Matthew Butterick 9 years ago
parent b8d050bbe8
commit 060db59a1d

@ -3,34 +3,38 @@
(require (only-in scribble/reader make-at-reader) "../setup.rkt" "project.rkt" racket/function)
(provide (rename-out [reader-module-begin #%module-begin]) (all-from-out "../setup.rkt"))
(define current-reader-mode (make-parameter #f))
(define (path-string->here-path path-string)
(cond
[(symbol? path-string) (symbol->string path-string)]
[(equal? path-string "unsaved editor") path-string]
[else (path->string path-string)]))
(define (infer-parser-mode reader-mode reader-here-path)
(if (eq? reader-mode default-mode-auto)
(let* ([file-ext-pattern (pregexp "\\w+$")]
[here-ext (string->symbol (car (regexp-match file-ext-pattern reader-here-path)))]
[auto-computed-mode (cond
[(eq? here-ext (setup:pagetree-source-ext)) default-mode-pagetree]
[(eq? here-ext (setup:markup-source-ext)) default-mode-markup]
[(eq? here-ext (setup:markdown-source-ext)) default-mode-markdown]
[else default-mode-preproc])])
auto-computed-mode)
reader-mode))
(define (custom-read p)
(syntax->datum (custom-read-syntax (object-name p) p)))
(define (custom-read-syntax path-string p)
(define read-inner (make-at-reader
#:command-char (setup:command-char)
#:syntax? #t
#:inside? #t))
(define source-stx (read-inner path-string p))
(define reader-here-path (cond
[(symbol? path-string) (symbol->string path-string)]
[(equal? path-string "unsaved editor") path-string]
[else (path->string path-string)]))
(define parser-mode (if (eq? (current-reader-mode) default-mode-auto)
(let* ([file-ext-pattern (pregexp "\\w+$")]
[here-ext (string->symbol (car (regexp-match file-ext-pattern reader-here-path)))]
[auto-computed-mode (cond
[(eq? here-ext (setup:pagetree-source-ext)) default-mode-pagetree]
[(eq? here-ext (setup:markup-source-ext)) default-mode-markup]
[(eq? here-ext (setup:markdown-source-ext)) default-mode-markdown]
[else default-mode-preproc])])
auto-computed-mode)
(current-reader-mode)))
(define post-parser-syntax
(define (custom-read-syntax #:reader-mode [reader-mode #f] path-string p)
(define source-stx (let ([read-inner (make-at-reader
#:command-char (setup:command-char)
#:syntax? #t
#:inside? #t)])
(read-inner path-string p)))
(define reader-here-path (path-string->here-path path-string))
(define parser-mode (infer-parser-mode reader-mode reader-here-path))
(define parsed-syntax
(with-syntax ([HERE-KEY (format-id #f "~a" (setup:here-path-key))]
[HERE-PATH (datum->syntax #f reader-here-path)]
[POLLEN-MOD (format-symbol "~a" (gensym))] ; prevents conflicts with other imported Pollen sources
@ -51,7 +55,7 @@
(require (submod pollen/private/runtime-config show) 'POLLEN-MOD)
(provide (all-from-out 'POLLEN-MOD))
(show DOC inner:parser-mode HERE-PATH))))) ; HERE-PATH acts as "local" runtime config
(syntax-property post-parser-syntax
(syntax-property parsed-syntax
'module-language
`#(pollen/private/language-info get-language-info ,reader-here-path))) ; reader-here-path acts as "top" runtime config
@ -81,15 +85,9 @@
(my-make-drracket-buttons my-command-char)])]
[else default]))))
(define-syntax (reader-module-begin stx)
(syntax-case stx ()
[(_ mode expr-to-ignore ...)
(with-syntax ([cr (generate-temporary)]
[crs (generate-temporary)]
[cgi (generate-temporary)])
#'(#%module-begin
(current-reader-mode mode)
(define cgi custom-get-info)
(define cr custom-read)
(define crs custom-read-syntax)
(provide (rename-out [cr read][crs read-syntax][cgi get-info]))))]))
(define-syntax-rule (reader-module-begin mode expr-to-ignore ...)
(#%module-begin
(define cgi custom-get-info) ; stash hygienic references to local funcs with new identifiers
(define cr custom-read)
(define (crs ps p) (custom-read-syntax #:reader-mode mode ps p))
(provide (rename-out [cr read][crs read-syntax][cgi get-info]))))
Loading…
Cancel
Save