rquickjs_core/loader/
module_loader.rs

1use crate::{module::ModuleDef, Ctx, Error, Module, Result};
2use alloc::{string::String, vec::Vec};
3use core::fmt::Debug;
4#[cfg(not(feature = "std"))]
5use hashbrown::HashMap;
6#[cfg(feature = "std")]
7use std::collections::HashMap;
8
9use super::Loader;
10
11type LoadFn = for<'js> fn(Ctx<'js>, Vec<u8>) -> Result<Module<'js>>;
12
13/// The builtin native module loader
14///
15/// This loader can be used as the nested backing loader in user-defined loaders.
16#[derive(Debug, Default)]
17pub struct ModuleLoader {
18    modules: HashMap<String, LoadFn>,
19}
20
21impl ModuleLoader {
22    fn load_func<'js, D: ModuleDef>(ctx: Ctx<'js>, name: Vec<u8>) -> Result<Module<'js>> {
23        Module::declare_def::<D, _>(ctx, name)
24    }
25
26    /// Add module
27    pub fn add_module<N: Into<String>, M: ModuleDef>(&mut self, name: N, _module: M) -> &mut Self {
28        self.modules.insert(name.into(), Self::load_func::<M>);
29        self
30    }
31
32    /// Add module
33    #[must_use]
34    pub fn with_module<N: Into<String>, M: ModuleDef>(mut self, name: N, module: M) -> Self {
35        self.add_module(name, module);
36        self
37    }
38}
39
40impl Loader for ModuleLoader {
41    fn load<'js>(
42        &mut self,
43        ctx: &Ctx<'js>,
44        path: &str,
45        _attributes: Option<crate::loader::ImportAttributes<'js>>,
46    ) -> Result<Module<'js>> {
47        let load = self
48            .modules
49            .remove(path)
50            .ok_or_else(|| Error::new_loading(path))?;
51
52        (load)(ctx.clone(), Vec::from(path))
53    }
54}
rquickjs_core/loader/module_loader.rs

rquickjs_core/loader/
module_loader.rs
