569 lines
17 KiB
Plaintext
569 lines
17 KiB
Plaintext
;;;;
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;;;; i n i t . s t k -- The file launched at startup
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;;;;
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;;;; Copyright © 1993-1998 Erick Gallesio - I3S-CNRS/ESSI <eg@unice.fr>
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;;;;
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;;;; Permission to use, copy, and/or distribute this software and its
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;;;; documentation for any purpose and without fee is hereby granted, provided
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;;;; that both the above copyright notice and this permission notice appear in
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;;;; all copies and derived works. Fees for distribution or use of this
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;;;; software or derived works may only be charged with express written
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;;;; permission of the copyright holder.
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;;;; This software is provided ``as is'' without express or implied warranty.
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;;;;
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;;;; $Id: init.stk 1.13 Fri, 10 Apr 1998 09:13:18 +0200 eg $
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;;;;
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;;;; Author: Erick Gallesio [eg@kaolin.unice.fr]
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;;;; Creation date: ??-Sep-1993 ??:??
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;;;; Last file update: 8-Apr-1998 11:41
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;;;;
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;;;==============================================================================
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;;;
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;;; Define some global variables (i.e. in the STk module)
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;;;
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;;;==============================================================================
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(with-module STk
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(import Scheme)
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(define *print-banner* #t) ; #f to avoid the Copyright message
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(define *debug* #f) ; #t for debuggging (disable macro inlining)
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(define *argc* (length *argv*))
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(define Tk:initialized? #f)
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(define *shared-suffix* (cond
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((string=? (substring (machine-type) 0 2) "HP") "sl")
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(else "so")))
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(define *load-suffixes* (list "stk" "stklos" "scm" *shared-suffix*))
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(define *load-path* #f)
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(define *load-verbose* #f))
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;;;==============================================================================
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;;;
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;;; The following code is in the Scheme module (since this file is loaded in the
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;;; Scheme module)
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;;;
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;;;==============================================================================
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(define call-with-current-continuation ;; The R5RS one
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(let ((call/cc call-with-current-continuation)) ;; The R4RS one
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(lambda (proc)
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(call/cc (lambda (cont)
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(proc (lambda l (cont (apply values l)))))))))
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(define call/cc call-with-current-continuation) ;; To make life easier
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(define ! system)
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;;;
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;;;; Some stuff for defining macros
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;;;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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(define define-macro #f)
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(define %replace #f)
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(define %beginify #f)
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(let ((if if) (and and) (begin begin) (set-car! set-car!) (set-cdr! set-cdr!)
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(not not) (pair? pair?) (car car) (cdr cdr)
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(null? null?) (cons cons)
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(let let) (macro macro) (list list) (append append))
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(set! %replace
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(lambda (before after)
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(if (and (not *debug*) (pair? before) (pair? after))
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(begin
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(set-car! before (car after))
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(set-cdr! before (cdr after))))
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after))
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(set! %beginify
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(lambda (forms)
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(if (null? (cdr forms)) (car forms) (cons 'begin forms))))
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(set! define-macro
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(macro form
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(let ((name (car (car (cdr form))))
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(args (cdr (car (cdr form)))))
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(list 'define name
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(list 'macro 'params
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(list '%replace
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'params
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(list 'apply
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(append (list 'lambda args)
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(cdr (cdr form)))
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(list 'cdr 'params)))))))))
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;;;
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;;;; Some utilities
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;;;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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(define gensym
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(let ((counter 0))
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(lambda prefix
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(set! counter (+ counter 1))
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(string->symbol
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(string-append (if (null? prefix) "G" (car prefix))
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(number->string counter))))))
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(define (apropos s)
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(if (not (symbol? s)) (error "apropos: bad symbol" s))
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(let ((res '())
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(env (the-environment))
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(str (symbol->string s)))
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(do ((l (cdr (environment->list env)) (cdr l))); cdr to avoid the binding to "s"
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((null? l) (if (null? res) #f (list->set res)))
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(do ((v (car l) (cdr v)))
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((null? v))
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(if (and (string-find? str (symbol->string (caar v)))
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(symbol-bound? (caar v)))
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(set! res (cons (caar v) res)))))))
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(define (documentation x)
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"provides documentation for its parameter if it exists"
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(define (nodoc)
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(format #t "No documentation available for ~A\n" x))
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(cond
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((closure? x) (let ((body (procedure-body x)))
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(if (string? (caddr body))
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(format #t "~A\n" (caddr body))
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(nodoc))))))
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(define make-unbound
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(let ((unbound (make-vector 1)))
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(lambda ()
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(vector-ref unbound 0))))
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(define unbound?
