racket/pkgs/racket-test-core/tests/racket/stx.rktl

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Racket

(load-relative "loadtest.rktl")
(Section 'stx)
(test #t syntax? (datum->syntax #f 'hello #f))
(test #f syntax-line (datum->syntax #f 10 '(aha #f #f 19 #f)))
(test #f syntax-column (datum->syntax #f 10 '(aha #f #f 19 #f)))
(test 19 syntax-position (datum->syntax #f 10 '(aha #f #f 19 #f)))
(test 'aha syntax-source (datum->syntax #f 10 '(aha #f #f 19 #f)))
(test #f syntax-span (datum->syntax #f 10 '(aha #f #f 19 #f)))
(test 88 syntax-span (datum->syntax #f 10 '(aha #f #f 19 88)))
(test 7 syntax-line (datum->syntax #f 10 '(aha 7 88 999 #f)))
(test 88 syntax-column (datum->syntax #f 10 '(aha 7 88 999 #f)))
(test 999 syntax-position (datum->syntax #f 10 '(aha 7 88 999 #f)))
(test 'aha syntax-source (datum->syntax #f 10 '(aha 7 88 999 #f)))
(test #f syntax-span (datum->syntax #f 10 '(aha 7 88 999 #f)))
(test 22 syntax-span (datum->syntax #f 10 '(aha 7 88 999 22)))
(test 0 syntax-span (datum->syntax #f 10 '(aha 1 1 1 0)))
(test 0 syntax-column (datum->syntax #f 10 '(aha 1 0 1 0)))
(err/rt-test (datum->syntax #f 10 10))
(err/rt-test (datum->syntax #f 10 '(10)))
(err/rt-test (datum->syntax #f 10 '(10 11)))
(err/rt-test (datum->syntax #f 10 '(10 11 12)))
(err/rt-test (datum->syntax #f 10 '(10 11 12 13)))
(err/rt-test (datum->syntax #f 10 '(10 11 12 13 14 15)))
(err/rt-test (datum->syntax #f 10 '(a 11.0 12 13 14)))
(err/rt-test (datum->syntax #f 10 '(a 11 12 -13 14)))
(err/rt-test (datum->syntax #f 10 '(a 11 12 -13 14)))
(err/rt-test (datum->syntax #f 10 '(a 11 12 13 -1)))
(err/rt-test (datum->syntax #f 10 '(a 0 12 13 0)))
(err/rt-test (datum->syntax #f 10 '(a 11 -1 13 0)))
(err/rt-test (datum->syntax #f 10 '(a 11 12 0 0)))
(syntax-test #'quote-syntax)
(syntax-test #'(quote-syntax))
(syntax-test #'(quote-syntax . 7))
;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; some syntax-case patterns
;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(test 17 'syntax-case (syntax-case '(1 1 1) () [(1 ...) 17]))
(define-syntax sd (syntax-rules () [(_ v) (syntax->datum (syntax v))]))
(test '(3 1 2) 'syntax-case (syntax-case '(1 2 3) () [(a ... b) (sd (b a ...))]))
(test '(3 1 2) 'syntax-case (syntax-case '(1 2 3) () [(a ... b . c) (sd (b a ...))]))
(test '(3 1 2) 'syntax-case (syntax-case '(1 2 3) () [(a ... 3 . c) (sd (3 a ...))]))
(test 5 'syntax-case (syntax-case '(1 2 3 4) () [(a ... 3 . c) (sd (3 a ... c))][_else 5]))
(test '(3 1 2 4) 'syntax-case (syntax-case '(1 2 3 . 4) () [(a ... b . c) (sd (b a ... c))][_else 5]))
(test '(3 1 2 4) 'syntax-case (syntax-case '(1 2 (3 . 4)) () [(a ... (b . c)) (sd (b a ... c))][_else 5]))
(test '((3) 1 2 4) 'syntax-case (syntax-case '(1 2 (3 . 4)) () [(a ... (b ... . c)) (sd ((b ...) a ... c))][_else 5]))
(test '(3 1 2 4) 'syntax-case (syntax-case '(1 2 (3 . 4)) () [(a ... (b ... . c)) (sd (b ... a ... c))][_else 5]))
(test '((3) 1 2 4) 'syntax-case (syntax-case '(1 2 ((3) . 4)) () [(a ... ((b ...) ... . c)) (sd ((b ...) ... a ... c))][_else 5]))
(test '(3 1 2 4) 'syntax-case (syntax-case '(1 2 ((3) . 4)) () [(a ... ((b ...) ... . c)) (sd (b ... ... a ... c))][_else 5]))
(syntax-test (quote-syntax (syntax-case 0 () [(a ... b c ...) 1][_else 5])))
(syntax-test (quote-syntax (syntax-case 0 () [(a ... b . (c ...)) 1][_else 5])))
(syntax-test (quote-syntax (syntax-case 0 () [(a ... ...) 1][_else 5])))
(syntax-test (quote-syntax (syntax-case 0 () [(a ...) #'a][_else 5])))
(syntax-test (quote-syntax (syntax-case 0 () [(a ...) #'((a ...) ...)][_else 5])))
(syntax-test (quote-syntax (syntax-case 0 () [(a ...) #'(a ... ...)][_else 5])))
(syntax-test (quote-syntax (syntax-case 0 () [((a ...) ...) #'a][_else 5])))
(syntax-test (quote-syntax (syntax-case 0 () [((a ...) ...) #'(a ...)][_else 5])))
(syntax-test (quote-syntax (syntax-case 0 () [((a ...) ...) #'(a ... ... ...)][_else 5])))
(test 'no 'dot-literal (syntax-case #'(1 2) () [(_ . #t) 'yes] [_ 'no]))
(test 'yes 'dot-literal (syntax-case #'(1 . #t) () [(_ . #t) 'yes] [_ 'no]))
(test '(((x 3) (y 3) (z 3)) ;; each line should be x y z, not x x x...
((x 4) (y 4) (z 4))
((x 5) (y 5) (z 5)))
'ellipses
(syntax->datum (syntax-case '(_ 1 (x y z) ((3 3 3) (4 4 4) (5 5 5))) ()
[(_ x (a ...) ((b ...) ...)) #'(((a b) ...) ...)])))
(test '(((x y z 3) (x y z 3) (x y z 3))
((x y z 4) (x y z 4) (x y z 4))
((x y z 5) (x y z 5) (x y z 5)))
'ellipses
(syntax->datum (syntax-case '(_ 1 (x y z) ((3 3 3) (4 4 4) (5 5 5))) ()
[(_ x (a ...) ((b ...) ...)) #'(((a ... b) ...) ...)])))
(test '((1 z) (2 w) (x z) (y w))
'ellipses
(syntax->datum (syntax-case '(((1 2) (x y)) (z w)) ()
[(((a ...) ...) (b ...)) #'((a b) ... ...)])))
(test '(#(1) #(2 3))
'ellipses+vector
(syntax->datum
(syntax-case '((1) (2 3)) ()
[((a ...) ...) #'(#(a ...) ...)])))
(test '(1 2 3 6 8 9 0 1 2 3)
syntax->datum
(syntax-case '(((1) (2 3)) ((6)) ((8 9 0) (1 2 3))) ()
[(((a ...) ...) ...) #'(a ... ... ...)]))
(test '((1 2 3) (6) (8 9 0 1 2 3))
syntax->datum
(syntax-case '(((1) (2 3)) ((6)) ((8 9 0) (1 2 3))) ()
[(((a ...) ...) ...) #'((a ... ...) ...)]))
(test '((1) (2 3) (6) (8 9 0) (1 2 3))
syntax->datum
(syntax-case '(((1) (2 3)) ((6)) ((8 9 0) (1 2 3))) ()
[(((a ...) ...) ...) #'((a ...) ... ...)]))
(test (syntax-case #'((([n 1] [m 2]) ([p 10] [q 20]))
(([nn -1] [mm -2]) ([pp -10] [qq -20]))) ()
[((([x y] ...) ...) ...)
(syntax->datum #'(ell ((ull (+ x ...)
((- x ... y ...) ...))
...)
...))])
'fancy-ellipses
'(ell ((ull (+ n m) ((- n m 1 2) (- p q 10 20)))
(ull (+ p q) ((- nn mm -1 -2) (- pp qq -10 -20))))
((ull (+ nn mm) ((- n m 1 2) (- p q 10 20)))
(ull (+ pp qq) ((- nn mm -1 -2) (- pp qq -10 -20))))))
(test (syntax-case #'((([n 1] [m 2]) ([p 10] [q 20]))
(([nn -1] [mm -2]) ([pp -10] [qq -20]))) ()
[((([x y] ...) ...) ...)
(syntax->datum #'(ell ((ull (+ x ...)
((- x ...) ...))
...)
...))])
'fancy-ellipses
'(ell ((ull (+ n m) ((- n m) (- p q)))
(ull (+ p q) ((- nn mm) (- pp qq))))
((ull (+ nn mm) ((- n m) (- p q)))
(ull (+ pp qq) ((- nn mm) (- pp qq))))))
(test 5 syntax-e (syntax-case #'#&5 ()
[#&x #'x]))
(test '(0 1 2 3 4) syntax->datum
(syntax-case #'#&(1 2 3) ()
[#&(x ...) #'(0 x ... 4)]))
(syntax-test #'(syntax-case (syntax x) [x (define x 1)]))
(syntax-test #'(syntax-case (syntax x) () [x (define x 1)])
#rx"stx.rktl:.*no expression after a sequence of internal definitions")
(syntax-test #'(syntax-case* (syntax x) () eq? [x (define x 1)])
#rx"stx.rktl:.*no expression after a sequence of internal definitions")
;; ----------------------------------------
(test #t syntax-original? #'here)
(test #f syntax-original? ((make-syntax-introducer) #'here))
(test #t syntax-original? ((make-syntax-introducer #t) #'here))
(let* ([a (datum->syntax #f 'a)]
[a1 ((make-syntax-introducer) a)]
[a2 ((make-syntax-introducer) a)])
(test #f bound-identifier=? a1 a2)
(test #t bound-identifier=? a1 ((make-syntax-delta-introducer a1 a2) a))
(test #t bound-identifier=? a2 ((make-syntax-delta-introducer a2 a1) a))
(test #t bound-identifier=? a2 ((make-syntax-delta-introducer a2 #f) a))
(test #t bound-identifier=?
