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accounts/abi/bind: stop using goimports in the binding generator (#17768)

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This commit is contained in:
Jeremy Schlatter 2018-10-05 13:24:54 -07:00 committed by Felix Lange
parent 5b0c9c8ae5
commit 5ed3960b9b
15 changed files with 153 additions and 11418 deletions
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6
accounts/abi/bind/bind.go
View File

@ -23,13 +23,13 @@ package bind
import (
"bytes"
"fmt"
"go/format"
"regexp"
"strings"
"text/template"
"unicode"
"github.com/ethereum/go-ethereum/accounts/abi"
"golang.org/x/tools/imports"
)
// Lang is a target programming language selector to generate bindings for.
@ -145,9 +145,9 @@ func Bind(types []string, abis []string, bytecodes []string, pkg string, lang La
if err := tmpl.Execute(buffer, data); err != nil {
return "", err
}
// For Go bindings pass the code through goimports to clean it up and double check
// For Go bindings pass the code through gofmt to clean it up
if lang == LangGo {
code, err := imports.Process(".", buffer.Bytes(), nil)
code, err := format.Source(buffer.Bytes())
if err != nil {
return "", fmt.Errorf("%v\n%s", err, buffer)
}

142
accounts/abi/bind/bind_test.go
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File diff suppressed because one or more lines are too long

24
accounts/abi/bind/template.go
View File

@ -64,6 +64,30 @@ const tmplSourceGo = `
package {{.Package}}
import (
"math/big"
"strings"
ethereum "github.com/ethereum/go-ethereum"
"github.com/ethereum/go-ethereum/accounts/abi"
"github.com/ethereum/go-ethereum/accounts/abi/bind"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/event"
)
// Reference imports to suppress errors if they are not otherwise used.
var (
_ = big.NewInt
_ = strings.NewReader
_ = ethereum.NotFound
_ = abi.U256
_ = bind.Bind
_ = common.Big1
_ = types.BloomLookup
_ = event.NewSubscription
)
{{range $contract := .Contracts}}
// {{.Type}}ABI is the input ABI used to generate the binding from.
const {{.Type}}ABI = "{{.InputABI}}"

172
vendor/golang.org/x/tools/imports/fastwalk.go generated vendored
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@ -1,172 +0,0 @@
// Copyright 2016 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.
// A faster implementation of filepath.Walk.
//
// filepath.Walk's design necessarily calls os.Lstat on each file,
// even if the caller needs less info. And goimports only need to know
// the type of each file. The kernel interface provides the type in
// the Readdir call but the standard library ignored it.
// fastwalk_unix.go contains a fork of the syscall routines.
//
// See golang.org/issue/16399
package imports
import (
"errors"
"os"
"path/filepath"
"runtime"
)
// traverseLink is a sentinel error for fastWalk, similar to filepath.SkipDir.
var traverseLink = errors.New("traverse symlink, assuming target is a directory")
// fastWalk walks the file tree rooted at root, calling walkFn for
// each file or directory in the tree, including root.
//
// If fastWalk returns filepath.SkipDir, the directory is skipped.
//
// Unlike filepath.Walk:
// * file stat calls must be done by the user.
// The only provided metadata is the file type, which does not include
// any permission bits.
// * multiple goroutines stat the filesystem concurrently. The provided
// walkFn must be safe for concurrent use.
// * fastWalk can follow symlinks if walkFn returns the traverseLink
// sentinel error. It is the walkFn's responsibility to prevent
// fastWalk from going into symlink cycles.
func fastWalk(root string, walkFn func(path string, typ os.FileMode) error) error {
// TODO(bradfitz): make numWorkers configurable? We used a
// minimum of 4 to give the kernel more info about multiple
// things we want, in hopes its I/O scheduling can take
// advantage of that. Hopefully most are in cache. Maybe 4 is
// even too low of a minimum. Profile more.
numWorkers := 4
if n := runtime.NumCPU(); n > numWorkers {
numWorkers = n
}
w := &walker{
fn: walkFn,
enqueuec: make(chan walkItem, numWorkers), // buffered for performance
workc: make(chan walkItem, numWorkers), // buffered for performance
donec: make(chan struct{}),
// buffered for correctness & not leaking goroutines:
resc: make(chan error, numWorkers),
}
defer close(w.donec)
// TODO(bradfitz): start the workers as needed? maybe not worth it.
for i := 0; i < numWorkers; i++ {
go w.doWork()
}
todo := []walkItem{{dir: root}}
out := 0
for {
workc := w.workc
var workItem walkItem
if len(todo) == 0 {
workc = nil
} else {
workItem = todo[len(todo)-1]
}
select {
case workc <- workItem:
todo = todo[:len(todo)-1]
out++
case it := <-w.enqueuec:
todo = append(todo, it)
case err := <-w.resc:
out--
if err != nil {
return err
}
if out == 0 && len(todo) == 0 {
// It's safe to quit here, as long as the buffered
// enqueue channel isn't also readable, which might
// happen if the worker sends both another unit of
// work and its result before the other select was
// scheduled and both w.resc and w.enqueuec were
// readable.
select {
case it := <-w.enqueuec:
todo = append(todo, it)
default:
return nil
}
}
}
}
}
// doWork reads directories as instructed (via workc) and runs the
// user's callback function.
func (w *walker) doWork() {
for {
select {
case <-w.donec:
return
case it := <-w.workc:
w.resc <- w.walk(it.dir, !it.callbackDone)
}
}
}
type walker struct {
fn func(path string, typ os.FileMode) error
donec chan struct{} // closed on fastWalk's return
workc chan walkItem // to workers
enqueuec chan walkItem // from workers
resc chan error // from workers
}
type walkItem struct {
dir string
callbackDone bool // callback already called; don't do it again
}
func (w *walker) enqueue(it walkItem) {
select {
case w.enqueuec <- it:
case <-w.donec:
}
}
func (w *walker) onDirEnt(dirName, baseName string, typ os.FileMode) error {
joined := dirName + string(os.PathSeparator) + baseName
if typ == os.ModeDir {
w.enqueue(walkItem{dir: joined})
return nil
}
err := w.fn(joined, typ)
if typ == os.ModeSymlink {
if err == traverseLink {
// Set callbackDone so we don't call it twice for both the
// symlink-as-symlink and the symlink-as-directory later:
w.enqueue(walkItem{dir: joined, callbackDone: true})
return nil
}
if err == filepath.SkipDir {
// Permit SkipDir on symlinks too.
return nil
}
}
return err
}
func (w *walker) walk(root string, runUserCallback bool) error {
if runUserCallback {
err := w.fn(root, os.ModeDir)
if err == filepath.SkipDir {
return nil
}
if err != nil {
return err
}
}
return readDir(root, w.onDirEnt)
}

13
vendor/golang.org/x/tools/imports/fastwalk_dirent_fileno.go generated vendored
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@ -1,13 +0,0 @@
// Copyright 2016 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.
// +build freebsd openbsd netbsd
package imports
import "syscall"
func direntInode(dirent *syscall.Dirent) uint64 {
return uint64(dirent.Fileno)
}

13
vendor/golang.org/x/tools/imports/fastwalk_dirent_ino.go generated vendored
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@ -1,13 +0,0 @@
// Copyright 2016 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.
// +build linux,!appengine darwin
package imports
import "syscall"
func direntInode(dirent *syscall.Dirent) uint64 {
return uint64(dirent.Ino)
}

