mes/module/nyacc/lang/c99/xparser.scm
2017-03-28 20:26:16 +02:00

80 lines
2.7 KiB
Scheme

;;; nyacc/lang/c99/xparser.scm - copied from parser.scm
;;;
;;; Copyright (C) 2015 Matthew R. Wette
;;;
;;; This program is free software: you can redistribute it and/or modify
;;; it under the terms of the GNU General Public License as published by
;;; the Free Software Foundation, either version 3 of the License, or
;;; (at your option) any later version.
;;;
;;; 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/>.
;; C parser
(define-module (nyacc lang c99 xparser)
#:export (parse-c99x)
#:use-module (nyacc lex)
#:use-module (nyacc parse)
#:use-module (nyacc lang util)
#:use-module (nyacc lang c99 cpp)
#:use-module ((srfi srfi-9) #:select (define-record-type))
#:use-module ((sxml xpath) #:select (sxpath))
)
(include-from-path "nyacc/lang/c99/mach.d/c99xtab.scm")
(include-from-path "nyacc/lang/c99/body.scm")
(include-from-path "nyacc/lang/c99/mach.d/c99xact.scm")
;; Parse given a token generator. Uses fluid @code{*info*}.
(define c99x-raw-parser
(let ((parser (make-lalr-parser
(list (cons 'len-v c99x-len-v) (cons 'pat-v c99x-pat-v)
(cons 'rto-v c99x-rto-v) (cons 'mtab c99x-mtab)
(cons 'act-v c99x-act-v)))))
(lambda* (lexer #:key (debug #f))
(catch
'nyacc-error
(lambda () (parser lexer #:debug debug))
(lambda (key fmt . args)
(report-error fmt args)
(pop-input) ; not sure this is right
(throw 'c99-error "C99 parse error"))))))
(define (c99x-run-parse)
(let ((info (fluid-ref *info*)))
(c99x-raw-parser (gen-c-lexer) #:debug (cpi-debug info))))
;; @item {Procedure} parse-c99x [#:cpp-defs defs] [#:debug bool]
;; This needs to be explained in some detail.
;; [#:tyns '("foo_t")]
(define* (parse-c99x expr-string
#:key
(cpp-defs '()) ; CPP defines
(inc-help '()) ; include helper
(xdef? #f) ; pred to determine expand
(debug #f) ; debug?
(tyns '())) ; defined typenames
(with-input-from-string expr-string
(lambda ()
(catch
'c99-error
(lambda ()
(let ((info (make-cpi debug cpp-defs '(".") inc-help)))
(set-cpi-ptl! info (cons tyns (cpi-ptl info)))
(with-fluid*
*info* info
(lambda ()
(c99x-raw-parser (gen-c-lexer #:mode 'code #:xdef? xdef?)
#:debug debug)))))
(lambda (key fmt . rest)
(report-error fmt rest)
#f)))))
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