;;; nyacc/lang/c99/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 parser)
  #:export (parse-c parse-c99 def-xdef? std-dict)
  #: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))
  )

(cond-expand
 (guile-2)
 (guile
  (use-modules (ice-9 syncase))
  (use-modules (ice-9 optargs)))
 (mes))

(include-from-path "nyacc/lang/c99/mach.d/c99tab.scm")
(include-from-path "nyacc/lang/c99/body.scm")
(include-from-path "nyacc/lang/c99/mach.d/c99act.scm")

;; Parse given a token generator.  Uses fluid @code{*info*}.
(define raw-parser
  (make-lalr-parser 
   (list
    (cons 'len-v len-v)
    (cons 'pat-v pat-v)
    (cons 'rto-v rto-v)
    (cons 'mtab mtab)
    (cons 'act-v act-v))))

(define* (my-c-lexer #:key (mode 'file) (xdef? #f))
  (let ((def-lxr (gen-c-lexer #:mode mode #:xdef? xdef?)))
    (lambda ()
      (let ((tok (def-lxr)))
	;;(simple-format #t "~S\n" tok)
	tok))))

(define (run-parse)
  (let ((info (fluid-ref *info*)))
    ;;(raw-parser (gen-c-lexer) #:debug (cpi-debug info))))
    (raw-parser (my-c-lexer) #:debug (cpi-debug info))))

;; @item parse-c [#:cpp-defs def-a-list] [#:inc-dirs dir-list] [#:debug bool] \
;;               [#:mode ('code|'file)]
;; This needs to be explained in some detail.
;; tdd = typedef dict: (("<time>" time_t) ... ("<unistd.h>" ...))
(define* (parse-c99 #:key
		    (cpp-defs '())	; CPP defines
		    (inc-dirs '())	; include dirs
		    (td-dict '())	; typedef dictionary
		    (mode 'file)	; mdoe: 'file or 'code
		    (xdef? #f)		; pred to determine expand
		    (debug #f))		; debug
  (catch
   'parse-error
   (lambda ()
     (let ((info (make-cpi debug cpp-defs (cons "." inc-dirs) td-dict)))
       (with-fluid*
	   *info* info
	   (lambda ()
	     (raw-parser (my-c-lexer #:mode mode #:xdef? xdef?)
			 #:debug debug)))))
   (lambda (key fmt . rest)
     (apply simple-format (current-error-port) (string-append fmt "\n") rest)
     #f)))

(define parse-c parse-c99)

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