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9ebe2f9de7
gcc/gcc8-libstdc++-prettyprinter-update-14.patch
Siddhesh Poyarekar 9ebe2f9de7 Update libstdc++ pretty printer from latest GTS version 
Also add a script that makes the update more convenient in future.

Resolves: RHEL-50290
2025-03-04 15:20:28 -05:00

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libstdc++-v3/python/libstdcxx/v6/__init__.py | 4 +-
libstdc++-v3/python/libstdcxx/v6/printers.py | 2593 +++++++++++++++++++-------
libstdc++-v3/python/libstdcxx/v6/xmethods.py | 170 +-
3 files changed, 2017 insertions(+), 750 deletions(-)
diff --git a/libstdc++-v3/python/libstdcxx/v6/__init__.py b/libstdc++-v3/python/libstdcxx/v6/__init__.py
index b001c8520b6..f40acd922af 100644
--- a/libstdc++-v3/python/libstdcxx/v6/__init__.py
+++ b/libstdc++-v3/python/libstdcxx/v6/__init__.py
@@ -1,4 +1,4 @@
-# Copyright (C) 2014-2018 Free Software Foundation, Inc.
+# Copyright (C) 2014-2024 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
@@ -13,8 +13,6 @@
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
-import gdb
-
# Load the xmethods if GDB supports them.
def gdb_has_xmethods():
try:
diff --git a/libstdc++-v3/python/libstdcxx/v6/printers.py b/libstdc++-v3/python/libstdcxx/v6/printers.py
index ba9bbc096a0..3026de35bbd 100644
--- a/libstdc++-v3/python/libstdcxx/v6/printers.py
+++ b/libstdc++-v3/python/libstdcxx/v6/printers.py
@@ -1,6 +1,6 @@
# Pretty-printers for libstdc++.
-# Copyright (C) 2008-2018 Free Software Foundation, Inc.
+# Copyright (C) 2008-2024 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
@@ -19,8 +19,10 @@ import gdb
import itertools
import re
import sys
+import errno
+import datetime
-### Python 2 + Python 3 compatibility code
+# Python 2 + Python 3 compatibility code
# Resources about compatibility:
#
@@ -37,15 +39,16 @@ import sys
# <https://sourceware.org/bugzilla/show_bug.cgi?id=17138>
if sys.version_info[0] > 2:
- ### Python 3 stuff
+ # Python 3 stuff
Iterator = object
# Python 3 folds these into the normal functions.
imap = map
izip = zip
# Also, int subsumes long
long = int
+ _utc_timezone = datetime.timezone.utc
else:
- ### Python 2 stuff
+ # Python 2 stuff
class Iterator:
"""Compatibility mixin for iterators
@@ -63,6 +66,20 @@ else:
# In Python 2, we still need these from itertools
from itertools import imap, izip
+ # Python 2 does not provide the datetime.UTC singleton.
+ class UTC(datetime.tzinfo):
+ """Concrete tzinfo class representing the UTC time zone."""
+
+ def utcoffset(self, dt):
+ return datetime.timedelta(0)
+
+ def tzname(self, dt):
+ return "UTC"
+
+ def dst(self, dt):
+ return datetime.timedelta(0)
+ _utc_timezone = UTC()
+
# Try to use the new-style pretty-printing if available.
_use_gdb_pp = True
try:
@@ -79,14 +96,22 @@ try:
except ImportError:
pass
+# Use the base class if available.
+if hasattr(gdb, 'ValuePrinter'):
+ printer_base = gdb.ValuePrinter
+else:
+ printer_base = object
+
# Starting with the type ORIG, search for the member type NAME. This
# handles searching upward through superclasses. This is needed to
# work around http://sourceware.org/bugzilla/show_bug.cgi?id=13615.
+
+
def find_type(orig, name):
typ = orig.strip_typedefs()
while True:
- # Strip cv-qualifiers. PR 67440.
- search = '%s::%s' % (typ.unqualified(), name)
+ # Use Type.tag to ignore cv-qualifiers. PR 67440.
+ search = '%s::%s' % (typ.tag, name)
try:
return gdb.lookup_type(search)
except RuntimeError:
@@ -94,39 +119,131 @@ def find_type(orig, name):
# The type was not found, so try the superclass. We only need
# to check the first superclass, so we don't bother with
# anything fancier here.
- field = typ.fields()[0]
- if not field.is_base_class:
+ fields = typ.fields()
+ if len(fields) and fields[0].is_base_class:
+ typ = fields[0].type
+ else:
raise ValueError("Cannot find type %s::%s" % (str(orig), name))
- typ = field.type
+
_versioned_namespace = '__8::'
-def is_specialization_of(type, template_name):
- "Test if a type is a given template instantiation."
+
+def lookup_templ_spec(templ, *args):
+ """
+ Lookup template specialization templ<args...>.
+ """
+ t = '{}<{}>'.format(templ, ', '.join([str(a) for a in args]))
+ try:
+ return gdb.lookup_type(t)
+ except gdb.error as e:
+ # Type not found, try again in versioned namespace.
+ global _versioned_namespace
+ if _versioned_namespace not in templ:
+ t = t.replace('::', '::' + _versioned_namespace, 1)
+ try:
+ return gdb.lookup_type(t)
+ except gdb.error:
+ # If that also fails, rethrow the original exception
+ pass
+ raise e
+
+# Use this to find container node types instead of find_type,
+# see https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91997 for details.
+def lookup_node_type(nodename, containertype):
+ """
+ Lookup specialization of template nodename corresponding to containertype.
+
+ nodename - The name of a class template, as a String
+ containertype - The container, as a gdb.Type
+
+ Return a gdb.Type for the corresponding specialization of nodename,
+ or None if the type cannot be found.
+
+ e.g. lookup_node_type('_List_node', gdb.lookup_type('std::list<int>'))
+ will return a gdb.Type for the type std::_List_node<int>.
+ """
+ # If nodename is unqualified, assume it's in namespace std.
+ if '::' not in nodename:
+ nodename = 'std::' + nodename
+ # Use either containertype's value_type or its first template argument.
+ try:
+ valtype = find_type(containertype, 'value_type')
+ except:
+ valtype = containertype.template_argument(0)
+ valtype = valtype.strip_typedefs()
+ try:
+ return lookup_templ_spec(nodename, valtype)
+ except gdb.error:
+ # For debug mode containers the node is in std::__cxx1998.
+ if is_member_of_namespace(nodename, 'std'):
+ if is_member_of_namespace(containertype, 'std::__cxx1998',
+ 'std::__debug', '__gnu_debug'):
+ nodename = nodename.replace('::', '::__cxx1998::', 1)
+ try:
+ return lookup_templ_spec(nodename, valtype)
+ except gdb.error:
+ pass
+ return None
+
+
+def is_member_of_namespace(typ, *namespaces):
+ """
+ Test whether a type is a member of one of the specified namespaces.
+ The type can be specified as a string or a gdb.Type object.
+ """
+ if isinstance(typ, gdb.Type):
+ typ = str(typ)
+ typ = strip_versioned_namespace(typ)
+ for namespace in namespaces:
+ if typ.startswith(namespace + '::'):
+ return True
+ return False
+
+
+def is_specialization_of(x, template_name):
+ """
+ Test whether a type is a specialization of the named class template.
+ The type can be specified as a string or a gdb.Type object.
+ The template should be the name of a class template as a string,
+ without any 'std' qualification.
+ """
global _versioned_namespace
- if _versioned_namespace:
- return re.match('^std::(%s)?%s<.*>$' % (_versioned_namespace, template_name), type) is not None
- return re.match('^std::%s<.*>$' % template_name, type) is not None
+ if isinstance(x, gdb.Type):
+ x = x.tag
+ template_name = '(%s)?%s' % (_versioned_namespace, template_name)
+ return re.match('^std::%s<.*>$' % template_name, x) is not None
+
def strip_versioned_namespace(typename):
global _versioned_namespace
- if _versioned_namespace:
- return typename.replace(_versioned_namespace, '')
- return typename
+ return typename.replace(_versioned_namespace, '')
+
+
+def strip_fundts_namespace(typ):
+ """Remove "fundamentals_vN" inline namespace from qualified type name."""
+ pattern = r'^std::experimental::fundamentals_v\d::'
+ repl = 'std::experimental::'
+ if sys.version_info[0] == 2:
+ return re.sub(pattern, repl, typ, 1)
+ else: # Technically this needs Python 3.1 but nobody should be using 3.0
+ return re.sub(pattern, repl, typ, count=1)
+
def strip_inline_namespaces(type_str):
- "Remove known inline namespaces from the canonical name of a type."
+ """Remove known inline namespaces from the canonical name of a type."""
type_str = strip_versioned_namespace(type_str)
type_str = type_str.replace('std::__cxx11::', 'std::')
expt_ns = 'std::experimental::'
for lfts_ns in ('fundamentals_v1', 'fundamentals_v2'):
- type_str = type_str.replace(expt_ns+lfts_ns+'::', expt_ns)
+ type_str = type_str.replace(expt_ns + lfts_ns + '::', expt_ns)
fs_ns = expt_ns + 'filesystem::'
- type_str = type_str.replace(fs_ns+'v1::', fs_ns)
+ type_str = type_str.replace(fs_ns + 'v1::', fs_ns)
return type_str
+
def get_template_arg_list(type_obj):
- "Return a type's template arguments as a list"
+ """Return a type's template arguments as a list."""
n = 0
template_args = []
while True:
@@ -136,78 +253,140 @@ def get_template_arg_list(type_obj):
return template_args
n += 1
+
class SmartPtrIterator(Iterator):
- "An iterator for smart pointer types with a single 'child' value"
+ """An iterator for smart pointer types with a single 'child' value."""
def __init__(self, val):
- self.val = val
+ self._val = val
def __iter__(self):
return self
def __next__(self):
- if self.val is None:
+ if self._val is None:
raise StopIteration
- self.val, val = None, self.val
+ self._val, val = None, self._val
return ('get()', val)
-class SharedPointerPrinter:
- "Print a shared_ptr or weak_ptr"
- def __init__ (self, typename, val):
- self.typename = strip_versioned_namespace(typename)
- self.val = val
- self.pointer = val['_M_ptr']
+class SharedPointerPrinter(printer_base):
+ """
+ Print a shared_ptr, weak_ptr, atomic<shared_ptr>, or atomic<weak_ptr>.
+ """
+
+ def __init__(self, typename, val):
+ self._typename = strip_versioned_namespace(typename)
+ self._val = val
+ self._pointer = val['_M_ptr']
- def children (self):
- return SmartPtrIterator(self.pointer)
+ def children(self):
+ return SmartPtrIterator(self._pointer)
+
+ # Return the _Sp_counted_base<>* that holds the refcounts.
+ def _get_refcounts(self):
+ if self._typename == 'std::atomic':
+ # A tagged pointer is stored as uintptr_t.
+ ptr_val = self._val['_M_refcount']['_M_val']['_M_i']
+ ptr_val = ptr_val - (ptr_val % 2) # clear lock bit
+ ptr_type = find_type(self._val['_M_refcount'].type, 'pointer')
+ return ptr_val.cast(ptr_type)
+ return self._val['_M_refcount']['_M_pi']
- def to_string (self):
+ def to_string(self):
state = 'empty'
- refcounts = self.val['_M_refcount']['_M_pi']
+ refcounts = self._get_refcounts()
+ targ = self._val.type.template_argument(0)
+ targ = strip_versioned_namespace(str(targ))
+
if refcounts != 0:
usecount = refcounts['_M_use_count']
weakcount = refcounts['_M_weak_count']
if usecount == 0:
state = 'expired, weak count %d' % weakcount
else:
- state = 'use count %d, weak count %d' % (usecount, weakcount - 1)
- return '%s<%s> (%s)' % (self.typename, str(self.val.type.template_argument(0)), state)
-
-class UniquePointerPrinter:
- "Print a unique_ptr"
-
- def __init__ (self, typename, val):
- self.val = val
- impl_type = val.type.fields()[0].type.strip_typedefs()
- if is_specialization_of(str(impl_type), '__uniq_ptr_impl'): # New implementation
- tuple_member = val['_M_t']['_M_t']
- elif is_specialization_of(str(impl_type), 'tuple'):
- tuple_member = val['_M_t']
- else:
- raise ValueError("Unsupported implementation for unique_ptr: %s" % str(impl_type))
- tuple_impl_type = tuple_member.type.fields()[0].type # _Tuple_impl
- tuple_head_type = tuple_impl_type.fields()[1].type # _Head_base
- head_field = tuple_head_type.fields()[0]
- if head_field.name == '_M_head_impl':
- self.pointer = tuple_member['_M_head_impl']
- elif head_field.is_base_class:
- self.pointer = tuple_member.cast(head_field.type)
- else:
- raise ValueError("Unsupported implementation for tuple in unique_ptr: %s" % str(impl_type))
+ state = 'use count %d, weak count %d' % (
+ usecount, weakcount - 1)
+ return '%s<%s> (%s)' % (self._typename, targ, state)
+
+
+def _tuple_impl_get(val):
+ """Return the tuple element stored in a _Tuple_impl<N, T> base class."""
+ bases = val.type.fields()
+ if not bases[-1].is_base_class:
+ raise ValueError(
+ "Unsupported implementation for std::tuple: %s" % str(val.type))
+ # Get the _Head_base<N, T> base class:
+ head_base = val.cast(bases[-1].type)
+ fields = head_base.type.fields()
+ if len(fields) == 0:
+ raise ValueError(
+ "Unsupported implementation for std::tuple: %s" % str(val.type))
+ if fields[0].name == '_M_head_impl':
+ # The tuple element is the _Head_base::_M_head_impl data member.
+ return head_base['_M_head_impl']
+ elif fields[0].is_base_class:
+ # The tuple element is an empty base class of _Head_base.
+ # Cast to that empty base class.
+ return head_base.cast(fields[0].type)
+ else:
+ raise ValueError(
+ "Unsupported implementation for std::tuple: %s" % str(val.type))
+
+
+def tuple_get(n, val):
+ """Return the result of std::get<n>(val) on a std::tuple."""
+ tuple_size = len(get_template_arg_list(val.type))
+ if n > tuple_size:
+ raise ValueError("Out of range index for std::get<N> on std::tuple")
+ # Get the first _Tuple_impl<0, T...> base class:
+ node = val.cast(val.type.fields()[0].type)
+ while n > 0:
+ # Descend through the base classes until the Nth one.
+ node = node.cast(node.type.fields()[0].type)
+ n -= 1
+ return _tuple_impl_get(node)
+
+
+def unique_ptr_get(val):
+ """Return the result of val.get() on a std::unique_ptr."""
+ # std::unique_ptr<T, D> contains a std::tuple<D::pointer, D>,
+ # either as a direct data member _M_t (the old implementation)
+ # or within a data member of type __uniq_ptr_data.
+ impl_type = val.type.fields()[0].type.strip_typedefs()
+ # Check for new implementations first:
+ if is_specialization_of(impl_type, '__uniq_ptr_data') \
+ or is_specialization_of(impl_type, '__uniq_ptr_impl'):
+ tuple_member = val['_M_t']['_M_t']
+ elif is_specialization_of(impl_type, 'tuple'):
+ tuple_member = val['_M_t']
+ else:
+ raise ValueError(
+ "Unsupported implementation for unique_ptr: %s" % str(impl_type))
+ return tuple_get(0, tuple_member)
+
- def children (self):
- return SmartPtrIterator(self.pointer)
+class UniquePointerPrinter(printer_base):
+ """Print a unique_ptr."""
+
+ def __init__(self, typename, val):
+ self._val = val
+
+ def children(self):
+ return SmartPtrIterator(unique_ptr_get(self._val))
+
+ def to_string(self):
+ t = self._val.type.template_argument(0)
+ return 'std::unique_ptr<{}>'.format(str(t))
- def to_string (self):
- return ('std::unique_ptr<%s>' % (str(self.val.type.template_argument(0))))
def get_value_from_aligned_membuf(buf, valtype):
- """Returns the value held in a __gnu_cxx::__aligned_membuf."""
+ """Return the value held in a __gnu_cxx::__aligned_membuf."""
return buf['_M_storage'].address.cast(valtype.pointer()).dereference()
+
def get_value_from_list_node(node):
- """Returns the value held in an _List_node<_Val>"""
+ """Return the value held in an _List_node<_Val>."""
try:
member = node.type.fields()[1].name
if member == '_M_data':
@@ -221,240 +400,281 @@ def get_value_from_list_node(node):
pass
raise ValueError("Unsupported implementation for %s" % str(node.type))
-class StdListPrinter:
- "Print a std::list"
+
+class StdListPrinter(printer_base):
+ """Print a std::list."""
class _iterator(Iterator):
def __init__(self, nodetype, head):
- self.nodetype = nodetype
- self.base = head['_M_next']
- self.head = head.address
- self.count = 0
+ self._nodetype = nodetype
+ self._base = head['_M_next']
+ self._head = head.address
+ self._count = 0
def __iter__(self):
return self
def __next__(self):
- if self.base == self.head:
+ if self._base == self._head:
raise StopIteration
- elt = self.base.cast(self.nodetype).dereference()
- self.base = elt['_M_next']
- count = self.count
- self.count = self.count + 1
+ elt = self._base.cast(self._nodetype).dereference()
+ self._base = elt['_M_next']
+ count = self._count
+ self._count = self._count + 1
val = get_value_from_list_node(elt)
return ('[%d]' % count, val)
def __init__(self, typename, val):
- self.typename = strip_versioned_namespace(typename)
- self.val = val
+ self._typename = strip_versioned_namespace(typename)
+ self._val = val
def children(self):
- nodetype = find_type(self.val.type, '_Node')
- nodetype = nodetype.strip_typedefs().pointer()
- return self._iterator(nodetype, self.val['_M_impl']['_M_node'])
+ nodetype = lookup_node_type('_List_node', self._val.type).pointer()
+ return self._iterator(nodetype, self._val['_M_impl']['_M_node'])
def to_string(self):
- if self.val['_M_impl']['_M_node'].address == self.val['_M_impl']['_M_node']['_M_next']:
- return 'empty %s' % (self.typename)
- return '%s' % (self.typename)
+ headnode = self._val['_M_impl']['_M_node']
+ if headnode['_M_next'] == headnode.address:
+ return 'empty %s' % (self._typename)
+ return '%s' % (self._typename)
-class NodeIteratorPrinter:
- def __init__(self, typename, val, contname):
- self.val = val
- self.typename = typename
- self.contname = contname
+
+class NodeIteratorPrinter(printer_base):
+ def __init__(self, typename, val, contname, nodename):
+ self._val = val
+ self._typename = typename
+ self._contname = contname
+ self._nodetype = lookup_node_type(nodename, val.type)
def to_string(self):
- if not self.val['_M_node']:
- return 'non-dereferenceable iterator for std::%s' % (self.contname)
- nodetype = find_type(self.val.type, '_Node')
- nodetype = nodetype.strip_typedefs().pointer()
- node = self.val['_M_node'].cast(nodetype).dereference()
+ if not self._val['_M_node']:
+ return 'non-dereferenceable iterator for std::%s' % (self._contname)
+ node = self._val['_M_node'].cast(
+ self._nodetype.pointer()).dereference()
return str(get_value_from_list_node(node))
+
class StdListIteratorPrinter(NodeIteratorPrinter):
- "Print std::list::iterator"
+ """Print std::list::iterator."""