((make-syntax-delta-introducer a1 a2) a2)
((make-syntax-delta-introducer a2 a1) a1)))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Test basic expansion and property propagation
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(define (tree-map f)
(lambda (l)
(if (pair? l)
(cons ((tree-map f) (car l))
((tree-map f) (cdr l)))
(if (null? l)
null
(f l)))))
(define-syntax mcr
(lambda (stx)
(syntax-case stx ()
[(_ x) (syntax (begin x))])))
(define s (quote-syntax (mcr 5)))
(define se (expand-once s))
(syntax-case se ()
[(bg five)
(let ([bg (syntax bg)]
[five (syntax five)])
(test 'begin syntax-e bg)
(test 5 syntax-e five)
(test #t syntax-original? five)
(test #f syntax-original? bg)
'ok)])
(test #f syntax-property s 'testing)
(define-syntax mcr0
(lambda (stx)
(syntax-case stx ()
[(_) (syntax (begin 0))])))
(define s (quote-syntax (mcr0)))
(define se (expand-once s))
(test #t syntax-original? s)
(test #f syntax-original? se)
;; Check that a property in a template is preserved by #'
(define-syntax (define-define-stx stx)
(syntax-case stx ()
[(_ stx)
(with-syntax ([template (syntax-property #'(x)
'x
'y)])
#'(define stx
(with-syntax ([x #'hi])
#'template)))]))
(define-define-stx stx-with-property)
(test 'y syntax-property stx-with-property 'x)
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Plain s, se derived from part of s
(define s (syntax-property (quote-syntax (mcr 5)) 'testing 10))
(define se (expand-once s))
(test 10 syntax-property s 'testing)
(test 10 syntax-property se 'testing)
(test '(mcr) (tree-map syntax-e) (syntax-property se 'origin))
(test 10 syntax-property (datum->syntax #f 0 #f s) 'testing)
(test #t syntax-original? s)
(test #f syntax-original? se)
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Plain s, se is part of s
(define-syntax mcr2
(lambda (stx)
(syntax-case stx ()
[(_ x) (syntax x)])))
(define s (syntax-property (quote-syntax (mcr2 5)) 'testing 10))
(define se (expand-once s))
(test (syntax-e (cadr (syntax-e s))) syntax-e se)
(test 10 syntax-property s 'testing)
(test 10 syntax-property se 'testing)
(test '(mcr2) (tree-map syntax-e) (syntax-property se 'origin))
(test #t syntax-original? s)
(test #t syntax-original? se)
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Constructed s, se is part of s, part of s tagged
(define s
(syntax-property
(with-syntax ([five (syntax-property (quote-syntax 5) 'testing 12)])
(syntax (mcr2 five)))
'testing 10))
(define se (expand-once s))
(test (syntax-e (cadr (syntax-e s))) syntax-e se)
(test 10 syntax-property s 'testing)
(test '(12 . 10) syntax-property se 'testing)
(test '(mcr2) (tree-map syntax-e) (syntax-property se 'origin))
(test #t syntax-original? s)
(test #t syntax-original? se)
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; paren-shape:
(let ([s (with-syntax ([a (quote-syntax [x y])])
#'[a 10])])
(test #f syntax-property #'(x) 'paren-shape)
(test #\[ syntax-property #'[x] 'paren-shape)
(test #\[ syntax-property s 'paren-shape)
(test #\[ syntax-property (syntax-case s () [(b _) #'b]) 'paren-shape))
(let ([s (with-syntax ([(a ...) '(1 2 3)])
#'[a ...])])
(test #\[ syntax-property s 'paren-shape))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Two-step macro chain
(define-syntax mcr5
(lambda (stx)
(syntax-case stx ()
[(_ x) (syntax x)])))
(define s (quote-syntax (mcr5 (mcr2 5))))
(define se (expand-once (expand-once s)))
(test (syntax-e (cadr (syntax-e (cadr (syntax-e s))))) syntax-e se)
(test '(mcr2 mcr5)
(tree-map syntax-e)
(syntax-property se 'origin))
(test #t syntax-original? s)
(test #t syntax-original? se)
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Two-step macro chain with expansion
(define-syntax mcr7
(lambda (stx)
(syntax-case stx ()
[(_ x) (local-expand (syntax x) '(internal-define) (list (quote-syntax #%datum)))])))
(define s (quote-syntax (mcr7 (mcr2 5))))
(define se (expand-once s))
(test (syntax-e (cadr (syntax-e (cadr (syntax-e s))))) syntax-e se)
(test '((mcr2) mcr7)
(tree-map syntax-e)
(syntax-property se 'origin))
(test #t syntax-original? s)
(test #t syntax-original? se)
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Three-step macro chain, with one expansion
(define s (quote-syntax (mcr5 (mcr7 (mcr2 5)))))
(define se (expand-once (expand-once s)))
(test '((mcr2) mcr7 mcr5)
(tree-map syntax-e)
(syntax-property se 'origin))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Three-step macro chain, with other expansion
(define s (quote-syntax (mcr7 (mcr5 (mcr2 5)))))
(define se (expand-once s))
(test '((mcr2 mcr5) mcr7)
(tree-map syntax-e)
(syntax-property se 'origin))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; #%app, etc.
(define s (syntax-property (quote-syntax (add1 5)) 'testing 10))
(test 10 syntax-property (expand s) 'testing)
(define s (syntax-property (quote-syntax 5) 'testing 10))
(test 10 syntax-property (expand s) 'testing)
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Check tracking of (formerly) primitive expanders
(test '(let) (tree-map syntax-e) (syntax-property (expand #'(let ([x 10]) x)) 'origin))
(test '((let*) let*-values let*) (tree-map syntax-e) (syntax-property (expand #'(let* ([x 10]) x)) 'origin))
(test '(let) (tree-map syntax-e) (syntax-property (expand #'(let loop ([x 10]) x)) 'origin))
(test '(letrec) (tree-map syntax-e) (syntax-property (expand #'(letrec ([x 10]) x)) 'origin))
(test '(let*-values) (tree-map syntax-e) (syntax-property (expand #'(let*-values ([(x) 10]) x)) 'origin))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Symbol Keys
(test null syntax-property-symbol-keys #'a)
(let ([ssort (lambda (l)
(if (equal? l '(yep aha))
'(aha yep)
l))])
(test '(aha) syntax-property-symbol-keys (syntax-property #'a 'aha 1))
(test '(aha yep) ssort (syntax-property-symbol-keys (syntax-property (syntax-property #'a 'aha 1) 'yep 2)))
(test '(aha yep) ssort (syntax-property-symbol-keys
(syntax-property
(syntax-property
(syntax-property #'a 'aha 1)
'yep 2)
'aha 3))))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Test free-identifier=? on different phases via syntax-case*
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(module mta racket/base
(define mtax 10)
(provide mtax))
(module mtb racket/base
(define mtby 10)
(provide mtby))
(module mt1 racket/base
(require (prefix-in a: 'mta))
(require (for-syntax (prefix-in b: 'mtb)
racket/base))
(require (prefix-in mz: racket/base))
(define-syntax ck
(lambda (stx)
(syntax-case stx ()
[(_ id et?)
(with-syntax ([cmp (if (syntax-e (syntax et?))
(syntax free-transformer-identifier=?)
(syntax free-identifier=?))])
(syntax
(lambda (x)
(syntax-case* x (id) cmp
[(_ id) #t]
[else #f]))))])))
(define has-lam? (ck case-lambda #f))
(define has-mz:lam? (ck mz:case-lambda #f))
(define has-mtax? (ck a:mtax #f))
(define has-mtby? (ck b:mtby #f))
(define has-et-lam? (ck case-lambda #t))
(define has-et-mz:lam? (ck mz:case-lambda #t))
(define has-et-mtax? (ck a:mtax #t))
(define has-et-mtby? (ck b:mtby #t))
(provide has-lam? has-mz:lam? has-mtax? has-mtby?
has-et-lam? has-et-mz:lam? has-et-mtax? has-et-mtby?))
(require 'mt1)
(require (for-syntax 'mtb))
(test #t has-lam? #'(any case-lambda))
(test #f has-lam? #'(any case-lambada))
(test #t has-et-lam? #'(any case-lambda))
(test #f has-et-lam? #'(any case-lambada))
;; mz: prefix is there in normal environment:
(test #t has-mz:lam? #'(any case-lambda))
(test #f has-et-mz:lam? #'(any case-lambda))
(test #f has-mz:lam? #'(any mz:case-lambda))
(test #t has-et-mz:lam? #'(any mz:case-lambda))
;; No mtax anywhere:
(test #f has-mtax? #'(any mtax))
(test #f has-mtax? #'(any a:mtax))
(test #f has-et-mtax? #'(any mtax))
(test #t has-et-mtax? #'(any a:mtax))
;; mtby (without prefix) in trans env
(test #f has-mtby? #'(any mtby))
(test #t has-mtby? #'(any b:mtby))
(test #t has-et-mtby? #'(any mtby))
(test #f has-et-mtby? #'(any b:mtby))
(module mt2 '#%kernel
(#%require (for-syntax '#%kernel))
(#%require 'mt1)
(#%require 'mta)
;; For #':
(define-syntaxes (syntax)
(lambda (stx)
(datum->syntax
stx
(cons
(quote-syntax quote-syntax)
(cdr (syntax-e stx)))
stx)))
(define-values (run-mt2-test)
(lambda (test)
(test #t has-lam? #'(any case-lambda))
(test #f has-lam? #'(any case-lambada))
(test #t has-et-lam? #'(any case-lambda))
(test #f has-et-lam? #'(any case-lambada))
;; mz: prefix is there in normal environment:
(test #t has-mz:lam? #'(any case-lambda))
(test #f has-et-mz:lam? #'(any case-lambda))
(test #f has-mz:lam? #'(any mz:case-lambda))
(test #t has-et-mz:lam? #'(any mz:case-lambda))
;; mtax in both places normal env:
(test #t has-mtax? #'(any mtax))
(test #f has-mtax? #'(any a:mtax))
(test #f has-et-mtax? #'(any mtax))
(test #t has-et-mtax? #'(any a:mtax))
;; no mtby here
(test #f has-mtby? #'(any mtby))
(test #t has-mtby? #'(any b:mtby))
(test #f has-et-mtby? #'(any mtby))
(test #f has-et-mtby? #'(any b:mtby))))
(#%provide run-mt2-test))
(require 'mt2)
(run-mt2-test test)
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(test '(1 2 3) syntax->datum (syntax (1 2 3)))
(test '(1 ... 2 3) syntax->datum (syntax (... (1 ... 2 3))))
(syntax-test #'(syntax (a (... ...))))
