From bd9733926076885e3417b74de76e4c9c7bc56254 Mon Sep 17 00:00:00 2001 From: Bryan Newbold Date: Mon, 20 Feb 2017 00:05:28 -0800 Subject: Import Upstream version 2c7 --- pscheme.init | 202 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 202 insertions(+) create mode 100644 pscheme.init (limited to 'pscheme.init') diff --git a/pscheme.init b/pscheme.init new file mode 100644 index 0000000..dfa05a8 --- /dev/null +++ b/pscheme.init @@ -0,0 +1,202 @@ +;;; "pscheme.init" -*-scheme-*- +;;; SLIB init file for Pocket Scheme +;;; SLIB orig Author: Aubrey Jaffer (jaffer@ai.mit.edu) +;;; Author: Ben Goetter +;;; Initial work for 0.2.3 by Robert Goldman (goldman@htc.honeywell.com) +;;; +;;; This code is in the public domain. + +; best fit for Windows CE? +(define (software-type) 'MS-DOS) + +(define (scheme-implementation-type) 'PocketScheme) +(define (scheme-implementation-version) "0.3.6") + +(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 *features* + '(source + rev4-report + ieee-p1178 + rev4-optional-procedures + multiarg/and- + multiarg-apply + with-file + char-ready? + defmacro + delay + eval + dynamic-wind + full-continuation + ;;trace ; Comment out for SLIB TRACE macros + system + string-port + )) + +;;; (OUTPUT-PORT-WIDTH ) +(define (output-port-width . arg) 79) + +;;; (OUTPUT-PORT-HEIGHT ) +(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? ) +(define (file-exists? f) + (let ((file #f)) + (with-handlers (((lambda (x) #t) (lambda (x) #f))) + (set! file (open-input-file f)) + (close-input-port file) + #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. +;;; The secondary representation extends fixnum values to 0xffffffff. +(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 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 slib:eval) + +(define (slib:eval-load evl) + (if (not (file-exists? )) + (set! (string-append (scheme-file-suffix)))) + (call-with-input-file + (lambda (port) + (let ((old-load-pathname *load-pathname*)) + (set! *load-pathname* ) + (do ((o (read port) (read port))) + ((eof-object? o)) + (evl o)) + (set! *load-pathname* old-load-pathname))))) + +(define (defmacro:load ) + (slib:eval-load 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 . k) + (error + (cond + ((= (length k) 0) '()) + ((= (length k) 1) (car k)) + ((provided? 'string-port) + (call-with-output-string + (lambda (out) + (let ((add-space #f)) + (map + (lambda (arg) + (if add-space (write-char #\space out) (set! add-space #t)) + (display arg out)) + k))))) + (else (car k))))) + +;;; For the benefit of slib:error above, 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) ".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) + (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) + +;;; Hold onto pscheme native version +(define pscheme:require require) +(slib:load (in-vicinity (library-vicinity) "require")) -- cgit v1.2.3