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use crate::{InputValueError, InputValueResult, ScalarType, Value}; use async_graphql_derive::Scalar; use chrono::NaiveTime; #[Scalar(internal)] impl ScalarType for NaiveTime { fn parse(value: Value) -> InputValueResult<Self> { match value { Value::String(s) => Ok(NaiveTime::parse_from_str(&s, "%H:%M:%S")?), _ => Err(InputValueError::ExpectedType(value)), } } fn to_value(&self) -> Value { Value::String(self.format("%H:%M:%S").to_string()) } }