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scm-frame-args.scm revision 1.1.1.4 
      1 ;; Copyright (C) 2014-2019 Free Software Foundation, Inc.
      2 ;;
      3 ;; This program is free software; you can redistribute it and/or modify
      4 ;; it under the terms of the GNU General Public License as published by
      5 ;; the Free Software Foundation; either version 3 of the License, or
      6 ;; (at your option) any later version.
      7 ;;
      8 ;; This program is distributed in the hope that it will be useful,
      9 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
     10 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     11 ;; GNU General Public License for more details.
     12 ;;
     13 ;; You should have received a copy of the GNU General Public License
     14 ;; along with this program.  If not, see <http://www.gnu.org/licenses/>.
     15 
     16 (use-modules (gdb) (gdb printing))
     17 
     18 (define (make-pp_s-printer val)
     19   (make-pretty-printer-worker
     20    #f
     21    (lambda (printer)
     22      (let ((m (value-field val "m")))
     23        (format #f "m=<~A>" m)))
     24    #f))
     25 
     26 (define (make-pp_ss-printer val)
     27   (make-pretty-printer-worker
     28    #f
     29    (lambda (printer) "super struct")
     30    (lambda (printer)
     31      (make-iterator val
     32 		    (make-field-iterator (value-type val))
     33 		    (lambda (iter)
     34 		      (let ((field (iterator-next!
     35 				    (iterator-progress iter))))
     36 			(if (end-of-iteration? field)
     37 			    field
     38 			    (let ((name (field-name field)))
     39 			      (cons name (value-field val name))))))))))
     40 
     41 (define (get-type-for-printing val)
     42   "Return type of val, stripping away typedefs, etc."
     43   (let ((type (value-type val)))
     44     (if (= (type-code type) TYPE_CODE_REF)
     45 	(set! type (type-target type)))
     46     (type-strip-typedefs (type-unqualified type))))
     47 
     48 (define (make-pretty-printer-dict)
     49   (let ((dict (make-hash-table)))
     50     (hash-set! dict "struct s" make-pp_s-printer)
     51     (hash-set! dict "s" make-pp_s-printer)
     52     (hash-set! dict "struct ss" make-pp_ss-printer)
     53     (hash-set! dict "ss" make-pp_ss-printer)
     54     dict))
     55 
     56 (define *pretty-printer*
     57  (make-pretty-printer
     58   "pretty-printer-test"
     59   (let ((pretty-printers-dict (make-pretty-printer-dict)))
     60     (lambda (matcher val)
     61       "Look-up and return a pretty-printer that can print val."
     62       (let ((type (get-type-for-printing val)))
     63 	(let ((typename (type-tag type)))
     64 	  (if typename
     65 	      (let ((printer-maker (hash-ref pretty-printers-dict typename)))
     66 		(and printer-maker (printer-maker val)))
     67 	      #f)))))))
     68 
     69 (append-pretty-printer! #f *pretty-printer*)
     70