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monero-serai: fee calculation parity with Monero's wallet2 (#301)

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* monero-serai: fee calculation parity with Monero's wallet2

* Minor lint

---------

Co-authored-by: Luke Parker <lukeparker5132@gmail.com>
This commit is contained in:
Justin Berman
2023-07-19 12:06:05 -07:00
committed by GitHub
parent 38bcedbf11
commit 228e36a12d
15 changed files with 770 additions and 243 deletions
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12
coins/monero/src/wallet/decoys.rs
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@@ -15,6 +15,7 @@ use rand_distr::num_traits::Float;
use curve25519_dalek::edwards::EdwardsPoint;
use crate::{
serialize::varint_len,
wallet::SpendableOutput,
rpc::{RpcError, RpcConnection, Rpc},
};
@@ -135,12 +136,17 @@ fn offset(ring: &[u64]) -> Vec<u64> {
/// Decoy data, containing the actual member as well (at index `i`).
#[derive(Clone, PartialEq, Eq, Debug, Zeroize, ZeroizeOnDrop)]
pub struct Decoys {
pub i: u8,
pub offsets: Vec<u64>,
pub ring: Vec<[EdwardsPoint; 2]>,
pub(crate) i: u8,
pub(crate) offsets: Vec<u64>,
pub(crate) ring: Vec<[EdwardsPoint; 2]>,
}
#[allow(clippy::len_without_is_empty)]
impl Decoys {
pub fn fee_weight(offsets: &[u64]) -> usize {
varint_len(offsets.len()) + offsets.iter().map(|offset| varint_len(*offset)).sum::<usize>()
}
pub fn len(&self) -> usize {
self.offsets.len()
}