1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
|
#pragma once
#include "script.hpp"
#include "compat/assert.hpp"
#include <utility>
#include <cr/StringView.h>
#include <cr/Pointer.h>
namespace floormat::detail_Script {
template<typename S, typename Obj>
concept BaseScript =
requires (S& script, const bptr<Obj>& obj, size_t& i, const Ns& ns)
{
requires std::is_base_of_v<base_script, S>;
script.on_init(obj);
script.on_update(obj, i, ns);
script.on_destroy(obj, script_destroy_reason::COUNT);
script.delete_self();
script.~S();
};
template<typename S, typename Obj>
requires requires ()
{
requires BaseScript<S, Obj>;
requires std::is_base_of_v<object, Obj>;
}
CORRADE_ALWAYS_INLINE
void concept_check() {}
} // namespace floormat::detail_Script
namespace floormat {
#define FM_ASSERT_SCRIPT_STATE(new_state) (base_script::_assert_state(_state, (new_state), __FILE__, __LINE__))
template <typename S, typename Obj> Script<S, Obj>::~Script() noexcept
{
fm_assert(_state < script_lifecycle::COUNT);
switch (_state)
{
case script_lifecycle::no_init:
case script_lifecycle::torn_down:
_state = (script_lifecycle)-1;
break;
case script_lifecycle::COUNT:
std::unreachable();
case script_lifecycle::created:
case script_lifecycle::destroying:
case script_lifecycle::initializing:
fm_abort("invalid state '%s' in script destructor",
base_script::state_name(_state).data());
}
}
template <typename S, typename Obj>
Script<S, Obj>::Script(): ptr{nullptr}, _state{script_lifecycle::no_init}
{
detail_Script::concept_check<S, Obj>();
}
template <typename S, typename Obj> script_lifecycle Script<S, Obj>::state() const { return _state; }
template<typename S, typename Obj> Script<S, Obj>::operator bool() const { return ptr; }
template <typename S, typename Obj>
S* Script<S, Obj>::operator->()
{
FM_ASSERT_SCRIPT_STATE(script_lifecycle::created);
fm_debug_assert(ptr);
return ptr;
}
template<typename S, typename Obj>
void Script<S, Obj>::do_create(S* p)
{
if (!p)
p = make_empty();
FM_ASSERT_SCRIPT_STATE(script_lifecycle::no_init);
_state = script_lifecycle::initializing;
ptr = p;
}
template<typename S, typename Obj>
void Script<S, Obj>::do_create(Pointer<S> p)
{
do_create(p.release());
}
template <typename S, typename Obj>
void Script<S, Obj>::do_initialize(const bptr<Obj>& obj)
{
switch (_state)
{
default:
FM_ASSERT_SCRIPT_STATE(script_lifecycle::initializing);
std::unreachable();
case script_lifecycle::no_init:
ptr = make_empty();
[[fallthrough]];
case script_lifecycle::initializing:
_state = script_lifecycle::created;
ptr->on_init(obj);
return;
}
std::unreachable();
}
template <typename S, typename Obj>
void Script<S, Obj>::do_reassign(S* p, const bptr<Obj>& obj)
{
if (!p) [[unlikely]]
return do_clear(obj);
FM_ASSERT_SCRIPT_STATE(script_lifecycle::created);
fm_debug_assert(ptr);
ptr->on_destroy(obj, script_destroy_reason::unassign);
ptr->delete_self();
ptr = p;
p->on_init(obj);
}
template <typename S, typename Obj>
void Script<S, Obj>::do_reassign(Pointer<S> p, const bptr<Obj>& obj)
{
return do_reassign(p.release(), obj);
}
template <typename S, typename Obj>
void Script<S, Obj>::do_clear(const bptr<Obj>& obj)
{
FM_ASSERT_SCRIPT_STATE(script_lifecycle::created);
fm_debug_assert(ptr);
ptr->on_destroy(obj, script_destroy_reason::unassign);
ptr->delete_self();
ptr = make_empty();
}
template <typename S, typename Obj>
void Script<S, Obj>::do_destroy_pre(const bptr<Obj>& obj, script_destroy_reason r)
{
FM_ASSERT_SCRIPT_STATE(script_lifecycle::created);
_state = script_lifecycle::destroying;
ptr->on_destroy(obj, r);
}
template <typename S, typename Obj>
void Script<S, Obj>::do_finish_destroy()
{
FM_ASSERT_SCRIPT_STATE(script_lifecycle::destroying);
_state = script_lifecycle::torn_down;
ptr->delete_self();
ptr = nullptr;
}
template <typename S, typename Obj>
void Script<S, Obj>::do_ensure_torn_down()
{
FM_ASSERT_SCRIPT_STATE(script_lifecycle::torn_down);
}
template <typename S, typename Obj>
void Script<S, Obj>::do_error_unwind()
{
fm_assert(_state < script_lifecycle::COUNT);
switch (_state)
{
using enum script_lifecycle;
case COUNT: std::unreachable();
case created:
case initializing:
case destroying:
ptr->delete_self();
ptr = nullptr;
break;
case no_init:
case torn_down:
break;
}
}
#undef FM_ASSERT_SCRIPT_STATE
} // namespace floormat
|
