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72 lines
4.5 KiB
Racket
72 lines
4.5 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 (define+provide-module-begin-in-mode stx)
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(syntax-case stx ()
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[(_ mode-arg)
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(with-syntax ([new-module-begin (format-id stx "new-module-begin")])
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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 [new-module-begin #%module-begin]))
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(define-syntax (new-module-begin stx-arg)
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(syntax-case stx-arg ()
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[(_ body-exprs (... ...))
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(with-syntax ([local-meta-tag-name (format-id stx-arg (symbol->string (world:get-meta-tag-name)))]
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[local-doc-export-name (format-id stx-arg (symbol->string (world:get-main-export)))]
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[local-metas-export-name (format-id stx-arg (symbol->string (world:get-meta-export)))])
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(syntax-protect
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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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body-exprs (... ...))
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(require 'inner racket/list pollen/metas)
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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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(define doc-with-metas
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`(placeholder-root
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,@(cons `(local-meta-tag-name (here-path ,here-path))
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(if (list? doc-raw)
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(dropf doc-raw (λ(i) (equal? i "\n"))) ; discard all newlines at front of file
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doc-raw))))
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(define-values (doc-without-metas metas) (split-metas-to-hash doc-with-metas)) ; split out the metas
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;; set up the 'doc export
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(require pollen/decode)
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(define doc (apply (cond
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[(equal? parser-mode world:mode-pagetree) (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) (λ xs (apply root (apply (compose1 (dynamic-require 'markdown 'parse-markdown) string-append) (map 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 to-string xs)))]) ; default mode is preprocish
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(cdr doc-without-metas))) ;; cdr strips placeholder-root tag
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;; hide the exports that were only for internal use.
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(provide (rename-out [metas local-metas-export-name])
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(rename-out [doc local-doc-export-name])
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(except-out (all-from-out 'inner) doc-raw #%top)))))]))))]))
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