(syntax-test #'(syntax (... ...)))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; identifier-binding
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(define (identifier-binding* s)
(let ([b (identifier-binding s)])
(if (list? b)
(list* (let-values ([(name base) (module-path-index-split (car b))])
;(fprintf (current-error-port) ">>>>base = ~s\n" base)
name)
(cadr b)
(let-values ([(name base) (module-path-index-split (caddr b))])
name)
(cdddr b))
b)))
(define base-lib (caddr (identifier-binding* #'lambda)))
(test `('#%kernel case-lambda ,base-lib case-lambda 0 0 0)
identifier-binding* #'case-lambda)
(test `("private/promise.rkt" delay* ,base-lib delay 0 0 0)
identifier-binding* #'delay)
(test `('#%kernel #%module-begin ,base-lib #%plain-module-begin 0 0 0)
identifier-binding* #'#%plain-module-begin)
(require (only-in racket/base [#%plain-module-begin #%pmb]))
(test '('#%kernel #%module-begin racket/base #%plain-module-begin 0 0 0)
identifier-binding* #'#%pmb)
(let ([b (identifier-binding
(syntax-case (expand #'(module m racket/base
(require (only-in racket/base [make-base-namespace s-mbn]))
s-mbn)) ()
[(mod m mz (#%mod-beg run-conf req (app call-with-values (lambda () make-base-namespace) print)))
(let ([s (syntax make-base-namespace)])
(test 's-mbn syntax-e s)
s)]))])
(let-values ([(real real-base) (module-path-index-split (car b))]
[(nominal nominal-base) (module-path-index-split (caddr b))])
(test '"namespace.rkt" values real)
(test 'make-base-namespace cadr b)
(test 'racket/base values nominal)
(test 'make-base-namespace cadddr b)))
(let ([b (identifier-binding
(syntax-case (expand #'(module m racket/base
make-base-namespace)) ()
[(mod m beg (#%mod-beg run-conf (app call-w-vals (lam () make-base-namespace) prnt)))
(let ([s (syntax make-base-namespace)])
(test 'make-base-namespace syntax-e s)
s)]))])
(let-values ([(real real-base) (module-path-index-split (car b))]
[(nominal nominal-base) (module-path-index-split (caddr b))])
(test '"namespace.rkt" values real)
(test 'make-base-namespace cadr b)
(test 'racket/base values nominal)
(test 'make-base-namespace cadddr b)))
(let ()
(define (check wrap)
(test #f identifier-binding (wrap (datum->syntax #f 'lambda)))
(test #f identifier-template-binding (wrap #'lambda))
(test (identifier-binding #'lambda) identifier-template-binding (wrap (syntax-shift-phase-level #'lambda -1)))
(test #f identifier-label-binding (wrap #'lambda))
(test (identifier-binding #'lambda) identifier-label-binding (wrap (syntax-shift-phase-level #'lambda #f)))
(test #f identifier-binding (wrap (syntax-shift-phase-level #'lambda #f)))
(test #f identifier-template-binding (wrap (syntax-shift-phase-level #'lambda #f))))
(check values)
(check (lambda (s)
(define-values (i o) (make-pipe))
(write (compile-syntax #`(quote-syntax #,s)) o)
(parameterize ([read-accept-compiled #t])
(eval (read i))))))
(module x-with-identifier-binding-of-alt racket/base
(define x 1)
(define-syntax-rule (m id)
(begin
(define x 5)
(define id #'x)))
(m x-id)
(provide x-id))
(let ([b (identifier-binding
(dynamic-require ''x-with-identifier-binding-of-alt 'x-id))])
(test #f eq? 'x (cadr b))
(test 'x cadddr b)
(test #t equal? (car b) (caddr b)))
;; Top-level bindings:
(test #f identifier-binding #'test 0)
(test #f identifier-binding #'test 0 #f)
(test '(test) identifier-binding #'test 0 #t)
(test '#f identifier-binding #'this-identifier-is-never-defined 0 #t)
(define-syntax-rule (introduce-a-definition-of-x bind-id)
(begin
(define x 10)
(define bind-id (identifier-binding #'x 0 #t))))
(introduce-a-definition-of-x sym-list-for-x)
(test #t pair? sym-list-for-x)
(test #t symbol? (car sym-list-for-x))
(test #f eq? 'x (car sym-list-for-x)) ; since macro-introduced
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; identifier-binding and (nominal) phase reporting
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(module ib-mod-1 racket/base
(require (for-syntax racket/base
(for-syntax racket/base)))
(define extra #f)
(provide extra)
(define x-1-0 0)
(provide x-1-0)
(begin-for-syntax
(define x-1-1 1)
(provide x-1-1)
(begin-for-syntax
(define x-1-2 2)
(provide x-1-2))))
(module ib-mod-2 racket/base
(require (for-syntax racket/base
(for-syntax racket/base))
'ib-mod-1)
(define x-1-0-b (identifier-binding #'x-1-0))
(define x-1-0-b+1 (identifier-transformer-binding (syntax-shift-phase-level #'x-1-0 1)))
(define x-1-0-b+f (identifier-label-binding (syntax-shift-phase-level #'x-1-0 #f)))
(define x-1-1-b (identifier-transformer-binding #'x-1-1))
(define x-1-1-b+f (identifier-label-binding (syntax-shift-phase-level #'x-1-1 #f)))
(define x-1-2-b (identifier-binding #'x-1-2 2))
(provide x-1-0-b
x-1-0-b+1
x-1-0-b+f
x-1-1-b
x-1-1-b+f
x-1-2-b))
(module ib-mod-2b racket/base
(require (for-syntax racket/base
(for-syntax racket/base))
(only-in 'ib-mod-1
x-1-1
x-1-0
x-1-2))
(define x-1-0-b2 (identifier-binding #'x-1-0))
(define x-1-0-b2+1 (identifier-transformer-binding (syntax-shift-phase-level #'x-1-0 1)))
(define x-1-0-b2+f (identifier-label-binding (syntax-shift-phase-level #'x-1-0 #f)))
(define x-1-1-b2 (identifier-transformer-binding #'x-1-1))
(define x-1-2-b2 (identifier-binding #'x-1-2 2))
(provide x-1-0-b2
x-1-0-b2+1
x-1-0-b2+f
x-1-1-b2
x-1-2-b2))
(module ib-mod-3 racket/base
(require (for-syntax racket/base
(for-syntax racket/base))
(for-template 'ib-mod-1))
(provide (for-template x-1-0)
x-1-1
(for-syntax x-1-2)
extra2)
(define extra2 #f)
(define x-1-0-b3 (identifier-template-binding #'x-1-0))
(define x-1-1-b3 (identifier-binding #'x-1-1))
(define x-1-2-b3 (identifier-transformer-binding #'x-1-2))
(provide x-1-0-b3
x-1-1-b3
x-1-2-b3))
(module ib-mod-4 racket/base
(require (for-syntax racket/base
(for-syntax racket/base))
'ib-mod-3)
(define x-1-0-b4 (identifier-template-binding #'x-1-0))
(define x-1-1-b4 (identifier-binding #'x-1-1))
(define x-1-2-b4 (identifier-transformer-binding #'x-1-2))
(provide x-1-0-b4
x-1-1-b4
x-1-2-b4))
(module ib-mod-5 racket/base
(require (for-syntax racket/base
(for-syntax racket/base))
(for-syntax 'ib-mod-3))
(define x-1-0-b5 (identifier-binding #'x-1-0))
(define x-1-1-b5 (identifier-transformer-binding #'x-1-1))
(define x-1-2-b5 (identifier-binding #'x-1-2 2))
(provide x-1-0-b5
x-1-1-b5
x-1-2-b5))
(module ib-mod-5b racket/base
(require (for-syntax racket/base
(for-syntax racket/base))
(for-syntax (only-in 'ib-mod-3
x-1-1
x-1-0
x-1-2)))
(define x-1-0-b6 (identifier-binding #'x-1-0))
(define x-1-1-b6 (identifier-transformer-binding #'x-1-1))
(define x-1-2-b6 (identifier-binding #'x-1-2 2))
(provide x-1-0-b6
x-1-1-b6
x-1-2-b6))
(module ib-mod-7 racket/base
(require (for-syntax racket/base
(for-syntax racket/base))
(for-label 'ib-mod-1))
(define x-1-0-b7 (identifier-label-binding #'x-1-0))
(define x-1-1-b7 (identifier-label-binding #'x-1-1))
(define x-1-2-b7 (identifier-label-binding #'x-1-2))
(provide x-1-0-b7
x-1-1-b7
x-1-2-b7))
(require 'ib-mod-2
'ib-mod-2b
'ib-mod-3
'ib-mod-4
'ib-mod-5
'ib-mod-5b
'ib-mod-7)
(define (simplify l)
(and l
(for/list ([v (in-list l)])
(if (module-path-index? v)
(let-values ([(name base) (module-path-index-split v)])
(cadr name))
v))))
(test '(ib-mod-1 x-1-0 ib-mod-1 x-1-0 0 0 0) simplify x-1-0-b)
(test '(ib-mod-1 x-1-0 ib-mod-1 x-1-0 0 0 0) simplify x-1-0-b+1)
(test '(ib-mod-1 x-1-0 ib-mod-1 x-1-0 0 0 0) simplify x-1-0-b+f)
(test '(ib-mod-1 x-1-0 ib-mod-1 x-1-0 0 0 0) simplify x-1-0-b2)
(test '(ib-mod-1 x-1-0 ib-mod-1 x-1-0 0 0 0) simplify x-1-0-b2+1)
(test '(ib-mod-1 x-1-0 ib-mod-1 x-1-0 0 0 0) simplify x-1-0-b2+f)
(test '(ib-mod-1 x-1-0 ib-mod-1 x-1-0 0 -1 0) simplify x-1-0-b3)
(test '(ib-mod-1 x-1-0 ib-mod-3 x-1-0 0 0 -1) simplify x-1-0-b4)
(test '(ib-mod-1 x-1-0 ib-mod-3 x-1-0 0 1 -1) simplify x-1-0-b5)
(test '(ib-mod-1 x-1-0 ib-mod-3 x-1-0 0 1 -1) simplify x-1-0-b6)
(test '(ib-mod-1 x-1-0 ib-mod-1 x-1-0 0 #f 0) simplify x-1-0-b7)
(test '(ib-mod-1 x-1-1 ib-mod-1 x-1-1 1 0 1) simplify x-1-1-b)
(test '#f simplify x-1-1-b+f)
(test '(ib-mod-1 x-1-1 ib-mod-1 x-1-1 1 0 1) simplify x-1-1-b2)
(test '(ib-mod-1 x-1-1 ib-mod-1 x-1-1 1 -1 1) simplify x-1-1-b3)
(test '(ib-mod-1 x-1-1 ib-mod-3 x-1-1 1 0 0) simplify x-1-1-b4)
(test '(ib-mod-1 x-1-1 ib-mod-3 x-1-1 1 1 0) simplify x-1-1-b5)
(test '(ib-mod-1 x-1-1 ib-mod-3 x-1-1 1 1 0) simplify x-1-1-b6)
(test '(ib-mod-1 x-1-1 ib-mod-1 x-1-1 1 #f 1) simplify x-1-1-b7)
(test '(ib-mod-1 x-1-2 ib-mod-1 x-1-2 2 0 2) simplify x-1-2-b)
(test '(ib-mod-1 x-1-2 ib-mod-1 x-1-2 2 0 2) simplify x-1-2-b2)
(test '(ib-mod-1 x-1-2 ib-mod-1 x-1-2 2 -1 2) simplify x-1-2-b3)
(test '(ib-mod-1 x-1-2 ib-mod-3 x-1-2 2 0 1) simplify x-1-2-b4)
(test '(ib-mod-1 x-1-2 ib-mod-3 x-1-2 2 1 1) simplify x-1-2-b5)
(test '(ib-mod-1 x-1-2 ib-mod-3 x-1-2 2 1 1) simplify x-1-2-b6)
(test '(ib-mod-1 x-1-2 ib-mod-1 x-1-2 2 #f 2) simplify x-1-2-b7)
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; eval versus eval-syntax, etc.
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(unless building-flat-tests?
