67 lines
1.6 KiB
Rust
67 lines
1.6 KiB
Rust
use crate::{registry, ContextSelectionSet, Result};
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use graphql_parser::query::Value;
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use std::borrow::Cow;
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#[doc(hidden)]
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pub trait GQLType {
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fn type_name() -> Cow<'static, str>;
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fn qualified_type_name() -> String {
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format!("{}!", Self::type_name())
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}
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fn create_type_info(registry: &mut registry::Registry) -> String;
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}
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#[doc(hidden)]
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pub trait GQLInputValue: GQLType + Sized {
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fn parse(value: &Value) -> Option<Self>;
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}
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#[doc(hidden)]
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#[async_trait::async_trait]
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pub trait GQLOutputValue: GQLType {
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async fn resolve(&self, ctx: &ContextSelectionSet<'_>) -> Result<serde_json::Value>;
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}
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#[doc(hidden)]
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pub trait GQLObject: GQLOutputValue {}
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#[doc(hidden)]
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pub trait GQLInputObject: GQLInputValue {}
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pub trait Scalar: Sized + Send {
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fn type_name() -> &'static str;
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fn description() -> Option<&'static str> {
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None
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}
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fn parse(value: &Value) -> Option<Self>;
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fn to_json(&self) -> Result<serde_json::Value>;
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}
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impl<T: Scalar> GQLType for T {
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fn type_name() -> Cow<'static, str> {
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Cow::Borrowed(T::type_name())
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}
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fn create_type_info(registry: &mut registry::Registry) -> String {
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registry.create_type(&T::type_name(), |_| registry::Type::Scalar {
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name: T::type_name().to_string(),
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description: T::description(),
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})
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}
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}
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impl<T: Scalar> GQLInputValue for T {
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fn parse(value: &Value) -> Option<Self> {
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T::parse(value)
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}
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}
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#[async_trait::async_trait]
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impl<T: Scalar + Sync> GQLOutputValue for T {
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async fn resolve(&self, _: &ContextSelectionSet<'_>) -> Result<serde_json::Value> {
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T::to_json(self)
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}
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}
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