Variable.hpp

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//
// Created by Matthew McCall on 8/15/23.
//
 
#ifndef OASIS_VARIABLE_HPP
#define OASIS_VARIABLE_HPP
 
#include <stdexcept>
#include <string>
 
#include "LeafExpression.hpp"
 
namespace Oasis {
 
class Variable : public LeafExpression<Variable> {
public:
    Variable() = default;
    Variable(const Variable& other) = default;
 
    explicit Variable(std::string name);
 
    [[nodiscard]] virtual auto Equals(const Expression& other) const -> bool final;
 
    EXPRESSION_TYPE(Variable)
    EXPRESSION_CATEGORY(UnExp)
 
    
    [[nodiscard]] auto GetName() const -> std::string;
 
    [[nodiscard]] auto Integrate(const Expression& integrationVariable) const -> std::unique_ptr<Expression> final;
 
    auto Substitute(const Expression& var, const Expression& val) -> std::unique_ptr<Expression> override;
 
    auto operator=(const Variable& other) -> Variable& = default;
 
private:
    std::string name {};
};
 
} // Oasis
 
#endif // OASIS_VARIABLE_HPP