async_graphql/types/external/
floats.rs

1use crate::{InputValueError, InputValueResult, Number, Scalar, ScalarType, Value};
2
3/// The `Float` scalar type represents signed double-precision fractional values as specified by [IEEE 754](https://en.wikipedia.org/wiki/IEEE_floating_point).
4#[Scalar(internal, name = "Float")]
5impl ScalarType for f32 {
6    fn parse(value: Value) -> InputValueResult<Self> {
7        match value {
8            Value::Number(n) => Ok(n
9                .as_f64()
10                .ok_or_else(|| InputValueError::from("Invalid number"))?
11                as Self),
12            _ => Err(InputValueError::expected_type(value)),
13        }
14    }
15
16    fn is_valid(value: &Value) -> bool {
17        matches!(value, Value::Number(_))
18    }
19
20    fn to_value(&self) -> Value {
21        match Number::from_f64(*self as f64) {
22            Some(n) => Value::Number(n),
23            None => Value::Null,
24        }
25    }
26}
27
28/// The `Float` scalar type represents signed double-precision fractional values as specified by [IEEE 754](https://en.wikipedia.org/wiki/IEEE_floating_point).
29#[Scalar(internal, name = "Float")]
30impl ScalarType for f64 {
31    fn parse(value: Value) -> InputValueResult<Self> {
32        match value {
33            Value::Number(n) => Ok(n
34                .as_f64()
35                .ok_or_else(|| InputValueError::from("Invalid number"))?
36                as Self),
37            _ => Err(InputValueError::expected_type(value)),
38        }
39    }
40
41    fn is_valid(value: &Value) -> bool {
42        matches!(value, Value::Number(_))
43    }
44
45    fn to_value(&self) -> Value {
46        match Number::from_f64(*self) {
47            Some(n) => Value::Number(n),
48            None => Value::Null,
49        }
50    }
51}
async_graphql/types/external/floats.rs

async_graphql/types/external/
floats.rs
