mirror of
https://github.com/denoland/deno
synced 2024-08-28 12:29:31 +00:00
49d82e609f
This implementation heavily depends on there being a lockfile, meaning JSR specifiers will always diagnose as uncached unless it's there. In practice this affects cases where a `deno.json` isn't being used. Our NPM specifier support isn't subject to this. The reason for this is that the version constraint solving code is currently buried in `deno_graph` and not usable from the LSP, so the only way to reuse that logic is the solved-version map in the lockfile's `packages.specifiers`.
121 lines
3.7 KiB
Rust
121 lines
3.7 KiB
Rust
// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
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use crate::args::deno_registry_url;
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use deno_cache_dir::HttpCache;
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use deno_core::parking_lot::Mutex;
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use deno_core::serde_json;
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use deno_core::serde_json::json;
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use deno_core::ModuleSpecifier;
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use deno_graph::packages::JsrPackageVersionInfo;
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use deno_lockfile::Lockfile;
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use deno_semver::jsr::JsrPackageReqReference;
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use deno_semver::package::PackageNv;
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use deno_semver::package::PackageReq;
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use std::borrow::Cow;
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use std::collections::HashMap;
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use std::sync::Arc;
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#[derive(Debug, Default)]
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pub struct JsrResolver {
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nv_by_req: HashMap<PackageReq, PackageNv>,
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/// The `module_graph` field of the version infos should be forcibly absent.
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/// It can be large and we don't want to store it.
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info_by_nv: HashMap<PackageNv, JsrPackageVersionInfo>,
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}
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impl JsrResolver {
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pub fn from_cache_and_lockfile(
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cache: Arc<dyn HttpCache>,
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lockfile: Option<Arc<Mutex<Lockfile>>>,
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) -> Self {
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let mut nv_by_req = HashMap::new();
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let mut info_by_nv = HashMap::new();
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if let Some(lockfile) = lockfile {
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for (req_url, nv_url) in &lockfile.lock().content.packages.specifiers {
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let Some(req) = req_url.strip_prefix("jsr:") else {
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continue;
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};
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let Some(nv) = nv_url.strip_prefix("jsr:") else {
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continue;
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};
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let Ok(req) = PackageReq::from_str(req) else {
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continue;
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};
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let Ok(nv) = PackageNv::from_str(nv) else {
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continue;
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};
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nv_by_req.insert(req, nv);
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}
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}
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for nv in nv_by_req.values() {
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if info_by_nv.contains_key(nv) {
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continue;
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}
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let Ok(meta_url) = deno_registry_url()
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.join(&format!("{}/{}_meta.json", &nv.name, &nv.version))
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else {
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continue;
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};
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let Ok(meta_cache_item_key) = cache.cache_item_key(&meta_url) else {
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continue;
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};
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let Ok(Some(meta_bytes)) = cache.read_file_bytes(&meta_cache_item_key)
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else {
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continue;
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};
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// This is a roundabout way of deserializing `JsrPackageVersionInfo`,
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// because we only want the `exports` field and `module_graph` is large.
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let Ok(info) = serde_json::from_slice::<serde_json::Value>(&meta_bytes)
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else {
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continue;
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};
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let info = JsrPackageVersionInfo {
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exports: json!(info.as_object().and_then(|o| o.get("exports"))),
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module_graph: None,
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};
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info_by_nv.insert(nv.clone(), info);
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}
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Self {
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nv_by_req,
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info_by_nv,
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}
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}
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pub fn jsr_to_registry_url(
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&self,
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specifier: &ModuleSpecifier,
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) -> Option<ModuleSpecifier> {
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let req_ref = JsrPackageReqReference::from_str(specifier.as_str()).ok()?;
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let nv = self.nv_by_req.get(req_ref.req())?;
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let info = self.info_by_nv.get(nv)?;
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let path = info.export(&normalize_export_name(req_ref.sub_path()))?;
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deno_registry_url()
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.join(&format!("{}/{}/{}", &nv.name, &nv.version, &path))
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.ok()
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}
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}
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// TODO(nayeemrmn): This is duplicated from a private function in deno_graph
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// 0.65.1. Make it public or cleanup otherwise.
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fn normalize_export_name(sub_path: Option<&str>) -> Cow<str> {
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let Some(sub_path) = sub_path else {
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return Cow::Borrowed(".");
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};
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if sub_path.is_empty() || matches!(sub_path, "/" | ".") {
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Cow::Borrowed(".")
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} else {
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let sub_path = if sub_path.starts_with('/') {
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Cow::Owned(format!(".{}", sub_path))
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} else if !sub_path.starts_with("./") {
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Cow::Owned(format!("./{}", sub_path))
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} else {
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Cow::Borrowed(sub_path)
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};
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if let Some(prefix) = sub_path.strip_suffix('/') {
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Cow::Owned(prefix.to_string())
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} else {
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sub_path
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}
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}
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}
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