vendor: include source for tools

This change vendors the source for all our build, formatting, and
linting tools. Generated by running "dep ensure".

24 files changed, 9270 insertions, 0 deletions

diff --git a/vendor/github.com/golang/lint/LICENSE b/vendor/github.com/golang/lint/LICENSE
new file mode 100644
index 0000000..65d761b
--- /dev/null
+++ b/vendor/github.com/golang/lint/LICENSE
@@ -0,0 +1,27 @@
+Copyright (c) 2013 The Go Authors. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+   * Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+   * Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the following disclaimer
+in the documentation and/or other materials provided with the
+distribution.
+   * Neither the name of Google Inc. nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/vendor/github.com/golang/lint/golint/golint.go b/vendor/github.com/golang/lint/golint/golint.go
new file mode 100644
index 0000000..d8360ad
--- /dev/null
+++ b/vendor/github.com/golang/lint/golint/golint.go
@@ -0,0 +1,159 @@
+// Copyright (c) 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 or at
+// https://developers.google.com/open-source/licenses/bsd.
+
+// golint lints the Go source files named on its command line.
+package main
+
+import (
+	"flag"
+	"fmt"
+	"go/build"
+	"io/ioutil"
+	"os"
+	"path/filepath"
+	"strings"
+
+	"github.com/golang/lint"
+)
+
+var (
+	minConfidence = flag.Float64("min_confidence", 0.8, "minimum confidence of a problem to print it")
+	setExitStatus = flag.Bool("set_exit_status", false, "set exit status to 1 if any issues are found")
+	suggestions   int
+)
+
+func usage() {
+	fmt.Fprintf(os.Stderr, "Usage of %s:\n", os.Args[0])
+	fmt.Fprintf(os.Stderr, "\tgolint [flags] # runs on package in current directory\n")
+	fmt.Fprintf(os.Stderr, "\tgolint [flags] [packages]\n")
+	fmt.Fprintf(os.Stderr, "\tgolint [flags] [directories] # where a '/...' suffix includes all sub-directories\n")
+	fmt.Fprintf(os.Stderr, "\tgolint [flags] [files] # all must belong to a single package\n")
+	fmt.Fprintf(os.Stderr, "Flags:\n")
+	flag.PrintDefaults()
+}
+
+func main() {
+	flag.Usage = usage
+	flag.Parse()
+
+	if flag.NArg() == 0 {
+		lintDir(".")
+	} else {
+		// dirsRun, filesRun, and pkgsRun indicate whether golint is applied to
+		// directory, file or package targets. The distinction affects which
+		// checks are run. It is no valid to mix target types.
+		var dirsRun, filesRun, pkgsRun int
+		var args []string
+		for _, arg := range flag.Args() {
+			if strings.HasSuffix(arg, "/...") && isDir(arg[:len(arg)-len("/...")]) {
+				dirsRun = 1
+				for _, dirname := range allPackagesInFS(arg) {
+					args = append(args, dirname)
+				}
+			} else if isDir(arg) {
+				dirsRun = 1
+				args = append(args, arg)
+			} else if exists(arg) {
+				filesRun = 1
+				args = append(args, arg)
+			} else {
+				pkgsRun = 1
+				args = append(args, arg)
+			}
+		}
+
+		if dirsRun+filesRun+pkgsRun != 1 {
+			usage()
+			os.Exit(2)
+		}
+		switch {
+		case dirsRun == 1:
+			for _, dir := range args {
+				lintDir(dir)
+			}
+		case filesRun == 1:
+			lintFiles(args...)
+		case pkgsRun == 1:
+			for _, pkg := range importPaths(args) {
+				lintPackage(pkg)
+			}
+		}
+	}
+
+	if *setExitStatus && suggestions > 0 {
+		fmt.Fprintf(os.Stderr, "Found %d lint suggestions; failing.\n", suggestions)
+		os.Exit(1)
+	}
+}
+
+func isDir(filename string) bool {
+	fi, err := os.Stat(filename)
+	return err == nil && fi.IsDir()
+}
+
+func exists(filename string) bool {
+	_, err := os.Stat(filename)
+	return err == nil
+}
+
+func lintFiles(filenames ...string) {
+	files := make(map[string][]byte)
+	for _, filename := range filenames {
+		src, err := ioutil.ReadFile(filename)
+		if err != nil {
+			fmt.Fprintln(os.Stderr, err)
+			continue
+		}
+		files[filename] = src
+	}
+
+	l := new(lint.Linter)
+	ps, err := l.LintFiles(files)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "%v\n", err)
+		return
+	}
+	for _, p := range ps {
+		if p.Confidence >= *minConfidence {
+			fmt.Printf("%v: %s\n", p.Position, p.Text)
+			suggestions++
+		}
+	}
+}
+
+func lintDir(dirname string) {
+	pkg, err := build.ImportDir(dirname, 0)
+	lintImportedPackage(pkg, err)
+}
+
+func lintPackage(pkgname string) {
+	pkg, err := build.Import(pkgname, ".", 0)
+	lintImportedPackage(pkg, err)
+}
+
+func lintImportedPackage(pkg *build.Package, err error) {
+	if err != nil {
+		if _, nogo := err.(*build.NoGoError); nogo {
+			// Don't complain if the failure is due to no Go source files.
+			return
+		}
+		fmt.Fprintln(os.Stderr, err)
+		return
+	}
+
+	var files []string
+	files = append(files, pkg.GoFiles...)
+	files = append(files, pkg.CgoFiles...)
+	files = append(files, pkg.TestGoFiles...)
+	if pkg.Dir != "." {
+		for i, f := range files {
+			files[i] = filepath.Join(pkg.Dir, f)
+		}
+	}
+	// TODO(dsymonds): Do foo_test too (pkg.XTestGoFiles)
+
+	lintFiles(files...)
+}
diff --git a/vendor/github.com/golang/lint/golint/import.go b/vendor/github.com/golang/lint/golint/import.go
new file mode 100644
index 0000000..02a0daa
--- /dev/null
+++ b/vendor/github.com/golang/lint/golint/import.go
@@ -0,0 +1,310 @@
+package main
+
+/*
+
+This file holds a direct copy of the import path matching code of
+https://github.com/golang/go/blob/master/src/cmd/go/main.go. It can be
+replaced when https://golang.org/issue/8768 is resolved.
+
+It has been updated to follow upstream changes in a few ways.
+
+*/
+
+import (
+	"fmt"
+	"go/build"
+	"log"
+	"os"
+	"path"
+	"path/filepath"
+	"regexp"
+	"runtime"
+	"strings"
+)
+
+var buildContext = build.Default
+
+var (
+	goroot    = filepath.Clean(runtime.GOROOT())
+	gorootSrc = filepath.Join(goroot, "src")
+)
+
+// importPathsNoDotExpansion returns the import paths to use for the given
+// command line, but it does no ... expansion.
