242 lines
7.1 KiB
Scheme
242 lines
7.1 KiB
Scheme
;;;; Template for configuration of *features* for STk -*-scheme-*-
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;;; Copyright (C) 1991, 1992, 1993 Aubrey Jaffer.
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;; Author Erick Gallesio (eg@unice.fr)
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(require "unix")
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;;; (software-type) should be set to the generic operating system type.
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;;; UNIX, VMS, MACOS, AMIGA and MSDOS are supported.
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(define (software-type) 'UNIX)
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;;; (scheme-implementation-type) should return the name of the scheme
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;;; implementation loading this file.
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(define (scheme-implementation-type) '|STk|)
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;;; (scheme-implementation-version) should return a string describing
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;;; the version the scheme implementation loading this file.
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(define (scheme-implementation-version) (version))
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;;; (implementation-vicinity) should be defined to be the pathname of
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;;; the directory where any auxillary files to your Scheme
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;;; implementation reside.
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(define (implementation-vicinity) "/usr/local/lib/stk/")
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;;; (library-vicinity) should be defined to be the pathname of the
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;;; directory where files of Scheme library functions reside.
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(define library-vicinity
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(let ((library-path (or (getenv "SCHEME_LIBRARY_PATH") "/usr/local/lib/slib/")))
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(lambda () library-path)))
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;;;
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;;;
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(define home-vicinity
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(let ((home-path (or (getenv "HOME") "/")))
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(lambda () home-path)))
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;;; *FEATURES* should be set to a list of symbols describing features
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;;; of this implementation. Suggestions for features are:
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(define *features*
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'(
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source ;can load scheme source files
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;(slib:load-source "filename")
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compiled ;can load compiled files
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;(slib:load-compiled "filename")
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rev4-report ;conforms to
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; rev3-report ;conforms to
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; ieee-p1178 ;conforms to
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; sicp ;runs code from Structure and
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;Interpretation of Computer
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;Programs by Abelson and Sussman.
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rev4-optional-procedures ;LIST-TAIL, STRING->LIST,
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;LIST->STRING, STRING-COPY,
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;STRING-FILL!, LIST->VECTOR,
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;VECTOR->LIST, and VECTOR-FILL!
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; rev3-procedures ;LAST-PAIR, T, and NIL
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; rev2-procedures ;SUBSTRING-MOVE-LEFT!,
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;SUBSTRING-MOVE-RIGHT!,
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;SUBSTRING-FILL!,
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;STRING-NULL?, APPEND!, 1+,
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;-1+, <?, <=?, =?, >?, >=?
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multiarg/and- ;/ and - can take more than 2 args.
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multiarg-apply ;APPLY can take more than 2 args.
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; rationalize
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delay ;has DELAY and FORCE
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with-file ;has WITH-INPUT-FROM-FILE and
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;WITH-OUTPUT-FROM-FILE
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string-port ;has CALL-WITH-INPUT-STRING and
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;CALL-WITH-OUTPUT-STRING
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; transcript ;TRANSCRIPT-ON and TRANSCRIPT-OFF
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; char-ready?
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; macro ;has R4RS high level macros
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; defmacro ;has Common Lisp DEFMACRO
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eval ;SLIB:EVAL is single argument eval
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; record ;has user defined data structures
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; values ;proposed multiple values
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dynamic-wind ;proposed dynamic-wind
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ieee-floating-point ;conforms to
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full-continuation ;can return multiple times
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; object-hash ;has OBJECT-HASH
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; sort ; commented because icomplete
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; queue ;queues
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; pretty-print
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; object->string
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; format
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; compiler ;has (COMPILER)
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ed ;(ED) is editor
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system ;posix (system <string>)
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getenv ;posix (getenv <string>)
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; program-arguments ;returns list of strings (argv)
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; Xwindows ;X support
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; curses ;screen management package
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; termcap ;terminal description package
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; terminfo ;sysV terminal description
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))
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;;; (OUTPUT-PORT-WIDTH <port>)
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(define (output-port-width . arg) 79)
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;;; (OUTPUT-PORT-HEIGHT <port>)
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(define (output-port-height . arg) 24)
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;;; (TMPNAM) makes a temporary file name.
