VariableExpression.h

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#pragma once
 
#include "storm/storage/expressions/BaseExpression.h"
#include "storm/storage/expressions/Variable.h"
#include "storm/utility/OsDetection.h"
 
namespace storm {
namespace expressions {
class VariableExpression : public BaseExpression {
   public:
    VariableExpression(Variable const& variable);
 
    // Instantiate constructors and assignments with their default implementations.
    VariableExpression(VariableExpression const&) = default;
    VariableExpression& operator=(VariableExpression const&) = delete;
    VariableExpression(VariableExpression&&) = default;
    VariableExpression& operator=(VariableExpression&&) = delete;
 
    virtual ~VariableExpression() = default;
 
    // Override base class methods.
    virtual bool evaluateAsBool(Valuation const* valuation = nullptr) const override;
    virtual int_fast64_t evaluateAsInt(Valuation const* valuation = nullptr) const override;
    virtual double evaluateAsDouble(Valuation const* valuation = nullptr) const override;
    virtual std::string const& getIdentifier() const override;
    virtual bool containsVariables() const override;
    virtual bool isVariable() const override;
    virtual void gatherVariables(std::set<storm::expressions::Variable>& variables) const override;
    virtual std::shared_ptr<BaseExpression const> simplify() const override;
    virtual boost::any accept(ExpressionVisitor& visitor, boost::any const& data) const override;
    virtual bool isVariableExpression() const override;

    std::string const& getVariableName() const;

    Variable const& getVariable() const;
 
   protected:
    // Override base class method.
    virtual void printToStream(std::ostream& stream) const override;
 
   private:
    // The variable that is represented by this expression.
    Variable variable;
};
}  // namespace expressions
}  // namespace storm