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41 lines
2.4 KiB
Racket
41 lines
2.4 KiB
Racket
#lang racket/base
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(require (for-syntax racket/base racket/syntax pollen/world) pollen/decode pollen/pagetree racket/list pollen/world markdown)
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(provide (all-defined-out) (all-from-out pollen/world))
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(define-syntax-rule (define+provide-module-begin-in-mode MODE-ARG)
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(begin
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(provide (except-out (all-from-out racket/base) #%module-begin)
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(rename-out [pollen-module-begin #%module-begin]))
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(define-syntax (pollen-module-begin stx)
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(syntax-case stx ()
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[(_ EXPR (... ...))
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(with-syntax ([DOC (datum->syntax stx (world:current-main-export))]
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[INNER (datum->syntax stx ''inner)])
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#'(#%module-begin
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(module inner pollen/doclang-raw ; exports result as doc-raw
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(require pollen/top pollen/world)
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(provide #%top (all-defined-out) (all-from-out pollen/world))
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EXPR (... ...))
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(require INNER 'inner) ; import inner twice: INNER for external use, 'inner for internal
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(define DOC
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(let* ([parser-mode-undefined? (procedure? inner:parser-mode)] ; if undefined, #%top makes it a procedure
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[parser-mode (if parser-mode-undefined?
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MODE-ARG
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inner:parser-mode)]
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[proc (cond
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[(eq? parser-mode world:mode-pagetree) (λ xs (decode-pagetree xs))]
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[(eq? parser-mode world:mode-markup) root] ; if `root` undefined, it becomes a default tag function
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[(eq? parser-mode world:mode-markdown)
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(λ xs (apply root (apply (compose1 parse-markdown string-append)
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(map to-string xs))))]
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[else ; for preprocessor output, just make a string
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(λ xs (apply string-append (map to-string xs)))])]
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[doc-elements (if (list? doc-raw) ; discard all newlines at front of multi-line file
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(dropf doc-raw (λ(ln) (equal? ln "\n")))
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doc-raw)]) ; single line
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(apply proc doc-elements)))
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(provide DOC (except-out (all-from-out INNER) doc-raw #%top))))])))) ; hide internal exports |