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Avoiding empty arguments in n-ary expressions.

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This commit is contained in:
Patrick Lühne 2016-06-13 14:04:12 +02:00
parent 2c3481d027
commit fdbcb261df
1 changed files with 7 additions and 1 deletions
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6
include/plasp/pddl/expressions/NAry.h
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@ -83,6 +83,9 @@ std::unique_ptr<Derived> NAry<Derived>::parse(Context &context,
template<class Derived> template<class Derived>
void NAry<Derived>::addArgument(const Expression *argument) void NAry<Derived>::addArgument(const Expression *argument)
{ {
if (!argument)
return;
m_arguments.emplace_back(argument); m_arguments.emplace_back(argument);
} }
@ -91,6 +94,9 @@ void NAry<Derived>::addArgument(const Expression *argument)
template<class Derived> template<class Derived>
void NAry<Derived>::addArgument(ExpressionPointer &&argument) void NAry<Derived>::addArgument(ExpressionPointer &&argument)
{ {
if (!argument)
return;
m_argumentStorage.emplace_back(std::move(argument)); m_argumentStorage.emplace_back(std::move(argument));
m_arguments.emplace_back(m_argumentStorage.back().get()); m_arguments.emplace_back(m_argumentStorage.back().get());
} }