58 lines
1.7 KiB
C++
58 lines
1.7 KiB
C++
// OpenSTA, Static Timing Analyzer
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// Copyright (c) 2025, Parallax Software, Inc.
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <https://www.gnu.org/licenses/>.
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//
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// The origin of this software must not be misrepresented; you must not
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// claim that you wrote the original software.
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//
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// Altered source versions must be plainly marked as such, and must not be
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// misrepresented as being the original software.
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//
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// This notice may not be removed or altered from any source distribution.
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#pragma once
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#include "NetworkClass.hh"
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#include "GraphClass.hh"
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namespace sta {
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// Abstract base class for visiting a vertex.
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class VertexVisitor
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{
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public:
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VertexVisitor() {}
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virtual ~VertexVisitor() {}
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virtual VertexVisitor *copy() const = 0;
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virtual void visit(Vertex *vertex) = 0;
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void operator()(Vertex *vertex) { visit(vertex); }
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virtual void levelFinished() {}
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};
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// Collect visited pins into a PinSet.
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class VertexPinCollector : public VertexVisitor
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{
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public:
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VertexPinCollector(PinSet &pins);
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const PinSet &pins() const { return pins_; }
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void visit(Vertex *vertex);
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virtual VertexVisitor *copy() const;
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protected:
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PinSet &pins_;
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};
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} // namespace
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