def __init__(self, typename, val):
- NodeIteratorPrinter.__init__(self, typename, val, 'list')
+ NodeIteratorPrinter.__init__(self, typename, val, 'list', '_List_node')
+
class StdFwdListIteratorPrinter(NodeIteratorPrinter):
- "Print std::forward_list::iterator"
+ """Print std::forward_list::iterator."""
def __init__(self, typename, val):
- NodeIteratorPrinter.__init__(self, typename, val, 'forward_list')
+ NodeIteratorPrinter.__init__(self, typename, val, 'forward_list',
+ '_Fwd_list_node')
-class StdSlistPrinter:
- "Print a __gnu_cxx::slist"
+
+class StdSlistPrinter(printer_base):
+ """Print a __gnu_cxx::slist."""
class _iterator(Iterator):
def __init__(self, nodetype, head):
- self.nodetype = nodetype
- self.base = head['_M_head']['_M_next']
- self.count = 0
+ self._nodetype = nodetype
+ self._base = head['_M_head']['_M_next']
+ self._count = 0
def __iter__(self):
return self
def __next__(self):
- if self.base == 0:
+ if self._base == 0:
raise StopIteration
- elt = self.base.cast(self.nodetype).dereference()
- self.base = elt['_M_next']
- count = self.count
- self.count = self.count + 1
+ elt = self._base.cast(self._nodetype).dereference()
+ self._base = elt['_M_next']
+ count = self._count
+ self._count = self._count + 1
return ('[%d]' % count, elt['_M_data'])
def __init__(self, typename, val):
- self.val = val
+ self._val = val
def children(self):
- nodetype = find_type(self.val.type, '_Node')
- nodetype = nodetype.strip_typedefs().pointer()
- return self._iterator(nodetype, self.val)
+ nodetype = lookup_node_type('__gnu_cxx::_Slist_node', self._val.type)
+ return self._iterator(nodetype.pointer(), self._val)
def to_string(self):
- if self.val['_M_head']['_M_next'] == 0:
+ if self._val['_M_head']['_M_next'] == 0:
return 'empty __gnu_cxx::slist'
return '__gnu_cxx::slist'
-class StdSlistIteratorPrinter:
- "Print __gnu_cxx::slist::iterator"
+
+class StdSlistIteratorPrinter(printer_base):
+ """Print __gnu_cxx::slist::iterator."""
def __init__(self, typename, val):
- self.val = val
+ self._val = val
def to_string(self):
- if not self.val['_M_node']:
+ if not self._val['_M_node']:
return 'non-dereferenceable iterator for __gnu_cxx::slist'
- nodetype = find_type(self.val.type, '_Node')
- nodetype = nodetype.strip_typedefs().pointer()
- return str(self.val['_M_node'].cast(nodetype).dereference()['_M_data'])
+ nodetype = lookup_node_type(
+ '__gnu_cxx::_Slist_node', self._val.type).pointer()
+ return str(self._val['_M_node'].cast(nodetype).dereference()['_M_data'])
+
-class StdVectorPrinter:
- "Print a std::vector"
+class StdVectorPrinter(printer_base):
+ """Print a std::vector."""
class _iterator(Iterator):
- def __init__ (self, start, finish, bitvec):
- self.bitvec = bitvec
+ def __init__(self, start, finish, bitvec):
+ self._bitvec = bitvec
if bitvec:
- self.item = start['_M_p']
- self.so = start['_M_offset']
- self.finish = finish['_M_p']
- self.fo = finish['_M_offset']
- itype = self.item.dereference().type
- self.isize = 8 * itype.sizeof
+ self._item = start['_M_p']
+ self._so = 0
+ self._finish = finish['_M_p']
+ self._fo = finish['_M_offset']
+ itype = self._item.dereference().type
+ self._isize = 8 * itype.sizeof
else:
- self.item = start
- self.finish = finish
- self.count = 0
+ self._item = start
+ self._finish = finish
+ self._count = 0
def __iter__(self):
return self
def __next__(self):
- count = self.count
- self.count = self.count + 1
- if self.bitvec:
- if self.item == self.finish and self.so >= self.fo:
+ count = self._count
+ self._count = self._count + 1
+ if self._bitvec:
+ if self._item == self._finish and self._so >= self._fo:
raise StopIteration
- elt = self.item.dereference()
- if elt & (1 << self.so):
- obit = 1
- else:
- obit = 0
- self.so = self.so + 1
- if self.so >= self.isize:
- self.item = self.item + 1
- self.so = 0
- return ('[%d]' % count, obit)
+ elt = bool(self._item.dereference() & (1 << self._so))
+ self._so = self._so + 1
+ if self._so >= self._isize:
+ self._item = self._item + 1
+ self._so = 0
+ return ('[%d]' % count, elt)
else:
- if self.item == self.finish:
+ if self._item == self._finish:
raise StopIteration
- elt = self.item.dereference()
- self.item = self.item + 1
+ elt = self._item.dereference()
+ self._item = self._item + 1
return ('[%d]' % count, elt)
def __init__(self, typename, val):
- self.typename = strip_versioned_namespace(typename)
- self.val = val
- self.is_bool = val.type.template_argument(0).code == gdb.TYPE_CODE_BOOL
+ self._typename = strip_versioned_namespace(typename)
+ self._val = val
+ self._is_bool = val.type.template_argument(
+ 0).code == gdb.TYPE_CODE_BOOL
def children(self):
- return self._iterator(self.val['_M_impl']['_M_start'],
- self.val['_M_impl']['_M_finish'],
- self.is_bool)
+ return self._iterator(self._val['_M_impl']['_M_start'],
+ self._val['_M_impl']['_M_finish'],
+ self._is_bool)
def to_string(self):
- start = self.val['_M_impl']['_M_start']
- finish = self.val['_M_impl']['_M_finish']
- end = self.val['_M_impl']['_M_end_of_storage']
- if self.is_bool:
- start = self.val['_M_impl']['_M_start']['_M_p']
- so = self.val['_M_impl']['_M_start']['_M_offset']
- finish = self.val['_M_impl']['_M_finish']['_M_p']
- fo = self.val['_M_impl']['_M_finish']['_M_offset']
+ start = self._val['_M_impl']['_M_start']
+ finish = self._val['_M_impl']['_M_finish']
+ end = self._val['_M_impl']['_M_end_of_storage']
+ if self._is_bool:
+ start = self._val['_M_impl']['_M_start']['_M_p']
+ finish = self._val['_M_impl']['_M_finish']['_M_p']
+ fo = self._val['_M_impl']['_M_finish']['_M_offset']
itype = start.dereference().type
bl = 8 * itype.sizeof
- length = (bl - so) + bl * ((finish - start) - 1) + fo
+ length = bl * (finish - start) + fo
capacity = bl * (end - start)
return ('%s<bool> of length %d, capacity %d'
- % (self.typename, int (length), int (capacity)))
+ % (self._typename, int(length), int(capacity)))
else:
return ('%s of length %d, capacity %d'
- % (self.typename, int (finish - start), int (end - start)))
+ % (self._typename, int(finish - start), int(end - start)))
def display_hint(self):
return 'array'
-class StdVectorIteratorPrinter:
- "Print std::vector::iterator"
+
+class StdVectorIteratorPrinter(printer_base):
+ """Print std::vector::iterator."""
def __init__(self, typename, val):
- self.val = val
+ self._val = val
def to_string(self):
- if not self.val['_M_current']:
+ if not self._val['_M_current']:
return 'non-dereferenceable iterator for std::vector'
- return str(self.val['_M_current'].dereference())
+ return str(self._val['_M_current'].dereference())
+
+
+class StdBitIteratorPrinter(printer_base):
+ """Print std::vector<bool>'s _Bit_iterator and _Bit_const_iterator."""
+
+ def __init__(self, typename, val):
+ self._val = val
+
+ def to_string(self):
+ if not self._val['_M_p']:
+ return 'non-dereferenceable iterator for std::vector<bool>'
+ return bool(self._val['_M_p'].dereference()
+ & (1 << self._val['_M_offset']))
-class StdTuplePrinter:
- "Print a std::tuple"
+
+class StdBitReferencePrinter(printer_base):
+ """Print std::vector<bool>::reference."""
+
+ def __init__(self, typename, val):
+ self._val = val
+
+ def to_string(self):
+ if not self._val['_M_p']:
+ return 'invalid std::vector<bool>::reference'
+ return bool(self._val['_M_p'].dereference() & (self._val['_M_mask']))
+
+
+class StdTuplePrinter(printer_base):
+ """Print a std::tuple."""
class _iterator(Iterator):
- def __init__ (self, head):
- self.head = head
+ @staticmethod
+ def _is_nonempty_tuple(nodes):
+ if len(nodes) == 2:
+ if is_specialization_of(nodes[1].type, '__tuple_base'):
+ return True
+ elif len(nodes) == 1:
+ return True
+ elif len(nodes) == 0:
+ return False
+ raise ValueError(
+ "Top of tuple tree does not consist of a single node.")
+
+ def __init__(self, head):
+ self._head = head
# Set the base class as the initial head of the
# tuple.
- nodes = self.head.type.fields ()
- if len (nodes) == 1:
+ nodes = self._head.type.fields()
+ if self._is_nonempty_tuple(nodes):
# Set the actual head to the first pair.
- self.head = self.head.cast (nodes[0].type)
- elif len (nodes) != 0:
- raise ValueError("Top of tuple tree does not consist of a single node.")
- self.count = 0
+ self._head = self._head.cast(nodes[0].type)
+ self._count = 0
- def __iter__ (self):
+ def __iter__(self):
return self
- def __next__ (self):
+ def __next__(self):
# Check for further recursions in the inheritance tree.
- # For a GCC 5+ tuple self.head is None after visiting all nodes:
- if not self.head:
+ # For a GCC 5+ tuple self._head is None after visiting all nodes:
+ if not self._head:
raise StopIteration
- nodes = self.head.type.fields ()
+ nodes = self._head.type.fields()
# For a GCC 4.x tuple there is a final node with no fields:
- if len (nodes) == 0:
+ if len(nodes) == 0:
raise StopIteration
# Check that this iteration has an expected structure.
- if len (nodes) > 2:
- raise ValueError("Cannot parse more than 2 nodes in a tuple tree.")
+ if len(nodes) > 2:
+ raise ValueError(
+ "Cannot parse more than 2 nodes in a tuple tree.")
- if len (nodes) == 1:
+ if len(nodes) == 1:
# This is the last node of a GCC 5+ std::tuple.
- impl = self.head.cast (nodes[0].type)
- self.head = None
+ impl = self._head.cast(nodes[0].type)
+ self._head = None
else:
# Either a node before the last node, or the last node of
# a GCC 4.x tuple (which has an empty parent).
@@ -463,53 +683,55 @@ class StdTuplePrinter:
# - Right node is the actual class contained in the tuple.
# Process right node.
- impl = self.head.cast (nodes[1].type)
+ impl = self._head.cast(nodes[1].type)
# Process left node and set it as head.
- self.head = self.head.cast (nodes[0].type)
+ self._head = self._head.cast(nodes[0].type)
- self.count = self.count + 1
+ self._count = self._count + 1
# Finally, check the implementation. If it is
# wrapped in _M_head_impl return that, otherwise return
# the value "as is".
- fields = impl.type.fields ()
- if len (fields) < 1 or fields[0].name != "_M_head_impl":
- return ('[%d]' % self.count, impl)
+ fields = impl.type.fields()
+ if len(fields) < 1 or fields[0].name != "_M_head_impl":
+ return ('[%d]' % (self._count - 1), impl)
else:
- return ('[%d]' % self.count, impl['_M_head_impl'])
+ return ('[%d]' % (self._count - 1), impl['_M_head_impl'])
- def __init__ (self, typename, val):
- self.typename = strip_versioned_namespace(typename)
- self.val = val;
+ def __init__(self, typename, val):
+ self._typename = strip_versioned_namespace(typename)
+ self._val = val
- def children (self):
- return self._iterator (self.val)
+ def children(self):
+ return self._iterator(self._val)
- def to_string (self):
- if len (self.val.type.fields ()) == 0:
- return 'empty %s' % (self.typename)
- return '%s containing' % (self.typename)
+ def to_string(self):
+ if len(self._val.type.fields()) == 0:
+ return 'empty %s' % (self._typename)
+ return '%s containing' % (self._typename)
-class StdStackOrQueuePrinter:
- "Print a std::stack or std::queue"
- def __init__ (self, typename, val):
- self.typename = strip_versioned_namespace(typename)
- self.visualizer = gdb.default_visualizer(val['c'])
+class StdStackOrQueuePrinter(printer_base):
+ """Print a std::stack or std::queue."""
- def children (self):
- return self.visualizer.children()
+ def __init__(self, typename, val):
+ self._typename = strip_versioned_namespace(typename)
+ self._visualizer = gdb.default_visualizer(val['c'])
- def to_string (self):
- return '%s wrapping: %s' % (self.typename,
- self.visualizer.to_string())
+ def children(self):
+ return self._visualizer.children()
+
+ def to_string(self):
+ return '%s wrapping: %s' % (self._typename,
+ self._visualizer.to_string())
- def display_hint (self):
- if hasattr (self.visualizer, 'display_hint'):
- return self.visualizer.display_hint ()
+ def display_hint(self):
+ if hasattr(self._visualizer, 'display_hint'):
+ return self._visualizer.display_hint()
return None
+
class RbtreeIterator(Iterator):
"""
Turn an RB-tree-based container (std::map, std::set etc.) into
@@ -517,24 +739,24 @@ class RbtreeIterator(Iterator):
"""
def __init__(self, rbtree):
- self.size = rbtree['_M_t']['_M_impl']['_M_node_count']
- self.node = rbtree['_M_t']['_M_impl']['_M_header']['_M_left']
- self.count = 0
+ self._size = rbtree['_M_t']['_M_impl']['_M_node_count']
+ self._node = rbtree['_M_t']['_M_impl']['_M_header']['_M_left']
+ self._count = 0
def __iter__(self):
return self
def __len__(self):
- return int (self.size)
+ return int(self._size)
def __next__(self):
- if self.count == self.size:
+ if self._count == self._size:
raise StopIteration
- result = self.node
- self.count = self.count + 1
- if self.count < self.size:
+ result = self._node
+ self._count = self._count + 1
+ if self._count < self._size:
# Compute the next node.
- node = self.node
+ node = self._node
if node.dereference()['_M_right']:
node = node.dereference()['_M_right']
while node.dereference()['_M_left']:
@@ -546,11 +768,12 @@ class RbtreeIterator(Iterator):
parent = parent.dereference()['_M_parent']
if node.dereference()['_M_right'] != parent:
node = parent
- self.node = node
+ self._node = node
return result
+
def get_value_from_Rb_tree_node(node):
- """Returns the value held in an _Rb_tree_node<_Val>"""
+ """Return the value held in an _Rb_tree_node<_Val>."""
try:
member = node.type.fields()[1].name
if member == '_M_value_field':
@@ -567,143 +790,142 @@ def get_value_from_Rb_tree_node(node):
# This is a pretty printer for std::_Rb_tree_iterator (which is
# std::map::iterator), and has nothing to do with the RbtreeIterator
# class above.
-class StdRbtreeIteratorPrinter:
- "Print std::map::iterator, std::set::iterator, etc."
-
- def __init__ (self, typename, val):
- self.val = val
- valtype = self.val.type.template_argument(0).strip_typedefs()
- nodetype = '_Rb_tree_node<' + str(valtype) + '>'
- if _versioned_namespace and typename.startswith('std::' + _versioned_namespace):
- nodetype = _versioned_namespace + nodetype
- nodetype = gdb.lookup_type('std::' + nodetype)
- self.link_type = nodetype.strip_typedefs().pointer()
-
- def to_string (self):
- if not self.val['_M_node']:
+
+
+class StdRbtreeIteratorPrinter(printer_base):
+ """Print std::map::iterator, std::set::iterator, etc."""
+
+ def __init__(self, typename, val):
+ self._val = val
+ nodetype = lookup_node_type('_Rb_tree_node', self._val.type)
+ self._link_type = nodetype.pointer()
+
+ def to_string(self):
+ if not self._val['_M_node']:
return 'non-dereferenceable iterator for associative container'
- node = self.val['_M_node'].cast(self.link_type).dereference()
+ node = self._val['_M_node'].cast(self._link_type).dereference()
return str(get_value_from_Rb_tree_node(node))
-class StdDebugIteratorPrinter:
- "Print a debug enabled version of an iterator"
- def __init__ (self, typename, val):
- self.val = val
+class StdDebugIteratorPrinter(printer_base):
+ """Print a debug enabled version of an iterator."""
+
+ def __init__(self, typename, val):
+ self._val = val
# Just strip away the encapsulating __gnu_debug::_Safe_iterator
# and return the wrapped iterator value.
- def to_string (self):
+ def to_string(self):
base_type = gdb.lookup_type('__gnu_debug::_Safe_iterator_base')
- itype = self.val.type.template_argument(0)
- safe_seq = self.val.cast(base_type)['_M_sequence']
+ itype = self._val.type.template_argument(0)
+ safe_seq = self._val.cast(base_type)['_M_sequence']
if not safe_seq:
- return str(self.val.cast(itype))
- if self.val['_M_version'] != safe_seq['_M_version']:
+ return str(self._val.cast(itype))
+ if self._val['_M_version'] != safe_seq['_M_version']:
return "invalid iterator"
- return str(self.val.cast(itype))
+ return str(self._val.cast(itype))
+
def num_elements(num):
"""Return either "1 element" or "N elements" depending on the argument."""
return '1 element' if num == 1 else '%d elements' % num
-class StdMapPrinter:
- "Print a std::map or std::multimap"
+
+class StdMapPrinter(printer_base):
+ """Print a std::map or std::multimap."""