(test eval eval 'eval)
(test eval eval eval)
(test eval eval #'eval)
(test eval eval (datum->syntax #f 'eval))
(err/rt-test (eval-syntax 'eval))
(err/rt-test (eval-syntax eval))
(test eval eval-syntax #'eval)
(test #t
'eval-syntax
(with-handlers ([exn:fail:syntax? (lambda (x) #t)])
(eval-syntax (datum->syntax #f 'eval))))
(test eval (current-eval) 'eval)
(test eval (current-eval) eval)
(test eval (current-eval) #'eval)
(test #t
'current-eval-syntax
(with-handlers ([exn:fail:syntax? (lambda (x) #t)])
((current-eval) (datum->syntax #f 'eval))))
(test eval 'compile (eval (compile 'eval)))
(test eval 'compile (eval (compile eval)))
(test eval 'compile (eval (compile #'eval)))
(test eval 'compile (eval (compile (datum->syntax #f 'eval))))
(err/rt-test (compile-syntax 'eval))
(err/rt-test (compile-syntax eval))
(test eval 'compile (eval (compile-syntax #'eval)))
(test #t
'compile-syntax
(with-handlers ([exn:fail:syntax? (lambda (x) #t)])
(compile-syntax (datum->syntax #f 'eval))))
(test eval 'expand (eval (expand 'eval)))
(test eval 'expand (eval (expand eval)))
(test eval 'expand (eval (expand #'eval)))
(test eval 'expand (eval (expand (datum->syntax #f 'eval))))
(err/rt-test (expand-syntax 'eval))
(err/rt-test (expand-syntax eval))
(test eval 'expand (eval (expand-syntax #'eval)))
(test #t
'expand-syntax
(with-handlers ([exn:fail:syntax? (lambda (x) #t)])
(expand-syntax (datum->syntax #f 'eval))))
(test eval 'expand-once (eval (expand-once 'eval)))
(test eval 'expand-once (eval (expand-once eval)))
(test eval 'expand-once (eval (expand-once #'eval)))
(test eval 'expand-once (eval (expand-once (datum->syntax #f 'eval))))
(err/rt-test (expand-syntax-once 'eval))
(err/rt-test (expand-syntax-once eval))
(test eval 'expand-once (eval (expand-syntax-once #'eval)))
(test #t
'expand-syntax-once
(with-handlers ([exn:fail:syntax? (lambda (x) #t)])
(expand-syntax-once (datum->syntax #f 'eval))))
(test eval 'expand-to-top-form (eval (expand-to-top-form 'eval)))
(test eval 'expand-to-top-form (eval (expand-to-top-form eval)))
(test eval 'expand-to-top-form (eval (expand-to-top-form #'eval)))
(test eval 'expand-to-top-form (eval (expand-to-top-form (datum->syntax #f 'eval))))
(err/rt-test (expand-syntax-to-top-form 'eval))
(err/rt-test (expand-syntax-to-top-form eval))
(test eval 'expand-to-top-form (eval (expand-syntax-to-top-form #'eval)))
(test #t syntax? (expand-syntax-to-top-form (datum->syntax #f 'eval))))
(define-syntax @$@name 'dummy)
(define-syntax @$@alias (make-rename-transformer #'@$@name))
(test (identifier-binding-symbol #'@$@name)
identifier-binding-symbol #'@$@alias)
(require (only-in racket/base [add1 increment-by-one]))
(test (identifier-binding-symbol #'add1)
identifier-binding-symbol #'increment-by-one)
(define top-level-add1 add1)
(define-syntax top-level-increment-by-one (make-rename-transformer #'top-level-add1))
(test (identifier-binding-symbol #'top-level-add1)
identifier-binding-symbol #'top-level-increment-by-one)
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; origin tracking
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Checks whether stx includes an mapping for
;; a `where' form (indicated by a symbol) going back to
;; a `what' form (another symbol)
;; If `where' is #f, look for the annotation on a let...-values
;; binding clause
(define (has-stx-property? stx where what prop)
(define (has-p? stx)
(let ([p (syntax-property stx prop)])
(and p
(let loop ([p p])
(cond
[(pair? p) (or (loop (car p))
(loop (cdr p)))]
[else (and (identifier? p)
(eq? what (syntax-e p)))])))))
(let loop ([stx stx])
(or (and (has-p? stx)
(or (eq? #t where)
(eq? (syntax-e stx) where)
(and (pair? (syntax-e stx))
(eq? (syntax-e (car (syntax-e stx)))
where))))
(syntax-case stx (#%plain-lambda case-lambda begin begin0
set! with-continuation-mark
if #%plain-app module #%plain-module-begin
define-values)
[(#%plain-lambda formals expr ...)
(ormap loop (syntax->list #'(expr ...)))]
[(case-lambda [formals expr ...] ...)
(ormap (lambda (l)
(ormap loop (syntax->list l)))
(syntax->list #'((expr ...) ...)))]
[(let ([(id ...) rhs] ...) expr ...)
(or (free-identifier=? #'let #'let-values)
(free-identifier=? #'let #'letrec-values))
(or (and (boolean? where)
(syntax-case stx ()
[(let [clause ...] expr)
(ormap has-p? (syntax->list #'(clause ...)))]))
(ormap loop (syntax->list #'(expr ...)))
(ormap loop (syntax->list #'(rhs ...))))]
[(begin expr ...)
(ormap loop (syntax->list #'(expr ...)))]
[(begin0 expr ...)
(ormap loop (syntax->list #'(expr ...)))]
[(set! id expr)
(loop #'expr)]
[(with-continuation-mark key val expr)
(or (loop #'key) (loop #'val) (loop #'expr))]
[(if test then else)
(or (loop #'test) (loop #'then) (loop #'else))]
[(#%plain-app expr ...)
(ormap loop (syntax->list #'(expr ...)))]
[(module name init body)
(loop #'body)]
[(#%plain-module-begin expr ...)
(ormap loop (syntax->list #'(expr ...)))]
[(define-values (id ...) expr)
(loop #'expr)]
[_ #f]))))
(test #t has-stx-property? (expand #'(let ([x 1]) 2)) 'let-values 'let 'origin)
;; The define-struct macro expands to begin,
(test #t has-stx-property? (expand #'(define-struct x (a))) 'begin 'define-struct 'origin)
(test #t has-stx-property? (expand #'(module m racket/base (define-struct x (a)))) 'define-values 'define-struct 'origin)
(test #t has-stx-property? (expand #'(module m racket/base (define-struct x (a)))) 'define-syntaxes 'define-struct 'origin)
;; The s macro also expands to begin:
(test #t has-stx-property? (expand #'(module m racket/base
(require (for-syntax racket/base))
(define-syntax (s stx)
#'(begin
(+ 1 10)
14))
s))
'#%app 's 'origin)
(test #t has-stx-property? (expand #'(module m racket/base
(require (for-syntax racket/base))
(define-syntax (s stx)
#'(begin
(+ 1 10)
14))
(let ()
s)))
'#%app 's 'origin)
;; Check per-clause origin from internal-defn conversion
(test #t has-stx-property? (expand #'(let () (define x 1) x)) #f 'define 'origin)
(test #t has-stx-property? (expand #'(let () (define-struct x (a)) 12)) #f 'define-struct 'origin)
;; Disappearing syntax decls:
(test #t has-stx-property? (expand #'(let () (define-syntax x 1) (define y 12) 10)) 'let-values 'x 'disappeared-binding)
(test #t has-stx-property? (expand #'(let () (define-syntax x 1) (define y y) 10)) 'letrec-values 'x 'disappeared-binding)
(test #t has-stx-property? (expand #'(let () (define-struct s (x)) 10)) 'let-values 's 'disappeared-binding)
(test #t has-stx-property? (expand #'(let () (define-syntax x 1) 10)) 'let-values 'x 'disappeared-binding)
(test #f has-stx-property? (expand #'(fluid-let-syntax ([x 1]) 10)) 'let-values 'x 'disappeared-binding)
;; Disappearing use:
(test #t has-stx-property? (expand #'(let () (define-struct a (x)) (define-struct (b a) (z)) 10))
#f 'a 'disappeared-use)
;; Check that origin is bound by disappeared binding:
(test #t has-stx-property? (expand #'(let () (define-syntax (x stx) #'(quote y)) x)) 'quote 'x 'origin)
(let ([check-expr
(lambda (expr)
(let ([e (expand expr)])
(syntax-case e ()
[(lv (bind ...) beg)
(let ([db (syntax-property #'beg 'disappeared-binding)])
(let-values ([(bg e)
(syntax-case #'beg (#%plain-app list)
[(bg () (#%plain-app list e))
(values #'bg #'e)]
[(bg () e)
(values #'bg #'e)])])
(let ([o (syntax-property e 'origin)])
(test #t (lambda (db o)
(and (list? db)
(list? o)
(<= 1 (length db) 2)
(= 1 (length o))
(andmap identifier? db)
(identifier? (car o))
(ormap (lambda (db) (free-identifier=? db (car o))) db)))
db o))))])))])
(check-expr #'(let () (letrec-syntaxes+values ([(x) (lambda (stx) #'(quote y))]) () x)))
(check-expr #'(let () (letrec-syntaxes+values ([(x) (lambda (stx) #'(quote y))]) () (list x))))
(check-expr #'(let-values () (define-syntax (x stx) #'(quote y)) x))
(check-expr #'(let-values () (define-syntax (x stx) #'(quote y)) (list x)))
(check-expr #'(let-values ([(y) 2]) (define-syntax (x stx) #'(quote y)) x))
(check-expr #'(let-values ([(y) 2]) (define-syntax (x stx) #'(quote y)) (list x)))
(check-expr #'(let () (define-syntax (x stx) #'(quote y)) x))
(check-expr #'(let () (define-syntax (x stx) #'(quote y)) (list x)))
(check-expr #'(let ([z 45]) (define-syntax (x stx) #'(quote y)) x))
(check-expr #'(let ([z 45]) (define-syntax (x stx) #'(quote y)) (list x))))
;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; protected identifiers
;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(module ++p racket/base
(require (for-syntax racket/base))
(define ++c 12)
(define-syntax (++goo stx) (syntax-protect #'++c))
(provide ++goo))
(module ++q racket/base
(require (for-syntax '++p
racket/base))
(define ++d 11)
(define-syntax (++o stx) (syntax-protect #'++d))
(define-syntax (++s stx)
(syntax-case stx ()
[(_ id) (syntax-protect
#'(define-syntax (id stx)
(datum->syntax #'here (++goo))))]))
(define-syntax (++t stx) (syntax-case stx () [(_ id) (syntax-protect #'(define-values (id) ++d))]))
(define-syntax (++t2 stx) (syntax-protect #'(begin ++d)))
(define-syntax (++t3 stx) (syntax-protect (syntax-property #'(begin0 ++d) 'certify-mode 'transparent)))
(define-syntax (++t4 stx) (syntax-case stx () [(_ id) (syntax-protect #'(define id ++d))]))
(define-syntax (++v stx) (syntax-protect #'(begin0 ++d)))
(define-syntax (++v2 stx) (syntax-protect #'(++d)))
(define-syntax (++v3 stx) (syntax-protect (syntax-property #'(begin ++d) 'certify-mode 'opaque)))
(define-syntax ++ds 17)
(define-syntax (++check-val stx)
(syntax-case stx ()
[(_ id) (syntax-protect (datum->syntax #'here (add1 (syntax-local-value #'id))))]))
(define-syntax (++o2 stx) (syntax-protect #'(++check-val ++ds)))
(define-syntax (++apply-to-ds stx)
(syntax-case stx ()
[(_ id) (syntax-protect #'(id ++ds))]))
(define-syntax (++apply-to-d stx)
(syntax-case stx ()
[(_ id) (syntax-protect #'(id ++d))]))
(provide ++o ++o2 ++s ++t ++t2 ++t3 ++t4 ++v ++v2 ++v3
++apply-to-d ++apply-to-ds))
(require '++q)
(++s ++ack)
(test 12 values ++ack)
(test 11 values ++v)
(test 11 values ++o)
(test 18 values ++o2)
(test 13 values (let () (++t id) 13))
(let-syntax ([goo (lambda (stx)
(syntax-case stx ()
[(_ id) (datum->syntax #'here (sub1 (syntax-local-value #'id)))]))])
(test 16 'goo (++apply-to-ds goo)))
(unless building-flat-tests?
(test 11 eval-syntax (expand-syntax #'++o))
(test 11 eval-syntax (syntax-case (expand-syntax #'++t2) ()
[(_ x) #'x]))
(test 11 eval-syntax (syntax-case (expand #'(++t z)) ()
[(d-v (_) x) #'x]))
(test 11 eval-syntax (syntax-case (expand-syntax #'++t3) ()
[(_ x) #'x]))
(test 11 eval-syntax (syntax-case (expand #'(++t4 z)) ()
[(d-v (_) x) #'x]))
(err/rt-test (teval (syntax-case (expand #'++v) ()
[(_ x) #'x]))
exn:fail:syntax?)
(err/rt-test (teval (syntax-case (expand #'++v2) ()
[(_ x) #'x]))
exn:fail:syntax?)
(err/rt-test (teval (syntax-case (expand #'++v3) ()
[(_ x) #'x]))
exn:fail:syntax?))
