Struct Module

pub struct Module { /* private fields */ }

Defines compiled in-memory representation of an input WASM binary.

A Module is a compiled in-memory representation of an input WebAssembly binary. In the instantiation process, a Module is instatiated to a module instance, from which the exported function, table, memory, and global instances can be fetched.

Implementations

impl Module

pub fn from_file( config: Option<&Config>, file: impl AsRef<Path>, ) -> WasmEdgeResult<Self>

Returns a validated module from a file.

Arguments

• config - The global configuration.

• file - A wasm file or an AOT wasm file.

Error

If fail to load and valiate a module from a file, returns an error.

pub fn from_bytes( config: Option<&Config>, bytes: impl AsRef<[u8]>, ) -> WasmEdgeResult<Self>

Loads a WebAssembly binary module from in-memory bytes.

Arguments

• config - The global configuration.

• bytes - The in-memory bytes to be parsed.

Error

If fail to load and valiate the WebAssembly module from the given in-memory bytes, returns an error.

pub fn count_of_imports(&self) -> u32

Returns the count of the imported WasmEdge instances in the module.

pub fn imports(&self) -> Vec<ImportType<'_>>

Returns the import types of all imported WasmEdge instances in the module.

pub fn count_of_exports(&self) -> u32

Returns the count of the exported WasmEdge instances from the module.

pub fn exports(&self) -> Vec<ExportType<'_>>

Returns the export types of all exported WasmEdge instances (including funcs, tables, globals and memories) from the module.

pub fn get_export(&self, name: impl AsRef<str>) -> Option<ExternalInstanceType>

Gets the export type by the name of a specific exported WasmEdge instance, such as func, table, global or memory instance.

Argument

• name - The name of the target exported WasmEdge instance, such as func, table, global or memory instance.

Trait Implementations

impl Clone for Module

fn clone(&self) -> Module

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Module

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

Formats the value using the given formatter.