29
vendor/golang.org/x/tools/imports/fastwalk_portable.go generated vendored
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@ -1,29 +0,0 @@
// Copyright 2016 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.
// +build appengine !linux,!darwin,!freebsd,!openbsd,!netbsd
package imports
import (
"io/ioutil"
"os"
)
// readDir calls fn for each directory entry in dirName.
// It does not descend into directories or follow symlinks.
// If fn returns a non-nil error, readDir returns with that error
// immediately.
func readDir(dirName string, fn func(dirName, entName string, typ os.FileMode) error) error {
fis, err := ioutil.ReadDir(dirName)
if err != nil {
return err
}
for _, fi := range fis {
if err := fn(dirName, fi.Name(), fi.Mode()&os.ModeType); err != nil {
return err
}
}
return nil
}

122
vendor/golang.org/x/tools/imports/fastwalk_unix.go generated vendored
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@ -1,122 +0,0 @@
// Copyright 2016 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.
// +build linux,!appengine darwin freebsd openbsd netbsd
package imports
import (
"bytes"
"fmt"
"os"
"syscall"
"unsafe"
)
const blockSize = 8 << 10
// unknownFileMode is a sentinel (and bogus) os.FileMode
// value used to represent a syscall.DT_UNKNOWN Dirent.Type.
const unknownFileMode os.FileMode = os.ModeNamedPipe | os.ModeSocket | os.ModeDevice
func readDir(dirName string, fn func(dirName, entName string, typ os.FileMode) error) error {
fd, err := syscall.Open(dirName, 0, 0)
if err != nil {
return err
}
defer syscall.Close(fd)
// The buffer must be at least a block long.
buf := make([]byte, blockSize) // stack-allocated; doesn't escape
bufp := 0 // starting read position in buf
nbuf := 0 // end valid data in buf
for {
if bufp >= nbuf {
bufp = 0
nbuf, err = syscall.ReadDirent(fd, buf)
if err != nil {
return os.NewSyscallError("readdirent", err)
}
if nbuf <= 0 {
return nil
}
}
consumed, name, typ := parseDirEnt(buf[bufp:nbuf])
bufp += consumed
if name == "" || name == "." || name == ".." {
continue
}
// Fallback for filesystems (like old XFS) that don't
// support Dirent.Type and have DT_UNKNOWN (0) there
// instead.
if typ == unknownFileMode {
fi, err := os.Lstat(dirName + "/" + name)
if err != nil {
// It got deleted in the meantime.
if os.IsNotExist(err) {
continue
}
return err
}
typ = fi.Mode() & os.ModeType
}
if err := fn(dirName, name, typ); err != nil {
return err
}
}
}
func parseDirEnt(buf []byte) (consumed int, name string, typ os.FileMode) {
// golang.org/issue/15653
dirent := (*syscall.Dirent)(unsafe.Pointer(&buf[0]))
if v := unsafe.Offsetof(dirent.Reclen) + unsafe.Sizeof(dirent.Reclen); uintptr(len(buf)) < v {
panic(fmt.Sprintf("buf size of %d smaller than dirent header size %d", len(buf), v))
}
if len(buf) < int(dirent.Reclen) {
panic(fmt.Sprintf("buf size %d < record length %d", len(buf), dirent.Reclen))
}
consumed = int(dirent.Reclen)
if direntInode(dirent) == 0 { // File absent in directory.
return
}
switch dirent.Type {
case syscall.DT_REG:
typ = 0
case syscall.DT_DIR:
typ = os.ModeDir
case syscall.DT_LNK:
typ = os.ModeSymlink
case syscall.DT_BLK:
typ = os.ModeDevice
case syscall.DT_FIFO:
typ = os.ModeNamedPipe
case syscall.DT_SOCK:
typ = os.ModeSocket
case syscall.DT_UNKNOWN:
typ = unknownFileMode
default:
// Skip weird things.
// It's probably a DT_WHT (http://lwn.net/Articles/325369/)
// or something. Revisit if/when this package is moved outside
// of goimports. goimports only cares about regular files,
// symlinks, and directories.
return
}
nameBuf := (*[unsafe.Sizeof(dirent.Name)]byte)(unsafe.Pointer(&dirent.Name[0]))
nameLen := bytes.IndexByte(nameBuf[:], 0)
if nameLen < 0 {
panic("failed to find terminating 0 byte in dirent")
}
// Special cases for common things:
if nameLen == 1 && nameBuf[0] == '.' {
name = "."
} else if nameLen == 2 && nameBuf[0] == '.' && nameBuf[1] == '.' {
name = ".."
} else {
name = string(nameBuf[:nameLen])
}
return
}

