Trait ComponentType

pub unsafe trait ComponentType { }

Available on crate features runtime and component-model only.

A trait representing types which can be passed to and read from components with the canonical ABI.

This trait is implemented for Rust types which can be communicated to components. The Func::typed and TypedFunc Rust items are the main consumers of this trait.

Supported Rust types include:

Component Model Type	Rust Type
{s,u}{8,16,32,64}	{i,u}{8,16,32,64}
f{32,64}	f{32,64}
bool	bool
char	char
tuple<A, B>	(A, B)
option<T>	Option<T>
result	Result<(), ()>
result<T>	Result<T, ()>
result<_, E>	Result<(), E>
result<T, E>	Result<T, E>
string	String, &str, or WasmStr
list<T>	Vec<T>, &[T], or WasmList
own<T>, borrow<T>	Resource<T> or ResourceAny
record	#[derive(ComponentType)]
variant	#[derive(ComponentType)]
enum	#[derive(ComponentType)]
flags	flags!

Rust standard library pointers such as &T, Box<T>, Rc<T>, and Arc<T> additionally represent whatever type T represents in the component model. Note that types such as record, variant, enum, and flags are generated by the embedder at compile time. These macros derive implementation of this trait for custom types to map to custom types in the component model. Note that for record, variant, enum, and flags those types are often generated by the bindgen! macro from WIT definitions.

Types that implement ComponentType are used for Params and Return in TypedFunc and Func::typed.

The contents of this trait are hidden as it’s intended to be an implementation detail of Wasmtime. The contents of this trait are not covered by Wasmtime’s stability guarantees.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types

impl ComponentType for bool

impl ComponentType for char

impl ComponentType for f32

impl ComponentType for f64

impl ComponentType for i8

impl ComponentType for i16

impl ComponentType for i32

impl ComponentType for i64

impl ComponentType for str

impl ComponentType for u8

impl ComponentType for u16

impl ComponentType for u32

impl ComponentType for u64

impl ComponentType for ()

impl ComponentType for String

impl<A1> ComponentType for (A1,)

where A1: ComponentType,

impl<A1, A2> ComponentType for (A1, A2)

where A1: ComponentType, A2: ComponentType,

impl<A1, A2, A3> ComponentType for (A1, A2, A3)

where A1: ComponentType, A2: ComponentType, A3: ComponentType,

impl<A1, A2, A3, A4> ComponentType for (A1, A2, A3, A4)

where A1: ComponentType, A2: ComponentType, A3: ComponentType, A4: ComponentType,

impl<A1, A2, A3, A4, A5> ComponentType for (A1, A2, A3, A4, A5)

where A1: ComponentType, A2: ComponentType, A3: ComponentType, A4: ComponentType, A5: ComponentType,

impl<A1, A2, A3, A4, A5, A6> ComponentType for (A1, A2, A3, A4, A5, A6)

where A1: ComponentType, A2: ComponentType, A3: ComponentType, A4: ComponentType, A5: ComponentType, A6: ComponentType,

impl<A1, A2, A3, A4, A5, A6, A7> ComponentType for (A1, A2, A3, A4, A5, A6, A7)

where A1: ComponentType, A2: ComponentType, A3: ComponentType, A4: ComponentType, A5: ComponentType, A6: ComponentType, A7: ComponentType,

impl<A1, A2, A3, A4, A5, A6, A7, A8> ComponentType for (A1, A2, A3, A4, A5, A6, A7, A8)

where A1: ComponentType, A2: ComponentType, A3: ComponentType, A4: ComponentType, A5: ComponentType, A6: ComponentType, A7: ComponentType, A8: ComponentType,

impl<A1, A2, A3, A4, A5, A6, A7, A8, A9> ComponentType for (A1, A2, A3, A4, A5, A6, A7, A8, A9)

where A1: ComponentType, A2: ComponentType, A3: ComponentType, A4: ComponentType, A5: ComponentType, A6: ComponentType, A7: ComponentType, A8: ComponentType, A9: ComponentType,

impl<A1, A2, A3, A4, A5, A6, A7, A8, A9, A10> ComponentType for (A1, A2, A3, A4, A5, A6, A7, A8, A9, A10)

where A1: ComponentType, A2: ComponentType, A3: ComponentType, A4: ComponentType, A5: ComponentType, A6: ComponentType, A7: ComponentType, A8: ComponentType, A9: ComponentType, A10: ComponentType,

impl<A1, A2, A3, A4, A5, A6, A7, A8, A9, A10, A11> ComponentType for (A1, A2, A3, A4, A5, A6, A7, A8, A9, A10, A11)

where A1: ComponentType, A2: ComponentType, A3: ComponentType, A4: ComponentType, A5: ComponentType, A6: ComponentType, A7: ComponentType, A8: ComponentType, A9: ComponentType, A10: ComponentType, A11: ComponentType,

