Struct wasm_bindgen::convert::WasmRet

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#[repr(C)]
pub struct WasmRet<T: WasmAbi> { /* private fields */ }
Expand description

A repr(C) struct containing all of the primitives of a WasmAbi type, in order.

This is used as the return type of imported/exported functions. WasmAbi types aren’t guaranteed to be FFI-safe, so we can’t return them directly: instead we return this.

If all but one of the primitives is (), this corresponds to returning the remaining primitive directly, otherwise a return pointer is used.

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impl<T: WasmAbi> WasmRet<T>

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pub fn join(self) -> T

Joins the components of this WasmRet back into the type they represent.

Trait Implementations§

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impl<T: WasmAbi> From<T> for WasmRet<T>

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fn from(value: T) -> Self

Converts to this type from the input type.

Auto Trait Implementations§

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impl<T> Freeze for WasmRet<T>
where <T as WasmAbi>::Prim1: Freeze, <T as WasmAbi>::Prim2: Freeze, <T as WasmAbi>::Prim3: Freeze, <T as WasmAbi>::Prim4: Freeze,

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impl<T> RefUnwindSafe for WasmRet<T>
where <T as WasmAbi>::Prim1: RefUnwindSafe, <T as WasmAbi>::Prim2: RefUnwindSafe, <T as WasmAbi>::Prim3: RefUnwindSafe, <T as WasmAbi>::Prim4: RefUnwindSafe,

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impl<T> Send for WasmRet<T>
where <T as WasmAbi>::Prim1: Send, <T as WasmAbi>::Prim2: Send, <T as WasmAbi>::Prim3: Send, <T as WasmAbi>::Prim4: Send,

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impl<T> Sync for WasmRet<T>
where <T as WasmAbi>::Prim1: Sync, <T as WasmAbi>::Prim2: Sync, <T as WasmAbi>::Prim3: Sync, <T as WasmAbi>::Prim4: Sync,

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impl<T> Unpin for WasmRet<T>
where <T as WasmAbi>::Prim1: Unpin, <T as WasmAbi>::Prim2: Unpin, <T as WasmAbi>::Prim3: Unpin, <T as WasmAbi>::Prim4: Unpin,

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impl<T> UnwindSafe for WasmRet<T>
where <T as WasmAbi>::Prim1: UnwindSafe, <T as WasmAbi>::Prim2: UnwindSafe, <T as WasmAbi>::Prim3: UnwindSafe, <T as WasmAbi>::Prim4: UnwindSafe,

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, U> Into<U> 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, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.