/*
 * IntegerVariable.h
 *
 *  Created on: 08.01.2013
 *      Author: Christian Dehnert
 */

#ifndef STORM_IR_INTEGERVARIABLE_H_
#define STORM_IR_INTEGERVARIABLE_H_

#include <memory>

#include "src/ir/Variable.h"
#include "expressions/BaseExpression.h"

namespace storm {
    
    namespace parser {
        namespace prism {
            class VariableState;
        } // namespace prismparser
    } // namespace parser
    
    namespace ir {
        
        /*!
         * A class representing an integer variable.
         */
        class IntegerVariable : public Variable {
        public:
            /*!
             * Default constructor. Creates an integer variable without a name and lower and upper bounds.
             */
            IntegerVariable();
            
            /*!
             * Creates a boolean variable with the given name and the given initial value.
             *
             * @param localIndex A module-local unique index for the variable.
             * @param globalIndex A globally unique index for the variable.
             * @param variableName The name of the variable.
             * @param lowerBound the lower bound of the domain of the variable.
             * @param upperBound the upper bound of the domain of the variable.
             * @param initialValue the expression that defines the initial value of the variable.
             */
            IntegerVariable(uint_fast64_t localIndex, uint_fast64_t globalIndex, std::string const& variableName, std::shared_ptr<storm::ir::expressions::BaseExpression> lowerBound, std::shared_ptr<storm::ir::expressions::BaseExpression> upperBound, std::shared_ptr<storm::ir::expressions::BaseExpression> initialValue = std::shared_ptr<storm::ir::expressions::BaseExpression>(nullptr));
            
            /*!
             * Creates a copy of the given integer variable and performs the provided renaming.
             *
             * @param oldVariable The variable to copy.
             * @param newName New name of this variable.
             * @param newGlobalIndex The new global index of the variable.
             * @param renaming A mapping from names that are to be renamed to the names they are to be
             * replaced with.
             * @param variableState An object knowing about the variables in the system.
             */
            IntegerVariable(IntegerVariable const& oldVariable, std::string const& newName, uint_fast64_t newGlobalIndex, std::map<std::string, std::string> const& renaming, storm::parser::prism::VariableState const& variableState);
            
            /*!
             * Retrieves the lower bound for this integer variable.
             * @returns the lower bound for this integer variable.
             */
            std::shared_ptr<storm::ir::expressions::BaseExpression> getLowerBound() const;
            
            /*!
             * Retrieves the upper bound for this integer variable.
             * @returns the upper bound for this integer variable.
             */
            std::shared_ptr<storm::ir::expressions::BaseExpression> getUpperBound() const;
            
            /*!
             * Retrieves a string representation of this variable.
             * @returns a string representation of this variable.
             */
            std::string toString() const;
            
        private:
            // The lower bound of the domain of the variable.
            std::shared_ptr<storm::ir::expressions::BaseExpression> lowerBound;
            
            // The upper bound of the domain of the variable.
            std::shared_ptr<storm::ir::expressions::BaseExpression> upperBound;
        };
        
    } // namespace ir
} // namespace storm

#endif /* STORM_IR_INTEGERVARIABLE_H_ */