978
vendor/golang.org/x/tools/imports/fix.go generated vendored
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@ -1,978 +0,0 @@
// Copyright 2013 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 imports
import (
"bufio"
"bytes"
"fmt"
"go/ast"
"go/build"
"go/parser"
"go/token"
"io/ioutil"
"log"
"os"
"path"
"path/filepath"
"sort"
"strings"
"sync"
"golang.org/x/tools/go/ast/astutil"
)
// Debug controls verbose logging.
var Debug = false
var (
inTests = false // set true by fix_test.go; if false, no need to use testMu
testMu sync.RWMutex // guards globals reset by tests; used only if inTests
)
// If set, LocalPrefix instructs Process to sort import paths with the given
// prefix into another group after 3rd-party packages.
var LocalPrefix string
// importToGroup is a list of functions which map from an import path to
// a group number.
var importToGroup = []func(importPath string) (num int, ok bool){
func(importPath string) (num int, ok bool) {
if LocalPrefix != "" && strings.HasPrefix(importPath, LocalPrefix) {
return 3, true
}
return
},
func(importPath string) (num int, ok bool) {
if strings.HasPrefix(importPath, "appengine") {
return 2, true
}
return
},
func(importPath string) (num int, ok bool) {
if strings.Contains(importPath, ".") {
return 1, true
}
return
},
}
func importGroup(importPath string) int {
for _, fn := range importToGroup {
if n, ok := fn(importPath); ok {
return n
}
}
return 0
}
// packageInfo is a summary of features found in a package.
type packageInfo struct {
Globals map[string]bool // symbol => true
}
// dirPackageInfo gets information from other files in the package.
func dirPackageInfo(srcDir, filename string) (*packageInfo, error) {
considerTests := strings.HasSuffix(filename, "_test.go")
// Handle file from stdin
if _, err := os.Stat(filename); err != nil {
if os.IsNotExist(err) {
return &packageInfo{}, nil
}
return nil, err
}
fileBase := filepath.Base(filename)
packageFileInfos, err := ioutil.ReadDir(srcDir)
if err != nil {
return nil, err
}
info := &packageInfo{Globals: make(map[string]bool)}
for _, fi := range packageFileInfos {
if fi.Name() == fileBase || !strings.HasSuffix(fi.Name(), ".go") {
continue
}
if !considerTests && strings.HasSuffix(fi.Name(), "_test.go") {
continue
}
fileSet := token.NewFileSet()
root, err := parser.ParseFile(fileSet, filepath.Join(srcDir, fi.Name()), nil, 0)
if err != nil {
continue
}
for _, decl := range root.Decls {
genDecl, ok := decl.(*ast.GenDecl)
if !ok {
continue
}
for _, spec := range genDecl.Specs {
valueSpec, ok := spec.(*ast.ValueSpec)
if !ok {
continue
}
info.Globals[valueSpec.Names[0].Name] = true
}
}
}
return info, nil
}
func fixImports(fset *token.FileSet, f *ast.File, filename string) (added []string, err error) {
// refs are a set of possible package references currently unsatisfied by imports.
// first key: either base package (e.g. "fmt") or renamed package
// second key: referenced package symbol (e.g. "Println")
refs := make(map[string]map[string]bool)
// decls are the current package imports. key is base package or renamed package.
decls := make(map[string]*ast.ImportSpec)
abs, err := filepath.Abs(filename)
if err != nil {
return nil, err
}
srcDir := filepath.Dir(abs)
if Debug {
log.Printf("fixImports(filename=%q), abs=%q, srcDir=%q ...", filename, abs, srcDir)
}
var packageInfo *packageInfo
var loadedPackageInfo bool
// collect potential uses of packages.
var visitor visitFn
visitor = visitFn(func(node ast.Node) ast.Visitor {
if node == nil {
return visitor
}
switch v := node.(type) {
case *ast.ImportSpec:
if v.Name != nil {
decls[v.Name.Name] = v
break
}
ipath := strings.Trim(v.Path.Value, `"`)
if ipath == "C" {
break
}
local := importPathToName(ipath, srcDir)
decls[local] = v
case *ast.SelectorExpr:
xident, ok := v.X.(*ast.Ident)
if !ok {
break
}
if xident.Obj != nil {
// if the parser can resolve it, it's not a package ref
break
}
pkgName := xident.Name
if refs[pkgName] == nil {
refs[pkgName] = make(map[string]bool)
}
if !loadedPackageInfo {
loadedPackageInfo = true
packageInfo, _ = dirPackageInfo(srcDir, filename)
}
if decls[pkgName] == nil && (packageInfo == nil || !packageInfo.Globals[pkgName]) {
refs[pkgName][v.Sel.Name] = true
}
}
return visitor
})
ast.Walk(visitor, f)
// Nil out any unused ImportSpecs, to be removed in following passes
unusedImport := map[string]string{}
for pkg, is := range decls {
if refs[pkg] == nil && pkg != "_" && pkg != "." {
name := ""
if is.Name != nil {
name = is.Name.Name
}
unusedImport[strings.Trim(is.Path.Value, `"`)] = name
}
}
for ipath, name := range unusedImport {
if ipath == "C" {
// Don't remove cgo stuff.
continue
}
astutil.DeleteNamedImport(fset, f, name, ipath)
}
for pkgName, symbols := range refs {
if len(symbols) == 0 {
// skip over packages already imported
delete(refs, pkgName)
}
}
// Search for imports matching potential package references.
searches := 0
type result struct {
ipath string // import path (if err == nil)
name string // optional name to rename import as
err error
}
results := make(chan result)
for pkgName, symbols := range refs {
go func(pkgName string, symbols map[string]bool) {
ipath, rename, err := findImport(pkgName, symbols, filename)
r := result{ipath: ipath, err: err}
if rename {
r.name = pkgName
}
results <- r
}(pkgName, symbols)
searches++
}
for i := 0; i < searches; i++ {
result := <-results
if result.err != nil {
return nil, result.err
}
if result.ipath != "" {
if result.name != "" {
astutil.AddNamedImport(fset, f, result.name, result.ipath)
} else {
astutil.AddImport(fset, f, result.ipath)
}
added = append(added, result.ipath)
}
}
return added, nil
}
// importPathToName returns the package name for the given import path.
var importPathToName func(importPath, srcDir string) (packageName string) = importPathToNameGoPath
// importPathToNameBasic assumes the package name is the base of import path.
func importPathToNameBasic(importPath, srcDir string) (packageName string) {
return path.Base(importPath)
}
// importPathToNameGoPath finds out the actual package name, as declared in its .go files.
// If there's a problem, it falls back to using importPathToNameBasic.
func importPathToNameGoPath(importPath, srcDir string) (packageName string) {
// Fast path for standard library without going to disk.
if pkg, ok := stdImportPackage[importPath]; ok {
return pkg
}
pkgName, err := importPathToNameGoPathParse(importPath, srcDir)
if Debug {
log.Printf("importPathToNameGoPathParse(%q, srcDir=%q) = %q, %v", importPath, srcDir, pkgName, err)
}
if err == nil {
return pkgName
}
return importPathToNameBasic(importPath, srcDir)
}
// importPathToNameGoPathParse is a faster version of build.Import if
// the only thing desired is the package name. It uses build.FindOnly
// to find the directory and then only parses one file in the package,
// trusting that the files in the directory are consistent.
func importPathToNameGoPathParse(importPath, srcDir string) (packageName string, err error) {
buildPkg, err := build.Import(importPath, srcDir, build.FindOnly)
if err != nil {
return "", err
}
d, err := os.Open(buildPkg.Dir)
if err != nil {
return "", err
}
names, err := d.Readdirnames(-1)
d.Close()
if err != nil {
return "", err
}
sort.Strings(names) // to have predictable behavior
var lastErr error
var nfile int
for _, name := range names {
if !strings.HasSuffix(name, ".go") {
continue
}
if strings.HasSuffix(name, "_test.go") {
continue
}
nfile++
fullFile := filepath.Join(buildPkg.Dir, name)
fset := token.NewFileSet()
f, err := parser.ParseFile(fset, fullFile, nil, parser.PackageClauseOnly)
if err != nil {
lastErr = err
continue
}
pkgName := f.Name.Name
if pkgName == "documentation" {
// Special case from go/build.ImportDir, not
// handled by ctx.MatchFile.
continue
}
if pkgName == "main" {
// Also skip package main, assuming it's a +build ignore generator or example.
// Since you can't import a package main anyway, there's no harm here.
continue
}
return pkgName, nil
}
if lastErr != nil {
return "", lastErr
}
return "", fmt.Errorf("no importable package found in %d Go files", nfile)
}
var stdImportPackage = map[string]string{} // "net/http" => "http"
func init() {
// Nothing in the standard library has a package name not
// matching its import base name.
for _, pkg := range stdlib {
if _, ok := stdImportPackage[pkg]; !ok {
stdImportPackage[pkg] = path.Base(pkg)