(let ()
(define (test-disarm disarm)
(let ([expr (expand-syntax #'++v)])
(test expr syntax-protect expr)
(let ([new (syntax-protect #'no-marks)])
(test #t syntax? new)
(test 'no-marks syntax-e new))
(test #t (lambda (v) (and (syntax? v) (syntax-tainted? v)))
(syntax-case expr ()
[(beg id) #'beg]))
(test #t (lambda (v) (and (syntax? v) (not (syntax-tainted? v))))
(syntax-case (disarm expr) ()
[(beg id) #'beg]))
(test #t (lambda (v) (and (syntax? v) (syntax-tainted? v)))
(syntax-case (disarm (datum->syntax expr (syntax-e expr))) ()
[(beg id) #'beg]))
(test #t (lambda (v) (and (syntax? v) (not (syntax-tainted? v))))
(syntax-case (let ([expr (disarm expr)]) (datum->syntax expr (syntax-e expr))) ()
[(beg id) #'beg]))))
(test-disarm (lambda (stx)
(syntax-disarm stx (current-code-inspector))))
(test-disarm (lambda (stx)
(syntax-disarm stx #f))))
#;
(let ([expr (expand-syntax #'(++apply-to-d ack))])
(test '(#%app (#%top . ack) ++d) syntax->datum expr)
(let ([try (lambda (cvt? other)
(syntax-recertify (datum->syntax
expr
(cons (car (syntax-e expr))
((if cvt?
(lambda (x) (datum->syntax
(cdr (syntax-e expr))
x))
values)
(cons
other
(cdr (syntax-e (cdr (syntax-e expr))))))))
expr
(current-inspector)
#f))])
(test #t syntax? (try #f #'other!))
(let ([new (try #t #'other!)])
(test #t syntax? new)
(test '(#%app other! ++d) syntax->datum new))
;; we'd prefer this to fail, but it's defined to succeed:
(test #t syntax? (try #t (syntax-case expr ()
[(ap _ d) #'d])))))
;; ----------------------------------------
(module ++m racket/base
(require (for-syntax racket/base))
(define ++x 10)
(define-syntax (++xm stx) (syntax-protect #'100))
(provide (protect-out ++x ++xm)))
(module ++n racket/base
(require (for-syntax racket/base)
'++m)
(define ++y ++x)
(define-syntax (++y-macro stx) (syntax-protect #'++x))
(define-syntax (++y-macro2 stx) (syntax-protect (datum->syntax stx '++x)))
(define-syntax (++u-macro stx) (syntax-protect #'++u))
(define-syntax (++v-macro stx) (syntax-protect #'++v))
(define-syntax ++u2 (make-rename-transformer (syntax-protect #'++u)))
(define ++u 8) ; would be unexported, but export of rename transformer exports it
(define ++v 9) ; unexported
(provide ++y ++y-macro ++y-macro2 ++u-macro ++u2 ++v-macro))
(require '++n)
(test 10 values ++y)
(test 10 values ++y-macro)
(test 8 values ++u-macro)
(test 8 values ++u2)
(test 9 values ++v-macro)
(require '++m)
(test 10 values ++x)
(test 100 values ++xm)
(test 10 values ++y-macro2)
(let ()
(define i (make-inspector))
(define n (current-namespace))
(define n2 (parameterize ([current-code-inspector i])
(make-base-empty-namespace)))
(parameterize ([current-namespace n2])
(namespace-attach-module n ''++n))
(parameterize ([current-code-inspector i]
[current-namespace n2])
(namespace-require 'racket/base)
(teval '(require '++n))
(test 10 teval '++y)
(test 10 teval '++y-macro)
(test 8 teval '++u-macro)
(test 8 teval '++u2)
(err/rt-test (teval '++y-macro2) exn:fail:contract:variable?)
(err/rt-test (teval '++x) exn:fail:contract:variable?)
(err/rt-test (teval '++xm) exn:fail:contract:variable?)
(teval '(require '++m))
(err/rt-test (teval '++x) exn:fail:syntax?)
(err/rt-test (teval '++xm) exn:fail:syntax?)
(err/rt-test (teval '++y-macro2) exn:fail:syntax?)
(teval '(module zrt racket/base
(require '++n)
(define (vy) ++y)
(define (vy2) ++y-macro)
(define (vu) ++u-macro)
(define (vu2) ++u2)
(provide vy vy2 vu vu2)))
(teval '(module zct racket/base
(require (for-syntax racket/base
'++n))
(define-syntax (wy stx) (datum->syntax #'here ++y))
(let-syntax ([goo ++y-macro]) 10)
(define-syntax (wy2 stx) (datum->syntax #'here ++y-macro))
(define-syntax (wu stx) (datum->syntax #'here ++u-macro))
(provide wy wy2 wu)))
(teval '(require 'zct))
(test 10 teval 'wy)
(test 10 teval 'wy2)
(test 8 teval 'wu)
(teval '(require 'zrt))
(test 10 teval '(vy))
(test 10 teval '(vy2))
(test 8 teval '(vu))
(test 8 teval '(vu2)))
(let ([old-insp (current-code-inspector)])
(parameterize ([current-code-inspector i]
[current-namespace n2])
(namespace-unprotect-module old-insp ''++m)))
(parameterize ([current-code-inspector i]
[current-namespace n2])
(test 10 teval '++y-macro)
(test 10 teval '++y-macro2)))
(module ++/n racket/base
(require (for-syntax racket/base))
(provide ++/get-foo)
(define-syntax foo #'10)
(define-syntax (++/get-foo stx)
(syntax-local-value #'foo)))
(require '++/n)
(test 10 values ++/get-foo)
(module ++//n racket/base
(require (for-syntax racket/base))
(provide ++//def)
(define-syntax foo #'17)
(define-syntax ++//def
(syntax-rules ()
[(_ get-foo)
(define-syntax (get-foo stx)
(syntax-local-value #'foo))])))
(require '++//n)
(++//def ++//get-foo)
(test 17 values ++//get-foo)
;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; lifting expressions
;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(define-syntax (@@foo stx)
(syntax-case stx ()
[(_ n)
(if (zero? (syntax-e #'n))
#'(list #f 0)
(with-syntax ([m (sub1 (syntax-e #'n))])
#`(list '#,(syntax-local-lift-context)
#,(syntax-local-lift-expression #'(add1 (cadr (@@foo m)))))))]))
(define lifted-output #f)
(define-syntax (@@goo stx)
(syntax-case stx ()
[(_)
(with-syntax ([id (syntax-local-lift-expression #'(set! lifted-output "lifted!"))])
#'(list lifted-output id))]))
(let ([res (@@foo 2)])
(test res '@@foo (@@foo 2))
(test res eval-syntax #'(@@foo 2))
(test res eval (expand-once #'(@@foo 2)))
(test res eval (expand-syntax-once #'(@@foo 2)))
(test res eval (expand #'(@@foo 2)))
(test res eval (expand-syntax #'(@@foo 2)))
(test res eval (expand-to-top-form #'(@@foo 2)))
(test res eval (expand-syntax-to-top-form #'(@@foo 2))))
(test (list "lifted!" (void)) '@@goo (@@goo))
(set! lifted-output #f)
(test (list "lifted!" (void)) eval (expand-once #'(@@goo)))
(test (list "lifted!" (void)) eval (expand #'(@@goo)))
(test (list "lifted!" (void)) eval (expand-to-top-form #'(@@goo)))
(module @@n racket/base
(require (for-syntax racket/base))
(define-syntax (@@foo stx)
(syntax-case stx ()
[(_ n)
(if (zero? (syntax-e #'n))
#'0
(with-syntax ([m (sub1 (syntax-e #'n))])
(syntax-local-lift-expression #'(add1 (@@foo m)))))]))
(define-syntax (@@foox stx)
(syntax-case stx ()
[(_ n)
(syntax-local-lift-expression #'n)]))
(provide @@foo @@foox))
(require (for-syntax '@@n))
(test (void) eval (expand #'(define-syntax (@@x stx) #`(list #,(@@foo 1) #,(@@foo 2) #,(@@foo 3)))))
(test (list 1 2 3) '@@x @@x)
(test (void) eval (expand #'(define-syntax (@@x stx) #`(list #,(@@foox 1) #,(@@foox 2) #,(@@foox 3)))))
(test (list 1 2 3) '@@x @@x)
(define-syntax (@@x stx) #`(list #,(@@foox 1) #,(@@foox 2) #,(@@foox 3)))
(test (list 1 2 3) '@@x @@x)
(define-syntax (@@x stx) #`(list #,(@@foo 1) #,(@@foo 2) #,(@@foo 3)))
(test (list 1 2 3) '@@x @@x)
(define-syntax (@@x stx) #`#,(@@foo 2))
(test 2 '@@x @@x)
(test 3
'ls-foo
(let-syntax ([z (lambda (stx) #`#,(@@foo 3))])
z))
(test (void) eval-syntax (expand #'(begin-for-syntax (define @@zoo (@@foo 2)))))
(define-syntax (@@x stx) #`#, @@zoo)
(test 2 '@@x/@@zoo @@x)
(begin-for-syntax (define @@zoo2 (@@foo 2)))
(define-syntax (@@x stx) #`#, @@zoo2)
(test 2 '@@x/@@zoo @@x)
(begin-for-syntax (@@foo 1))
(test (void) eval-syntax (expand #'(begin-for-syntax (@@foo 1))))
(module @@p racket/base
(require (for-syntax racket/base
'@@n))
(provide @@goo)
(define-syntax (@@goo stx) #`#,(@@foo 10)))
(require '@@p)
(test 10 '@@goo (@@goo))
(module @@m racket/base
(require (for-syntax racket/base))
(define-for-syntax prev-ctx #f)
(define-syntax (@@foo stx)
(syntax-case stx ()
[(_ n)
(if (zero? (syntax-e #'n))
#'(list #f 0)
(with-syntax ([m (sub1 (syntax-e #'n))])
(let ([prev prev-ctx])
(if prev
(unless (eq? prev (syntax-local-lift-context))
(error 'context
"mismatch: ~s vs.: ~s"
prev
(syntax-local-lift-context)))
(set! prev-ctx (syntax-local-lift-context))))
#`(list '#,(syntax-local-lift-context)
#,(syntax-local-lift-expression #'(add1 (cadr (@@foo m)))))))]))
(define @@local #f)
(define (set-local v)
(set! @@local v))
(set-local (@@foo 2))
(provide @@local))
(require '@@m)
(test 2 '@@local (cadr @@local))
(test #t '@@local (symbol? (car @@local)))
(define-syntaxes (@@local-top @@local-top2 @@local-top3)
(let ([mk
(lambda (stops)
(lambda (stx)
(syntax-case stx ()
[(_ expr)
(let ([v (local-expand/capture-lifts #'expr
(list (gensym))
stops
#f
'the-key)])
;; make sure that it's a `begin' form:
(syntax-case v (begin)
[(begin e ... e0) v]))])))])
(values
(mk (list #'begin #'#%top))
(mk null)
(mk #f))))
(let ([res (let ([x 5]) (@@foo 1))])
(test res 'let-foo (let ([x 5]) (@@foo 1)))
(test res eval (expand #'(let ([x 5]) (@@foo 1)))))
(test '(the-key 1) 'local-foo (let ([x 5]) (@@local-top (@@foo 1))))
(test '(the-key 1) eval (expand #'(let ([x 5]) (@@local-top (@@foo 1)))))
(test '(the-key 1) eval (expand #'(@@local-top (@@foo 1))))
(test '(the-key 1) eval (expand #'(@@local-top2 (@@foo 1))))
(test '(the-key 1) eval (expand #'(@@local-top3 (@@foo 1))))
;; Check for distinct top-level contexts for different namespaces:
(module example-that-uses-the-lift-context racket/base
(require (for-syntax racket/base))
(provide m)
(define-for-syntax ht (make-hash))
(define-syntax (m stx)
(or (hash-ref ht (syntax-local-lift-context) #f)
