Enum InstanceRequest

pub enum InstanceRequest {
    AddLine {
        line: [Point; 2],
        responder: InstanceAddLineResponder,
    },
    _UnknownMethod {
        ordinal: u64,
        control_handle: InstanceControlHandle,
        method_type: MethodType,
    },
}

Manages a single instance of a canvas. Each session of this protocol is responsible for a new canvas.

Variants

AddLine

Add a line to the canvas.

This method can be considered an improvement over the one-way case from a flow control perspective, as it is now much more difficult for a well-behaved client to “get ahead” of the server and overwhelm. This is because the client now waits for each request to be acked by the server before proceeding. This change represents a trade-off: we get much greater synchronization of message flow between the client and the server, at the cost of worse performance at the limit due to the extra wait imposed by each ack.

Fields

line: [Point; 2]

responder: InstanceAddLineResponder

_UnknownMethod

An interaction was received which does not match any known method.

Fields

Non-exhaustive enum variants could have additional fields added in future. Therefore, non-exhaustive enum variants cannot be constructed in external crates and cannot be matched against.

ordinal: u64

Ordinal of the method that was called.

control_handle: InstanceControlHandle

method_type: MethodType

Implementations

impl InstanceRequest

pub fn into_add_line(self) -> Option<([Point; 2], InstanceAddLineResponder)>

pub fn method_name(&self) -> &'static str

Name of the method defined in FIDL

Trait Implementations

impl Debug for InstanceRequest

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.