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cmd/gotype: delete this command in favor of go/types/gotype.go in the std lib 

Change-Id: Ifd03e5ec607ff127ab11c307d99877de81aeacf2
Reviewed-on: https://go-review.googlesource.com/37657
Reviewed-by: Paul Jolly <paul@myitcv.org.uk>
Reviewed-by: Alan Donovan <adonovan@google.com>
This commit is contained in:
Robert Griesemer 2017-03-01 17:21:00 -08:00
parent 7a49e427c8
commit f5a6ee1ea9
2 changed files with 0 additions and 354 deletions
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62
cmd/gotype/doc.go
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@ -1,62 +0,0 @@
// Copyright 2011 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.
/*
The gotype command does syntactic and semantic analysis of Go files
and packages like the front-end of a Go compiler. Errors are reported
if the analysis fails; otherwise gotype is quiet (unless -v is set).
Without a list of paths, gotype reads from standard input, which
must provide a single Go source file defining a complete package.
If a single path is specified that is a directory, gotype checks
the Go files in that directory; they must all belong to the same
package.
Otherwise, each path must be the filename of Go file belonging to
the same package.
Usage:
gotype [flags] [path...]
The flags are:
-a
use all (incl. _test.go) files when processing a directory
-e
report all errors (not just the first 10)
-v
verbose mode
-gccgo
use gccimporter instead of gcimporter
Debugging flags:
-seq
parse sequentially, rather than in parallel
-ast
print AST (forces -seq)
-trace
print parse trace (forces -seq)
-comments
parse comments (ignored unless -ast or -trace is provided)
Examples:
To check the files a.go, b.go, and c.go:
gotype a.go b.go c.go
To check an entire package in the directory dir and print the processed files:
gotype -v dir
To check an entire package including tests in the local directory:
gotype -a .
To verify the output of a pipe:
echo "package foo" | gotype
*/
package main // import "golang.org/x/tools/cmd/gotype"

292
cmd/gotype/gotype.go
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@ -1,292 +0,0 @@
// Copyright 2011 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 main
import (
"flag"
"fmt"
"go/ast"
"go/build"
"go/importer"
"go/parser"
"go/scanner"
"go/token"
"go/types"
"io/ioutil"
"os"
"path/filepath"
"time"
)
var (
// main operation modes
allFiles = flag.Bool("a", false, "use all (incl. _test.go) files when processing a directory")
allErrors = flag.Bool("e", false, "report all errors (not just the first 10)")
verbose = flag.Bool("v", false, "verbose mode")
gccgo = flag.Bool("gccgo", false, "use gccgoimporter instead of gcimporter")
// debugging support
sequential = flag.Bool("seq", false, "parse sequentially, rather than in parallel")
printAST = flag.Bool("ast", false, "print AST (forces -seq)")
printTrace = flag.Bool("trace", false, "print parse trace (forces -seq)")
parseComments = flag.Bool("comments", false, "parse comments (ignored unless -ast or -trace is provided)")
)
var (
fset = token.NewFileSet()
errorCount = 0
parserMode parser.Mode
sizes types.Sizes
)
func initParserMode() {
if *allErrors {
parserMode |= parser.AllErrors
}
if *printTrace {
parserMode |= parser.Trace
}
if *parseComments && (*printAST || *printTrace) {
parserMode |= parser.ParseComments
}
}
func initSizes() {
wordSize := 8
maxAlign := 8
switch build.Default.GOARCH {
case "386", "arm":
wordSize = 4
maxAlign = 4
// add more cases as needed
}
sizes = &types.StdSizes{WordSize: int64(wordSize), MaxAlign: int64(maxAlign)}
}
func usage() {
fmt.Fprintln(os.Stderr, "usage: gotype [flags] [path ...]")
fmt.Fprintln(os.Stderr, "")
fmt.Fprintln(os.Stderr, "If no path is provided, gotype processes stdin.")
fmt.Fprintln(os.Stderr, "")
fmt.Fprintln(os.Stderr, "If a single directory is provided, gotype processes files in that directory.")
fmt.Fprintln(os.Stderr, "If the -a flag is provided gotype also processes the _test.go files in the directory.")
fmt.Fprintln(os.Stderr, "If the directory contains an xtest package, gotype -a will separately process the xtest")
fmt.Fprintln(os.Stderr, "package (it assumes the package itself is installed).")
fmt.Fprintln(os.Stderr, "")
fmt.Fprintln(os.Stderr, "Otherwise, the paths are processed as files belonging to the same package.")
