Derive Macro GraphValue 

#[derive(GraphValue)]
{
    // Attributes available to this derive:
    #[graph]
}

Derive macro for converting between Rust types and Value.

Structs

Structs are converted to Value::Record with field names as keys.

#[derive(GraphValue)]
struct Person {
    name: String,
    age: i64,
}

Enums

Enums are converted to Value::Variant with the variant index as tag.

#[derive(GraphValue)]
enum Shape {
    Circle(f64),           // tag 0, payload = radius
    Rectangle(f64, f64),   // tag 1, payload = tuple(width, height)
    Point,                 // tag 2, no payload
}

Attributes

• #[graph(crate = "path")] - Specify the crate path (default: packr_abi)
• #[graph(rename = "name")] - Use a different name for field/variant
• #[graph(tag = N)] - Use explicit tag number for variant