+func importPathsNoDotExpansion(args []string) []string {
+	if len(args) == 0 {
+		return []string{"."}
+	}
+	var out []string
+	for _, a := range args {
+		// Arguments are supposed to be import paths, but
+		// as a courtesy to Windows developers, rewrite \ to /
+		// in command-line arguments.  Handles .\... and so on.
+		if filepath.Separator == '\\' {
+			a = strings.Replace(a, `\`, `/`, -1)
+		}
+
+		// Put argument in canonical form, but preserve leading ./.
+		if strings.HasPrefix(a, "./") {
+			a = "./" + path.Clean(a)
+			if a == "./." {
+				a = "."
+			}
+		} else {
+			a = path.Clean(a)
+		}
+		if a == "all" || a == "std" {
+			out = append(out, allPackages(a)...)
+			continue
+		}
+		out = append(out, a)
+	}
+	return out
+}
+
+// importPaths returns the import paths to use for the given command line.
+func importPaths(args []string) []string {
+	args = importPathsNoDotExpansion(args)
+	var out []string
+	for _, a := range args {
+		if strings.Contains(a, "...") {
+			if build.IsLocalImport(a) {
+				out = append(out, allPackagesInFS(a)...)
+			} else {
+				out = append(out, allPackages(a)...)
+			}
+			continue
+		}
+		out = append(out, a)
+	}
+	return out
+}
+
+// matchPattern(pattern)(name) reports whether
+// name matches pattern.  Pattern is a limited glob
+// pattern in which '...' means 'any string' and there
+// is no other special syntax.
+func matchPattern(pattern string) func(name string) bool {
+	re := regexp.QuoteMeta(pattern)
+	re = strings.Replace(re, `\.\.\.`, `.*`, -1)
+	// Special case: foo/... matches foo too.
+	if strings.HasSuffix(re, `/.*`) {
+		re = re[:len(re)-len(`/.*`)] + `(/.*)?`
+	}
+	reg := regexp.MustCompile(`^` + re + `$`)
+	return func(name string) bool {
+		return reg.MatchString(name)
+	}
+}
+
+// hasPathPrefix reports whether the path s begins with the
+// elements in prefix.
+func hasPathPrefix(s, prefix string) bool {
+	switch {
+	default:
+		return false
+	case len(s) == len(prefix):
+		return s == prefix
+	case len(s) > len(prefix):
+		if prefix != "" && prefix[len(prefix)-1] == '/' {
+			return strings.HasPrefix(s, prefix)
+		}
+		return s[len(prefix)] == '/' && s[:len(prefix)] == prefix
+	}
+}
+
+// treeCanMatchPattern(pattern)(name) reports whether
+// name or children of name can possibly match pattern.
+// Pattern is the same limited glob accepted by matchPattern.
+func treeCanMatchPattern(pattern string) func(name string) bool {
+	wildCard := false
+	if i := strings.Index(pattern, "..."); i >= 0 {
+		wildCard = true
+		pattern = pattern[:i]
+	}
+	return func(name string) bool {
+		return len(name) <= len(pattern) && hasPathPrefix(pattern, name) ||
+			wildCard && strings.HasPrefix(name, pattern)
+	}
+}
+
+// allPackages returns all the packages that can be found
+// under the $GOPATH directories and $GOROOT matching pattern.
+// The pattern is either "all" (all packages), "std" (standard packages)
+// or a path including "...".
+func allPackages(pattern string) []string {
+	pkgs := matchPackages(pattern)
+	if len(pkgs) == 0 {
+		fmt.Fprintf(os.Stderr, "warning: %q matched no packages\n", pattern)
+	}
+	return pkgs
+}
+
+func matchPackages(pattern string) []string {
+	match := func(string) bool { return true }
+	treeCanMatch := func(string) bool { return true }
+	if pattern != "all" && pattern != "std" {
+		match = matchPattern(pattern)
+		treeCanMatch = treeCanMatchPattern(pattern)
+	}
+
+	have := map[string]bool{
+		"builtin": true, // ignore pseudo-package that exists only for documentation
+	}
+	if !buildContext.CgoEnabled {
+		have["runtime/cgo"] = true // ignore during walk
+	}
+	var pkgs []string
+
+	// Commands
+	cmd := filepath.Join(goroot, "src/cmd") + string(filepath.Separator)
+	filepath.Walk(cmd, func(path string, fi os.FileInfo, err error) error {
+		if err != nil || !fi.IsDir() || path == cmd {
+			return nil
+		}
+		name := path[len(cmd):]
+		if !treeCanMatch(name) {
+			return filepath.SkipDir
+		}
+		// Commands are all in cmd/, not in subdirectories.
+		if strings.Contains(name, string(filepath.Separator)) {
+			return filepath.SkipDir
+		}
+
+		// We use, e.g., cmd/gofmt as the pseudo import path for gofmt.
+		name = "cmd/" + name
+		if have[name] {
+			return nil
+		}
+		have[name] = true
+		if !match(name) {
+			return nil
+		}
+		_, err = buildContext.ImportDir(path, 0)
+		if err != nil {
+			if _, noGo := err.(*build.NoGoError); !noGo {
+				log.Print(err)
+			}
+			return nil
+		}
+		pkgs = append(pkgs, name)
+		return nil
+	})
+
+	for _, src := range buildContext.SrcDirs() {
+		if (pattern == "std" || pattern == "cmd") && src != gorootSrc {
+			continue
+		}
+		src = filepath.Clean(src) + string(filepath.Separator)
+		root := src
+		if pattern == "cmd" {
+			root += "cmd" + string(filepath.Separator)
+		}
+		filepath.Walk(root, func(path string, fi os.FileInfo, err error) error {
+			if err != nil || !fi.IsDir() || path == src {
+				return nil
+			}
+
+			// Avoid .foo, _foo, and testdata directory trees.
+			_, elem := filepath.Split(path)
+			if strings.HasPrefix(elem, ".") || strings.HasPrefix(elem, "_") || elem == "testdata" {
+				return filepath.SkipDir
+			}
+
+			name := filepath.ToSlash(path[len(src):])
+			if pattern == "std" && (strings.Contains(name, ".") || name == "cmd") {
+				// The name "std" is only the standard library.
+				// If the name is cmd, it's the root of the command tree.
+				return filepath.SkipDir
+			}
+			if !treeCanMatch(name) {
+				return filepath.SkipDir
+			}
+			if have[name] {
+				return nil
+			}
+			have[name] = true
+			if !match(name) {
+				return nil
+			}
+			_, err = buildContext.ImportDir(path, 0)
+			if err != nil {
+				if _, noGo := err.(*build.NoGoError); noGo {
+					return nil
+				}
+			}
+			pkgs = append(pkgs, name)
+			return nil
+		})
+	}
+	return pkgs
+}
+
+// allPackagesInFS is like allPackages but is passed a pattern
+// beginning ./ or ../, meaning it should scan the tree rooted
+// at the given directory.  There are ... in the pattern too.
