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-rw-r--r--scheme48.init216
1 files changed, 166 insertions, 50 deletions
diff --git a/scheme48.init b/scheme48.init
index 8258d97..75ab0f5 100644
--- a/scheme48.init
+++ b/scheme48.init
@@ -3,10 +3,38 @@
;;;
;;; This code is in the public domain.
-;;; If you know the magic incantation to make a "," command available
-;;; as a scheme procedure, you can make a nifty slib function to do
-;;; this (like `slib:dump' in "vscm.init"). But for now, type:
-;;; make slib48
+,batch on
+,load-package floatnums
+,config
+,load =scheme48/misc/packages.scm
+(define-structure slib-primitives
+ (export s48-getenv
+ s48-system
+ s48-current-error-port
+ s48-force-output
+ s48-with-handler
+ s48-ascii->char
+ s48-error)
+ (open scheme signals ascii extended-ports i/o primitives handle
+ unix-getenv ;Comment out for versions >= 0.54
+;;; posix ;Comment out for versions < 0.54
+ )
+ (begin
+ (define s48-getenv
+ getenv ;Comment out for versions >= 0.54
+;;; lookup-environment-variable ;Comment out for versions < 0.54
+ )
+ (define s48-system (lambda (c) (vm-extension 96 c)))
+ (define s48-current-error-port current-error-port)
+ (define s48-force-output force-output)
+ (define s48-with-handler with-handler)
+ (define s48-ascii->char ascii->char)
+ (define s48-error error)))
+,user
+,open slib-primitives
+
+(define getenv s48-getenv)
+(define system s48-system)
;;; (software-type) should be set to the generic operating system type.
;;; UNIX, VMS, MACOS, AMIGA and MS-DOS are supported.
@@ -18,38 +46,33 @@
(define (scheme-implementation-type) 'Scheme48)
-;;; (scheme-implementation-home-page) should return a (string) URL
-;;; (Uniform Resource Locator) for this scheme implementation's home
+;;; (scheme-implementation-home-page) should return a (string) URI
+;;; (Uniform Resource Identifier) for this scheme implementation's home
;;; page; or false if there isn't one.
-(define (scheme-implementation-home-page)
- "http://www.neci.nj.nec.com/homepages/kelsey.html")
+(define (scheme-implementation-home-page) "http://s48.org/")
;;; (scheme-implementation-version) should return a string describing
;;; the version of the scheme implementation loading this file.
(define scheme-implementation-version
- (cond ((= -86400 (modulo -2177452800 -86400))
- (display "scheme48-0.36 has been superseded by")
- (newline)
- (display "http://swissnet.ai.mit.edu/ftpdir/s48/scheme48-0.46.tgz")
- (newline)
- (lambda () "0.36"))
- (else (lambda () "0.46"))))
+ (let ((version (getenv "S48_VERSION")))
+ (lambda () version)))
;;; (implementation-vicinity) should be defined to be the pathname of
;;; the directory where any auxiliary files to your Scheme
;;; implementation reside.
-;;; [ defined from the Makefile ]
+(define implementation-vicinity
+ (let ((vic (getenv "S48_VICINITY")))
+ (lambda () vic)))
;;; (library-vicinity) should be defined to be the pathname of the
;;; directory where files of Scheme library functions reside.
-;;; [ defined from the Makefile ]
-
-(define getenv s48-getenv)
-(define system s48-system)
+(define library-vicinity
+ (let ((vic (getenv "SCHEME_LIBRARY_PATH")))
+ (lambda () vic)))
;;; (home-vicinity) should return the vicinity of the user's HOME
;;; directory, the directory which typically contains files which
@@ -59,6 +82,12 @@
(let ((home-path (getenv "HOME")))
(lambda () home-path)))
+(let* ((siv (scheme-implementation-version))
+ (num-ver (and siv (string->number siv))))
+ (cond ((not num-ver))
+ ((>= num-ver 0.54)
+ (set! system #f))))
+
;;; *FEATURES* should be set to a list of symbols describing features
;;; of this implementation. See Template.scm for the list of feature
;;; names.