(let ([id (syntax-local-lift-expression #`(quote #,(gensym)))])
(hash-set! ht (syntax-local-lift-context) id)
id))))
(dynamic-require ''example-that-uses-the-lift-context 0)
(let ([go
(lambda ()
(define orig-ns (current-namespace))
(parameterize ([current-namespace (make-base-namespace)])
(namespace-attach-module orig-ns ''example-that-uses-the-lift-context)
(namespace-require ''example-that-uses-the-lift-context)
(test (eval 'm) eval 'm)
(eval '(module extra-module racket/base
(require 'example-that-uses-the-lift-context)))
(dynamic-require ''extra-module 0)
(let ([ns (module->namespace ''extra-module)])
(test (eval 'm ns) eval 'm ns)
(test #f eq? (eval 'm) (eval 'm ns)))))])
(go)
(go)
(go))
;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Check interaction of macro-introduced/lifted names and
;; module->namespace
(let ([go-once
(lambda (eval)
(parameterize ([current-namespace (make-base-namespace)])
(eval '(module mm racket/base
(require (for-syntax racket/base))
(define-syntax (define$ stx)
(syntax-case stx ()
[(_ id val)
(with-syntax ([x (datum->syntax #f 'x)])
#'(begin
(define x val)
(define-syntax (id stx) #'x)))]))
(define$ a 1)
(define$ b 2)
(printf "~a ~a\n" a b)))
(eval '(require 'mm))
(eval '(current-namespace (module->namespace ''mm)))
(test '(1 2) eval '(list a b))
(eval '(define$ c 7))
(test '(1 2 7) eval '(list a b c))
(eval '(define$ d 8))
(test '(1 2 7 8) eval '(list a b c d)))
(parameterize ([current-namespace (make-base-namespace)])
(eval '(module mm racket/base
(require (for-syntax racket/base))
(define-syntax (define$ stx)
(syntax-case stx ()
[(_ id val)
(with-syntax ([x (syntax-local-lift-expression #'val)])
#'(define-syntax (id stx) #'x))]))
(define$ a 1)
(define$ b 2)
(printf "~a ~a\n" a b)))
(eval '(require 'mm))
(eval '(current-namespace (module->namespace ''mm)))
(eval '(define$ c 7))
(test '(1 2 7) eval '(list a b c))
(eval '(define$ d 8))
(test '(1 2 7 8) eval '(list a b c d))))])
(go-once eval)
(go-once (lambda (e) (eval (expand e)))))
;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; layers of lexical binding
#|
This test is supposed to fail, now:
(test '(1 2) 'macro-nested-lexical
(let ()
(define-syntax (m stx)
(with-syntax ([x1 (let ([x 0]) #'x)]
[x2 (let ([x 0]) #'x)])
#'(begin
(define x1 1)
(define x2 2)
(list x1 x2))))
(m)))
(module @!$m racket/base
(require (for-syntax racket/base))
(define-syntax (d stx)
(syntax-case stx ()
[(_ id)
(with-syntax ([x1 (let ([x 0]) #'x)]
[x2 (let ([x 0]) #'x)])
#'(begin
(define x1 10)
(define x2 20)
(define id (list x1 x2
(list? (identifier-binding (quote-syntax x1)))))))]))
(d @!$get)
(provide @!$get))
(require '@!$m)
(test '(10 20 #t) '@!$get @!$get)
|#
(test '(12)
eval
(expand
#'(let ([b 12])
(let-syntax ([goo (lambda (stx)
#`(let ()
(define #,(syntax-local-introduce #'b) 1)
(define z (list b))
z))])
(goo)))))
;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Test lazy unmarshaling of renamings and module-name resolution
(let ([load-ok? #t]
[old (current-module-name-resolver)])
(parameterize ([current-namespace (make-base-namespace)]
[current-module-name-resolver
(case-lambda
[(name ns)
(if (equal? name "a")
(void)
(old name ns))]
[(name _ __) (make-resolved-module-path 'huh?)]
[(name base stx load?)
(if (equal? name "a")
(begin
(unless load-ok?
(test #f 'load-ok load?))
(make-resolved-module-path 'a))
(old name base stx load?))])])
(let ([a-code '(module a racket/base
(provide x y)
(define x 1)
(define y #'x))])
(eval a-code)
(let ([b-code (let ([p (open-output-bytes)])
(write (compile
'(module b racket/base
(require "a")
(provide f)
(define (f) #'x)))
p)
(lambda ()
(parameterize ([read-accept-compiled #t])
(read (open-input-bytes (get-output-bytes p))))))]
[x-id (parameterize ([current-namespace (make-base-namespace)])
(eval a-code)
(eval '(require 'a))
(eval '#'x))])
(eval (b-code))
(eval '(require 'b))
(set! load-ok? #f)
(test #f eval '(free-identifier=? (f) #'x))
(test #t eval `(free-identifier=? (f) (quote-syntax ,x-id)))
(eval '(require 'a))
(test #t eval '(free-identifier=? (f) #'x))
;; check namespace fallbacks:
(test #t eval `(free-identifier=? (f) (quote-syntax ,x-id)))
(test #t free-identifier=? (eval '(f)) x-id)
(parameterize ([current-namespace (make-base-namespace)])
(eval '(module a racket/base
(provide y)
(define y 3)))
(set! load-ok? #t)
(eval (b-code))
(eval '(require 'b))
(set! load-ok? #f)
(test #t eval '(free-identifier=? (f) #'x))
(test #f eval `(free-identifier=? (f) (quote-syntax ,x-id))))))))
(test #t free-identifier=? #'lambda #'lambda 0 1)
(test #f free-identifier=? #'lambda #'lambda 0 4)
(require (for-meta 4 racket/base))
(test #t free-identifier=? #'lambda #'lambda 0 4)
;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; certification example from the manual
(module @-m racket/base
(require (for-syntax racket/base))
(provide def-go)
(define (unchecked-go n x)
(+ n 17))
(define-syntax (def-go stx)
(syntax-case stx ()
[(_ go)
#'(define-syntax (go stx)
(syntax-case stx ()
[(_ x)
#'(unchecked-go 8 x)]))])))
(module @-n racket/base
(require '@-m)
(def-go go)
(go 10)) ; access to unchecked-go is allowed
(require '@-n)
;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Propagating inactive certificates through a transparent macro-expansion
;; result:
(module @!m racket/base
(require (for-syntax racket/base))
(provide define-x)
(define-syntax (define-x stx)
(syntax-case stx ()
[(_ x)
#'(define-syntax (x stx)
#'(begin
(define-y y 10)))]))
(define-syntax define-y
(syntax-rules ()
[(_ id v)
(define id v)])))
(module @!n racket/base
(require '@!m)
(define-x def-y)
(def-y))
;; If we get here, then macro expansion didn't fail.
;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Check that the free-identifier=? cache doesn't kick in too eagerly.
(module @w@ racket/base
(define add '+)
(provide (rename-out [add plus])))
(module @q@ racket/base
(require (for-syntax racket/base))
(provide result)
(define-for-syntax a #'plus)
(define-for-syntax b #'plus)
(define-for-syntax accum null)
(begin-for-syntax
(set! accum (cons (free-identifier=? a #'plus)
accum)))
(require '@w@)
(begin-for-syntax
(set! accum (list*
(free-identifier=? a #'plus)
(free-identifier=? b #'plus)
accum)))
(define-syntax (accumulated stx)
(datum->syntax stx `',accum))
(define result (accumulated)))
(require '@q@)
(test '(#t #t #t) values result)
;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Test namespace-attach with phase-levels -2 and 2
(module tn racket/base
(require racket/file)
(define tmp10 (make-temporary-file))
(provide tmp10)
)
(module @!a racket/base
(require 'tn)
(provide x)
(with-output-to-file tmp10
#:exists 'append
(lambda ()
(printf "a\n")))
(define x 5))
(module @!b racket/base
(provide get-x)
(require (for-meta -2 '@!a))
(define (get-x) #'x))
(module @!c racket/base
(require 'tn)
(require (for-meta 2 '@!b)
(for-syntax racket/base
(for-syntax racket/base)))
(define-syntax (foo stx)
(let-syntax ([ref-x (lambda (stx)
#`(quote-syntax #,(get-x)))])
(ref-x)))
(with-output-to-file tmp10
#:exists 'append
(lambda ()
(printf "~s\n" (foo)))))
(require 'tn)
(define (check-tmp10 s)
(test s with-input-from-file tmp10 (lambda () (read-string 1000))))
(require '@!c)
(check-tmp10 "a\n5\n")
(let ()
(define n (make-base-namespace))
(namespace-attach-module (current-namespace) ''@!c n)
(test 5
'use-a
(parameterize ([current-namespace n])
;; Shouldn't instantiate new:
(namespace-require ''@!a)
;; Should see `x' from @!a:
(eval 'x)))
(check-tmp10 "a\n5\n"))
(when (file-exists? tmp10)
(delete-file tmp10))
;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Make sure post-ex renames aren't simplied away too soon:
(module @simp@ racket/base
(require (for-syntax racket/base))
(define-syntax-rule (foo)
(begin
(define-for-syntax goo #'intro)
(define intro 5)
(define-syntax (extract stx)
#`(quote #,(identifier-binding goo)))
(define @simp@tst (extract))
(provide @simp@tst)))
(foo))
(require '@simp@)
(test #t list? @simp@tst)
;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Check marshaling of compiled code to disallow
;; unreadable values in a hash-table literal
;; cyclic hash table as a bad "constant":
(err/rt-test (let ([s (open-output-bytes)])
(write (compile `(quote ,(let ([ht (make-hasheq)])
(hash-set! ht #'bad ht)
ht)))
s)
(get-output-bytes s))
exn:fail?)
;; non-cyclic variant:
(err/rt-test (let ([s (open-output-bytes)])
(write (compile `(quote ,(let ([ht (make-hasheq)])
(hash-set! ht #'bad 10)
ht)))
s)
(get-output-bytes s))
exn:fail?)
;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; define-syntax-rule
(define-syntax-rule (a-rule-pattern x [y z])
(list 'x 'y 'z))
(test '(1 2 3) 'a-rule (a-rule-pattern 1 [2 3]))
(test '(1 2 3) 'a-rule (a-rule-pattern 1 . ([2 3])))
(test '(1 2 3) 'a-rule (a-rule-pattern 1 [2 . (3)]))
(syntax-test #'a-rule-pattern)
(syntax-test #'(a-rule-pattern 1 2 3))
(syntax-test #'(a-rule-pattern 1 . 2))
(syntax-test #'(a-rule-pattern . 1))
(syntax-test #'(a-rule-pattern 1 [2 3] 4))
(let ([no-match? (lambda (exn)
(regexp-match? #"does not match pattern" (exn-message exn)))])
(error-test #'a-rule-pattern no-match?)
(error-test #'(a-rule-pattern) no-match?)
(error-test #'(a-rule-pattern 1) no-match?))
