Struct wasm_encoder::ComponentImportSection

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pub struct ComponentImportSection { /* private fields */ }
Expand description

An encoder for the import section of WebAssembly components.

§Example

use wasm_encoder::{Component, ComponentTypeSection, PrimitiveValType, ComponentImportSection, ComponentTypeRef};

let mut types = ComponentTypeSection::new();

// Define a function type of `[string, string] -> string`.
types
  .function()
  .params(
    [
      ("a", PrimitiveValType::String),
      ("b", PrimitiveValType::String)
    ]
  )
  .result(PrimitiveValType::String);

// This imports a function named `f` with the type defined above
let mut imports = ComponentImportSection::new();
imports.import("f", ComponentTypeRef::Func(0));

let mut component = Component::new();
component.section(&types);
component.section(&imports);

let bytes = component.finish();

Implementations§

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impl ComponentImportSection

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pub fn new() -> Self

Create a new component import section encoder.

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pub fn len(&self) -> u32

The number of imports in the section.

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pub fn is_empty(&self) -> bool

Determines if the section is empty.

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pub fn import(&mut self, name: &str, ty: ComponentTypeRef) -> &mut Self

Define an import in the component import section.

Trait Implementations§

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impl Clone for ComponentImportSection

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fn clone(&self) -> ComponentImportSection

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl ComponentSection for ComponentImportSection

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fn id(&self) -> u8

Gets the section identifier for this section.
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fn append_to_component(&self, dst: &mut Vec<u8>)

Appends this section to the specified destination list of bytes.
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impl Debug for ComponentImportSection

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

Formats the value using the given formatter. Read more
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impl Default for ComponentImportSection

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fn default() -> ComponentImportSection

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

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fn encode(&self, sink: &mut Vec<u8>)

Encode the type into the given byte sink.

Auto Trait Implementations§

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> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. 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> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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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.