36 lines
1.1 KiB
Rust
36 lines
1.1 KiB
Rust
use crate::{ContextSelectionSet, GQLInputValue, GQLOutputValue, GQLType, Result, Value};
|
|
use std::borrow::Cow;
|
|
|
|
impl<T: GQLType> GQLType for Option<T> {
|
|
fn type_name() -> Cow<'static, str> {
|
|
let name = T::type_name();
|
|
Cow::Owned(format!("{}", &name[..name.len() - 1]))
|
|
}
|
|
}
|
|
|
|
impl<T: GQLInputValue> GQLInputValue for Option<T> {
|
|
fn parse(value: Value) -> Result<Self> {
|
|
match value {
|
|
Value::Null => Ok(None),
|
|
_ => Ok(Some(GQLInputValue::parse(value)?)),
|
|
}
|
|
}
|
|
|
|
fn parse_from_json(value: serde_json::Value) -> Result<Self> {
|
|
match value {
|
|
serde_json::Value::Null => Ok(None),
|
|
_ => Ok(Some(GQLInputValue::parse_from_json(value)?)),
|
|
}
|
|
}
|
|
}
|
|
|
|
#[async_trait::async_trait]
|
|
impl<T: GQLOutputValue + Sync> GQLOutputValue for Option<T> {
|
|
async fn resolve(&self, ctx: &ContextSelectionSet<'_>) -> Result<serde_json::Value> where {
|
|
if let Some(inner) = self {
|
|
inner.resolve(ctx).await
|
|
} else {
|
|
Ok(serde_json::Value::Null)
|
|
}
|
|
}
|
|
} |