208 lines
5.3 KiB
Rust
208 lines
5.3 KiB
Rust
use std::borrow::Cow;
|
|
use std::sync::Arc;
|
|
|
|
use async_graphql_value::ConstValue;
|
|
|
|
use crate::parser::types::Field;
|
|
use crate::registry::{self, Registry};
|
|
use crate::{
|
|
ContainerType, Context, ContextSelectionSet, InputValueError, InputValueResult, Positioned,
|
|
Result, ServerResult, Value,
|
|
};
|
|
|
|
#[doc(hidden)]
|
|
pub trait Description {
|
|
fn description() -> &'static str;
|
|
}
|
|
|
|
/// Represents a GraphQL type.
|
|
///
|
|
/// All GraphQL types implement this trait, such as `Scalar`, `Object`, `Union` ...
|
|
pub trait Type {
|
|
/// Type the name.
|
|
fn type_name() -> Cow<'static, str>;
|
|
|
|
/// Qualified typename.
|
|
fn qualified_type_name() -> String {
|
|
format!("{}!", Self::type_name())
|
|
}
|
|
|
|
/// Introspection type name
|
|
///
|
|
/// Is the return value of field `__typename`, the interface and union should return the current type, and the others return `Type::type_name`.
|
|
fn introspection_type_name(&self) -> Cow<'static, str> {
|
|
Self::type_name()
|
|
}
|
|
|
|
/// Create type information in the registry and return qualified typename.
|
|
fn create_type_info(registry: &mut registry::Registry) -> String;
|
|
}
|
|
|
|
/// Represents a GraphQL input value.
|
|
pub trait InputType: Type + Send + Sync + Sized {
|
|
/// Parse from `Value`. None represents undefined.
|
|
fn parse(value: Option<Value>) -> InputValueResult<Self>;
|
|
|
|
/// Convert to a `Value` for introspection.
|
|
fn to_value(&self) -> Value;
|
|
|
|
/// Get the federation fields, only for InputObject.
|
|
#[doc(hidden)]
|
|
fn federation_fields() -> Option<String> {
|
|
None
|
|
}
|
|
}
|
|
|
|
/// Represents a GraphQL output value.
|
|
#[async_trait::async_trait]
|
|
pub trait OutputType: Type + Send + Sync {
|
|
/// Resolve an output value to `async_graphql::Value`.
|
|
async fn resolve(
|
|
&self,
|
|
ctx: &ContextSelectionSet<'_>,
|
|
field: &Positioned<Field>,
|
|
) -> ServerResult<Value>;
|
|
}
|
|
|
|
impl<T: Type + ?Sized> Type for &T {
|
|
fn type_name() -> Cow<'static, str> {
|
|
T::type_name()
|
|
}
|
|
|
|
fn create_type_info(registry: &mut Registry) -> String {
|
|
T::create_type_info(registry)
|
|
}
|
|
}
|
|
|
|
#[async_trait::async_trait]
|
|
impl<T: OutputType + ?Sized> OutputType for &T {
|
|
#[allow(clippy::trivially_copy_pass_by_ref)]
|
|
async fn resolve(
|
|
&self,
|
|
ctx: &ContextSelectionSet<'_>,
|
|
field: &Positioned<Field>,
|
|
) -> ServerResult<Value> {
|
|
T::resolve(*self, ctx, field).await
|
|
}
|
|
}
|
|
|
|
impl<T: Type> Type for Result<T> {
|
|
fn type_name() -> Cow<'static, str> {
|
|
T::type_name()
|
|
}
|
|
|
|
fn qualified_type_name() -> String {
|
|
T::qualified_type_name()
|
|
}
|
|
|
|
fn create_type_info(registry: &mut registry::Registry) -> String {
|
|
T::create_type_info(registry)
|
|
}
|
|
}
|
|
|
|
#[async_trait::async_trait]
|
|
impl<T: OutputType + Sync> OutputType for Result<T> {
|
|
async fn resolve(
|
|
&self,
|
|
ctx: &ContextSelectionSet<'_>,
|
|
field: &Positioned<Field>,
|
|
) -> ServerResult<Value> {
|
|
match self {
|
|
Ok(value) => Ok(value.resolve(ctx, field).await?),
|
|
Err(err) => Err(err.clone().into_server_error().at(field.pos)),
|
|
}
|
|
}
|
|
}
|
|
|
|
/// A GraphQL object.