}
}
}
// Directory-scanning state.
var (
// scanGoRootOnce guards calling scanGoRoot (for $GOROOT)
scanGoRootOnce sync.Once
// scanGoPathOnce guards calling scanGoPath (for $GOPATH)
scanGoPathOnce sync.Once
// populateIgnoreOnce guards calling populateIgnore
populateIgnoreOnce sync.Once
ignoredDirs []os.FileInfo
dirScanMu sync.RWMutex
dirScan map[string]*pkg // abs dir path => *pkg
)
type pkg struct {
dir string // absolute file path to pkg directory ("/usr/lib/go/src/net/http")
importPath string // full pkg import path ("net/http", "foo/bar/vendor/a/b")
importPathShort string // vendorless import path ("net/http", "a/b")
}
// byImportPathShortLength sorts by the short import path length, breaking ties on the
// import string itself.
type byImportPathShortLength []*pkg
func (s byImportPathShortLength) Len() int { return len(s) }
func (s byImportPathShortLength) Less(i, j int) bool {
vi, vj := s[i].importPathShort, s[j].importPathShort
return len(vi) < len(vj) || (len(vi) == len(vj) && vi < vj)
}
func (s byImportPathShortLength) Swap(i, j int) { s[i], s[j] = s[j], s[i] }
// gate is a semaphore for limiting concurrency.
type gate chan struct{}
func (g gate) enter() { g <- struct{}{} }
func (g gate) leave() { <-g }
var visitedSymlinks struct {
sync.Mutex
m map[string]struct{}
}
// guarded by populateIgnoreOnce; populates ignoredDirs.
func populateIgnore() {
for _, srcDir := range build.Default.SrcDirs() {
if srcDir == filepath.Join(build.Default.GOROOT, "src") {
continue
}
populateIgnoredDirs(srcDir)
}
}
// populateIgnoredDirs reads an optional config file at <path>/.goimportsignore
// of relative directories to ignore when scanning for go files.
// The provided path is one of the $GOPATH entries with "src" appended.
func populateIgnoredDirs(path string) {
file := filepath.Join(path, ".goimportsignore")
slurp, err := ioutil.ReadFile(file)
if Debug {
if err != nil {
log.Print(err)
} else {
log.Printf("Read %s", file)
}
}
if err != nil {
return
}
bs := bufio.NewScanner(bytes.NewReader(slurp))
for bs.Scan() {
line := strings.TrimSpace(bs.Text())
if line == "" || strings.HasPrefix(line, "#") {
continue
}
full := filepath.Join(path, line)
if fi, err := os.Stat(full); err == nil {
ignoredDirs = append(ignoredDirs, fi)
if Debug {
log.Printf("Directory added to ignore list: %s", full)
}
} else if Debug {
log.Printf("Error statting entry in .goimportsignore: %v", err)
}
}
}
func skipDir(fi os.FileInfo) bool {
for _, ignoredDir := range ignoredDirs {
if os.SameFile(fi, ignoredDir) {
return true
}
}
return false
}
// shouldTraverse reports whether the symlink fi should, found in dir,
// should be followed. It makes sure symlinks were never visited
// before to avoid symlink loops.
func shouldTraverse(dir string, fi os.FileInfo) bool {
path := filepath.Join(dir, fi.Name())
target, err := filepath.EvalSymlinks(path)
if err != nil {
if !os.IsNotExist(err) {
fmt.Fprintln(os.Stderr, err)
}
return false
}
ts, err := os.Stat(target)
if err != nil {
fmt.Fprintln(os.Stderr, err)
return false
}
if !ts.IsDir() {
return false
}
if skipDir(ts) {
return false
}
realParent, err := filepath.EvalSymlinks(dir)
if err != nil {
fmt.Fprint(os.Stderr, err)
return false
}
realPath := filepath.Join(realParent, fi.Name())
visitedSymlinks.Lock()
defer visitedSymlinks.Unlock()
if visitedSymlinks.m == nil {
visitedSymlinks.m = make(map[string]struct{})
}
if _, ok := visitedSymlinks.m[realPath]; ok {
return false
}
visitedSymlinks.m[realPath] = struct{}{}
return true
}
var testHookScanDir = func(dir string) {}
var scanGoRootDone = make(chan struct{}) // closed when scanGoRoot is done
func scanGoRoot() {
go func() {
scanGoDirs(true)
close(scanGoRootDone)
}()
}
func scanGoPath() { scanGoDirs(false) }
func scanGoDirs(goRoot bool) {
if Debug {
which := "$GOROOT"
if !goRoot {
which = "$GOPATH"
}
log.Printf("scanning " + which)
defer log.Printf("scanned " + which)
}
dirScanMu.Lock()
if dirScan == nil {
dirScan = make(map[string]*pkg)
}
dirScanMu.Unlock()
for _, srcDir := range build.Default.SrcDirs() {
isGoroot := srcDir == filepath.Join(build.Default.GOROOT, "src")
if isGoroot != goRoot {
continue
}
testHookScanDir(srcDir)
walkFn := func(path string, typ os.FileMode) error {
dir := filepath.Dir(path)
if typ.IsRegular() {
if dir == srcDir {
// Doesn't make sense to have regular files
// directly in your $GOPATH/src or $GOROOT/src.
return nil
}
if !strings.HasSuffix(path, ".go") {
return nil
}
dirScanMu.Lock()
if _, dup := dirScan[dir]; !dup {
importpath := filepath.ToSlash(dir[len(srcDir)+len("/"):])
dirScan[dir] = &pkg{
importPath: importpath,
importPathShort: vendorlessImportPath(importpath),
dir: dir,
}
}
dirScanMu.Unlock()
return nil
}
if typ == os.ModeDir {
base := filepath.Base(path)
if base == "" || base[0] == '.' || base[0] == '_' ||
base == "testdata" || base == "node_modules" {
return filepath.SkipDir
}
fi, err := os.Lstat(path)
if err == nil && skipDir(fi) {
if Debug {
log.Printf("skipping directory %q under %s", fi.Name(), dir)
}
return filepath.SkipDir
}
return nil
}
if typ == os.ModeSymlink {
base := filepath.Base(path)
if strings.HasPrefix(base, ".#") {
// Emacs noise.
return nil
}
fi, err := os.Lstat(path)
if err != nil {
// Just ignore it.
return nil
}
if shouldTraverse(dir, fi) {
return traverseLink
}
}
return nil
}
if err := fastWalk(srcDir, walkFn); err != nil {
log.Printf("goimports: scanning directory %v: %v", srcDir, err)
}
}
}
// vendorlessImportPath returns the devendorized version of the provided import path.
// e.g. "foo/bar/vendor/a/b" => "a/b"
func vendorlessImportPath(ipath string) string {
// Devendorize for use in import statement.
if i := strings.LastIndex(ipath, "/vendor/"); i >= 0 {
return ipath[i+len("/vendor/"):]
}
if strings.HasPrefix(ipath, "vendor/") {
return ipath[len("vendor/"):]
}
return ipath
}
// loadExports returns the set of exported symbols in the package at dir.
// It returns nil on error or if the package name in dir does not match expectPackage.
var loadExports func(expectPackage, dir string) map[string]bool = loadExportsGoPath
func loadExportsGoPath(expectPackage, dir string) map[string]bool {
if Debug {
log.Printf("loading exports in dir %s (seeking package %s)", dir, expectPackage)
}
exports := make(map[string]bool)
ctx := build.Default
// ReadDir is like ioutil.ReadDir, but only returns *.go files
// and filters out _test.go files since they're not relevant
// and only slow things down.
ctx.ReadDir = func(dir string) (notTests []os.FileInfo, err error) {
all, err := ioutil.ReadDir(dir)
if err != nil {
return nil, err
}
notTests = all[:0]
for _, fi := range all {
name := fi.Name()
if strings.HasSuffix(name, ".go") && !strings.HasSuffix(name, "_test.go") {
notTests = append(notTests, fi)
}
}
return notTests, nil
}
files, err := ctx.ReadDir(dir)
if err != nil {
log.Print(err)
return nil
}
fset := token.NewFileSet()
for _, fi := range files {
match, err := ctx.MatchFile(dir, fi.Name())
if err != nil || !match {
continue
}
fullFile := filepath.Join(dir, fi.Name())
f, err := parser.ParseFile(fset, fullFile, nil, 0)
if err != nil {
if Debug {
log.Printf("Parsing %s: %v", fullFile, err)
}
return nil
}
pkgName := f.Name.Name
if pkgName == "documentation" {
// Special case from go/build.ImportDir, not
// handled by ctx.MatchFile.
continue
}
if pkgName != expectPackage {
if Debug {
log.Printf("scan of dir %v is not expected package %v (actually %v)", dir, expectPackage, pkgName)
}
return nil
}
for name := range f.Scope.Objects {
if ast.IsExported(name) {
exports[name] = true
}
}
}
if Debug {
exportList := make([]string, 0, len(exports))
for k := range exports {
exportList = append(exportList, k)
}
sort.Strings(exportList)
log.Printf("loaded exports in dir %v (package %v): %v", dir, expectPackage, strings.Join(exportList, ", "))
}
return exports
}
// findImport searches for a package with the given symbols.
// If no package is found, findImport returns ("", false, nil)
//
// This is declared as a variable rather than a function so goimports
// can be easily extended by adding a file with an init function.
//
// The rename value tells goimports whether to use the package name as
// a local qualifier in an import. For example, if findImports("pkg",
// "X") returns ("foo/bar", rename=true), then goimports adds the
// import line:
// import pkg "foo/bar"
// to satisfy uses of pkg.X in the file.
