#ifndef HONEYSUCKLE_H
#define HONEYSUCKLE_H

#include <stdbool.h>

#include <lua.h>
#include <lualib.h>
#include <lauxlib.h>

#include "va_nargs.h"

/* type constants */
typedef enum 
  { HS_BOOL,
    HS_INT,
    HS_NUM,
    HS_STR,
    HS_TBL,
    HS_FUNC,
    HS_CFUNC,
    HS_USER,
    HS_LIGHT,
    HS_NIL,
    HS_ANY,
  } hs_type;

const char* hs_type_to_string(hs_type type);

/* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 *
 * hs_parse_args and hs_parse_overloaded
 *
 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 */

struct hs_arg {
  hs_type type;
  union {
    bool *boolean;
    lua_Integer *integer;
    lua_Number *number;
    char **string;
    int *stack_index;
    lua_CFunction *function;
    void **userdata;
  } ptr;
};

#define hs_bool(x)  { .type=HS_BOOL,  .ptr.boolean = &(x) }
#define hs_int(x)   { .type=HS_INT,   .ptr.integer = &(x) }
#define hs_num(x)   { .type=HS_NUM,   .ptr.number = &(x) }
#define hs_str(x)   { .type=HS_STR,   .ptr.string = &(x) }
#define hs_tbl(x)   { .type=HS_TBL,   .ptr.stack_index = &(x) }
#define hs_func(x)  { .type=HS_FUNC,  .ptr.stack_index = &(x) }
#define hs_cfunc(x) { .type=HS_CFUNC, .ptr.function = &(x) }
#define hs_user(x)  { .type=HS_USER,  .ptr.userdata = &(x) }
#define hs_light(x) { .type=HS_LIGHT, .ptr.userdata = &(x) }
#define hs_nil(x)   { .type=HS_NIL,   .ptr.stack_index = &(x) }
#define hs_any(x)   { .type=HS_ANY,   .ptr.stack_index = &(x) }

void hs_parse_args_(lua_State *L, int n_args, struct hs_arg *arguments);

#define hs_parse_args(L, ...)						\
  hs_parse_args_(L, VA_NARGS(__VA_ARGS__)/2, (struct hs_arg[]) { __VA_ARGS__ })
  

//int hs_parse_overloaded_(lua_State *L, ...);

int hs_create_table(lua_State *L, ...);

void hs_process_table(lua_State *L, int table_index, void *data, ...);
// default processors
void hs_pt_set_boolean(bool value, void *data);
void hs_pt_set_integer(lua_Integer value, void *data);
void hs_pt_set_number(lua_Number value, void *data);
void hs_pt_set_string(const char *value, void *data);

void hs_vpushstring(lua_State *L, const char *format_string, va_list args);
void hs_pushstring(lua_State *L, const char *format_string, ...);


// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

void hs_throw_error(lua_State *L, const char *format_string, ...);
int hs_traceback(lua_State *L);
int hs_call(lua_State *L, int nargs, int nret);

#define hs_rstore(L) luaL_ref(L, LUA_REGISTRYINDEX);
#define hs_rload(L, ref) lua_rawgeti(L, LUA_REGISTRYINDEX, ref)
#define hs_rdel(L, ref) luaL_unref(L, LUA_REGISTRYINDEX, ref)

#endif