Trait ModuleLoader 

pub trait ModuleLoader: Debug {
    // Required method
    fn load(
        &mut self,
        referrer: &Module,
        spec: &str,
        ctx: &Context,
    ) -> Result<Module>;

    // Provided methods
    fn insert(&mut self, name: String, module: Module) { ... }
    fn get(&self, name: &str) -> Option<Module> { ... }
    fn keys(&self) -> Vec<String> { ... }
    fn resolve_referrer(&self, referrer: &Module, spec: &str) -> Result<PathBuf> { ... }
}

Trait that defines the interface for a module loader.

Required Methods

fn load( &mut self, referrer: &Module, spec: &str, ctx: &Context, ) -> Result<Module>

Load a module from a given source.

Provided Methods

fn insert(&mut self, name: String, module: Module)

Insert a module into the loader’s cache if loader handles caching.

This function is a no-op for loaders that do not cache modules.

Arguments

• name - The name of the module to insert into the cache.
• module - The module to insert into the cache.

fn get(&self, name: &str) -> Option<Module>

Get a module from the cache if the loader caches modules.

This function returns None for loaders that do not cache modules.

Arguments

• name - The name of the module to get from the cache.

fn keys(&self) -> Vec<String>

Returns all the keys in the cache.

This function returns an empty vector for loaders that do not cache modules.

Returns

A vector of strings representing the keys in the cache.

fn resolve_referrer(&self, referrer: &Module, spec: &str) -> Result<PathBuf>

Resolves the path of a referenced module based on the referrer module’s path and the provided specification.

Arguments

• referrer - A reference to the Module that provides the context for resolving the path.
• spec - A string slice that represents the specification of the path to resolve.

Returns

A Result<PathBuf>, where the Ok variant contains the resolved path, and the Err variant contains an error if the operation fails (e.g., if the referrer path has no parent).

Panics

This function will panic if the referrer module’s path has no parent directory.

Implementors