1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
|
# Copyright (C) 2019-2020 Free Software Foundation, Inc.
# 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/>.
# This file is part of the GDB testsuite. It tests GDB's printing of
# nested map like structures.
import re
import gdb
def _iterator1 (pointer, len):
while len > 0:
map = pointer.dereference()
yield ('', map['name'])
yield ('', map.dereference())
pointer += 1
len -= 1
def _iterator2 (pointer1, pointer2, len):
while len > 0:
yield ("", pointer1.dereference())
yield ("", pointer2.dereference())
pointer1 += 1
pointer2 += 1
len -= 1
class pp_map (object):
def __init__(self, val):
self.val = val
def to_string(self):
if (self.val['show_header'] == 0):
return None
else:
return "pp_map"
def children(self):
return _iterator2(self.val['keys'],
self.val['values'],
self.val['length'])
def display_hint (self):
return 'map'
class pp_map_map (object):
def __init__(self, val):
self.val = val
def to_string(self):
if (self.val['show_header'] == 0):
return None
else:
return "pp_map_map"
def children(self):
return _iterator1(self.val['values'],
self.val['length'])
def display_hint (self):
return 'map'
def lookup_function (val):
"Look-up and return a pretty-printer that can print val."
# Get the type.
type = val.type
# If it points to a reference, get the reference.
if type.code == gdb.TYPE_CODE_REF:
type = type.target ()
# Get the unqualified type, stripped of typedefs.
type = type.unqualified ().strip_typedefs ()
# Get the type name.
typename = type.tag
if typename == None:
return None
# Iterate over local dictionary of types to determine
# if a printer is registered for that type. Return an
# instantiation of the printer if found.
for function in pretty_printers_dict:
if function.match (typename):
return pretty_printers_dict[function] (val)
# Cannot find a pretty printer. Return None.
return None
# Lookup a printer for VAL in the typedefs dict.
def lookup_typedefs_function (val):
"Look-up and return a pretty-printer that can print val (typedefs)."
# Get the type.
type = val.type
if type == None or type.name == None or type.code != gdb.TYPE_CODE_TYPEDEF:
return None
# Iterate over local dictionary of typedef types to determine if a
# printer is registered for that type. Return an instantiation of
# the printer if found.
for function in typedefs_pretty_printers_dict:
if function.match (type.name):
return typedefs_pretty_printers_dict[function] (val)
# Cannot find a pretty printer.
return None
def register_pretty_printers ():
pretty_printers_dict[re.compile ('^struct map_t$')] = pp_map
pretty_printers_dict[re.compile ('^map_t$')] = pp_map
pretty_printers_dict[re.compile ('^struct map_map_t$')] = pp_map_map
pretty_printers_dict[re.compile ('^map_map_t$')] = pp_map_map
# Dict for struct types with typedefs fully stripped.
pretty_printers_dict = {}
# Dict for typedef types.
typedefs_pretty_printers_dict = {}
register_pretty_printers ()
gdb.pretty_printers.append (lookup_function)
gdb.pretty_printers.append (lookup_typedefs_function)
|