fmt.Fprintln(os.Stderr, "")
flag.PrintDefaults()
os.Exit(2)
}
func report(err error) {
scanner.PrintError(os.Stderr, err)
if list, ok := err.(scanner.ErrorList); ok {
errorCount += len(list)
return
}
errorCount++
}
// parse may be called concurrently
func parse(filename string, src interface{}) (*ast.File, error) {
if *verbose {
fmt.Println(filename)
}
file, err := parser.ParseFile(fset, filename, src, parserMode) // ok to access fset concurrently
if *printAST {
ast.Print(fset, file)
}
return file, err
}
func parseStdin() (*ast.File, error) {
src, err := ioutil.ReadAll(os.Stdin)
if err != nil {
return nil, err
}
return parse("<standard input>", src)
}
func parseFiles(filenames []string) ([]*ast.File, error) {
files := make([]*ast.File, len(filenames))
if *sequential {
for i, filename := range filenames {
var err error
files[i], err = parse(filename, nil)
if err != nil {
return nil, err // leave unfinished goroutines hanging
}
}
} else {
type parseResult struct {
file *ast.File
err error
}
out := make(chan parseResult)
for _, filename := range filenames {
go func(filename string) {
file, err := parse(filename, nil)
out <- parseResult{file, err}
}(filename)
}
for i := range filenames {
res := <-out
if res.err != nil {
return nil, res.err // leave unfinished goroutines hanging
}
files[i] = res.file
}
}
return files, nil
}
func parseDir(dirname string) (files, xfiles []*ast.File, err error) {
ctxt := build.Default
pkginfo, err := ctxt.ImportDir(dirname, 0)
if _, nogo := err.(*build.NoGoError); err != nil && !nogo {
return
}
filenames := append(pkginfo.GoFiles, pkginfo.CgoFiles...)
if *allFiles {
filenames = append(filenames, pkginfo.TestGoFiles...)
}
var xfilenames []string
if *allFiles {
xfilenames = pkginfo.XTestGoFiles
}
// complete file names
for i, filename := range filenames {
filenames[i] = filepath.Join(dirname, filename)
}
for i, filename := range xfilenames {
xfilenames[i] = filepath.Join(dirname, filename)
}
if files, err = parseFiles(filenames); err != nil {
return
}
xfiles, err = parseFiles(xfilenames)
return
}
func getPkgFiles(args []string) (files, xfiles []*ast.File, err error) {
if len(args) == 0 {
// stdin
file, err := parseStdin()
if err != nil {
return nil, nil, err
}
return []*ast.File{file}, nil, nil
}
if len(args) == 1 {
// possibly a directory
path := args[0]
var info os.FileInfo
info, err = os.Stat(path)
if err != nil {
return
}
if info.IsDir() {
return parseDir(path)
}
}
// list of files
files, err = parseFiles(args)
return
}
func checkPkgFiles(files []*ast.File) {
compiler := "gc"
if *gccgo {
compiler = "gccgo"
}
type bailout struct{}
conf := types.Config{
FakeImportC: true,
Error: func(err error) {
if !*allErrors && errorCount >= 10 {
panic(bailout{})
}
report(err)
},
Importer: importer.For(compiler, nil),
Sizes: sizes,
}
defer func() {
switch p := recover().(type) {
case nil, bailout:
// normal return or early exit
default:
// re-panic
panic(p)
}
}()
const path = "pkg" // any non-empty string will do for now
conf.Check(path, fset, files, nil)
}
func printStats(d time.Duration) {
fileCount := 0
lineCount := 0
fset.Iterate(func(f *token.File) bool {
fileCount++
lineCount += f.LineCount()
return true
})
fmt.Printf(
"%s (%d files, %d lines, %d lines/s)\n",
d, fileCount, lineCount, int64(float64(lineCount)/d.Seconds()),
)
}
func main() {
flag.Usage = usage
flag.Parse()
if *printAST || *printTrace {
*sequential = true
}
initParserMode()
initSizes()
start := time.Now()
files, xfiles, err := getPkgFiles(flag.Args())
if err != nil {
report(err)
os.Exit(2)
}
if len(files) > 0 {
checkPkgFiles(files)
if errorCount > 0 {
os.Exit(2)
}
}
if len(xfiles) > 0 {
checkPkgFiles(xfiles)
if errorCount > 0 {
os.Exit(2)
}
}
if *verbose {
printStats(time.Since(start))
}
}