39 lines
1.2 KiB
Rust
39 lines
1.2 KiB
Rust
use crate::{Result, Scalar, Value};
|
|
|
|
macro_rules! impl_integer_scalars {
|
|
($($ty:ty),*) => {
|
|
$(
|
|
impl Scalar for $ty {
|
|
fn type_name() -> &'static str {
|
|
"Int"
|
|
}
|
|
|
|
fn description() -> Option<&'static str> {
|
|
Some("The `Int` scalar type represents non-fractional signed whole numeric values. Int can represent values between -(2^31) and 2^31 - 1.")
|
|
}
|
|
|
|
fn parse(value: Value) -> Option<Self> {
|
|
match value {
|
|
Value::Int(n) => Some(n.as_i64().unwrap() as Self),
|
|
_ => None
|
|
}
|
|
}
|
|
|
|
fn parse_from_json(value: serde_json::Value) -> Option<Self> {
|
|
match value {
|
|
serde_json::Value::Number(n) if n.is_i64() => Some(n.as_i64().unwrap() as Self),
|
|
serde_json::Value::Number(n) => Some(n.as_f64().unwrap() as Self),
|
|
_ => None,
|
|
}
|
|
}
|
|
|
|
fn to_json(&self) -> Result<serde_json::Value> {
|
|
Ok((*self).into())
|
|
}
|
|
}
|
|
)*
|
|
};
|
|
}
|
|
|
|
impl_integer_scalars!(i8, i16, i32, i64, u8, u16, u32, u64);
|