(or (fluid-ref %stacks) '()))))
(thunk)))
(lambda (k . args)
- (%start-stack tag (lambda () (apply k args)))))))
+ (%start-stack tag (lambda () (apply k args)))))))
(define-syntax start-stack
(syntax-rules ()
((_ tag exp)
(lambda ()
(let* ((scmstat (stat name))
(gostat (stat go-path #f)))
- (if (and gostat (= (stat:mtime gostat) (stat:mtime scmstat)))
+ (if (and gostat (>= (stat:mtime gostat) (stat:mtime scmstat)))
go-path
(begin
(if gostat
;; Create a new module, perhaps with a particular size of obarray,
;; initial uses list, or binding procedure.
;;
-(define make-module
- (lambda args
+(define* (make-module #:optional (size 31) (uses '()) (binder #f))
+ (define %default-import-size
+ ;; Typical number of imported bindings actually used by a module.
+ 600)
+
+ (if (not (integer? size))
+ (error "Illegal size to make-module." size))
+ (if (not (and (list? uses)
+ (and-map module? uses)))
+ (error "Incorrect use list." uses))
+ (if (and binder (not (procedure? binder)))
+ (error
+ "Lazy-binder expected to be a procedure or #f." binder))
+
+ (let ((module (module-constructor (make-hash-table size)
+ uses binder #f macroexpand
+ #f #f #f
+ (make-hash-table %default-import-size)
+ '()
+ (make-weak-key-hash-table 31) #f
+ (make-hash-table 7) #f #f #f)))
+
+ ;; We can't pass this as an argument to module-constructor,
+ ;; because we need it to close over a pointer to the module
+ ;; itself.
+ (set-module-eval-closure! module (standard-eval-closure module))
- (define (parse-arg index default)
- (if (> (length args) index)
- (list-ref args index)
- default))
-
- (define %default-import-size
- ;; Typical number of imported bindings actually used by a module.
- 600)
-
- (if (> (length args) 3)
- (error "Too many args to make-module." args))
-
- (let ((size (parse-arg 0 31))
- (uses (parse-arg 1 '()))
- (binder (parse-arg 2 #f)))
-
- (if (not (integer? size))
- (error "Illegal size to make-module." size))
- (if (not (and (list? uses)
- (and-map module? uses)))
- (error "Incorrect use list." uses))
- (if (and binder (not (procedure? binder)))
- (error
- "Lazy-binder expected to be a procedure or #f." binder))
-
- (let ((module (module-constructor (make-hash-table size)
- uses binder #f macroexpand
- #f #f #f
- (make-hash-table %default-import-size)
- '()
- (make-weak-key-hash-table 31) #f
- (make-hash-table 7) #f #f #f)))
-
- ;; We can't pass this as an argument to module-constructor,
- ;; because we need it to close over a pointer to the module
- ;; itself.
- (set-module-eval-closure! module (standard-eval-closure module))
-
- module))))
+ module))
\f
;;; {Running Repls}
;;;
-(define *repl-level* (make-fluid))
+(define *repl-stack* (make-fluid))
;; Programs can call `batch-mode?' to see if they are running as part of a
;; script or if they are running interactively. REPL implementations ensure that
;; `batch-mode?' returns #f during their extent.
;;
(define (batch-mode?)
- (negative? (or (fluid-ref *repl-level*) -1)))
+ (null? (or (fluid-ref *repl-stack*) '())))
;; Programs can re-enter batch mode, for example after a fork, by calling
;; `ensure-batch-mode!'. It's not a great interface, though; it would be better
;; to abort to the outermost prompt, and call a thunk there.
;;
(define (ensure-batch-mode!)
- (fluid-set! *repl-level* #f))
+ (set! batch-mode? (lambda () #t)))
(define (quit . args)
(apply throw 'quit args))
(define before-print-hook (make-hook 1))
(define after-print-hook (make-hook 1))
+;;; This hook is run at the very end of an interactive session.
+;;;
+(define exit-hook (make-hook))
+
;;; The default repl-reader function. We may override this if we've
;;; the readline library.
(define repl-reader
;;; {Parameters}
;;;
-(define make-mutable-parameter
- (let ((make (lambda (fluid converter)
- (lambda args
- (if (null? args)
- (fluid-ref fluid)
- (fluid-set! fluid (converter (car args))))))))
- (lambda* (init #:optional (converter identity))
- (let ((fluid (make-fluid)))
- (fluid-set! fluid (converter init))
- (make fluid converter)))))
+(define* (make-mutable-parameter init #:optional (converter identity))
+ (let ((fluid (make-fluid)))
+ (fluid-set! fluid (converter init))
+ (case-lambda
+ (() (fluid-ref fluid))
+ ((val) (fluid-set! fluid (converter val))))))
+
\f
(lambda () (fluid-ref using-readline?))
(lambda (v) (fluid-set! using-readline? v)))))
-(define (top-repl)
- (let ((guile-user-module (resolve-module '(guile-user))))
-
- ;; Use some convenient modules (in reverse order)
-
- (set-current-module guile-user-module)
- (process-use-modules
- (append
- '(((ice-9 r5rs))
- ((ice-9 session))
- ((ice-9 debug)))
- (if (provided? 'regex)
- '(((ice-9 regex)))
- '())
- (if (provided? 'threads)
- '(((ice-9 threads)))
- '())))
- ;; load debugger on demand
- (module-autoload! guile-user-module '(system vm debug) '(debug))
-
- ;; Note: SIGFPE, SIGSEGV and SIGBUS are actually "query-only" (see
- ;; scmsigs.c scm_sigaction_for_thread), so the handlers setup here have
- ;; no effect.
- (let ((old-handlers #f)
- ;; We can't use @ here, as modules have been booted, but in Guile's
- ;; build the srfi-1 helper lib hasn't been built yet, which will
- ;; result in an error when (system repl repl) is loaded at compile
- ;; time (to see if it is a macro or not).
- (start-repl (module-ref (resolve-module '(system repl repl))
- 'start-repl))
- (signals (if (provided? 'posix)
- `((,SIGINT . "User interrupt")
- (,SIGFPE . "Arithmetic error")
- (,SIGSEGV
- . "Bad memory access (Segmentation violation)"))
- '())))
- ;; no SIGBUS on mingw
- (if (defined? 'SIGBUS)
- (set! signals (acons SIGBUS "Bad memory access (bus error)"
- signals)))
-
- (dynamic-wind
-
- ;; call at entry
- (lambda ()
- (let ((make-handler (lambda (msg)
- (lambda (sig)
- (scm-error 'signal
- #f
- msg
- #f
- (list sig))))))
- (set! old-handlers
- (map (lambda (sig-msg)
- (sigaction (car sig-msg)
- (make-handler (cdr sig-msg))))
- signals))))
-
- ;; the protected thunk.
- (lambda ()
- (let ((status (start-repl 'scheme)))
- (run-hook exit-hook)
- status))
-
- ;; call at exit.
- (lambda ()
- (map (lambda (sig-msg old-handler)
- (if (not (car old-handler))
- ;; restore original C handler.
- (sigaction (car sig-msg) #f)
- ;; restore Scheme handler, SIG_IGN or SIG_DFL.
- (sigaction (car sig-msg)
- (car old-handler)
- (cdr old-handler))))
- signals old-handlers))))))
-
-;;; This hook is run at the very end of an interactive session.
-;;;
-(define exit-hook (make-hook))
-
\f
;;; {Deprecated stuff}
HCoop / bpt / guile.git / blobdiff