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Introduced from float API for Monero quantities

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This commit is contained in:
Franck Royer 2021-02-08 15:24:32 +11:00
parent b5b990257a
commit 60e0b9382c
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GPG Key ID: A82ED75A8DFC50A4
3 changed files with 16 additions and 5 deletions
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5
Cargo.lock generated
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@ -2885,10 +2885,11 @@ dependencies = [
[[package]]
name = "rust_decimal"
version = "1.9.0"
version = "1.10.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "a5c739ba050709eae138f053356d27ff818d71fe54ce5a8d9f4c7a660bfb6684"
checksum = "e3e5a94e2006dd60c603d8481c65b665b4b6694f78d23e15869ad10eb883e36e"
dependencies = [
"arrayvec",
"num-traits",
"serde",
]

2
swap/Cargo.toml
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@ -40,7 +40,7 @@ pem = "0.8"
prettytable-rs = "0.8"
rand = "0.7"
reqwest = { version = "0.11", default-features = false }
rust_decimal = "1.8"
rust_decimal = "1.10"
serde = { version = "1", features = ["derive"] }
serde_cbor = "0.11"
serde_derive = "1.0"

14
swap/src/monero.rs
View File

@ -15,6 +15,7 @@ use rust_decimal::{
};
use serde::{Deserialize, Serialize};
use std::{
convert::TryFrom,
fmt::Display,
ops::{Add, Mul, Sub},
str::FromStr,
@ -88,13 +89,22 @@ impl Amount {
self.0
}
pub fn from_monero(amount: f64) -> Result<Self> {
let decimal = Decimal::try_from(amount)?;
Self::from_decimal(decimal)
}
pub fn parse_monero(amount: &str) -> Result<Self> {
let decimal = Decimal::from_str(amount)?;
Self::from_decimal(decimal)
}
fn from_decimal(amount: Decimal) -> Result<Self> {
let piconeros_dec =
decimal.mul(Decimal::from_u64(PICONERO_OFFSET).expect("constant to fit into u64"));
amount.mul(Decimal::from_u64(PICONERO_OFFSET).expect("constant to fit into u64"));
let piconeros = piconeros_dec
.to_u64()
.ok_or_else(|| OverflowError(amount.to_owned()))?;
.ok_or_else(|| OverflowError(amount.to_string()))?;
Ok(Amount(piconeros))
}
}