# Turn an RbtreeIterator into a pretty-print iterator.
class _iter(Iterator):
def __init__(self, rbiter, type):
- self.rbiter = rbiter
- self.count = 0
- self.type = type
+ self._rbiter = rbiter
+ self._count = 0
+ self._type = type
def __iter__(self):
return self
def __next__(self):
- if self.count % 2 == 0:
- n = next(self.rbiter)
- n = n.cast(self.type).dereference()
+ if self._count % 2 == 0:
+ n = next(self._rbiter)
+ n = n.cast(self._type).dereference()
n = get_value_from_Rb_tree_node(n)
- self.pair = n
+ self._pair = n
item = n['first']
else:
- item = self.pair['second']
- result = ('[%d]' % self.count, item)
- self.count = self.count + 1
+ item = self._pair['second']
+ result = ('[%d]' % self._count, item)
+ self._count = self._count + 1
return result
- def __init__ (self, typename, val):
- self.typename = strip_versioned_namespace(typename)
- self.val = val
+ def __init__(self, typename, val):
+ self._typename = strip_versioned_namespace(typename)
+ self._val = val
- def to_string (self):
- return '%s with %s' % (self.typename,
- num_elements(len(RbtreeIterator (self.val))))
+ def to_string(self):
+ return '%s with %s' % (self._typename,
+ num_elements(len(RbtreeIterator(self._val))))
- def children (self):
- rep_type = find_type(self.val.type, '_Rep_type')
- node = find_type(rep_type, '_Link_type')
- node = node.strip_typedefs()
- return self._iter (RbtreeIterator (self.val), node)
+ def children(self):
+ node = lookup_node_type('_Rb_tree_node', self._val.type).pointer()
+ return self._iter(RbtreeIterator(self._val), node)
- def display_hint (self):
+ def display_hint(self):
return 'map'
-class StdSetPrinter:
- "Print a std::set or std::multiset"
+
+class StdSetPrinter(printer_base):
+ """Print a std::set or std::multiset."""
# Turn an RbtreeIterator into a pretty-print iterator.
class _iter(Iterator):
def __init__(self, rbiter, type):
- self.rbiter = rbiter
- self.count = 0
- self.type = type
+ self._rbiter = rbiter
+ self._count = 0
+ self._type = type
def __iter__(self):
return self
def __next__(self):
- item = next(self.rbiter)
- item = item.cast(self.type).dereference()
+ item = next(self._rbiter)
+ item = item.cast(self._type).dereference()
item = get_value_from_Rb_tree_node(item)
# FIXME: this is weird ... what to do?
# Maybe a 'set' display hint?
- result = ('[%d]' % self.count, item)
- self.count = self.count + 1
+ result = ('[%d]' % self._count, item)
+ self._count = self._count + 1
return result
- def __init__ (self, typename, val):
- self.typename = strip_versioned_namespace(typename)
- self.val = val
+ def __init__(self, typename, val):
+ self._typename = strip_versioned_namespace(typename)
+ self._val = val
- def to_string (self):
- return '%s with %s' % (self.typename,
- num_elements(len(RbtreeIterator (self.val))))
+ def to_string(self):
+ return '%s with %s' % (self._typename,
+ num_elements(len(RbtreeIterator(self._val))))
- def children (self):
- rep_type = find_type(self.val.type, '_Rep_type')
- node = find_type(rep_type, '_Link_type')
- node = node.strip_typedefs()
- return self._iter (RbtreeIterator (self.val), node)
+ def children(self):
+ node = lookup_node_type('_Rb_tree_node', self._val.type).pointer()
+ return self._iter(RbtreeIterator(self._val), node)
-class StdBitsetPrinter:
- "Print a std::bitset"
+
+class StdBitsetPrinter(printer_base):
+ """Print a std::bitset."""
def __init__(self, typename, val):
- self.typename = strip_versioned_namespace(typename)
- self.val = val
+ self._typename = strip_versioned_namespace(typename)
+ self._val = val
- def to_string (self):
+ def to_string(self):
# If template_argument handled values, we could print the
# size. Or we could use a regexp on the type.
- return '%s' % (self.typename)
+ return '%s' % (self._typename)
- def children (self):
+ def children(self):
try:
# An empty bitset may not have any members which will
# result in an exception being thrown.
- words = self.val['_M_w']
+ words = self._val['_M_w']
except:
return []
@@ -713,7 +935,7 @@ class StdBitsetPrinter:
# array. This depends on the template specialization used.
# If it is a single long, convert to a single element list.
if wtype.code == gdb.TYPE_CODE_ARRAY:
- tsize = wtype.target ().sizeof
+ tsize = wtype.target().sizeof
else:
words = [words]
tsize = wtype.sizeof
@@ -733,279 +955,349 @@ class StdBitsetPrinter:
byte = byte + 1
return result
-class StdDequePrinter:
- "Print a std::deque"
+
+class StdDequePrinter(printer_base):
+ """Print a std::deque."""
class _iter(Iterator):
def __init__(self, node, start, end, last, buffer_size):
- self.node = node
- self.p = start
- self.end = end
- self.last = last
- self.buffer_size = buffer_size
- self.count = 0
+ self._node = node
+ self._p = start
+ self._end = end
+ self._last = last
+ self._buffer_size = buffer_size
+ self._count = 0
def __iter__(self):
return self
def __next__(self):
- if self.p == self.last:
+ if self._p == self._last:
raise StopIteration
- result = ('[%d]' % self.count, self.p.dereference())
- self.count = self.count + 1
+ result = ('[%d]' % self._count, self._p.dereference())
+ self._count = self._count + 1
# Advance the 'cur' pointer.
- self.p = self.p + 1
- if self.p == self.end:
+ self._p = self._p + 1
+ if self._p == self._end:
# If we got to the end of this bucket, move to the
# next bucket.
- self.node = self.node + 1
- self.p = self.node[0]
- self.end = self.p + self.buffer_size
+ self._node = self._node + 1
+ self._p = self._node[0]
+ self._end = self._p + self._buffer_size
return result
def __init__(self, typename, val):
- self.typename = strip_versioned_namespace(typename)
- self.val = val
- self.elttype = val.type.template_argument(0)
- size = self.elttype.sizeof
+ self._typename = strip_versioned_namespace(typename)
+ self._val = val
+ self._elttype = val.type.template_argument(0)
+ size = self._elttype.sizeof
if size < 512:
- self.buffer_size = int (512 / size)
+ self._buffer_size = int(512 / size)
else:
- self.buffer_size = 1
+ self._buffer_size = 1
def to_string(self):
- start = self.val['_M_impl']['_M_start']
- end = self.val['_M_impl']['_M_finish']
+ start = self._val['_M_impl']['_M_start']
+ end = self._val['_M_impl']['_M_finish']
delta_n = end['_M_node'] - start['_M_node'] - 1
delta_s = start['_M_last'] - start['_M_cur']
delta_e = end['_M_cur'] - end['_M_first']
- size = self.buffer_size * delta_n + delta_s + delta_e
+ size = self._buffer_size * delta_n + delta_s + delta_e
- return '%s with %s' % (self.typename, num_elements(long(size)))
+ return '%s with %s' % (self._typename, num_elements(long(size)))
def children(self):
- start = self.val['_M_impl']['_M_start']
- end = self.val['_M_impl']['_M_finish']
+ start = self._val['_M_impl']['_M_start']
+ end = self._val['_M_impl']['_M_finish']
return self._iter(start['_M_node'], start['_M_cur'], start['_M_last'],
- end['_M_cur'], self.buffer_size)
+ end['_M_cur'], self._buffer_size)
- def display_hint (self):
+ def display_hint(self):
return 'array'
-class StdDequeIteratorPrinter:
- "Print std::deque::iterator"
+
+class StdDequeIteratorPrinter(printer_base):
+ """Print std::deque::iterator."""
def __init__(self, typename, val):
- self.val = val
+ self._val = val
def to_string(self):
- if not self.val['_M_cur']:
+ if not self._val['_M_cur']:
return 'non-dereferenceable iterator for std::deque'
- return str(self.val['_M_cur'].dereference())
+ return str(self._val['_M_cur'].dereference())
-class StdStringPrinter:
- "Print a std::basic_string of some kind"
+
+class StdStringPrinter(printer_base):
+ """Print a std::basic_string of some kind."""
def __init__(self, typename, val):
- self.val = val
- self.new_string = typename.find("::__cxx11::basic_string") != -1
+ self._val = val
+ self._new_string = typename.find("::__cxx11::basic_string") != -1
def to_string(self):
# Make sure &string works, too.
- type = self.val.type
+ type = self._val.type
if type.code == gdb.TYPE_CODE_REF:
- type = type.target ()
+ type = type.target()
# Calculate the length of the string so that to_string returns
# the string according to length, not according to first null
# encountered.
- ptr = self.val ['_M_dataplus']['_M_p']
- if self.new_string:
- length = self.val['_M_string_length']
+ ptr = self._val['_M_dataplus']['_M_p']
+ if self._new_string:
+ length = self._val['_M_string_length']
# https://sourceware.org/bugzilla/show_bug.cgi?id=17728
ptr = ptr.cast(ptr.type.strip_typedefs())
else:
- realtype = type.unqualified ().strip_typedefs ()
- reptype = gdb.lookup_type (str (realtype) + '::_Rep').pointer ()
+ realtype = type.unqualified().strip_typedefs()
+ reptype = gdb.lookup_type(str(realtype) + '::_Rep').pointer()
header = ptr.cast(reptype) - 1
- length = header.dereference ()['_M_length']
+ length = header.dereference()['_M_length']
if hasattr(ptr, "lazy_string"):
- return ptr.lazy_string (length = length)
- return ptr.string (length = length)
+ return ptr.lazy_string(length=length)
+ return ptr.string(length=length)
+
+ def display_hint(self):
+ return 'string'
+
+
+def access_streambuf_ptrs(streambuf):
+ """Access the streambuf put area pointers."""
+ pbase = streambuf['_M_out_beg']
+ pptr = streambuf['_M_out_cur']
+ egptr = streambuf['_M_in_end']
+ return pbase, pptr, egptr
- def display_hint (self):
+
+class StdStringBufPrinter(printer_base):
+ """Print a std::basic_stringbuf."""
+
+ def __init__(self, _, val):
+ self._val = val
+
+ def to_string(self):
+ (pbase, pptr, egptr) = access_streambuf_ptrs(self._val)
+ # Logic from basic_stringbuf::_M_high_mark()
+ if pptr:
+ if not egptr or pptr > egptr:
+ return pbase.string(length=pptr - pbase)
+ else:
+ return pbase.string(length=egptr - pbase)
+ return self._val['_M_string']
+
+ def display_hint(self):
return 'string'
+
+class StdStringStreamPrinter(printer_base):
+ """Print a std::basic_stringstream."""
+
+ def __init__(self, typename, val):
+ self._val = val
+ self._typename = typename
+
+ # Check if the stream was redirected. This is essentially:
+ # val['_M_streambuf'] != val['_M_stringbuf'].address
+ # However, GDB can't resolve the virtual inheritance, so we do that
+ # manually.
+ basetype = [f.type for f in val.type.fields() if f.is_base_class][0]
+ gdb.set_convenience_variable('__stream', val.cast(basetype).address)
+ self._streambuf = gdb.parse_and_eval('$__stream->rdbuf()')
+ self._was_redirected = self._streambuf != val['_M_stringbuf'].address
+
+ def to_string(self):
+ if self._was_redirected:
+ return "%s redirected to %s" % (
+ self._typename, self._streambuf.dereference())
+ return self._val['_M_stringbuf']
+
+ def display_hint(self):
+ if self._was_redirected:
+ return None
+ return 'string'
+
+
class Tr1HashtableIterator(Iterator):
- def __init__ (self, hash):
- self.buckets = hash['_M_buckets']
- self.bucket = 0
- self.bucket_count = hash['_M_bucket_count']
- self.node_type = find_type(hash.type, '_Node').pointer()
- self.node = 0
- while self.bucket != self.bucket_count:
- self.node = self.buckets[self.bucket]
- if self.node:
+ def __init__(self, hashtable):
+ self._buckets = hashtable['_M_buckets']
+ self._bucket = 0
+ self._bucket_count = hashtable['_M_bucket_count']
+ self._node_type = find_type(hashtable.type, '_Node').pointer()
+ self._node = 0
+ while self._bucket != self._bucket_count:
+ self._node = self._buckets[self._bucket]
+ if self._node:
break
- self.bucket = self.bucket + 1
+ self._bucket = self._bucket + 1
- def __iter__ (self):
+ def __iter__(self):
return self
- def __next__ (self):
- if self.node == 0:
+ def __next__(self):
+ if self._node == 0:
raise StopIteration
- node = self.node.cast(self.node_type)
+ node = self._node.cast(self._node_type)
result = node.dereference()['_M_v']
- self.node = node.dereference()['_M_next'];
- if self.node == 0:
- self.bucket = self.bucket + 1
- while self.bucket != self.bucket_count:
- self.node = self.buckets[self.bucket]
- if self.node:
+ self._node = node.dereference()['_M_next']
+ if self._node == 0:
+ self._bucket = self._bucket + 1
+ while self._bucket != self._bucket_count:
+ self._node = self._buckets[self._bucket]
+ if self._node:
break
- self.bucket = self.bucket + 1
+ self._bucket = self._bucket + 1
return result
+
class StdHashtableIterator(Iterator):
- def __init__(self, hash):
- self.node = hash['_M_before_begin']['_M_nxt']
- self.node_type = find_type(hash.type, '__node_type').pointer()
+ def __init__(self, hashtable):
+ self._node = hashtable['_M_before_begin']['_M_nxt']
+ valtype = hashtable.type.template_argument(1)
+ cached = hashtable.type.template_argument(9).template_argument(0)
+ node_type = lookup_templ_spec('std::__detail::_Hash_node', str(valtype),
+ 'true' if cached else 'false')
+ self._node_type = node_type.pointer()
def __iter__(self):
return self
def __next__(self):
- if self.node == 0:
+ if self._node == 0:
raise StopIteration
- elt = self.node.cast(self.node_type).dereference()
- self.node = elt['_M_nxt']
+ elt = self._node.cast(self._node_type).dereference()
+ self._node = elt['_M_nxt']
valptr = elt['_M_storage'].address
valptr = valptr.cast(elt.type.template_argument(0).pointer())
return valptr.dereference()
-class Tr1UnorderedSetPrinter:
- "Print a tr1::unordered_set"
- def __init__ (self, typename, val):
- self.typename = strip_versioned_namespace(typename)
- self.val = val
+class Tr1UnorderedSetPrinter(printer_base):
+ """Print a std::unordered_set or tr1::unordered_set."""
+
+ def __init__(self, typename, val):
+ self._typename = strip_versioned_namespace(typename)
+ self._val = val
- def hashtable (self):
- if self.typename.startswith('std::tr1'):
- return self.val
- return self.val['_M_h']
+ def _hashtable(self):
+ if self._typename.startswith('std::tr1'):
+ return self._val
+ return self._val['_M_h']
- def to_string (self):
- count = self.hashtable()['_M_element_count']
- return '%s with %s' % (self.typename, num_elements(count))
+ def to_string(self):
+ count = self._hashtable()['_M_element_count']
+ return '%s with %s' % (self._typename, num_elements(count))
@staticmethod
- def format_count (i):
+ def _format_count(i):
return '[%d]' % i
- def children (self):
- counter = imap (self.format_count, itertools.count())
- if self.typename.startswith('std::tr1'):
- return izip (counter, Tr1HashtableIterator (self.hashtable()))
- return izip (counter, StdHashtableIterator (self.hashtable()))
+ def children(self):
+ counter = imap(self._format_count, itertools.count())
+ if self._typename.startswith('std::tr1'):
+ return izip(counter, Tr1HashtableIterator(self._hashtable()))
+ return izip(counter, StdHashtableIterator(self._hashtable()))
-class Tr1UnorderedMapPrinter:
- "Print a tr1::unordered_map"
- def __init__ (self, typename, val):
- self.typename = strip_versioned_namespace(typename)
- self.val = val
+class Tr1UnorderedMapPrinter(printer_base):
+ """Print a std::unordered_map or tr1::unordered_map."""
- def hashtable (self):
- if self.typename.startswith('std::tr1'):
- return self.val
- return self.val['_M_h']
+ def __init__(self, typename, val):
+ self._typename = strip_versioned_namespace(typename)
+ self._val = val
+
+ def _hashtable(self):
+ if self._typename.startswith('std::tr1'):
+ return self._val
+ return self._val['_M_h']
- def to_string (self):
- count = self.hashtable()['_M_element_count']
- return '%s with %s' % (self.typename, num_elements(count))
+ def to_string(self):
+ count = self._hashtable()['_M_element_count']
+ return '%s with %s' % (self._typename, num_elements(count))
@staticmethod
- def flatten (list):
+ def _flatten(list):
for elt in list:
for i in elt:
yield i
@staticmethod
- def format_one (elt):
+ def _format_one(elt):
return (elt['first'], elt['second'])
@staticmethod
- def format_count (i):
+ def _format_count(i):
return '[%d]' % i
- def children (self):
- counter = imap (self.format_count, itertools.count())
+ def children(self):
+ counter = imap(self._format_count, itertools.count())
# Map over the hash table and flatten the result.
- if self.typename.startswith('std::tr1'):
- data = self.flatten (imap (self.format_one, Tr1HashtableIterator (self.hashtable())))
+ if self._typename.startswith('std::tr1'):
+ data = self._flatten(
+ imap(self._format_one, Tr1HashtableIterator(self._hashtable())))
# Zip the two iterators together.
- return izip (counter, data)
- data = self.flatten (imap (self.format_one, StdHashtableIterator (self.hashtable())))
+ return izip(counter, data)
+ data = self._flatten(
+ imap(self._format_one, StdHashtableIterator(self._hashtable())))
# Zip the two iterators together.
- return izip (counter, data)
+ return izip(counter, data)
- def display_hint (self):
+ def display_hint(self):
return 'map'
-class StdForwardListPrinter:
- "Print a std::forward_list"
+
+class StdForwardListPrinter(printer_base):
+ """Print a std::forward_list."""
class _iterator(Iterator):
def __init__(self, nodetype, head):
- self.nodetype = nodetype
- self.base = head['_M_next']
- self.count = 0
+ self._nodetype = nodetype
+ self._base = head['_M_next']
+ self._count = 0
def __iter__(self):
return self
def __next__(self):
- if self.base == 0:
+ if self._base == 0:
raise StopIteration
- elt = self.base.cast(self.nodetype).dereference()
- self.base = elt['_M_next']
- count = self.count
- self.count = self.count + 1
+ elt = self._base.cast(self._nodetype).dereference()
+ self._base = elt['_M_next']
+ count = self._count
+ self._count = self._count + 1
valptr = elt['_M_storage'].address
valptr = valptr.cast(elt.type.template_argument(0).pointer())
return ('[%d]' % count, valptr.dereference())
def __init__(self, typename, val):
- self.val = val
- self.typename = strip_versioned_namespace(typename)
+ self._val = val
+ self._typename = strip_versioned_namespace(typename)
def children(self):
- nodetype = find_type(self.val.type, '_Node')
- nodetype = nodetype.strip_typedefs().pointer()
- return self._iterator(nodetype, self.val['_M_impl']['_M_head'])
+ nodetype = lookup_node_type('_Fwd_list_node', self._val.type).pointer()
+ return self._iterator(nodetype, self._val['_M_impl']['_M_head'])
def to_string(self):
- if self.val['_M_impl']['_M_head']['_M_next'] == 0:
- return 'empty %s' % self.typename
- return '%s' % self.typename
+ if self._val['_M_impl']['_M_head']['_M_next'] == 0:
+ return 'empty %s' % self._typename
+ return '%s' % self._typename
+
-class SingleObjContainerPrinter(object):
- "Base class for printers of containers of single objects"
+class SingleObjContainerPrinter(printer_base):
+ """Base class for printers of containers of single objects."""