|
|
pub trait ObjectType: ContainerType {}
|
|
|
|
#[async_trait::async_trait]
|
|
impl<T: ObjectType> ObjectType for &T {}
|
|
|
|
/// A GraphQL interface.
|
|
pub trait InterfaceType: ContainerType {}
|
|
|
|
/// A GraphQL interface.
|
|
pub trait UnionType: ContainerType {}
|
|
|
|
/// A GraphQL input object.
|
|
pub trait InputObjectType: InputType {}
|
|
|
|
impl<T: Type + ?Sized> Type for Box<T> {
|
|
fn type_name() -> Cow<'static, str> {
|
|
T::type_name()
|
|
}
|
|
|
|
fn create_type_info(registry: &mut Registry) -> String {
|
|
T::create_type_info(registry)
|
|
}
|
|
}
|
|
|
|
#[async_trait::async_trait]
|
|
impl<T: OutputType + ?Sized> OutputType for Box<T> {
|
|
#[allow(clippy::trivially_copy_pass_by_ref)]
|
|
async fn resolve(
|
|
&self,
|
|
ctx: &ContextSelectionSet<'_>,
|
|
field: &Positioned<Field>,
|
|
) -> ServerResult<Value> {
|
|
T::resolve(&**self, ctx, field).await
|
|
}
|
|
}
|
|
|
|
#[async_trait::async_trait]
|
|
impl<T: InputType> InputType for Box<T> {
|
|
fn parse(value: Option<ConstValue>) -> InputValueResult<Self> {
|
|
T::parse(value)
|
|
.map(Box::new)
|
|
.map_err(InputValueError::propagate)
|
|
}
|
|
|
|
fn to_value(&self) -> ConstValue {
|
|
T::to_value(&self)
|
|
}
|
|
}
|
|
|
|
impl<T: Type + ?Sized> Type for Arc<T> {
|
|
fn type_name() -> Cow<'static, str> {
|
|
T::type_name()
|
|
}
|
|
|
|
fn create_type_info(registry: &mut Registry) -> String {
|
|
T::create_type_info(registry)
|
|
}
|
|
}
|
|
|
|
#[async_trait::async_trait]
|
|
impl<T: OutputType + ?Sized> OutputType for Arc<T> {
|
|
#[allow(clippy::trivially_copy_pass_by_ref)]
|
|
async fn resolve(
|
|
&self,
|
|
ctx: &ContextSelectionSet<'_>,
|
|
field: &Positioned<Field>,
|
|
) -> ServerResult<Value> {
|
|
T::resolve(&**self, ctx, field).await
|
|
}
|
|
}
|
|
|
|
impl<T: InputType> InputType for Arc<T> {
|
|
fn parse(value: Option<ConstValue>) -> InputValueResult<Self> {
|
|
T::parse(value)
|
|
.map(Arc::new)
|
|
.map_err(InputValueError::propagate)
|
|
}
|
|
|
|
fn to_value(&self) -> ConstValue {
|
|
T::to_value(&self)
|
|
}
|
|
}
|
|
|
|
#[doc(hidden)]
|
|
#[async_trait::async_trait]
|
|
pub trait ComplexObject {
|
|
fn fields(registry: &mut registry::Registry) -> Vec<(String, registry::MetaField)>;
|
|
|
|
async fn resolve_field(&self, ctx: &Context<'_>) -> ServerResult<Option<Value>>;
|
|
}
|