gdb/testsuite/gdb.guile/scm-section-script.scm

   1 ;; Copyright (C) 2010-2016 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 ;; This file is part of the GDB testsuite.
  17
  18 (use-modules (gdb) (gdb printing))
  19
  20 (define (make-pp_ss-printer val)
  21   (make-pretty-printer-worker
  22    #f
  23    (lambda (printer)
  24      (let ((a (value-field val "a"))
  25            (b (value-field val "b")))
  26        (format #f "a=<~A> b=<~A>" a b)))
  27    #f))
  28
  29 (define (get-type-for-printing val)
  30   "Return type of val, stripping away typedefs, etc."
  31   (let ((type (value-type val)))
  32     (if (= (type-code type) TYPE_CODE_REF)
  33         (set! type (type-target type)))
  34     (type-strip-typedefs (type-unqualified type))))
  35
  36 (define (make-pretty-printer-dict)
  37   (let ((dict (make-hash-table)))
  38     (hash-set! dict "struct ss" make-pp_ss-printer)
  39     (hash-set! dict "ss" make-pp_ss-printer)
  40     dict))
  41
  42 (define *pretty-printer*
  43  (make-pretty-printer
  44   "pretty-printer-test"
  45   (let ((pretty-printers-dict (make-pretty-printer-dict)))
  46     (lambda (matcher val)
  47       "Look-up and return a pretty-printer that can print val."
  48       (let ((type (get-type-for-printing val)))
  49         (let ((typename (type-tag type)))
  50           (if typename
  51               (let ((printer-maker (hash-ref pretty-printers-dict typename)))
  52                 (and printer-maker (printer-maker val)))
  53               #f)))))))
  54
  55 (append-pretty-printer! #f *pretty-printer*)