#ifndef MANDEL_ITERATIONIR_H
#define MANDEL_ITERATIONIR_H

#include <string>
#include <vector>
#include <variant>
#include <any>

#include "IterationFormula.h"
#include "Arena.h"

namespace mnd
{
    namespace ir
    {
        struct NodeBase;

        struct Constant;
        struct Variable;
        struct UnaryOperation;
        struct Negation;
        struct BinaryOperation;
        struct Addition;
        struct Subtraction;
        struct Multiplication;
        struct Atan2;
        struct Pow;
        struct Cos;
        struct Sin;
        struct Exp;
        struct Ln;

        using Node = std::variant<
            Constant,
            Variable,
            Negation,
            Addition,
            Subtraction,
            Multiplication,
            Atan2,
            Pow,
            Cos,
            Sin,
            Exp,
            Ln
        >;

        struct Formula
        {
            util::Arena<Node> nodeArena;
            Node* newA;
            Node* newB;

            std::string toString(void) const;
        };
    }

    ir::Formula expand(const mnd::IterationFormula& fmla);
}


struct mnd::ir::NodeBase
{
    std::any nodeData;
};


struct mnd::ir::Constant : NodeBase
{
    double value;
    inline Constant(double val) : value{ val } {}
};


struct mnd::ir::Variable : NodeBase
{
    std::string name;
    inline Variable(const std::string name) : name{ name } {}
};


struct mnd::ir::UnaryOperation : NodeBase
{
    Node* value;
    inline UnaryOperation(Node* value) : value{ value } {}
};


struct mnd::ir::Negation : mnd::ir::UnaryOperation
{
    inline Negation(Node* value) : UnaryOperation{ value } {}
};


struct mnd::ir::BinaryOperation : NodeBase
{
    Node* left;
    Node* right;
    inline BinaryOperation(Node* left, Node* right) :
        left{ left }, right{ right } {}
};


struct mnd::ir::Addition : mnd::ir::BinaryOperation
{
    inline Addition(Node* left, Node* right) :
        BinaryOperation{ left, right } {}
};


struct mnd::ir::Subtraction : mnd::ir::BinaryOperation
{
    inline Subtraction(Node* left, Node* right) :
        BinaryOperation{ left, right } {}
};


struct mnd::ir::Multiplication : mnd::ir::BinaryOperation
{
    inline Multiplication(Node* left, Node* right) :
        BinaryOperation{ left, right } {}
};


struct mnd::ir::Atan2 : mnd::ir::BinaryOperation
{
    inline Atan2(Node* left, Node* right) :
        BinaryOperation{ left, right } {}
};


struct mnd::ir::Pow : mnd::ir::BinaryOperation
{
    inline Pow(Node* left, Node* right) :
        BinaryOperation{ left, right } {}
};


struct mnd::ir::Cos : mnd::ir::UnaryOperation
{
    inline Cos(Node* value) : UnaryOperation{ value } {}
};


struct mnd::ir::Sin : mnd::ir::UnaryOperation
{
    inline Sin(Node* value) : UnaryOperation{ value } {}
};


struct mnd::ir::Exp : mnd::ir::UnaryOperation
{
    inline Exp(Node* value) : UnaryOperation{ value } {}
};


struct mnd::ir::Ln : mnd::ir::UnaryOperation
{
    inline Ln(Node* value) : UnaryOperation{ value } {}
};


#endif // MANDEL_ITERATIONIR_H