ikarus/scheme/ikarus.pretty-formats.ss

137 lines
4.3 KiB
Scheme

;;; 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/>.
(library (ikarus.pretty-formats)
(export get-fmt pretty-format)
(import (except (ikarus) pretty-format))
(define h (make-eq-hashtable))
(define (get-fmt name)
(hashtable-ref h name #f))
(define (set-fmt! name fmt)
(hashtable-set! h name fmt))
(define pretty-format
(lambda (x)
(unless (symbol? x)
(die 'pretty-format "not a symbol" x))
(case-lambda
[() (hashtable-ref h x #f)]
[(v) (hashtable-set! h x v)])))
;;; standard formats
(set-fmt! 'quote '(read-macro . "'"))
(set-fmt! 'unquote '(read-macro . ","))
(set-fmt! 'unquote-splicing '(read-macro . ",@"))
(set-fmt! 'quasiquote '(read-macro . "`"))
(set-fmt! 'syntax '(read-macro . "#'"))
(set-fmt! 'quasisyntax '(read-macro . "#`"))
(set-fmt! 'unsyntax '(read-macro . "#,"))
(set-fmt! 'unsyntax-splicing '(read-macro . "#,@"))
;(set-fmt! '|#primitive| '(read-macro . "#%"))
(set-fmt! 'let '(alt
(_ (0 [e 0 e] ...) tab e ...)
(_ x (0 [e 0 e] ...) tab e ...)))
(set-fmt! 'letrec '(_ (0 [e 0 e] ...) tab e ...))
(set-fmt! 'letrec* '(_ (0 [e 0 e] ...) tab e ...))
(set-fmt! 'let-syntax '(_ (0 [e 0 e] ...) tab e ...))
(set-fmt! 'letrec-syntax '(_ (0 [e 0 e] ...) tab e ...))
(set-fmt! 'let* '(_ (0 [e 0 e] ...) tab e ...))
(set-fmt! 'let-values '(_ (0 [e 0 e] ...) tab e tab e* ...))
(set-fmt! 'cond '(_ tab [0 e ...] ...))
(set-fmt! 'define '(_ name tab e ...))
(set-fmt! 'case-lambda
'(_ tab [0 e ...] ...))
(set-fmt! 'struct-case
'(_ e tab [e 0 e ...] ...))
(set-fmt! 'if '(_ test 3 e ...))
(set-fmt! 'and '(and test 4 e ...))
(set-fmt! 'or '(or test 3 e ...))
(set-fmt! 'begin '(_ tab e ...))
(set-fmt! 'lambda '(_ fmls tab e tab e* ...))
(set-fmt! 'case '(_ e tab [e 0 e] ...))
(set-fmt! 'syntax-rules '(_ kwd* tab [e 0 e] ...))
(set-fmt! 'syntax-case '(_ expr kwd*
tab (e 0 e 0 e ...) ...))
(set-fmt! 'module '(alt (_ (fill ...) tab e ...)
(_ name (fill ...) tab e ...)))
(set-fmt! 'library '(_ name tab e ...))
(set-fmt! 'import '(_ tab e ...))
)
#!eof
(define (test x)
(pretty-print x)
(printf "====================================\n"))
(test 12)
(test #t)
(test #f)
(test (if #f #f))
(test '())
(test "string")
(test "\n")
(test "\r")
(test (string (integer->char 0)))
(test (string (integer->char 240)))
(test 'hello)
(test '(foo bar))
(test '
(define pp
(case-lambda
[(x) (pretty x (current-output-port))]
[(x p)
(if (output-port? p)
(pretty x p)
(die 'pretty-print "not an output port" p))])))
(test '(384 7384 83947 893478 9137489 3894789 134789314 79817238
97314897 318947138974 981374 89137489 1374897 13498713
894713894 137894 89137489 1374 891348314 12 17 9000000 . 17))
(test '(',,@#''(quote (syntax unquote-splicing . 2) 2)))
(test '#(1 2 3))
(test '#(384 7384 83947 893478 9137489 3894789 134789314 79817238
97314897 318947138974 981374 89137489 1374897 13498713
894713894 137894 89137489))
(define (test-file x)
(printf "testing file ~s ...\n" x)
(with-input-from-file x
(lambda ()
(let f ([i 0])
(let ([x (read)] [fname (format "tmp.~a.pp" i)])
(unless (eof-object? x)
(let ([y
(begin
(call-with-output-file fname
(lambda (p)
(pretty-print x p))
'replace)
(with-input-from-file fname read))])
(if (equal? x y)
(f (fxadd1 i))
(die 'test-file "mismatch" x y)))))))))