the begginning

versioning/BRM/rgnode.cpp

@@ -0,0 +1,97 @@
+/* Copyright (C) 2014 InfiniDB, 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 the Free Software Foundation; version 2 of
+   the License.
+
+   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, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+   MA 02110-1301, USA. */
+
+/*****************************************************************************
+ * $Id: rgnode.cpp 1823 2013-01-21 14:13:09Z rdempsey $
+ *
+ ****************************************************************************/
+
+#define RGNODE_DLLEXPORT
+#include "rgnode.h"
+#undef RGNODE_DLLEXPORT
+
+using namespace std;
+
+namespace BRM {
+
+RGNode::RGNode() : _color(0)
+{
+}
+
+RGNode::RGNode(const RGNode &n) : out(n.out), in(n.in), _color(n._color)
+{
+}
+
+RGNode::~RGNode()
+{
+	set<RGNode *>::iterator it;
+
+	for (it = in.begin(); it != in.end(); ) {
+		(*it)->out.erase(this);
+		in.erase(it++);
+	}
+	
+	for (it = out.begin(); it != out.end(); ) {
+		(*it)->in.erase(this);
+		out.erase(it++);
+	}
+
+}
+
+RGNode & RGNode::operator=(const RGNode &n)
+{
+	_color = n._color;
+	in = n.in;
+	out = n.out;
+	return *this;
+}
+
+uint64_t RGNode::color() const
+{
+	return _color;
+}
+
+void RGNode::color(uint64_t c)
+{
+	_color = c;
+}
+
+void RGNode::addOutEdge(RGNode *n) 
+{
+	out.insert(n);
+	n->in.insert(this);
+}
+
+void RGNode::addInEdge(RGNode *n)
+{
+	in.insert(n);
+	n->out.insert(this);
+}
+
+void RGNode::removeOutEdge(RGNode *n) 
+{
+	out.erase(n);
+	n->in.erase(this);
+}
+
+void RGNode::removeInEdge(RGNode *n)
+{
+	in.erase(n);
+	n->out.erase(this);
+}
+
+}    // namespace