1;;; -*- mode: scheme; coding: utf-8; -*-
2;;;
3;;; Copyright (C) 2010 Free Software Foundation, Inc.
4;;;
5;;; This library is free software; you can redistribute it and/or modify it
6;;; under the terms of the GNU Lesser General Public License as published by
7;;; the Free Software Foundation; either version 3 of the License, or (at
8;;; your option) any later version.
9;;;
10;;; This library is distributed in the hope that it will be useful, but
11;;; WITHOUT ANY WARRANTY; without even the implied warranty of
12;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser
13;;; General Public License for more details.
14;;;
15;;; You should have received a copy of the GNU Lesser General Public License
16;;; along with this program.  If not, see <http://www.gnu.org/licenses/>.
17
18(define-module (system base lalr)
19
20  ;; XXX: In theory this import is not needed but the evaluator (not the
21  ;; compiler) complains about `lexical-token' being unbound when expanding
22  ;; `(define-record-type lexical-token ...)' if we omit it.
23  #:use-module (srfi srfi-9)
24
25  #:export (lalr-parser print-states
26
27            make-lexical-token lexical-token?
28            lexical-token-category
29            lexical-token-source
30            lexical-token-value
31
32            make-source-location source-location?
33            source-location-input
34            source-location-line
35            source-location-column
36            source-location-offset
37            source-location-length
38            source-location->source-properties
39
40            ;; `lalr-parser' is a defmacro, which produces code that refers to
41            ;; these drivers.
42            lr-driver glr-driver))
43
44;; The LALR parser generator was written by Dominique Boucher.  It's available
45;; from http://code.google.com/p/lalr-scm/ and released under the LGPLv3+.
46(include-from-path "system/base/lalr.upstream.scm")
47
48(define (source-location->source-properties loc)
49  `((filename . ,(source-location-input loc))
50    (line . ,(source-location-line loc))
51    (column . ,(source-location-column loc))))
52