zen_expression/variable/
ser.rs

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use crate::variable::Variable;
use rust_decimal::prelude::ToPrimitive;
use serde::ser::SerializeStruct;
use serde::{Serialize, Serializer};

impl Serialize for Variable {
    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
    where
        S: Serializer,
    {
        match self {
            Variable::Null => serializer.serialize_unit(),
            Variable::Bool(v) => serializer.serialize_bool(*v),
            Variable::Number(v) => {
                if let Some(float) = v.to_f64() {
                    return serializer.serialize_f64(float);
                }

                if let Some(integer) = v.to_i128() {
                    return serializer.serialize_i128(integer);
                }

                let str = v.to_string();

                let mut s = serializer.serialize_struct("$serde_json::private::Number", 1)?;
                s.serialize_field("$serde_json::private::Number", &str)?;
                s.end()
            }
            Variable::String(v) => serializer.serialize_str(v),
            Variable::Array(v) => {
                let borrowed = v.borrow();
                serializer.collect_seq(borrowed.iter())
            }
            Variable::Object(v) => {
                let borrowed = v.borrow();
                serializer.collect_map(borrowed.iter())
            }
        }
    }
}