Struct FnPtr 

pub struct FnPtr {
    pub index: u32,
    pub module_id: u16,
}

A function pointer in the runtime.

Functions are identified by an index into the global function table. This allows us to represent function pointers without actual raw pointers.

Fields

index: u32

Index into the global function table.

module_id: u16

Module that defines this function (for multi-module support).

Implementations

impl FnPtr

pub fn new(index: u32) -> Self

Create a new function pointer.

pub fn with_module(index: u32, module_id: u16) -> Self

Create a function pointer with module ID.

pub fn null() -> Self

Null/invalid function pointer.

pub fn is_null(&self) -> bool

Check if this is a null pointer.

Trait Implementations

impl Clone for FnPtr

fn clone(&self) -> FnPtr

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FnPtr

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

Formats the value using the given formatter.

impl Display for FnPtr

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

Formats the value using the given formatter.

impl Hash for FnPtr

fn hash<__H: Hasher>(&self, state: &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 PartialEq for FnPtr

fn eq(&self, other: &FnPtr) -> 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 Copy for FnPtr

impl Eq for FnPtr

impl StructuralPartialEq for FnPtr