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Diffstat (limited to 'vscm.init')
| -rw-r--r-- | vscm.init | 306 |
1 files changed, 306 insertions, 0 deletions
diff --git a/vscm.init b/vscm.init new file mode 100644 index 0000000..7d4661b --- /dev/null +++ b/vscm.init @@ -0,0 +1,306 @@ +;;;"vscm.init" Configuration of *features* for VSCM -*-scheme-*- +;Copyright (C) 1994 Aubrey Jaffer +; +;Permission to copy this software, to redistribute it, and to use it +;for any purpose is granted, subject to the following restrictions and +;understandings. +; +;1. Any copy made of this software must include this copyright notice +;in full. +; +;2. I have made no warrantee or representation that the operation of +;this software will be error-free, and I am under no obligation to +;provide any services, by way of maintenance, update, or otherwise. +; +;3. In conjunction with products arising from the use of this +;material, there shall be no use of my name in any advertising, +;promotional, or sales literature without prior written consent in +;each case. + +;;; From: Matthias Blume <blume@cs.Princeton.EDU> +;;; Date: Tue, 1 Mar 1994 11:42:31 -0500 +;;; Disclaimer: The code below is only a quick hack. If I find some +;;; time to spare I might get around to make some more things work. +;;; In particular, string ports could be made available without too +;;; much trouble. + +;;; You have to provide ``vscm.init'' as an explicit command line +;;; argument. Since this is not very nice I would recommend the +;;; following installation procedure: + +;1. run scheme +;2. (load "vscm.init") +;3. (slib:dump "dumpfile") +;3. mv dumpfile place-where-vscm-standard-bootfile-resides, e.g. +; mv dumpfile /usr/local/vscm/lib/scheme-boot +; (In this case vscm should have been compiled with flag +; -DDEFAULT_BOOTFILE='"/usr/local/vscm/lib/scheme-boot"'. See +; Makefile (definition of DDP) for details.) + +(define (slib:dump dump-to-file) + (let ((args (dump dump-to-file))) + (if args + (begin + (display "[SLIB available]") + (newline) + (((mcm) 'toplevel) args)) + (quit)))) + +;;; Caveat: While playing with this code I discovered a nasty bug. +;;; (Something is wrong with my ``restore'' code -- it seems to break +;;; on 64 bit machines (not always, though).) It works on MIPS, etc. + +;;; (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) 'Vscm) + +;;; (scheme-implementation-version) should return a string describing the +;;; version the scheme implementation loading this file. + +(define (scheme-implementation-version) "?") + +;;; (implementation-vicinity) should be defined to be the pathname of +;;; the directory where any auxillary files to your Scheme +;;; implementation reside. + +(define (implementation-vicinity) + (case (software-type) + ((UNIX) "/usr/local/src/scheme/") + ((VMS) "scheme$src:") + ((MS-DOS) "C:\\scheme\\"))) + +;;; (library-vicinity) should be defined to be the pathname of the +;;; directory where files of Scheme library functions reside. + +(define library-vicinity + (let ((library-path + (or (getenv "SCHEME_LIBRARY_PATH") + ;; Uses this path if SCHEME_LIBRARY_PATH is not set. + (case (software-type) + ((UNIX) "/usr/local/lib/slib/") + ((VMS) "lib$scheme:") + ((MS-DOS) "C:\\SLIB\\") + (else ""))))) + (lambda () library-path))) + +;;; *FEATURES* should be set to a list of symbols describing features +;;; of this implementation. Suggestions for features are: + +(define *features* + '( + source ;can load scheme source files + ;(slib:load-source "filename") +; compiled ;can load compiled files + ;(slib:load-compiled "filename") + rev4-report ;conforms to +; rev3-report ;conforms to + ieee-p1178 ;conforms to +; sicp ;runs code from Structure and + ;Interpretation of Computer + ;Programs by Abelson and Sussman. + rev4-optional-procedures ;LIST-TAIL, STRING->LIST, + ;LIST->STRING, STRING-COPY, + ;STRING-FILL!, LIST->VECTOR, + ;VECTOR->LIST, and VECTOR-FILL! + rev3-procedures ;LAST-PAIR, T, and NIL +; rev2-procedures ;SUBSTRING-MOVE-LEFT!, + ;SUBSTRING-MOVE-RIGHT!, + ;SUBSTRING-FILL!, + ;STRING-NULL?, APPEND!, 1+, + ;-1+, <?, <=?, =?, >?, >=? + multiarg/and- ;/ and - can take more than 2 args. + multiarg-apply ;APPLY can take more than 2 args. + rationalize + delay ;has DELAY and FORCE + with-file ;has WITH-INPUT-FROM-FILE and + ;WITH-OUTPUT-FROM-FILE +; string-port ;has CALL-WITH-INPUT-STRING and + ;CALL-WITH-OUTPUT-STRING +; transcript ;TRANSCRIPT-ON and TRANSCRIPT-OFF +; char-ready? +; macro ;has R4RS high level macros +; defmacro ;has Common Lisp DEFMACRO + eval ;SLIB:EVAL is single argument eval +; record ;has user defined data structures + values ;proposed multiple values +; dynamic-wind ;proposed dynamic-wind + ieee-floating-point ;conforms to + full-continuation ;can return multiple times +; object-hash ;has OBJECT-HASH + +; sort +; queue ;queues +; pretty-print + object->string +; format +; 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) +; Xwindows ;X support +; curses ;screen management package +; termcap ;terminal description package +; terminfo ;sysV terminal description + )) + +;;; (OBJECT->STRING obj) -- analogous to WRITE +(define object->string string-write) + +;;; (PROGRAM-ARGUMENTS) +;;; +(define (program-arguments) command-line-arguments) + +;;; (OUTPUT-PORT-WIDTH <port>) +(define (output-port-width . arg) 79) + +;;; (CURRENT-ERROR-PORT) +(define current-error-port + (standard-port 2)) + +;;; (TMPNAM) makes a temporary file name. +(define tmpnam (let ((cntr 100)) + (lambda () (set! cntr (+ 1 cntr)) + (string-append "slib_" (number->string cntr))))) + +;;; (FILE-EXISTS? <string>) +(define (file-exists? f) + (system (string-append "test -f " f))) + +;;; (DELETE-FILE <string>) +(define (delete-file f) + (remove-file f)) + +;;; FORCE-OUTPUT flushes any pending output on optional arg output port +(define force-output flush) + +;;; CALL-WITH-INPUT-STRING and CALL-WITH-OUTPUT-STRING are the string +;;; port versions of CALL-WITH-*PUT-FILE. + +;;; CHAR-CODE-LIMIT is one greater than the largest integer which can +;;; be returned by CHAR->INTEGER. +(define char-code-limit 256) + +;;; MOST-POSITIVE-FIXNUM is used in modular.scm +(define most-positive-fixnum #x0fffffff) + +;;; Return argument +(define (identity x) x) + +;;; If your implementation provides eval SLIB:EVAL is single argument +;;; eval using the top-level (user) environment. +(define slib:eval eval) + +;;; If your implementation provides R4RS macros: +(define macro:eval slib:eval) +(define macro:load load) + +(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:expand* x) + (require 'defmacroexpand) (apply defmacro:expand* x '())) + +(define (defmacro:load <pathname>) + (slib:eval-load <pathname> defmacro:eval)) + +(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 an error procedure for the library +(define slib:error error) + +;;; define these as appropriate for your system. +(define slib:tab #\Tab) +(define slib:form-feed #\d12) + +;;; 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 it 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 + (cond ((null? args) (quit)) + ((eqv? #t (car args)) (quit)) + ((eqv? #f (car args)) (quit 1)) + (else (quit (car args)))))) + +;;; Here for backward compatability +(define scheme-file-suffix + (let ((suffix (case (software-type) + ((NOSVE) "_scm") + (else ".scm")))) + (lambda () suffix))) + +;;; (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) + +(slib:load (in-vicinity (library-vicinity) "require")) |