#ifndef VALUE_H_
#define VALUE_H_

#include <string>

#include "register_address.h"

class evaluator;

enum value_type {
	VALUE_TYPE_GENERIC,
	VALUE_TYPE_TREE,
	VALUE_TYPE_CONST,
	VALUE_TYPE_FLOAT
};

class value {
public:
	value(enum value_type type);

	virtual value * simplify() = 0;
	virtual value * clone() = 0;
	virtual std::string to_string() = 0;
	enum value_type get_type();

private:
	enum value_type m_type;
};

class tree_value : public value {
public:
	tree_value(evaluator *, value * lchild, value * rchild);
	value * simplify();
	value * clone();
	std::string to_string();
private:
	evaluator * m_evaluator;
	value * m_lchild;
	value * m_rchild;
};

class float_value : public value {
public:
	float_value();
	float_value(float init_value);
	value * simplify();
	value * clone();
	std::string to_string();

	void set_value(float value);

	bool m_has_value;
	float m_value;
};

class const_value : public value {
public:
	const_value(
		register_address reg,
		float_value * value);
	value * simplify();
	value * clone();
	std::string to_string();
private:
	register_address m_reg_address;
	float_value * m_value;
};

#endif //VALUE_H_