Trait VdirCoroutine 

pub trait VdirCoroutine {
    type Yield;
    type Return;

    // Required method
    fn resume(
        &mut self,
        arg: Option<VdirReply>,
    ) -> VdirCoroutineState<Self::Yield, Self::Return>;
}

Standard-shape Vdir coroutine.

Implementors own their internal state machine and declare their per-step Yield plus a terminal Return. The driver reacts to each Yield variant and resumes until Complete.

Required Associated Types

type Yield

Intermediate value handed back on every step. Per-coroutine: each implementor picks exactly the variants it needs. In io-vdir every coroutine picks VdirYield.

type Return

Terminal value. By convention Result<Output, Error>; the “ok” arm carries the operation’s final output, the “error” arm carries the cause.

Required Methods

fn resume( &mut self, arg: Option<VdirReply>, ) -> VdirCoroutineState<Self::Yield, Self::Return>

Advances the coroutine one step.

Pass None on the initial call. Pass Some(arg) carrying the value matching the previous Yielded variant.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors

impl VdirCoroutine for VdirCollectionCreate

type Yield = VdirYield

type Return = Result<(), VdirCollectionCreateError>

impl VdirCoroutine for VdirCollectionDelete

type Yield = VdirYield

type Return = Result<(), VdirCollectionDeleteError>

impl VdirCoroutine for VdirCollectionList

type Yield = VdirYield

type Return = Result<BTreeSet<VdirCollection>, VdirCollectionListError>

impl VdirCoroutine for VdirCollectionRename

type Yield = VdirYield

type Return = Result<(), VdirCollectionRenameError>

impl VdirCoroutine for VdirCollectionUpdate

type Yield = VdirYield

type Return = Result<(), VdirCollectionUpdateError>

impl VdirCoroutine for VdirItemCopy

type Yield = VdirYield

type Return = Result<(), VdirItemCopyError>

impl VdirCoroutine for VdirItemDelete

type Yield = VdirYield

type Return = Result<(), VdirItemDeleteError>

impl VdirCoroutine for VdirItemGet

type Yield = VdirYield

type Return = Result<VdirItem, VdirItemGetError>

impl VdirCoroutine for VdirItemList

type Yield = VdirYield

type Return = Result<BTreeSet<VdirItem>, VdirItemListError>

impl VdirCoroutine for VdirItemLocate

type Yield = VdirYield

type Return = Result<VdirItemLocateOutput, VdirItemLocateError>

impl VdirCoroutine for VdirItemMove

type Yield = VdirYield

type Return = Result<(), VdirItemMoveError>

impl VdirCoroutine for VdirItemStore

type Yield = VdirYield

type Return = Result<VdirItemStoreOutput, VdirItemStoreError>