#pragma once
#ifndef CALC_PARSER_H
#define CALC_PARSER_H

#include "calcParser.h"
#include "CalcLexer.h"
#include "AST.h"

#include <map>
#include <memory>
#include <string>

namespace calc {

class Parser : public calcParser<std::unique_ptr<AST>> {
    public:
        Parser(CalcLexer lex);

    protected:
        using Value = std::unique_ptr<AST>;
        Token lex() override;
        Value error(Token current, const std::vector<calcParser_Symbol>& expected) override;
        Value reduce_arguments(std::deque<Token> subparts) override;
        Value reduce_assign(std::deque<Token> subparts) override;
        Value reduce_binop(std::deque<Token> subparts) override;
        Value reduce_expr_simple(std::deque<Token> subparts) override;
        Value reduce_functioncall(std::deque<Token> subparts) override;
        Value reduce_functiondef(std::deque<Token> subparts) override;
        Value reduce_idents(std::deque<Token> subparts) override;
        Value reduce_opt_arguments(std::deque<Token> subparts) override;
        Value reduce_opt_idents(std::deque<Token> subparts) override;
        Value reduce_parenthesized(std::deque<Token> subparts) override;
        Value reduce_toplevel(std::deque<Token> subparts) override;
        Value reduce_umin(std::deque<Token> subparts) override;

    private:
        CalcLexer m_lex;
        std::map<std::string, double> m_variables;
        std::map<std::string, std::unique_ptr<AST>> m_functions;
};

} /* calc  */ 
#endif //CALC_PARSER_H