diff options
Diffstat (limited to 'scheme48.init')
| -rw-r--r-- | scheme48.init | 316 |
1 files changed, 187 insertions, 129 deletions
diff --git a/scheme48.init b/scheme48.init index 0640120..8f91d54 100644 --- a/scheme48.init +++ b/scheme48.init @@ -8,28 +8,42 @@ ,config ,load =scheme48/misc/packages.scm (define-structure slib-primitives - (export s48-getenv + (export s48-modulo s48-atan s48-char->integer + s48-getenv s48-current-time s48-time-seconds 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))) + s48-error s48-warn + s48-make-string-input-port + s48-make-string-output-port + s48-string-output-port-output + s48-exit) + (open (modify scheme + (rename (modulo s48-modulo) (atan s48-atan) + (char->integer s48-char->integer))) + ; primitives + (modify posix + (rename (current-time s48-current-time) + (time-seconds s48-time-seconds) + (lookup-environment-variable s48-getenv))) + (modify c-system-function (rename (system s48-system))) + (modify i/o + (rename (current-error-port s48-current-error-port) + (force-output s48-force-output))) + (modify handle (rename (with-handler s48-with-handler))) + (modify ascii (rename (ascii->char s48-ascii->char))) + (modify signals (rename (error s48-error) (warn s48-warn))) + (modify root-scheduler (rename (scheme-exit-now s48-exit))) + (modify extended-ports + (rename (make-string-input-port + s48-make-string-input-port) + (make-string-output-port + s48-make-string-output-port) + (string-output-port-output + s48-string-output-port-output)))) + (begin #t)) ,user ,open slib-primitives @@ -71,33 +85,98 @@ ;;; (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. +;;; +;;; Ivan Shmakov points out that evaluating (getenv "HOME") when +;;; compiling captures the installer's home directory. So delay until +;;; HOME-VICINITY is called. (define (home-vicinity) (let ((home (getenv "HOME"))) (and home + (if (eqv? #\/ (string-ref home (+ -1 (string-length home)))) + home + (string-append home "/"))))) +;@ +(define in-vicinity string-append) +;@ +(define (user-vicinity) + (case (software-type) + ((VMS) "[.]") + (else ""))) + +(define *load-pathname* #f) +;@ +(define vicinity:suffix? + (let ((suffi (case (software-type) - ((UNIX COHERENT MS-DOS) ;V7 unix has a / on HOME - (if (eqv? #\/ (string-ref home (+ -1 (string-length home)))) - home - (string-append home "/"))) - (else home))))) - -(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. + ((AMIGA) '(#\: #\/)) + ((MACOS THINKC) '(#\:)) + ((MS-DOS WINDOWS ATARIST OS/2) '(#\\ #\/)) + ((NOSVE) '(#\: #\.)) + ((UNIX COHERENT PLAN9) '(#\/)) + ((VMS) '(#\: #\])) + (else + (slib:warn "require.scm" 'unknown 'software-type (software-type)) + "/")))) + (lambda (chr) (and (memv chr suffi) #t)))) +;@ +(define (pathname->vicinity pathname) + (let loop ((i (- (string-length pathname) 1))) + (cond ((negative? i) "") + ((vicinity:suffix? (string-ref pathname i)) + (substring pathname 0 (+ i 1))) + (else (loop (- i 1)))))) +(define (program-vicinity) + (if *load-pathname* + (pathname->vicinity *load-pathname*) + (slib:error 'program-vicinity " called; use slib:load to load"))) +;@ +(define sub-vicinity + (case (software-type) + ((VMS) (lambda + (vic name) + (let ((l (string-length vic))) + (if (or (zero? (string-length vic)) + (not (char=? #\] (string-ref vic (- l 1))))) + (string-append vic "[" name "]") + (string-append (substring vic 0 (- l 1)) + "." name "]"))))) + (else (let ((*vicinity-suffix* + (case (software-type) + ((NOSVE) ".") + ((MACOS THINKC) ":") + ((MS-DOS WINDOWS ATARIST OS/2) "\\") + ((UNIX COHERENT PLAN9 AMIGA) "/")))) + (lambda (vic name) + (string-append vic name *vicinity-suffix*)))))) +;@ +(define (make-vicinity <pathname>) <pathname>) +;@ +(define with-load-pathname + (let ((exchange + (lambda (new) + (let ((old *load-pathname*)) + (set! *load-pathname* new) + old)))) + (lambda (path thunk) + (let ((old #f)) + (dynamic-wind + (lambda () (set! old (exchange path))) + thunk + (lambda () (exchange old))))))) + +;;@ *FEATURES* is a list of symbols naming the (SLIB) features +;;; initially supported by this implementation. (define *features* '( source ;can load scheme source files - ;(slib:load-source "filename") -; compiled ;can load compiled files - ;(slib:load-compiled "filename") + ;(SLIB:LOAD-SOURCE "filename") +;;; compiled ;can load compiled files + ;(SLIB:LOAD-COMPILED "filename") + vicinity + srfi-59 ;; Scheme report features + ;; R5RS-compliant implementations should provide all 9 features. r5rs ;conforms to eval ;R5RS two-argument eval @@ -107,59 +186,60 @@ delay ;has DELAY and FORCE multiarg-apply ;APPLY can take more than 2 args. char-ready? + rev4-optional-procedures ;LIST-TAIL, STRING-COPY, + ;STRING-FILL!, and