mirror of
https://github.com/golang/go
synced 2024-11-19 00:04:40 -07:00
1cc9451822
Parse errors need to be treated separately from actual errors when parsing a file. Parse errors are treated more like values, whereas actual errors should not be propagated to the user. This enables us to delete some of the special handling for context.Canceled errors. Change-Id: I93a02f22b3f54beccbd6bcf26f04bb8da0202c25 Reviewed-on: https://go-review.googlesource.com/c/tools/+/195997 Run-TryBot: Rebecca Stambler <rstambler@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Cottrell <iancottrell@google.com>
59 lines
1.4 KiB
Go
59 lines
1.4 KiB
Go
package cache
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import (
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"context"
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"go/ast"
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"golang.org/x/tools/go/packages"
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"golang.org/x/tools/internal/lsp/source"
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"golang.org/x/tools/internal/span"
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)
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type builtinPkg struct {
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pkg *ast.Package
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files []source.ParseGoHandle
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}
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func (b *builtinPkg) Lookup(name string) *ast.Object {
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if b == nil || b.pkg == nil || b.pkg.Scope == nil {
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return nil
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}
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return b.pkg.Scope.Lookup(name)
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}
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func (b *builtinPkg) Files() []source.ParseGoHandle {
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return b.files
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}
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// buildBuiltinPkg builds the view's builtin package.
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// It assumes that the view is not active yet,
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// i.e. it has not been added to the session's list of views.
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func (view *view) buildBuiltinPackage(ctx context.Context) error {
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cfg := view.Config(ctx)
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pkgs, err := packages.Load(cfg, "builtin")
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if err != nil {
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return err
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}
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if len(pkgs) != 1 {
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return err
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}
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pkg := pkgs[0]
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files := make(map[string]*ast.File)
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for _, filename := range pkg.GoFiles {
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fh := view.session.GetFile(span.FileURI(filename))
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ph := view.session.cache.ParseGoHandle(fh, source.ParseFull)
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view.builtin.files = append(view.builtin.files, ph)
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file, _, _, err := ph.Parse(ctx)
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if err != nil {
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return err
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}
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files[filename] = file
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view.ignoredURIsMu.Lock()
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view.ignoredURIs[span.NewURI(filename)] = struct{}{}
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view.ignoredURIsMu.Unlock()
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}
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view.builtin.pkg, err = ast.NewPackage(cfg.Fset, files, nil, nil)
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return err
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}
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