- def __init__ (self, val, viz, hint = None):
- self.contained_value = val
- self.visualizer = viz
- self.hint = hint
+ def __init__(self, val, viz, hint=None):
+ self._contained_value = val
+ self._visualizer = viz
+ self._hint = hint
def _recognize(self, type):
- """Return TYPE as a string after applying type printers"""
+ """Return type as a string after applying type printers."""
global _use_type_printing
if not _use_type_printing:
return str(type)
@@ -1013,35 +1305,37 @@ class SingleObjContainerPrinter(object):
type) or str(type)
class _contained(Iterator):
- def __init__ (self, val):
- self.val = val
+ def __init__(self, val):
+ self._val = val
- def __iter__ (self):
+ def __iter__(self):
return self
def __next__(self):
- if self.val is None:
+ if self._val is None:
raise StopIteration
- retval = self.val
- self.val = None
+ retval = self._val
+ self._val = None
return ('[contained value]', retval)
- def children (self):
- if self.contained_value is None:
- return self._contained (None)
- if hasattr (self.visualizer, 'children'):
- return self.visualizer.children ()
- return self._contained (self.contained_value)
+ def children(self):
+ if self._contained_value is None:
+ return self._contained(None)
+ if hasattr(self._visualizer, 'children'):
+ return self._visualizer.children()
+ return self._contained(self._contained_value)
+
+ def display_hint(self):
+ if (hasattr(self._visualizer, 'children')
+ and hasattr(self._visualizer, 'display_hint')):
+ # If contained value is a map we want to display in the same way.
+ return self._visualizer.display_hint()
+ return self._hint
- def display_hint (self):
- # if contained value is a map we want to display in the same way
- if hasattr (self.visualizer, 'children') and hasattr (self.visualizer, 'display_hint'):
- return self.visualizer.display_hint ()
- return self.hint
def function_pointer_to_name(f):
- "Find the name of the function referred to by the gdb.Value f, "
- " which should contain a function pointer from the program."
+ """Find the name of the function referred to by the gdb.Value f,
+ which should contain a function pointer from the program."""
# Turn the function pointer into an actual address.
# This is needed to unpack ppc64 function descriptors.
@@ -1062,252 +1356,1003 @@ def function_pointer_to_name(f):
except:
return None
+
class StdExpAnyPrinter(SingleObjContainerPrinter):
- "Print a std::any or std::experimental::any"
+ """Print a std::any or std::experimental::any."""
- def __init__ (self, typename, val):
- self.typename = strip_versioned_namespace(typename)
- self.typename = re.sub('^std::experimental::fundamentals_v\d::', 'std::experimental::', self.typename, 1)
- self.val = val
- self.contained_type = None
+ def __init__(self, typename, val):
+ self._typename = strip_versioned_namespace(typename)
+ self._typename = strip_fundts_namespace(self._typename)
+ self._val = val
+ self._contained_type = None
contained_value = None
visualizer = None
- mgr = self.val['_M_manager']
+ mgr = self._val['_M_manager']
if mgr != 0:
func = function_pointer_to_name(mgr)
if not func:
- raise ValueError("Invalid function pointer in %s" % (self.typename))
- rx = r"""({0}::_Manager_\w+<.*>)::_S_manage""".format(typename)
+ raise ValueError(
+ "Invalid function pointer in %s" % (self._typename))
+ # We want to use this regular expression:
+ # T::_Manager_xxx<.*>::_S_manage\(T::_Op, const T\*, T::_Arg\*\)
+ # where T is std::any or std::experimental::any.
+ # But we need to account for variances in demangled names
+ # between GDB versions, e.g. 'enum T::_Op' instead of 'T::_Op'.
+ rx = (
+ r"({0}::_Manager_\w+<.*>)::_S_manage\("
+ r"(enum )?{0}::_Op, (const {0}|{0} const) ?\*, "
+ r"(union )?{0}::_Arg ?\*\)"
+ ).format(typename)
m = re.match(rx, func)
if not m:
- raise ValueError("Unknown manager function in %s" % self.typename)
+ raise ValueError(
+ "Unknown manager function in %s" % self._typename)
mgrname = m.group(1)
# FIXME need to expand 'std::string' so that gdb.lookup_type works
if 'std::string' in mgrname:
- mgrname = re.sub("std::string(?!\w)", str(gdb.lookup_type('std::string').strip_typedefs()), m.group(1))
-
- mgrtype = gdb.lookup_type(mgrname)
- self.contained_type = mgrtype.template_argument(0)
+ mgrtypes = []
+ for s in StdExpAnyPrinter._string_types():
+ try:
+ x = re.sub(r"std::string(?!\w)", s, m.group(1))
+ # The following lookup might raise gdb.error if the
+ # manager function was never instantiated for 's' in
+ # the program, because there will be no such type.
+ mgrtypes.append(gdb.lookup_type(x))
+ except gdb.error:
+ pass
+ if len(mgrtypes) != 1:
+ # FIXME: this is unlikely in practice, but possible for
+ # programs that use both old and new string types with
+ # std::any in a single program. Can we do better?
+ # Maybe find the address of each type's _S_manage and
+ # compare to the address stored in _M_manager?
+ raise ValueError(
+ 'Cannot uniquely determine std::string type '
+ 'used in std::any'
+ )
+ mgrtype = mgrtypes[0]
+ else:
+ mgrtype = gdb.lookup_type(mgrname)
+ self._contained_type = mgrtype.template_argument(0)
valptr = None
if '::_Manager_internal' in mgrname:
- valptr = self.val['_M_storage']['_M_buffer'].address
+ valptr = self._val['_M_storage']['_M_buffer'].address
elif '::_Manager_external' in mgrname:
- valptr = self.val['_M_storage']['_M_ptr']
+ valptr = self._val['_M_storage']['_M_ptr']
else:
- raise ValueError("Unknown manager function in %s" % self.typename)
- contained_value = valptr.cast(self.contained_type.pointer()).dereference()
+ raise ValueError(
+ "Unknown manager function in %s" % self._typename)
+ contained_value = valptr.cast(
+ self._contained_type.pointer()).dereference()
visualizer = gdb.default_visualizer(contained_value)
- super(StdExpAnyPrinter, self).__init__ (contained_value, visualizer)
-
- def to_string (self):
- if self.contained_type is None:
- return '%s [no contained value]' % self.typename
- desc = "%s containing " % self.typename
- if hasattr (self.visualizer, 'children'):
- return desc + self.visualizer.to_string ()
- valtype = self._recognize (self.contained_type)
+ super(StdExpAnyPrinter, self).__init__(contained_value, visualizer)
+
+ def to_string(self):
+ if self._contained_type is None:
+ return '%s [no contained value]' % self._typename
+ desc = "%s containing " % self._typename
+ if hasattr(self._visualizer, 'children'):
+ return desc + self._visualizer.to_string()
+ valtype = self._recognize(self._contained_type)
return desc + strip_versioned_namespace(str(valtype))
+ @staticmethod
+ def _string_types():
+ # This lookup for std::string might return the __cxx11 version,
+ # but that's not necessarily the one used by the std::any
+ # manager function we're trying to find.
+ strings = {str(gdb.lookup_type('std::string').strip_typedefs())}
+ # So also consider all the other possible std::string types!
+ s = 'basic_string<char, std::char_traits<char>, std::allocator<char> >'
+ quals = ['std::', 'std::__cxx11::',
+ 'std::' + _versioned_namespace]
+ strings |= {q + s for q in quals} # set of unique strings
+ return strings
+
+
class StdExpOptionalPrinter(SingleObjContainerPrinter):
- "Print a std::optional or std::experimental::optional"
-
- def __init__ (self, typename, val):
- valtype = self._recognize (val.type.template_argument(0))
- self.typename = strip_versioned_namespace(typename)
- self.typename = re.sub('^std::(experimental::|)(fundamentals_v\d::|)(.*)', r'std::\1\3<%s>' % valtype, self.typename, 1)
- if not self.typename.startswith('std::experimental'):
- val = val['_M_payload']
- self.val = val
- contained_value = val['_M_payload'] if self.val['_M_engaged'] else None
- visualizer = gdb.default_visualizer (val['_M_payload'])
- super (StdExpOptionalPrinter, self).__init__ (contained_value, visualizer)
-
- def to_string (self):
- if self.contained_value is None:
- return "%s [no contained value]" % self.typename
- if hasattr (self.visualizer, 'children'):
- return "%s containing %s" % (self.typename,
- self.visualizer.to_string())
- return self.typename
+ """Print a std::optional or std::experimental::optional."""
+
+ def __init__(self, typename, val):
+ self._typename = strip_versioned_namespace(typename)
+ self._typename = strip_fundts_namespace(self._typename)
+ payload = val['_M_payload']
+ if self._typename.startswith('std::experimental'):
+ engaged = val['_M_engaged']
+ contained_value = payload
+ else:
+ engaged = payload['_M_engaged']
+ contained_value = payload['_M_payload']
+ try:
+ # Since GCC 9
+ contained_value = contained_value['_M_value']
+ except:
+ pass
+ visualizer = gdb.default_visualizer(contained_value)
+ if not engaged:
+ contained_value = None
+ super(StdExpOptionalPrinter, self).__init__(
+ contained_value, visualizer)
+
+ def to_string(self):
+ if self._contained_value is None:
+ return "%s [no contained value]" % self._typename
+ if hasattr(self._visualizer, 'children'):
+ return "%s containing %s" % (self._typename,
+ self._visualizer.to_string())
+ return self._typename
+
class StdVariantPrinter(SingleObjContainerPrinter):
- "Print a std::variant"
+ """Print a std::variant."""
def __init__(self, typename, val):
alternatives = get_template_arg_list(val.type)
- self.typename = strip_versioned_namespace(typename)
- self.typename = "%s<%s>" % (self.typename, ', '.join([self._recognize(alt) for alt in alternatives]))
- self.index = val['_M_index']
- if self.index >= len(alternatives):
- self.contained_type = None
+ self._typename = strip_versioned_namespace(typename)
+ self._index = val['_M_index']
+ if self._index >= len(alternatives):
+ self._contained_type = None
contained_value = None
visualizer = None
else:
- self.contained_type = alternatives[int(self.index)]
+ self._contained_type = alternatives[int(self._index)]
addr = val['_M_u']['_M_first']['_M_storage'].address
- contained_value = addr.cast(self.contained_type.pointer()).dereference()
+ contained_value = addr.cast(
+ self._contained_type.pointer()).dereference()
visualizer = gdb.default_visualizer(contained_value)
- super (StdVariantPrinter, self).__init__(contained_value, visualizer, 'array')
+ super(StdVariantPrinter, self).__init__(
+ contained_value, visualizer, 'array')
def to_string(self):
- if self.contained_value is None:
- return "%s [no contained value]" % self.typename
- if hasattr(self.visualizer, 'children'):
- return "%s [index %d] containing %s" % (self.typename, self.index,
- self.visualizer.to_string())
- return "%s [index %d]" % (self.typename, self.index)
+ if self._contained_value is None:
+ return "%s [no contained value]" % self._typename
+ if hasattr(self._visualizer, 'children'):
+ return "%s [index %d] containing %s" % (self._typename, self._index,
+ self._visualizer.to_string())
+ return "%s [index %d]" % (self._typename, self._index)
+
class StdNodeHandlePrinter(SingleObjContainerPrinter):
- "Print a container node handle"
+ """Print a container node handle."""
def __init__(self, typename, val):
- self.value_type = val.type.template_argument(1)
+ self._value_type = val.type.template_argument(1)
nodetype = val.type.template_argument(2).template_argument(0)
- self.is_rb_tree_node = is_specialization_of(nodetype.name, '_Rb_tree_node')
- self.is_map_node = val.type.template_argument(0) != self.value_type
+ self._is_rb_tree_node = is_specialization_of(
+ nodetype.name, '_Rb_tree_node')
+ self._is_map_node = val.type.template_argument(0) != self._value_type
nodeptr = val['_M_ptr']
if nodeptr:
- if self.is_rb_tree_node:
- contained_value = get_value_from_Rb_tree_node(nodeptr.dereference())
+ if self._is_rb_tree_node:
+ contained_value = get_value_from_Rb_tree_node(
+ nodeptr.dereference())
else:
contained_value = get_value_from_aligned_membuf(nodeptr['_M_storage'],
- self.value_type)
+ self._value_type)
visualizer = gdb.default_visualizer(contained_value)
else:
contained_value = None
visualizer = None
optalloc = val['_M_alloc']
- self.alloc = optalloc['_M_payload'] if optalloc['_M_engaged'] else None
+ self._alloc = optalloc['_M_payload'] if optalloc['_M_engaged'] else None
super(StdNodeHandlePrinter, self).__init__(contained_value, visualizer,
'array')
def to_string(self):
desc = 'node handle for '
- if not self.is_rb_tree_node:
+ if not self._is_rb_tree_node:
desc += 'unordered '
- if self.is_map_node:
- desc += 'map';
+ if self._is_map_node:
+ desc += 'map'
else:
- desc += 'set';
+ desc += 'set'
- if self.contained_value:
+ if self._contained_value:
desc += ' with element'
- if hasattr(self.visualizer, 'children'):
- return "%s = %s" % (desc, self.visualizer.to_string())
+ if hasattr(self._visualizer, 'children'):
+ return "%s = %s" % (desc, self._visualizer.to_string())
return desc
else:
return 'empty %s' % desc
-class StdExpStringViewPrinter:
- "Print a std::basic_string_view or std::experimental::basic_string_view"
- def __init__ (self, typename, val):
- self.val = val
+class StdExpStringViewPrinter(printer_base):
+ """
+ Print a std::basic_string_view or std::experimental::basic_string_view
+ """
+
+ def __init__(self, typename, val):
+ self._val = val
- def to_string (self):
- ptr = self.val['_M_str']
- len = self.val['_M_len']
- if hasattr (ptr, "lazy_string"):
- return ptr.lazy_string (length = len)
- return ptr.string (length = len)
+ def to_string(self):
+ ptr = self._val['_M_str']
+ len = self._val['_M_len']
+ if hasattr(ptr, "lazy_string"):
+ return ptr.lazy_string(length=len)
+ return ptr.string(length=len)
- def display_hint (self):
+ def display_hint(self):
return 'string'
-class StdExpPathPrinter:
- "Print a std::experimental::filesystem::path or std::filesystem::path"
- def __init__ (self, typename, val):
- self.val = val
- self.typename = typename
- start = self.val['_M_cmpts']['_M_impl']['_M_start']
- finish = self.val['_M_cmpts']['_M_impl']['_M_finish']
- self.num_cmpts = int (finish - start)
+class StdExpPathPrinter(printer_base):
+ """Print a std::experimental::filesystem::path."""
+
+ def __init__(self, typename, val):
+ self._val = val
+ self._typename = typename
+ start = self._val['_M_cmpts']['_M_impl']['_M_start']
+ finish = self._val['_M_cmpts']['_M_impl']['_M_finish']
+ self._num_cmpts = int(finish - start)
def _path_type(self):
- t = str(self.val['_M_type'])
+ t = str(self._val['_M_type'])
if t[-9:] == '_Root_dir':
return "root-directory"
if t[-10:] == '_Root_name':
return "root-name"
return None
- def to_string (self):
- path = "%s" % self.val ['_M_pathname']
- if self.num_cmpts == 0:
+ def to_string(self):
+ path = "%s" % self._val['_M_pathname']
+ if self._num_cmpts == 0:
t = self._path_type()
if t:
path = '%s [%s]' % (path, t)
- return "filesystem::path %s" % path
+ return "experimental::filesystem::path %s" % path
class _iterator(Iterator):
def __init__(self, cmpts, pathtype):
- self.pathtype = pathtype
- self.item = cmpts['_M_impl']['_M_start']
- self.finish = cmpts['_M_impl']['_M_finish']
- self.count = 0
+ self._pathtype = pathtype
+ self._item = cmpts['_M_impl']['_M_start']
+ self._finish = cmpts['_M_impl']['_M_finish']
+ self._count = 0
+
+ def __iter__(self):
+ return self
+
+ def __next__(self):
+ if self._item == self._finish:
+ raise StopIteration
+ item = self._item.dereference()
+ count = self._count
+ self._count = self._count + 1
+ self._item = self._item + 1
+ path = item['_M_pathname']
+ t = StdExpPathPrinter(self._pathtype, item)._path_type()
+ if not t:
+ t = count
+ return ('[%s]' % t, path)
+
+ def children(self):
+ return self._iterator(self._val['_M_cmpts'], self._typename)
+
+
+class StdPathPrinter(printer_base):
+ """Print a std::filesystem::path."""
+
+ def __init__(self, typename, val):
+ self._val = val
+ self._typename = typename
+ impl = unique_ptr_get(self._val['_M_cmpts']['_M_impl'])
+ self._type = impl.cast(gdb.lookup_type('uintptr_t')) & 3
+ if self._type == 0:
+ self._impl = impl
+ else:
+ self._impl = None
+
+ def _path_type(self):
+ t = str(self._type.cast(gdb.lookup_type(self._typename + '::_Type')))
+ if t[-9:] == '_Root_dir':
+ return "root-directory"
+ if t[-10:] == '_Root_name':
+ return "root-name"
+ return None
+
+ def to_string(self):
+ path = "%s" % self._val['_M_pathname']
+ if self._type != 0:
+ t = self._path_type()
+ if t:
+ path = '%s [%s]' % (path, t)
+ return "filesystem::path %s" % path
+
+ class _iterator(Iterator):
+ def __init__(self, impl, pathtype):
+ self._pathtype = pathtype
+ if impl:
+ # We can't access _Impl::_M_size because _Impl is incomplete
+ # so cast to int* to access the _M_size member at offset zero,
+ int_type = gdb.lookup_type('int')
+ cmpt_type = gdb.lookup_type(pathtype + '::_Cmpt')
+ char_type = gdb.lookup_type('char')
+ impl = impl.cast(int_type.pointer())
+ size = impl.dereference()
+ #self._capacity = (impl + 1).dereference()
+ if hasattr(gdb.Type, 'alignof'):
+ sizeof_Impl = max(2 * int_type.sizeof, cmpt_type.alignof)
+ else:
+ sizeof_Impl = 2 * int_type.sizeof
+ begin = impl.cast(char_type.pointer()) + sizeof_Impl
+ self._item = begin.cast(cmpt_type.pointer())
+ self._finish = self._item + size
+ self._count = 0
+ else:
+ self._item = None
+ self._finish = None
def __iter__(self):
return self
def __next__(self):
- if self.item == self.finish:
+ if self._item == self._finish:
raise StopIteration
- item = self.item.dereference()
- count = self.count
- self.count = self.count + 1
- self.item = self.item + 1
+ item = self._item.dereference()
+ count = self._count
+ self._count = self._count + 1
+ self._item = self._item + 1
path = item['_M_pathname']
- t = StdExpPathPrinter(self.pathtype, item)._path_type()
+ t = StdPathPrinter(self._pathtype, item)._path_type()
if not t:
t = count
return ('[%s]' % t, path)
def children(self):
- return self._iterator(self.val['_M_cmpts'], self.typename)
+ return self._iterator(self._impl, self._typename)
-class StdPairPrinter:
- "Print a std::pair object, with 'first' and 'second' as children"
+class StdPairPrinter(printer_base):
+ """Print a std::pair object, with 'first' and 'second' as children."""
def __init__(self, typename, val):
- self.val = val
+ self._val = val
class _iter(Iterator):
- "An iterator for std::pair types. Returns 'first' then 'second'."
