Struct ModuleInstance

pub struct ModuleInstance(/* private fields */);

An instanciated WebAssembly module

Backed by an Rc, so cloning is cheap

See https://webassembly.github.io/spec/core/exec/runtime.html#module-instances

Implementations

impl ModuleInstance

pub fn id(&self) -> ModuleInstanceAddr

Get the module instance’s address

pub fn instantiate( store: &mut Store, module: Module, imports: Option<Imports>, ) -> Result<Self>

Instantiate the module in the given store

See https://webassembly.github.io/spec/core/exec/modules.html#exec-instantiation

pub fn export_addr(&self, name: &str) -> Option<ExternVal>

Get a export by name

pub fn exported_func_untyped( &self, store: &Store, name: &str, ) -> Result<FuncHandle>

Get an exported function by name

pub fn exported_func<P, R>( &self, store: &Store, name: &str, ) -> Result<FuncHandleTyped<P, R>>

where P: IntoWasmValueTuple, R: FromWasmValueTuple,

Get a typed exported function by name

pub fn exported_memory<'a>( &self, store: &'a mut Store, name: &str, ) -> Result<MemoryRef<'a>>

Get an exported memory by name

pub fn exported_memory_mut<'a>( &self, store: &'a mut Store, name: &str, ) -> Result<MemoryRefMut<'a>>

Get an exported memory by name

pub fn memory<'a>( &self, store: &'a Store, addr: MemAddr, ) -> Result<MemoryRef<'a>>

Get a memory by address

pub fn memory_mut<'a>( &self, store: &'a mut Store, addr: MemAddr, ) -> Result<MemoryRefMut<'a>>

Get a memory by address (mutable)

pub fn start_func(&self, store: &Store) -> Result<Option<FuncHandle>>

Get the start function of the module

Returns None if the module has no start function If no start function is specified, also checks for a _start function in the exports

See https://webassembly.github.io/spec/core/syntax/modules.html#start-function

pub fn start(&self, store: &mut Store) -> Result<Option<()>>

Invoke the start function of the module

Returns None if the module has no start function

See https://webassembly.github.io/spec/core/syntax/modules.html#syntax-start

Trait Implementations

impl Clone for ModuleInstance

fn clone(&self) -> ModuleInstance

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ModuleInstance

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

Formats the value using the given formatter.