2960a434c3
exception. (_iterator_except): New function. (ArrayPrinter): Use _iterator function instead of local _iterator class for Python 3 compatibility. (NoStringContainerPrinter): Use _iterator_except instead of _iterator. * gdb.python/py-typeprint.exp: Use exec(open(...).read()) instead of execfile for Python 3 compatibility. * gdb.python/python.exp: Handle Python 2.4 exception traceback format in error_prompt test.
305 lines
8.9 KiB
Python
305 lines
8.9 KiB
Python
# Copyright (C) 2008-2012 Free Software Foundation, Inc.
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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# This file is part of the GDB testsuite. It tests python pretty
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# printers.
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import re
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import gdb
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def _iterator (pointer, len):
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start = pointer
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end = pointer + len
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while pointer != end:
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yield ('[%d]' % int (pointer - start), pointer.dereference())
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pointer += 1
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# Same as _iterator but can be told to raise an exception.
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def _iterator_except (pointer, len):
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start = pointer
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end = pointer + len
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while pointer != end:
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if exception_flag:
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raise gdb.MemoryError ('hi bob')
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yield ('[%d]' % int (pointer - start), pointer.dereference())
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pointer += 1
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# Test returning a Value from a printer.
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class string_print (object):
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def __init__(self, val):
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self.val = val
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def to_string(self):
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return self.val['whybother']['contents']
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# Test a class-based printer.
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class ContainerPrinter (object):
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def __init__(self, val):
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self.val = val
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def to_string(self):
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return 'container %s with %d elements' % (self.val['name'], self.val['len'])
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def children(self):
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return _iterator(self.val['elements'], self.val['len'])
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# Treats a container as array.
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class ArrayPrinter (object):
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def __init__(self, val):
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self.val = val
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def to_string(self):
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return 'array %s with %d elements' % (self.val['name'], self.val['len'])
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def children(self):
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return _iterator(self.val['elements'], self.val['len'])
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def display_hint (self):
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return 'array'
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# Flag to make NoStringContainerPrinter throw an exception.
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exception_flag = False
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# Test a printer where to_string is None
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class NoStringContainerPrinter (object):
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def __init__(self, val):
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self.val = val
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def to_string(self):
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return None
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def children(self):
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return _iterator_except (self.val['elements'], self.val['len'])
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class pp_s (object):
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def __init__(self, val):
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self.val = val
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def to_string(self):
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a = self.val["a"]
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b = self.val["b"]
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if a.address != b:
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raise Exception("&a(%s) != b(%s)" % (str(a.address), str(b)))
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return " a=<" + str(self.val["a"]) + "> b=<" + str(self.val["b"]) + ">"
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class pp_ss (object):
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def __init__(self, val):
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self.val = val
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def to_string(self):
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return "a=<" + str(self.val["a"]) + "> b=<" + str(self.val["b"]) + ">"
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class pp_sss (object):
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def __init__(self, val):
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self.val = val
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def to_string(self):
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return "a=<" + str(self.val['a']) + "> b=<" + str(self.val["b"]) + ">"
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class pp_multiple_virtual (object):
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def __init__ (self, val):
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self.val = val
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def to_string (self):
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return "pp value variable is: " + str (self.val['value'])
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class pp_vbase1 (object):
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def __init__ (self, val):
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self.val = val
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def to_string (self):
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return "pp class name: " + self.val.type.tag
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class pp_nullstr (object):
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def __init__(self, val):
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self.val = val
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def to_string(self):
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return self.val['s'].string(gdb.target_charset())
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class pp_ns (object):
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"Print a std::basic_string of some kind"
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def __init__(self, val):
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self.val = val
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def to_string(self):
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len = self.val['length']
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return self.val['null_str'].string (gdb.target_charset(), length = len)
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def display_hint (self):
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return 'string'
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pp_ls_encoding = None
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class pp_ls (object):
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"Print a std::basic_string of some kind"
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def __init__(self, val):
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self.val = val
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def to_string(self):
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if pp_ls_encoding is not None:
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return self.val['lazy_str'].lazy_string(encoding = pp_ls_encoding)
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else:
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return self.val['lazy_str'].lazy_string()
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def display_hint (self):
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return 'string'
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class pp_hint_error (object):
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"Throw error from display_hint"
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def __init__(self, val):
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self.val = val
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def to_string(self):
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return 'hint_error_val'
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def display_hint (self):
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raise Exception("hint failed")
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class pp_children_as_list (object):
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"Throw error from display_hint"
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def __init__(self, val):
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self.val = val
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def to_string(self):
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return 'children_as_list_val'
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def children (self):
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return [('one', 1)]
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class pp_outer (object):
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"Print struct outer"
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def __init__ (self, val):
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self.val = val
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def to_string (self):
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return "x = %s" % self.val['x']
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def children (self):
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yield 's', self.val['s']
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yield 'x', self.val['x']
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class MemoryErrorString (object):
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"Raise an error"
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def __init__(self, val):
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self.val = val
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def to_string(self):
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raise gdb.MemoryError ("Cannot access memory.")
