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Corrected grammar of initial state facts.

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This commit is contained in:
Patrick Lühne
2017-06-23 03:30:27 +02:00
parent 9360ad3487
commit 2851f8d286
5 changed files with 35 additions and 24 deletions
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44
src/plasp/pddl/TranslatorASP.cpp
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@@ -289,31 +289,41 @@ void TranslatorASP::translateInitialState() const
const auto &facts = m_description.problem.value()->initialState.facts;
// TODO: move to separate header
for (const auto &fact : facts)
{
m_outputStream << std::endl << colorlog::Function("initialState") << "(";
// Translate single predicate
if (fact.is<::pddl::ast::AtomicFormula>() && fact.get<::pddl::ast::AtomicFormula>().is<::pddl::ast::PredicatePointer>())
{
const auto &predicate = fact.get<::pddl::ast::AtomicFormula>().get<::pddl::ast::PredicatePointer>();
const auto handleUnsupported =
[&](const auto &)
{
throw TranslatorException("only predicates and their negations supported in initial state currently");
};
translatePredicateToVariable(m_outputStream, *predicate, true);
}
// Assuming that "not" expression may only contain a predicate
else if (fact.is<::pddl::ast::NotPointer<::pddl::ast::Fact>>())
{
const auto &notExpression = fact.get<::pddl::ast::NotPointer<::pddl::ast::Fact>>();
const auto handleAtomicFormula =
[&](const ::pddl::ast::AtomicFormula &atomicFormula, bool isPositive = true)
{
if (!atomicFormula.is<::pddl::ast::PredicatePointer>())
handleUnsupported(atomicFormula);
if (!notExpression->argument.is<::pddl::ast::AtomicFormula>() || !notExpression->argument.get<::pddl::ast::AtomicFormula>().is<::pddl::ast::PredicatePointer>())
throw TranslatorException("only negations of simple predicates supported in initial state currently");
const auto &predicate = atomicFormula.get<::pddl::ast::PredicatePointer>();
const auto &predicate = notExpression->argument.get<::pddl::ast::AtomicFormula>().get<::pddl::ast::PredicatePointer>();
translatePredicateToVariable(m_outputStream, *predicate, isPositive);
};
translatePredicateToVariable(m_outputStream, *predicate, false);
}
else
throw TranslatorException("only predicates and their negations supported in initial state currently");
const auto handleNot =
[&](const ::pddl::ast::NotPointer<::pddl::ast::AtomicFormula> &not_)
{
handleAtomicFormula(not_->argument, false);
};
const auto handleLiteral =
[&](const ::pddl::ast::Literal &literal)
{
literal.match(handleAtomicFormula, handleNot);
};
fact.match(handleLiteral, handleUnsupported);
m_outputStream << ").";
}