Enum UnderlyingSourceType 

pub(crate) enum UnderlyingSourceType<'a> {
    Memory(usize),
    Blob(usize),
    FetchResponse,
    Js(UnderlyingSource<DomTypeHolder>),
    Tee(&'a DefaultTeeUnderlyingSource),
    Transfer(&'a MessagePort),
    Transform(&'a TransformStream, Rc<Promise>),
    TeeByte(&'a ByteTeeUnderlyingSource),
}

https://streams.spec.whatwg.org/#underlying-source-api The Js variant corresponds to the JavaScript object representing the underlying source. The other variants are native sources in Rust.

Variants

Memory(usize)

Facilitate partial integration with sources that are currently read into memory.

Blob(usize)

A blob as underlying source, with a known total size.

FetchResponse

A fetch response as underlying source.

Js(UnderlyingSource<DomTypeHolder>)

A struct representing a JS object as underlying source, and the actual JS object for use as thisArg in callbacks.

Tee(&'a DefaultTeeUnderlyingSource)

Tee

Transfer(&'a MessagePort)

Transfer, with the port used in some of the algorithms.

Transform(&'a TransformStream, Rc<Promise>)

A struct representing a JS object as underlying source, and the actual JS object for use as thisArg in callbacks. This is used for the TransformStream API.

TeeByte(&'a ByteTeeUnderlyingSource)

Tee Byte

Implementations

impl UnderlyingSourceType<'_>

pub(crate) fn is_native(&self) -> bool

Is the source backed by a Rust native source?

Trait Implementations

impl From<UnderlyingSourceType<'_>> for UnderlyingSource

fn from(underlying_source_type: UnderlyingSourceType<'_>) -> Self

Converts to this type from the input type.