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def display_hint (self):
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return 'string'
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class pp_eval_type (object):
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def __init__(self, val):
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self.val = val
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def to_string(self):
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gdb.execute("bt", to_string=True)
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return "eval=<" + str(gdb.parse_and_eval("eval_func (123456789, 2, 3, 4, 5, 6, 7, 8)")) + ">"
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def lookup_function (val):
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"Look-up and return a pretty-printer that can print val."
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# Get the type.
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type = val.type
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# If it points to a reference, get the reference.
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if type.code == gdb.TYPE_CODE_REF:
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type = type.target ()
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# Get the unqualified type, stripped of typedefs.
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type = type.unqualified ().strip_typedefs ()
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# Get the type name.
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typename = type.tag
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if typename == None:
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return None
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# Iterate over local dictionary of types to determine
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# if a printer is registered for that type. Return an
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# instantiation of the printer if found.
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for function in pretty_printers_dict:
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if function.match (typename):
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return pretty_printers_dict[function] (val)
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# Cannot find a pretty printer. Return None.
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return None
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def disable_lookup_function ():
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lookup_function.enabled = False
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def enable_lookup_function ():
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lookup_function.enabled = True
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def register_pretty_printers ():
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pretty_printers_dict[re.compile ('^struct s$')] = pp_s
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pretty_printers_dict[re.compile ('^s$')] = pp_s
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pretty_printers_dict[re.compile ('^S$')] = pp_s
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pretty_printers_dict[re.compile ('^struct ss$')] = pp_ss
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pretty_printers_dict[re.compile ('^ss$')] = pp_ss
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pretty_printers_dict[re.compile ('^const S &$')] = pp_s
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pretty_printers_dict[re.compile ('^SSS$')] = pp_sss
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pretty_printers_dict[re.compile ('^VirtualTest$')] = pp_multiple_virtual
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pretty_printers_dict[re.compile ('^Vbase1$')] = pp_vbase1
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pretty_printers_dict[re.compile ('^struct nullstr$')] = pp_nullstr
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pretty_printers_dict[re.compile ('^nullstr$')] = pp_nullstr
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# Note that we purposely omit the typedef names here.
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# Printer lookup is based on canonical name.
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# However, we do need both tagged and untagged variants, to handle
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# both the C and C++ cases.
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pretty_printers_dict[re.compile ('^struct string_repr$')] = string_print
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pretty_printers_dict[re.compile ('^struct container$')] = ContainerPrinter
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pretty_printers_dict[re.compile ('^struct justchildren$')] = NoStringContainerPrinter
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pretty_printers_dict[re.compile ('^string_repr$')] = string_print
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pretty_printers_dict[re.compile ('^container$')] = ContainerPrinter
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pretty_printers_dict[re.compile ('^justchildren$')] = NoStringContainerPrinter
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pretty_printers_dict[re.compile ('^struct ns$')] = pp_ns
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pretty_printers_dict[re.compile ('^ns$')] = pp_ns
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pretty_printers_dict[re.compile ('^struct lazystring$')] = pp_ls
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pretty_printers_dict[re.compile ('^lazystring$')] = pp_ls
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pretty_printers_dict[re.compile ('^struct outerstruct$')] = pp_outer
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pretty_printers_dict[re.compile ('^outerstruct$')] = pp_outer
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pretty_printers_dict[re.compile ('^struct hint_error$')] = pp_hint_error
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pretty_printers_dict[re.compile ('^hint_error$')] = pp_hint_error
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pretty_printers_dict[re.compile ('^struct children_as_list$')] = pp_children_as_list
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pretty_printers_dict[re.compile ('^children_as_list$')] = pp_children_as_list
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pretty_printers_dict[re.compile ('^memory_error$')] = MemoryErrorString
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pretty_printers_dict[re.compile ('^eval_type_s$')] = pp_eval_type
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pretty_printers_dict = {}
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register_pretty_printers ()
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gdb.pretty_printers.append (lookup_function)
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