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#ifndef STORM_STORAGE_EXPRESSIONS_EXPRESSIONVISITOR_H_
#define STORM_STORAGE_EXPRESSIONS_EXPRESSIONVISITOR_H_
#include <boost/any.hpp>
#include <boost/none.hpp>
namespace storm {
namespace expressions {
// Forward-declare all expression classes.
class IfThenElseExpression;
class BinaryBooleanFunctionExpression;
class BinaryNumericalFunctionExpression;
class BinaryRelationExpression;
class VariableExpression;
class UnaryBooleanFunctionExpression;
class UnaryNumericalFunctionExpression;
class BooleanLiteralExpression;
class IntegerLiteralExpression;
class RationalLiteralExpression;
class ExpressionVisitor {
public:
virtual ~ExpressionVisitor() = default;
virtual boost::any visit(IfThenElseExpression const& expression, boost::any const& data) = 0;
virtual boost::any visit(BinaryBooleanFunctionExpression const& expression, boost::any const& data) = 0;
virtual boost::any visit(BinaryNumericalFunctionExpression const& expression, boost::any const& data) = 0;
virtual boost::any visit(BinaryRelationExpression const& expression, boost::any const& data) = 0;
virtual boost::any visit(VariableExpression const& expression, boost::any const& data) = 0;
virtual boost::any visit(UnaryBooleanFunctionExpression const& expression, boost::any const& data) = 0;
virtual boost::any visit(UnaryNumericalFunctionExpression const& expression, boost::any const& data) = 0;
virtual boost::any visit(BooleanLiteralExpression const& expression, boost::any const& data) = 0;
virtual boost::any visit(IntegerLiteralExpression const& expression, boost::any const& data) = 0;
virtual boost::any visit(RationalLiteralExpression const& expression, boost::any const& data) = 0;
};
}
}
#endif /* STORM_STORAGE_EXPRESSIONS_EXPRESSIONVISITOR_H_ */