mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
65 lines
1.8 KiB
C++
65 lines
1.8 KiB
C++
/*
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This file is part of solidity.
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solidity 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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solidity 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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You should have received a copy of the GNU General Public License
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along with solidity. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* Contains an abstract base class representing a fitness metric and its concrete implementations.
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*/
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#pragma once
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#include <tools/yulPhaser/Chromosome.h>
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#include <tools/yulPhaser/Program.h>
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#include <cstddef>
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namespace solidity::phaser
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{
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/**
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* Abstract base class for fitness metrics.
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*
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* The main feature is the @a evaluate() method that can tell how good a given chromosome is.
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* The lower the value, the better the fitness is. The result should be deterministic and depend
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* only on the chromosome and metric's state (which is constant).
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*/
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class FitnessMetric
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{
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public:
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FitnessMetric() = default;
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FitnessMetric(FitnessMetric const&) = delete;
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FitnessMetric& operator=(FitnessMetric const&) = delete;
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virtual ~FitnessMetric() = default;
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virtual size_t evaluate(Chromosome const& _chromosome) const = 0;
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};
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/**
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* Fitness metric based on the size of a specific program after applying the optimisations from the
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* chromosome to it.
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*/
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class ProgramSize: public FitnessMetric
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{
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public:
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ProgramSize(Program _program): m_program(std::move(_program)) {}
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size_t evaluate(Chromosome const& _chromosome) const override;
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private:
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Program m_program;
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};
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}
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