+func allPackagesInFS(pattern string) []string {
+	pkgs := matchPackagesInFS(pattern)
+	if len(pkgs) == 0 {
+		fmt.Fprintf(os.Stderr, "warning: %q matched no packages\n", pattern)
+	}
+	return pkgs
+}
+
+func matchPackagesInFS(pattern string) []string {
+	// Find directory to begin the scan.
+	// Could be smarter but this one optimization
+	// is enough for now, since ... is usually at the
+	// end of a path.
+	i := strings.Index(pattern, "...")
+	dir, _ := path.Split(pattern[:i])
+
+	// pattern begins with ./ or ../.
+	// path.Clean will discard the ./ but not the ../.
+	// We need to preserve the ./ for pattern matching
+	// and in the returned import paths.
+	prefix := ""
+	if strings.HasPrefix(pattern, "./") {
+		prefix = "./"
+	}
+	match := matchPattern(pattern)
+
+	var pkgs []string
+	filepath.Walk(dir, func(path string, fi os.FileInfo, err error) error {
+		if err != nil || !fi.IsDir() {
+			return nil
+		}
+		if path == dir {
+			// filepath.Walk starts at dir and recurses. For the recursive case,
+			// the path is the result of filepath.Join, which calls filepath.Clean.
+			// The initial case is not Cleaned, though, so we do this explicitly.
+			//
+			// This converts a path like "./io/" to "io". Without this step, running
+			// "cd $GOROOT/src/pkg; go list ./io/..." would incorrectly skip the io
+			// package, because prepending the prefix "./" to the unclean path would
+			// result in "././io", and match("././io") returns false.
+			path = filepath.Clean(path)
+		}
+
+		// Avoid .foo, _foo, and testdata directory trees, but do not avoid "." or "..".
+		_, elem := filepath.Split(path)
+		dot := strings.HasPrefix(elem, ".") && elem != "." && elem != ".."
+		if dot || strings.HasPrefix(elem, "_") || elem == "testdata" {
+			return filepath.SkipDir
+		}
+
+		name := prefix + filepath.ToSlash(path)
+		if !match(name) {
+			return nil
+		}
+		if _, err = build.ImportDir(path, 0); err != nil {
+			if _, noGo := err.(*build.NoGoError); !noGo {
+				log.Print(err)
+			}
+			return nil
+		}
+		pkgs = append(pkgs, name)
+		return nil
+	})
+	return pkgs
+}
diff --git a/vendor/github.com/golang/lint/lint.go b/vendor/github.com/golang/lint/lint.go
new file mode 100644
index 0000000..8bb1faa
--- /dev/null
+++ b/vendor/github.com/golang/lint/lint.go
@@ -0,0 +1,1697 @@
+// Copyright (c) 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 or at
+// https://developers.google.com/open-source/licenses/bsd.
+
+// Package lint contains a linter for Go source code.
+package lint
+
+import (
+	"bufio"
+	"bytes"
+	"fmt"
+	"go/ast"
+	"go/parser"
+	"go/printer"
+	"go/token"
+	"go/types"
+	"regexp"
+	"sort"
+	"strconv"
+	"strings"
+	"unicode"
+	"unicode/utf8"
+
+	"golang.org/x/tools/go/gcexportdata"
+)
+
+const styleGuideBase = "https://golang.org/wiki/CodeReviewComments"
+
+// A Linter lints Go source code.
+type Linter struct {
+}
+
+// Problem represents a problem in some source code.
+type Problem struct {
+	Position   token.Position // position in source file
+	Text       string         // the prose that describes the problem
+	Link       string         // (optional) the link to the style guide for the problem
+	Confidence float64        // a value in (0,1] estimating the confidence in this problem's correctness
+	LineText   string         // the source line
+	Category   string         // a short name for the general category of the problem
+
+	// If the problem has a suggested fix (the minority case),
+	// ReplacementLine is a full replacement for the relevant line of the source file.
+	ReplacementLine string
+}
+
+func (p *Problem) String() string {
+	if p.Link != "" {
+		return p.Text + "\n\n" + p.Link
+	}
+	return p.Text
+}
+
+type byPosition []Problem
+
+func (p byPosition) Len() int      { return len(p) }
+func (p byPosition) Swap(i, j int) { p[i], p[j] = p[j], p[i] }
+
+func (p byPosition) Less(i, j int) bool {
+	pi, pj := p[i].Position, p[j].Position
+
+	if pi.Filename != pj.Filename {
+		return pi.Filename < pj.Filename
+	}
+	if pi.Line != pj.Line {
+		return pi.Line < pj.Line
+	}
+	if pi.Column != pj.Column {
+		return pi.Column < pj.Column
+	}
+
+	return p[i].Text < p[j].Text
+}
+
+// Lint lints src.
+func (l *Linter) Lint(filename string, src []byte) ([]Problem, error) {
+	return l.LintFiles(map[string][]byte{filename: src})
+}
+
+// LintFiles lints a set of files of a single package.
+// The argument is a map of filename to source.
+func (l *Linter) LintFiles(files map[string][]byte) ([]Problem, error) {
+	pkg := &pkg{
+		fset:  token.NewFileSet(),
+		files: make(map[string]*file),
+	}
+	var pkgName string
+	for filename, src := range files {
+		if isGenerated(src) {
+			continue // See issue #239
+		}
+		f, err := parser.ParseFile(pkg.fset, filename, src, parser.ParseComments)
+		if err != nil {
+			return nil, err
+		}
+		if pkgName == "" {
+			pkgName = f.Name.Name
+		} else if f.Name.Name != pkgName {
+			return nil, fmt.Errorf("%s is in package %s, not %s", filename, f.Name.Name, pkgName)
+		}
+		pkg.files[filename] = &file{
+			pkg:      pkg,
+			f:        f,
+			fset:     pkg.fset,
+			src:      src,
+			filename: filename,
+		}
+	}
+	if len(pkg.files) == 0 {
+		return nil, nil
+	}
+	return pkg.lint(), nil
+}
+
+var (
+	genHdr = []byte("// Code generated ")
+	genFtr = []byte(" DO NOT EDIT.")
+)
+
+// isGenerated reports whether the source file is generated code
+// according the rules from https://golang.org/s/generatedcode.
+func isGenerated(src []byte) bool {
+	sc := bufio.NewScanner(bytes.NewReader(src))
+	for sc.Scan() {
+		b := sc.Bytes()
+		if bytes.HasPrefix(b, genHdr) && bytes.HasSuffix(b, genFtr) && len(b) >= len(genHdr)+len(genFtr) {
+			return true
+		}
+	}
+	return false
+}
+
+// pkg represents a package being linted.
