getPackage type checks one [Package] in the batch.
(ctx context.Context, ph *packageHandle)
| 365 | |
| 366 | // getPackage type checks one [Package] in the batch. |
| 367 | func (b *typeCheckBatch) getPackage(ctx context.Context, ph *packageHandle) (*Package, error) { |
| 368 | return b.syntaxPackages.get(ctx, ph.mp.ID, func(ctx context.Context) (*Package, error) { |
| 369 | // Wait for predecessors. |
| 370 | // Record imports of this package to avoid redundant work in typesConfig. |
| 371 | imports := make(map[PackagePath]*types.Package) |
| 372 | fset := b.fset |
| 373 | if ph.state >= validImports { |
| 374 | for _, imp := range ph.pkgData.imports { |
| 375 | imports[PackagePath(imp.Path())] = imp |
| 376 | } |
| 377 | // Reusing imports requires that their positions are mapped by the FileSet. |
| 378 | fset = tokeninternal.CloneFileSet(ph.pkgData.fset) |
| 379 | } else { |
| 380 | var impMu sync.Mutex |
| 381 | var g errgroup.Group |
| 382 | for depPath, depID := range ph.mp.DepsByPkgPath { |
| 383 | g.Go(func() error { |
| 384 | imp, err := b.getImportPackage(ctx, depID) |
| 385 | if err == nil { |
| 386 | impMu.Lock() |
| 387 | imports[depPath] = imp |
| 388 | impMu.Unlock() |
| 389 | } |
| 390 | return err |
| 391 | }) |
| 392 | } |
| 393 | if err := g.Wait(); err != nil { |
| 394 | // Failure to import a package should not abort the whole operation. |
| 395 | // Stop only if the context was cancelled, a likely cause. |
| 396 | // Import errors will be reported as type diagnostics. |
| 397 | if ctx.Err() != nil { |
| 398 | return nil, ctx.Err() |
| 399 | } |
| 400 | } |
| 401 | } |
| 402 | |
| 403 | // Wait to acquire a CPU token. |
| 404 | // |
| 405 | // Note: it is important to acquire this token only after awaiting |
| 406 | // predecessors, to avoid starvation. |
| 407 | select { |
| 408 | case <-ctx.Done(): |
| 409 | return nil, ctx.Err() |
| 410 | case b.cpulimit <- unit{}: |
| 411 | defer func() { |
| 412 | <-b.cpulimit // release CPU token |
| 413 | }() |
| 414 | } |
| 415 | |
| 416 | // Compute the syntax package. |
| 417 | p, err := b.checkPackage(ctx, fset, ph, imports) |
| 418 | if err != nil { |
| 419 | return nil, err // e.g. I/O error, cancelled |
| 420 | } |
| 421 | |
| 422 | // Update caches. |
| 423 | go storePackageResults(ctx, ph, p) // ...and write all packages to disk |
| 424 | return p, nil |
no test coverage detected