async-graphql/src/scalars/bool.rs

use crate::{Result, Scalar, Value};

impl Scalar for bool {
    fn type_name() -> &'static str {
        "Boolean"
    }

    fn description() -> Option<&'static str> {
        Some("The `Boolean` scalar type represents `true` or `false`.")
    }

    fn parse(value: &Value) -> Option<Self> {
        match value {
            Value::Boolean(n) => Some(*n),
            _ => None,
        }
    }

    fn parse_from_json(value: &serde_json::Value) -> Option<Self> {
        match value {
            serde_json::Value::Bool(n) => Some(*n),
            _ => None,
        }
    }

    fn to_json(&self) -> Result<serde_json::Value> {
        Ok((*self).into())
    }
}