blob: 19bf46b315034fb144bebfde184b22c62c7acb61 [file] [log] [blame]
// Copyright 2018 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/token"
"path/filepath"
"strings"
"sync"
"golang.org/x/tools/internal/lsp/source"
"golang.org/x/tools/internal/span"
)
// viewFile extends source.File with helper methods for the view package.
type viewFile interface {
source.File
filename() string
addURI(uri span.URI) int
}
// fileBase holds the common functionality for all files.
// It is intended to be embedded in the file implementations
type fileBase struct {
uris []span.URI
fname string
kind source.FileKind
view *view
handleMu sync.Mutex
handle source.FileHandle
}
func basename(filename string) string {
return strings.ToLower(filepath.Base(filename))
}
func (f *fileBase) URI() span.URI {
return f.uris[0]
}
func (f *fileBase) filename() string {
return f.fname
}
// View returns the view associated with the file.
func (f *fileBase) View() source.View {
return f.view
}
// Content returns a handle for the contents of the file.
func (f *fileBase) Handle(ctx context.Context) source.FileHandle {
f.handleMu.Lock()
defer f.handleMu.Unlock()
if f.handle == nil {
f.handle = f.view.Session().GetFile(f.URI())
}
return f.handle
}
func (f *fileBase) FileSet() *token.FileSet {
return f.view.Session().Cache().FileSet()
}