var findImport func(pkgName string, symbols map[string]bool, filename string) (foundPkg string, rename bool, err error) = findImportGoPath
// findImportGoPath is the normal implementation of findImport.
// (Some companies have their own internally.)
func findImportGoPath(pkgName string, symbols map[string]bool, filename string) (foundPkg string, rename bool, err error) {
if inTests {
testMu.RLock()
defer testMu.RUnlock()
}
// Fast path for the standard library.
// In the common case we hopefully never have to scan the GOPATH, which can
// be slow with moving disks.
if pkg, rename, ok := findImportStdlib(pkgName, symbols); ok {
return pkg, rename, nil
}
if pkgName == "rand" && symbols["Read"] {
// Special-case rand.Read.
//
// If findImportStdlib didn't find it above, don't go
// searching for it, lest it find and pick math/rand
// in GOROOT (new as of Go 1.6)
//
// crypto/rand is the safer choice.
return "", false, nil
}
// TODO(sameer): look at the import lines for other Go files in the
// local directory, since the user is likely to import the same packages
// in the current Go file. Return rename=true when the other Go files
// use a renamed package that's also used in the current file.
// Read all the $GOPATH/src/.goimportsignore files before scanning directories.
populateIgnoreOnce.Do(populateIgnore)
// Start scanning the $GOROOT asynchronously, then run the
// GOPATH scan synchronously if needed, and then wait for the
// $GOROOT to finish.
//
// TODO(bradfitz): run each $GOPATH entry async. But nobody
// really has more than one anyway, so low priority.
scanGoRootOnce.Do(scanGoRoot) // async
if !fileInDir(filename, build.Default.GOROOT) {
scanGoPathOnce.Do(scanGoPath) // blocking
}
<-scanGoRootDone
// Find candidate packages, looking only at their directory names first.
var candidates []*pkg
for _, pkg := range dirScan {
if pkgIsCandidate(filename, pkgName, pkg) {
candidates = append(candidates, pkg)
}
}
// Sort the candidates by their import package length,
// assuming that shorter package names are better than long
// ones. Note that this sorts by the de-vendored name, so
// there's no "penalty" for vendoring.
sort.Sort(byImportPathShortLength(candidates))
if Debug {
for i, pkg := range candidates {
log.Printf("%s candidate %d/%d: %v", pkgName, i+1, len(candidates), pkg.importPathShort)
}
}
// Collect exports for packages with matching names.
done := make(chan struct{}) // closed when we find the answer
defer close(done)
rescv := make([]chan *pkg, len(candidates))
for i := range candidates {
rescv[i] = make(chan *pkg)
}
const maxConcurrentPackageImport = 4
loadExportsSem := make(chan struct{}, maxConcurrentPackageImport)
go func() {
for i, pkg := range candidates {
select {
case loadExportsSem <- struct{}{}:
select {
case <-done:
default:
}
case <-done:
return
}
pkg := pkg
resc := rescv[i]
go func() {
if inTests {
testMu.RLock()
defer testMu.RUnlock()
}
defer func() { <-loadExportsSem }()
exports := loadExports(pkgName, pkg.dir)
// If it doesn't have the right
// symbols, send nil to mean no match.
for symbol := range symbols {
if !exports[symbol] {
pkg = nil
break
}
}
select {
case resc <- pkg:
case <-done:
}
}()
}
}()
for _, resc := range rescv {
pkg := <-resc
if pkg == nil {
continue
}
// If the package name in the source doesn't match the import path's base,
// return true so the rewriter adds a name (import foo "github.com/bar/go-foo")
needsRename := path.Base(pkg.importPath) != pkgName
return pkg.importPathShort, needsRename, nil
}
return "", false, nil
}
// pkgIsCandidate reports whether pkg is a candidate for satisfying the
// finding which package pkgIdent in the file named by filename is trying
// to refer to.
//
// This check is purely lexical and is meant to be as fast as possible
// because it's run over all $GOPATH directories to filter out poor
// candidates in order to limit the CPU and I/O later parsing the
// exports in candidate packages.
//
// filename is the file being formatted.
// pkgIdent is the package being searched for, like "client" (if
// searching for "client.New")
func pkgIsCandidate(filename, pkgIdent string, pkg *pkg) bool {
// Check "internal" and "vendor" visibility:
if !canUse(filename, pkg.dir) {
return false
}
// Speed optimization to minimize disk I/O:
// the last two components on disk must contain the
// package name somewhere.
//
// This permits mismatch naming like directory
// "go-foo" being package "foo", or "pkg.v3" being "pkg",
// or directory "google.golang.org/api/cloudbilling/v1"
// being package "cloudbilling", but doesn't
// permit a directory "foo" to be package
// "bar", which is strongly discouraged
// anyway. There's no reason goimports needs
// to be slow just to accomodate that.
lastTwo := lastTwoComponents(pkg.importPathShort)
if strings.Contains(lastTwo, pkgIdent) {
return true
}
if hasHyphenOrUpperASCII(lastTwo) && !hasHyphenOrUpperASCII(pkgIdent) {
lastTwo = lowerASCIIAndRemoveHyphen(lastTwo)
if strings.Contains(lastTwo, pkgIdent) {
return true
}
}
return false
}
func hasHyphenOrUpperASCII(s string) bool {
for i := 0; i < len(s); i++ {
b := s[i]
if b == '-' || ('A' <= b && b <= 'Z') {
return true
}
}
return false
}
func lowerASCIIAndRemoveHyphen(s string) (ret string) {
buf := make([]byte, 0, len(s))
for i := 0; i < len(s); i++ {
b := s[i]
switch {
case b == '-':
continue
case 'A' <= b && b <= 'Z':
buf = append(buf, b+('a'-'A'))
default:
buf = append(buf, b)
}
}
return string(buf)
}
// canUse reports whether the package in dir is usable from filename,
// respecting the Go "internal" and "vendor" visibility rules.
func canUse(filename, dir string) bool {
// Fast path check, before any allocations. If it doesn't contain vendor
// or internal, it's not tricky:
// Note that this can false-negative on directories like "notinternal",
// but we check it correctly below. This is just a fast path.
if !strings.Contains(dir, "vendor") && !strings.Contains(dir, "internal") {
return true
}
dirSlash := filepath.ToSlash(dir)
if !strings.Contains(dirSlash, "/vendor/") && !strings.Contains(dirSlash, "/internal/") && !strings.HasSuffix(dirSlash, "/internal") {
return true
}
// Vendor or internal directory only visible from children of parent.
// That means the path from the current directory to the target directory
// can contain ../vendor or ../internal but not ../foo/vendor or ../foo/internal
// or bar/vendor or bar/internal.
// After stripping all the leading ../, the only okay place to see vendor or internal
// is at the very beginning of the path.
absfile, err := filepath.Abs(filename)
if err != nil {
return false
}
absdir, err := filepath.Abs(dir)
if err != nil {
return false
}
rel, err := filepath.Rel(absfile, absdir)
if err != nil {
return false
}
relSlash := filepath.ToSlash(rel)
if i := strings.LastIndex(relSlash, "../"); i >= 0 {
relSlash = relSlash[i+len("../"):]
}
return !strings.Contains(relSlash, "/vendor/") && !strings.Contains(relSlash, "/internal/") && !strings.HasSuffix(relSlash, "/internal")
}
// lastTwoComponents returns at most the last two path components
// of v, using either / or \ as the path separator.
func lastTwoComponents(v string) string {
nslash := 0
for i := len(v) - 1; i >= 0; i-- {
if v[i] == '/' || v[i] == '\\' {
nslash++
if nslash == 2 {
return v[i:]
}
}
}
return v
}
type visitFn func(node ast.Node) ast.Visitor
func (fn visitFn) Visit(node ast.Node) ast.Visitor {
return fn(node)
}
func findImportStdlib(shortPkg string, symbols map[string]bool) (importPath string, rename, ok bool) {
for symbol := range symbols {
key := shortPkg + "." + symbol
path := stdlib[key]
if path == "" {
if key == "rand.Read" {
continue
}
return "", false, false
}
if importPath != "" && importPath != path {
// Ambiguous. Symbols pointed to different things.
return "", false, false
}
importPath = path
}
if importPath == "" && shortPkg == "rand" && symbols["Read"] {
return "crypto/rand", false, true
}
return importPath, false, importPath != ""
}
// fileInDir reports whether the provided file path looks like
// it's in dir. (without hitting the filesystem)
func fileInDir(file, dir string) bool {
rest := strings.TrimPrefix(file, dir)
if len(rest) == len(file) {
// dir is not a prefix of file.
return false
}
// Check for boundary: either nothing (file == dir), or a slash.
return len(rest) == 0 || rest[0] == '/' || rest[0] == '\\'
}

