Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 129 insertions, 0 deletions

diff --git a/solenv/gdb/boost/lib/unordered.py b/solenv/gdb/boost/lib/unordered.py
new file mode 100644
index 000000000..ee58d0481
--- /dev/null
+++ b/solenv/gdb/boost/lib/unordered.py
@@ -0,0 +1,129 @@
+# -*- tab-width: 4; indent-tabs-mode: nil; py-indent-offset: 4 -*-
+# Helper classes for working with Boost.Unordered.
+#
+# Copyright (C) 2012 Red Hat, Inc., David Tardon <dtardon@redhat.com>
+#
+# This file is part of boost-gdb-printers.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+import gdb
+import six
+
+class Unordered(object):
+    '''Common representation of Boost.Unordered types'''
+
+    def __init__(self, value, extractor):
+        self.value = value
+        self.extractor = extractor
+        self.node_type = self._node_type()
+
+    def __len__(self):
+        table = self.value['table_']
+        if table['buckets_']:
+            return int(table['size_'])
+        else:
+            return 0
+
+    def __iter__(self):
+        table = self.value['table_']
+        buckets = table['buckets_']
+        if buckets:
+            first = table['cached_begin_bucket_']
+            last = buckets + table['bucket_count_']
+        else:
+            first = last = None
+        return self._iterator(first, last, self.node_type, self.extractor)
+
+    def empty(self):
+        return not self.value['table_']['buckets_']
+
+    def _node_type(self):
+        hash_table = self.value['table_'].type.fields()[0]
+        assert hash_table.is_base_class
+        hash_buckets = hash_table.type.fields()[0]
+        assert hash_buckets.is_base_class
+        node_type = gdb.lookup_type("%s::node" % hash_buckets.type)
+        assert node_type != None
+        return node_type
+
+    class _iterator(six.Iterator):
+        '''Iterator for Boost.Unordered types'''
+
+        def __init__(self, first_bucket, last_bucket, node_type, extractor):
+            self.bucket = first_bucket
+            self.last_bucket = last_bucket
+            self.node = self.bucket
+            self.node_type = node_type
+            self.value_type = self._value_type()
+            self.extractor = extractor
+
+        def __iter__(self):
+            return self
+
+        def __next__(self):
+            if self.node:
+                self.node = self.node.dereference()['next_']
+
+            # we finished the current bucket: go on to the next non-empty one
+            if not self.node:
+                while not self.node and self.bucket != self.last_bucket:
+                    self.bucket += 1
+                    self.node = self.bucket.dereference()['next_']
+
+            # sorry, no node available
+            if not self.node or self.node == self.bucket:
+                raise StopIteration()
+
+            mapped = self._value()
+            return (self.extractor.key(mapped), self.extractor.value(mapped))
+
+        def _value(self):
+            assert self.node != self.bucket # bucket node has no value
+            assert self.node != None
+            node = self.node.dereference().cast(self.node_type)
+            return node['data_'].cast(self.value_type)
+
+        def _value_type(self):
+            value_base = self.node_type.fields()[1]
+            assert value_base.is_base_class
+            return value_base.type.template_argument(0)
+
+class Map(Unordered):
+
+    def __init__(self, value):
+        super(Map, self).__init__(value, self._extractor())
+
+    class _extractor(object):
+
+        def key(self, node):
+            return node['first']
+
+        def value(self, node):
+            return node['second']
+
+class Set(Unordered):
+
+    def __init__(self, value):
+        super(Set, self).__init__(value, self._extractor())
+
+    class _extractor(object):
+
+        def key(self, node):
+            return None
+
+        def value(self, node):
+            return node
+
+# vim:set filetype=python shiftwidth=4 softtabstop=4 expandtab: