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Comment:Fixes for new use of poly-branch macros
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SHA3-256: 7bb712ef16687570089285d0a0f36a1178b9b515088e2ab3b42ee4bcdf51a881
User & Date: joel on 2019-03-16 21:22:37
Other Links: manifest | tags
Context
2019-03-19
03:31
Use a tag instead of metas for title. Use default-title consistently. Refine first-words to be smarter about punctutation. Closes [c055cacb] and fixes [b3ade0b7] check-in: e81b4199 user: joel tags: trunk
2019-03-16
21:22
Fixes for new use of poly-branch macros check-in: 7bb712ef user: joel tags: trunk
20:44
Clarify poly-branch macro names (resolves [fbbb5ed9]) check-in: 6b60dccb user: joel tags: trunk
Changes
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Modified code-docs/pollen.scrbl from [3dd46911] to [0a71a786].

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@defproc[#:kind "syntax"
         (poly-branch-kwargs-tag (id symbol?))
         (-> txexpr?)]

Works just like @racket[poly-branch-tag], but uses Pollen’s @racket[define-tag-function] so that
keyword arguments will automatically be parsed as X-expression attributes.




@margin-note{The thought behind having two macros so similar is that, by cutting out handling for keyword
arguments, @racket[poly-branch-tag] could produce simpler and faster code. I have not verified if
this intuition is meaningful or correct.}

@section{Markup reference}









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@defproc[#:kind "syntax"
         (poly-branch-kwargs-tag (id symbol?))
         (-> txexpr?)]

Works just like @racket[poly-branch-tag], but uses Pollen’s @racket[define-tag-function] so that
keyword arguments will automatically be parsed as X-expression attributes.

Additionally, the branch functions called from the new function must accept exactly two arguments:
a list of attributes and a list of elements.

@margin-note{The thought behind having two macros so similar is that, by cutting out handling for keyword
arguments, @racket[poly-branch-tag] could produce simpler and faster code. I have not verified if
this intuition is meaningful or correct.}

@section{Markup reference}
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Modified pollen.rkt from [c42202f2] to [d257d515].

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  (syntax-parse stx
    [(_ TAG:id)
     (with-syntax ([((POLY-TARGET POLY-FUNC) ...) 
                    (for/list ([target (in-list (setup:poly-targets))])
                              (list target (format-id stx "~a-~a" target #'TAG)))]
                   [DEFAULT-FUNC (format-id stx "html-~a" #'TAG)])
       #'(define-tag-function (TAG attributes elems)
           (define args (cons attributes elems))
           (case (current-poly-target)
             [(POLY-TARGET) (apply POLY-FUNC args)] ... 
             [else (apply DEFAULT-FUNC args)])))]))

;; Like above, but uses `define` instead of `define-tag-function`.
;; Use this when you know you will not need keyword arguments.
;;
(define-syntax (poly-branch-tag stx)
  (syntax-parse stx
    [(_ TAG:id)








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  (syntax-parse stx
    [(_ TAG:id)
     (with-syntax ([((POLY-TARGET POLY-FUNC) ...) 
                    (for/list ([target (in-list (setup:poly-targets))])
                              (list target (format-id stx "~a-~a" target #'TAG)))]
                   [DEFAULT-FUNC (format-id stx "html-~a" #'TAG)])
       #'(define-tag-function (TAG attributes elems)

           (case (current-poly-target)
             [(POLY-TARGET) (POLY-FUNC attributes elems)] ... 
             [else (DEFAULT-FUNC attributes elems)])))]))

;; Like above, but uses `define` instead of `define-tag-function`.
;; Use this when you know you will not need keyword arguments.
;;
(define-syntax (poly-branch-tag stx)
  (syntax-parse stx
    [(_ TAG:id)
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(poly-branch-tag blockquote)
(poly-branch-tag newthought)
(poly-branch-tag smallcaps)
(poly-branch-tag center)
(poly-branch-tag section)
(poly-branch-tag subsection)
(poly-branch-tag code)
(poly-branch-tag blockcode)
(poly-branch-kwargs-tag verse)          ; [#:title ""] [#:italic "no"]

(poly-branch-tag link)
(poly-branch-tag url)
(poly-branch-tag fn)
(poly-branch-tag fndef)









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(poly-branch-tag blockquote)
(poly-branch-tag newthought)
(poly-branch-tag smallcaps)
(poly-branch-tag center)
(poly-branch-tag section)
(poly-branch-tag subsection)
(poly-branch-tag code)
(poly-branch-kwargs-tag blockcode)
(poly-branch-kwargs-tag verse)          ; [#:title ""] [#:italic "no"]

(poly-branch-tag link)
(poly-branch-tag url)
(poly-branch-tag fn)
(poly-branch-tag fndef)
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Modified tags-html.rkt from [12093157] to [a6c4e837].

