/* MIT License
 *
 * Copyright (c) 2023 Tyge Løvset
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

/* cbox: heap allocated boxed type
#include <stc/cstr.h>

typedef struct { cstr name, email; } Person;

Person Person_from(const char* name, const char* email) {
    return (Person){.name = cstr_from(name), .email = cstr_from(email)};
}
Person Person_clone(Person p) {
    p.name = cstr_clone(p.name);
    p.email = cstr_clone(p.email);
    return p;
}
void Person_drop(Person* p) {
    printf("drop: %s %s\n", cstr_str(&p->name), cstr_str(&p->email));
    c_drop(cstr, &p->name, &p->email);
}

#define i_keyclass Person // bind Person clone+drop fn's
#define i_type PBox
#include <stc/cbox.h>

int main() {
    c_auto (PBox, p, q)
    {
        p = PBox_from(Person_from("John Smiths", "josmiths@gmail.com"));
        q = PBox_clone(p);
        cstr_assign(&q.get->name, "Joe Smiths");

        printf("%s %s.\n", cstr_str(&p.get->name), cstr_str(&p.get->email));
        printf("%s %s.\n", cstr_str(&q.get->name), cstr_str(&q.get->email));
    }
}
*/
#include "ccommon.h"

#ifndef CBOX_H_INCLUDED
#define CBOX_H_INCLUDED
#include "forward.h"
#include <stdlib.h>
#include <string.h>

#define cbox_NULL {NULL}
#endif // CBOX_H_INCLUDED

#ifndef _i_prefix
#define _i_prefix cbox_
#endif
#ifdef i_eq
#define _i_eq
#endif
#include "priv/template.h"
typedef i_keyraw _cx_raw;

#if !c_option(c_is_forward)
_cx_deftypes(_c_cbox_types, _cx_self, i_key);
#endif

// constructors (take ownership)
STC_INLINE _cx_self _cx_memb(_init)(void)
    { return c_LITERAL(_cx_self){NULL}; }

STC_INLINE long _cx_memb(_use_count)(const _cx_self* self)
    { return (long)(self->get != NULL); }

STC_INLINE _cx_self _cx_memb(_from_ptr)(_cx_value* p)
    { return c_LITERAL(_cx_self){p}; }

// c++: std::make_unique<i_key>(val)
STC_INLINE _cx_self _cx_memb(_make)(_cx_value val) {
    _cx_self ptr = {_i_alloc(_cx_value)};
    *ptr.get = val; return ptr;
}

STC_INLINE _cx_raw _cx_memb(_toraw)(const _cx_self* self)
    { return i_keyto(self->get); }

// destructor
STC_INLINE void _cx_memb(_drop)(_cx_self* self) {
    if (self->get) {
        i_keydrop(self->get);
        i_free(self->get);
    }
}

STC_INLINE _cx_self _cx_memb(_move)(_cx_self* self) {
    _cx_self ptr = *self; 
    self->get = NULL;
    return ptr;
}

STC_INLINE _cx_value* _cx_memb(_release)(_cx_self* self)
    { return _cx_memb(_move)(self).get; }

STC_INLINE void _cx_memb(_reset)(_cx_self* self) {
    _cx_memb(_drop)(self);
    self->get = NULL;
}

// take ownership of p
STC_INLINE void _cx_memb(_reset_to)(_cx_self* self, _cx_value* p) {
    _cx_memb(_drop)(self);
    self->get = p;
}

#ifndef i_no_emplace
STC_INLINE _cx_self _cx_memb(_from)(_cx_raw raw)
    { return _cx_memb(_make)(i_keyfrom(raw)); }
#else
STC_INLINE _cx_self _cx_memb(_from)(_cx_value val)
    { return _cx_memb(_make)(val); }
#endif

#if !defined i_no_clone
    STC_INLINE _cx_self _cx_memb(_clone)(_cx_self other) {
        if (!other.get)
            return other;
        _cx_self out = {_i_alloc(i_key)};
        *out.get = i_keyclone((*other.get));
        return out;
    }
#endif // !i_no_clone

// take ownership of unowned
STC_INLINE void _cx_memb(_take)(_cx_self* self, _cx_self unowned) {
    _cx_memb(_drop)(self);
    *self = unowned;
}
// transfer ownership from moved; set moved to NULL
STC_INLINE void _cx_memb(_assign)(_cx_self* self, _cx_self* moved) {
    if (moved->get == self->get)
        return;
    _cx_memb(_drop)(self);
    *self = *moved;
    moved->get = NULL;
}

#ifndef i_no_cmp
STC_INLINE int _cx_memb(_raw_cmp)(const _cx_raw* rx, const _cx_raw* ry)
    { return i_cmp(rx, ry); }

STC_INLINE int _cx_memb(_cmp)(const _cx_self* x, const _cx_self* y) {
    _cx_raw rx = i_keyto(x->get), ry = i_keyto(y->get);
    return i_cmp((&rx), (&ry));
}
#endif

#ifdef _i_eq
STC_INLINE bool _cx_memb(_raw_eq)(const _cx_raw* rx, const _cx_raw* ry)
    { return i_eq(rx, ry); }

STC_INLINE bool _cx_memb(_eq)(const _cx_self* x, const _cx_self* y) {
    _cx_raw rx = i_keyto(x->get), ry = i_keyto(y->get);
    return i_eq((&rx), (&ry));
}
#elif !defined i_no_cmp
STC_INLINE bool _cx_memb(_raw_eq)(const _cx_raw* rx, const _cx_raw* ry)
    { return i_cmp(rx, ry) == 0; }

STC_INLINE bool _cx_memb(_eq)(const _cx_self* x, const _cx_self* y)
    { return _cx_memb(_cmp)(x, y) == 0; }
#endif

#ifndef i_no_hash
STC_INLINE uint64_t _cx_memb(_raw_hash)(const _cx_raw* rx)
    { return i_hash(rx); }

STC_INLINE uint64_t _cx_memb(_hash)(const _cx_self* x)
    { _cx_raw rx = i_keyto(x->get); return i_hash((&rx)); }
#endif

#undef _i_eq
#include "priv/template.h"