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(let ((unbound (make-unbound)))
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(lambda (o)
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(eq? o unbound))))
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(define (make-undefined)
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(if #f #t))
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(define (undefined? o)
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(eq? o (if #f #t)))
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(define-macro (define-variable var value) ;; The Elisp/CL defvar
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`(with-module STk
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(unless (symbol-bound? ',var) (define ,var ,value))))
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;;;
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;;;; Random
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;;;; This version of random is constructed over the C one. It can return
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;;;; bignum numbers. Idea is due to Nobuyuki Hikichi <hikichi@sra.co.jp>
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;;;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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(define random
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(let ((C-random random)
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(max-rand #x7fffffff)) ; Probably more on 64 bits machines
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(letrec ((rand (lambda (n)
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(cond
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((zero? n) 0)
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((< n max-rand) (C-random n))
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(else (+ (* (rand (quotient n max-rand)) max-rand)
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(rand (remainder n max-rand))))))))
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(lambda (n)
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(if (zero? n)
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(error "random: bad number: 0")
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(rand n))))))
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;;;
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;;;; do
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;;;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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(define-macro (do inits test . body)
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(let ((loop-name (gensym)))
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`(letrec ((,loop-name
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(lambda ,(map car inits)
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(if ,(car test)
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(begin ,@(if (null? (cdr test))
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(list (make-undefined))
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(cdr test)))
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(begin ,@body
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(,loop-name ,@(map (lambda (init)
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(if (null? (cddr init))
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(car init)
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(caddr init)))
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inits)))))))
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(,loop-name ,@(map cadr inits)))))
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;;;
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;;;; dotimes
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;;;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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(define-macro (dotimes binding . body)
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(if (list? binding)
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;; binding is a list
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(let ((var #f) (count #f) (result #f))
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(case (length binding)
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(2 (set! var (car binding))
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(set! count (cadr binding)))
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(3 (set! var (car binding))
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(set! count (cadr binding))
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(set! result (caddr binding)))
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(else (error "dotimes: bad binding construct: ~S" binding)))
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`(do ((,var 0 (+ ,var 1)))
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((= ,var ,count) ,result)
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,@body))
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;; binding is ill-formed
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(error "dotimes: binding is not a list: ~S" binding)))
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;;;
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;;;; case
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;;;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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(define-macro (case key . clauses)
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;; conditionally execute the clause eqv? to key
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(define (case-make-clauses key)
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`(cond ,@(map
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(lambda (clause)
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(if (pair? clause)
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(let ((case (car clause))
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(exprs (cdr clause)))
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(cond ((eq? case 'else)
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`(else ,@exprs))
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((pair? case)
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(if (= (length case) 1)
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`((eqv? ,key ',(car case)) ,@exprs)
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`((memv ,key ',case) ,@exprs)))
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(else
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`((eqv? ,key ',case) ,@exprs))))
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(error "case: invalid syntax in ~a" clause)))
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clauses)))
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(if (pair? key)
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(let ((newkey (gensym)))
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`(let ((,newkey ,key))
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,(case-make-clauses newkey)))
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(case-make-clauses key)))
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;;;
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;;;; fluid-let
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;;;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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(define-macro (fluid-let bindings . body)
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(let* ((vars (map car bindings))
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(vals (map cadr bindings))
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(tmps (map (lambda (x) (gensym)) vars)))
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`(let ,(map list tmps vars)
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(dynamic-wind
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(lambda () ,@(map (lambda (x y) `(set! ,x ,y)) vars vals))
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(lambda () ,@body)
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(lambda () ,@(map (lambda (x y) `(set! ,x ,y)) vars tmps))))))
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;;;
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;;;; Some usal macros
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;;;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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(define-macro (unquote form)
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(error "Usage of unquote outside of quasiquote in ,~A" form))
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(define-macro (unquote-splicing form)
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(error "Usage of unquote-splicing outside of quasiquote in ,@~A" form))
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(define 1+ (macro form (list + (cadr form) 1)))
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(define 1- (macro form (list - (cadr form) 1)))
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;;;
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;;;; Section 6.10
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;;;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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(define (call-with-input-file string proc)
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(let* ((file (open-input-file string))
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(result (proc file)))
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(close-input-port file)
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result))
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(define (call-with-output-file string proc)
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(let* ((file (open-output-file string))
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(result (proc file)))
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(close-output-port file)
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result))
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(define (call-with-input-string string proc)
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(proc (open-input-string string)))
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(define (call-with-output-string proc)
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(let ((str (open-output-string)))
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(proc str)
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(get-output-string str)))
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;;;
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;;;; File management
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;;;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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(define (build-path-from-shell-variable var)
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(let ((path (getenv var)))
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(if path
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(split-string path ":")
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'())))
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(let ((lib (%library-location)))
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;; If user has specified a load path with STK_LOAD_PATH, use it
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;; Always append STK_LIBRARY at end to be sure to find our files
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(set! *load-path* (append (list ".")
