83 lines
2.8 KiB
C++
83 lines
2.8 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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namespace sta {
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class PortDirection
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{
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public:
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static void init();
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static void destroy();
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// Singleton accessors.
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static PortDirection *input() { return input_; }
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static PortDirection *output() { return output_; }
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static PortDirection *tristate() { return tristate_; }
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static PortDirection *bidirect() { return bidirect_; }
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static PortDirection *internal() { return internal_; }
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static PortDirection *ground() { return ground_; }
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static PortDirection *power() { return power_; }
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static PortDirection *unknown() { return unknown_; }
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static PortDirection *find(const char *dir_name);
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const char *name() const { return name_; }
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int index() const { return index_; }
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bool isInput() const { return this == input_; }
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// Input or bidirect.
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bool isAnyInput() const;
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bool isOutput() const { return this == output_; }
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// Output, tristate or bidirect.
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bool isAnyOutput() const;
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bool isTristate() const { return this == tristate_; }
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bool isBidirect() const { return this == bidirect_; }
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// Bidirect or tristate.
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bool isAnyTristate() const;
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bool isGround() const { return this == ground_; }
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bool isPower() const { return this == power_; }
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// Ground or power.
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bool isPowerGround() const;
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bool isInternal() const { return this == internal_; }
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bool isUnknown() const { return this == unknown_; }
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private:
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PortDirection(const char *name,
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int index);
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const char *name_;
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int index_;
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static PortDirection *input_;
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static PortDirection *output_;
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static PortDirection *tristate_;
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static PortDirection *bidirect_;
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static PortDirection *internal_;
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static PortDirection *ground_;
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static PortDirection *power_;
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static PortDirection *unknown_;
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};
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} // namespace
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