Struct Env

pub struct Env {
    pub imports: Imports,
    pub exports: Exports,
    pub slots: Slots,
    pub funcs: Funcs,
    pub data: Data,
    pub index: Option<u32>,
}

A struct that holds the environment wasm module.

Fields

imports: Imports

WASM imports

exports: Exports

WASM exports

slots: Slots

Function memory slots

funcs: Funcs

Function params count

data: Data

WASM data slots

index: Option<u32>

Current function index

Implementations

impl Env

pub fn load_abis(&self, funs: &Functions<'_>) -> Result<Vec<Abi>>

Load abis from functions

pub fn load_abi(&self, fun: &Function<'_>) -> Result<Abi>

Load abi from function

pub fn query_func(&self, name: &str) -> Result<u32>

Query exported function from selector.

pub fn is_external(&self, index: u32) -> bool

Check if the input function is external function

pub fn is_main(&self, index: u32) -> bool

If the present function index is the main function

NOTE: in wasm the indexes of the imports will be ordered before the functions

pub fn with_index(&self, index: u32) -> Self

Clone a new environment with function index provided

pub fn reserved(&self) -> u32

Get reserved slots

pub fn alloc(&self, index: u32) -> SmallVec<[u8; 4]>

Allocate memory slots from local index

Trait Implementations

impl Clone for Env

fn clone(&self) -> Env

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Env

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

Formats the value using the given formatter.

impl Default for Env

fn default() -> Env

Returns the “default value” for a type.