+type pkg struct {
+	fset  *token.FileSet
+	files map[string]*file
+
+	typesPkg  *types.Package
+	typesInfo *types.Info
+
+	// sortable is the set of types in the package that implement sort.Interface.
+	sortable map[string]bool
+	// main is whether this is a "main" package.
+	main bool
+
+	problems []Problem
+}
+
+func (p *pkg) lint() []Problem {
+	if err := p.typeCheck(); err != nil {
+		/* TODO(dsymonds): Consider reporting these errors when golint operates on entire packages.
+		if e, ok := err.(types.Error); ok {
+			pos := p.fset.Position(e.Pos)
+			conf := 1.0
+			if strings.Contains(e.Msg, "can't find import: ") {
+				// Golint is probably being run in a context that doesn't support
+				// typechecking (e.g. package files aren't found), so don't warn about it.
+				conf = 0
+			}
+			if conf > 0 {
+				p.errorfAt(pos, conf, category("typechecking"), e.Msg)
+			}
+
+			// TODO(dsymonds): Abort if !e.Soft?
+		}
+		*/
+	}
+
+	p.scanSortable()
+	p.main = p.isMain()
+
+	for _, f := range p.files {
+		f.lint()
+	}
+
+	sort.Sort(byPosition(p.problems))
+
+	return p.problems
+}
+
+// file represents a file being linted.
+type file struct {
+	pkg      *pkg
+	f        *ast.File
+	fset     *token.FileSet
+	src      []byte
+	filename string
+}
+
+func (f *file) isTest() bool { return strings.HasSuffix(f.filename, "_test.go") }
+
+func (f *file) lint() {
+	f.lintPackageComment()
+	f.lintImports()
+	f.lintBlankImports()
+	f.lintExported()
+	f.lintNames()
+	f.lintVarDecls()
+	f.lintElses()
+	f.lintIfError()
+	f.lintRanges()
+	f.lintErrorf()
+	f.lintErrors()
+	f.lintErrorStrings()
+	f.lintReceiverNames()
+	f.lintIncDec()
+	f.lintErrorReturn()
+	f.lintUnexportedReturn()
+	f.lintTimeNames()
+	f.lintContextKeyTypes()
+	f.lintContextArgs()
+}
+
+type link string
+type category string
+
+// The variadic arguments may start with link and category types,
+// and must end with a format string and any arguments.
+// It returns the new Problem.
+func (f *file) errorf(n ast.Node, confidence float64, args ...interface{}) *Problem {
+	pos := f.fset.Position(n.Pos())
+	if pos.Filename == "" {
+		pos.Filename = f.filename
+	}
+	return f.pkg.errorfAt(pos, confidence, args...)
+}
+
+func (p *pkg) errorfAt(pos token.Position, confidence float64, args ...interface{}) *Problem {
+	problem := Problem{
+		Position:   pos,
+		Confidence: confidence,
+	}
+	if pos.Filename != "" {
+		// The file might not exist in our mapping if a //line directive was encountered.
+		if f, ok := p.files[pos.Filename]; ok {
+			problem.LineText = srcLine(f.src, pos)
+		}
+	}
+
+argLoop:
+	for len(args) > 1 { // always leave at least the format string in args
+		switch v := args[0].(type) {
+		case link:
+			problem.Link = string(v)
+		case category:
+			problem.Category = string(v)
+		default:
+			break argLoop
+		}
+		args = args[1:]
+	}
+
+	problem.Text = fmt.Sprintf(args[0].(string), args[1:]...)
+
+	p.problems = append(p.problems, problem)
+	return &p.problems[len(p.problems)-1]
+}
+
+var newImporter = func(fset *token.FileSet) types.ImporterFrom {
+	return gcexportdata.NewImporter(fset, make(map[string]*types.Package))
+}
+
+func (p *pkg) typeCheck() error {
+	config := &types.Config{
+		// By setting a no-op error reporter, the type checker does as much work as possible.
+		Error:    func(error) {},
+		Importer: newImporter(p.fset),
+	}
+	info := &types.Info{
+		Types:  make(map[ast.Expr]types.TypeAndValue),
+		Defs:   make(map[*ast.Ident]types.Object),
+		Uses:   make(map[*ast.Ident]types.Object),
+		Scopes: make(map[ast.Node]*types.Scope),
+	}
+	var anyFile *file
+	var astFiles []*ast.File
+	for _, f := range p.files {
+		anyFile = f
+		astFiles = append(astFiles, f.f)
+	}
+	pkg, err := config.Check(anyFile.f.Name.Name, p.fset, astFiles, info)
+	// Remember the typechecking info, even if config.Check failed,
+	// since we will get partial information.
+	p.typesPkg = pkg
+	p.typesInfo = info
+	return err
+}
+
+func (p *pkg) typeOf(expr ast.Expr) types.Type {
+	if p.typesInfo == nil {
+		return nil
+	}
+	return p.typesInfo.TypeOf(expr)
+}
+
+func (p *pkg) isNamedType(typ types.Type, importPath, name string) bool {
+	n, ok := typ.(*types.Named)
+	if !ok {
+		return false
+	}
+	tn := n.Obj()
+	return tn != nil && tn.Pkg() != nil && tn.Pkg().Path() == importPath && tn.Name() == name
+}
+
+// scopeOf returns the tightest scope encompassing id.
+func (p *pkg) scopeOf(id *ast.Ident) *types.Scope {
+	var scope *types.Scope
+	if obj := p.typesInfo.ObjectOf(id); obj != nil {
+		scope = obj.Parent()
+	}
+	if scope == p.typesPkg.Scope() {
+		// We were given a top-level identifier.
+		// Use the file-level scope instead of the package-level scope.
+		pos := id.Pos()
+		for _, f := range p.files {
+			if f.f.Pos() <= pos && pos < f.f.End() {
+				scope = p.typesInfo.Scopes[f.f]
+				break
+			}
+		}
+	}
+	return scope
+}
+
+func (p *pkg) scanSortable() {
+	p.sortable = make(map[string]bool)
+
+	// bitfield for which methods exist on each type.
+	const (
+		Len = 1 << iota
+		Less
+		Swap
+	)
+	nmap := map[string]int{"Len": Len, "Less": Less, "Swap": Swap}
+	has := make(map[string]int)
+	for _, f := range p.files {
+		f.walk(func(n ast.Node) bool {
+			fn, ok := n.(*ast.FuncDecl)
+			if !ok || fn.Recv == nil || len(fn.Recv.List) == 0 {
+				return true
+			}
+			// TODO(dsymonds): We could check the signature to be more precise.
