thruput-sdk 0.58.0

Thruput smart-contract SDK for Rust (rv32 guest runtime and native test harness)
Documentation 
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

use super::deletable::Deletable;
use super::node::StorageType;
use core::marker::PhantomData;
use core::ops::{Deref, DerefMut};

/// Read-only borrowed slot. Holds a shared borrow on the parent collection.
pub struct SlotRef<'a, Owner, S: StorageType> {
    slot: S,
    _borrow: PhantomData<&'a Owner>,
}

impl<'a, Owner, S: StorageType> SlotRef<'a, Owner, S> {
    pub fn new(_owner: &'a Owner, slot: S) -> Self {
        Self {
            slot,
            _borrow: PhantomData,
        }
    }
}

impl<Owner, S: StorageType> Deref for SlotRef<'_, Owner, S> {
    type Target = S;

    fn deref(&self) -> &Self::Target {
        &self.slot
    }
}

/// Mutable borrowed slot. Holds an exclusive borrow on the parent collection.
pub struct SlotMut<'a, Owner, S: StorageType> {
    slot: S,
    _borrow: PhantomData<&'a mut Owner>,
}

impl<'a, Owner, S: StorageType> SlotMut<'a, Owner, S> {
    pub fn new(_owner: &'a mut Owner, slot: S) -> Self {
        Self {
            slot,
            _borrow: PhantomData,
        }
    }

    /// Construct without a real reference. The caller must ensure
    /// the owner is already exclusively borrowed for `'a`.
    pub(crate) fn new_detached(slot: S) -> Self {
        Self {
            slot,
            _borrow: PhantomData,
        }
    }
}

impl<Owner, S: StorageType> Deref for SlotMut<'_, Owner, S> {
    type Target = S;

    fn deref(&self) -> &Self::Target {
        &self.slot
    }
}

impl<Owner, S: StorageType> DerefMut for SlotMut<'_, Owner, S> {
    fn deref_mut(&mut self) -> &mut Self::Target {
        &mut self.slot
    }
}

impl<'a, Owner, S> Deletable for SlotMut<'a, Owner, S>
where
    S: StorageType + Deletable,
{
    fn delete_internal(&mut self, exclusive: bool) {
        self.slot.delete_internal(exclusive);
    }
}