131 lines
3.3 KiB
Python
131 lines
3.3 KiB
Python
# -*- tab-width: 4; indent-tabs-mode: nil; py-indent-offset: 4 -*-
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# librevenge
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# Version: MPL 2.0 / LGPLv2.1+
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#
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# This Source Code Form is subject to the terms of the Mozilla Public
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# License, v. 2.0. If a copy of the MPL was not distributed with this
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# file, You can obtain one at http://mozilla.org/MPL/2.0/.
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#
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# Alternatively, the contents of this file may be used under the terms
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# of the GNU Lesser General Public License Version 2.1 or later
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# (LGPLv2.1+), in which case the provisions of the LGPLv2.1+ are
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# applicable instead of those above.
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#
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# Printer interface adaptor.
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from collections import Mapping
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import gdb
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import re
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from six import iteritems
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from librevenge.util.compatibility import use_gdb_printing
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class SimplePrinter(object):
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def __init__(self, name, function):
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self.name = name
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self.function = function
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self.enabled = True
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def invoke(self, val):
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if not self.enabled:
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return None
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return self.function(self.name, val)
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class NameLookup(Mapping):
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def __init__(self):
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self.map = {}
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self.name_regex = re.compile('^([\w:]+)(<.*>)?')
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def add(self, name, printer):
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self.map[name] = printer
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def __len__(self):
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return len(self.map)
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def __getitem__(self, type):
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typename = self._basic_type(type)
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if typename and typename in self.map:
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return self.map[typename]
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return None
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def __iter__(self):
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return self.map
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def _basic_type(self, type):
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basic_type = self.basic_type(type)
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if basic_type:
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match = self.name_regex.match(basic_type)
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if match:
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return match.group(1)
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return None
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@staticmethod
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def basic_type(type):
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if type.code == gdb.TYPE_CODE_REF:
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type = type.target()
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type = type.unqualified().strip_typedefs()
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return type.tag
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class FunctionLookup(Mapping):
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def __init__(self):
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self.map = {}
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def add(self, test, printer):
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self.map[test] = printer
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def __len__(self):
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return len(self.map)
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def __getitem__(self, type):
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for (test, printer) in iteritems(self.map):
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if test(type):
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return printer
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return None
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def __iter__(self):
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return self.map
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class Printer(object):
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def __init__(self, name):
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self.name = name
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self.subprinters = []
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self.name_lookup = NameLookup()
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self.func_lookup = FunctionLookup()
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self.enabled = True
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def add(self, name, function, lookup = None):
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printer = SimplePrinter(name, function)
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self.subprinters.append(printer)
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if not lookup:
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self.name_lookup.add(name, printer)
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else:
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self.func_lookup.add(lookup, printer)
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def __call__(self, val):
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printer = self.name_lookup[val.type]
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if not printer:
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printer = self.func_lookup[val.type]
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if printer:
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return printer.invoke(val)
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return None
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def register_pretty_printer(printer, obj):
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'''Registers printer with objfile'''
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if use_gdb_printing:
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gdb.printing.register_pretty_printer(obj, printer)
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else:
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if obj is None:
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obj = gdb
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obj.pretty_printers.append(printer)
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# vim:set filetype=python shiftwidth=4 softtabstop=4 expandtab:
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