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(define tmpnam (let ((cntr 100))
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(lambda () (set! cntr (+ 1 cntr))
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(string-append "slib_" (number->string cntr)))))
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;;; (DELETE-FILE <string>)
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(define (delete-file f) (system (format #f "/bin/rm ~A" f)))
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;;; FORCE-OUTPUT flushes any pending output on optional arg output port
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;;; use this definition if your system doesn't have such a procedure.
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(define (force-output . arg) (apply flush arg))
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;;; CHAR-CODE-LIMIT is one greater than the largest integer which can
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;;; be returned by CHAR->INTEGER.
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(define char-code-limit 256)
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;;; MOST-POSITIVE-FIXNUM is used in modular.scm
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(define most-positive-fixnum #x0fffffff)
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;;; If your implementation provides eval SLIB:EVAL is single argument
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;;; eval using the top-level (user) environment.
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(define slib:eval eval)
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;;; If your implementation provides R4RS macros:
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;(define macro:eval slib:eval)
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;(define macro:load load)
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(define *macros* '())
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(define-macro (defmacro name args . body)
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`(begin
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(define-macro (,name ,@args) ,@body)
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(set! *macros* (cons ,name *macros*))))
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(define (defmacro? m) (and (memv m *macros*) #t))
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(define macroexpand-1 MACRO-EXPAND-1)
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(define macroexpand MACRO-EXPAND)
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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(define gentemp GENSYM)
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(define base:eval slib:eval)
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(define (defmacro:eval x) (base:eval (defmacro:expand* x)))
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(define (defmacro:expand* x)
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(require 'defmacroexpand) (apply defmacro:expand* x '()))
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(define (defmacro:load <pathname>)
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(slib:eval-load <pathname> defmacro:eval))
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(define (slib:eval-load <pathname> evl)
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(if (not (file-exists? <pathname>))
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(set! <pathname> (string-append <pathname> (scheme-file-suffix))))
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(call-with-input-file <pathname>
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(lambda (port)
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(let ((old-load-pathname *load-pathname*))
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(set! *load-pathname* <pathname>)
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(do ((o (read port) (read port)))
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((eof-object? o))
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(evl o))
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(set! *load-pathname* old-load-pathname)))))
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;;; define an error procedure for the library
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(define (slib:error . args)
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(error (apply string-append (map (lambda (x) (format #f " ~a" x)) args))))
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;;; define these as appropriate for your system.
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(define slib:tab (integer->char 9))
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(define slib:form-feed (integer->char 12))
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;;; Define these if your implementation's syntax can support it and if
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;;; they are not already defined.
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(define -1+ 1-)
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(define in-vicinity string-append)
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;;; Define SLIB:EXIT to be the implementation procedure to exit or
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;;; return if exitting not supported.
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(define slib:exit exit)
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;;; Here for backward compatability
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(define scheme-file-suffix
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(let ((suffix (case (software-type)
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((NOSVE) "_scm")
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(else ".scm"))))
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(lambda () suffix)))
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;;; (SLIB:LOAD-SOURCE "foo") should load "foo.scm" or with whatever
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;;; suffix all the module files in SLIB have. See feature 'SOURCE.
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(define slib:load-source LOAD)
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;;; (SLIB:LOAD-COMPILED "foo") should load the file that was produced
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;;; by compiling "foo.scm" if this implementation can compile files.
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;;; See feature 'COMPILED.
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(define slib:load-compiled load)
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;;;
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;;; Retain original require/provide before loading "require.scm"
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;;;
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(define stk:require require)
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(define stk:provide provide)
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(define stk:provided? provided?)
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(define slib:load slib:load-source)
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(slib:load (in-vicinity (library-vicinity) "require"))
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;;;
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;;; Redefine require/provide so that symbols use SLIB one and strings use STk one
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;;;
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(define require
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(let ((slib:require require))
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(lambda (item)
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((if (symbol? item) slib:require stk:require) item ))))
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(define provide
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(let ((slib:provide provide))
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(lambda (item)
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((if (symbol? item) slib:provide stk:provide) item))))
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(define provided?
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(let ((slib:provided? provided?))
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(lambda (item)
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((if (symbol? item) slib:provided? stk:provided?) item))))
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(define identity (lambda (x) x))
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