+ """An iterator for std::pair types. Returns 'first' then 'second'."""
def __init__(self, val):
- self.val = val
- self.which = 'first'
+ self._val = val
+ self._which = 'first'
def __iter__(self):
return self
def __next__(self):
- if self.which is None:
+ if self._which is None:
raise StopIteration
- which = self.which
+ which = self._which
if which == 'first':
- self.which = 'second'
+ self._which = 'second'
else:
- self.which = None
- return (which, self.val[which])
+ self._which = None
+ return (which, self._val[which])
def children(self):
- return self._iter(self.val)
+ return self._iter(self._val)
def to_string(self):
return None
+class StdCmpCatPrinter(printer_base):
+ """Print a comparison category object."""
+
+ def __init__(self, typename, val):
+ self._typename = typename[typename.rfind(':') + 1:]
+ self._val = val['_M_value']
+
+ def to_string(self):
+ if self._typename == 'strong_ordering' and self._val == 0:
+ name = 'equal'
+ else:
+ names = {2: 'unordered', -1: 'less', 0: 'equivalent', 1: 'greater'}
+ name = names[int(self._val)]
+ return 'std::{}::{}'.format(self._typename, name)
+
+
+class StdErrorCodePrinter(printer_base):
+ """Print a std::error_code or std::error_condition."""
+
+ _system_is_posix = None # Whether std::system_category() use errno values.
+
+ def __init__(self, typename, val):
+ self._val = val
+ self._typename = strip_versioned_namespace(typename)
+ # Do this only once ...
+ if StdErrorCodePrinter._system_is_posix is None:
+ try:
+ import posix
+ StdErrorCodePrinter._system_is_posix = True
+ except ImportError:
+ StdErrorCodePrinter._system_is_posix = False
+
+ @staticmethod
+ def _find_errc_enum(name):
+ typ = gdb.lookup_type(name)
+ if typ is not None and typ.code == gdb.TYPE_CODE_ENUM:
+ return typ
+ return None
+
+ @classmethod
+ def _find_standard_errc_enum(cls, name):
+ for ns in ['', _versioned_namespace]:
+ try:
+ qname = 'std::{}{}'.format(ns, name)
+ return cls._find_errc_enum(qname)
+ except RuntimeError:
+ pass
+
+ @classmethod
+ def _match_net_ts_category(cls, cat):
+ net_cats = ['stream', 'socket', 'ip::resolver']
+ for c in net_cats:
+ func = c + '_category()'
+ for ns in ['', _versioned_namespace]:
+ ns = 'std::{}experimental::net::v1'.format(ns)
+ sym = gdb.lookup_symbol('{}::{}::__c'.format(ns, func))[0]
+ if sym is not None:
+ if cat == sym.value().address:
+ name = 'net::' + func
+ enum = cls._find_errc_enum('{}::{}_errc'.format(ns, c))
+ return (name, enum)
+ return (None, None)
+
+ @classmethod
+ def _category_info(cls, cat):
+ """Return details of a std::error_category."""
+
+ name = None
+ enum = None
+ is_errno = False
+
+ # Try these first, or we get "warning: RTTI symbol not found" when
+ # using cat.dynamic_type on the local class types for Net TS
+ # categories.
+ func, enum = cls._match_net_ts_category(cat)
+ if func is not None:
+ return (None, func, enum, is_errno)
+
+ # This might give a warning for a program-defined category defined as
+ # a local class, but there doesn't seem to be any way to avoid that.
+ typ = cat.dynamic_type.target()
+ # Shortcuts for the known categories defined by libstdc++.
+ if typ.tag.endswith('::generic_error_category'):
+ name = 'generic'
+ is_errno = True
+ if typ.tag.endswith('::system_error_category'):
+ name = 'system'
+ is_errno = cls._system_is_posix
+ if typ.tag.endswith('::future_error_category'):
+ name = 'future'
+ enum = cls._find_standard_errc_enum('future_errc')
+ if typ.tag.endswith('::io_error_category'):
+ name = 'io'
+ enum = cls._find_standard_errc_enum('io_errc')
+
+ if name is None:
+ try:
+ # Want to call std::error_category::name() override, but it's
+ # unsafe: https://sourceware.org/bugzilla/show_bug.cgi?id=28856
+ # gdb.set_convenience_variable('__cat', cat)
+ # return '"%s"' % gdb.parse_and_eval('$__cat->name()').string()
+ pass
+ except:
+ pass
+ return (name, typ.tag, enum, is_errno)
+
+ @staticmethod
+ def _unqualified_name(name):
+ """
+ Strip any nested-name-specifier from name to give an unqualified name.
+ """
+ return name.split('::')[-1]
+
+ def to_string(self):
+ value = self._val['_M_value']
+ cat = self._val['_M_cat']
+ name, alt_name, enum, is_errno = self._category_info(cat)
+ if value == 0:
+ default_cats = {'error_code': 'system',
+ 'error_condition': 'generic'}
+ if name == default_cats[self._unqualified_name(self._typename)]:
+ return self._typename + ' = { }' # default-constructed value
+
+ strval = str(value)
+ if is_errno and value != 0:
+ try:
+ strval = errno.errorcode[int(value)]
+ except:
+ pass
+ elif enum is not None:
+ strval = self._unqualified_name(str(value.cast(enum)))
+
+ if name is not None:
+ name = '"%s"' % name
+ else:
+ name = alt_name
+ return '%s = {%s: %s}' % (self._typename, name, strval)
+
+
+class StdRegexStatePrinter(printer_base):
+ """Print a state node in the NFA for a std::regex."""
+
+ def __init__(self, typename, val):
+ self._val = val
+ self._typename = typename
+
+ def to_string(self):
+ opcode = str(self._val['_M_opcode'])
+ if opcode:
+ opcode = opcode[25:]
+ next_id = self._val['_M_next']
+
+ variants = {'repeat': 'alt', 'alternative': 'alt',
+ 'subexpr_begin': 'subexpr', 'subexpr_end': 'subexpr',
+ 'line_begin_assertion': None, 'line_end_assertion': None,
+ 'word_boundary': 'neg', 'subexpr_lookahead': 'neg',
+ 'backref': 'backref_index',
+ 'match': None, 'accept': None,
+ 'dummy': None, 'unknown': None
+ }
+ v = variants[opcode]
+
+ s = "opcode={}, next={}".format(opcode, next_id)
+ if v is not None and self._val['_M_' + v] is not None:
+ s = "{}, {}={}".format(s, v, self._val['_M_' + v])
+ return "{%s}" % (s)
+
+
+class StdSpanPrinter(printer_base):
+ """Print a std::span."""
+
+ class _iterator(Iterator):
+ def __init__(self, begin, size):
+ self._count = 0
+ self._begin = begin
+ self._size = size
+
+ def __iter__(self):
+ return self
+
+ def __next__(self):
+ if self._count == self._size:
+ raise StopIteration
+
+ count = self._count
+ self._count = self._count + 1
+ return '[%d]' % count, (self._begin + count).dereference()
+
+ def __init__(self, typename, val):
+ self._typename = strip_versioned_namespace(typename)
+ self._val = val
+ size_max = gdb.parse_and_eval('static_cast<std::size_t>(-1)')
+ if val.type.template_argument(1) == size_max:
+ self._size = val['_M_extent']['_M_extent_value']
+ else:
+ self._size = val.type.template_argument(1)
+
+ def to_string(self):
+ return '%s of length %d' % (self._typename, self._size)
+
+ def children(self):
+ return self._iterator(self._val['_M_ptr'], self._size)
+
+ def display_hint(self):
+ return 'array'
+
+
+class StdInitializerListPrinter(printer_base):
+ """Print a std::initializer_list."""
+
+ def __init__(self, typename, val):
+ self._typename = typename
+ self._val = val
+ self._size = val['_M_len']
+
+ def to_string(self):
+ return '%s of length %d' % (self._typename, self._size)
+
+ def children(self):
+ return StdSpanPrinter._iterator(self._val['_M_array'], self._size)
+
+ def display_hint(self):
+ return 'array'
+
+
+class StdAtomicPrinter(printer_base):
+ """Print a std:atomic."""
+
+ def __init__(self, typename, val):
+ self._typename = strip_versioned_namespace(typename)
+ self._val = val
+ self._shptr_printer = None
+ self._value_type = self._val.type.template_argument(0)
+ if self._value_type.tag is not None:
+ typ = strip_versioned_namespace(self._value_type.tag)
+ if (typ.startswith('std::shared_ptr<')
+ or typ.startswith('std::weak_ptr<')):
+ impl = val['_M_impl']
+ self._shptr_printer = SharedPointerPrinter(typename, impl)
+ self.children = self._shptr_children
+
+ def _shptr_children(self):
+ return SmartPtrIterator(self._shptr_printer._pointer)
+
+ def to_string(self):
+ if self._shptr_printer is not None:
+ return self._shptr_printer.to_string()
+
+ if self._value_type.code == gdb.TYPE_CODE_INT:
+ val = self._val['_M_i']
+ elif self._value_type.code == gdb.TYPE_CODE_FLT:
+ val = self._val['_M_fp']
+ elif self._value_type.code == gdb.TYPE_CODE_PTR:
+ val = self._val['_M_b']['_M_p']
+ elif self._value_type.code == gdb.TYPE_CODE_BOOL:
+ val = self._val['_M_base']['_M_i']
+ else:
+ val = self._val['_M_i']
+ return '%s<%s> = { %s }' % (self._typename, str(self._value_type), val)
+
+
+class StdFormatArgsPrinter(printer_base):
+ """Print a std::basic_format_args."""
+ # TODO: add printer for basic_format_arg<Context> and print out children.
+ # TODO: add printer for __format::_ArgStore<Context, Args...>.
+
+ def __init__(self, typename, val):
+ self._typename = strip_versioned_namespace(typename)
+ self._val = val
+
+ def to_string(self):
+ targs = get_template_arg_list(self._val.type)
+ char_type = get_template_arg_list(targs[0])[1]
+ if char_type == gdb.lookup_type('char'):
+ typ = 'std::format_args'
+ elif char_type == gdb.lookup_type('wchar_t'):
+ typ = 'std::wformat_args'
+ else:
+ typ = 'std::basic_format_args'
+
+ size = self._val['_M_packed_size']
+ if size == 1:
+ return "%s with 1 argument" % (typ)
+ if size == 0:
+ size = self._val['_M_unpacked_size']
+ return "%s with %d arguments" % (typ, size)
+
+
+class StdChronoDurationPrinter(printer_base):
+ """Print a std::chrono::duration."""
+
+ def __init__(self, typename, val):
+ self._typename = strip_versioned_namespace(typename)
+ self._val = val
+
+ def _ratio(self):
+ # TODO use reduced period i.e. duration::period
+ period = self._val.type.template_argument(1)
+ num = period.template_argument(0)
+ den = period.template_argument(1)
+ return (num, den)
+
+ def _suffix(self):
+ num, den = self._ratio()
+ if num == 1:
+ if den == 1:
+ return 's'
+ if den == 1000:
+ return 'ms'
+ if den == 1000000:
+ return 'us'
+ if den == 1000000000:
+ return 'ns'
+ elif den == 1:
+ if num == 60:
+ return 'min'
+ if num == 3600:
+ return 'h'
+ if num == 86400:
+ return 'd'
+ return '[{}]s'.format(num)
+ return "[{}/{}]s".format(num, den)
+
+ def to_string(self):
+ r = self._val['__r']
+ if r.type.strip_typedefs().code == gdb.TYPE_CODE_FLT:
+ r = "%g" % r
+ return "std::chrono::duration = {{ {}{} }}".format(r, self._suffix())
+
+
+class StdChronoTimePointPrinter(printer_base):
+ """Print a std::chrono::time_point."""
+
+ def __init__(self, typename, val):
+ self._typename = strip_versioned_namespace(typename)
+ self._val = val
+
+ def _clock(self):
+ clock = self._val.type.template_argument(0)
+ name = strip_versioned_namespace(clock.name)
+ if name == 'std::chrono::_V2::system_clock' \
+ or name == 'std::chrono::system_clock':
+ return ('std::chrono::sys_time', 0)
+ # XXX need to remove leap seconds from utc, gps, and tai
+ if name == 'std::chrono::utc_clock':
+ return ('std::chrono::utc_time', None) # XXX
+ if name == 'std::chrono::gps_clock':
+ return ('std::chrono::gps_time', None) # XXX 315964809
+ if name == 'std::chrono::tai_clock':
+ return ('std::chrono::tai_time', None) # XXX -378691210
+ if name == 'std::filesystem::__file_clock':
+ return ('std::chrono::file_time', 6437664000)
+ if name == 'std::chrono::local_t':
+ return ('std::chrono::local_time', 0)
+ return ('{} time_point'.format(name), None)
+
+ def to_string(self, abbrev=False):
+ clock, offset = self._clock()
+ d = self._val['__d']
+ r = d['__r']
+ printer = StdChronoDurationPrinter(d.type.name, d)
+ suffix = printer._suffix()
+ time = ''
+ if offset is not None:
+ num, den = printer._ratio()
+ secs = (r * num / den) + offset
+ try:
+ dt = datetime.datetime.fromtimestamp(secs, _utc_timezone)
+ time = ' [{:%Y-%m-%d %H:%M:%S}]'.format(dt)
+ except:
+ pass
+ s = '%d%s%s' % (r, suffix, time)
+ if abbrev:
+ return s
+ return '%s = { %s }' % (clock, s)
+
+
+class StdChronoZonedTimePrinter(printer_base):
+ """Print a std::chrono::zoned_time."""
+
+ def __init__(self, typename, val):
+ self._typename = strip_versioned_namespace(typename)
+ self._val = val
+
+ def to_string(self):
+ zone = self._val['_M_zone'].dereference()['_M_name']
+ time = self._val['_M_tp']
+ printer = StdChronoTimePointPrinter(time.type.name, time)
+ time = printer.to_string(True)
+ return 'std::chrono::zoned_time = {{ {} {} }}'.format(zone, time)
+
+
+months = [None, 'January', 'February', 'March', 'April', 'May', 'June',
+ 'July', 'August', 'September', 'October', 'November', 'December']
+
+weekdays = ['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday',
+ 'Saturday', 'Sunday']
+
+
+class StdChronoCalendarPrinter(printer_base):
+ """Print a std::chrono::day, std::chrono::month, std::chrono::year etc."""
+
+ def __init__(self, typename, val):
+ self._typename = strip_versioned_namespace(typename)
+ self._val = val
+
+ def to_string(self):
+ val = self._val
+ typ = self._typename
+ if 'month' in typ and typ != 'std::chrono::year_month_day_last':
+ m = val['_M_m']
+ if typ.startswith('std::chrono::year'):
+ y = val['_M_y']
+
+ if typ == 'std::chrono::day':
+ return '{}'.format(int(val['_M_d']))
+ if typ == 'std::chrono::month':
+ if m < 1 or m >= len(months):
+ return "%d is not a valid month" % m
+ return months[m]
+ if typ == 'std::chrono::year':
+ return '{}y'.format(y)
+ if typ == 'std::chrono::weekday':
+ wd = val['_M_wd']
+ if wd < 0 or wd >= len(weekdays):
+ return "%d is not a valid weekday" % wd
+ return '{}'.format(weekdays[wd])
+ if typ == 'std::chrono::weekday_indexed':
+ return '{}[{}]'.format(val['_M_wd'], int(val['_M_index']))
+ if typ == 'std::chrono::weekday_last':
+ return '{}[last]'.format(val['_M_wd'])
+ if typ == 'std::chrono::month_day':
+ return '{}/{}'.format(m, val['_M_d'])
+ if typ == 'std::chrono::month_day_last':
+ return '{}/last'.format(m)
+ if typ == 'std::chrono::month_weekday':
+ return '{}/{}'.format(m, val['_M_wdi'])
+ if typ == 'std::chrono::month_weekday_last':
+ return '{}/{}'.format(m, val['_M_wdl'])
+ if typ == 'std::chrono::year_month':
+ return '{}/{}'.format(y, m)
+ if typ == 'std::chrono::year_month_day':
+ return '{}/{}/{}'.format(y, m, val['_M_d'])
+ if typ == 'std::chrono::year_month_day_last':
+ return '{}/{}'.format(y, val['_M_mdl'])
+ if typ == 'std::chrono::year_month_weekday':
+ return '{}/{}/{}'.format(y, m, val['_M_wdi'])
+ if typ == 'std::chrono::year_month_weekday_last':
+ return '{}/{}/{}'.format(y, m, val['_M_wdl'])
+ if typ.startswith('std::chrono::hh_mm_ss'):
+ fract = ''
+ if val['fractional_width'] != 0:
+ fract = '.{:0{}d}'.format(int(val['_M_ss']['_M_r']),
+ int(val['fractional_width']))
+ h = int(val['_M_h']['__r'])
+ m = int(val['_M_m']['__r'])
+ s = int(val['_M_s']['__r'])
+ if val['_M_is_neg']:
+ h = -h
+ return '{:02}:{:02}:{:02}{}'.format(h, m, s, fract)
+
+
+class StdChronoTimeZonePrinter(printer_base):
+ """Print a chrono::time_zone or chrono::time_zone_link."""
+
+ def __init__(self, typename, val):
+ self._typename = strip_versioned_namespace(typename)
+ self._val = val
+
+ def to_string(self):
+ str = '%s = %s' % (self._typename, self._val['_M_name'])
+ if self._typename.endswith("_link"):
+ str += ' -> %s' % (self._val['_M_target'])
+ return str
+
+
+class StdChronoLeapSecondPrinter(printer_base):
+ """Print a chrono::leap_second."""
+
+ def __init__(self, typename, val):
+ self._typename = strip_versioned_namespace(typename)
+ self._val = val
+
+ def to_string(self):
+ date = self._val['_M_s']['__r']
+ neg = '+-'[date < 0]
+ return '%s %d (%c)' % (self._typename, abs(date), neg)
+
+
+class StdChronoTzdbPrinter(printer_base):
+ """Print a chrono::tzdb."""
+
+ def __init__(self, typename, val):
+ self._typename = strip_versioned_namespace(typename)
+ self._val = val
+
+ def to_string(self):
+ return '%s %s' % (self._typename, self._val['version'])
+
+
+class StdChronoTimeZoneRulePrinter(printer_base):
+ """Print a chrono::time_zone rule."""
