rquickjs_core/loader/
builtin_loader.rs

1use crate::{loader::Loader, module::Declared, Ctx, Error, Module, Result};
2use alloc::{string::String, vec::Vec};
3#[cfg(not(feature = "std"))]
4use hashbrown::HashMap;
5#[cfg(feature = "std")]
6use std::collections::HashMap;
7
8/// The builtin script module loader
9///
10/// This loader can be used as the nested backing loader in user-defined loaders.
11#[derive(Debug, Default)]
12pub struct BuiltinLoader {
13    modules: HashMap<String, Vec<u8>>,
14}
15
16impl BuiltinLoader {
17    /// Add builtin script module
18    pub fn add_module<N: Into<String>, S: Into<Vec<u8>>>(
19        &mut self,
20        name: N,
21        source: S,
22    ) -> &mut Self {
23        self.modules.insert(name.into(), source.into());
24        self
25    }
26
27    /// Add builtin script module
28    #[must_use]
29    pub fn with_module<N: Into<String>, S: Into<Vec<u8>>>(mut self, name: N, source: S) -> Self {
30        self.add_module(name, source);
31        self
32    }
33}
34
35impl Loader for BuiltinLoader {
36    fn load<'js>(&mut self, ctx: &Ctx<'js>, path: &str) -> Result<Module<'js, Declared>> {
37        match self.modules.remove(path) {
38            Some(source) => Module::declare(ctx.clone(), path, source),
39            _ => Err(Error::new_loading(path)),
40        }
41    }
42}