gdb/testsuite/gdb.guile/scm-frame-args.scm

   1 ;; Copyright (C) 2014-2021 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*)