@@ -69,24 +98,71 @@
;(slib:load-source "filename")
; compiled ;can load compiled files
;(slib:load-compiled "filename")
+
+ ;; Scheme report features
+
+ rev5-report ;conforms to
+ eval ;R5RS two-argument eval
+ values ;R5RS multiple values
+ dynamic-wind ;R5RS dynamic-wind
+ macro ;R5RS high level macros
+ delay ;has DELAY and FORCE
+ multiarg-apply ;APPLY can take more than 2 args.
+ char-ready?
+ rationalize
+ rev4-optional-procedures ;LIST-TAIL, STRING->LIST,
+ ;LIST->STRING, STRING-COPY,
+ ;STRING-FILL!, LIST->VECTOR,
+ ;VECTOR->LIST, and VECTOR-FILL!
+
rev4-report ;conforms to
+
ieee-p1178 ;conforms to
- rev4-optional-procedures
- multiarg/and-
- multiarg-apply
- rationalize
- delay ;has delay and force
- with-file
- char-ready? ;has
- eval ;proposed 2-argument eval
- values ;proposed multiple values
- dynamic-wind ;proposed dynamic-wind
+
+; rev3-report ;conforms to
+
+; rev2-procedures ;SUBSTRING-MOVE-LEFT!,
+ ;SUBSTRING-MOVE-RIGHT!,
+ ;SUBSTRING-FILL!,
+ ;STRING-NULL?, APPEND!, 1+,
+ ;-1+, <?, <=?, =?, >?, >=?
+; object-hash ;has OBJECT-HASH
+
+; multiarg/and- ;/ and - can take more than 2 args.
+ with-file ;has WITH-INPUT-FROM-FILE and
+ ;WITH-OUTPUT-FROM-FILE
+; transcript ;TRANSCRIPT-ON and TRANSCRIPT-OFF
+; ieee-floating-point ;conforms to IEEE Standard 754-1985
+ ;IEEE Standard for Binary
+ ;Floating-Point Arithmetic.
full-continuation ;can return multiple times
- macro ;R4RS appendix's DEFINE-SYNTAX
- system ;posix (system <string>)
+
+ ;; Other common features
+
+; srfi ;srfi-0, COND-EXPAND finds all srfi-*
+; sicp ;runs code from Structure and
+ ;Interpretation of Computer
+ ;Programs by Abelson and Sussman.
+ defmacro ;has Common Lisp DEFMACRO
+; record ;has user defined data structures
+; string-port ;has CALL-WITH-INPUT-STRING and
+ ;CALL-WITH-OUTPUT-STRING
+; sort
+; pretty-print
+; object->string
+; format ;Common-lisp output formatting
+; trace ;has macros: TRACE and UNTRACE
+; compiler ;has (COMPILER)
+; ed ;(ED) is editor
getenv ;posix (getenv <string>)
+; program-arguments ;returns list of strings (argv)
+; current-time ;returns time in seconds since 1/1/1970
+ ;; Implementation Specific features
))
+(if system ;posix (system <string>)
+ (set! *features* (cons 'system *features*)))
+
;;; (OUTPUT-PORT-WIDTH <port>)
(define (output-port-width . arg) 79)
@@ -124,6 +200,13 @@
(s48-force-output
(if (null? arg) (current-output-port) (car arg))))
+;;; "rationalize" adjunct procedures.
+(define (find-ratio x e)
+ (let ((rat (rationalize x e)))
+ (list (numerator rat) (denominator rat))))
+(define (find-ratio-between x y)
+ (find-ratio (/ (+ x y) 2) (/ (- x y) 2)))
+
;;; CHAR-CODE-LIMIT is one greater than the largest integer which can
;;; be returned by CHAR->INTEGER.
