From 6cdea67e798e63c39a4c247e1131bf884c7b137d Mon Sep 17 00:00:00 2001
From: marting <marting>
Date: Tue, 5 Oct 1999 14:27:57 +0000
Subject: [PATCH] dsf

---
 scheme/env/pacman.scm | 328 ------------------------------------------
 1 file changed, 328 deletions(-)
 delete mode 100644 scheme/env/pacman.scm

diff --git a/scheme/env/pacman.scm b/scheme/env/pacman.scm
deleted file mode 100644
index a23cbe2..0000000
--- a/scheme/env/pacman.scm
+++ /dev/null
@@ -1,328 +0,0 @@
-; Copyright (c) 1993-1999 by Richard Kelsey and Jonathan Rees. See file COPYING.
-
-
-; PACkage-manipulation comMANds
-
-(add-sentinel! package-system-sentinel)
-
-
-(define (set-environment-for-commands! p)
-  (set-interaction-environment! p)
-  ;; (set-command-level-env! (command-level) p)
-  )
-
-(define user-environment
-  (user-context-accessor 'user-environment interaction-environment))
-(define set-user-environment!
-  (user-context-modifier 'user-environment))
-
-
-(define-command-syntax 'in "<struct> [<command>]"
-  "go to package, or execute single command in package"
-  '(name &opt command))
-
-(define (in name . maybe-command)
-  (if (and (not (null? maybe-command))
-	   (command-just-evaluates-symbol? (car maybe-command)))
-      (set-focus-object! (environment-ref (really-get-package name)
-					  (cadr (car maybe-command))))
-      (in-package (get-package name) maybe-command)))
-
-(define (command-just-evaluates-symbol? command)
-  (and (pair? command)
-       (eq? (car command) 'run)
-       (symbol? (cadr command))))
-
-(define-command-syntax 'new-package "" "make and enter a new package"
-  '())
-
-(define (new-package)
-  (let ((p (make-simple-package (list (get-structure 'scheme))
-				#t    ;unstable?
-				(get-reflective-tower (user-environment))
-				#f)))
-    (set-package-integrate?! p
-			     (package-integrate? (environment-for-commands)))
-    (set-environment-for-commands! p)))
-
-(define (get-reflective-tower env)    ;Returns promise of (eval . env)
-  (environment-macro-eval (if (package? env)
-			      (package->environment env)
-			      env)))	;Mumble
-
-
-; load-package
-
-(define-command-syntax 'load-package "<struct>" "load package's source code"
-  '(name))
-
-(define (load-package name)
-  (ensure-loaded (get-structure name)))
-
-(define-command-syntax 'reload-package "<struct>" "load package's source code again"
-  '(name))
-
-(define (reload-package name)
-  (let ((s (get-structure name)))
-    (if (not (package-unstable? (structure-package s)))
-	(error "read-only structure" s))
-    (set-package-loaded?! (structure-package s) #f)
-    (ensure-loaded s)))
-
-(define-command-syntax 'structure "<name> <interface>"
-  "create new structure over the current package"
-  '(name expression))
-
-(define (structure name interface-expression)
-  (let* ((c (config-package))
-	 (p (environment-for-commands))
-	 (s (make-structure p
-			    (lambda ()
-			      (eval interface-expression c))
-			    name)))
-    ;; (check-structure s)
-    (environment-define! c name s)))
-
-
-(define-command-syntax 'open "<struct> ..." "open a structure"
-  '(&rest name))
-
-(define (open . names)
-  (for-each (lambda (name)
-	      (let* ((c (config-package))
-		     (thunk (lambda () (environment-ref c name)))
-		     (probe (thunk)))
-		(if (structure? probe)
-		    (if (ensure-loaded-query probe)
-			(package-open! (environment-for-commands) thunk)
-			(error "structure not loaded" name))
-		    (error "not a structure" name))))
-	    names))
-
-(define (ensure-loaded-query struct)
-  (let ((p (structure-package struct)))
-    (cond ((or (package-loaded? p)
-	       (and (null? (package-clauses p))
-		    (every (lambda (struct)
-			     (package-loaded? (structure-package struct)))
-			   (package-opens p))))
-	   #t)
-	  ((or (batch-mode?)
-	       (y-or-n? (if (structure-name struct)
-			    (string-append "Load structure "
-					   (symbol->string
-					    (structure-name struct)))
-			    "Load structure")
-			#f))
-	   (ensure-loaded struct)
-	   #t)
-	  (else #f))))
-
-
-(define-command-syntax 'for-syntax "[<command>]"
-  "go to current package's package for syntax"
-  '(&opt command))
-
-(define (for-syntax . maybe-command)
-  (in-package (cdr (force (get-reflective-tower (environment-for-commands))))
-    maybe-command))
-
-
-; ,user  goes to the user initial environment.
-
-(define-command-syntax 'user "[<command>]" "go to user package"
-  '(&opt command))
-
-(define (user . maybe-command)
-  (in-package (user-environment) maybe-command))
-
-(define-command-syntax 'user-package-is "[<struct>]"
-  "designate user package (for ,user command)"
-  '(&opt name))
-
-(define (user-package-is . name-option)
-  (set-user-environment! (if (null? name-option)
-			     (environment-for-commands)
-			     (get-package (car name-option)))))
-
-(define set-user-environment!
