#ifndef jk_PARSER_HPP
#define jk_PARSER_HPP

#include "commons.hpp"
#include "Logger.hpp"
#include "Lexer.hpp"

namespace jk
{
  JK_ERROR(syntax_error);

  class Parser
  {
  public:
    explicit Parser(Logger& logger, std::shared_ptr<Lexer> lexer);
    virtual ~Parser();

    std::shared_ptr<Node> parse(std::string const& source);

  private:
    Logger& m_logger;
    std::shared_ptr<Lexer> m_lexer;
    std::vector<std::shared_ptr<Node>> m_tokens;
    size_t m_cursor;

    std::shared_ptr<Node> current() const;
    Loc loc() const;
    std::shared_ptr<Node> consume();
    std::shared_ptr<Node> consume(NodeType type);
    bool type_is(NodeType type, int lookahead=0) const;

    std::shared_ptr<Node> parse_prog();
    std::shared_ptr<Node> parse_expr();
    std::shared_ptr<Node> parse_vardecl();
    std::shared_ptr<Node> parse_lambda();
    std::shared_ptr<Node> parse_params();
    std::shared_ptr<Node> parse_body();
    std::shared_ptr<Node> parse_funcall();
    std::shared_ptr<Node> parse_literal();
  };
}

#endif