+
+ def __init__(self, typename, val):
+ self._typename = strip_versioned_namespace(typename)
+ self._val = val
+
+ def to_string(self):
+ on = self._val['on']
+ kind = on['kind']
+ month = months[on['month']]
+ suffixes = {1: 'st', 2: 'nd', 3: 'rd',
+ 21: 'st', 22: 'nd', 23: 'rd', 31: 'st'}
+ day = on['day_of_month']
+ ordinal_day = '{}{}'.format(day, suffixes.get(day, 'th'))
+ if kind == 0: # DayOfMonth
+ start = '{} {}'.format(month, ordinal_day)
+ else:
+ weekday = weekdays[on['day_of_week']]
+ if kind == 1: # LastWeekDay
+ start = 'last {} in {}'.format(weekday, month)
+ else:
+ if kind == 2: # LessEq
+ direction = ('last', '<=')
+ else:
+ direction = ('first', '>=')
+ day = on['day_of_month']
+ start = '{} {} {} {} {}'.format(direction[0], weekday,
+ direction[1], month,
+ ordinal_day)
+ return 'time_zone rule {} from {} to {} starting on {}'.format(
+ self._val['name'], self._val['from'], self._val['to'], start)
+
+
+class StdLocalePrinter(printer_base):
+ """Print a std::locale."""
+
+ def __init__(self, typename, val):
+ self._val = val
+ self._typename = typename
+
+ def to_string(self):
+ names = self._val['_M_impl']['_M_names']
+ mod = ''
+ if names[0] == 0:
+ name = '*'
+ else:
+ cats = gdb.parse_and_eval(self._typename + '::_S_categories')
+ ncat = gdb.parse_and_eval(self._typename + '::_S_categories_size')
+ n = names[0].string()
+ cat = cats[0].string()
+ name = '{}={}'.format(cat, n)
+ cat_names = {cat: n}
+ i = 1
+ while i < ncat and names[i] != 0:
+ n = names[i].string()
+ cat = cats[i].string()
+ name = '{};{}={}'.format(name, cat, n)
+ cat_names[cat] = n
+ i = i + 1
+ uniq_names = set(cat_names.values())
+ if len(uniq_names) == 1:
+ name = n
+ elif len(uniq_names) == 2:
+ n1, n2 = (uniq_names)
+ name_list = list(cat_names.values())
+ other = None
+ if name_list.count(n1) == 1:
+ name = n2
+ other = n1
+ elif name_list.count(n2) == 1:
+ name = n1
+ other = n2
+ if other is not None:
+ cat = next(c for c, n in cat_names.items() if n == other)
+ mod = ' with "{}={}"'.format(cat, other)
+ return 'std::locale = "{}"{}'.format(name, mod)
+
+class StdIntegralConstantPrinter(printer_base):
+ """Print a std::true_type or std::false_type."""
+
+ def __init__(self, typename, val):
+ self._val = val
+ self._typename = typename
+
+ def to_string(self):
+ value_type = self._val.type.template_argument(0)
+ value = self._val.type.template_argument(1)
+ if value_type.code == gdb.TYPE_CODE_BOOL:
+ if value:
+ return "std::true_type"
+ else:
+ return "std::false_type"
+ typename = strip_versioned_namespace(self._typename)
+ return "{}<{}, {}>".format(typename, value_type, value)
+
+class StdTextEncodingPrinter(printer_base):
+ """Print a std::text_encoding."""
+
+ def __init__(self, typename, val):
+ self._val = val
+ self._typename = typename
+
+ def to_string(self):
+ rep = self._val['_M_rep'].dereference()
+ if rep['_M_id'] == 1:
+ return self._val['_M_name']
+ if rep['_M_id'] == 2:
+ return 'unknown'
+ return rep['_M_name']
+
# A "regular expression" printer which conforms to the
# "SubPrettyPrinter" protocol from gdb.printing.
class RxPrinter(object):
def __init__(self, name, function):
super(RxPrinter, self).__init__()
self.name = name
- self.function = function
+ self._function = function
self.enabled = True
def invoke(self, value):
@@ -1315,36 +2360,40 @@ class RxPrinter(object):
return None
if value.type.code == gdb.TYPE_CODE_REF:
- if hasattr(gdb.Value,"referenced_value"):
+ if hasattr(gdb.Value, "referenced_value"):
value = value.referenced_value()
- return self.function(self.name, value)
+ return self._function(self.name, value)
# A pretty-printer that conforms to the "PrettyPrinter" protocol from
# gdb.printing. It can also be used directly as an old-style printer.
+
+
class Printer(object):
def __init__(self, name):
super(Printer, self).__init__()
self.name = name
- self.subprinters = []
- self.lookup = {}
+ self._subprinters = []
+ self._lookup = {}
self.enabled = True
- self.compiled_rx = re.compile('^([a-zA-Z0-9_:]+)(<.*>)?$')
+ self._compiled_rx = re.compile('^([a-zA-Z0-9_:]+)(<.*>)?$')
def add(self, name, function):
# A small sanity check.
# FIXME
- if not self.compiled_rx.match(name):
- raise ValueError('libstdc++ programming error: "%s" does not match' % name)
+ if not self._compiled_rx.match(name):
+ raise ValueError(
+ 'libstdc++ programming error: "%s" does not match' % name)
printer = RxPrinter(name, function)
- self.subprinters.append(printer)
- self.lookup[name] = printer
+ self._subprinters.append(printer)
+ self._lookup[name] = printer
# Add a name using _GLIBCXX_BEGIN_NAMESPACE_VERSION.
def add_version(self, base, name, function):
self.add(base + name, function)
- if _versioned_namespace:
- vbase = re.sub('^(std|__gnu_cxx)::', r'\g<0>%s' % _versioned_namespace, base)
+ if '__cxx11' not in base:
+ vbase = re.sub('^(std|__gnu_cxx)::', r'\g<0>%s' %
+ _versioned_namespace, base)
self.add(vbase + name, function)
# Add a name using _GLIBCXX_BEGIN_NAMESPACE_CONTAINER.
@@ -1356,10 +2405,10 @@ class Printer(object):
def get_basic_type(type):
# If it points to a reference, get the reference.
if type.code == gdb.TYPE_CODE_REF:
- type = type.target ()
+ type = type.target()
# Get the unqualified type, stripped of typedefs.
- type = type.unqualified ().strip_typedefs ()
+ type = type.unqualified().strip_typedefs()
return type.tag
@@ -1370,47 +2419,49 @@ class Printer(object):
# All the types we match are template types, so we can use a
# dictionary.
- match = self.compiled_rx.match(typename)
+ match = self._compiled_rx.match(typename)
if not match:
return None
basename = match.group(1)
if val.type.code == gdb.TYPE_CODE_REF:
- if hasattr(gdb.Value,"referenced_value"):
+ if hasattr(gdb.Value, "referenced_value"):
val = val.referenced_value()
- if basename in self.lookup:
- return self.lookup[basename].invoke(val)
+ if basename in self._lookup:
+ return self._lookup[basename].invoke(val)
# Cannot find a pretty printer. Return None.
return None
+
libstdcxx_printer = None
+
class TemplateTypePrinter(object):
- r"""
+ """
A type printer for class templates with default template arguments.
Recognizes specializations of class templates and prints them without
any template arguments that use a default template argument.
Type printers are recursively applied to the template arguments.
- e.g. replace "std::vector<T, std::allocator<T> >" with "std::vector<T>".
+ e.g. replace 'std::vector<T, std::allocator<T> >' with 'std::vector<T>'.
"""
def __init__(self, name, defargs):
self.name = name
- self.defargs = defargs
+ self._defargs = defargs
self.enabled = True
class _recognizer(object):
- "The recognizer class for TemplateTypePrinter."
+ """The recognizer class for TemplateTypePrinter."""
def __init__(self, name, defargs):
self.name = name
- self.defargs = defargs
- # self.type_obj = None
+ self._defargs = defargs
+ # self._type_obj = None
def recognize(self, type_obj):
"""
@@ -1433,7 +2484,7 @@ class TemplateTypePrinter(object):
# The actual template argument in the type:
targ = template_args[n]
# The default template argument for the class template:
- defarg = self.defargs.get(n)
+ defarg = self._defargs.get(n)
if defarg is not None:
# Substitute other template arguments into the default:
defarg = defarg.format(*template_args)
@@ -1470,7 +2521,7 @@ class TemplateTypePrinter(object):
if type_obj.code == gdb.TYPE_CODE_ARRAY:
type_str = self._recognize_subtype(type_obj.target())
if str(type_obj.strip_typedefs()).endswith('[]'):
- return type_str + '[]' # array of unknown bound
+ return type_str + '[]' # array of unknown bound
return "%s[%d]" % (type_str, type_obj.range()[1] + 1)
if type_obj.code == gdb.TYPE_CODE_REF:
return self._recognize_subtype(type_obj.target()) + '&'
@@ -1479,17 +2530,18 @@ class TemplateTypePrinter(object):
return self._recognize_subtype(type_obj.target()) + '&&'
type_str = gdb.types.apply_type_recognizers(
- gdb.types.get_type_recognizers(), type_obj)
+ gdb.types.get_type_recognizers(), type_obj)
if type_str:
return type_str
return str(type_obj)
def instantiate(self):
- "Return a recognizer object for this type printer."
- return self._recognizer(self.name, self.defargs)
+ """Return a recognizer object for this type printer."""
+ return self._recognizer(self.name, self._defargs)
+
def add_one_template_type_printer(obj, name, defargs):
- r"""
+ """
Add a type printer for a class template with default template arguments.
Args:
@@ -1503,78 +2555,121 @@ def add_one_template_type_printer(obj, name, defargs):
{ 2: 'std::hash<{0}>',
3: 'std::equal_to<{0}>',
4: 'std::allocator<std::pair<const {0}, {1}> >' }
-
"""
- printer = TemplateTypePrinter('std::'+name, defargs)
+ printer = TemplateTypePrinter('std::' + name, defargs)
+ gdb.types.register_type_printer(obj, printer)
+
+ # Add type printer for same type in debug namespace:
+ printer = TemplateTypePrinter('std::__debug::' + name, defargs)
gdb.types.register_type_printer(obj, printer)
- if _versioned_namespace:
+
+ if '__cxx11' not in name:
# Add second type printer for same type in versioned namespace:
ns = 'std::' + _versioned_namespace
# PR 86112 Cannot use dict comprehension here:
- defargs = dict((n, d.replace('std::', ns)) for (n,d) in defargs.items())
- printer = TemplateTypePrinter(ns+name, defargs)
+ defargs = dict((n, d.replace('std::', ns))
+ for (n, d) in defargs.items())
+ printer = TemplateTypePrinter(ns + name, defargs)
+ gdb.types.register_type_printer(obj, printer)
+
+ # Add type printer for same type in debug namespace:
+ printer = TemplateTypePrinter('std::__debug::' + name, defargs)
gdb.types.register_type_printer(obj, printer)
+
class FilteringTypePrinter(object):
- r"""
+ """
A type printer that uses typedef names for common template specializations.
Args:
- match (str): The class template to recognize.
+ template (str): The class template to recognize.
name (str): The typedef-name that will be used instead.
+ targ1 (str, optional): The first template argument. Defaults to None.
- Checks if a specialization of the class template 'match' is the same type
+ Checks if a specialization of the class template 'template' is the same type
as the typedef 'name', and prints it as 'name' instead.
e.g. if an instantiation of std::basic_istream<C, T> is the same type as
std::istream then print it as std::istream.
+
+ If targ1 is provided (not None), match only template specializations with
+ this type as the first template argument, e.g. if template='basic_string'
+ and targ1='char' then only match 'basic_string<char,...>' and not
+ 'basic_string<wchar_t,...>'. This rejects non-matching specializations
+ more quickly, without needing to do GDB type lookups.
"""
- def __init__(self, match, name):
- self.match = match
+ def __init__(self, template, name, targ1=None):
+ self._template = template
self.name = name
+ self._targ1 = targ1
self.enabled = True
class _recognizer(object):
- "The recognizer class for TemplateTypePrinter."
+ """The recognizer class for FilteringTypePrinter."""
- def __init__(self, match, name):
- self.match = match
+ def __init__(self, template, name, targ1):
+ self._template = template
self.name = name
- self.type_obj = None
+ self._targ1 = targ1
+ self._type_obj = None
def recognize(self, type_obj):
"""
- If type_obj starts with self.match and is the same type as
+ If type_obj starts with self._template and is the same type as
self.name then return self.name, otherwise None.
"""
if type_obj.tag is None:
return None
- if self.type_obj is None:
- if not type_obj.tag.startswith(self.match):
+ if self._type_obj is None:
+ if self._targ1 is not None:
+ s = '{}<{}'.format(self._template, self._targ1)
+ if not type_obj.tag.startswith(s):
+ # Filter didn't match.
+ return None
+ elif not type_obj.tag.startswith(self._template):
# Filter didn't match.
return None
+
try:
- self.type_obj = gdb.lookup_type(self.name).strip_typedefs()
+ self._type_obj = gdb.lookup_type(
+ self.name).strip_typedefs()
except:
pass
- if self.type_obj == type_obj:
+
+ if self._type_obj is None:
+ return None
+
+ t1 = gdb.types.get_basic_type(self._type_obj)
+ t2 = gdb.types.get_basic_type(type_obj)
+ if t1 == t2:
return strip_inline_namespaces(self.name)
+
+ # Workaround ambiguous typedefs matching both std:: and
+ # std::__cxx11:: symbols.
+ if self._template.split('::')[-1] == 'basic_string':
+ s1 = self._type_obj.tag.replace('__cxx11::', '')
+ s2 = type_obj.tag.replace('__cxx11::', '')
+ if s1 == s2:
+ return strip_inline_namespaces(self.name)
+
return None
def instantiate(self):
- "Return a recognizer object for this type printer."
- return self._recognizer(self.match, self.name)
+ """Return a recognizer object for this type printer."""
+ return self._recognizer(self._template, self.name, self._targ1)
-def add_one_type_printer(obj, match, name):
- printer = FilteringTypePrinter('std::' + match, 'std::' + name)
+
+def add_one_type_printer(obj, template, name, targ1=None):
+ printer = FilteringTypePrinter('std::' + template, 'std::' + name, targ1)
gdb.types.register_type_printer(obj, printer)
- if _versioned_namespace:
+ if '__cxx11' not in template:
ns = 'std::' + _versioned_namespace
- printer = FilteringTypePrinter(ns + match, ns + name)
+ printer = FilteringTypePrinter(ns + template, ns + name, targ1)
gdb.types.register_type_printer(obj, printer)
+
def register_type_printers(obj):
global _use_type_printing
@@ -1582,29 +2677,39 @@ def register_type_printers(obj):
return
# Add type printers for typedefs std::string, std::wstring etc.
- for ch in ('', 'w', 'u16', 'u32'):
- add_one_type_printer(obj, 'basic_string', ch + 'string')
+ for ch in (('', 'char'),
+ ('w', 'wchar_t'),
+ ('u8', 'char8_t'),
+ ('u16', 'char16_t'),
+ ('u32', 'char32_t')):
+ add_one_type_printer(obj, 'basic_string', ch[0] + 'string', ch[1])
+ add_one_type_printer(obj, '__cxx11::basic_string',
+ ch[0] + 'string', ch[1])
+ # Typedefs for __cxx11::basic_string used to be in namespace __cxx11:
add_one_type_printer(obj, '__cxx11::basic_string',
- '__cxx11::' + ch + 'string')
- add_one_type_printer(obj, 'basic_string_view', ch + 'string_view')
+ '__cxx11::' + ch[0] + 'string', ch[1])
+ add_one_type_printer(obj, 'basic_string_view',
+ ch[0] + 'string_view', ch[1])
# Add type printers for typedefs std::istream, std::wistream etc.
- for ch in ('', 'w'):
+ for ch in (('', 'char'), ('w', 'wchar_t')):
for x in ('ios', 'streambuf', 'istream', 'ostream', 'iostream',
'filebuf', 'ifstream', 'ofstream', 'fstream'):
- add_one_type_printer(obj, 'basic_' + x, ch + x)
+ add_one_type_printer(obj, 'basic_' + x, ch[0] + x, ch[1])
for x in ('stringbuf', 'istringstream', 'ostringstream',
'stringstream'):
- add_one_type_printer(obj, 'basic_' + x, ch + x)
- # <sstream> types are in __cxx11 namespace, but typedefs aren'x:
- add_one_type_printer(obj, '__cxx11::basic_' + x, ch + x)
+ add_one_type_printer(obj, 'basic_' + x, ch[0] + x, ch[1])
+ # <sstream> types are in __cxx11 namespace, but typedefs aren't:
+ add_one_type_printer(obj, '__cxx11::basic_' + x, ch[0] + x, ch[1])
# Add type printers for typedefs regex, wregex, cmatch, wcmatch etc.
for abi in ('', '__cxx11::'):
- for ch in ('', 'w'):
- add_one_type_printer(obj, abi + 'basic_regex', abi + ch + 'regex')
+ for ch in (('', 'char'), ('w', 'wchar_t')):
+ add_one_type_printer(obj, abi + 'basic_regex',
+ abi + ch[0] + 'regex', ch[1])
for ch in ('c', 's', 'wc', 'ws'):
- add_one_type_printer(obj, abi + 'match_results', abi + ch + 'match')
+ add_one_type_printer(
+ obj, abi + 'match_results', abi + ch + 'match')
for x in ('sub_match', 'regex_iterator', 'regex_token_iterator'):
add_one_type_printer(obj, abi + x, abi + ch + x)
@@ -1613,9 +2718,9 @@ def register_type_printers(obj):
add_one_type_printer(obj, 'fpos', 'streampos')