(define integer->char s48-ascii->char)
@@ -140,6 +223,11 @@
(let ((ans (modulo n1 n2)))
(if (= ans n2) (- ans ans) ans)))))
+;;; Workaround atan bug
+(define two-arg:atan atan)
+(define (atan y . x)
+ (if (null? x) (two-arg:atan y 1) (two-arg:atan y (car x))))
+
;;; MOST-POSITIVE-FIXNUM is used in modular.scm
(define most-positive-fixnum #x1FFFFFFF)
@@ -164,22 +252,24 @@
(list (cons 'defmacro
(lambda (name parms . body)
`(set! *defmacros* (cons (cons ',name (lambda ,parms ,@body))
- *defmacros*))))))
+ *defmacros*))))))
(define (defmacro? m) (and (assq m *defmacros*) #t))
(define (macroexpand-1 e)
- (if (pair? e) (let ((a (car e)))
- (cond ((symbol? a) (set! a (assq a *defmacros*))
- (if a (apply (cdr a) (cdr e)) e))
- (else e)))
+ (if (pair? e)
+ (let ((a (car e)))
+ (cond ((symbol? a) (set! a (assq a *defmacros*))
+ (if a (apply (cdr a) (cdr e)) e))
+ (else e)))
e))
(define (macroexpand e)
- (if (pair? e) (let ((a (car e)))
- (cond ((symbol? a)
- (set! a (assq a *defmacros*))
- (if a (macroexpand (apply (cdr a) (cdr e))) e))
- (else e)))
+ (if (pair? e)
+ (let ((a (car e)))
+ (cond ((symbol? a)
+ (set! a (assq a *defmacros*))
+ (if a (macroexpand (apply (cdr a) (cdr e))) e))
+ (else e)))
e))
(define gentemp
@@ -191,11 +281,8 @@
(define base:eval slib:eval)
(define (defmacro:eval x) (base:eval (defmacro:expand* x)))
-(define (defmacro:expand* x)
- (require 'defmacroexpand) (apply defmacro:expand* x '()))
-(define (defmacro:load <pathname>)
- (slib:eval-load <pathname> defmacro:eval))
+(define defmacro:load macro:load)
(define (slib:eval-load <pathname> evl)
(if (not (file-exists? <pathname>))
@@ -211,12 +298,15 @@
(define slib:warn
(lambda args
- (let ((port (current-error-port)))
- (display "Warn: " port)
- (for-each (lambda (x) (display x port)) args))))
+ (let ((cep (current-error-port)))
+ (if (provided? 'trace) (print-call-stack cep))
+ (display "Warn: " cep)
+ (for-each (lambda (x) (display x cep)) args))))
;;; define an error procedure for the library
-(define slib:error s48-error)
+(define (slib:error . args)
+ (if (provided? 'trace) (print-call-stack (current-error-port)))
+ (apply s48-error args))
;;; define these as appropriate for your system.
(define slib:tab (s48-ascii->char 9))
@@ -269,4 +359,30 @@
(define transcript-on #f)
(define transcript-off #f)
+;;; Jacques Mequin wins the Spring 2001 SLIB extreme cleverness award:
+(define-syntax defmacro
+ (lambda (e r c)
+ (let* ((e-fields (cdr e))
+ (macro-name (car e-fields))
+ (macro-args (cdr e-fields))
+ (slib-store (eval 'defmacro:eval (interaction-environment))))
+ (slib-store `(defmacro ,macro-name ,@macro-args)))
+ `(define-syntax ,(cadr e)
+ (lambda (em rm cm)
+ (let ((macro-name ',(cadr e))
+ (macro-args (cdr em))
+ (slib-eval (eval 'macroexpand-1 (interaction-environment))))
+ (slib-eval `(,macro-name ,@macro-args)))))))
+
(slib:load (in-vicinity (library-vicinity) "require"))
+
+;;; Needed to support defmacro
+(require 'defmacroexpand)
+(define *args* '())
+(define (program-arguments) (cons "scheme48" *args*))
+(set! *catalog* #f)
+
+,collect
+,batch off
+,dump slib.image "(slib 2d2)"
+,exit