;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Extra taint tests
(define (syntax-touch s) (datum->syntax s (syntax-e s)))
(test #f syntax-tainted? #'x)
(test #f syntax-tainted? (syntax-touch #'x))
(test #f syntax-tainted? (syntax-arm #'x))
(test #t syntax-tainted? (syntax-touch (syntax-arm #'x)))
(test #t syntax-tainted? (car (syntax-e (syntax-arm #'(x y)))))
(test #f syntax-tainted? (car (syntax-e (syntax-arm (syntax-property #'(x y)
'taint-mode
'transparent)
#f #t))))
(test #f syntax-tainted? (car (syntax-e (syntax-arm (syntax-property #'(x y)
'certify-mode
'transparent)
#f #t))))
(test #f ormap syntax-tainted? (syntax-e (syntax-arm #'(begin x) #f #t)))
(test #t andmap syntax-tainted? (syntax-e (syntax-arm (syntax-property #'(begin x)
'taint-mode
'opaque)
#f #t)))
(test #f andmap syntax-tainted? (syntax-e (cadr (syntax-e (syntax-arm #'(define-values (x y z) (values 1 2 3))
#f #t)))))
(test #f andmap syntax-tainted? (syntax-e
(cadr
(syntax-e
(cadr
(syntax-e
(syntax-arm #'(begin (define-values (x y z) (values 1 2 3)))
#f #t)))))))
(let ([round-trip
(lambda (stx)
(parameterize ([current-namespace (make-base-namespace)])
(let ([s (open-output-bytes)])
(write (compile `(quote-syntax ,stx)) s)
(parameterize ([read-accept-compiled #t])
(eval (read (open-input-bytes (get-output-bytes s))))))))])
(test #f syntax-tainted? (round-trip (syntax-arm (quote-syntax foo))))
(test #t syntax-tainted? (syntax-touch (round-trip (syntax-arm (quote-syntax foo)))))
(test #t syntax-tainted? (round-trip (syntax-touch (syntax-arm (quote-syntax foo))))))
;; Make sure that a taint-transparent syntax object loses its lexical context:
(let ([b-stx #'(begin 1)])
(test #t free-identifier=? #'begin (datum->syntax b-stx 'begin))
(let ([a-b-stx (parameterize ([current-namespace (make-base-namespace)])
(eval '(define-syntax-rule (b e)
(begin e)))
(expand '(b 1)))])
(test #f free-identifier=? #'begin (datum->syntax a-b-stx 'begin))
(test #t free-identifier=? #'begin (syntax-case a-b-stx ()
[(b . _) (datum->syntax #'b 'begin)]))))
;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; syntax-debug-info
(let ([check (lambda (syntax-debug-info)
(test 'x hash-ref (syntax-debug-info #'x) 'name)
(test 'nope hash-ref (syntax-debug-info #'1) 'name 'nope)
(test 'nope hash-ref (syntax-debug-info #'(x y)) 'name 'nope))])
(check syntax-debug-info)
(parameterize ([current-namespace (make-base-namespace)])
(eval '(require (prefix-in foo: racket/base)))
(check (lambda (stx) (syntax-debug-info (namespace-syntax-introduce stx))))))
;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Check that attacks are thwarted via `syntax-local-get-shadower'
;; or `make-syntax-delta-introducer':
(module secret-value-42 racket
(define secret 42)
(define-syntax-rule (m) (even? secret))
(provide m))
(require 'secret-value-42)
(define-syntax (evil-via-shadower stx)
(syntax-case stx ()
[(_ e)
(let* ([ee (local-expand #'e 'expression null)]
[id (with-syntax ([(app f x) ee]) #'f)]
[okid (syntax-local-get-shadower id)])
#`(let ([#,okid values])
#,ee))]))
(define-syntax (evil-via-delta-introducer stx)
(syntax-case stx ()
[(_ e)
(let* ([ee (local-expand #'e 'expression null)]
[id (with-syntax ([(app f x) ee]) #'f)]
[okid ((make-syntax-delta-introducer id #'e) #'even?)])
#`(let ([#,okid values])
#,ee))]))
(syntax-test #'(evil-via-shadower (m)))
(syntax-test #'(evil-via-delta-introducer (m)))
;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Check that a for-syntax reference can precede a
;; for-syntax definition
(module pre-definition-reference racket/base
(require (for-syntax racket/base))
(provide (for-syntax f g))
(define-for-syntax (f x) (g (+ x 1)))
(define-for-syntax (g y) (+ y 2)))
(require 'pre-definition-reference)
(test 3 'use (let-syntax ([m (lambda (stx) (datum->syntax stx (f 0)))])
m))
(syntax-test #'(module unbound-reference racket/base
(require (for-syntax racket/base))
(define-for-syntax (f x) nonesuch)))
(syntax-test #'(module unbound-reference racket/base
(require (for-syntax racket/base))
(#%expression
(let-syntax ([g (lambda (stx) nonesuch)])
10))))
;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; `syntax-transforming?' and `syntax-transforming-module-expression?'
(test #f syntax-transforming?)
(test #f syntax-transforming-module-expression?)
(test #t 'trans (let-syntax ([m (lambda (stx)
(datum->syntax stx (syntax-transforming?)))])
(m)))
(test #f 'trans-mod (let-syntax ([m (lambda (stx)
(datum->syntax stx (syntax-transforming-module-expression?)))])
(m)))
(let ([o (open-output-string)])
(parameterize ([current-output-port o])
(eval `(module m racket/base
(require (for-syntax racket/base))
(define-syntax (m stx)
(displayln (syntax-transforming-module-expression?))
#'1)
(m)))
(eval `(module m racket/base
(require (for-syntax racket/base))
(begin-for-syntax
(displayln (syntax-transforming-module-expression?))))))
(test "#t\n#f\n" get-output-string o))
;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Check that a common wraps encoding that is detected only
;; after simplification and encoding is shared propery. If
;; it's not shared properly in this example, a gensym for
;; the internal-definition context gets duplicated.
(parameterize ([current-namespace (make-base-namespace)])
(define e
(compile '(module producer racket/base
(#%module-begin
(require (for-syntax racket/base))
(define-syntax (compare stx)
(syntax-case stx ()
[(_ formal body)
(let ()
(define (internal-definition-context-apply ctx s)
(syntax-case (local-expand #`(quote-syntax #,s)
'expression
(list #'quote-syntax)
ctx) ()
[(qs e) #'e]))
(define ctx (syntax-local-make-definition-context))
(syntax-local-bind-syntaxes (list #'formal) #f ctx)
(internal-definition-context-seal ctx)
(with-syntax ([one
(internal-definition-context-apply ctx #'formal)]
[two
(syntax-local-introduce
(internal-definition-context-apply
ctx
(syntax-local-introduce
(internal-definition-context-apply ctx #'body))))])
(unless (free-identifier=? #'one #'two)
(error 'before
"identifiers were never the same"))
#'(begin-for-syntax
(unless (free-identifier=? #'one #'two)
(error 'after
"identifiers used to be the same, but now are not")))))]))
(compare z z)))))
(let ([o (open-output-bytes)])
(write e o)
(parameterize ([read-accept-compiled #t])
(eval (read (open-input-bytes (get-output-bytes o))))))
(namespace-require ''producer)
(eval 10))
;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Check handling of module context
(module mm-context-m1 racket/base
(require (for-syntax racket/base))
(provide m1)
(define-syntax (m1 stx)
#`(begin
(define #,(syntax-local-introduce #'x) 1)
#,(syntax-local-introduce #'x))))
(module mm-context-m2 racket/base
(require (for-syntax racket/base))
(provide m2)
(define-syntax (m2 stx)
#`(begin
(define #,(syntax-local-introduce #'x) 2)
#,(syntax-local-introduce #'x))))
(module mm-context-m3 racket/base
(require 'mm-context-m1 'mm-context-m2)
(m1)
(m2))
(let ([o (open-output-bytes)])
(parameterize ([current-output-port o])
(dynamic-require ''mm-context-m3 #f))
(test #"1\n2\n" get-output-bytes o))
;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Check `quasisyntax' finds `unsyntax'
(with-syntax ([a #'1] [(c ...) #'(3 4 5)])
(let ([b #'2] [ds (list #'3 #'4 #'5)])
(test '(1 2) syntax->datum (quasisyntax (a (unsyntax b))))
(test '(2 1) syntax->datum (quasisyntax ((unsyntax b) a)))
(test '(1 . 2) syntax->datum (quasisyntax (a unsyntax b)))
(test '((1) (2)) syntax->datum (quasisyntax ((a) ((unsyntax b)))))
(test '#(1 2) syntax->datum (quasisyntax #(a (unsyntax b))))
(test '#(1 2 3 4 5) syntax->datum (quasisyntax #(a (unsyntax b) c ...)))
(test '#s(PS 1 2) syntax->datum (quasisyntax #s(PS a (unsyntax b))))
(test '#s(PS 1 2 3 4 5) syntax->datum (quasisyntax #s(PS a (unsyntax b) c ...)))
#|
(test '#(1 2 3 4 5) syntax->datum (quasisyntax #(a (unsyntax b) (unsyntax-splicing ds))))
(test '#s(PS 1 2 3 4 5) syntax->datum
(quasisyntax #s(PS a (unsyntax b) (unsyntax-splicing ds))))
|#))
(syntax-test #'(quasisyntax unsyntax))
(syntax-test #'(quasisyntax (unsyntax)))
(syntax-test #'(quasisyntax (unsyntax 1 2)))
(syntax-test #'(quasisyntax unsyntax-splicing))
(syntax-test #'(quasisyntax (unsyntax-splicing)))
(syntax-test #'(quasisyntax (unsyntax-splicing 1 2)))
;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Check preservation of properties by `quasisyntax'
(test #\[ syntax-property #'[x] 'paren-shape)
(test #\[ syntax-property #`[x] 'paren-shape)
(test #\[ syntax-property #`[x #,#'y] 'paren-shape)
(test #\[ syntax-property #`[0 #,@(list #'1 #'2)] 'paren-shape)
(test #\[ syntax-property #`[0 #,@null] 'paren-shape)
(test #\[ syntax-property (quasisyntax [x (unsyntax (syntax y))]) 'paren-shape)
(test #\[ syntax-property (quasisyntax [x y]) 'paren-shape)
;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Check that quasisyntax in quasisyntax doesn't infinite loop
(test #t syntax? (quasisyntax (quote-syntax quasisyntax)))
(test #t syntax? (quasisyntax (quasisyntax . x)))
(test #t syntax? (quasisyntax (list quasisyntax)))
(test #t syntax? (quasisyntax (x . (quasisyntax . x))))
;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Check srcloc on result of `syntax-local-value/immediate':
(let ()
(define-syntax (displayln-syntax-local-value/immediate stx)
(syntax-case stx ()
[(_ id)
(let-values ([(x y)
(syntax-local-value/immediate (datum->syntax #'id
(syntax-e #'id)))])
#`#,(syntax-source y))]))
(define-syntax ++ (make-rename-transformer (datum->syntax #'here '+)))
(test #f values (displayln-syntax-local-value/immediate ++)))
;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Check that syntax structure is preserved precisely with
;; #'(a . ()) as opposed to #'(a)
(let ()
(define-values (i o) (make-pipe))
(write (compile #'#'(a)) o)
(close-output-port o)
(define s (parameterize ([read-accept-compiled #t])
(read i)))
(test #t null? (cdr (syntax-e (eval s)))))
(let ()
(define-values (i o) (make-pipe))
(write (compile #'#'(a . ())) o)
(close-output-port o)
(define s (parameterize ([read-accept-compiled #t])
(read i)))
(test #t syntax? (cdr (syntax-e (eval s)))))
;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Check interation of bindings across namespaces:
(let ()
(define ns1 (make-base-namespace))
(define ns2 (make-base-namespace))
(eval '(require (only-in racket/base [add1 cons])) ns1)
;; In `ns1`, `cons` refers to `add1`
;; In `ns2`, `cons` refers to `cons`
(define cons-id/ns1 (eval '(quote-syntax cons) ns1))
(test add1 eval cons-id/ns1 ns1)
(test add1 eval cons-id/ns1 ns2)
(eval `(define ,cons-id/ns1 1) ns2)
(test 1 eval cons-id/ns1 ns2)