289
vendor/golang.org/x/tools/imports/imports.go generated vendored
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@ -1,289 +0,0 @@
// Copyright 2013 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.
//go:generate go run mkstdlib.go
// Package imports implements a Go pretty-printer (like package "go/format")
// that also adds or removes import statements as necessary.
package imports // import "golang.org/x/tools/imports"
import (
"bufio"
"bytes"
"fmt"
"go/ast"
"go/format"
"go/parser"
"go/printer"
"go/token"
"io"
"regexp"
"strconv"
"strings"
"golang.org/x/tools/go/ast/astutil"
)
// Options specifies options for processing files.
type Options struct {
Fragment bool // Accept fragment of a source file (no package statement)
AllErrors bool // Report all errors (not just the first 10 on different lines)
Comments bool // Print comments (true if nil *Options provided)
TabIndent bool // Use tabs for indent (true if nil *Options provided)
TabWidth int // Tab width (8 if nil *Options provided)
FormatOnly bool // Disable the insertion and deletion of imports
}
// Process formats and adjusts imports for the provided file.
// If opt is nil the defaults are used.
//
// Note that filename's directory influences which imports can be chosen,
// so it is important that filename be accurate.
// To process data ``as if'' it were in filename, pass the data as a non-nil src.
func Process(filename string, src []byte, opt *Options) ([]byte, error) {
if opt == nil {
opt = &Options{Comments: true, TabIndent: true, TabWidth: 8}
}
fileSet := token.NewFileSet()
file, adjust, err := parse(fileSet, filename, src, opt)
if err != nil {
return nil, err
}
if !opt.FormatOnly {
_, err = fixImports(fileSet, file, filename)
if err != nil {
return nil, err
}
}
sortImports(fileSet, file)
imps := astutil.Imports(fileSet, file)
var spacesBefore []string // import paths we need spaces before
for _, impSection := range imps {
// Within each block of contiguous imports, see if any
// import lines are in different group numbers. If so,
// we'll need to put a space between them so it's
// compatible with gofmt.
lastGroup := -1
for _, importSpec := range impSection {
importPath, _ := strconv.Unquote(importSpec.Path.Value)
groupNum := importGroup(importPath)
if groupNum != lastGroup && lastGroup != -1 {
spacesBefore = append(spacesBefore, importPath)
}
lastGroup = groupNum
}
}
printerMode := printer.UseSpaces
if opt.TabIndent {
printerMode |= printer.TabIndent
}
printConfig := &printer.Config{Mode: printerMode, Tabwidth: opt.TabWidth}
var buf bytes.Buffer
err = printConfig.Fprint(&buf, fileSet, file)
if err != nil {
return nil, err
}
out := buf.Bytes()
if adjust != nil {
out = adjust(src, out)
}
if len(spacesBefore) > 0 {
out = addImportSpaces(bytes.NewReader(out), spacesBefore)
}
out, err = format.Source(out)
if err != nil {
return nil, err
}
return out, nil
}
// parse parses src, which was read from filename,
// as a Go source file or statement list.
func parse(fset *token.FileSet, filename string, src []byte, opt *Options) (*ast.File, func(orig, src []byte) []byte, error) {
parserMode := parser.Mode(0)
if opt.Comments {
parserMode |= parser.ParseComments
}
if opt.AllErrors {
parserMode |= parser.AllErrors
}
// Try as whole source file.
file, err := parser.ParseFile(fset, filename, src, parserMode)
if err == nil {
return file, nil, nil
}
// If the error is that the source file didn't begin with a
// package line and we accept fragmented input, fall through to
// try as a source fragment. Stop and return on any other error.
if !opt.Fragment || !strings.Contains(err.Error(), "expected 'package'") {
return nil, nil, err
}
// If this is a declaration list, make it a source file
// by inserting a package clause.
// Insert using a ;, not a newline, so that the line numbers
// in psrc match the ones in src.
psrc := append([]byte("package main;"), src...)
file, err = parser.ParseFile(fset, filename, psrc, parserMode)
if err == nil {
// If a main function exists, we will assume this is a main
// package and leave the file.
if containsMainFunc(file) {
return file, nil, nil
}
adjust := func(orig, src []byte) []byte {
// Remove the package clause.
// Gofmt has turned the ; into a \n.
src = src[len("package main\n"):]
return matchSpace(orig, src)
}
return file, adjust, nil
}
// If the error is that the source file didn't begin with a
// declaration, fall through to try as a statement list.
// Stop and return on any other error.
if !strings.Contains(err.Error(), "expected declaration") {
return nil, nil, err
}
// If this is a statement list, make it a source file
// by inserting a package clause and turning the list
// into a function body. This handles expressions too.
// Insert using a ;, not a newline, so that the line numbers
// in fsrc match the ones in src.
fsrc := append(append([]byte("package p; func _() {"), src...), '}')
file, err = parser.ParseFile(fset, filename, fsrc, parserMode)
if err == nil {
adjust := func(orig, src []byte) []byte {
// Remove the wrapping.
// Gofmt has turned the ; into a \n\n.
src = src[len("package p\n\nfunc _() {"):]
src = src[:len(src)-len("}\n")]
// Gofmt has also indented the function body one level.
// Remove that indent.
src = bytes.Replace(src, []byte("\n\t"), []byte("\n"), -1)
return matchSpace(orig, src)
}
return file, adjust, nil
}
// Failed, and out of options.
return nil, nil, err
}
// containsMainFunc checks if a file contains a function declaration with the
// function signature 'func main()'
func containsMainFunc(file *ast.File) bool {
for _, decl := range file.Decls {
if f, ok := decl.(*ast.FuncDecl); ok {
if f.Name.Name != "main" {
continue
}
if len(f.Type.Params.List) != 0 {
continue
}
if f.Type.Results != nil && len(f.Type.Results.List) != 0 {
continue
}
return true
}
}
return false
}
func cutSpace(b []byte) (before, middle, after []byte) {
i := 0
for i < len(b) && (b[i] == ' ' || b[i] == '\t' || b[i] == '\n') {
i++
}
j := len(b)
for j > 0 && (b[j-1] == ' ' || b[j-1] == '\t' || b[j-1] == '\n') {
j--
}
if i <= j {
return b[:i], b[i:j], b[j:]
}
return nil, nil, b[j:]
}
// matchSpace reformats src to use the same space context as orig.
// 1) If orig begins with blank lines, matchSpace inserts them at the beginning of src.
// 2) matchSpace copies the indentation of the first non-blank line in orig
// to every non-blank line in src.
// 3) matchSpace copies the trailing space from orig and uses it in place
// of src's trailing space.
func matchSpace(orig []byte, src []byte) []byte {
before, _, after := cutSpace(orig)
i := bytes.LastIndex(before, []byte{'\n'})
before, indent := before[:i+1], before[i+1:]
_, src, _ = cutSpace(src)
var b bytes.Buffer
b.Write(before)
for len(src) > 0 {
line := src
if i := bytes.IndexByte(line, '\n'); i >= 0 {
line, src = line[:i+1], line[i+1:]
} else {
src = nil
}
if len(line) > 0 && line[0] != '\n' { // not blank
b.Write(indent)
}
b.Write(line)
}
b.Write(after)
return b.Bytes()
}
var impLine = regexp.MustCompile(`^\s+(?:[\w\.]+\s+)?"(.+)"`)
func addImportSpaces(r io.Reader, breaks []string) []byte {
var out bytes.Buffer
sc := bufio.NewScanner(r)
inImports := false
done := false
for sc.Scan() {
s := sc.Text()
if !inImports && !done && strings.HasPrefix(s, "import") {
inImports = true
}
if inImports && (strings.HasPrefix(s, "var") ||
strings.HasPrefix(s, "func") ||
strings.HasPrefix(s, "const") ||
strings.HasPrefix(s, "type")) {
done = true
inImports = false
}
if inImports && len(breaks) > 0 {
if m := impLine.FindStringSubmatch(s); m != nil {
if m[1] == breaks[0] {
out.WriteByte('\n')
breaks = breaks[1:]
}
}
}
fmt.Fprintln(&out, s)
}
return out.Bytes()
}