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(define html-item (default-tag-function 'li))
(define html-section (default-tag-function 'h2))
(define html-subsection (default-tag-function 'h3))
(define html-newthought (default-tag-function 'span #:class "newthought"))
(define html-smallcaps (default-tag-function 'span #:class "smallcaps"))
(define html-center (default-tag-function 'div #:style "text-align: center"))

(define-tag-function (html-root attrs elements)
  (define first-pass
    (decode-elements elements
                     #:txexpr-elements-proc decode-hardwrapped-paragraphs
                     #:exclude-tags '(script style figure table pre)))
  (define second-pass
    (decode-elements first-pass
                     #:block-txexpr-proc detect-newthoughts
                     #:inline-txexpr-proc decode-link-urls
                     #:string-proc (compose1 smart-quotes smart-dashes)
                     #:exclude-tags '(script style pre code)))
  `(body ,@second-pass ,(html-footnote-block)))

(define-tag-function (html-blockcode attrs elems)
  (define file (or (assoc 'filename attrs) ""))
  (define codeblock `(pre [[class "code"]] (code ,@elems)))
  (cond [(string>? file "") `(@ (div [[class "listing-filename"]] 128196 " " ,file) ,codeblock)]
        [else codeblock]))

(define-tag-function (html-verse attrs elems)
  (let* ([title  (or (assoc 'title attrs) "")]
         [italic? (assoc 'italic attrs)]
         [pre-attrs (cond [italic? '([class "verse"] [style "font-style: italic"])]
                          [else '([class "verse"])])]
         [pre-title (cond [(string>? title "") '(p [[class "verse-heading"]] ,title)]
                          [else ""])])
    `(div [[class "poem"]] (pre ,pre-attrs ,pre-title ,@elems))))








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(define html-item (default-tag-function 'li))
(define html-section (default-tag-function 'h2))
(define html-subsection (default-tag-function 'h3))
(define html-newthought (default-tag-function 'span #:class "newthought"))
(define html-smallcaps (default-tag-function 'span #:class "smallcaps"))
(define html-center (default-tag-function 'div #:style "text-align: center"))

(define (html-root . elements)
  (define first-pass
    (decode-elements elements
                     #:txexpr-elements-proc decode-hardwrapped-paragraphs
                     #:exclude-tags '(script style figure table pre)))
  (define second-pass
    (decode-elements first-pass
                     #:block-txexpr-proc detect-newthoughts
                     #:inline-txexpr-proc decode-link-urls
                     #:string-proc (compose1 smart-quotes smart-dashes)
                     #:exclude-tags '(script style pre code)))
  `(body ,@second-pass ,(html-footnote-block)))

(define (html-blockcode attrs elems)
  (define file (or (assoc 'filename attrs) ""))
  (define codeblock `(pre [[class "code"]] (code ,@elems)))
  (cond [(string>? file "") `(@ (div [[class "listing-filename"]] 128196 " " ,file) ,codeblock)]
        [else codeblock]))

(define (html-verse attrs elems)
  (let* ([title  (or (assoc 'title attrs) "")]
         [italic? (assoc 'italic attrs)]
         [pre-attrs (cond [italic? '([class "verse"] [style "font-style: italic"])]
                          [else '([class "verse"])])]
         [pre-title (cond [(string>? title "") '(p [[class "verse-heading"]] ,title)]
                          [else ""])])
    `(div [[class "poem"]] (pre ,pre-attrs ,pre-title ,@elems))))
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                                         `(a [[href ,(string-append "#"
                                                                    (fn-id fn-name)
                                                                    (format "~a" (+ 1 fnref-num)))]] "↩"))])
                `(li [[id ,(fndef-id fn-name)]] ,@definition-text ,@backrefs))))
  (cond [(null? note-items) ""]
        [else `(section ((class "footnotes")) (hr) (ol ,@note-items))]))

(define-tag-function (html-note attrs elems)
  (txexpr 'note attrs (decode-paragraphs elems #:force? #t)))








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                                         `(a [[href ,(string-append "#"
                                                                    (fn-id fn-name)
                                                                    (format "~a" (+ 1 fnref-num)))]] "↩"))])
                `(li [[id ,(fndef-id fn-name)]] ,@definition-text ,@backrefs))))
  (cond [(null? note-items) ""]
        [else `(section ((class "footnotes")) (hr) (ol ,@note-items))]))

(define (html-note attrs elems)
  (txexpr 'note attrs (decode-paragraphs elems #:force? #t)))

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