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a635c9700c
Just some watcher init step that I thought would be "cloned over" but needs to be done again on reset.
157 lines
4.1 KiB
Rust
157 lines
4.1 KiB
Rust
// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
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use crate::errors::get_error_class_name;
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use crate::file_fetcher::FileFetcher;
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use crate::npm;
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use deno_core::futures;
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use deno_core::futures::FutureExt;
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use deno_core::ModuleSpecifier;
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use deno_graph::source::CacheInfo;
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use deno_graph::source::LoadFuture;
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use deno_graph::source::LoadResponse;
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use deno_graph::source::Loader;
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use deno_runtime::permissions::PermissionsContainer;
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use std::sync::Arc;
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mod check;
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mod common;
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mod deno_dir;
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mod disk_cache;
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mod emit;
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mod http_cache;
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mod incremental;
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mod node;
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mod parsed_source;
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pub use check::TypeCheckCache;
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pub use common::FastInsecureHasher;
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pub use deno_dir::DenoDir;
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pub use disk_cache::DiskCache;
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pub use emit::EmitCache;
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pub use http_cache::CachedUrlMetadata;
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pub use http_cache::HttpCache;
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pub use incremental::IncrementalCache;
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pub use node::NodeAnalysisCache;
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pub use parsed_source::ParsedSourceCache;
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/// Permissions used to save a file in the disk caches.
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pub const CACHE_PERM: u32 = 0o644;
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/// A "wrapper" for the FileFetcher and DiskCache for the Deno CLI that provides
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/// a concise interface to the DENO_DIR when building module graphs.
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pub struct FetchCacher {
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emit_cache: EmitCache,
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dynamic_permissions: PermissionsContainer,
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file_fetcher: Arc<FileFetcher>,
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root_permissions: PermissionsContainer,
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}
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impl FetchCacher {
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pub fn new(
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emit_cache: EmitCache,
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file_fetcher: Arc<FileFetcher>,
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root_permissions: PermissionsContainer,
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dynamic_permissions: PermissionsContainer,
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) -> Self {
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Self {
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emit_cache,
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dynamic_permissions,
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file_fetcher,
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root_permissions,
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}
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}
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}
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impl Loader for FetchCacher {
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fn get_cache_info(&self, specifier: &ModuleSpecifier) -> Option<CacheInfo> {
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if matches!(specifier.scheme(), "npm" | "node") {
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return None;
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}
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let local = self.file_fetcher.get_local_path(specifier)?;
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if local.is_file() {
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let emit = self
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.emit_cache
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.get_emit_filepath(specifier)
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.filter(|p| p.is_file());
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Some(CacheInfo {
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local: Some(local),
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emit,
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map: None,
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})
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} else {
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None
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}
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}
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fn load(
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&mut self,
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specifier: &ModuleSpecifier,
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is_dynamic: bool,
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) -> LoadFuture {
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if specifier.scheme() == "npm" {
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return Box::pin(futures::future::ready(
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match npm::NpmPackageReference::from_specifier(specifier) {
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Ok(_) => Ok(Some(deno_graph::source::LoadResponse::External {
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specifier: specifier.clone(),
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})),
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Err(err) => Err(err),
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},
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));
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}
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let specifier =
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if let Some(module_name) = specifier.as_str().strip_prefix("node:") {
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if module_name == "module" {
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// the source code for "node:module" is built-in rather than
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// being from deno_std like the other modules
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return Box::pin(futures::future::ready(Ok(Some(
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deno_graph::source::LoadResponse::External {
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specifier: specifier.clone(),
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},
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))));
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}
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match crate::node::resolve_builtin_node_module(module_name) {
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Ok(specifier) => specifier,
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Err(err) => return Box::pin(futures::future::ready(Err(err))),
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}
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} else {
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specifier.clone()
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};
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let permissions = if is_dynamic {
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self.dynamic_permissions.clone()
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} else {
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self.root_permissions.clone()
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};
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let file_fetcher = self.file_fetcher.clone();
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async move {
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file_fetcher
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.fetch(&specifier, permissions)
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.await
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.map_or_else(
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|err| {
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if let Some(err) = err.downcast_ref::<std::io::Error>() {
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if err.kind() == std::io::ErrorKind::NotFound {
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return Ok(None);
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}
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} else if get_error_class_name(&err) == "NotFound" {
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return Ok(None);
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}
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Err(err)
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},
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|file| {
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Ok(Some(LoadResponse::Module {
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specifier: file.specifier,
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maybe_headers: file.maybe_headers,
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content: file.source,
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}))
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},
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)
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}
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.boxed()
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}
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}
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