VECTOR-FILL! + + ;; These four features are optional in both R4RS and R5RS + +;;; multiarg/and- ;/ and - can take more than 2 args. rationalize - rev4-optional-procedures ;LIST-TAIL, STRING->LIST, - ;LIST->STRING, STRING-COPY, - ;STRING-FILL!, LIST->VECTOR, - ;VECTOR->LIST, and VECTOR-FILL! +;;; transcript ;TRANSCRIPT-ON and TRANSCRIPT-OFF + with-file ;has WITH-INPUT-FROM-FILE and + ;WITH-OUTPUT-TO-FILE r4rs ;conforms to ieee-p1178 ;conforms to -; r3rs ;conforms to +;;; r3rs ;conforms to -; rev2-procedures ;SUBSTRING-MOVE-LEFT!, +;;; rev2-procedures ;SUBSTRING-MOVE-LEFT!, ;SUBSTRING-MOVE-RIGHT!, ;SUBSTRING-FILL!, ;STRING-NULL?, APPEND!, 1+, ;-1+, <?, <=?, =?, >?, >=? -; object-hash ;has OBJECT-HASH +;;; object-hash ;has OBJECT-HASH -; multiarg/and- ;/ and - can take more than 2 args. - with-file ;has WITH-INPUT-FROM-FILE and - ;WITH-OUTPUT-TO-FILE -; transcript ;TRANSCRIPT-ON and TRANSCRIPT-OFF -; ieee-floating-point ;conforms to IEEE Standard 754-1985 + full-continuation ;can return multiple times +;;; 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 +;;; 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 +;;; 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 +;;; 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 +;;; 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) @@ -190,7 +270,7 @@ ;;; (DELETE-FILE <string>) (define (delete-file file-name) - (s48-system (string-append "rm " 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. @@ -200,11 +280,19 @@ (define (make-exchanger obj) (lambda (rep) (let ((old obj)) (set! obj rep) old))) + +;@ (define (open-file filename modes) - (case modes - ((r rb) (open-input-file filename)) - ((w wb) (open-output-file filename)) - (else (slib:error 'open-file 'mode? modes)))) + (call-with-current-continuation + (lambda (k) + (s48-with-handler + (lambda (condition decline) + (k #f)) + (case modes + ((r rb) (lambda () (open-input-file filename))) + ((w wb) (lambda () (open-output-file filename))) + (else (slib:error 'open-file 'mode? modes))))))) + (define (port? obj) (or (input-port? port) (output-port? port))) (define (call-with-open-ports . ports) (define proc (car ports)) @@ -238,36 +326,11 @@ ;;; CHAR-CODE-LIMIT is one greater than the largest integer which can ;;; be returned by CHAR->INTEGER. +(define char-code-limit 256) (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)))) -;;; asin is totally busted -(define (asin y) (two-arg:atan y (sqrt (- 1 (* y y))))) - -;;; Workaround inexact->exact and exact->inexact bugs. -(define inexact->exact - (let ((i->e inexact->exact)) - (lambda (z) - (if (exact? z) z (i->e z))))) -(define exact->inexact - (let ((e->i exact->inexact)) - (lambda (z) - (if (inexact? z) z (e->i z))))) + (let ((code0 (s48-char->integer (integer->char 0)))) + (lambda (char) (- (s48-char->integer char) code0)))) ;;; MOST-POSITIVE-FIXNUM is used in modular.scm (define most-positive-fixnum #x1FFFFFFF) @@ -324,35 +387,15 @@ (define (defmacro:eval x) (base:eval (defmacro:expand* x))) (define defmacro:load macro:load) +;; slib:eval-load definition moved to "require.scm" -(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) - (write (car args) cep) - (newline cep) - (for-each (lambda (x) - (display " " cep) - (write x cep) - (newline cep)) - (cdr args))))) +(define (slib:warn . args) + ;;(if (provided? 'trace) (print-call-stack cep)) + (apply s48-warn args)) ;;; define an error procedure for the library (define (slib:error . args) - (if (provided? 'trace) (print-call-stack (current-error-port))) + ;;(if (provided? 'trace) (print-call-stack (current-error-port))) (apply s48-error args)) ;;; define these as appropriate for your system. @@ -371,11 +414,10 @@ (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)) +;;; return if exiting not supported. +(define (slib:exit . opt) + (s48-exit (if (pair? opt) (car opt) 0))) ;;; Here for backward compatability (define scheme-file-suffix @@ -385,7 +427,6 @@ ;;; (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 @@ -425,9 +466,26 @@ (require 'defmacroexpand) (define *args* '()) (define (program-arguments) (cons "scheme48" *args*)) -(set! *catalog* #f) + +;@ +(define (call-with-output-string proc) + (let ((port (s48-make-string-output-port))) + (proc port) + (s48-string-output-port-output port))) +(define (call-with-input-string string proc) + (proc (s48-make-string-input-port string))) + +;@ +(define (current-time) + (s48-time-seconds (s48-current-time))) +(define (difftime caltime1 caltime0) + (- caltime1 caltime0)) +(define (offset-time caltime offset) + (+ caltime offset)) + +(require #f) ,collect ,batch off -,dump slib.image "(slib 3a1)" +,dump slib.image "(slib 3a2)" ,exit |