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authorBryan Newbold <bnewbold@robocracy.org>2017-02-20 00:05:28 -0800
committerBryan Newbold <bnewbold@robocracy.org>2017-02-20 00:05:28 -0800
commit87b82b5822ca54228cfa6df29be3ad9d4bc47d16 (patch)
tree1eb4f87abd38bea56e08335d939e8171d5e7bfc7 /s48-0_57.init
parentbd9733926076885e3417b74de76e4c9c7bc56254 (diff)
downloadslib-87b82b5822ca54228cfa6df29be3ad9d4bc47d16.tar.gz
slib-87b82b5822ca54228cfa6df29be3ad9d4bc47d16.zip
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+;;;"scheme48.init" Initialisation for SLIB for Scheme48-0.57 -*-scheme-*-
+;;; Author: Aubrey Jaffer
+;;;
+;;; This code is in the public domain.
+
+,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
+ posix c-system-function)
+ (begin
+ (define s48-getenv lookup-environment-variable)
+ (define s48-system system)
+ (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.
+
+(define (software-type) 'UNIX)
+
+;;; (scheme-implementation-type) should return the name of the scheme
+;;; implementation loading this file.
+
+(define (scheme-implementation-type) 'Scheme48)
+
+;;; (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://s48.org/")
+
+;;; (scheme-implementation-version) should return a string describing
+;;; the version of the scheme implementation loading this file.
+
+(define scheme-implementation-version
+ (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.
+
+(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.
+
+(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
+;;; customize a computer environment for a user.
+
+(define home-vicinity
+ (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.
+
+(define *features*
+ '(
+ source ;can load scheme source files
+ ;(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
+
+; 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
+
+ ;; 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
+ system ;posix (system <string>)
+ getenv ;posix (getenv <string>)
+; program-arguments ;returns list of strings (argv)
+; current-time ;returns time in seconds since 1/1/1970
+ ;; Implementation Specific features
+ ))
+
+;;; (OUTPUT-PORT-WIDTH <port>)
+(define (output-port-width . arg) 79)
+
+;;; (OUTPUT-PORT-HEIGHT <port>)
+(define (output-port-height . arg) 24)
+
+;;; (CURRENT-ERROR-PORT)
+(define current-error-port s48-current-error-port)
+
+;;; (TMPNAM) makes a temporary file name.
+(define tmpnam
+ (let ((cntr 100))
+ (lambda () (set! cntr (+ 1 cntr))
+ (let ((tmp (string-append "slib_" (number->string cntr))))
+ (if (file-exists? tmp) (tmpnam) tmp)))))
+
+;;; (FILE-EXISTS? <string>)
+(define (file-exists? f)
+ (call-with-current-continuation
+ (lambda (k)
+ (s48-with-handler
+ (lambda (condition decline)
+ (k #f))
+ (lambda ()
+ (close-input-port (open-input-file f))
+ #t)))))
+
+;;; (DELETE-FILE <string>)
+(define (delete-file file-name)
+ (system (string-append "rm " file-name)))
+
+;;; FORCE-OUTPUT flushes any pending output on optional arg output port
+;;; use this definition if your system doesn't have such a procedure.
+(define (force-output . arg)
+ (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)
+(define char->integer
+ (let ((char->integer char->integer)
+ (code0 (char->integer (integer->char 0))))
+ (lambda (char) (- (char->integer char) code0))))
+(define char-code-limit 256)
+
+;;; Workaround MODULO bug
+(define modulo
+ (let ((modulo modulo))
+ (lambda (n1 n2)
+ (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)
+
+;;; Return argument
+(define (identity x) x)
+
+;;; SLIB:EVAL is single argument eval using the top-level (user) environment.
+(define slib:eval
+ (let ((eval eval)
+ (interaction-environment interaction-environment))
+ (lambda (form)
+ (eval form (interaction-environment)))))
+
+;;; If your implementation provides R4RS macros:
+(define macro:eval slib:eval)
+(define (macro:load <pathname>)
+ (if (not (file-exists? <pathname>))
+ (set! <pathname> (string-append <pathname> (scheme-file-suffix))))
+ (load <pathname>))
+
+(define *defmacros*
+ (list (cons 'defmacro
+ (lambda (name parms . body)
+ `(set! *defmacros* (cons (cons ',name (lambda ,parms ,@body))
+ *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)))
+ 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)))
+ e))
+
+(define gentemp
+ (let ((*gensym-counter* -1))
+ (lambda ()
+ (set! *gensym-counter* (+ *gensym-counter* 1))
+ (string->symbol
+ (string-append "slib:G" (number->string *gensym-counter*))))))
+
+(define base:eval slib:eval)
+(define (defmacro:eval x) (base:eval (defmacro:expand* x)))
+
+(define defmacro:load macro:load)
+
+(define (slib:eval-load <pathname> evl)
+ (if (not (file-exists? <pathname>))
+ (set! <pathname> (string-append <pathname> (scheme-file-suffix))))
+ (call-with-input-file <pathname>
+ (lambda (port)
+ (let ((old-load-pathname *load-pathname*))
+ (set! *load-pathname* <pathname>)
+ (do ((o (read port) (read port)))
+ ((eof-object? o))
+ (evl o))
+ (set! *load-pathname* old-load-pathname)))))
+
+(define slib:warn
+ (lambda 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 . 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))
+(define slib:form-feed (s48-ascii->char 12))
+
+;;; Support for older versions of Scheme. Not enough code for its own file.
+(define (last-pair l) (if (pair? (cdr l)) (last-pair (cdr l)) l))
+(define t #t)
+(define nil #f)
+
+;;; Define these if your implementation's syntax can support them and if
+;;; they are not already defined.
+
+(define (1+ n) (+ n 1))
+(define (-1+ n) (+ n -1))
+;(define 1- -1+)
+
+(define in-vicinity string-append)
+
+;;; Define SLIB:EXIT to be the implementation procedure to exit or
+;;; return if exitting not supported.
+(define slib:exit (lambda args #f))
+
+;;; Here for backward compatability
+(define scheme-file-suffix
+ (case (software-type)
+ ((NOSVE) (lambda () "_scm"))
+ (else (lambda () ".scm"))))
+
+;;; (SLIB:LOAD-SOURCE "foo") should load "foo.scm" or with whatever
+;;; suffix all the module files in SLIB have. See feature 'SOURCE.
+
+(define (slib:load-source f) (load (string-append f (scheme-file-suffix))))
+
+;;; (SLIB:LOAD-COMPILED "foo") should load the file that was produced
+;;; by compiling "foo.scm" if this implementation can compile files.
+;;; See feature 'COMPILED.
+
+(define slib:load-compiled load)
+
+;;; At this point SLIB:LOAD must be able to load SLIB files.
+
+(define slib:load slib:load-source)
+
+;;; Scheme48 complains that these are not defined (even though they
+;;; won't be called until they are).
+(define synclo:load #f)
+(define syncase:load #f)
+(define macwork:load #f)
+(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