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51 lines
2.5 KiB
Racket
51 lines
2.5 KiB
Racket
#lang racket/base
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(require (for-syntax racket/base syntax/strip-context "../setup.rkt" "split-metas.rkt")
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"to-string.rkt" "../pagetree.rkt" "splice.rkt" "../setup.rkt" "../core.rkt"
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(prefix-in doclang: "doclang-raw.rkt"))
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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 (make-parse-proc parser-mode root-proc)
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(define (stringify xs) (apply string-append (map to-string xs)))
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(cond
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[(eq? parser-mode default-mode-pagetree) decode-pagetree]
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[(eq? parser-mode default-mode-markup) (λ (xs) (apply root-proc (remove-voids xs)))]
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[(eq? parser-mode default-mode-markdown)
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(λ (xs) (let* ([xs (stringify xs)]
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[xs ((dynamic-require 'markdown 'parse-markdown) xs)]
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[xs (map strip-empty-attrs xs)])
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(apply root-proc xs)))]
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[else stringify])) ; preprocessor mode
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(define (strip-leading-newlines doc)
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;; drop leading newlines, as they're often the result of `defines` and `requires`
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(or (memf (λ (ln) (and (not (equal? ln (setup:newline)))
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(not (equal? ln "")))) doc) null))
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(define-syntax (pollen-module-begin stx)
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(syntax-case stx ()
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[(_ PARSER-MODE . EXPRS)
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(with-syntax (;; 'parser-mode-from-reader will be #f for an inline submodule
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[EXPRS (replace-context #'here #'EXPRS)]
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[META-HASH (split-metas #'EXPRS (setup:define-meta-name))]
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[METAS-ID (setup:meta-export)]
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[META-MOD-ID (setup:meta-export)]
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[ROOT-ID (setup:main-root-node)]
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[DOC-ID (setup:main-export)])
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#'(doclang:#%module-begin
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DOC-ID ; positional arg for doclang-raw: name of export
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(λ (xs)
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(define proc (make-parse-proc PARSER-MODE ROOT-ID))
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(define doc-elements (splice (strip-leading-newlines xs) (setup:splicing-tag)))
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(proc doc-elements)) ; positional arg for doclang-raw: post-processor
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(module META-MOD-ID racket/base
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(provide METAS-ID)
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(define METAS-ID META-HASH))
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(require pollen/top pollen/core pollen/setup (submod "." META-MOD-ID))
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(provide (all-defined-out) METAS-ID DOC-ID)
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(define prev-metas (current-metas))
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(and (current-metas METAS-ID) "") ; because empty strings get stripped, voids don't
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(begin . EXPRS)
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(and (current-metas prev-metas) "")))])) ; leave behind empty string, not void
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