223 lines
6.8 KiB
C++
223 lines
6.8 KiB
C++
// OpenSTA, Static Timing Analyzer
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// Copyright (c) 2020, 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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#pragma once
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#include <array>
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#include <vector>
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#include "DisallowCopyAssign.hh"
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#include "Iterator.hh"
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#include "Map.hh"
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#include "StringUtil.hh"
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namespace sta {
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class Transition;
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class RiseFall;
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class RiseFallBoth;
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typedef Map<const char*, Transition*, CharPtrLess> TransitionMap;
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// Rise/fall transition.
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class RiseFall
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{
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public:
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// Singleton accessors.
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static RiseFall *rise() { return &rise_; }
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static RiseFall *fall() { return &fall_; }
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static int riseIndex() { return rise_.sdf_triple_index_; }
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static int fallIndex() { return fall_.sdf_triple_index_; }
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const char *asString() const { return short_name_; }
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const char *name() const { return name_; }
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const char *shortName() const { return short_name_; }
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void setShortName(const char *short_name);
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int index() const { return sdf_triple_index_; }
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RiseFallBoth *asRiseFallBoth();
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const RiseFallBoth *asRiseFallBoth() const;
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Transition *asTransition() const;
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// Find transition corresponding to tr_str.
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static RiseFall *find(const char *tr_str);
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// Find transition from index.
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static RiseFall *find(int index);
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RiseFall *opposite() const;
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// for range support.
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// for (auto tr : RiseFall::range()) {}
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static const std::array<RiseFall*, 2> &range() { return range_; }
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// for (auto tr_index : RiseFall::rangeIndex()) {}
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static const std::array<int, 2> &rangeIndex() { return range_index_; }
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static const int index_count = 2;
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static const int index_max = (index_count - 1);
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static const int index_bit_count = 1;
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protected:
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RiseFall(const char *name,
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const char *short_name,
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int sdf_triple_index);
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~RiseFall();
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const char *name_;
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const char *short_name_;
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const int sdf_triple_index_;
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static RiseFall rise_;
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static RiseFall fall_;
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static const std::array<RiseFall*, 2> range_;
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static const std::array<int, 2> range_index_;
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private:
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DISALLOW_COPY_AND_ASSIGN(RiseFall);
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};
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// Rise/fall/risefall transition.
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class RiseFallBoth
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{
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public:
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// Singleton accessors.
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static RiseFallBoth *rise() { return &rise_; }
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static RiseFallBoth *fall() { return &fall_; }
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static RiseFallBoth *riseFall() { return &rise_fall_; }
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const char *asString() const { return short_name_; }
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const char *name() const { return name_; }
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const char *shortName() const { return short_name_; }
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void setShortName(const char *short_name);
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int index() const { return sdf_triple_index_; }
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bool matches(const RiseFall *rf) const;
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bool matches(const Transition *tr) const;
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RiseFall *asRiseFall() const { return as_rise_fall_; }
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// Find transition corresponding to string.
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static RiseFallBoth *find(const char *tr_str);
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// for (auto tr : min_max->range()) {}
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const std::vector<RiseFall*> &range() const { return range_; }
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// for (auto tr_index : min_max->rangeIndex()) {}
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const std::vector<int> &rangeIndex() const { return range_index_; }
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static const int index_count = 3;
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static const int index_max = (index_count - 1);
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static const int index_bit_count = 2;
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protected:
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RiseFallBoth(const char *name,
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const char *short_name,
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int sdf_triple_index,
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RiseFall *as_rise_fall,
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std::vector<RiseFall*> range,
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std::vector<int> range_index);
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~RiseFallBoth();
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const char *name_;
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const char *short_name_;
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const int sdf_triple_index_;
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RiseFall *as_rise_fall_;
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const std::vector<RiseFall*> range_;
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const std::vector<int> range_index_;
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static RiseFallBoth rise_;
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static RiseFallBoth fall_;
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static RiseFallBoth rise_fall_;
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private:
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DISALLOW_COPY_AND_ASSIGN(RiseFallBoth);
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};
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// General SDF transition.
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class Transition
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{
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public:
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// Singleton accessors.
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static Transition *rise() { return &rise_; }
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static Transition *fall() { return &fall_; }
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static Transition *tr0Z() { return &tr_0Z_; }
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static Transition *trZ1() { return &tr_Z1_; }
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static Transition *tr1Z() { return &tr_1Z_; }
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static Transition *trZ0() { return &tr_Z0_; }
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static Transition *tr0X() { return &tr_0X_; }
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static Transition *trX1() { return &tr_X1_; }
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static Transition *tr1X() { return &tr_1X_; }
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static Transition *trX0() { return &tr_X0_; }
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static Transition *trXZ() { return &tr_XZ_; }
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static Transition *trZX() { return &tr_ZX_; }
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void setName(const char *name);
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// Matches rise and fall.
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static Transition *riseFall() { return &rise_fall_; }
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const char *asString() const { return name_; }
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// As initial/final value pair.
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const char *asInitFinalString() const { return init_final_; }
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int sdfTripleIndex() const { return sdf_triple_index_; }
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int index() const { return sdf_triple_index_; }
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RiseFall *asRiseFall() const { return as_rise_fall_; }
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const RiseFallBoth *asRiseFallBoth() const;
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bool matches(const Transition *tr) const;
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// Find transition corresponding to string.
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static Transition *find(const char *tr_str);
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static int maxIndex() { return max_index_; }
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private:
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Transition(const char *name,
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const char *init_final,
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RiseFall *as_rise_fall,
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int sdf_triple_index);
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~Transition();
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const char *name_;
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const char *init_final_;
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RiseFall *as_rise_fall_;
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const int sdf_triple_index_;
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static Transition rise_;
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static Transition fall_;
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static Transition tr_0Z_;
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static Transition tr_Z1_;
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static Transition tr_1Z_;
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static Transition tr_Z0_;
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static Transition tr_0X_;
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static Transition tr_X1_;
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static Transition tr_1X_;
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static Transition tr_X0_;
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static Transition tr_XZ_;
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static Transition tr_ZX_;
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static Transition rise_fall_;
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static const int index_count = 13;
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static const int index_max = (index_count - 1);
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static const int index_bit_count = 4;
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static TransitionMap transition_map_;
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static int max_index_;
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private:
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DISALLOW_COPY_AND_ASSIGN(Transition);
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};
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// Obsolete. Use range iteration instead.
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// for (RiseFall *rf : RiseFall::range()) {}
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class RiseFallIterator : public Iterator<RiseFall*>
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{
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public:
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RiseFallIterator() : index_(0), index_max_(RiseFall::index_max) {}
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explicit RiseFallIterator(const RiseFallBoth *rf);
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void init();
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virtual bool hasNext();
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virtual RiseFall *next();
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private:
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DISALLOW_COPY_AND_ASSIGN(RiseFallIterator);
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int index_;
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int index_max_;
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};
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} // namespace
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