/*-----------------------------------------------------------------------------
 *  Author: Nelso G. Jost (nelsojost@gmail.com)
 *  License: GPLv2
 *  Purpose: Read-Eval-Print-Loop functionality
 *---------------------------------------------------------------------------*/
#ifndef REPL_H
#define REPL_H

#define  HISTORY_MAX  10

class REPL;

typedef struct
{
    const char *name;
    void (*func)(REPL *);
    const char *prototype;
    const char *help;
} REPL_COMMAND;



class REPL
{
public:
    REPL(REPL_COMMAND command_map[]);

    String prompt=">";

    void update(void);
    void print_help(void);
    void log(String msg, bool show_buffer=false);
    String get_arg(int index);

private:
    REPL_COMMAND * _fp_map;
    String _command_buffer="";
    String _history[HISTORY_MAX];
    int _history_index=-1;

    void _backspace(void);
    void _clear_line(void);
    void _complete(void);

    void _history_previous(void);
    void _history_next(void);
    void _history_save(void);

    int _execute_command(void);
};

#endif