Enum wast::token::Index

pub enum Index<'a> {
    Num(u32, Span),
    Id(Id<'a>),
}

A reference to another item in a wasm module.

This type is used for items referring to other items (such as call $foo referencing function $foo). References can be either an index (u32) or an Id in the textual format.

The emission phase of a module will ensure that Index::Id is never used and switch them all to Index::Num.

Variants

Num(u32, Span)

A numerical index that this references. The index space this is referencing is implicit based on where this Index is stored.

Id(Id<'a>)

A human-readable identifier this references. Like Num, the namespace this references is based on where this is stored.

Implementations

impl Index<'_>

pub fn span(&self) -> Span

Returns the source location where this Index was defined.

Trait Implementations

impl<'a> Clone for Index<'a>

fn clone(&self) -> Index<'a>

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<'a> Debug for Index<'a>

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

Formats the value using the given formatter.

impl<'a> From<Id<'a>> for Index<'a>

fn from(id: Id<'a>) -> Index<'a>

Converts to this type from the input type.

impl From<Index<'_>> for u32

fn from(i: Index<'_>) -> Self

Converts to this type from the input type.

impl Hash for Index<'_>

fn hash<H: Hasher>(&self, hasher: &mut H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl<'a> Parse<'a> for Index<'a>

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

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

impl PartialEq for Index<'_>

fn eq(&self, other: &Index<'_>) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Peek for Index<'_>

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.

impl<'a> Copy for Index<'a>

impl Eq for Index<'_>