1# Copyright (C) 2013-2017 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 16import re 17import gdb 18 19class pp_s (object): 20 def __init__(self, val): 21 self.val = val 22 23 def to_string(self): 24 m = self.val["m"] 25 return "m=<" + str(self.val["m"]) + ">" 26 27class pp_ss (object): 28 def __init__(self, val): 29 self.val = val 30 31 def to_string(self): 32 return "super struct" 33 34 def children (self): 35 yield 'a', self.val['a'] 36 yield 'b', self.val['b'] 37 38 39def lookup_function (val): 40 "Look-up and return a pretty-printer that can print val." 41 42 # Get the type. 43 type = val.type 44 45 # If it points to a reference, get the reference. 46 if type.code == gdb.TYPE_CODE_REF: 47 type = type.target () 48 49 # Get the unqualified type, stripped of typedefs. 50 type = type.unqualified ().strip_typedefs () 51 52 # Get the type name. 53 typename = type.tag 54 if typename == None: 55 return None 56 57 # Iterate over local dictionary of types to determine 58 # if a printer is registered for that type. Return an 59 # instantiation of the printer if found. 60 for function in pretty_printers_dict: 61 if function.match (typename): 62 return pretty_printers_dict[function] (val) 63 64 # Cannot find a pretty printer. Return None. 65 return None 66 67 68def register_pretty_printers (): 69 pretty_printers_dict[re.compile ('^s$')] = pp_s 70 pretty_printers_dict[re.compile ('^ss$')] = pp_ss 71 72pretty_printers_dict = {} 73 74register_pretty_printers () 75gdb.pretty_printers.append (lookup_function) 76