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#![allow(clippy::needless_lifetimes)] use uuid::Uuid; use crate::{ parser::{ParseError, ScalarToken, Token}, value::ParseScalarResult, Value, }; #[crate::graphql_scalar(description = "Uuid")] impl<S> GraphQLScalar for Uuid where S: ScalarValue, { fn resolve(&self) -> Value { Value::scalar(self.to_string()) } fn from_input_value(v: &InputValue) -> Option<Uuid> { v.as_string_value().and_then(|s| Uuid::parse_str(s).ok()) } fn from_str<'a>(value: ScalarToken<'a>) -> ParseScalarResult<'a, S> { if let ScalarToken::String(value) = value { Ok(S::from(value.to_owned())) } else { Err(ParseError::UnexpectedToken(Token::Scalar(value))) } } } #[cfg(test)] mod test { use crate::{value::DefaultScalarValue, InputValue}; use uuid::Uuid; #[test] fn uuid_from_input_value() { let raw = "123e4567-e89b-12d3-a456-426655440000"; let input: InputValue<DefaultScalarValue> = InputValue::scalar(raw.to_string()); let parsed: Uuid = crate::FromInputValue::from_input_value(&input).unwrap(); let id = Uuid::parse_str(raw).unwrap(); assert_eq!(parsed, id); } }