Giant blob of minor changes

[dotfiles/.git] / .config / coc / extensions / coc-go-data / tools / pkg / mod / golang.org / x / tools@v0.0.0-20201105173854-bc9fc8d8c4bc / godoc / vfs / emptyvfs.go

diff --git a/.config/coc/extensions/coc-go-data/tools/pkg/mod/golang.org/x/tools@v0.0.0-20201105173854-bc9fc8d8c4bc/godoc/vfs/emptyvfs.go b/.config/coc/extensions/coc-go-data/tools/pkg/mod/golang.org/x/tools@v0.0.0-20201105173854-bc9fc8d8c4bc/godoc/vfs/emptyvfs.go
new file mode 100644 (file)
index 0000000..8712d5e
--- /dev/null
+++ b/.config/coc/extensions/coc-go-data/tools/pkg/mod/golang.org/x/tools@v0.0.0-20201105173854-bc9fc8d8c4bc/godoc/vfs/emptyvfs.go
@@ -0,0 +1,89 @@
+// Copyright 2016 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 vfs
+
+import (
+       "fmt"
+       "os"
+       "time"
+)
+
+// NewNameSpace returns a NameSpace pre-initialized with an empty
+// emulated directory mounted on the root mount point "/". This
+// allows directory traversal routines to work properly even if
+// a folder is not explicitly mounted at root by the user.
+func NewNameSpace() NameSpace {
+       ns := NameSpace{}
+       ns.Bind("/", &emptyVFS{}, "/", BindReplace)
+       return ns
+}
+
+// type emptyVFS emulates a FileSystem consisting of an empty directory
+type emptyVFS struct{}
+
+// Open implements Opener. Since emptyVFS is an empty directory, all
+// attempts to open a file should returns errors.
+func (e *emptyVFS) Open(path string) (ReadSeekCloser, error) {
+       if path == "/" {
+               return nil, fmt.Errorf("open: / is a directory")
+       }
+       return nil, os.ErrNotExist
+}
+
+// Stat returns os.FileInfo for an empty directory if the path is
+// is root "/" or error. os.FileInfo is implemented by emptyVFS
+func (e *emptyVFS) Stat(path string) (os.FileInfo, error) {
+       if path == "/" {
+               return e, nil
+       }
+       return nil, os.ErrNotExist
+}
+
+func (e *emptyVFS) Lstat(path string) (os.FileInfo, error) {
+       return e.Stat(path)
+}
+
+// ReadDir returns an empty os.FileInfo slice for "/", else error.
+func (e *emptyVFS) ReadDir(path string) ([]os.FileInfo, error) {
+       if path == "/" {
+               return []os.FileInfo{}, nil
+       }
+       return nil, os.ErrNotExist
+}
+
+func (e *emptyVFS) String() string {
+       return "emptyVFS(/)"
+}
+
+func (e *emptyVFS) RootType(path string) RootType {
+       return ""
+}
+
+// These functions below implement os.FileInfo for the single
+// empty emulated directory.
+
+func (e *emptyVFS) Name() string {
+       return "/"
+}
+
+func (e *emptyVFS) Size() int64 {
+       return 0
+}
+
+func (e *emptyVFS) Mode() os.FileMode {
+       return os.ModeDir | os.ModePerm
+}
+
+func (e *emptyVFS) ModTime() time.Time {
+       return time.Time{}
+}
+
+func (e *emptyVFS) IsDir() bool {
+       return true
+}
+
+func (e *emptyVFS) Sys() interface{} {
+       return nil
+}