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plasp/src/plasp/sas/Operator.cpp

88 lines
2.3 KiB
C++

#include <plasp/sas/Operator.h>
#include <iostream>
#include <limits>
#include <plasp/sas/VariableTransition.h>
#include <plasp/utils/Parsing.h>
namespace plasp
{
namespace sas
{
////////////////////////////////////////////////////////////////////////////////////////////////////
//
// Operator
//
////////////////////////////////////////////////////////////////////////////////////////////////////
Operator Operator::fromSAS(std::istream &istream, const Variables &variables)
{
Operator operator_;
utils::parseExpected<std::string>(istream, "begin_operator");
operator_.m_predicate = Predicate::fromSAS(istream);
const auto numberOfPrevailConditions = utils::parse<size_t>(istream);
operator_.m_preconditions.reserve(numberOfPrevailConditions);
for (size_t j = 0; j < numberOfPrevailConditions; j++)
operator_.m_preconditions.emplace_back(Condition::fromSAS(istream, variables));
const auto numberOfEffects = utils::parse<size_t>(istream);
operator_.m_effects.reserve(numberOfEffects);
for (size_t j = 0; j < numberOfEffects; j++)
operator_.m_effects.emplace_back(Effect::fromSAS(istream, variables, operator_.m_preconditions));
operator_.m_costs = utils::parse<size_t>(istream);
utils::parseExpected<std::string>(istream, "end_operator");
return operator_;
}
////////////////////////////////////////////////////////////////////////////////////////////////////
void Operator::printPredicateAsASP(std::ostream &ostream) const
{
ostream << "action(";
m_predicate.printAsASP(ostream);
ostream << ")";
}
////////////////////////////////////////////////////////////////////////////////////////////////////
const Predicate &Operator::predicate() const
{
return m_predicate;
}
////////////////////////////////////////////////////////////////////////////////////////////////////
const Operator::Conditions &Operator::preconditions() const
{
return m_preconditions;
}
////////////////////////////////////////////////////////////////////////////////////////////////////
const Effects &Operator::effects() const
{
return m_effects;
}
////////////////////////////////////////////////////////////////////////////////////////////////////
size_t Operator::costs() const
{
return m_costs;
}
////////////////////////////////////////////////////////////////////////////////////////////////////
}
}