2020-04-27 09:58:10 +00:00
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use crate::{Result, ScalarType, Value};
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use async_graphql_derive::Scalar;
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2020-05-07 10:49:09 +00:00
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use serde::de::DeserializeOwned;
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2020-04-09 14:03:09 +00:00
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/// Any scalar
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///
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/// The `Any` scalar is used to pass representations of entities from external services into the root `_entities` field for execution.
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#[derive(Clone, PartialEq, Debug)]
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pub struct Any(pub Value);
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2020-04-27 09:58:10 +00:00
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#[Scalar(internal)]
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impl ScalarType for Any {
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2020-04-09 14:03:09 +00:00
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fn type_name() -> &'static str {
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"_Any"
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}
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fn description() -> Option<&'static str> {
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Some("The `_Any` scalar is used to pass representations of entities from external services into the root `_entities` field for execution.")
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}
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fn parse(value: &Value) -> Option<Self> {
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Some(Self(value.clone()))
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}
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fn is_valid(_value: &Value) -> bool {
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true
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}
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fn to_json(&self) -> Result<serde_json::Value> {
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2020-05-09 14:16:39 +00:00
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Ok(self.0.clone().into())
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2020-04-09 14:03:09 +00:00
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}
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}
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2020-05-07 10:49:09 +00:00
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impl Any {
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/// Parse this `Any` value to T by `serde_json`.
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2020-05-07 10:50:47 +00:00
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pub fn parse_value<T: DeserializeOwned>(&self) -> std::result::Result<T, serde_json::Error> {
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2020-05-07 10:49:09 +00:00
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serde_json::from_value(self.to_json().unwrap())
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}
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}
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2020-04-29 10:36:13 +00:00
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impl<T> From<T> for Any
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where
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T: Into<Value>,
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{
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fn from(value: T) -> Any {
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Any(value.into())
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}
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}
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#[cfg(test)]
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mod test {
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use super::*;
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#[test]
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fn test_conversion_ok() {
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let value = Value::List(vec![Value::Int(1.into()), Value::Float(2.0), Value::Null]);
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let expected = Any(value.clone());
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let output: Any = value.into();
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assert_eq!(output, expected);
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}
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}
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