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use crate::{registry, ContextSelectionSet, InputValueType, OutputValueType, Result, Type, Value}; use std::borrow::Cow; impl<T: Type> Type for Vec<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: InputValueType> InputValueType for Vec<T> { fn parse(value: &Value) -> Option<Self> { match value { Value::List(values) => { let mut result = Vec::new(); for value in values { result.push(InputValueType::parse(value)?); } Some(result) } _ => None, } } } #[allow(clippy::ptr_arg)] #[async_trait::async_trait] impl<T: OutputValueType + Send + Sync> OutputValueType for Vec<T> { async fn resolve(value: &Self, ctx: &ContextSelectionSet<'_>) -> Result<serde_json::Value> { let mut futures = Vec::with_capacity(value.len()); for (idx, item) in value.iter().enumerate() { let ctx_idx = ctx.with_index(idx); futures.push(async move { OutputValueType::resolve(item, &ctx_idx).await }); } Ok(futures::future::try_join_all(futures).await?.into()) } } impl<T: Type> Type for &[T] { fn type_name() -> Cow<'static, str> { Cow::Owned(format!("[{}]", T::type_name())) } fn create_type_info(registry: &mut registry::Registry) -> String { T::create_type_info(registry) } } #[async_trait::async_trait] impl<T: OutputValueType + Send + Sync> OutputValueType for &[T] { async fn resolve(value: &Self, ctx: &ContextSelectionSet<'_>) -> Result<serde_json::Value> { let mut futures = Vec::with_capacity(value.len()); for (idx, item) in (*value).iter().enumerate() { let ctx_idx = ctx.with_index(idx); futures.push(async move { OutputValueType::resolve(item, &ctx_idx).await }); } Ok(futures::future::try_join_all(futures).await?.into()) } } #[cfg(test)] mod tests { use crate::Type; #[test] fn test_list_type() { assert_eq!(Vec::<i32>::type_name(), "[Int!]"); assert_eq!(Vec::<Option<i32>>::type_name(), "[Int]"); assert_eq!(Option::<Vec::<Option<i32>>>::type_name(), "[Int]"); assert_eq!(Vec::<i32>::qualified_type_name(), "[Int!]!"); assert_eq!(Vec::<Option<i32>>::qualified_type_name(), "[Int]!"); assert_eq!(Option::<Vec::<Option<i32>>>::qualified_type_name(), "[Int]"); } }