(test cons eval 'cons ns2)
(test 1 eval (quasiquote (let () (define ,cons-id/ns1 1) ,cons-id/ns1)) ns2))
(module x-id-is-alias-for-plus racket/base
(provide x-id)
(require (only-in racket/base [+ x]))
(define x-id #'x))
(let ([x-id (dynamic-require ''x-id-is-alias-for-plus 'x-id)])
(define ns (make-base-namespace))
(eval '(require (only-in racket/base [- x])) ns)
(test - eval 'x ns)
(test + eval x-id ns))
;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Check that a phase shift also shifts fallback contexts
(let ()
(define ns (make-base-namespace))
(define (evalx e)
(parameterize ([current-namespace ns])
(eval-syntax (expand (datum->syntax #f e)))))
(evalx '(module m racket/base (provide e) (define e #'1)))
(evalx '(module n racket/base (require (for-syntax 'm)) (provide s) (define-syntax (s stx) e)))
(evalx '(require 'n))
(err/rt-test (evalx 's) (lambda (exn) (regexp-match? #rx"literal data is not allowed" (exn-message exn)))))
;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Check source-location reporting by `raise-syntax-error`
(let ()
(define (check a0 a1 . args)
(err/rt-test (apply raise-syntax-error #f "oops" a0 a1 args)
(lambda (exn)
(and (exn:fail:syntax? exn)
(regexp-match? (format "^([a-zA-Z]:)?[^:\n]*:~a:~a:"
(or (syntax-line a1)
(syntax-line a0))
(or (syntax-column a1)
(syntax-column a0)))
(exn-message exn))))))
(define stx #'(a b))
(define a-stx (car (syntax-e stx)))
(check stx a-stx)
(check stx #f)
(check #f a-stx))
;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Test prop:rename-transformer with procedure content
(begin-for-syntax
(struct slv-struct-1 (id)
#:property prop:rename-transformer
(λ (o) (slv-struct-1-id o)))
(struct slv-struct-2 (t1? t1 t2)
#:property prop:rename-transformer
(λ (o)
(if (slv-struct-2-t1? o)
(slv-struct-2-t1 o)
(slv-struct-2-t2 o))))
(struct slv-struct-bad ()
#:property prop:rename-transformer
(λ (o) 'not-an-identifier)))
(let ()
(define-syntax target-1 't1)
(define-syntax target-2 't2)
(define-syntax (m stx)
(syntax-case stx ()
[(_ id)
#`(quote #,(syntax-local-value #'id) )]))
(define-syntax (m2 stx)
(syntax-case stx ()
[(_ id)
(let-values ([(x y) (syntax-local-value/immediate #'id)])
#`(list (quote #,(if (rename-transformer? x) 'rename-transformer x))
(quote #,(and y (syntax-e y)))))]))
(define-syntax s1 (slv-struct-1 #'target-1))
(define-syntax s2 (slv-struct-1 #'target-2))
(define-syntax s3 (make-rename-transformer #'target-2))
(define-syntax s4 (slv-struct-1 #'s3))
(define-syntax s5 (slv-struct-2 #t #'target-1 #'target-2))
(define-syntax s6 (slv-struct-2 #f #'target-1 #'target-2))
(define-syntax s7 (slv-struct-2 #t #'s3 #'target-2))
(define-syntax s8 (slv-struct-2 #f #'s3 #'target-2))
(define-syntax s9 (make-rename-transformer #'s8))
(test 't1 values (m s1))
(test '(rename-transformer target-1) values (m2 s1))
(test 't2 values (m s2))
(test '(rename-transformer target-2) values (m2 s2))
(test 't2 values (m s4))
(test '(rename-transformer s3) values (m2 s4))
(test 't1 values (m s5))
(test '(rename-transformer target-1) values (m2 s5))
(test 't2 values (m s6))
(test '(rename-transformer target-2) values (m2 s6))
(test 't2 values (m s7))
(test '(rename-transformer s3) values (m2 s7))
(test 't2 values (m s8))
(test '(rename-transformer target-2) values (m2 s8))
(test 't2 values (m s9))
(test '(rename-transformer s8) values (m2 s9))
(define target-3 't3)
(define target-4 't4)
(define-syntax r1 (slv-struct-1 #'target-3))
(define-syntax r2 (slv-struct-1 #'target-4))
(define-syntax r3 (slv-struct-2 #t #'target-3 #'target-4))
(define-syntax r4 (slv-struct-2 #f #'target-3 #'target-4))
(test 't3 values r1)
(test 't4 values r2)
(test 't3 values r3)
(test 't4 values r4)
(err/rt-test
(let ()
(struct foo () #:property prop:rename-transformer (λ (x y) 3))
(void))
exn:fail:contract?)
(err/rt-test
(eval #'(let () (define-syntax s-bad (slv-struct-bad)) (m s-bad)))
exn:fail:contract?))
;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(parameterize ([current-namespace (make-base-namespace)])
(eval '(require (for-syntax racket/base)))
(eval
'(define-syntax (m stx)
(define x (car (generate-temporaries '(1))))
(syntax-case stx ()
[(_ lib name)
#`(begin (require (only-in lib [name #,x]))
(define-syntax name
(make-rename-transformer (quote-syntax #,x)))
name)])))
(eval '(m racket/base values)))
;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Check marshaling and unmarshaling with relative paths
(let ()
(define dir (find-system-path 'temp-dir))
(define x (parameterize ([current-namespace (make-base-namespace)])
(compile (datum->syntax #f '#'x (vector (build-path dir "sub" "x.rkt")
1
1
1
1)))))
(define-values (i o) (make-pipe))
(parameterize ([current-write-relative-directory
(cons (build-path dir "nested")
dir)])
(write x o))
(test (build-path dir "inner" 'up "sub" "x.rkt")
syntax-source
(eval (parameterize ([read-accept-compiled #t]
[current-load-relative-directory (build-path dir "inner")])
(read i)))))
;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Check that shadowing doesn't create an ill-formed internal
;; representation of binding:
(let ()
;; Make introducers before namespace, so they have older scopes, which
;; means that bindings will be attached to the namespace's scope:
(define i1 (make-syntax-introducer))
(define i2 (make-syntax-introducer))
(define ns (make-base-namespace))
(eval `(define car 0) ns)
(eval `(define ,(i1 (datum->syntax #f 'car)) 1) ns)
(eval `(define ,(i2 (datum->syntax #f 'car)) 2) ns)
(eval `(require racket/base) ns) ; replaces plain `car` mapping
(write (compile-syntax
#`(quote-syntax #,(parameterize ([current-namespace ns])
(namespace-syntax-introduce (datum->syntax #f 'car)))))
(open-output-bytes)))
;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Check that reading a compiled module doesn't mutate the
;; shared "self" modix for a submodule:
(parameterize ([current-namespace (make-base-namespace)])
(define o (open-output-bytes))
(write (compile `(module name-1 racket/base (module+ inside))) o)
(define m
(parameterize ([read-accept-compiled #t])
(read (open-input-bytes (get-output-bytes o)))))
(define s (expand `(module name-2 racket/base (module+ inside (define check-me 1)))))
(test "(|expanded module| inside)"
format
"~s"
(resolved-module-path-name
(let loop ([s s])
(cond
[(identifier? s)
(and (equal? 'check-me (syntax-e s))
(module-path-index-resolve (car (identifier-binding s))))]
[(syntax? s) (loop (syntax-e s))]
[(pair? s)
(or (loop (car s)) (loop (cdr s)))]
[else #f])))))
;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(let ([zo-bounce
(lambda (stx)
(define o (open-output-bytes))
(write (compile #`(quote-syntax #,stx)) o)
(eval
(parameterize ([read-accept-compiled #t])
(read (open-input-bytes (get-output-bytes o))))))])
(test #\{ syntax-property (zo-bounce #'{0}) 'paren-shape)
(test #\[ syntax-property (zo-bounce #'[0]) 'paren-shape)
(test #f syntax-property (zo-bounce (syntax-property #'[0] 'something-else 1))
'something-else)
(test 1 syntax-property (zo-bounce (syntax-property #'[0] 'something-else 1 #t))
'something-else)
(define s0 (syntax-property
(syntax-property
(syntax-property #'[0]
'something-else 1 #t)
'something-not-saved 2)
'a-third-thing 3 #t))
(define s (zo-bounce s0))
;; Like `s`, but without source locations or paren shape:
(define sx (zo-bounce
(syntax-property
(syntax-property
(syntax-property (datum->syntax #f '[0])
'something-else 1 #t)
'something-not-saved 2)
'a-third-thing 3 #t)))
(test #\[ syntax-property s 'paren-shape)
(test #f syntax-property sx 'paren-shape)
(test #\[ syntax-property s0 'paren-shape)
(test #t syntax-property-preserved? s 'paren-shape)
(test #f syntax-property-preserved? sx 'paren-shape)
(test #t syntax-property-preserved? s0 'paren-shape)
(test 1 syntax-property s 'something-else)
(test 1 syntax-property sx 'something-else)
(test 1 syntax-property s0 'something-else)
(test #t syntax-property-preserved? s 'something-else)
(test #t syntax-property-preserved? sx 'something-else)
(test #t syntax-property-preserved? s0 'something-else)
(test #f syntax-property s 'something-not-saved)
(test 2 syntax-property s0 'something-not-saved)
(test #f syntax-property-preserved? s 'something-not-saved)
(test #f syntax-property-preserved? s0 'something-not-saved)
(test 3 syntax-property s 'a-third-thing)
(test 3 syntax-property sx 'a-third-thing)
(test 3 syntax-property s0 'a-third-thing)
(test #t syntax-property-preserved? s 'a-third-thing)
(test #t syntax-property-preserved? sx 'a-third-thing)
(test #t syntax-property-preserved? s0 'a-third-thing)
;; 'paren-shape has a special default:
(test #t syntax-property-preserved? (syntax-property #'#f 'paren-shape #\() 'paren-shape)
;; Without 'paren-shape ------------------------------
(define s2-0 (syntax-property
(syntax-property
(syntax-property #'0 'something-else 1.0 #t)
'something-not-saved 2.0)
'a-third-thing 3.0 #t))
(define s2 (zo-bounce s2-0))
(test #f syntax-property s2 'paren-shape)
(test #f syntax-property s2-0 'paren-shape)
(test 1.0 syntax-property s2 'something-else)
(test 1.0 syntax-property s2-0 'something-else)
(test #t syntax-property-preserved? s2 'something-else)
(test #t syntax-property-preserved? s2-0 'something-else)
(test #f syntax-property s2 'something-not-saved)
(test 2.0 syntax-property s2-0 'something-not-saved)
(test #f syntax-property-preserved? s2 'something-not-saved)
(test #f syntax-property-preserved? s2-0 'something-not-saved)
(test 3.0 syntax-property s2 'a-third-thing)
(test 3.0 syntax-property s2-0 'a-third-thing)
(test #t syntax-property-preserved? s2 'a-third-thing)
(test #t syntax-property-preserved? s2-0 'a-third-thing)
;; Check value encoding and decoding:
(define prop-val (list 1
1.0
(vector-immutable 'a "apple" #"apple")
(vector-immutable)
(vector 7 8 9)
(hash 'a 1 'b 2)
(hasheq 'a 1 'b 2)
(box-immutable 3/4)
(box 'b)
#rx"."))
(define s3 (syntax-property #'3 'saved prop-val #t))
(test prop-val syntax-property (zo-bounce s3) 'saved)
(define s4 (syntax-property #'4 'saved-stx (vector-immutable s3 #'cons) #t))
(define p-v (syntax-property (zo-bounce s4) 'saved-stx))
(test #t vector? p-v)
(test prop-val syntax-property (vector-ref p-v 0) 'saved)
(test #t free-identifier=? #'cons (vector-ref p-v 1))
(define (check-bad val)
(err/rt-test (zo-bounce (syntax-property #'#f 'saved val #t))
(lambda (exn) (regexp-match #rx"write: disallowed" (exn-message exn)))))
(check-bad (lambda (x) x))
(check-bad (mcons 1 2))
(check-bad (read (open-input-string "#0=(1 . #0#)")))
(check-bad void))
;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(report-errs)