62 lines
2.0 KiB
Rust
62 lines
2.0 KiB
Rust
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use crate::parser::types::Field;
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use crate::{
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registry, ContextSelectionSet, InputValueResult, InputValueType, OutputValueType, Positioned,
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Result, Type, Value,
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};
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use std::borrow::Cow;
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use std::collections::LinkedList;
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impl<T: Type> Type for LinkedList<T> {
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fn type_name() -> Cow<'static, str> {
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Cow::Owned(format!("[{}]", T::qualified_type_name()))
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}
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fn qualified_type_name() -> String {
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format!("[{}]!", T::qualified_type_name())
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}
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fn create_type_info(registry: &mut registry::Registry) -> String {
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T::create_type_info(registry);
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Self::qualified_type_name()
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}
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}
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impl<T: InputValueType> InputValueType for LinkedList<T> {
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fn parse(value: Option<Value>) -> InputValueResult<Self> {
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match value.unwrap_or_default() {
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Value::List(values) => {
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let mut result = Self::default();
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for elem_value in values {
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result.extend(std::iter::once(InputValueType::parse(Some(elem_value))?));
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}
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Ok(result)
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}
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value => Ok({
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let mut result = Self::default();
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result.extend(std::iter::once(InputValueType::parse(Some(value))?));
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result
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}),
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}
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}
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fn to_value(&self) -> Value {
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Value::List(self.iter().map(InputValueType::to_value).collect())
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}
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}
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#[async_trait::async_trait]
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impl<T: OutputValueType + Send + Sync> OutputValueType for LinkedList<T> {
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async fn resolve(
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&self,
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ctx: &ContextSelectionSet<'_>,
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field: &Positioned<Field>,
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) -> Result<serde_json::Value> {
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let mut futures = Vec::with_capacity(self.len());
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for (idx, item) in self.iter().enumerate() {
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let ctx_idx = ctx.with_index(idx);
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futures.push(async move { OutputValueType::resolve(item, &ctx_idx, field).await });
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}
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Ok(futures::future::try_join_all(futures).await?.into())
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}
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}
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