mirror of
https://github.com/golang/go
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1081e67f6b
This changes adds basic support for running `go mod tidy` as a code action when a user opens a go.mod file. When we have a command available like `go mod tidy -check`, we will be able to return edits as part of the codeAction. For now, we execute the command directly. This change also required a few modifications to our handling of file kinds so that we could distinguish between a Go file and a go.mod file. Change-Id: I343079b8886724b67f90a314e45639545a34f21e Reviewed-on: https://go-review.googlesource.com/c/tools/+/196322 Run-TryBot: Rebecca Stambler <rstambler@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Cottrell <iancottrell@google.com>
120 lines
2.6 KiB
Go
120 lines
2.6 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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"crypto/sha1"
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"fmt"
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"go/token"
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"strconv"
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"sync/atomic"
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"golang.org/x/tools/internal/lsp/debug"
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"golang.org/x/tools/internal/lsp/source"
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"golang.org/x/tools/internal/memoize"
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"golang.org/x/tools/internal/span"
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)
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func New() source.Cache {
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index := atomic.AddInt64(&cacheIndex, 1)
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c := &cache{
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fs: &nativeFileSystem{},
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id: strconv.FormatInt(index, 10),
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fset: token.NewFileSet(),
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}
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debug.AddCache(debugCache{c})
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return c
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}
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type cache struct {
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fs source.FileSystem
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id string
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fset *token.FileSet
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store memoize.Store
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}
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type fileKey struct {
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identity source.FileIdentity
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}
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type fileHandle struct {
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cache *cache
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underlying source.FileHandle
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handle *memoize.Handle
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}
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type fileData struct {
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memoize.NoCopy
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bytes []byte
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hash string
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err error
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}
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func (c *cache) GetFile(uri span.URI, kind source.FileKind) source.FileHandle {
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underlying := c.fs.GetFile(uri, kind)
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key := fileKey{
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identity: underlying.Identity(),
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}
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h := c.store.Bind(key, func(ctx context.Context) interface{} {
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data := &fileData{}
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data.bytes, data.hash, data.err = underlying.Read(ctx)
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return data
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})
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return &fileHandle{
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cache: c,
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underlying: underlying,
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handle: h,
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}
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}
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func (c *cache) NewSession(ctx context.Context) source.Session {
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index := atomic.AddInt64(&sessionIndex, 1)
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s := &session{
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cache: c,
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id: strconv.FormatInt(index, 10),
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options: source.DefaultOptions,
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overlays: make(map[span.URI]*overlay),
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filesWatchMap: NewWatchMap(),
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}
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debug.AddSession(debugSession{s})
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return s
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}
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func (c *cache) FileSet() *token.FileSet {
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return c.fset
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}
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func (h *fileHandle) FileSystem() source.FileSystem {
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return h.cache
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}
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func (h *fileHandle) Identity() source.FileIdentity {
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return h.underlying.Identity()
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}
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func (h *fileHandle) Read(ctx context.Context) ([]byte, string, error) {
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v := h.handle.Get(ctx)
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if v == nil {
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return nil, "", ctx.Err()
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}
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data := v.(*fileData)
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return data.bytes, data.hash, data.err
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}
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func hashContents(contents []byte) string {
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// TODO: consider whether sha1 is the best choice here
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// This hash is used for internal identity detection only
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return fmt.Sprintf("%x", sha1.Sum(contents))
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}
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var cacheIndex, sessionIndex, viewIndex int64
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type debugCache struct{ *cache }
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func (c *cache) ID() string { return c.id }
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func (c debugCache) FileSet() *token.FileSet { return c.fset }
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