primitives/
is_default.rs

1use crate::{
2    account::{Account, CodeInfo},
3    hash::KECCAK_EMPTY,
4    DepositList, SponsorInfo, StorageValue, VoteStakeList,
5};
6use cfx_types::{Address, U256};
7use std::default::Default;
8
9/// This trait checks whether a variable equals to initialization value.
10/// For a variable equals to the initialization value, the world-state should
11/// treat is as None value.
12pub trait IsDefault {
13    fn is_default(&self) -> bool;
14}
15
16impl IsDefault for Account {
17    fn is_default(&self) -> bool {
18        self.balance == U256::zero()
19            && self.nonce == U256::zero()
20            && self.code_hash == KECCAK_EMPTY
21            && self.staking_balance == U256::zero()
22            && self.collateral_for_storage == U256::zero()
23            && self.accumulated_interest_return == U256::zero()
24            && self.admin == Address::default()
25            && self.sponsor_info == SponsorInfo::default()
26    }
27}
28
29impl IsDefault for CodeInfo {
30    fn is_default(&self) -> bool {
31        self.code.len() == 0 && self.owner == Address::default()
32    }
33}
34
35impl IsDefault for DepositList {
36    fn is_default(&self) -> bool { self.0.is_empty() }
37}
38
39impl IsDefault for VoteStakeList {
40    fn is_default(&self) -> bool { self.0.is_empty() }
41}
42
43impl IsDefault for StorageValue {
44    fn is_default(&self) -> bool {
45        self.value == U256::zero()
46            && (self.owner == Some(Address::default()) || self.owner == None)
47    }
48}
49
50impl IsDefault for U256 {
51    fn is_default(&self) -> bool { self.is_zero() }
52}
53
54impl IsDefault for bool {
55    fn is_default(&self) -> bool { !self }
56}
primitives/is_default.rs

primitives/
is_default.rs