+			recv := receiverType(fn)
+			if i, ok := nmap[fn.Name.Name]; ok {
+				has[recv] |= i
+			}
+			return false
+		})
+	}
+	for typ, ms := range has {
+		if ms == Len|Less|Swap {
+			p.sortable[typ] = true
+		}
+	}
+}
+
+func (p *pkg) isMain() bool {
+	for _, f := range p.files {
+		if f.isMain() {
+			return true
+		}
+	}
+	return false
+}
+
+func (f *file) isMain() bool {
+	if f.f.Name.Name == "main" {
+		return true
+	}
+	return false
+}
+
+// lintPackageComment checks package comments. It complains if
+// there is no package comment, or if it is not of the right form.
+// This has a notable false positive in that a package comment
+// could rightfully appear in a different file of the same package,
+// but that's not easy to fix since this linter is file-oriented.
+func (f *file) lintPackageComment() {
+	if f.isTest() {
+		return
+	}
+
+	const ref = styleGuideBase + "#package-comments"
+	prefix := "Package " + f.f.Name.Name + " "
+
+	// Look for a detached package comment.
+	// First, scan for the last comment that occurs before the "package" keyword.
+	var lastCG *ast.CommentGroup
+	for _, cg := range f.f.Comments {
+		if cg.Pos() > f.f.Package {
+			// Gone past "package" keyword.
+			break
+		}
+		lastCG = cg
+	}
+	if lastCG != nil && strings.HasPrefix(lastCG.Text(), prefix) {
+		endPos := f.fset.Position(lastCG.End())
+		pkgPos := f.fset.Position(f.f.Package)
+		if endPos.Line+1 < pkgPos.Line {
+			// There isn't a great place to anchor this error;
+			// the start of the blank lines between the doc and the package statement
+			// is at least pointing at the location of the problem.
+			pos := token.Position{
+				Filename: endPos.Filename,
+				// Offset not set; it is non-trivial, and doesn't appear to be needed.
+				Line:   endPos.Line + 1,
+				Column: 1,
+			}
+			f.pkg.errorfAt(pos, 0.9, link(ref), category("comments"), "package comment is detached; there should be no blank lines between it and the package statement")
+			return
+		}
+	}
+
+	if f.f.Doc == nil {
+		f.errorf(f.f, 0.2, link(ref), category("comments"), "should have a package comment, unless it's in another file for this package")
+		return
+	}
+	s := f.f.Doc.Text()
+	if ts := strings.TrimLeft(s, " \t"); ts != s {
+		f.errorf(f.f.Doc, 1, link(ref), category("comments"), "package comment should not have leading space")
+		s = ts
+	}
+	// Only non-main packages need to keep to this form.
+	if !f.pkg.main && !strings.HasPrefix(s, prefix) {
+		f.errorf(f.f.Doc, 1, link(ref), category("comments"), `package comment should be of the form "%s..."`, prefix)
+	}
+}
+
+// lintBlankImports complains if a non-main package has blank imports that are
+// not documented.
+func (f *file) lintBlankImports() {
+	// In package main and in tests, we don't complain about blank imports.
+	if f.pkg.main || f.isTest() {
+		return
+	}
+
+	// The first element of each contiguous group of blank imports should have
+	// an explanatory comment of some kind.
+	for i, imp := range f.f.Imports {
+		pos := f.fset.Position(imp.Pos())
+
+		if !isBlank(imp.Name) {
+			continue // Ignore non-blank imports.
+		}
+		if i > 0 {
+			prev := f.f.Imports[i-1]
+			prevPos := f.fset.Position(prev.Pos())
+			if isBlank(prev.Name) && prevPos.Line+1 == pos.Line {
+				continue // A subsequent blank in a group.
+			}
+		}
+
+		// This is the first blank import of a group.
+		if imp.Doc == nil && imp.Comment == nil {
+			ref := ""
+			f.errorf(imp, 1, link(ref), category("imports"), "a blank import should be only in a main or test package, or have a comment justifying it")
+		}
+	}
+}
+
+// lintImports examines import blocks.
+func (f *file) lintImports() {
+	for i, is := range f.f.Imports {
+		_ = i
+		if is.Name != nil && is.Name.Name == "." && !f.isTest() {
+			f.errorf(is, 1, link(styleGuideBase+"#import-dot"), category("imports"), "should not use dot imports")
+		}
+
+	}
+}
+
+const docCommentsLink = styleGuideBase + "#doc-comments"
+
+// lintExported examines the exported names.
+// It complains if any required doc comments are missing,
+// or if they are not of the right form. The exact rules are in
+// lintFuncDoc, lintTypeDoc and lintValueSpecDoc; this function
+// also tracks the GenDecl structure being traversed to permit
+// doc comments for constants to be on top of the const block.
+// It also complains if the names stutter when combined with
+// the package name.
+func (f *file) lintExported() {
+	if f.isTest() {
+		return
+	}
+
+	var lastGen *ast.GenDecl // last GenDecl entered.
+
+	// Set of GenDecls that have already had missing comments flagged.
+	genDeclMissingComments := make(map[*ast.GenDecl]bool)
+
+	f.walk(func(node ast.Node) bool {
+		switch v := node.(type) {
+		case *ast.GenDecl:
+			if v.Tok == token.IMPORT {
+				return false
+			}
+			// token.CONST, token.TYPE or token.VAR
+			lastGen = v
+			return true
+		case *ast.FuncDecl:
+			f.lintFuncDoc(v)
+			if v.Recv == nil {
+				// Only check for stutter on functions, not methods.
+				// Method names are not used package-qualified.
+				f.checkStutter(v.Name, "func")
+			}
+			// Don't proceed inside funcs.
+			return false
+		case *ast.TypeSpec:
+			// inside a GenDecl, which usually has the doc
+			doc := v.Doc
+			if doc == nil {
+				doc = lastGen.Doc
+			}
+			f.lintTypeDoc(v, doc)
+			f.checkStutter(v.Name, "type")
+			// Don't proceed inside types.
+			return false
+		case *ast.ValueSpec:
+			f.lintValueSpecDoc(v, lastGen, genDeclMissingComments)
+			return false
+		}
+		return true
+	})
+}
+
+var allCapsRE = regexp.MustCompile(`^[A-Z0-9_]+$`)
+
+// knownNameExceptions is a set of names that are known to be exempt from naming checks.
+// This is usually because they are constrained by having to match names in the
+// standard library.
+var knownNameExceptions = map[string]bool{
+	"LastInsertId": true, // must match database/sql
+	"kWh":          true,
+}
+
+// lintNames examines all names in the file.
+// It complains if any use underscores or incorrect known initialisms.
+func (f *file) lintNames() {
+	// Package names need slightly different handling than other names.
