Enum CanonOpt 

pub enum CanonOpt<'a> {
    StringUtf8,
    StringUtf16,
    StringLatin1Utf16,
    Memory(CoreItemRef<'a, memory>),
    Realloc(CoreItemRef<'a, func>),
    PostReturn(CoreItemRef<'a, func>),
    Async,
    Callback(CoreItemRef<'a, func>),
    CoreType(CoreItemRef<'a, type>),
    Gc,
}

Available on crate feature component-model only.

Canonical ABI options.

Variants

StringUtf8

Encode strings as UTF-8.

StringUtf16

Encode strings as UTF-16.

StringLatin1Utf16

Encode strings as “compact UTF-16”.

Memory(CoreItemRef<'a, memory>)

Use the specified memory for canonical ABI memory access.

Realloc(CoreItemRef<'a, func>)

Use the specified reallocation function for memory allocations.

PostReturn(CoreItemRef<'a, func>)

Call the specified function after the lifted function has returned.

Async

Use the async ABI for lifting or lowering.

Callback(CoreItemRef<'a, func>)

Use the specified function to deliver async events to stackless coroutines.

CoreType(CoreItemRef<'a, type>)

Lower this component function into the specified core function type.

Gc

Use the GC variant of the canonical ABI.

Trait Implementations

impl<'a> Debug for CanonOpt<'a>

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

Formats the value using the given formatter.

impl From<&CanonOpt<'_>> for CanonicalOption

fn from(opt: &CanonOpt<'_>) -> Self

Converts to this type from the input type.

impl<'a> Parse<'a> for CanonOpt<'a>

fn parse(parser: Parser<'a>) -> Result<Self>

Attempts to parse Self from parser, returning an error if it could not be parsed.

impl Peek for CanonOpt<'_>

fn peek(cursor: Cursor<'_>) -> Result<bool>

Tests to see whether this token is the first token within the Cursor specified.

fn display() -> &'static str

Returns a human-readable name of this token to display when generating errors about this token missing.

fn peek2(cursor: Cursor<'_>) -> Result<bool>

The same as peek, except it checks the token immediately following the current token.