syndicate-2017/racket/syndicate/core-lang.rkt

95 lines
3.7 KiB
Racket

#lang racket/base
(require (for-syntax racket/base syntax/kerncase))
(require racket/match)
(require "main.rkt")
(require (submod "actor.rkt" for-module-begin))
(require "store.rkt")
(provide (rename-out [module-begin #%module-begin])
activate
require/activate
current-ground-dataspace
begin-for-declarations
(except-out (all-from-out racket/base) #%module-begin sleep)
(all-from-out racket/match)
(all-from-out "main.rkt")
(for-syntax (all-from-out racket/base)))
(define-syntax (activate stx)
(syntax-case stx ()
[(_ module-path ...)
#'(begin
(let ()
(local-require (submod module-path syndicate-main))
(activate!))
...)]))
(define-syntax (require/activate stx)
(syntax-case stx ()
[(_ module-path ...)
#'(begin
(require module-path ...)
(activate module-path ...))]))
(define-syntax-rule (begin-for-declarations decl ...)
(begin decl ...))
(define current-ground-dataspace (make-parameter #f))
(define-syntax (module-begin stx)
(unless (eq? (syntax-local-context) 'module-begin)
(raise-syntax-error #f "allowed only around a module body" stx))
(syntax-case stx ()
[(_ forms ...)
(let ()
(define (accumulate-actions action-ids final-forms forms)
(if (null? forms)
(let ((final-stx
#`(#%module-begin (module+ syndicate-main
(provide boot-actions activate!)
(define activated? #f)
(define boot-actions (list #,@(reverse action-ids)))
(define (activate!)
(when (not activated?)
(set! activated? #t)
boot-actions)))
(module+ main
(current-ground-dataspace run-ground))
#,@(reverse final-forms)
(module+ main
(require (submod ".." syndicate-main))
((current-ground-dataspace) (activate!))))))
;;(pretty-print (syntax->datum final-stx))
final-stx)
(syntax-case (local-expand (car forms)
'module
(append (list #'module+
#'begin-for-declarations)
(kernel-form-identifier-list))) ()
[(head rest ...)
(if (free-identifier=? #'head #'begin)
(accumulate-actions action-ids
final-forms
(append (syntax->list #'(rest ...)) (cdr forms)))
(if (ormap (lambda (i) (free-identifier=? #'head i))
(syntax->list #'(define-values define-syntaxes begin-for-syntax
module module* module+
#%module-begin
#%require #%provide
begin-for-declarations)))
(accumulate-actions action-ids
(cons (car forms) final-forms)
(cdr forms))
(accumulate-action (car forms) action-ids final-forms (cdr forms))))]
[non-pair-syntax
(accumulate-action (car forms) action-ids final-forms (cdr forms))])))
(define (accumulate-action action action-ids final-forms remaining-forms)
(define temp (car (generate-temporaries (list action))))
(accumulate-actions (cons temp action-ids)
(cons #`(define #,temp (capture-actor-actions (lambda () #,action)))
final-forms)
remaining-forms))
(accumulate-actions '() '() (syntax->list #'(forms ...))))]))