+	if strings.Contains(f.f.Name.Name, "_") && !strings.HasSuffix(f.f.Name.Name, "_test") {
+		f.errorf(f.f, 1, link("http://golang.org/doc/effective_go.html#package-names"), category("naming"), "don't use an underscore in package name")
+	}
+
+	check := func(id *ast.Ident, thing string) {
+		if id.Name == "_" {
+			return
+		}
+		if knownNameExceptions[id.Name] {
+			return
+		}
+
+		// Handle two common styles from other languages that don't belong in Go.
+		if len(id.Name) >= 5 && allCapsRE.MatchString(id.Name) && strings.Contains(id.Name, "_") {
+			f.errorf(id, 0.8, link(styleGuideBase+"#mixed-caps"), category("naming"), "don't use ALL_CAPS in Go names; use CamelCase")
+			return
+		}
+		if len(id.Name) > 2 && id.Name[0] == 'k' && id.Name[1] >= 'A' && id.Name[1] <= 'Z' {
+			should := string(id.Name[1]+'a'-'A') + id.Name[2:]
+			f.errorf(id, 0.8, link(styleGuideBase+"#mixed-caps"), category("naming"), "don't use leading k in Go names; %s %s should be %s", thing, id.Name, should)
+		}
+
+		should := lintName(id.Name)
+		if id.Name == should {
+			return
+		}
+
+		if len(id.Name) > 2 && strings.Contains(id.Name[1:], "_") {
+			f.errorf(id, 0.9, link("http://golang.org/doc/effective_go.html#mixed-caps"), category("naming"), "don't use underscores in Go names; %s %s should be %s", thing, id.Name, should)
+			return
+		}
+		f.errorf(id, 0.8, link(styleGuideBase+"#initialisms"), category("naming"), "%s %s should be %s", thing, id.Name, should)
+	}
+	checkList := func(fl *ast.FieldList, thing string) {
+		if fl == nil {
+			return
+		}
+		for _, f := range fl.List {
+			for _, id := range f.Names {
+				check(id, thing)
+			}
+		}
+	}
+	f.walk(func(node ast.Node) bool {
+		switch v := node.(type) {
+		case *ast.AssignStmt:
+			if v.Tok == token.ASSIGN {
+				return true
+			}
+			for _, exp := range v.Lhs {
+				if id, ok := exp.(*ast.Ident); ok {
+					check(id, "var")
+				}
+			}
+		case *ast.FuncDecl:
+			if f.isTest() && (strings.HasPrefix(v.Name.Name, "Example") || strings.HasPrefix(v.Name.Name, "Test") || strings.HasPrefix(v.Name.Name, "Benchmark")) {
+				return true
+			}
+
+			thing := "func"
+			if v.Recv != nil {
+				thing = "method"
+			}
+
+			// Exclude naming warnings for functions that are exported to C but
+			// not exported in the Go API.
+			// See https://github.com/golang/lint/issues/144.
+			if ast.IsExported(v.Name.Name) || !isCgoExported(v) {
+				check(v.Name, thing)
+			}
+
+			checkList(v.Type.Params, thing+" parameter")
+			checkList(v.Type.Results, thing+" result")
+		case *ast.GenDecl:
+			if v.Tok == token.IMPORT {
+				return true
+			}
+			var thing string
+			switch v.Tok {
+			case token.CONST:
+				thing = "const"
+			case token.TYPE:
+				thing = "type"
+			case token.VAR:
+				thing = "var"
+			}
+			for _, spec := range v.Specs {
+				switch s := spec.(type) {
+				case *ast.TypeSpec:
+					check(s.Name, thing)
+				case *ast.ValueSpec:
+					for _, id := range s.Names {
+						check(id, thing)
+					}
+				}
+			}
+		case *ast.InterfaceType:
+			// Do not check interface method names.
+			// They are often constrainted by the method names of concrete types.
+			for _, x := range v.Methods.List {
+				ft, ok := x.Type.(*ast.FuncType)
+				if !ok { // might be an embedded interface name
+					continue
+				}
+				checkList(ft.Params, "interface method parameter")
+				checkList(ft.Results, "interface method result")
+			}
+		case *ast.RangeStmt:
+			if v.Tok == token.ASSIGN {
+				return true
+			}
+			if id, ok := v.Key.(*ast.Ident); ok {
+				check(id, "range var")
+			}
+			if id, ok := v.Value.(*ast.Ident); ok {
+				check(id, "range var")
+			}
+		case *ast.StructType:
+			for _, f := range v.Fields.List {
+				for _, id := range f.Names {
+					check(id, "struct field")
+				}
+			}
+		}
+		return true
+	})
+}
+
+// lintName returns a different name if it should be different.
+func lintName(name string) (should string) {
+	// Fast path for simple cases: "_" and all lowercase.
+	if name == "_" {
+		return name
+	}
+	allLower := true
+	for _, r := range name {
+		if !unicode.IsLower(r) {
+			allLower = false
+			break
+		}
+	}
+	if allLower {
+		return name
+	}
+
+	// Split camelCase at any lower->upper transition, and split on underscores.
+	// Check each word for common initialisms.
+	runes := []rune(name)
+	w, i := 0, 0 // index of start of word, scan
+	for i+1 <= len(runes) {
+		eow := false // whether we hit the end of a word
+		if i+1 == len(runes) {
+			eow = true
+		} else if runes[i+1] == '_' {
+			// underscore; shift the remainder forward over any run of underscores
+			eow = true
+			n := 1
+			for i+n+1 < len(runes) && runes[i+n+1] == '_' {
+				n++
+			}
+
+			// Leave at most one underscore if the underscore is between two digits
+			if i+n+1 < len(runes) && unicode.IsDigit(runes[i]) && unicode.IsDigit(runes[i+n+1]) {
+				n--
+			}
+
+			copy(runes[i+1:], runes[i+n+1:])
+			runes = runes[:len(runes)-n]
+		} else if unicode.IsLower(runes[i]) && !unicode.IsLower(runes[i+1]) {
+			// lower->non-lower
+			eow = true
+		}
+		i++
+		if !eow {
+			continue
+		}
+
+		// [w,i) is a word.
+		word := string(runes[w:i])
+		if u := strings.ToUpper(word); commonInitialisms[u] {
+			// Keep consistent case, which is lowercase only at the start.
+			if w == 0 && unicode.IsLower(runes[w]) {
+				u = strings.ToLower(u)
+			}
+			// All the common initialisms are ASCII,
+			// so we can replace the bytes exactly.
+			copy(runes[w:], []rune(u))
+		} else if w > 0 && strings.ToLower(word) == word {
+			// already all lowercase, and not the first word, so uppercase the first character.
+			runes[w] = unicode.ToUpper(runes[w])
+		}
+		w = i
+	}
+	return string(runes)
+}
+
+// commonInitialisms is a set of common initialisms.
+// Only add entries that are highly unlikely to be non-initialisms.
