payjoin 0.5.1-alpha

PayJoin Library for the BIP78 Pay to Endpoint protocol.
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

use std::ops::{Div, Mul};

use crate::weight::Weight;

#[derive(Copy, Clone, Eq, PartialEq, Ord, PartialOrd, Debug, Hash)]
pub(crate) struct FeeRate(u64);

impl FeeRate {
    pub(crate) const ZERO: FeeRate = FeeRate(0);

    pub(crate) fn from_sat_per_vb(rate: u64) -> Self { FeeRate(rate * 4) }

    pub(crate) fn from_sat_per_wu(rate: u64) -> Self { FeeRate(rate) }

    pub(crate) fn to_sat_per_vb(self) -> u64 { self.0 * 4 }
}

// Note that Add and Sub are meaningless when it comes to fee rates

impl Mul<Weight> for FeeRate {
    type Output = bitcoin::Amount;

    fn mul(self, rhs: Weight) -> Self::Output { bitcoin::Amount::from_sat(self.0 * u64::from(rhs)) }
}

impl Mul<u64> for FeeRate {
    type Output = Self;

    fn mul(self, rhs: u64) -> Self::Output { FeeRate(self.0 * rhs) }
}

impl Mul<FeeRate> for u64 {
    type Output = FeeRate;

    fn mul(self, rhs: FeeRate) -> Self::Output { FeeRate(self * rhs.0) }
}

impl Div<u64> for FeeRate {
    type Output = Self;

    fn div(self, rhs: u64) -> Self::Output { FeeRate(self.0 / rhs) }
}