diff options
Diffstat (limited to 'scheme48.init')
| -rw-r--r-- | scheme48.init | 216 |
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scheme-implementation-version - (cond ((= -86400 (modulo -2177452800 -86400)) - (display "scheme48-0.36 has been superseded by") - (newline) - (display "http://swissnet.ai.mit.edu/ftpdir/s48/scheme48-0.46.tgz") - (newline) - (lambda () "0.36")) - (else (lambda () "0.46")))) + (let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 |