+// For instance, "ID" is fine (Freudian code is rare), but "AND" is not.
+var commonInitialisms = map[string]bool{
+	"ACL":   true,
+	"API":   true,
+	"ASCII": true,
+	"CPU":   true,
+	"CSS":   true,
+	"DNS":   true,
+	"EOF":   true,
+	"GUID":  true,
+	"HTML":  true,
+	"HTTP":  true,
+	"HTTPS": true,
+	"ID":    true,
+	"IP":    true,
+	"JSON":  true,
+	"LHS":   true,
+	"QPS":   true,
+	"RAM":   true,
+	"RHS":   true,
+	"RPC":   true,
+	"SLA":   true,
+	"SMTP":  true,
+	"SQL":   true,
+	"SSH":   true,
+	"TCP":   true,
+	"TLS":   true,
+	"TTL":   true,
+	"UDP":   true,
+	"UI":    true,
+	"UID":   true,
+	"UUID":  true,
+	"URI":   true,
+	"URL":   true,
+	"UTF8":  true,
+	"VM":    true,
+	"XML":   true,
+	"XMPP":  true,
+	"XSRF":  true,
+	"XSS":   true,
+}
+
+// lintTypeDoc examines the doc comment on a type.
+// It complains if they are missing from an exported type,
+// or if they are not of the standard form.
+func (f *file) lintTypeDoc(t *ast.TypeSpec, doc *ast.CommentGroup) {
+	if !ast.IsExported(t.Name.Name) {
+		return
+	}
+	if doc == nil {
+		f.errorf(t, 1, link(docCommentsLink), category("comments"), "exported type %v should have comment or be unexported", t.Name)
+		return
+	}
+
+	s := doc.Text()
+	articles := [...]string{"A", "An", "The"}
+	for _, a := range articles {
+		if strings.HasPrefix(s, a+" ") {
+			s = s[len(a)+1:]
+			break
+		}
+	}
+	if !strings.HasPrefix(s, t.Name.Name+" ") {
+		f.errorf(doc, 1, link(docCommentsLink), category("comments"), `comment on exported type %v should be of the form "%v ..." (with optional leading article)`, t.Name, t.Name)
+	}
+}
+
+var commonMethods = map[string]bool{
+	"Error":     true,
+	"Read":      true,
+	"ServeHTTP": true,
+	"String":    true,
+	"Write":     true,
+}
+
+// lintFuncDoc examines doc comments on functions and methods.
+// It complains if they are missing, or not of the right form.
+// It has specific exclusions for well-known methods (see commonMethods above).
+func (f *file) lintFuncDoc(fn *ast.FuncDecl) {
+	if !ast.IsExported(fn.Name.Name) {
+		// func is unexported
+		return
+	}
+	kind := "function"
+	name := fn.Name.Name
+	if fn.Recv != nil && len(fn.Recv.List) > 0 {
+		// method
+		kind = "method"
+		recv := receiverType(fn)
+		if !ast.IsExported(recv) {
+			// receiver is unexported
+			return
+		}
+		if commonMethods[name] {
+			return
+		}
+		switch name {
+		case "Len", "Less", "Swap":
+			if f.pkg.sortable[recv] {
+				return
+			}
+		}
+		name = recv + "." + name
+	}
+	if fn.Doc == nil {
+		f.errorf(fn, 1, link(docCommentsLink), category("comments"), "exported %s %s should have comment or be unexported", kind, name)
+		return
+	}
+	s := fn.Doc.Text()
+	prefix := fn.Name.Name + " "
+	if !strings.HasPrefix(s, prefix) {
+		f.errorf(fn.Doc, 1, link(docCommentsLink), category("comments"), `comment on exported %s %s should be of the form "%s..."`, kind, name, prefix)
+	}
+}
+
+// lintValueSpecDoc examines package-global variables and constants.
+// It complains if they are not individually declared,
+// or if they are not suitably documented in the right form (unless they are in a block that is commented).
+func (f *file) lintValueSpecDoc(vs *ast.ValueSpec, gd *ast.GenDecl, genDeclMissingComments map[*ast.GenDecl]bool) {
+	kind := "var"
+	if gd.Tok == token.CONST {
+		kind = "const"
+	}
+
+	if len(vs.Names) > 1 {
+		// Check that none are exported except for the first.
+		for _, n := range vs.Names[1:] {
+			if ast.IsExported(n.Name) {
+				f.errorf(vs, 1, category("comments"), "exported %s %s should have its own declaration", kind, n.Name)
+				return
+			}
+		}
+	}
+
+	// Only one name.
+	name := vs.Names[0].Name
+	if !ast.IsExported(name) {
+		return
+	}
+
+	if vs.Doc == nil && gd.Doc == nil {
+		if genDeclMissingComments[gd] {
+			return
+		}
+		block := ""
+		if kind == "const" && gd.Lparen.IsValid() {
+			block = " (or a comment on this block)"
+		}
+		f.errorf(vs, 1, link(docCommentsLink), category("comments"), "exported %s %s should have comment%s or be unexported", kind, name, block)
+		genDeclMissingComments[gd] = true
+		return
+	}
+	// If this GenDecl has parens and a comment, we don't check its comment form.
+	if gd.Lparen.IsValid() && gd.Doc != nil {
+		return
+	}
+	// The relevant text to check will be on either vs.Doc or gd.Doc.
+	// Use vs.Doc preferentially.
+	doc := vs.Doc
+	if doc == nil {
+		doc = gd.Doc
+	}
+	prefix := name + " "
+	if !strings.HasPrefix(doc.Text(), prefix) {
+		f.errorf(doc, 1, link(docCommentsLink), category("comments"), `comment on exported %s %s should be of the form "%s..."`, kind, name, prefix)
+	}
+}
+
+func (f *file) checkStutter(id *ast.Ident, thing string) {
+	pkg, name := f.f.Name.Name, id.Name
+	if !ast.IsExported(name) {
+		// unexported name
+		return
+	}
+	// A name stutters if the package name is a strict prefix
+	// and the next character of the name starts a new word.
+	if len(name) <= len(pkg) {
+		// name is too short to stutter.
+		// This permits the name to be the same as the package name.
+		return
+	}
+	if !strings.EqualFold(pkg, name[:len(pkg)]) {
+		return
+	}
+	// We can assume the name is well-formed UTF-8.
+	// If the next rune after the package name is uppercase or an underscore
+	// the it's starting a new word and thus this name stutters.
+	rem := name[len(pkg):]
+	if next, _ := utf8.DecodeRuneInString(rem); next == '_' || unicode.IsUpper(next) {
+		f.errorf(id, 0.8, link(styleGuideBase+"#package-names"), category("naming"), "%s name will be used as %s.%s by other packages, and that stutters; consider calling this %s", thing, pkg, name, rem)
+	}
+}
+
+// zeroLiteral is a set of ast.BasicLit values that are zero values.