173
vendor/golang.org/x/tools/imports/mkindex.go generated vendored
View File

@ -1,173 +0,0 @@
// +build ignore
// Copyright 2013 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.
// Command mkindex creates the file "pkgindex.go" containing an index of the Go
// standard library. The file is intended to be built as part of the imports
// package, so that the package may be used in environments where a GOROOT is
// not available (such as App Engine).
package main
import (
"bytes"
"fmt"
"go/ast"
"go/build"
"go/format"
"go/parser"
"go/token"
"io/ioutil"
"log"
"os"
"path"
"path/filepath"
"strings"
)
var (
pkgIndex = make(map[string][]pkg)
exports = make(map[string]map[string]bool)
)
func main() {
// Don't use GOPATH.
ctx := build.Default
ctx.GOPATH = ""
// Populate pkgIndex global from GOROOT.
for _, path := range ctx.SrcDirs() {
f, err := os.Open(path)
if err != nil {
log.Print(err)
continue
}
children, err := f.Readdir(-1)
f.Close()
if err != nil {
log.Print(err)
continue
}
for _, child := range children {
if child.IsDir() {
loadPkg(path, child.Name())
}
}
}
// Populate exports global.
for _, ps := range pkgIndex {
for _, p := range ps {
e := loadExports(p.dir)
if e != nil {
exports[p.dir] = e
}
}
}
// Construct source file.
var buf bytes.Buffer
fmt.Fprint(&buf, pkgIndexHead)
fmt.Fprintf(&buf, "var pkgIndexMaster = %#v\n", pkgIndex)
fmt.Fprintf(&buf, "var exportsMaster = %#v\n", exports)
src := buf.Bytes()
// Replace main.pkg type name with pkg.
src = bytes.Replace(src, []byte("main.pkg"), []byte("pkg"), -1)
// Replace actual GOROOT with "/go".
src = bytes.Replace(src, []byte(ctx.GOROOT), []byte("/go"), -1)
// Add some line wrapping.
src = bytes.Replace(src, []byte("}, "), []byte("},\n"), -1)
src = bytes.Replace(src, []byte("true, "), []byte("true,\n"), -1)
var err error
src, err = format.Source(src)
if err != nil {
log.Fatal(err)
}
// Write out source file.
err = ioutil.WriteFile("pkgindex.go", src, 0644)
if err != nil {
log.Fatal(err)
}
}
const pkgIndexHead = `package imports
func init() {
pkgIndexOnce.Do(func() {
pkgIndex.m = pkgIndexMaster
})
loadExports = func(dir string) map[string]bool {
return exportsMaster[dir]
}
}
`
type pkg struct {
importpath string // full pkg import path, e.g. "net/http"
dir string // absolute file path to pkg directory e.g. "/usr/lib/go/src/fmt"
}
var fset = token.NewFileSet()
func loadPkg(root, importpath string) {
shortName := path.Base(importpath)
if shortName == "testdata" {
return
}
dir := filepath.Join(root, importpath)
pkgIndex[shortName] = append(pkgIndex[shortName], pkg{
importpath: importpath,
dir: dir,
})
pkgDir, err := os.Open(dir)
if err != nil {
return
}
children, err := pkgDir.Readdir(-1)
pkgDir.Close()
if err != nil {
return
}
for _, child := range children {
name := child.Name()
if name == "" {
continue
}
if c := name[0]; c == '.' || ('0' <= c && c <= '9') {
continue
}
if child.IsDir() {
loadPkg(root, filepath.Join(importpath, name))
}
}
}
func loadExports(dir string) map[string]bool {
exports := make(map[string]bool)
buildPkg, err := build.ImportDir(dir, 0)
if err != nil {
if strings.Contains(err.Error(), "no buildable Go source files in") {
return nil
}
log.Printf("could not import %q: %v", dir, err)
return nil
}
for _, file := range buildPkg.GoFiles {
f, err := parser.ParseFile(fset, filepath.Join(dir, file), nil, 0)
if err != nil {
log.Printf("could not parse %q: %v", file, err)
continue
}
for name := range f.Scope.Objects {
if ast.IsExported(name) {
exports[name] = true
}
}
}
return exports
}

103
vendor/golang.org/x/tools/imports/mkstdlib.go generated vendored
View File

@ -1,103 +0,0 @@
// +build ignore
// mkstdlib generates the zstdlib.go file, containing the Go standard
// library API symbols. It's baked into the binary to avoid scanning
// GOPATH in the common case.
package main
import (
"bufio"
"bytes"
"fmt"
"go/format"
"io"
"io/ioutil"
"log"
"os"
"path"
"path/filepath"
"regexp"
"sort"
"strings"
)
func mustOpen(name string) io.Reader {
f, err := os.Open(name)
if err != nil {
log.Fatal(err)
}
return f
}
func api(base string) string {
return filepath.Join(os.Getenv("GOROOT"), "api", base)
}
var sym = regexp.MustCompile(`^pkg (\S+).*?, (?:var|func|type|const) ([A-Z]\w*)`)
func main() {
var buf bytes.Buffer
outf := func(format string, args ...interface{}) {
fmt.Fprintf(&buf, format, args...)
}
outf("// AUTO-GENERATED BY mkstdlib.go\n\n")
outf("package imports\n")
outf("var stdlib = map[string]string{\n")
f := io.MultiReader(
mustOpen(api("go1.txt")),
mustOpen(api("go1.1.txt")),
mustOpen(api("go1.2.txt")),
mustOpen(api("go1.3.txt")),
mustOpen(api("go1.4.txt")),
mustOpen(api("go1.5.txt")),
mustOpen(api("go1.6.txt")),
mustOpen(api("go1.7.txt")),
)
sc := bufio.NewScanner(f)
fullImport := map[string]string{} // "zip.NewReader" => "archive/zip"
ambiguous := map[string]bool{}
var keys []string
for sc.Scan() {
l := sc.Text()
has := func(v string) bool { return strings.Contains(l, v) }
if has("struct, ") || has("interface, ") || has(", method (") {
continue
}
if m := sym.FindStringSubmatch(l); m != nil {
full := m[1]
key := path.Base(full) + "." + m[2]
if exist, ok := fullImport[key]; ok {
if exist != full {
ambiguous[key] = true
}
} else {
fullImport[key] = full
keys = append(keys, key)
}
}
}
if err := sc.Err(); err != nil {
log.Fatal(err)
}
sort.Strings(keys)
for _, key := range keys {
if ambiguous[key] {
outf("\t// %q is ambiguous\n", key)
} else {
outf("\t%q: %q,\n", key, fullImport[key])
}
}
outf("\n")
for _, sym := range [...]string{"Alignof", "ArbitraryType", "Offsetof", "Pointer", "Sizeof"} {
outf("\t%q: %q,\n", "unsafe."+sym, "unsafe")
}
outf("}\n")
fmtbuf, err := format.Source(buf.Bytes())
if err != nil {
log.Fatal(err)
}
err = ioutil.WriteFile("zstdlib.go", fmtbuf, 0666)
if err != nil {
log.Fatal(err)
}
}

