Enum ExtractionMetadata 

pub enum ExtractionMetadata {
    Target {
        type_id: TypeId,
        offset: usize,
    },
    Nested {
        type_id: TypeId,
        offset: usize,
        nested: &'static [ExtractionMetadata],
    },
}

Metadata describing how to extract types from an entity structure.

Variants

Target

Direct target at a specific offset.

Fields

type_id: TypeId

offset: usize

Nested

Nested extractable type with its own metadata.

Fields

type_id: TypeId

offset: usize

nested: &'static [ExtractionMetadata]

Implementations

impl ExtractionMetadata

pub const fn new<T: 'static>(offset: usize) -> Self

Create metadata for a direct target type.

pub const fn new_nested<T: Extractable>( offset: usize, nested: &'static [ExtractionMetadata], ) -> Self

Create metadata for a nested extractable type.

pub fn flatten(list: &[ExtractionMetadata]) -> HashMap<TypeId, usize>

Flatten nested metadata into a single HashMap of type -> offset mappings.