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65 lines
2.8 KiB
Racket
65 lines
2.8 KiB
Racket
#lang racket/base
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(require (for-syntax racket/base
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syntax/strip-context
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"../setup.rkt"
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"split-metas.rkt")
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racket/match
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racket/list
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"to-string.rkt"
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"../pagetree.rkt"
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"splice.rkt"
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"../core.rkt"
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"../setup.rkt"
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(prefix-in doclang: "external/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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(all-from-out "../core.rkt" "../setup.rkt"))
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(define ((make-parse-proc parser-mode root-proc) xs)
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(define (stringify xs) (apply string-append (map to-string xs)))
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(match parser-mode
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[(== default-mode-pagetree) (decode-pagetree xs)]
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[(== default-mode-markup) (apply root-proc (remove-voids xs))]
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[(== default-mode-markdown)
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(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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[_ (stringify xs)])) ; 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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(if (setup:trim-whitespace?)
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(dropf doc (λ (ln) (member ln (list (setup:newline) ""))))
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doc))
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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 ([META-HASH (split-metas #'EXPRS (setup:define-meta-name))]
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[METAS-ID-HERE (setup:meta-export)]
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[METAS-ID (datum->syntax #'EXPRS (setup:meta-export))]
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[META-MOD-ID (setup:meta-export)]
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[ROOT-ID (datum->syntax #'EXPRS (setup:main-root-node))]
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[CURRENT-METAS (datum->syntax #'EXPRS 'current-metas)]
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[POLLEN/TOP (datum->syntax #'EXPRS 'pollen/top)]
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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 trimmed-xs (strip-leading-newlines xs))
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(define doc-elements (splice trimmed-xs (setup:splicing-tag)))
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(parameterize ([CURRENT-METAS METAS-ID])
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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 (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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(define METAS-ID METAS-ID-HERE)
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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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