Enum Touch 

pub enum Touch {
    ComponentRead {
        id: u8,
        type_name: &'static str,
    },
    ComponentWrite {
        id: u8,
        type_name: &'static str,
    },
    Structural {
        op: &'static str,
    },
    Resource {
        type_id: TypeId,
        type_name: &'static str,
        write: bool,
    },
    Blob {
        op: &'static str,
    },
}

What a context accessor touched. Component ids are the registry discriminants; resources and events report their TypeId for the client’s id registry to resolve.

Variants

ComponentRead

A component column was read.

Fields

id: u8

The component’s registry discriminant.

type_name: &'static str

The component type’s name, for the assertion message.

ComponentWrite

A component column was written.

Fields

id: u8

The component’s registry discriminant.

type_name: &'static str

The component type’s name, for the assertion message.

Structural

Structural change (push/insert/remove/despawn/drain): reorders columns and the join index, so it requires exclusive access.

Fields

op: &'static str

The operation that changed structure.

Resource

A resource or event queue was touched.

Fields

type_id: TypeId

The resource type’s id, resolved by the client’s id registry.

type_name: &'static str

The resource type’s name, for the assertion message.

write: bool

true for a write, false for a read.

Blob

Compiled-payload access mutates the blob store’s residency.

Fields

op: &'static str

The operation that touched the blob store.