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https://github.com/golang/go
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252024b829
This change just separates minor changes made along the course of the memoization CL out into their own change. This will clean up the diffs in the memoization CL. Change-Id: I7d59e05ba6472af5f1bf516b1e5b879a5815b9a5 Reviewed-on: https://go-review.googlesource.com/c/tools/+/183250 Run-TryBot: Rebecca Stambler <rstambler@golang.org> Reviewed-by: Ian Cottrell <iancottrell@google.com>
71 lines
1.4 KiB
Go
71 lines
1.4 KiB
Go
// Copyright 2018 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package cache
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import (
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"context"
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"go/token"
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"path/filepath"
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"strings"
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"sync"
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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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// viewFile extends source.File with helper methods for the view package.
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type viewFile interface {
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source.File
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filename() string
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addURI(uri span.URI) int
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}
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// fileBase holds the common functionality for all files.
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// It is intended to be embedded in the file implementations
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type fileBase struct {
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uris []span.URI
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fname string
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kind source.FileKind
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view *view
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handleMu sync.Mutex
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handle source.FileHandle
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token *token.File
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}
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func basename(filename string) string {
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return strings.ToLower(filepath.Base(filename))
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}
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func (f *fileBase) URI() span.URI {
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return f.uris[0]
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}
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func (f *fileBase) filename() string {
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return f.fname
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}
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// View returns the view associated with the file.
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func (f *fileBase) View() source.View {
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return f.view
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}
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// Content returns a handle for the contents of the file.
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func (f *fileBase) Handle(ctx context.Context) source.FileHandle {
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f.handleMu.Lock()
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defer f.handleMu.Unlock()
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if f.handle == nil {
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f.handle = f.view.Session().GetFile(f.URI())
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}
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return f.handle
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}
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func (f *fileBase) FileSet() *token.FileSet {
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return f.view.Session().Cache().FileSet()
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}
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