49 lines
1.9 KiB
Rust
49 lines
1.9 KiB
Rust
//! rust-analyzer is lazy and doesn't compute anything unless asked. This
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//! sometimes is counter productive when, for example, the first goto definition
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//! request takes longer to compute. This modules implemented prepopulation of
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//! various caches, it's not really advanced at the moment.
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use hir::db::DefDatabase;
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use ide_db::base_db::{SourceDatabase, SourceDatabaseExt};
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use rustc_hash::FxHashSet;
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use crate::RootDatabase;
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/// We started indexing a crate.
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#[derive(Debug)]
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pub struct PrimeCachesProgress {
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pub on_crate: String,
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pub n_done: usize,
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pub n_total: usize,
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}
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pub(crate) fn prime_caches(db: &RootDatabase, cb: &(dyn Fn(PrimeCachesProgress) + Sync)) {
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let _p = profile::span("prime_caches");
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let graph = db.crate_graph();
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// We're only interested in the workspace crates and the `ImportMap`s of their direct
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// dependencies, though in practice the latter also compute the `DefMap`s.
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// We don't prime transitive dependencies because they're generally not visible in
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// the current workspace.
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let to_prime: FxHashSet<_> = graph
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.iter()
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.filter(|&id| {
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let file_id = graph[id].root_file_id;
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let root_id = db.file_source_root(file_id);
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!db.source_root(root_id).is_library
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})
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.flat_map(|id| graph[id].dependencies.iter().map(|krate| krate.crate_id))
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.collect();
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// FIXME: This would be easy to parallelize, since it's in the ideal ordering for that.
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// Unfortunately rayon prevents panics from propagation out of a `scope`, which breaks
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// cancellation, so we cannot use rayon.
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let n_total = to_prime.len();
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for (n_done, &crate_id) in to_prime.iter().enumerate() {
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let crate_name = graph[crate_id].display_name.as_deref().unwrap_or_default().to_string();
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cb(PrimeCachesProgress { on_crate: crate_name, n_done, n_total });
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// This also computes the DefMap
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db.import_map(crate_id);
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}
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}
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