mirror of
https://github.com/golang/go
synced 2024-10-01 03:28:32 -06:00
c70d86f8b7
Instead of using a simple path map we now attempt to match files with os.SameFile with fast paths for exact path matches. This should fix issues both with symlinked directories (the mac tmp folder) and with case sensitivity (windows) Change-Id: I014dd01f89d08a348e7de7697cbc3a2512a6e5b3 Reviewed-on: https://go-review.googlesource.com/c/tools/+/169699 Reviewed-by: Rebecca Stambler <rstambler@golang.org>
127 lines
2.6 KiB
Go
127 lines
2.6 KiB
Go
// Copyright 2018 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 cache
|
|
|
|
import (
|
|
"context"
|
|
"go/ast"
|
|
"go/token"
|
|
"io/ioutil"
|
|
"path/filepath"
|
|
"strings"
|
|
|
|
"golang.org/x/tools/internal/lsp/source"
|
|
"golang.org/x/tools/internal/span"
|
|
)
|
|
|
|
// File holds all the information we know about a file.
|
|
type File struct {
|
|
uris []span.URI
|
|
filename string
|
|
basename string
|
|
|
|
view *View
|
|
active bool
|
|
content []byte
|
|
ast *ast.File
|
|
token *token.File
|
|
pkg *Package
|
|
meta *metadata
|
|
imports []*ast.ImportSpec
|
|
}
|
|
|
|
func basename(filename string) string {
|
|
return strings.ToLower(filepath.Base(filename))
|
|
}
|
|
|
|
func (f *File) URI() span.URI {
|
|
return f.uris[0]
|
|
}
|
|
|
|
// GetContent returns the contents of the file, reading it from file system if needed.
|
|
func (f *File) GetContent(ctx context.Context) []byte {
|
|
f.view.mu.Lock()
|
|
defer f.view.mu.Unlock()
|
|
|
|
if ctx.Err() == nil {
|
|
f.read(ctx)
|
|
}
|
|
|
|
return f.content
|
|
}
|
|
|
|
func (f *File) GetFileSet(ctx context.Context) *token.FileSet {
|
|
return f.view.Config.Fset
|
|
}
|
|
|
|
func (f *File) GetToken(ctx context.Context) *token.File {
|
|
f.view.mu.Lock()
|
|
defer f.view.mu.Unlock()
|
|
|
|
if f.token == nil || len(f.view.contentChanges) > 0 {
|
|
if _, err := f.view.parse(ctx, f); err != nil {
|
|
return nil
|
|
}
|
|
}
|
|
return f.token
|
|
}
|
|
|
|
func (f *File) GetAST(ctx context.Context) *ast.File {
|
|
f.view.mu.Lock()
|
|
defer f.view.mu.Unlock()
|
|
|
|
if f.ast == nil || len(f.view.contentChanges) > 0 {
|
|
if _, err := f.view.parse(ctx, f); err != nil {
|
|
return nil
|
|
}
|
|
}
|
|
return f.ast
|
|
}
|
|
|
|
func (f *File) GetPackage(ctx context.Context) source.Package {
|
|
f.view.mu.Lock()
|
|
defer f.view.mu.Unlock()
|
|
if f.pkg == nil || len(f.view.contentChanges) > 0 {
|
|
errs, err := f.view.parse(ctx, f)
|
|
if err != nil {
|
|
// Create diagnostics for errors if we are able to.
|
|
if len(errs) > 0 {
|
|
return &Package{errors: errs}
|
|
}
|
|
return nil
|
|
}
|
|
}
|
|
return f.pkg
|
|
}
|
|
|
|
// read is the internal part of GetContent. It assumes that the caller is
|
|
// holding the mutex of the file's view.
|
|
func (f *File) read(ctx context.Context) {
|
|
if f.content != nil {
|
|
if len(f.view.contentChanges) == 0 {
|
|
return
|
|
}
|
|
|
|
f.view.mcache.mu.Lock()
|
|
err := f.view.applyContentChanges(ctx)
|
|
f.view.mcache.mu.Unlock()
|
|
|
|
if err == nil {
|
|
return
|
|
}
|
|
}
|
|
// We don't know the content yet, so read it.
|
|
content, err := ioutil.ReadFile(f.filename)
|
|
if err != nil {
|
|
return
|
|
}
|
|
f.content = content
|
|
}
|
|
|
|
// isPopulated returns true if all of the computed fields of the file are set.
|
|
func (f *File) isPopulated() bool {
|
|
return f.ast != nil && f.token != nil && f.pkg != nil && f.meta != nil && f.imports != nil
|
|
}
|