212
vendor/golang.org/x/tools/imports/sortimports.go generated vendored
View File

@ -1,212 +0,0 @@
// Copyright 2013 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.
// Hacked up copy of go/ast/import.go
package imports
import (
"go/ast"
"go/token"
"sort"
"strconv"
)
// sortImports sorts runs of consecutive import lines in import blocks in f.
// It also removes duplicate imports when it is possible to do so without data loss.
func sortImports(fset *token.FileSet, f *ast.File) {
for i, d := range f.Decls {
d, ok := d.(*ast.GenDecl)
if !ok || d.Tok != token.IMPORT {
// Not an import declaration, so we're done.
// Imports are always first.
break
}
if len(d.Specs) == 0 {
// Empty import block, remove it.
f.Decls = append(f.Decls[:i], f.Decls[i+1:]...)
}
if !d.Lparen.IsValid() {
// Not a block: sorted by default.
continue
}
// Identify and sort runs of specs on successive lines.
i := 0
specs := d.Specs[:0]
for j, s := range d.Specs {
if j > i && fset.Position(s.Pos()).Line > 1+fset.Position(d.Specs[j-1].End()).Line {
// j begins a new run. End this one.
specs = append(specs, sortSpecs(fset, f, d.Specs[i:j])...)
i = j
}
}
specs = append(specs, sortSpecs(fset, f, d.Specs[i:])...)
d.Specs = specs
// Deduping can leave a blank line before the rparen; clean that up.
if len(d.Specs) > 0 {
lastSpec := d.Specs[len(d.Specs)-1]
lastLine := fset.Position(lastSpec.Pos()).Line
if rParenLine := fset.Position(d.Rparen).Line; rParenLine > lastLine+1 {
fset.File(d.Rparen).MergeLine(rParenLine - 1)
}
}
}
}
func importPath(s ast.Spec) string {
t, err := strconv.Unquote(s.(*ast.ImportSpec).Path.Value)
if err == nil {
return t
}
return ""
}
func importName(s ast.Spec) string {
n := s.(*ast.ImportSpec).Name
if n == nil {
return ""
}
return n.Name
}
func importComment(s ast.Spec) string {
c := s.(*ast.ImportSpec).Comment
if c == nil {
return ""
}
return c.Text()
}
// collapse indicates whether prev may be removed, leaving only next.
func collapse(prev, next ast.Spec) bool {
if importPath(next) != importPath(prev) || importName(next) != importName(prev) {
return false
}
return prev.(*ast.ImportSpec).Comment == nil
}
type posSpan struct {
Start token.Pos
End token.Pos
}
func sortSpecs(fset *token.FileSet, f *ast.File, specs []ast.Spec) []ast.Spec {
// Can't short-circuit here even if specs are already sorted,
// since they might yet need deduplication.
// A lone import, however, may be safely ignored.
if len(specs) <= 1 {
return specs
}
// Record positions for specs.
pos := make([]posSpan, len(specs))
for i, s := range specs {
pos[i] = posSpan{s.Pos(), s.End()}
}
// Identify comments in this range.
// Any comment from pos[0].Start to the final line counts.
lastLine := fset.Position(pos[len(pos)-1].End).Line
cstart := len(f.Comments)
cend := len(f.Comments)
for i, g := range f.Comments {
if g.Pos() < pos[0].Start {
continue
}
if i < cstart {
cstart = i
}
if fset.Position(g.End()).Line > lastLine {
cend = i
break
}
}
comments := f.Comments[cstart:cend]
// Assign each comment to the import spec preceding it.
importComment := map[*ast.ImportSpec][]*ast.CommentGroup{}
specIndex := 0
for _, g := range comments {
for specIndex+1 < len(specs) && pos[specIndex+1].Start <= g.Pos() {
specIndex++
}
s := specs[specIndex].(*ast.ImportSpec)
importComment[s] = append(importComment[s], g)
}
// Sort the import specs by import path.
// Remove duplicates, when possible without data loss.
// Reassign the import paths to have the same position sequence.
// Reassign each comment to abut the end of its spec.
// Sort the comments by new position.
sort.Sort(byImportSpec(specs))
// Dedup. Thanks to our sorting, we can just consider
// adjacent pairs of imports.
deduped := specs[:0]
for i, s := range specs {
if i == len(specs)-1 || !collapse(s, specs[i+1]) {
deduped = append(deduped, s)
} else {
p := s.Pos()
fset.File(p).MergeLine(fset.Position(p).Line)
}
}
specs = deduped
// Fix up comment positions
for i, s := range specs {
s := s.(*ast.ImportSpec)
if s.Name != nil {
s.Name.NamePos = pos[i].Start
}
s.Path.ValuePos = pos[i].Start
s.EndPos = pos[i].End
for _, g := range importComment[s] {
for _, c := range g.List {
c.Slash = pos[i].End
}
}
}
sort.Sort(byCommentPos(comments))
return specs
}
type byImportSpec []ast.Spec // slice of *ast.ImportSpec
func (x byImportSpec) Len() int { return len(x) }
func (x byImportSpec) Swap(i, j int) { x[i], x[j] = x[j], x[i] }
func (x byImportSpec) Less(i, j int) bool {
ipath := importPath(x[i])
jpath := importPath(x[j])
igroup := importGroup(ipath)
jgroup := importGroup(jpath)
if igroup != jgroup {
return igroup < jgroup
}
if ipath != jpath {
return ipath < jpath
}
iname := importName(x[i])
jname := importName(x[j])
if iname != jname {
return iname < jname
}
return importComment(x[i]) < importComment(x[j])
}
type byCommentPos []*ast.CommentGroup
func (x byCommentPos) Len() int { return len(x) }
func (x byCommentPos) Swap(i, j int) { x[i], x[j] = x[j], x[i] }
func (x byCommentPos) Less(i, j int) bool { return x[i].Pos() < x[j].Pos() }

9289
vendor/golang.org/x/tools/imports/zstdlib.go generated vendored
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File diff suppressed because it is too large Load Diff

6
vendor/vendor.json vendored
View File

@ -880,12 +880,6 @@
"revision": "be0fcc31ae2332374e800dfff29b721c585b35df",
"revisionTime": "2016-11-04T18:56:24Z"
},
{
"checksumSHA1": "2ko3hvt1vrfwG+p7SLW+zqDEeV4=",
"path": "golang.org/x/tools/imports",
"revision": "be0fcc31ae2332374e800dfff29b721c585b35df",
"revisionTime": "2016-11-04T18:56:24Z"
},
{
"checksumSHA1": "CEFTYXtWmgSh+3Ik1NmDaJcz4E0=",
"path": "gopkg.in/check.v1",