152 lines
4.7 KiB
Python
152 lines
4.7 KiB
Python
# Copyright (C) 2008, 2009 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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# Test returning a Value from a printer.
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class string_print:
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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:
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class _iterator:
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def __init__ (self, pointer, len):
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self.start = pointer
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self.pointer = pointer
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self.end = pointer + len
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def __iter__(self):
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return self
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def next(self):
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if self.pointer == self.end:
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raise StopIteration
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result = self.pointer
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self.pointer = self.pointer + 1
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return ('[%d]' % int (result - self.start), result.dereference())
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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 self._iterator(self.val['elements'], self.val['len'])
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class pp_s:
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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:
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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:
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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:
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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:
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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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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 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$')] = pp_vbase1
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# Note that we purposely omit the typedef names here.
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# Printer lookup is based on canonical name.
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# However, we do need both tagged and untagged variants, to handle
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# both the C and C++ cases.
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pretty_printers_dict[re.compile ('^struct string_repr$')] = string_print
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pretty_printers_dict[re.compile ('^struct container$')] = ContainerPrinter
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pretty_printers_dict[re.compile ('^string_repr$')] = string_print
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pretty_printers_dict[re.compile ('^container$')] = ContainerPrinter
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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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