# Add type printers for <chrono> typedefs.
- for dur in ('nanoseconds', 'microseconds', 'milliseconds',
- 'seconds', 'minutes', 'hours'):
- add_one_type_printer(obj, 'duration', dur)
+ for dur in ('nanoseconds', 'microseconds', 'milliseconds', 'seconds',
+ 'minutes', 'hours', 'days', 'weeks', 'years', 'months'):
+ add_one_type_printer(obj, 'chrono::duration', 'chrono::' + dur)
# Add type printers for <random> typedefs.
add_one_type_printer(obj, 'linear_congruential_engine', 'minstd_rand0')
@@ -1630,47 +2735,54 @@ def register_type_printers(obj):
# Add type printers for experimental::basic_string_view typedefs.
ns = 'experimental::fundamentals_v1::'
- for ch in ('', 'w', 'u16', 'u32'):
+ for ch in (('', 'char'),
+ ('w', 'wchar_t'),
+ ('u8', 'char8_t'),
+ ('u16', 'char16_t'),
+ ('u32', 'char32_t')):
add_one_type_printer(obj, ns + 'basic_string_view',
- ns + ch + 'string_view')
+ ns + ch[0] + 'string_view', ch[1])
# Do not show defaulted template arguments in class templates.
add_one_template_type_printer(obj, 'unique_ptr',
- { 1: 'std::default_delete<{0}>' })
- add_one_template_type_printer(obj, 'deque', { 1: 'std::allocator<{0}>'})
- add_one_template_type_printer(obj, 'forward_list', { 1: 'std::allocator<{0}>'})
- add_one_template_type_printer(obj, 'list', { 1: 'std::allocator<{0}>'})
- add_one_template_type_printer(obj, '__cxx11::list', { 1: 'std::allocator<{0}>'})
- add_one_template_type_printer(obj, 'vector', { 1: 'std::allocator<{0}>'})
+ {1: 'std::default_delete<{0}>'})
+ add_one_template_type_printer(obj, 'deque', {1: 'std::allocator<{0}>'})
+ add_one_template_type_printer(
+ obj, 'forward_list', {1: 'std::allocator<{0}>'})
+ add_one_template_type_printer(obj, 'list', {1: 'std::allocator<{0}>'})
+ add_one_template_type_printer(
+ obj, '__cxx11::list', {1: 'std::allocator<{0}>'})
+ add_one_template_type_printer(obj, 'vector', {1: 'std::allocator<{0}>'})
add_one_template_type_printer(obj, 'map',
- { 2: 'std::less<{0}>',
- 3: 'std::allocator<std::pair<{0} const, {1}>>' })
+ {2: 'std::less<{0}>',
+ 3: 'std::allocator<std::pair<{0} const, {1}>>'})
add_one_template_type_printer(obj, 'multimap',
- { 2: 'std::less<{0}>',
- 3: 'std::allocator<std::pair<{0} const, {1}>>' })
+ {2: 'std::less<{0}>',
+ 3: 'std::allocator<std::pair<{0} const, {1}>>'})
add_one_template_type_printer(obj, 'set',
- { 1: 'std::less<{0}>', 2: 'std::allocator<{0}>' })
+ {1: 'std::less<{0}>', 2: 'std::allocator<{0}>'})
add_one_template_type_printer(obj, 'multiset',
- { 1: 'std::less<{0}>', 2: 'std::allocator<{0}>' })
+ {1: 'std::less<{0}>', 2: 'std::allocator<{0}>'})
add_one_template_type_printer(obj, 'unordered_map',
- { 2: 'std::hash<{0}>',
- 3: 'std::equal_to<{0}>',
- 4: 'std::allocator<std::pair<{0} const, {1}>>'})
+ {2: 'std::hash<{0}>',
+ 3: 'std::equal_to<{0}>',
+ 4: 'std::allocator<std::pair<{0} const, {1}>>'})
add_one_template_type_printer(obj, 'unordered_multimap',
- { 2: 'std::hash<{0}>',
- 3: 'std::equal_to<{0}>',
- 4: 'std::allocator<std::pair<{0} const, {1}>>'})
+ {2: 'std::hash<{0}>',
+ 3: 'std::equal_to<{0}>',
+ 4: 'std::allocator<std::pair<{0} const, {1}>>'})
add_one_template_type_printer(obj, 'unordered_set',
- { 1: 'std::hash<{0}>',
- 2: 'std::equal_to<{0}>',
- 3: 'std::allocator<{0}>'})
+ {1: 'std::hash<{0}>',
+ 2: 'std::equal_to<{0}>',
+ 3: 'std::allocator<{0}>'})
add_one_template_type_printer(obj, 'unordered_multiset',
- { 1: 'std::hash<{0}>',
- 2: 'std::equal_to<{0}>',
- 3: 'std::allocator<{0}>'})
+ {1: 'std::hash<{0}>',
+ 2: 'std::equal_to<{0}>',
+ 3: 'std::allocator<{0}>'})
-def register_libstdcxx_printers (obj):
- "Register libstdc++ pretty-printers with objfile Obj."
+
+def register_libstdcxx_printers(obj):
+ """Register libstdc++ pretty-printers with objfile Obj."""
global _use_gdb_pp
global libstdcxx_printer
@@ -1684,7 +2796,8 @@ def register_libstdcxx_printers (obj):
register_type_printers(obj)
-def build_libstdcxx_dictionary ():
+
+def build_libstdcxx_dictionary():
global libstdcxx_printer
libstdcxx_printer = Printer("libstdc++-v6")
@@ -1693,7 +2806,8 @@ def build_libstdcxx_dictionary ():
# In order from:
# http://gcc.gnu.org/onlinedocs/libstdc++/latest-doxygen/a01847.html
libstdcxx_printer.add_version('std::', 'basic_string', StdStringPrinter)
- libstdcxx_printer.add_version('std::__cxx11::', 'basic_string', StdStringPrinter)
+ libstdcxx_printer.add_version(
+ 'std::__cxx11::', 'basic_string', StdStringPrinter)
libstdcxx_printer.add_container('std::', 'bitset', StdBitsetPrinter)
libstdcxx_printer.add_container('std::', 'deque', StdDequePrinter)
libstdcxx_printer.add_container('std::', 'list', StdListPrinter)
@@ -1711,6 +2825,18 @@ def build_libstdcxx_dictionary ():
libstdcxx_printer.add_version('std::', 'unique_ptr', UniquePointerPrinter)
libstdcxx_printer.add_container('std::', 'vector', StdVectorPrinter)
# vector<bool>
+ libstdcxx_printer.add_version('std::', 'locale', StdLocalePrinter)
+
+ libstdcxx_printer.add_version('std::', 'integral_constant',
+ StdIntegralConstantPrinter)
+ libstdcxx_printer.add_version('std::', 'text_encoding',
+ StdTextEncodingPrinter)
+
+ if hasattr(gdb.Value, 'dynamic_type'):
+ libstdcxx_printer.add_version('std::', 'error_code',
+ StdErrorCodePrinter)
+ libstdcxx_printer.add_version('std::', 'error_condition',
+ StdErrorCodePrinter)
# Printer registrations for classes compiled with -D_GLIBCXX_DEBUG.
libstdcxx_printer.add('std::__debug::bitset', StdBitsetPrinter)
@@ -1719,12 +2845,7 @@ def build_libstdcxx_dictionary ():
libstdcxx_printer.add('std::__debug::map', StdMapPrinter)
libstdcxx_printer.add('std::__debug::multimap', StdMapPrinter)
libstdcxx_printer.add('std::__debug::multiset', StdSetPrinter)
- libstdcxx_printer.add('std::__debug::priority_queue',
- StdStackOrQueuePrinter)
- libstdcxx_printer.add('std::__debug::queue', StdStackOrQueuePrinter)
libstdcxx_printer.add('std::__debug::set', StdSetPrinter)
- libstdcxx_printer.add('std::__debug::stack', StdStackOrQueuePrinter)
- libstdcxx_printer.add('std::__debug::unique_ptr', UniquePointerPrinter)
libstdcxx_printer.add('std::__debug::vector', StdVectorPrinter)
# These are the TR1 and C++11 printers.
@@ -1742,8 +2863,10 @@ def build_libstdcxx_dictionary ():
libstdcxx_printer.add_container('std::', 'forward_list',
StdForwardListPrinter)
- libstdcxx_printer.add_version('std::tr1::', 'shared_ptr', SharedPointerPrinter)
- libstdcxx_printer.add_version('std::tr1::', 'weak_ptr', SharedPointerPrinter)
+ libstdcxx_printer.add_version(
+ 'std::tr1::', 'shared_ptr', SharedPointerPrinter)
+ libstdcxx_printer.add_version(
+ 'std::tr1::', 'weak_ptr', SharedPointerPrinter)
libstdcxx_printer.add_version('std::tr1::', 'unordered_map',
Tr1UnorderedMapPrinter)
libstdcxx_printer.add_version('std::tr1::', 'unordered_set',
@@ -1753,6 +2876,28 @@ def build_libstdcxx_dictionary ():
libstdcxx_printer.add_version('std::tr1::', 'unordered_multiset',
Tr1UnorderedSetPrinter)
+ libstdcxx_printer.add_version('std::', 'initializer_list',
+ StdInitializerListPrinter)
+ libstdcxx_printer.add_version('std::', 'atomic', StdAtomicPrinter)
+ libstdcxx_printer.add_version(
+ 'std::', 'basic_stringbuf', StdStringBufPrinter)
+ libstdcxx_printer.add_version(
+ 'std::__cxx11::', 'basic_stringbuf', StdStringBufPrinter)
+ for sstream in ('istringstream', 'ostringstream', 'stringstream'):
+ libstdcxx_printer.add_version(
+ 'std::', 'basic_' + sstream, StdStringStreamPrinter)
+ libstdcxx_printer.add_version(
+ 'std::__cxx11::', 'basic_' + sstream, StdStringStreamPrinter)
+
+ libstdcxx_printer.add_version('std::chrono::', 'duration',
+ StdChronoDurationPrinter)
+ libstdcxx_printer.add_version('std::chrono::', 'time_point',
+ StdChronoTimePointPrinter)
+
+ # std::regex components
+ libstdcxx_printer.add_version('std::__detail::', '_State',
+ StdRegexStatePrinter)
+
# These are the C++11 printer registrations for -D_GLIBCXX_DEBUG cases.
# The tr1 namespace containers do not have any debug equivalents,
# so do not register printers for them.
@@ -1780,9 +2925,9 @@ def build_libstdcxx_dictionary ():
libstdcxx_printer.add_version('std::experimental::filesystem::v1::__cxx11::',
'path', StdExpPathPrinter)
libstdcxx_printer.add_version('std::filesystem::',
- 'path', StdExpPathPrinter)
+ 'path', StdPathPrinter)
libstdcxx_printer.add_version('std::filesystem::__cxx11::',
- 'path', StdExpPathPrinter)
+ 'path', StdPathPrinter)
# C++17 components
libstdcxx_printer.add_version('std::',
@@ -1796,6 +2941,33 @@ def build_libstdcxx_dictionary ():
libstdcxx_printer.add_version('std::',
'_Node_handle', StdNodeHandlePrinter)
+ # C++20 components
+ libstdcxx_printer.add_version(
+ 'std::', 'partial_ordering', StdCmpCatPrinter)
+ libstdcxx_printer.add_version('std::', 'weak_ordering', StdCmpCatPrinter)
+ libstdcxx_printer.add_version('std::', 'strong_ordering', StdCmpCatPrinter)
+ libstdcxx_printer.add_version('std::', 'span', StdSpanPrinter)
+ libstdcxx_printer.add_version('std::', 'basic_format_args',
+ StdFormatArgsPrinter)
+ for c in ['day', 'month', 'year', 'weekday', 'weekday_indexed', 'weekday_last',
+ 'month_day', 'month_day_last', 'month_weekday', 'month_weekday_last',
+ 'year_month', 'year_month_day', 'year_month_day_last',
+ 'year_month_weekday', 'year_month_weekday_last', 'hh_mm_ss']:
+ libstdcxx_printer.add_version('std::chrono::', c,
+ StdChronoCalendarPrinter)
+ libstdcxx_printer.add_version('std::chrono::', 'time_zone',
+ StdChronoTimeZonePrinter)
+ libstdcxx_printer.add_version('std::chrono::', 'time_zone_link',
+ StdChronoTimeZonePrinter)
+ libstdcxx_printer.add_version('std::chrono::', 'zoned_time',
+ StdChronoZonedTimePrinter)
+ libstdcxx_printer.add_version('std::chrono::', 'leap_second',
+ StdChronoLeapSecondPrinter)
+ libstdcxx_printer.add_version(
+ 'std::chrono::', 'tzdb', StdChronoTzdbPrinter)
+ # libstdcxx_printer.add_version('std::chrono::(anonymous namespace)', 'Rule',
+ # StdChronoTimeZoneRulePrinter)
+
# Extensions.
libstdcxx_printer.add_version('__gnu_cxx::', 'slist', StdSlistPrinter)
@@ -1816,6 +2988,12 @@ def build_libstdcxx_dictionary ():
StdDequeIteratorPrinter)
libstdcxx_printer.add_version('__gnu_cxx::', '__normal_iterator',
StdVectorIteratorPrinter)
+ libstdcxx_printer.add_container('std::', '_Bit_iterator',
+ StdBitIteratorPrinter)
+ libstdcxx_printer.add_container('std::', '_Bit_const_iterator',
+ StdBitIteratorPrinter)
+ libstdcxx_printer.add_container('std::', '_Bit_reference',
+ StdBitReferencePrinter)
libstdcxx_printer.add_version('__gnu_cxx::', '_Slist_iterator',
StdSlistIteratorPrinter)
libstdcxx_printer.add_container('std::', '_Fwd_list_iterator',
@@ -1828,4 +3006,5 @@ def build_libstdcxx_dictionary ():
libstdcxx_printer.add('__gnu_debug::_Safe_iterator',
StdDebugIteratorPrinter)
-build_libstdcxx_dictionary ()
+
+build_libstdcxx_dictionary()
diff --git a/libstdc++-v3/python/libstdcxx/v6/xmethods.py b/libstdc++-v3/python/libstdcxx/v6/xmethods.py
index 12fefdb041c..436c866e001 100644
--- a/libstdc++-v3/python/libstdcxx/v6/xmethods.py
+++ b/libstdc++-v3/python/libstdcxx/v6/xmethods.py
@@ -1,6 +1,6 @@
# Xmethods for libstdc++.
-# Copyright (C) 2014-2018 Free Software Foundation, Inc.
+# Copyright (C) 2014-2024 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
@@ -21,12 +21,27 @@ import re
matcher_name_prefix = 'libstdc++::'
+
def get_bool_type():
return gdb.lookup_type('bool')
def get_std_size_type():
return gdb.lookup_type('std::size_t')
+_versioned_namespace = '__8::'
+
+def is_specialization_of(x, template_name):
+ """
+ Test whether a type is a specialization of the named class template.
+ The type can be specified as a string or a gdb.Type object.
+ The template should be the name of a class template as a string,
+ without any 'std' qualification.
