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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>
61 lines
1.4 KiB
Go
61 lines
1.4 KiB
Go
// Copyright 2019 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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"io/ioutil"
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"os"
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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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// nativeFileSystem implements FileSystem reading from the normal os file system.
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type nativeFileSystem struct{}
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// nativeFileHandle implements FileHandle for nativeFileSystem
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type nativeFileHandle struct {
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fs *nativeFileSystem
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identity source.FileIdentity
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}
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func (fs *nativeFileSystem) GetFile(uri span.URI) source.FileHandle {
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fi, err := os.Stat(uri.Filename())
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version := fi.ModTime().String()
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if err != nil {
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version = "DOES NOT EXIST"
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}
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return &nativeFileHandle{
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fs: fs,
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identity: source.FileIdentity{
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URI: uri,
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Version: version,
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},
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}
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}
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func (h *nativeFileHandle) FileSystem() source.FileSystem {
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return h.fs
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}
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func (h *nativeFileHandle) Identity() source.FileIdentity {
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return h.identity
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}
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func (h *nativeFileHandle) Kind() source.FileKind {
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// TODO: How should we determine the file kind?
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return source.Go
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}
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func (h *nativeFileHandle) Read(ctx context.Context) ([]byte, string, error) {
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//TODO: this should fail if the version is not the same as the handle
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data, err := ioutil.ReadFile(h.identity.URI.Filename())
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if err != nil {
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return nil, "", err
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}
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return data, hashContents(data), nil
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}
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