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Diffstat (limited to 'module/slib/pscheme.init')
-rw-r--r-- | module/slib/pscheme.init | 206 |
1 files changed, 206 insertions, 0 deletions
diff --git a/module/slib/pscheme.init b/module/slib/pscheme.init new file mode 100644 index 000000000..1cd117fcc --- /dev/null +++ b/module/slib/pscheme.init @@ -0,0 +1,206 @@ +;;; "pscheme.init" SLIB init file for Pocket Scheme -*-scheme-*- +;;; Author: Ben Goetter <goetter@mazama.net> +;;; last revised for 1.1.0 on 16 October 2000 +;;; Initial work for 0.2.3 by Robert Goldman (goldman@htc.honeywell.com) +;;; SLIB orig Author: Aubrey Jaffer (jaffer@ai.mit.edu) +;;; +;;; This code is in the public domain. + +; best fit for Windows CE? +(define (software-type) 'MS-DOS) + +(define (scheme-implementation-type) 'Pocket-Scheme) +(define (scheme-implementation-version) + (let ((v (version))) + (string-append + (number->string (car v)) "." + (number->string (cadr v)) "." + (number->string (caddr v))))) +(define (scheme-implementation-home-page) "http://www.mazama.net/scheme/pscheme.htm") + + +(define in-vicinity string-append) + +(define (implementation-vicinity) "\\Program Files\\Pocket Scheme\\") +(define (library-vicinity) (in-vicinity (implementation-vicinity) "slib\\")) +(define (home-vicinity) "\\My Documents\\") + +;(define (implementation-vicinity) "D:\\SRC\\PSCHEME\\BUILD\\TARGET\\X86\\NT\\DBG\\") +;(define (library-vicinity) "D:\\SRC\\SLIB\\") +;(define (home-vicinity) "D:\\SRC\\PSCHEME\\") + +(define *features* + '(source + rev4-report + ieee-p1178 + rev4-optional-procedures + multiarg/and- + multiarg-apply + with-file + char-ready? + defmacro + rationalize + delay + eval + dynamic-wind + full-continuation +; Undef this to get the SLIB TRACE macros +; trace + system + string-port + )) + + +;;; (OUTPUT-PORT-WIDTH <port>) +;;; (OUTPUT-PORT-HEIGHT <port>) +;; $BUGBUG completely bogus values. +(define (output-port-width . arg) 79) +(define (output-port-height . arg) 12) + +;;; (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) + (with-handlers (((lambda (x) #t) (lambda (x) #f))) + (close-input-port (open-input-file f)) + #t)) + +;; pscheme: current-error-port, delete-file, force-output already defined + +;;; CHAR-CODE-LIMIT is one greater than the largest integer which can +;;; be returned by CHAR->INTEGER. +;(define char-code-limit +; (with-handlers ( +; ((lambda (x) #t) (lambda (x) 256)) +; ) +; (integer->char 65535) +; 65536)) +;;; Currently there are only three clients of this symbol. +;;; Following observations relate to PScheme 0.3.5, JACAL 1a9, SLIB 2c5. +;;; JACAL: crashes when set to 65536. +;;; make-crc: extremely inefficient when set to 65536, spending forever in init +;;; precedence-parse: ignores any setting in excess of 256 +;;; So we patch it to 256. +(define char-code-limit 256) + +;;; MOST-POSITIVE-FIXNUM is used in modular.scm +;;; This is the most positive immediate-value fixnum in PScheme. +(define most-positive-fixnum #x07FFFFFF) + +;;; Return argument +(define (identity x) x) + +;;; 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 defmacro in terms of our define-macro +(define-macro (defmacro name args . body) + `(define-macro (,name ,@args) ,@body)) + +; following defns removed in 0.6.3 while I rethink macro support +;(define defmacro? macro?) +;(define macroexpand expand-macro) +;(define macroexpand-1 expand-macro-1) + +(define gentemp gensym) + +(define base:eval slib:eval) +(define defmacro:eval slib: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 (defmacro:load <pathname>) + (slib:eval-load <pathname> defmacro:eval)) + +(define slib:warn + (lambda args + (let ((port (current-error-port))) + (display "Warn: " port) + (for-each (lambda (x) (display x port)) args)))) + +;;; Define an error procedure for the library +(define slib:error error) + +;;; As announced by feature string-port +(define (call-with-output-string t) + (let* ((p (open-output-string)) + (r (t p)) + (s (get-output-string p))) + (close-output-port p) + s)) + +(define (call-with-input-string s t) + (let* ((p (open-input-string s)) + (r (t p))) + (close-input-port p) + r)) + +;;; define these as appropriate for your system. +(define slib:tab (integer->char 9)) +(define slib:form-feed (integer->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 it and if +;;; they are not already defined. + +(define (1+ n) (+ n 1)) +(define (-1+ n) (+ n -1)) +(define 1- -1+) + +;;; Define SLIB:EXIT to be the implementation procedure to exit or +;;; return if exitting not supported. +(define slib:exit exit) + +;;; 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) + (if (not (file-exists? f)) + (set! f (string-append f (scheme-file-suffix)))) + (load f)) + +;;; (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) + +;;; Pscheme and SLIB both define REQUIRE, so dispatch on argument type. +;;; The SLIB REQUIRE does accept strings, though this facility seems never to be used. +(define pscheme:require require) +(slib:load (in-vicinity (library-vicinity) "require")) +(define slib:require require) +(define (require x) + (if (string? x) (pscheme:require x) (slib:require x))) |