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Parse decimals as BigDecimal (#2644)

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Use implicit serde from BigDecimal crate
This commit is contained in:
Chris Gillespie
2020-10-06 18:01:40 -07:00
committed by GitHub
parent f14f4e39c5
commit 54326869e4
5 changed files with 32 additions and 58 deletions
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2
crates/nu-protocol/src/value/primitive.rs
View File

@ -1,7 +1,6 @@
use crate::type_name::ShellTypeName;
use crate::value::column_path::ColumnPath;
use crate::value::range::{Range, RangeInclusion};
use crate::value::serde_bigdecimal;
use bigdecimal::BigDecimal;
use chrono::{DateTime, Utc};
use nu_errors::{ExpectedRange, ShellError};
@ -27,7 +26,6 @@ pub enum Primitive {
/// A "big int", an integer with arbitrarily large size (aka not limited to 64-bit)
Int(BigInt),
/// A "big decimal", an decimal number with arbitrarily large size (aka not limited to 64-bit)
#[serde(with = "serde_bigdecimal")]
Decimal(BigDecimal),
/// A count in the number of bytes, used as a filesize
Filesize(u64),

26
crates/nu-protocol/src/value/serde_bigdecimal.rs
View File

@ -1,26 +0,0 @@
use bigdecimal::BigDecimal;
use num_traits::cast::FromPrimitive;
use num_traits::cast::ToPrimitive;
/// Enable big decimal serialization by providing a `serialize` function
pub fn serialize<S>(big_decimal: &BigDecimal, serializer: S) -> Result<S::Ok, S::Error>
where
S: serde::Serializer,
{
serde::Serialize::serialize(
&big_decimal
.to_f64()
.ok_or_else(|| serde::ser::Error::custom("expected a f64-sized bignum"))?,
serializer,
)
}
/// Enable big decimal deserialization by providing a `deserialize` function
pub fn deserialize<'de, D>(deserializer: D) -> Result<BigDecimal, D::Error>
where
D: serde::Deserializer<'de>,
{
let x: f64 = serde::Deserialize::deserialize(deserializer)?;
Ok(BigDecimal::from_f64(x)
.ok_or_else(|| serde::de::Error::custom("expected a f64-sized bigdecimal"))?)
}