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https://github.com/ethereum/solidity
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[yul-phaser] Chromosome: Make it possible to use genes that do not correspond to existing optimiser steps
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@ -120,6 +120,15 @@ BOOST_AUTO_TEST_CASE(constructor_should_allow_duplicate_steps)
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BOOST_TEST(Chromosome("ttfuf").genes() == "ttfuf");
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}
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BOOST_AUTO_TEST_CASE(constructor_should_allow_genes_that_do_not_correspond_to_any_step)
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{
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assert(OptimiserSuite::stepAbbreviationToNameMap().count('.') == 0);
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assert(OptimiserSuite::stepAbbreviationToNameMap().count('b') == 0);
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BOOST_TEST(Chromosome(".").genes() == ".");
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BOOST_TEST(Chromosome("a..abatbb").genes() == "a..abatbb");
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}
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BOOST_AUTO_TEST_CASE(output_operator_should_create_concise_and_unambiguous_string_representation)
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{
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vector<string> allSteps;
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@ -67,6 +67,11 @@ string const& Chromosome::randomOptimisationStep()
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return stepNames[SimulationRNG::uniformInt(0, stepNames.size() - 1)];
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}
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char Chromosome::randomGene()
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{
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return OptimiserSuite::stepNameToAbbreviationMap().at(randomOptimisationStep());
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}
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string Chromosome::stepsToGenes(vector<string> const& _optimisationSteps)
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{
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string genes;
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@ -44,6 +44,8 @@ public:
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explicit Chromosome(std::vector<std::string> _optimisationSteps):
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m_genes(stepsToGenes(_optimisationSteps)) {}
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explicit Chromosome(std::string _genes):
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// NOTE: We don't validate the genes - they're only checked at the point of conversion to
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// actual optimisation steps names. This is very convenient in mutation tests.
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m_genes(std::move(_genes)) {}
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static Chromosome makeRandom(size_t _length);
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@ -58,6 +60,7 @@ public:
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bool operator!=(Chromosome const& _other) const { return !(*this == _other); }
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static std::string const& randomOptimisationStep();
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static char randomGene();
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static std::string stepsToGenes(std::vector<std::string> const& _optimisationSteps);
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static std::vector<std::string> genesToSteps(std::string const& _genes);
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@ -36,15 +36,15 @@ function<Mutation> phaser::geneRandomisation(double _chance)
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{
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return [=](Chromosome const& _chromosome)
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{
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vector<string> optimisationSteps;
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for (auto const& step: _chromosome.optimisationSteps())
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optimisationSteps.push_back(
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string genes;
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for (char gene: _chromosome.genes())
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genes.push_back(
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SimulationRNG::bernoulliTrial(_chance) ?
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Chromosome::randomOptimisationStep() :
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step
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Chromosome::randomGene() :
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gene
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);
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return Chromosome(move(optimisationSteps));
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return Chromosome(move(genes));
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};
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}
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@ -52,12 +52,12 @@ function<Mutation> phaser::geneDeletion(double _chance)
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{
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return [=](Chromosome const& _chromosome)
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{
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vector<string> optimisationSteps;
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for (auto const& step: _chromosome.optimisationSteps())
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string genes;
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for (char gene: _chromosome.genes())
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if (!SimulationRNG::bernoulliTrial(_chance))
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optimisationSteps.push_back(step);
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genes.push_back(gene);
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return Chromosome(move(optimisationSteps));
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return Chromosome(move(genes));
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};
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}
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@ -65,19 +65,19 @@ function<Mutation> phaser::geneAddition(double _chance)
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{
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return [=](Chromosome const& _chromosome)
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{
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vector<string> optimisationSteps;
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string genes;
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if (SimulationRNG::bernoulliTrial(_chance))
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optimisationSteps.push_back(Chromosome::randomOptimisationStep());
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genes.push_back(Chromosome::randomGene());
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for (auto const& step: _chromosome.optimisationSteps())
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for (char gene: _chromosome.genes())
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{
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optimisationSteps.push_back(step);
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genes.push_back(gene);
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if (SimulationRNG::bernoulliTrial(_chance))
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optimisationSteps.push_back(Chromosome::randomOptimisationStep());
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genes.push_back(Chromosome::randomGene());
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}
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return Chromosome(move(optimisationSteps));
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return Chromosome(move(genes));
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};
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}
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