svn: r13556
original commit: b9560ae309e03bbfc9675d418e0ce6a08c52452f
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48d2aa54a3
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@ -1,76 +1,76 @@
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#lang scheme
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(provide (except-out (all-from-out scheme)
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#%module-begin)
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(rename-out [module-begin #%module-begin])
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(all-from-out scribble/basic
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scribble/manual)
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chunk)
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(require (for-syntax scheme/base syntax/boundmap scheme/list)
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scribble/manual
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scribble/struct
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scribble/basic
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scribble/decode)
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(begin-for-syntax
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(define main-id #f)
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(define code-blocks (make-free-identifier-mapping))
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(define (get-id-exprs id)
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(free-identifier-mapping-get code-blocks id (lambda () '())))
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(define (get-block id)
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(map syntax-local-introduce (get-id-exprs id)))
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(define (add-to-block! id exprs)
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(unless main-id (set! main-id id))
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(free-identifier-mapping-put!
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code-blocks id
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`(,@(get-id-exprs id) ,@(map syntax-local-introduce exprs)))))
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(define :make-splice make-splice)
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(define-syntax (chunk stx)
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(syntax-case stx ()
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[(_ name expr ...)
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(begin
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(unless (identifier? #'name)
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(raise-syntax-error #f "expected a chunk name" stx #'name))
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(unless (regexp-match #rx"^<.*>$" (symbol->string (syntax-e #'name)))
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(raise-syntax-error #f "chunk names must begin and end with angle brackets, <...>"
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stx
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#'name))
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(add-to-block! #'name (syntax->list #'(expr ...)))
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#`(:make-splice
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(list
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(italic #,(format "~a = " (syntax-e #'name)))
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(schemeblock expr ...))))]))
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(define-syntax (tangle stx)
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#`(begin
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#,@(let loop ([block (get-block main-id)])
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(append-map (lambda (expr)
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(if (identifier? expr)
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(let ([subs (get-block expr)])
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(if (pair? subs) (loop subs) (list expr)))
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(let ([subs (syntax->list expr)])
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(if subs
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(list (loop subs))
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(list expr)))))
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block))))
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(define-syntax (module-begin stx)
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(syntax-case stx ()
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[(module-begin expr ...)
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(with-syntax ([doc (datum->syntax stx 'doc stx)]
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;; this forces expansion so `chunk' can appear anywhere, if
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;; it's allowed only at the toplevel, then there's no need
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;; for it
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[(expr ...)
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(map (lambda (expr) (local-expand expr 'module '()))
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(syntax->list #'(expr ...)))])
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;; define doc as the binding that has all the scribbled documentation
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#'(#%module-begin
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(define doc '())
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(provide doc)
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(set! doc (cons expr doc)) ...
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(tangle)
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(set! doc (decode (reverse doc)))))]))
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#lang scheme
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(provide (except-out (all-from-out scheme)
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#%module-begin)
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(rename-out [module-begin #%module-begin])
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(all-from-out scribble/basic
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scribble/manual)
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chunk)
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(require (for-syntax scheme/base syntax/boundmap scheme/list)
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scribble/manual
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scribble/struct
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scribble/basic
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scribble/decode)
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(begin-for-syntax
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(define main-id #f)
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(define code-blocks (make-free-identifier-mapping))
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(define (get-id-exprs id)
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(free-identifier-mapping-get code-blocks id (lambda () '())))
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(define (get-block id)
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(map syntax-local-introduce (get-id-exprs id)))
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(define (add-to-block! id exprs)
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(unless main-id (set! main-id id))
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(free-identifier-mapping-put!
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code-blocks id
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`(,@(get-id-exprs id) ,@(map syntax-local-introduce exprs)))))
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(define :make-splice make-splice)
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(define-syntax (chunk stx)
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(syntax-case stx ()
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[(_ name expr ...)
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(begin
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(unless (identifier? #'name)
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(raise-syntax-error #f "expected a chunk name" stx #'name))
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(unless (regexp-match #rx"^<.*>$" (symbol->string (syntax-e #'name)))
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(raise-syntax-error #f "chunk names must begin and end with angle brackets, <...>"
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stx
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#'name))
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(add-to-block! #'name (syntax->list #'(expr ...)))
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#`(:make-splice
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(list
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(italic #,(format "~a = " (syntax-e #'name)))
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(schemeblock expr ...))))]))
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(define-syntax (tangle stx)
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#`(begin
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#,@(let loop ([block (get-block main-id)])
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(append-map (lambda (expr)
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(if (identifier? expr)
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(let ([subs (get-block expr)])
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(if (pair? subs) (loop subs) (list expr)))
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(let ([subs (syntax->list expr)])
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(if subs
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(list (loop subs))
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(list expr)))))
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block))))
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(define-syntax (module-begin stx)
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(syntax-case stx ()
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[(module-begin expr ...)
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(with-syntax ([doc (datum->syntax stx 'doc stx)]
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;; this forces expansion so `chunk' can appear anywhere, if
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;; it's allowed only at the toplevel, then there's no need
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;; for it
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[(expr ...)
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(map (lambda (expr) (local-expand expr 'module '()))
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(syntax->list #'(expr ...)))])
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;; define doc as the binding that has all the scribbled documentation
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#'(#%module-begin
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(define doc '())
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(provide doc)
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(set! doc (cons expr doc)) ...
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(tangle)
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(set! doc (decode (reverse doc)))))]))
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@ -1,7 +1,7 @@
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#lang s-exp syntax/module-reader
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"literate-lang.ss"
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#:read read-inside
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#:read-syntax read-syntax-inside
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#:whole-body-readers? #t
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(require scribble/reader)
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#lang s-exp syntax/module-reader
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"literate-lang.ss"
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#:read read-inside
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#:read-syntax read-syntax-inside
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#:whole-body-readers? #t
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(require scribble/reader)
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