Permalink
Switch branches/tags
Nothing to show
Find file
Fetching contributors…
Cannot retrieve contributors at this time
243 lines (180 sloc) 7.17 KB
# Copyright (C) 2008, 2009, 2010 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 python pretty
# printers.
import re
# Test returning a Value from a printer.
class string_print:
def __init__(self, val):
self.val = val
def to_string(self):
return self.val['whybother']['contents']
# Test a class-based printer.
class ContainerPrinter:
class _iterator:
def __init__ (self, pointer, len):
self.start = pointer
self.pointer = pointer
self.end = pointer + len
def __iter__(self):
return self
def next(self):
if self.pointer == self.end:
raise StopIteration
result = self.pointer
self.pointer = self.pointer + 1
return ('[%d]' % int (result - self.start), result.dereference())
def __init__(self, val):
self.val = val
def to_string(self):
return 'container %s with %d elements' % (self.val['name'], self.val['len'])
def children(self):
return self._iterator(self.val['elements'], self.val['len'])
# Test a printer where to_string is None
class NoStringContainerPrinter:
class _iterator:
def __init__ (self, pointer, len):
self.start = pointer
self.pointer = pointer
self.end = pointer + len
def __iter__(self):
return self
def next(self):
if self.pointer == self.end:
raise StopIteration
result = self.pointer
self.pointer = self.pointer + 1
return ('[%d]' % int (result - self.start), result.dereference())
def __init__(self, val):
self.val = val
def to_string(self):
return None
def children(self):
return self._iterator(self.val['elements'], self.val['len'])
class pp_s:
def __init__(self, val):
self.val = val
def to_string(self):
a = self.val["a"]
b = self.val["b"]
if a.address != b:
raise Exception("&a(%s) != b(%s)" % (str(a.address), str(b)))
return " a=<" + str(self.val["a"]) + "> b=<" + str(self.val["b"]) + ">"
class pp_ss:
def __init__(self, val):
self.val = val
def to_string(self):
return "a=<" + str(self.val["a"]) + "> b=<" + str(self.val["b"]) + ">"
class pp_sss:
def __init__(self, val):
self.val = val
def to_string(self):
return "a=<" + str(self.val['a']) + "> b=<" + str(self.val["b"]) + ">"
class pp_multiple_virtual:
def __init__ (self, val):
self.val = val
def to_string (self):
return "pp value variable is: " + str (self.val['value'])
class pp_vbase1:
def __init__ (self, val):
self.val = val
def to_string (self):
return "pp class name: " + self.val.type.tag
class pp_nullstr:
def __init__(self, val):
self.val = val
def to_string(self):
return self.val['s'].string(gdb.target_charset())
class pp_ns:
"Print a std::basic_string of some kind"
def __init__(self, val):
self.val = val
def to_string(self):
len = self.val['length']
return self.val['null_str'].string (gdb.target_charset(), length = len)
def display_hint (self):
return 'string'
class pp_ls:
"Print a std::basic_string of some kind"
def __init__(self, val):
self.val = val
def to_string(self):
return self.val['lazy_str'].lazy_string()
def display_hint (self):
return 'string'
class pp_outer:
"Print struct outer"
def __init__ (self, val):
self.val = val
def to_string (self):
return "x = %s" % self.val['x']
def children (self):
yield 's', self.val['s']
yield 'x', self.val['x']
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
def disable_lookup_function ():
lookup_function.enabled = False
def enable_lookup_function ():
lookup_function.enabled = True
def register_pretty_printers ():
pretty_printers_dict[re.compile ('^struct s$')] = pp_s
pretty_printers_dict[re.compile ('^s$')] = pp_s
pretty_printers_dict[re.compile ('^S$')] = pp_s
pretty_printers_dict[re.compile ('^struct ss$')] = pp_ss
pretty_printers_dict[re.compile ('^ss$')] = pp_ss
pretty_printers_dict[re.compile ('^const S &$')] = pp_s
pretty_printers_dict[re.compile ('^SSS$')] = pp_sss
pretty_printers_dict[re.compile ('^VirtualTest$')] = pp_multiple_virtual
pretty_printers_dict[re.compile ('^Vbase1$')] = pp_vbase1
pretty_printers_dict[re.compile ('^struct nullstr$')] = pp_nullstr
pretty_printers_dict[re.compile ('^nullstr$')] = pp_nullstr
# Note that we purposely omit the typedef names here.
# Printer lookup is based on canonical name.
# However, we do need both tagged and untagged variants, to handle
# both the C and C++ cases.
pretty_printers_dict[re.compile ('^struct string_repr$')] = string_print
pretty_printers_dict[re.compile ('^struct container$')] = ContainerPrinter
pretty_printers_dict[re.compile ('^struct justchildren$')] = NoStringContainerPrinter
pretty_printers_dict[re.compile ('^string_repr$')] = string_print
pretty_printers_dict[re.compile ('^container$')] = ContainerPrinter
pretty_printers_dict[re.compile ('^justchildren$')] = NoStringContainerPrinter
pretty_printers_dict[re.compile ('^struct ns$')] = pp_ns
pretty_printers_dict[re.compile ('^ns$')] = pp_ns
pretty_printers_dict[re.compile ('^struct lazystring$')] = pp_ls
pretty_printers_dict[re.compile ('^lazystring$')] = pp_ls
pretty_printers_dict[re.compile ('^struct outerstruct$')] = pp_outer
pretty_printers_dict[re.compile ('^outerstruct$')] = pp_outer
pretty_printers_dict = {}
register_pretty_printers ()
gdb.pretty_printers.append (lookup_function)