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go/internal/lsp/cache/builtin.go
Rebecca Stambler dfcf57064e internal/lsp: stop requiring file kind when fetching a file
This change consolidates the FileKind into only the FileHandle.
Previously, it had been set in multiple places, which required users to
pass in a FileKind when fetching a file. This resulted in confusion,
particularly in places when users did not have access to the file kind.

Change-Id: I9e07d7320c46a21d453ffe108d1431a615706a71
Reviewed-on: https://go-review.googlesource.com/c/tools/+/213459
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2020-01-09 21:19:36 +00:00

63 lines
1.5 KiB
Go

// 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))
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
}