use super::JsValue;

/// Possible types of values as defined at <https://tc39.es/ecma262/#sec-typeof-operator>.
#[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash)]
pub enum Type {
    Undefined,
    Null,
    Boolean,
    Number,
    String,
    Symbol,
    BigInt,
    Object,
}

impl JsValue {
    /// Get the type of a value
    ///
    /// This is the abstract operation Type(v), as described in
    /// <https://tc39.es/ecma262/multipage/ecmascript-data-types-and-values.html#sec-ecmascript-language-types>.
    ///
    /// Check [JsValue::type_of] if you need to call the `typeof` operator.
    pub fn get_type(&self) -> Type {
        match *self {
            Self::Rational(_) | Self::Integer(_) => Type::Number,
            Self::String(_) => Type::String,
            Self::Boolean(_) => Type::Boolean,
            Self::Symbol(_) => Type::Symbol,
            Self::Null => Type::Null,
            Self::Undefined => Type::Undefined,
            Self::BigInt(_) => Type::BigInt,
            Self::Object(_) => Type::Object,
        }
    }
}