OpenSTA/graph/GraphCmp.cc

// OpenSTA, Static Timing Analyzer
// Copyright (c) 2026, Parallax Software, 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, 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 <https://www.gnu.org/licenses/>.
// 
// The origin of this software must not be misrepresented; you must not
// claim that you wrote the original software.
// 
// Altered source versions must be plainly marked as such, and must not be
// misrepresented as being the original software.
// 
// This notice may not be removed or altered from any source distribution.

#include "GraphCmp.hh"

#include "ContainerHelpers.hh"
#include "Graph.hh"
#include "Network.hh"
#include "NetworkCmp.hh"
#include "StringUtil.hh"

namespace sta {

VertexNameLess::VertexNameLess(Network *network) :
  network_(network)
{
}

bool
VertexNameLess::operator()(const Vertex *vertex1,
                           const Vertex *vertex2)
{
  return network_->pathNameLess(vertex1->pin(), vertex2->pin());
}

////////////////////////////////////////////////////////////////

EdgeLess::EdgeLess(const Network *network,
                   Graph *&graph) :
  pin_less_(network),
  graph_(graph)
{
}

bool
EdgeLess::operator()(const Edge *edge1,
                     const Edge *edge2) const
{
  const Pin *from1 = edge1->from(graph_)->pin();
  const Pin *from2 = edge2->from(graph_)->pin();
  const Pin *to1 = edge1->to(graph_)->pin();
  const Pin *to2 = edge2->to(graph_)->pin();
  return pin_less_(from1, from2)
    || (from1 == from2
        && pin_less_(to1, to2));
}

void
sortEdges(EdgeSeq *edges,
          Network *network,
          Graph *graph)
{
  sort(edges, EdgeLess(network, graph));
}

} // namespace sta