sprite-core 0.1.0

/// A message sent between actors.
#[derive(Debug, Clone, PartialEq)]
pub struct Message {
    pub from: u64,
    pub payload: Payload,
}

/// The payload of a message.
#[derive(Debug, Clone, PartialEq)]
pub enum Payload {
    Text(String),
    Int(i64),
    Float(f64),
    Bool(bool),
    Bytes(Vec<u8>),
    Nil,
}

impl Message {
    pub fn text(s: impl Into<String>) -> Self {
        Self { from: 0, payload: Payload::Text(s.into()) }
    }
    pub fn int(i: i64) -> Self {
        Self { from: 0, payload: Payload::Int(i) }
    }
    pub fn float(f: f64) -> Self {
        Self { from: 0, payload: Payload::Float(f) }
    }
    pub fn bool(b: bool) -> Self {
        Self { from: 0, payload: Payload::Bool(b) }
    }
    pub fn bytes(b: impl Into<Vec<u8>>) -> Self {
        Self { from: 0, payload: Payload::Bytes(b.into()) }
    }
    pub fn nil() -> Self {
        Self { from: 0, payload: Payload::Nil }
    }
    pub fn payload(&self) -> &Payload {
        &self.payload
    }
    pub fn as_str(&self) -> Option<&str> {
        match &self.payload { Payload::Text(s) => Some(s), _ => None }
    }
    pub fn as_i64(&self) -> Option<i64> {
        match &self.payload { Payload::Int(i) => Some(*i), _ => None }
    }
    pub fn as_f64(&self) -> Option<f64> {
        match &self.payload { Payload::Float(f) => Some(*f), _ => None }
    }
    pub fn as_bool(&self) -> Option<bool> {
        match &self.payload { Payload::Bool(b) => Some(*b), _ => None }
    }
}

impl PartialEq<&str> for Message {
    fn eq(&self, other: &&str) -> bool {
        matches!(&self.payload, Payload::Text(s) if s == *other)
    }
}

#[cfg(test)]
mod tests {
    use super::*;
    #[test]
    fn constructors() {
        assert_eq!(Message::text("hi").as_str(), Some("hi"));
        assert_eq!(Message::int(42).as_i64(), Some(42));
        assert_eq!(Message::float(3.14).as_f64(), Some(3.14));
        assert_eq!(Message::bool(true).as_bool(), Some(true));
        assert!(Message::nil().payload() == &Payload::Nil);
    }
    #[test]
    fn str_equality() {
        assert!(Message::text("ping") == "ping");
        assert!(Message::text("ping") != "pong");
    }
}