-  (user-context-modifier 'user-environment))
-
-
-; Configuration package  (should there be ,load-config as well?)
-
-(define-command-syntax 'config "[<command>]" "go to configuration package"
-  '(&opt command))
-
-(define (config . maybe-command)
-  (in-package (config-package) maybe-command))
-
-(define-command-syntax 'config-package-is "<struct>"
-  "designate configuration package"
-  '(name))
-
-(define (config-package-is name)
-  (set-config-package! (get-package name)))
-
-
-; ,exec  goes to the exec initial environment.
-
-(define-command-syntax 'exec "[<command>]" "go to command execution package"
-  '(&opt command))
-
-(define (exec . maybe-command)
-  (in-package (user-command-environment) maybe-command))
-
-
-; ,undefine foo  removes definition of foo from current package.
-
-(define-command-syntax 'undefine "<name>" "remove definition"
-  '(name))
-
-(define (undefine name)
-  (package-undefine! (interaction-environment) name))
-
-
-; --------------------
-; Auxiliaries for package commands
-
-(define (in-package p maybe-command)
-  (if (null? maybe-command)
-      (set-environment-for-commands! p)
-      (with-interaction-environment p
-	(lambda ()
-	  (let ((command (car maybe-command)))
-	    (if (procedure? command)
-		(command)
-		(execute-command (car maybe-command))))))))
-
-(define config-package
-  (user-context-accessor 'config-package user-environment))
-
-(define set-config-package!
-  (user-context-modifier 'config-package))
-
-
-(define (get-package name)
-  (let ((p (really-get-package name)))
-    (if (package-unstable? p)
-	p
-	(error "read-only structure" p))))
-
-(define (really-get-package name)
-  (let ((s (get-structure name)))
-    (ensure-loaded-query s)
-    (structure-package s)))
-
-(define (get-structure name)
-  (let ((thing (environment-ref (config-package) name)))
-    (cond ((structure? thing) thing)
-	  (else (error "not a structure" name thing)))))
-
-
-; Main entry point, with package setup.
-
-(define (new-command-processor info commands built-in . meta-structs)
-  ;; Argument to ,build command
-  (lambda (arg)
-    (call-with-values (lambda ()
-			(make-user-envs commands built-in meta-structs))
-      (lambda (env init-thunk)
-	(with-interaction-environment env
-	  (lambda ()
-	    (start-command-processor arg
-				     (lambda ()
-				       (init-thunk)
-				       (greet-user info)))))))))
-
-(define (make-user-envs commands built-in meta-structs)
-  (let* ((tower (make-reflective-tower
-		      eval
-		      (list (*structure-ref built-in 'scheme))
-		      'user))
-	 (user (make-user-package built-in tower))
-	 (config-package (make-config-package 'config
-					      tower
-					      built-in
-					      meta-structs))
-	 (exec-package (make-exec-package commands tower built-in)))
-    (values
-     user
-     (lambda ()
-       (set-user-environment! user)
-       (set-config-package! config-package)
-       (set-user-command-environment! exec-package)))))
-
-; User package
-
-(define (make-user-package built-in tower)
-  (let* ((scheme-structure (*structure-ref built-in 'scheme))
-	 (user
-	  (make-simple-package (list scheme-structure)
-			       #t  ;unstable?
-			       tower
-			       'user)))
-    (set-package-integrate?! user #f)
-    user))
-
-; Configuration package
-
-(define (make-config-package name tower built-in meta-structs)
-  (let* ((module-system (*structure-ref built-in 'module-system))
-	 (config
-	  (make-simple-package (cons module-system
-				     (append meta-structs
-					     (list built-in)))
-			       #t  ;unstable?
-			       tower
-			       name)))
-    (set-reflective-tower-maker!
-         config
-	 (lambda (clauses id)
-	   (if (null? clauses)
-	       tower			;?
-	       (delay (let ((p (eval `(a-package ((for-syntax ,id)) ,@clauses)
-				     config)))
-			(ensure-loaded (make-structure p
-						       (lambda () (make-simple-interface #f '()))
-						       'for-syntax))
-			(cons eval p))))))
-    config))
-
-; Exec package
-
-(define (make-exec-package commands tower built-in)
-  (make-simple-package (list commands (*structure-ref built-in 'scheme))
-		       #t		;unstable?
-		       tower
-		       'exec))
-
-; for prompt string
-
-(define-method &environment-id-string ((env :package))
-  (if (eq? env (user-environment))
-      ""
-      (if (symbol? (package-name env))
-	  (symbol->string (package-name env))
-	  (number->string (package-uid env)))))
-
-(define user-environment
-  (user-context-accessor 'user-environment interaction-environment))
-
-; This is only used by misc/remote.scm, which I don't know if anyone uses.
-;
-; Extract a package-specific evaluator from a package.  Eventually, it
-; would be nice if load, eval-from-file, eval-scanned-forms, and
-; perhaps other things were also generic over different kinds of
-; environments.
-;
-;(define funny-name/evaluator (string->symbol ".evaluator."))
-;
-;(define (set-package-evaluator! p evaluator)
-;  (package-define-funny! p funny-name/evaluator evaluator))
-;
-;(define (package-evaluator p)
-;  (or (get-funny (package->environment p) funny-name/evaluator) eval))
-;
-;(define-method &evaluate (form (env :package))
-;  ((package-evaluator env) form env))