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use std::borrow::Cow; use std::cmp::Eq; use std::collections::HashSet; use std::hash::Hash; use crate::parser::types::Field; use crate::resolver_utils::resolve_list; use crate::{ registry, ContextSelectionSet, InputType, InputValueError, InputValueResult, OutputType, Positioned, Result, ServerResult, Type, Value, }; impl<T: Type> Type for HashSet<T> { fn type_name() -> Cow<'static, str> { Cow::Owned(format!("[{}]", T::qualified_type_name())) } fn qualified_type_name() -> String { format!("[{}]!", T::qualified_type_name()) } fn create_type_info(registry: &mut registry::Registry) -> String { T::create_type_info(registry); Self::qualified_type_name() } } impl<T: InputType + Hash + Eq> InputType for HashSet<T> { fn parse(value: Option<Value>) -> InputValueResult<Self> { match value.unwrap_or_default() { Value::List(values) => values .into_iter() .map(|value| InputType::parse(Some(value))) .collect::<Result<_, _>>() .map_err(InputValueError::propagate), value => Ok({ let mut result = Self::default(); result.insert(InputType::parse(Some(value)).map_err(InputValueError::propagate)?); result }), } } fn to_value(&self) -> Value { Value::List(self.iter().map(InputType::to_value).collect()) } } #[async_trait::async_trait] impl<T: OutputType + Hash + Eq> OutputType for HashSet<T> { async fn resolve( &self, ctx: &ContextSelectionSet<'_>, field: &Positioned<Field>, ) -> ServerResult<Value> { resolve_list(ctx, field, self, Some(self.len())).await } }