mirror of
https://github.com/golang/go
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3d17549cdc
This change adds a stub modFile struct for use in the future. It also moves the singleDiagnostic function out into the lsp package, so that the source package does not make decisions about what to show to the user as a diagnostic. Fixes golang/go#32221 Change-Id: I577c66fcd3c1daadaa221b52ff36bfa0fe07fb53 Reviewed-on: https://go-review.googlesource.com/c/tools/+/178681 Run-TryBot: Rebecca Stambler <rstambler@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Cottrell <iancottrell@google.com>
94 lines
2.1 KiB
Go
94 lines
2.1 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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"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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view *view
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fc *source.FileContent
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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 the contents of the file, reading it from file system if needed.
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func (f *fileBase) Content(ctx context.Context) *source.FileContent {
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f.view.mu.Lock()
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defer f.view.mu.Unlock()
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f.read(ctx)
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return f.fc
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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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// read is the internal part of GetContent. It assumes that the caller is
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// holding the mutex of the file's view.
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func (f *fileBase) read(ctx context.Context) {
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if err := ctx.Err(); err != nil {
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f.fc = &source.FileContent{Error: err}
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return
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}
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if f.fc != nil {
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if len(f.view.contentChanges) == 0 {
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return
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}
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f.view.mcache.mu.Lock()
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err := f.view.applyContentChanges(ctx)
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f.view.mcache.mu.Unlock()
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if err != nil {
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f.fc = &source.FileContent{Error: err}
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return
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}
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}
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// We don't know the content yet, so read it.
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f.fc = f.view.Session().ReadFile(f.URI())
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}
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// isPopulated returns true if all of the computed fields of the file are set.
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func (f *goFile) isPopulated() bool {
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return f.ast != nil && f.token != nil && f.pkg != nil && f.meta != nil && f.imports != nil
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}
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