+ """
+ if isinstance(x, gdb.Type):
+ x = x.tag
+ template_name = '(%s)?%s' % (_versioned_namespace, template_name)
+ return re.match(r'^std::(__\d::)?%s<.*>$' % template_name, x) is not None
+
class LibStdCxxXMethod(gdb.xmethod.XMethod):
def __init__(self, name, worker_class):
gdb.xmethod.XMethod.__init__(self, name)
@@ -34,6 +49,7 @@ class LibStdCxxXMethod(gdb.xmethod.XMethod):
# Xmethods for std::array
+
class ArrayWorkerBase(gdb.xmethod.XMethodWorker):
def __init__(self, val_type, size):
self._val_type = val_type
@@ -43,6 +59,7 @@ class ArrayWorkerBase(gdb.xmethod.XMethodWorker):
nullptr = gdb.parse_and_eval('(void *) 0')
return nullptr.cast(self._val_type.pointer()).dereference()
+
class ArraySizeWorker(ArrayWorkerBase):
def __init__(self, val_type, size):
ArrayWorkerBase.__init__(self, val_type, size)
@@ -56,6 +73,7 @@ class ArraySizeWorker(ArrayWorkerBase):
def __call__(self, obj):
return self._size
+
class ArrayEmptyWorker(ArrayWorkerBase):
def __init__(self, val_type, size):
ArrayWorkerBase.__init__(self, val_type, size)
@@ -69,6 +87,7 @@ class ArrayEmptyWorker(ArrayWorkerBase):
def __call__(self, obj):
return (int(self._size) == 0)
+
class ArrayFrontWorker(ArrayWorkerBase):
def __init__(self, val_type, size):
ArrayWorkerBase.__init__(self, val_type, size)
@@ -85,6 +104,7 @@ class ArrayFrontWorker(ArrayWorkerBase):
else:
return self.null_value()
+
class ArrayBackWorker(ArrayWorkerBase):
def __init__(self, val_type, size):
ArrayWorkerBase.__init__(self, val_type, size)
@@ -101,6 +121,7 @@ class ArrayBackWorker(ArrayWorkerBase):
else:
return self.null_value()
+
class ArrayAtWorker(ArrayWorkerBase):
def __init__(self, val_type, size):
ArrayWorkerBase.__init__(self, val_type, size)
@@ -117,6 +138,7 @@ class ArrayAtWorker(ArrayWorkerBase):
((int(index), self._size)))
return obj['_M_elems'][index]
+
class ArraySubscriptWorker(ArrayWorkerBase):
def __init__(self, val_type, size):
ArrayWorkerBase.__init__(self, val_type, size)
@@ -133,6 +155,7 @@ class ArraySubscriptWorker(ArrayWorkerBase):
else:
return self.null_value()
+
class ArrayMethodsMatcher(gdb.xmethod.XMethodMatcher):
def __init__(self):
gdb.xmethod.XMethodMatcher.__init__(self,
@@ -148,7 +171,7 @@ class ArrayMethodsMatcher(gdb.xmethod.XMethodMatcher):
self.methods = [self._method_dict[m] for m in self._method_dict]
def match(self, class_type, method_name):
- if not re.match('^std::(__\d+::)?array<.*>$', class_type.tag):
+ if not is_specialization_of(class_type, 'array'):
return None
method = self._method_dict.get(method_name)
if method is None or not method.enabled:
@@ -160,24 +183,34 @@ class ArrayMethodsMatcher(gdb.xmethod.XMethodMatcher):
return None
return method.worker_class(value_type, size)
+
# Xmethods for std::deque
+
class DequeWorkerBase(gdb.xmethod.XMethodWorker):
def __init__(self, val_type):
self._val_type = val_type
self._bufsize = 512 // val_type.sizeof or 1
def size(self, obj):
- first_node = obj['_M_impl']['_M_start']['_M_node']
- last_node = obj['_M_impl']['_M_finish']['_M_node']
- cur = obj['_M_impl']['_M_finish']['_M_cur']
- first = obj['_M_impl']['_M_finish']['_M_first']
- return (last_node - first_node) * self._bufsize + (cur - first)
+ start = obj['_M_impl']['_M_start']
+ finish = obj['_M_impl']['_M_finish']
+ if start['_M_cur'] == finish['_M_cur']:
+ return 0
+ return (self._bufsize
+ * (finish['_M_node'] - start['_M_node'] - 1)
+ + (finish['_M_cur'] - finish['_M_first'])
+ + (start['_M_last'] - start['_M_cur']))
def index(self, obj, idx):
- first_node = obj['_M_impl']['_M_start']['_M_node']
- index_node = first_node + int(idx) // self._bufsize
- return index_node[0][idx % self._bufsize]
+ start = obj['_M_impl']['_M_start']
+ first_node_size = start['_M_last'] - start['_M_cur']
+ if idx < first_node_size:
+ return start['_M_cur'][idx]
+ idx = idx - first_node_size
+ index_node = start['_M_node'][1 + int(idx) // self._bufsize]
+ return index_node[idx % self._bufsize]
+
class DequeEmptyWorker(DequeWorkerBase):
def get_arg_types(self):
@@ -190,6 +223,7 @@ class DequeEmptyWorker(DequeWorkerBase):
return (obj['_M_impl']['_M_start']['_M_cur'] ==
obj['_M_impl']['_M_finish']['_M_cur'])
+
class DequeSizeWorker(DequeWorkerBase):
def get_arg_types(self):
return None
@@ -200,6 +234,7 @@ class DequeSizeWorker(DequeWorkerBase):
def __call__(self, obj):
return self.size(obj)
+
class DequeFrontWorker(DequeWorkerBase):
def get_arg_types(self):
return None
@@ -210,6 +245,7 @@ class DequeFrontWorker(DequeWorkerBase):
def __call__(self, obj):
return obj['_M_impl']['_M_start']['_M_cur'][0]
+
class DequeBackWorker(DequeWorkerBase):
def get_arg_types(self):
return None
@@ -219,12 +255,13 @@ class DequeBackWorker(DequeWorkerBase):
def __call__(self, obj):
if (obj['_M_impl']['_M_finish']['_M_cur'] ==
- obj['_M_impl']['_M_finish']['_M_first']):
+ obj['_M_impl']['_M_finish']['_M_first']):
prev_node = obj['_M_impl']['_M_finish']['_M_node'] - 1
return prev_node[0][self._bufsize - 1]
else:
return obj['_M_impl']['_M_finish']['_M_cur'][-1]
+
class DequeSubscriptWorker(DequeWorkerBase):
def get_arg_types(self):
return get_std_size_type()
@@ -235,6 +272,7 @@ class DequeSubscriptWorker(DequeWorkerBase):
def __call__(self, obj, subscript):
return self.index(obj, subscript)
+
class DequeAtWorker(DequeWorkerBase):
def get_arg_types(self):
return get_std_size_type()
@@ -248,7 +286,8 @@ class DequeAtWorker(DequeWorkerBase):
raise IndexError('Deque index "%d" should not be >= %d.' %
(int(index), deque_size))
else:
- return self.index(obj, index)
+ return self.index(obj, index)
+
class DequeMethodsMatcher(gdb.xmethod.XMethodMatcher):
def __init__(self):
@@ -265,7 +304,7 @@ class DequeMethodsMatcher(gdb.xmethod.XMethodMatcher):
self.methods = [self._method_dict[m] for m in self._method_dict]
def match(self, class_type, method_name):
- if not re.match('^std::(__\d+::)?deque<.*>$', class_type.tag):
+ if not is_specialization_of(class_type, 'deque'):
return None
method = self._method_dict.get(method_name)
if method is None or not method.enabled:
@@ -274,6 +313,7 @@ class DequeMethodsMatcher(gdb.xmethod.XMethodMatcher):
# Xmethods for std::forward_list
+
class ForwardListWorkerBase(gdb.xmethod.XMethodMatcher):
def __init__(self, val_type, node_type):
self._val_type = val_type
@@ -282,6 +322,7 @@ class ForwardListWorkerBase(gdb.xmethod.XMethodMatcher):
def get_arg_types(self):
return None
+
class ForwardListEmptyWorker(ForwardListWorkerBase):
def get_result_type(self, obj):
return get_bool_type()
@@ -289,6 +330,7 @@ class ForwardListEmptyWorker(ForwardListWorkerBase):
def __call__(self, obj):
return obj['_M_impl']['_M_head']['_M_next'] == 0
+
class ForwardListFrontWorker(ForwardListWorkerBase):
def get_result_type(self, obj):
return self._val_type
@@ -298,6 +340,7 @@ class ForwardListFrontWorker(ForwardListWorkerBase):
val_address = node['_M_storage']['_M_storage'].address
return val_address.cast(self._val_type.pointer()).dereference()
+
class ForwardListMethodsMatcher(gdb.xmethod.XMethodMatcher):
def __init__(self):
matcher_name = matcher_name_prefix + 'forward_list'
@@ -309,7 +352,7 @@ class ForwardListMethodsMatcher(gdb.xmethod.XMethodMatcher):
self.methods = [self._method_dict[m] for m in self._method_dict]
def match(self, class_type, method_name):
- if not re.match('^std::(__\d+::)?forward_list<.*>$', class_type.tag):
+ if not is_specialization_of(class_type, 'forward_list'):
return None
method = self._method_dict.get(method_name)
if method is None or not method.enabled:
@@ -320,6 +363,7 @@ class ForwardListMethodsMatcher(gdb.xmethod.XMethodMatcher):
# Xmethods for std::list
+
class ListWorkerBase(gdb.xmethod.XMethodWorker):
def __init__(self, val_type, node_type):
self._val_type = val_type
@@ -337,6 +381,7 @@ class ListWorkerBase(gdb.xmethod.XMethodWorker):
addr = node['_M_storage'].address
return addr.cast(self._val_type.pointer()).dereference()
+
class ListEmptyWorker(ListWorkerBase):
def get_result_type(self, obj):
return get_bool_type()
@@ -348,6 +393,7 @@ class ListEmptyWorker(ListWorkerBase):
else:
return False
+
class ListSizeWorker(ListWorkerBase):
def get_result_type(self, obj):
return get_std_size_type()
@@ -361,6 +407,7 @@ class ListSizeWorker(ListWorkerBase):
size += 1
return size
+
class ListFrontWorker(ListWorkerBase):
def get_result_type(self, obj):
return self._val_type
@@ -369,6 +416,7 @@ class ListFrontWorker(ListWorkerBase):
node = obj['_M_impl']['_M_node']['_M_next'].cast(self._node_type)
return self.get_value_from_node(node)
+
class ListBackWorker(ListWorkerBase):
def get_result_type(self, obj):
return self._val_type
@@ -377,6 +425,7 @@ class ListBackWorker(ListWorkerBase):
prev_node = obj['_M_impl']['_M_node']['_M_prev'].cast(self._node_type)
return self.get_value_from_node(prev_node)
+
class ListMethodsMatcher(gdb.xmethod.XMethodMatcher):
def __init__(self):
gdb.xmethod.XMethodMatcher.__init__(self,
@@ -390,7 +439,7 @@ class ListMethodsMatcher(gdb.xmethod.XMethodMatcher):
self.methods = [self._method_dict[m] for m in self._method_dict]
def match(self, class_type, method_name):
- if not re.match('^std::(__\d+::)?(__cxx11::)?list<.*>$', class_type.tag):
+ if not is_specialization_of(class_type, '(__cxx11::)?list'):
return None
method = self._method_dict.get(method_name)
if method is None or not method.enabled:
@@ -401,6 +450,7 @@ class ListMethodsMatcher(gdb.xmethod.XMethodMatcher):
# Xmethods for std::vector
+
class VectorWorkerBase(gdb.xmethod.XMethodWorker):
def __init__(self, val_type):
self._val_type = val_type
@@ -425,6 +475,7 @@ class VectorWorkerBase(gdb.xmethod.XMethodWorker):
else:
return obj['_M_impl']['_M_start'][index]
+
class VectorEmptyWorker(VectorWorkerBase):
def get_arg_types(self):
return None
@@ -435,6 +486,7 @@ class VectorEmptyWorker(VectorWorkerBase):
def __call__(self, obj):
return int(self.size(obj)) == 0
+
class VectorSizeWorker(VectorWorkerBase):
def get_arg_types(self):
return None
@@ -445,6 +497,7 @@ class VectorSizeWorker(VectorWorkerBase):
def __call__(self, obj):
return self.size(obj)
+
class VectorFrontWorker(VectorWorkerBase):
def get_arg_types(self):
return None
@@ -455,6 +508,7 @@ class VectorFrontWorker(VectorWorkerBase):
def __call__(self, obj):
return self.get(obj, 0)
+
class VectorBackWorker(VectorWorkerBase):
def get_arg_types(self):
return None
@@ -465,6 +519,7 @@ class VectorBackWorker(VectorWorkerBase):
def __call__(self, obj):
return self.get(obj, int(self.size(obj)) - 1)
+
class VectorAtWorker(VectorWorkerBase):
def get_arg_types(self):
return get_std_size_type()
@@ -479,6 +534,7 @@ class VectorAtWorker(VectorWorkerBase):
((int(index), size)))
return self.get(obj, int(index))
+
class VectorSubscriptWorker(VectorWorkerBase):
def get_arg_types(self):
return get_std_size_type()
@@ -489,6 +545,7 @@ class VectorSubscriptWorker(VectorWorkerBase):
def __call__(self, obj, subscript):
return self.get(obj, int(subscript))
+
class VectorMethodsMatcher(gdb.xmethod.XMethodMatcher):
def __init__(self):
gdb.xmethod.XMethodMatcher.__init__(self,
@@ -505,7 +562,7 @@ class VectorMethodsMatcher(gdb.xmethod.XMethodMatcher):
self.methods = [self._method_dict[m] for m in self._method_dict]
def match(self, class_type, method_name):
- if not re.match('^std::(__\d+::)?vector<.*>$', class_type.tag):
+ if not is_specialization_of(class_type, 'vector'):
return None
method = self._method_dict.get(method_name)
if method is None or not method.enabled:
@@ -514,6 +571,7 @@ class VectorMethodsMatcher(gdb.xmethod.XMethodMatcher):
# Xmethods for associative containers
+
class AssociativeContainerWorkerBase(gdb.xmethod.XMethodWorker):
def __init__(self, unordered):
self._unordered = unordered
@@ -527,6 +585,7 @@ class AssociativeContainerWorkerBase(gdb.xmethod.XMethodWorker):
def get_arg_types(self):
return None
+
class AssociativeContainerEmptyWorker(AssociativeContainerWorkerBase):
def get_result_type(self, obj):
return get_bool_type()
@@ -534,6 +593,7 @@ class AssociativeContainerEmptyWorker(AssociativeContainerWorkerBase):
def __call__(self, obj):
return int(self.node_count(obj)) == 0
+
class AssociativeContainerSizeWorker(AssociativeContainerWorkerBase):
def get_result_type(self, obj):
return get_std_size_type()
@@ -541,6 +601,7 @@ class AssociativeContainerSizeWorker(AssociativeContainerWorkerBase):
def __call__(self, obj):
return self.node_count(obj)
+
class AssociativeContainerMethodsMatcher(gdb.xmethod.XMethodMatcher):
def __init__(self, name):
gdb.xmethod.XMethodMatcher.__init__(self,
@@ -554,7 +615,7 @@ class AssociativeContainerMethodsMatcher(gdb.xmethod.XMethodMatcher):
self.methods = [self._method_dict[m] for m in self._method_dict]
def match(self, class_type, method_name):
- if not re.match('^std::(__\d+::)?%s<.*>$' % self._name, class_type.tag):
+ if not is_specialization_of(class_type, self._name):
return None
method = self._method_dict.get(method_name)
if method is None or not method.enabled:
@@ -564,8 +625,11 @@ class AssociativeContainerMethodsMatcher(gdb.xmethod.XMethodMatcher):
# Xmethods for std::unique_ptr
+
class UniquePtrGetWorker(gdb.xmethod.XMethodWorker):
- "Implements std::unique_ptr<T>::get() and std::unique_ptr<T>::operator->()"
+ """
+ Implement std::unique_ptr<T>::get() and std::unique_ptr<T>::operator->().
+ """
def __init__(self, elem_type):
self._is_array = elem_type.code == gdb.TYPE_CODE_ARRAY
@@ -581,19 +645,31 @@ class UniquePtrGetWorker(gdb.xmethod.XMethodWorker):
return self._elem_type.pointer()
def _supports(self, method_name):
- "operator-> is not supported for unique_ptr<T[]>"
+ # operator-> is not supported for unique_ptr<T[]>
return method_name == 'get' or not self._is_array
def __call__(self, obj):
impl_type = obj.dereference().type.fields()[0].type.tag
- if re.match('^std::(__\d+::)?__uniq_ptr_impl<.*>$', impl_type): # New implementation
- return obj['_M_t']['_M_t']['_M_head_impl']
- elif re.match('^std::(__\d+::)?tuple<.*>$', impl_type):
- return obj['_M_t']['_M_head_impl']
- return None
+ # Check for new implementations first:
+ if is_specialization_of(impl_type, '__uniq_ptr_(data|impl)'):
+ tuple_member = obj['_M_t']['_M_t']
+ elif is_specialization_of(impl_type, 'tuple'):
+ tuple_member = obj['_M_t']
+ else:
+ return None
+ tuple_impl_type = tuple_member.type.fields()[0].type # _Tuple_impl
+ tuple_head_type = tuple_impl_type.fields()[1].type # _Head_base
+ head_field = tuple_head_type.fields()[0]
+ if head_field.name == '_M_head_impl':
+ return tuple_member.cast(tuple_head_type)['_M_head_impl']
+ elif head_field.is_base_class:
+ return tuple_member.cast(head_field.type)
+ else:
+ return None
+
class UniquePtrDerefWorker(UniquePtrGetWorker):
- "Implements std::unique_ptr<T>::operator*()"
+ """Implement std::unique_ptr<T>::operator*()."""
def __init__(self, elem_type):
UniquePtrGetWorker.__init__(self, elem_type)
@@ -602,14 +678,15 @@ class UniquePtrDerefWorker(UniquePtrGetWorker):
return self._elem_type
def _supports(self, method_name):
- "operator* is not supported for unique_ptr<T[]>"
+ # operator* is not supported for unique_ptr<T[]>
return not self._is_array
def __call__(self, obj):
return UniquePtrGetWorker.__call__(self, obj).dereference()
+
class UniquePtrSubscriptWorker(UniquePtrGetWorker):
- "Implements std::unique_ptr<T>::operator[](size_t)"
+ """Implement std::unique_ptr<T>::operator[](size_t)."""
def __init__(self, elem_type):
UniquePtrGetWorker.__init__(self, elem_type)
@@ -621,12 +698,13 @@ class UniquePtrSubscriptWorker(UniquePtrGetWorker):
return self._elem_type
def _supports(self, method_name):
- "operator[] is only supported for unique_ptr<T[]>"
+ # operator[] is only supported for unique_ptr<T[]>
return self._is_array
def __call__(self, obj, index):
return UniquePtrGetWorker.__call__(self, obj)[index]
+
class UniquePtrMethodsMatcher(gdb.xmethod.XMethodMatcher):
def __init__(self):
gdb.xmethod.XMethodMatcher.__init__(self,
@@ -640,7 +718,7 @@ class UniquePtrMethodsMatcher(gdb.xmethod.XMethodMatcher):
self.methods = [self._method_dict[m] for m in self._method_dict]
def match(self, class_type, method_name):
- if not re.match('^std::(__\d+::)?unique_ptr<.*>$', class_type.tag):
+ if not is_specialization_of(class_type, 'unique_ptr'):
return None
method = self._method_dict.get(method_name)
if method is None or not method.enabled:
@@ -652,8 +730,11 @@ class UniquePtrMethodsMatcher(gdb.xmethod.XMethodMatcher):
# Xmethods for std::shared_ptr
+
class SharedPtrGetWorker(gdb.xmethod.XMethodWorker):
- "Implements std::shared_ptr<T>::get() and std::shared_ptr<T>::operator->()"
+ """
+ Implements std::shared_ptr<T>::get() and std::shared_ptr<T>::operator->().
+ """
def __init__(self, elem_type):
self._is_array = elem_type.code == gdb.TYPE_CODE_ARRAY
@@ -669,14 +750,15 @@ class SharedPtrGetWorker(gdb.xmethod.XMethodWorker):
return self._elem_type.pointer()
def _supports(self, method_name):
- "operator-> is not supported for shared_ptr<T[]>"
+ # operator-> is not supported for shared_ptr<T[]>
return method_name == 'get' or not self._is_array
def __call__(self, obj):
return obj['_M_ptr']
+
class SharedPtrDerefWorker(SharedPtrGetWorker):
- "Implements std::shared_ptr<T>::operator*()"
+ """Implement std::shared_ptr<T>::operator*()."""
def __init__(self, elem_type):
SharedPtrGetWorker.__init__(self, elem_type)
@@ -685,14 +767,15 @@ class SharedPtrDerefWorker(SharedPtrGetWorker):
return self._elem_type
def _supports(self, method_name):
- "operator* is not supported for shared_ptr<T[]>"
+ # operator* is not supported for shared_ptr<T[]>
return not self._is_array
def __call__(self, obj):
return SharedPtrGetWorker.__call__(self, obj).dereference()
+
class SharedPtrSubscriptWorker(SharedPtrGetWorker):
- "Implements std::shared_ptr<T>::operator[](size_t)"
+ """Implement std::shared_ptr<T>::operator[](size_t)."""
def __init__(self, elem_type):
SharedPtrGetWorker.__init__(self, elem_type)
@@ -704,22 +787,23 @@ class SharedPtrSubscriptWorker(SharedPtrGetWorker):
return self._elem_type
def _supports(self, method_name):
- "operator[] is only supported for shared_ptr<T[]>"
+ # operator[] is only supported for shared_ptr<T[]>
return self._is_array
def __call__(self, obj, index):
# Check bounds if _elem_type is an array of known bound
- m = re.match('.*\[(\d+)]$', str(self._elem_type))
+ m = re.match(r'.*\[(\d+)]$', str(self._elem_type))
if m and index >= int(m.group(1)):
raise IndexError('shared_ptr<%s> index "%d" should not be >= %d.' %
(self._elem_type, int(index), int(m.group(1))))
return SharedPtrGetWorker.__call__(self, obj)[index]
+
class SharedPtrUseCountWorker(gdb.xmethod.XMethodWorker):
- "Implements std::shared_ptr<T>::use_count()"
+ """Implement std::shared_ptr<T>::use_count()."""
def __init__(self, elem_type):
- SharedPtrUseCountWorker.__init__(self, elem_type)
+ pass
def get_arg_types(self):
return None
@@ -727,12 +811,16 @@ class SharedPtrUseCountWorker(gdb.xmethod.XMethodWorker):
def get_result_type(self, obj):
return gdb.lookup_type('long')
+ def _supports(self, method_name):
+ return True
+
def __call__(self, obj):
refcounts = obj['_M_refcount']['_M_pi']
return refcounts['_M_use_count'] if refcounts else 0
+
class SharedPtrUniqueWorker(SharedPtrUseCountWorker):
- "Implements std::shared_ptr<T>::unique()"
+ """Implement std::shared_ptr<T>::unique()."""
def __init__(self, elem_type):
SharedPtrUseCountWorker.__init__(self, elem_type)
@@ -743,6 +831,7 @@ class SharedPtrUniqueWorker(SharedPtrUseCountWorker):
def __call__(self, obj):
return SharedPtrUseCountWorker.__call__(self, obj) == 1
+
class SharedPtrMethodsMatcher(gdb.xmethod.XMethodMatcher):
def __init__(self):
gdb.xmethod.XMethodMatcher.__init__(self,
@@ -758,7 +847,7 @@ class SharedPtrMethodsMatcher(gdb.xmethod.XMethodMatcher):
self.methods = [self._method_dict[m] for m in self._method_dict]
def match(self, class_type, method_name):
- if not re.match('^std::(__\d+::)?shared_ptr<.*>$', class_type.tag):
+ if not is_specialization_of(class_type, 'shared_ptr'):
return None
method = self._method_dict.get(method_name)
if method is None or not method.enabled:
@@ -768,6 +857,7 @@ class SharedPtrMethodsMatcher(gdb.xmethod.XMethodMatcher):
return worker
return None
+
def register_libstdcxx_xmethods(locus):
gdb.xmethod.register_xmethod_matcher(locus, ArrayMethodsMatcher())
gdb.xmethod.register_xmethod_matcher(locus, ForwardListMethodsMatcher())
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