pub enum ObjectType {
    INTEGER,
    BOOLEAN,
    NULL,
}

pub trait Object {
    fn object_type(&self) -> ObjectType;
    fn inspect(&self) -> String;
}

pub struct Integer {
    pub value: i64,
}

impl Object for Integer {
    fn object_type(&self) -> ObjectType {
        ObjectType::INTEGER
    }

    fn inspect(&self) -> String {
        self.value.to_string()
    }
}

pub struct Boolean {
    pub value: bool,
}

impl Object for Boolean {
    fn object_type(&self) -> ObjectType {
        ObjectType::BOOLEAN
    }

    fn inspect(&self) -> String {
        self.value.to_string()
    }
}

pub struct Null;

impl Object for Null {
    fn object_type(&self) -> ObjectType {
        ObjectType::NULL
    }

    fn inspect(&self) -> String {
        "null".to_string()
    }
}