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(build-path-from-shell-variable "STK_LOAD_PATH")
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(list (expand-file-name
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(string-append lib "/../site-scheme"))
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(string-append lib "/STk")
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(string-append lib "/" (machine-type))))))
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;;;
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;;; Require/Provide/Provided?
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;;;
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(define require #f) ; This is a little bit tricky here: variables are
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(define provide #f) ; defined in the Scheme module, but their associated
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(define provided? #f) ; closure is in the STk module. In this way, the
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; LOAD done in the REQUIRE procedure is done in the
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; global namespace, which is what is desired for REQUIRE.
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(with-module STk
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(let ((provided '()))
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(set! require (lambda (what)
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(unless (member what provided)
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(load what (current-module))
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(unless (member what provided)
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(format #t "WARNING: ~S was not provided~%" what)))
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what))
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(set! provide (lambda (what)
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(unless (member what provided)
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(set! provided (cons what provided)))
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what))
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(set! provided? (lambda (what)
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(and (member what provided) #t)))))
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;;;
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;;;; Port conversions
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;;;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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(define (port->string p)
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(unless (or (input-port? p) (input-string-port? p))
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(error "port->string: Bad port ~S" p))
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(let loop ((res '()))
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(let ((line (read-line p)))
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(if (eof-object? line)
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(apply string-append (reverse res))
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(loop (cons "\n" (cons line res)))))))
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(define (port->list reader p)
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(unless (or (input-port? p) (input-string-port? p))
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(error "port->list: Bad port ~S" p))
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;; Read all the lines of port and put them in a list
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(let loop ((res '()) (sexp (reader p)))
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(if (eof-object? sexp)
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(reverse res)
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(loop (cons sexp res) (reader p)))))
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(define (port->sexp-list p)
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(port->list read p))
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(define (port->string-list p)
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(port->list read-line p))
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(define (exec command)
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(call-with-input-file (string-append "| " command) port->string))
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(define (exec-string-list command)
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(call-with-input-file (string-append "| " command) port->string-list))
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;;;
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;;;; Misc
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;;;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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(define (closure? obj)
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(and (procedure? obj) (procedure-body obj) #t))
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(define (primitive? obj)
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(and (procedure? obj) (not (procedure-body obj)) #t))
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(define (widget? obj)
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(and (tk-command? obj) (not (catch (obj 'configure)))))
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|
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(define (& . l)
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(let loop ((l l) (res ""))
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(if (null? l)
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res
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(let ((e (car l)))
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(loop (cdr l)
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(string-append res
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(cond
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((string? e) e)
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((symbol? e) (symbol->string e))
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((widget? e) (widget->string e))
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((number? e) (number->string e))
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(ELSE (format #f "~S" e)))))))))
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|
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(define-macro (unwind-protect body . unwind-forms)
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`(dynamic-wind
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(lambda () #f)
|
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(lambda () ,body)
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(lambda () ,@unwind-forms)))
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|
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(define-macro (when test . body)
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`(if ,test ,@(if (= (length body) 1) body `((begin ,@body)))))
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|
