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; Milawa - A Reflective Theorem Prover
; Copyright (C) 2005-2009 Kookamara LLC
;
; Contact:
;
; Kookamara LLC
; 11410 Windermere Meadows
; Austin, TX 78759, USA
; http://www.kookamara.com/
;
; License: (An MIT/X11-style license)
;
; Permission is hereby granted, free of charge, to any person obtaining a
; copy of this software and associated documentation files (the "Software"),
; to deal in the Software without restriction, including without limitation
; the rights to use, copy, modify, merge, publish, distribute, sublicense,
; and/or sell copies of the Software, and to permit persons to whom the
; Software is furnished to do so, subject to the following conditions:
;
; The above copyright notice and this permission notice shall be included in
; all copies or substantial portions of the Software.
;
; THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
; IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
; FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
; AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
; LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
; FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
; DEALINGS IN THE SOFTWARE.
;
; Original author: Jared Davis <jared@kookamara.com>
(in-package "CL-USER")
(defmacro report-time (message form)
`(let* ((start-time (get-internal-real-time))
(value ,form)
(stop-time (get-internal-real-time))
(elapsed (/ (coerce (- stop-time start-time) 'float)
internal-time-units-per-second)))
(format t ";; ~A took ~$ seconds~%" ,message elapsed)
value))
(defvar *milawa-readtable* (copy-readtable *readtable*))
(declaim (readtable *milawa-readtable*))
(defvar *milawa-abbreviations-hash-table*)
(declaim (type hash-table *milawa-abbreviations-hash-table*))
(defun milawa-sharp-equal-reader (stream subchar arg)
(declare (ignore subchar))
(multiple-value-bind
(value presentp)
(gethash arg *milawa-abbreviations-hash-table*)
(declare (ignore value))
(when presentp
(error "#~A= is already defined." arg))
(let ((object (read stream)))
(setf (gethash arg *milawa-abbreviations-hash-table*) object))))
(defun milawa-sharp-sharp-reader (stream subchar arg)
(declare (ignore stream subchar))
(or (gethash arg *milawa-abbreviations-hash-table*)
(error "#~A# used but not defined." arg)))
(let ((*readtable* *milawa-readtable*))
(set-dispatch-macro-character #\# #\# #'milawa-sharp-sharp-reader)
(set-dispatch-macro-character #\# #\= #'milawa-sharp-equal-reader))
(defconstant unique-cons-for-eof (cons 'unique-cons 'for-eof))
(defun milawa-read-file-aux (stream)
(let ((obj (read stream nil unique-cons-for-eof)))
(cond ((eq obj unique-cons-for-eof)
nil)
(t
(cons obj (milawa-read-file-aux stream))))))
(defun MILAWA::milawa-read-file (filename)
(format t ";; Reading from ~A~%" filename)
(report-time "Reading the file"
(let* ((*milawa-abbreviations-hash-table* (make-hash-table
:size 10000
:rehash-size 100000
:test 'eql))
(*readtable* *milawa-readtable*)
(*package* (find-package "MILAWA"))
(stream (open filename
:direction :input
:if-does-not-exist :error))
(contents (milawa-read-file-aux stream)))
(close stream)
;; the actual version of this for the proof checker includes
;; an acceptable-objectp check, but in this case we don't
;; really care.
contents)))
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