impl<A1, A2, A3, A4, A5, A6, A7, A8, A9, A10, A11, A12> ComponentType for (A1, A2, A3, A4, A5, A6, A7, A8, A9, A10, A11, A12)

where A1: ComponentType, A2: ComponentType, A3: ComponentType, A4: ComponentType, A5: ComponentType, A6: ComponentType, A7: ComponentType, A8: ComponentType, A9: ComponentType, A10: ComponentType, A11: ComponentType, A12: ComponentType,

impl<A1, A2, A3, A4, A5, A6, A7, A8, A9, A10, A11, A12, A13> ComponentType for (A1, A2, A3, A4, A5, A6, A7, A8, A9, A10, A11, A12, A13)

where A1: ComponentType, A2: ComponentType, A3: ComponentType, A4: ComponentType, A5: ComponentType, A6: ComponentType, A7: ComponentType, A8: ComponentType, A9: ComponentType, A10: ComponentType, A11: ComponentType, A12: ComponentType, A13: ComponentType,

impl<A1, A2, A3, A4, A5, A6, A7, A8, A9, A10, A11, A12, A13, A14> ComponentType for (A1, A2, A3, A4, A5, A6, A7, A8, A9, A10, A11, A12, A13, A14)

where A1: ComponentType, A2: ComponentType, A3: ComponentType, A4: ComponentType, A5: ComponentType, A6: ComponentType, A7: ComponentType, A8: ComponentType, A9: ComponentType, A10: ComponentType, A11: ComponentType, A12: ComponentType, A13: ComponentType, A14: ComponentType,

impl<A1, A2, A3, A4, A5, A6, A7, A8, A9, A10, A11, A12, A13, A14, A15> ComponentType for (A1, A2, A3, A4, A5, A6, A7, A8, A9, A10, A11, A12, A13, A14, A15)

where A1: ComponentType, A2: ComponentType, A3: ComponentType, A4: ComponentType, A5: ComponentType, A6: ComponentType, A7: ComponentType, A8: ComponentType, A9: ComponentType, A10: ComponentType, A11: ComponentType, A12: ComponentType, A13: ComponentType, A14: ComponentType, A15: ComponentType,

impl<A1, A2, A3, A4, A5, A6, A7, A8, A9, A10, A11, A12, A13, A14, A15, A16> ComponentType for (A1, A2, A3, A4, A5, A6, A7, A8, A9, A10, A11, A12, A13, A14, A15, A16)

where A1: ComponentType, A2: ComponentType, A3: ComponentType, A4: ComponentType, A5: ComponentType, A6: ComponentType, A7: ComponentType, A8: ComponentType, A9: ComponentType, A10: ComponentType, A11: ComponentType, A12: ComponentType, A13: ComponentType, A14: ComponentType, A15: ComponentType, A16: ComponentType,

impl<A1, A2, A3, A4, A5, A6, A7, A8, A9, A10, A11, A12, A13, A14, A15, A16, A17> ComponentType for (A1, A2, A3, A4, A5, A6, A7, A8, A9, A10, A11, A12, A13, A14, A15, A16, A17)

where A1: ComponentType, A2: ComponentType, A3: ComponentType, A4: ComponentType, A5: ComponentType, A6: ComponentType, A7: ComponentType, A8: ComponentType, A9: ComponentType, A10: ComponentType, A11: ComponentType, A12: ComponentType, A13: ComponentType, A14: ComponentType, A15: ComponentType, A16: ComponentType, A17: ComponentType,

impl<T> ComponentType for Option<T>

where T: ComponentType,

impl<T> ComponentType for [T]

where T: ComponentType,

impl<T, E> ComponentType for Result<T, E>

where T: ComponentType, E: ComponentType,

impl<T: ComponentType + ?Sized> ComponentType for &T

impl<T: ComponentType + ?Sized> ComponentType for Box<T>

impl<T: ComponentType + ?Sized> ComponentType for Rc<T>

impl<T: ComponentType + ?Sized> ComponentType for Arc<T>

impl<T: ComponentType> ComponentType for Vec<T>

Implementors

impl ComponentType for wasmtime::component::bindgen_examples::_3_interface_imports::example::interface_imports::logging::Level

Available on docsrs only.

impl ComponentType for wasmtime::component::bindgen_examples::_4_imported_resources::example::imported_resources::logging::Level

Available on docsrs only.

impl ComponentType for wasmtime::component::bindgen_examples::_6_exported_resources::exports::example::exported_resources::logging::Level

Available on docsrs only.

impl ComponentType for ResourceAny

impl ComponentType for WasmStr

impl<T: 'static> ComponentType for Resource<T>

impl<T: ComponentType> ComponentType for WasmList<T>