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67 lines
3.9 KiB
Racket
67 lines
3.9 KiB
Racket
#lang racket/base
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(require (for-syntax racket/base racket/syntax pollen/world) pollen/world)
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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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[METAS (datum->syntax stx (world:current-meta-export))]
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[META (datum->syntax stx (world:current-meta-tag-name))]
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[INNER (datum->syntax stx ''inner)])
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#'(#%module-begin
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(module inner pollen/doclang-raw
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;; doclang_raw is a version of scribble/doclang with the decoder disabled
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;; first three lines are positional arguments for doclang-raw
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doc-raw ; id of export
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(λ(x) x) ; post-process function
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() ; prepended exprs
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;; Change behavior of undefined identifiers with #%top
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;; Get project values from world
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(require pollen/top pollen/world)
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(provide (all-defined-out) (all-from-out pollen/top pollen/world))
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EXPR (... ...))
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(require INNER 'inner pollen/metas) ; import inner twice: INNER for external use, 'inner for internal
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;; in an inline module, reader-here-path and parser-mode are undefined
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;; (because there's no reader)
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;; but they'll become tag functions courtesy of #%top
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;; so that's how we can detect if they are undefined
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(define here-path (if (procedure? inner:reader-here-path)
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"anonymous-module"
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inner:reader-here-path))
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(define parser-mode (if (procedure? inner:parser-mode)
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MODE-ARG
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inner:parser-mode))
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;; set up the DOC export
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(define doc-elements (if (list? doc-raw) ; discard all newlines at front of file
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((dynamic-require 'racket/list 'dropf) doc-raw (λ(i) (equal? i "\n")))
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doc-raw)) ; single line
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(define doc-with-metas (list* 'placeholder-root `(META (here-path ,here-path)) doc-elements))
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(define-values (doc-without-metas METAS) (split-metas-to-hash doc-with-metas))
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(define DOC
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(let ([proc (cond
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[(equal? parser-mode world:mode-pagetree)
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(λ xs ((dynamic-require 'pollen/pagetree 'decode-pagetree) xs))]
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;; 'root is the hook for the decoder function.
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;; If it's not a defined identifier, it just hits #%top and becomes `(root ,@body ...)
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[(equal? parser-mode world:mode-markup) root]
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[(equal? parser-mode world:mode-markdown)
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(λ xs (apply root (apply (compose1 (dynamic-require 'markdown 'parse-markdown) string-append)
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(map (dynamic-require 'pollen/decode 'to-string) xs))))]
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;; for preprocessor output, just make a string.
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[else (λ xs (apply string-append (map (dynamic-require 'pollen/decode 'to-string) xs)))])]
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[doc-elements-without-metas (cdr doc-without-metas)])
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(apply proc doc-elements-without-metas)))
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;; hide the exports that were only for internal use.
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(provide DOC METAS (except-out (all-from-out INNER) doc-raw #%top))))]))))
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