Struct WebAssetLoader 

pub struct WebAssetLoader { /* private fields */ }

In-memory asset loader for the web target.

All loaded bytes live in a Mutex<HashMap> so the loader can satisfy the AssetLoader: Send + Sync bound. Lookups are cheap (single hash + clone of the byte vector). The cache is unbounded — preloaded assets stay resident for the lifetime of the loader.

Implementations

impl WebAssetLoader

pub fn new() -> Self

Create an empty loader. Use preload to fill it before any synchronous load() call.

pub fn insert_raw(&self, key: impl Into<String>, bytes: Vec<u8>)

Insert raw bytes for key directly into the cache. Useful when the app already has asset bytes in hand (e.g. via include_bytes! for tiny bundled fonts) and doesn’t need a fetch() round-trip.

pub fn len(&self) -> usize

Number of entries currently in the cache.

pub fn is_empty(&self) -> bool

Whether the cache is empty.

pub async fn preload(&self, _urls: &[&str]) -> Result<()>

Cross-host placeholder for preload. See the wasm32 variant for the real implementation.

pub async fn fetch_bytes(_url: &str) -> Result<Vec<u8>>

Cross-host placeholder for fetch_bytes. Returns PlatformError::Unsupported because there is no fetch() API outside a browser. The non-wasm32 path exists so downstream cargo check from a desktop box doesn’t error on the missing item.

Trait Implementations

impl AssetLoader for WebAssetLoader

fn load(&self, path: &AssetPath) -> Result<Vec<u8>>

Load an asset as raw bytes

fn exists(&self, path: &AssetPath) -> bool

Check if an asset exists

fn platform_name(&self) -> &'static str

Get the platform name for this loader

fn load_string(&self, path: &AssetPath) -> Result<String, PlatformError>

Load an asset as a UTF-8 string

impl Debug for WebAssetLoader

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

Formats the value using the given formatter.

impl Default for WebAssetLoader

fn default() -> WebAssetLoader

Returns the “default value” for a type.