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(define-macro (unless test . body)
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`(if (not ,test) ,@(if (= (length body) 1) body `((begin ,@body)))))
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|
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(define-macro (multiple-value-bind vars form . body)
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`(apply (lambda ,vars ,@body) ,form))
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|
|
(define (os-kind)
|
|
(case (machine-type)
|
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(("MS_Win32") 'Windows)
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(else 'Unix)))
|
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|
|
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;;;
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;;;; Set functions
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|
;;;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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(define (list->set l)
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|
(letrec ((rem-dupl (lambda (l res)
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(cond
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((null? l) res)
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((memv (car l) res) (rem-dupl (cdr l) res))
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(ELSE (rem-dupl (cdr l) (cons (car l) res)))))))
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(rem-dupl l '())))
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|
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(define (set-union l1 l2)
|
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(list->set (append l1 l2)))
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|
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(define (set-intersection l1 l2)
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(cond ((null? l1) l1)
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((null? l2) l2)
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((memv (car l1) l2) (cons (car l1) (set-intersection (cdr l1) l2)))
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(else (set-intersection (cdr l1) l2))))
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|
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(define (set-difference l1 l2)
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(cond ((null? l1) l1)
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((memv (car l1) l2) (set-difference (cdr l1) l2))
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(else (cons (car l1) (set-difference (cdr l1) l2)))))
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;;;
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;;;; Module stuff
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|
;;;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
(define-macro (export . l)
|
|
`(begin
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|
,@(map (lambda (x)
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|
(let ((x (if (and (pair? x) (eq? (car x) 'setter))
|
|
(extended-name->scheme-name x)
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|
x)))
|
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`(export-symbol ',x (current-module))))
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|
l)
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|
,(make-undefined)))
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|
|
|
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(define ~ with-module)
|
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|
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#| FIXME: Probably more harmful than useful. Delete it?
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|
|
(define-macro (duplicate-module-exports from to . prefix)
|
|
(let* ((prefix (if (null? prefix) "" (symbol->string (car prefix))))
|
|
(exports (module-exports (find-module from)))
|
|
(symbols (map (lambda (x)
|
|
(string->symbol (string-append prefix (symbol->string x))))
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|
exports)))
|
|
`(with-module ,to
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,@(map (lambda (x y)
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|
`(define ,x (with-module ,from ,y)))
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|
symbols exports))))
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|
|#
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|
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|
;;;
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;;; quit and bye procedures. Since Tk redefine exit, they cannot be simple aliases
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|
;;;
|
|
(define quit (lambda l (apply exit l)))
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|
(define bye (lambda l (apply exit l)))
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|
|
|
;;;==============================================================================
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|
;;;
|
|
;;; Code for STklos autoloading
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|
;;;
|
|
;;;==============================================================================
|
|
|
|
(define-module STklos
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|
(import Scheme)
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|
(export define-class define-method define-generic describe make method)
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|
|
|
(autoload "stklos" define-class define-method define-generic make method)
|
|
(autoload "describe" describe))
|
|
|
|
|
|
;;;==============================================================================
|
|
;;;
|
|
;;; Finish initializations
|
|
;;;
|
|
;;;==============================================================================
|
|
|
|
(with-module STk
|
|
;; Make the STklos autoload symbols accessible from the global scope
|
|
(import STklos)
|
|
|
|
;; Define some useful autoload
|
|
(autoload "unix" basename dirname decompose-file-name)
|
|
(autoload "process" run-process process?)
|
|
(autoload "regexp" string->regexp regexp? regexp-replace regexp-replace-all)
|
|
(autoload "trace" trace untrace)
|
|
(autoload "hash" make-hash-table hash-table-hash)
|
|
(autoload "socket" make-server-socket make-client-socket)
|
|
(autoload "match" match-case match-lambda)
|
|
(autoload "ffi" define-external external-exists?)
|
|
(autoload "extset" setter extended-name->scheme-name)
|
|
(autoload "pp" pp) ;; martine pretty-print package
|
|
|
|
|
|
;; Procedure called for prompting the user
|
|
(define (repl-display-prompt module)
|
|
(let ((p (current-error-port))
|
|
(n (module-name module)))
|
|
(flush) ; flush *stdout* before printing the prompt
|
|
(format p "~A> " (case n
|
|
((stk) "STk")
|
|
((stklos) "STklos")
|
|
((scheme) "Scheme")
|
|
((tk) "Tk")
|
|
(else n)))
|
|
(flush p)))
|
|
|
|
;; Procedure called for printing toplevel evals
|
|
(define (repl-display-result result)
|
|
(unless (eqv? result (make-undefined))
|
|
(call-with-values (lambda () result)
|
|
(lambda l
|
|
(for-each (lambda (x) (write* x) (newline)) l))))))
|