple-eval: invalid expression" x)])))
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(run-test "test of catas with ellipses in pattern"
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(simple-eval4 '(* (+ 7 3) (- 7 3)))
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40)
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(run-test "simple test of ellipses in pattern and output"
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((compile-match (e ,i ...) ((lambda rst (cons 'f rst)) i ...)) '(e 3 4 5))
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'(f 3 4 5))
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(define simple-eval5
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(lambda (x)
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(sxml-match x
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[,i (guard (integer? i)) i]
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[(+ ,[x*] ...) (+ x* ...)]
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[(* ,[x*] ...) (* x* ...)]
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[(- ,[x] ,[y]) (- x y)]
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[(/ ,[x] ,[y]) (/ x y)]
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[,otherwise (error "simple-eval: invalid expression" x)])))
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(run-test "test of catas with ellipses in pattern and output"
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(simple-eval5 '(* (+ 7 3) (- 7 3)))
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40)
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(run-test "test of nested dots in pattern and output"
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((lambda (x)
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(sxml-match x
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[(d (a ,b ...) ...)
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(list (list b ...) ...)]))
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'(d (a 1 2 3) (a 4 5) (a 6 7 8) (a 9 10)))
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'((1 2 3) (4 5) (6 7 8) (9 10)))
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(run-test "test successful tail pattern match (after ellipses)"
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(sxml-match '(e 3 4 5 6 7) ((e ,i ... 6 7) #t) (,otherwise #f))
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#t)
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(run-test "test failing tail pattern match (after ellipses), too few items"
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(sxml-match '(e 3 4 5 6) ((e ,i ... 6 7) #t) (,otherwise #f))
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#f)
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(run-test "test failing tail pattern match (after ellipses), too many items"
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(sxml-match '(e 3 4 5 6 7 8) ((e ,i ... 6 7) #t) (,otherwise #f))
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#f)
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(run-test "test failing tail pattern match (after ellipses), wrong items"
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(sxml-match '(e 3 4 5 7 8) ((e ,i ... 6 7) #t) (,otherwise #f))
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#f)
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(run-test "test of ellipses in output quasiquote"
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(sxml-match '(e 3 4 5 6 7)
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[(e ,i ... 6 7) `("start" ,i ... "end")]
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[,otherwise #f])
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'("start" 3 4 5 "end"))
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(run-test "test of ellipses in output quasiquote, with more complex unquote expression"
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(sxml-match '(e 3 4 5 6 7)
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[(e ,i ... 6 7) `("start" ,(list 'wrap i) ... "end")]
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[,otherwise #f])
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'("start" (wrap 3) (wrap 4) (wrap 5) "end"))
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(run-test "test of a quasiquote expr within the dotted unquote expression"
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(sxml-match '(e 3 4 5 6 7)
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[(e ,i ... 6 7) `("start" ,`(wrap ,i) ... "end")]
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[,otherwise #f])
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'("start" (wrap 3) (wrap 4) (wrap 5) "end"))
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(define xyzpq '(d (a 1 2 3) (a 4 5) (a 6 7 8) (a 9 10)))
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(run-test "quasiquote tests"
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(sxml-match xyzpq
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[(d (a ,b ...) ...)
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`(,`(,b ...) ...)])
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'((1 2 3) (4 5) (6 7 8) (9 10)))
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(run-test "quasiquote tests"
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(sxml-match xyzpq
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[(d (a ,b ...) ...)
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(list (list b ...) ...)])
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'((1 2 3) (4 5) (6 7 8) (9 10)))
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(run-test "quasiquote tests"
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(sxml-match xyzpq
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[(d (a ,b ...) ...)
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`(xx ,`(y ,b ...) ...)])
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'(xx (y 1 2 3) (y 4 5) (y 6 7 8) (y 9 10)))
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(run-test "quasiquote tests"
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(sxml-match xyzpq
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[(d (a ,b ...) ...)
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`(xx ,@(map (lambda (i) `(y ,@i)) b))])
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'(xx (y 1 2 3) (y 4 5) (y 6 7 8) (y 9 10)))
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(run-test "quasiquote tests"
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(sxml-match xyzpq
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[(d (a ,b ...) ...)
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`(xx ,(cons 'y b) ...)])
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'(xx (y 1 2 3) (y 4 5) (y 6 7 8) (y 9 10)))
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(run-test "quasiquote tests"
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(sxml-match xyzpq
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[(d (a ,b ...) ...)
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`(xx ,`(y ,b ...) ...)])
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'(xx (y 1 2 3) (y 4 5) (y 6 7 8) (y 9 10)))
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(run-test "quasiquote tests"
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(sxml-match xyzpq
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[(d (a ,b ...) ...)
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`(xx ,`(y ,@b) ...)])
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'(xx (y 1 2 3) (y 4 5) (y 6 7 8) (y 9 10)))
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(run-test "quasiquote tests"
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(sxml-match xyzpq
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[(d (a ,b ...) ...)
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`((,b ...) ...)])
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'((1 2 3) (4 5) (6 7 8) (9 10)))
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(run-test "quasiquote tests"
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(sxml-match xyzpq
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[(d (a ,b ...) ...)
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`(xx (y ,b ...) ...)])
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'(xx (y 1 2 3) (y 4 5) (y 6 7 8) (y 9 10)))
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(define (prog-trans p)
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(sxml-match p
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[(Program (Start ,start-time) (Duration ,dur) (Series ,series-title)
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(Description . ,desc)
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,cl)
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`(div (p ,start-time
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(br) ,series-title
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(br) ,desc)
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,cl)]
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[(Program (Start ,start-time) (Duration ,dur) (Series ,series-title)
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(Description . ,desc))
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`(div (p ,start-time
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(br) ,series-title
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(br) ,desc))]
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[(Program (Start ,start-time) (Duration ,dur) (Series ,series-title))
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`(div (p ,start-time
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(br) ,series-title))]))
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(run-test "test for shrinking-order list of pattern clauses"
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(prog-trans '(Program (Start "2001-07-05T20:00:00") (Duration "PT1H") (Series "HomeFront")))
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'(div (p "2001-07-05T20:00:00" (br) "HomeFront")))
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(run-test "test binding of unmatched attributes"
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(sxml-match '(a (@ (z 1) (y 2) (x 3)) 4 5 6)
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[(a (@ (y ,www) . ,qqq) ,t ...)
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(list www qqq t ...)])
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'(2 ((z 1) (x 3)) 4 5 6))
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(run-test "test binding all attributes"
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(sxml-match '(a (@ (z 1) (y 2) (x 3)) 4 5 6)
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[(a (@ . ,qqq) ,t ...)
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(list qqq t ...)])
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'(((z 1) (y 2) (x 3)) 4 5 6))
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(run-test "test multiple value returns"
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(call-with-values
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(lambda ()
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(sxml-match '(foo)
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((foo) (values 'x 'y))))
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(lambda (x y)
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(cons x y)))
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'(x . y))
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