async-graphql/src/types/external/json_object/hashbrown_hashmap.rs

96 lines
2.8 KiB
Rust

use std::{
borrow::Cow, collections::HashMap as StdHashMap, fmt::Display, hash::Hash, str::FromStr,
};
use async_graphql_parser::{types::Field, Positioned};
use async_graphql_value::{from_value, to_value};
use hashbrown::HashMap;
use indexmap::IndexMap;
use serde::{de::DeserializeOwned, Serialize};
use crate::{
registry::Registry, ContextSelectionSet, InputType, InputValueError, InputValueResult, Name,
OutputType, ServerResult, Value,
};
impl<K, V> InputType for HashMap<K, V>
where
K: ToString + FromStr + Eq + Hash + Send + Sync,
K::Err: Display,
V: Serialize + DeserializeOwned + Send + Sync,
{
type RawValueType = Self;
fn type_name() -> Cow<'static, str> {
<StdHashMap<K, V> as InputType>::type_name()
}
fn create_type_info(registry: &mut Registry) -> String {
<StdHashMap<K, V> as InputType>::create_type_info(registry)
}
fn parse(value: Option<Value>) -> InputValueResult<Self> {
let value = value.unwrap_or_default();
match value {
Value::Object(map) => map
.into_iter()
.map(|(name, value)| {
Ok((
K::from_str(&name).map_err(|err| {
InputValueError::<Self>::custom(format!("object key: {}", err))
})?,
from_value(value).map_err(|err| format!("object value: {}", err))?,
))
})
.collect::<Result<_, _>>()
.map_err(InputValueError::propagate),
_ => Err(InputValueError::expected_type(value)),
}
}
fn to_value(&self) -> Value {
let mut map = IndexMap::new();
for (name, value) in self {
map.insert(
Name::new(name.to_string()),
to_value(value).unwrap_or_default(),
);
}
Value::Object(map)
}
fn as_raw_value(&self) -> Option<&Self::RawValueType> {
Some(self)
}
}
#[async_trait::async_trait]
impl<K, V> OutputType for HashMap<K, V>
where
K: ToString + Eq + Hash + Send + Sync,
V: Serialize + Send + Sync,
{
fn type_name() -> Cow<'static, str> {
<StdHashMap<K, V> as OutputType>::type_name()
}
fn create_type_info(registry: &mut Registry) -> String {
<StdHashMap<K, V> as OutputType>::create_type_info(registry)
}
async fn resolve(
&self,
_ctx: &ContextSelectionSet<'_>,
_field: &Positioned<Field>,
) -> ServerResult<Value> {
let mut map = IndexMap::new();
for (name, value) in self {
map.insert(
Name::new(name.to_string()),
to_value(value).unwrap_or_default(),
);
}
Ok(Value::Object(map))
}
}