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// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.
use crate::errors::get_error_class_name;
use crate::file_fetcher::FileFetcher;
use crate::npm;
use deno_core::futures;
use deno_core::futures::FutureExt;
use deno_core::ModuleSpecifier;
use deno_graph::source::CacheInfo;
use deno_graph::source::LoadFuture;
use deno_graph::source::LoadResponse;
use deno_graph::source::Loader;
use deno_runtime::permissions::Permissions;
use std::sync::Arc;
mod check;
mod common;
mod disk_cache;
mod emit;
mod incremental;
mod parsed_source;
pub use check::TypeCheckCache;
pub use common::FastInsecureHasher;
pub use disk_cache::DiskCache;
pub use emit::EmitCache;
pub use incremental::IncrementalCache;
pub use parsed_source::ParsedSourceCache;
/// A "wrapper" for the FileFetcher and DiskCache for the Deno CLI that provides
/// a concise interface to the DENO_DIR when building module graphs.
pub struct FetchCacher {
emit_cache: EmitCache,
dynamic_permissions: Permissions,
file_fetcher: Arc<FileFetcher>,
root_permissions: Permissions,
}
impl FetchCacher {
pub fn new(
emit_cache: EmitCache,
file_fetcher: FileFetcher,
root_permissions: Permissions,
dynamic_permissions: Permissions,
) -> Self {
let file_fetcher = Arc::new(file_fetcher);
Self {
emit_cache,
dynamic_permissions,
file_fetcher,
root_permissions,
}
}
}
impl Loader for FetchCacher {
fn get_cache_info(&self, specifier: &ModuleSpecifier) -> Option<CacheInfo> {
if specifier.scheme() == "npm" {
return None;
}
let local = self.file_fetcher.get_local_path(specifier)?;
if local.is_file() {
let emit = self
.emit_cache
.get_emit_filepath(specifier)
.filter(|p| p.is_file());
Some(CacheInfo {
local: Some(local),
emit,
map: None,
})
} else {
None
}
}
fn load(
&mut self,
specifier: &ModuleSpecifier,
is_dynamic: bool,
) -> LoadFuture {
if specifier.scheme() == "npm" {
return Box::pin(futures::future::ready(
match npm::NpmPackageReference::from_specifier(specifier) {
Ok(_) => Ok(Some(deno_graph::source::LoadResponse::External {
specifier: specifier.clone(),
})),
Err(err) => Err(err),
},
));
}
let specifier = specifier.clone();
let mut permissions = if is_dynamic {
self.dynamic_permissions.clone()
} else {
self.root_permissions.clone()
};
let file_fetcher = self.file_fetcher.clone();
async move {
file_fetcher
.fetch(&specifier, &mut permissions)
.await
.map_or_else(
|err| {
if let Some(err) = err.downcast_ref::<std::io::Error>() {
if err.kind() == std::io::ErrorKind::NotFound {
return Ok(None);
}
} else if get_error_class_name(&err) == "NotFound" {
return Ok(None);
}
Err(err)
},
|file| {
Ok(Some(LoadResponse::Module {
specifier: file.specifier,
maybe_headers: file.maybe_headers,
content: file.source,
}))
},
)
}
.boxed()
}
}
|
