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
use crate::{
AutoStorableHint,
Packed,
StorableHint,
StorageKey,
};
use core::{
fmt::Debug,
marker::PhantomData,
};
use ink_primitives::{
Key,
KeyComposer,
};
#[derive(Default, Copy, Clone, PartialEq, Eq, PartialOrd)]
#[cfg_attr(feature = "std", derive(scale_info::TypeInfo))]
pub struct AutoKey;
impl StorageKey for AutoKey {
const KEY: Key = 0;
}
impl Debug for AutoKey {
fn fmt(&self, f: &mut core::fmt::Formatter) -> core::fmt::Result {
f.debug_struct("AutoKey")
.field("key", &<Self as StorageKey>::KEY)
.finish()
}
}
#[derive(Default, Copy, Clone, Eq, PartialEq, PartialOrd)]
#[cfg_attr(feature = "std", derive(scale_info::TypeInfo))]
pub struct ManualKey<const KEY: Key, ParentKey: StorageKey = ()>(
PhantomData<fn() -> ParentKey>,
);
impl<const KEY: Key, ParentKey: StorageKey> StorageKey for ManualKey<KEY, ParentKey> {
const KEY: Key = KeyComposer::concat(KEY, ParentKey::KEY);
}
impl<const KEY: Key, ParentKey: StorageKey> Debug for ManualKey<KEY, ParentKey> {
fn fmt(&self, f: &mut core::fmt::Formatter) -> core::fmt::Result {
f.debug_struct("ManualKey")
.field("key", &<Self as StorageKey>::KEY)
.finish()
}
}
#[derive(Default, Copy, Clone, PartialEq, Eq, PartialOrd, Debug)]
#[cfg_attr(feature = "std", derive(scale_info::TypeInfo))]
pub struct ResolverKey<L: StorageKey, R: StorageKey>(PhantomData<fn() -> (L, R)>);
impl<L: StorageKey, R: StorageKey> StorageKey for ResolverKey<L, R> {
const KEY: Key = if L::KEY == 0 { R::KEY } else { L::KEY };
}
type FinalKey<T, const KEY: Key, ParentKey> =
ResolverKey<<T as StorableHint<ParentKey>>::PreferredKey, ManualKey<KEY, ParentKey>>;
impl<T, const KEY: Key, ParentKey> AutoStorableHint<ManualKey<KEY, ParentKey>> for T
where
T: StorableHint<ParentKey>,
T: StorableHint<FinalKey<T, KEY, ParentKey>>,
ParentKey: StorageKey,
{
type Type = <T as StorableHint<FinalKey<T, KEY, ParentKey>>>::Type;
}
impl<P> super::storage::private::Sealed for P where P: scale::Decode + scale::Encode {}
impl<P> Packed for P where P: scale::Decode + scale::Encode {}
impl<P> StorageKey for P
where
P: Packed,
{
const KEY: Key = 0;
}
impl<P, Key> StorableHint<Key> for P
where
P: Packed,
Key: StorageKey,
{
type Type = P;
type PreferredKey = AutoKey;
}
#[cfg(test)]
mod tests {
#[macro_export]
macro_rules! storage_hint_works_for_primitive {
( $ty:ty ) => {
paste::item! {
#[test]
#[allow(non_snake_case)]
fn [<$ty _storage_hint_works>] () {
assert_eq!(
::core::any::TypeId::of::<$ty>(),
::core::any::TypeId::of::<<$ty as $crate::StorableHint<$crate::ManualKey<123>>>::Type>()
);
}
}
};
}
mod arrays {
use crate::storage_hint_works_for_primitive;
type Array = [i32; 4];
storage_hint_works_for_primitive!(Array);
type ArrayTuples = [(i32, i32); 2];
storage_hint_works_for_primitive!(ArrayTuples);
}
mod prims {
use crate::storage_hint_works_for_primitive;
use ink_primitives::AccountId;
storage_hint_works_for_primitive!(bool);
storage_hint_works_for_primitive!(String);
storage_hint_works_for_primitive!(AccountId);
storage_hint_works_for_primitive!(i8);
storage_hint_works_for_primitive!(i16);
storage_hint_works_for_primitive!(i32);
storage_hint_works_for_primitive!(i64);
storage_hint_works_for_primitive!(i128);
storage_hint_works_for_primitive!(u8);
storage_hint_works_for_primitive!(u16);
storage_hint_works_for_primitive!(u32);
storage_hint_works_for_primitive!(u64);
storage_hint_works_for_primitive!(u128);
type OptionU8 = Option<u8>;
storage_hint_works_for_primitive!(OptionU8);
type ResultU8 = Result<u8, bool>;
storage_hint_works_for_primitive!(ResultU8);
type BoxU8 = Box<u8>;
storage_hint_works_for_primitive!(BoxU8);
type BoxOptionU8 = Box<Option<u8>>;
storage_hint_works_for_primitive!(BoxOptionU8);
}
mod tuples {
use crate::storage_hint_works_for_primitive;
type TupleSix = (i32, u32, String, u8, bool, Box<Option<i32>>);
storage_hint_works_for_primitive!(TupleSix);
}
}