ikarus/scheme/ikarus.main.ss

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;;; Ikarus Scheme -- A compiler for R6RS Scheme.
;;; Copyright (C) 2006,2007,2008 Abdulaziz Ghuloum
;;;
;;; This program is free software: you can redistribute it and/or modify
;;; it under the terms of the GNU General Public License version 3 as
;;; published by the Free Software Foundation.
;;;
;;; This program is distributed in the hope that it will be useful, but
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
;;; General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with this program. If not, see <http://www.gnu.org/licenses/>.
;;; this is here to test that we can import things from other
;;; libraries within the compiler itself.
(library (ikarus startup)
(export print-greeting init-library-path host-info)
(import (except (ikarus) host-info))
(include "ikarus.config.ss")
(define (host-info) target)
(define (print-greeting)
(printf "Ikarus Scheme version ~a~a~a~a\n"
ikarus-version
(if (zero? (string-length ikarus-revision)) "" "+")
(if (= (fixnum-width) 30)
""
", 64-bit")
(if (zero? (string-length ikarus-revision))
""
(format " (revision ~a, build ~a)"
(+ 1 (string->number ikarus-revision))
(let-syntax ([ds (lambda (x) (date-string))])
ds))))
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(display "Copyright (c) 2006-2009 Abdulaziz Ghuloum\n\n"))
(define (init-library-path)
(define (split s)
(define (nodata i s ls)
(cond
[(= i (string-length s)) ls]
[(char=? (string-ref s i) #\:) (nodata (+ i 1) s ls)]
[else (data (+ i 1) s ls (list (string-ref s i)))]))
(define (data i s ls ac)
(cond
[(= i (string-length s))
(cons (list->string (reverse ac)) ls)]
[(char=? (string-ref s i) #\:)
(nodata (+ i 1) s
(cons (list->string (reverse ac)) ls))]
[else (data (+ i 1) s ls (cons (string-ref s i) ac))]))
(reverse (nodata 0 s '())))
(library-path
(cons "."
(append
(split (or (getenv "IKARUS_LIBRARY_PATH") ""))
(list ikarus-lib-dir))))
(let ([prefix
(lambda (ext ls)
(append (map (lambda (x) (string-append ext x)) ls) ls))])
(library-extensions
(prefix "/main"
(prefix ".ikarus"
(library-extensions)))))))
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;;; Finally, we're ready to evaluate the files and enter the cafe.
(library (ikarus main)
(export)
(import (except (ikarus) load-r6rs-script)
(except (ikarus startup) host-info)
(only (psyntax library-manager) current-library-expander)
(only (ikarus.reader.annotated) read-source-file)
(only (ikarus.symbol-table) initialize-symbol-table!)
(only (ikarus load) load-r6rs-script))
(initialize-symbol-table!)
(init-library-path)
(let-values ([(files script script-type args)
(let f ([args (command-line-arguments)])
(cond
[(null? args) (values '() #f #f '())]
[(string=? (car args) "-O2")
(optimize-level 2)
(f (cdr args))]
[(string=? (car args) "-O1")
(optimize-level 1)
(f (cdr args))]
[(string=? (car args) "-O0")
(optimize-level 0)
(f (cdr args))]
[(string=? (car args) "--")
(values '() #f #f (cdr args))]
[(string=? (car args) "--script")
(let ([d (cdr args)])
(cond
[(null? d)
(die 'ikarus "--script requires a script name")]
[else
(values '() (car d) 'script (cdr d))]))]
[(string=? (car args) "--r6rs-script")
(let ([d (cdr args)])
(cond
[(null? d)
(die 'ikarus "--r6rs-script requires a script name")]
[else
(values '() (car d) 'r6rs-script (cdr d))]))]
[(string=? (car args) "--compile-dependencies")
(let ([d (cdr args)])
(cond
[(null? d)
(die 'ikarus
"--compile-dependencies requires a script name")]
[else
(values '() (car d) 'compile (cdr d))]))]
[else
(let-values ([(f* script script-type a*) (f (cdr args))])
(values (cons (car args) f*) script script-type a*))]))])
(define (assert-null files who)
(unless (null? files)
(apply die 'ikarus
(format "load files not allowed for ~a" who)
files)))
(cond
[(eq? script-type 'r6rs-script)
(command-line-arguments (cons script args))
(for-each
(lambda (filename)
(for-each
(lambda (src)
((current-library-expander) src))
(read-source-file filename)))
files)
(load-r6rs-script script #f #t)
(exit 0)]
[(eq? script-type 'compile)
(assert-null files "--compile-dependencies")
(command-line-arguments (cons script args))
(load-r6rs-script script #t #f)
(exit 0)]
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[(eq? script-type 'script) ; no greeting, no cafe
(command-line-arguments (cons script args))
(for-each load files)
(load script)
(exit 0)]
[else
(print-greeting)
(command-line-arguments (cons "*interactive*" args))
(for-each load files)
(new-cafe)
(exit 0)])))