Struct HostState

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pub struct HostState { /* private fields */ }

Expand description

Default host state implementation

Provides basic WASI support, users can extend through inheritance or composition

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impl HostState

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pub fn new() -> Result<Self>

Create a new host state with no inherited capabilities

The returned state has no stdio, network, or filesystem access by default. Use HostState::with_wasi or HostState::default if you need to customise WASI capabilities explicitly.

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pub fn with_wasi<F>(f: F) -> Result<Self>
where F: FnOnce(&mut WasiCtxBuilder) -> &mut WasiCtxBuilder,

Create host state with custom WASI configuration

Trait Implementations§

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impl Default for HostState

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fn default() -> Self

Returns the “default value” for a type. Read more

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impl HostStateImpl for HostState

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fn as_any_mut(&mut self) -> &mut dyn Any

Get user-defined state

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impl WasiView for HostState

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fn ctx(&mut self) -> WasiCtxView<'_>

Yields mutable access to the WasiCtx configuration used for this context.

Auto Trait Implementations§

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impl UnsafeUnpin for HostState

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more

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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more

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impl<T, U> Into for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

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