blob: 00d68326da37997f1ca6651b932708b107dea182 [file] [log] [blame]
// Copyright 2019 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package cache
import (
"context"
"go/ast"
"golang.org/x/tools/go/packages"
"golang.org/x/tools/internal/lsp/source"
"golang.org/x/tools/internal/span"
)
type builtinPkg struct {
pkg *ast.Package
files []source.ParseGoHandle
}
func (b *builtinPkg) Lookup(name string) *ast.Object {
if b == nil || b.pkg == nil || b.pkg.Scope == nil {
return nil
}
return b.pkg.Scope.Lookup(name)
}
func (b *builtinPkg) CompiledGoFiles() []source.ParseGoHandle {
return b.files
}
// buildBuiltinPkg builds the view's builtin package.
// It assumes that the view is not active yet,
// i.e. it has not been added to the session's list of views.
func (v *view) buildBuiltinPackage(ctx context.Context) error {
cfg := v.Config(ctx)
pkgs, err := packages.Load(cfg, "builtin")
if err != nil {
return err
}
if len(pkgs) != 1 {
return err
}
pkg := pkgs[0]
files := make(map[string]*ast.File)
for _, filename := range pkg.GoFiles {
fh := v.session.GetFile(span.FileURI(filename), source.Go)
ph := v.session.cache.ParseGoHandle(fh, source.ParseFull)
v.builtin.files = append(v.builtin.files, ph)
file, _, _, err := ph.Parse(ctx)
if err != nil {
return err
}
files[filename] = file
v.ignoredURIsMu.Lock()
v.ignoredURIs[span.NewURI(filename)] = struct{}{}
v.ignoredURIsMu.Unlock()
}
v.builtin.pkg, err = ast.NewPackage(cfg.Fset, files, nil, nil)
return err
}