+// It is not exhaustive.
+var zeroLiteral = map[string]bool{
+	"false": true, // bool
+	// runes
+	`'\x00'`: true,
+	`'\000'`: true,
+	// strings
+	`""`: true,
+	"``": true,
+	// numerics
+	"0":   true,
+	"0.":  true,
+	"0.0": true,
+	"0i":  true,
+}
+
+// lintVarDecls examines variable declarations. It complains about declarations with
+// redundant LHS types that can be inferred from the RHS.
+func (f *file) lintVarDecls() {
+	var lastGen *ast.GenDecl // last GenDecl entered.
+
+	f.walk(func(node ast.Node) bool {
+		switch v := node.(type) {
+		case *ast.GenDecl:
+			if v.Tok != token.CONST && v.Tok != token.VAR {
+				return false
+			}
+			lastGen = v
+			return true
+		case *ast.ValueSpec:
+			if lastGen.Tok == token.CONST {
+				return false
+			}
+			if len(v.Names) > 1 || v.Type == nil || len(v.Values) == 0 {
+				return false
+			}
+			rhs := v.Values[0]
+			// An underscore var appears in a common idiom for compile-time interface satisfaction,
+			// as in "var _ Interface = (*Concrete)(nil)".
+			if isIdent(v.Names[0], "_") {
+				return false
+			}
+			// If the RHS is a zero value, suggest dropping it.
+			zero := false
+			if lit, ok := rhs.(*ast.BasicLit); ok {
+				zero = zeroLiteral[lit.Value]
+			} else if isIdent(rhs, "nil") {
+				zero = true
+			}
+			if zero {
+				f.errorf(rhs, 0.9, category("zero-value"), "should drop = %s from declaration of var %s; it is the zero value", f.render(rhs), v.Names[0])
+				return false
+			}
+			lhsTyp := f.pkg.typeOf(v.Type)
+			rhsTyp := f.pkg.typeOf(rhs)
+
+			if !validType(lhsTyp) || !validType(rhsTyp) {
+				// Type checking failed (often due to missing imports).
+				return false
+			}
+
+			if !types.Identical(lhsTyp, rhsTyp) {
+				// Assignment to a different type is not redundant.
+				return false
+			}
+
+			// The next three conditions are for suppressing the warning in situations
+			// where we were unable to typecheck.
+
+			// If the LHS type is an interface, don't warn, since it is probably a
+			// concrete type on the RHS. Note that our feeble lexical check here
+			// will only pick up interface{} and other literal interface types;
+			// that covers most of the cases we care to exclude right now.
+			if _, ok := v.Type.(*ast.InterfaceType); ok {
+				return false
+			}
+			// If the RHS is an untyped const, only warn if the LHS type is its default type.
+			if defType, ok := f.isUntypedConst(rhs); ok && !isIdent(v.Type, defType) {
+				return false
+			}
+
+			f.errorf(v.Type, 0.8, category("type-inference"), "should omit type %s from declaration of var %s; it will be inferred from the right-hand side", f.render(v.Type), v.Names[0])
+			return false
+		}
+		return true
+	})
+}
+
+func validType(T types.Type) bool {
+	return T != nil &&
+		T != types.Typ[types.Invalid] &&
+		!strings.Contains(T.String(), "invalid type") // good but not foolproof
+}
+
+// lintElses examines else blocks. It complains about any else block whose if block ends in a return.
+func (f *file) lintElses() {
+	// We don't want to flag if { } else if { } else { } constructions.
+	// They will appear as an IfStmt whose Else field is also an IfStmt.
+	// Record such a node so we ignore it when we visit it.
+	ignore := make(map[*ast.IfStmt]bool)
+
+	f.walk(func(node ast.Node) bool {
+		ifStmt, ok := node.(*ast.IfStmt)
+		if !ok || ifStmt.Else == nil {
+			return true
+		}
+		if ignore[ifStmt] {
+			return true
+		}
+		if elseif, ok := ifStmt.Else.(*ast.IfStmt); ok {
+			ignore[elseif] = true
+			return true
+		}
+		if _, ok := ifStmt.Else.(*ast.BlockStmt); !ok {
+			// only care about elses without conditions
+			return true
+		}
+		if len(ifStmt.Body.List) == 0 {
+			return true
+		}
+		shortDecl := false // does the if statement have a ":=" initialization statement?
+		if ifStmt.Init != nil {
+			if as, ok := ifStmt.Init.(*ast.AssignStmt); ok && as.Tok == token.DEFINE {
+				shortDecl = true
+			}
+		}
+		lastStmt := ifStmt.Body.List[len(ifStmt.Body.List)-1]
+		if _, ok := lastStmt.(*ast.ReturnStmt); ok {
+			extra := ""
+			if shortDecl {
+				extra = " (move short variable declaration to its own line if necessary)"
+			}
+			f.errorf(ifStmt.Else, 1, link(styleGuideBase+"#indent-error-flow"), category("indent"), "if block ends with a return statement, so drop this else and outdent its block"+extra)
+		}
+		return true
+	})
+}
+
+// lintRanges examines range clauses. It complains about redundant constructions.
+func (f *file) lintRanges() {
+	f.walk(func(node ast.Node) bool {
+		rs, ok := node.(*ast.RangeStmt)
+		if !ok {
+			return true
+		}
+		if rs.Value == nil {
+			// for x = range m { ... }
+			return true // single var form
+		}
+		if !isIdent(rs.Value, "_") {
+			// for ?, y = range m { ... }
+			return true
+		}
+
+		p := f.errorf(rs.Value, 1, category("range-loop"), "should omit 2nd value from range; this loop is equivalent to `for %s %s range ...`", f.render(rs.Key), rs.Tok)
+
+		newRS := *rs // shallow copy
+		newRS.Value = nil
+		p.ReplacementLine = f.firstLineOf(&newRS, rs)
+
+		return true
+	})
+}
+
+// lintErrorf examines errors.New and testing.Error calls. It complains if its only argument is an fmt.Sprintf invocation.
+func (f *file) lintErrorf() {
+	f.walk(func(node ast.Node) bool {
+		ce, ok := node.(*ast.CallExpr)
+		if !ok || len(ce.Args) != 1 {
+			return true
+		}
+		isErrorsNew := isPkgDot(ce.Fun, "errors", "New")
+		var isTestingError bool
+		se, ok := ce.Fun.(*ast.SelectorExpr)
+		if ok && se.Sel.Name == "Error" {
+			if typ := f.pkg.typeOf(se.X); typ != nil {
+				isTestingError = typ.String() == "*testing.T"
+			}
+		}
+		if !isErrorsNew && !isTestingError {
+			return true
+		}
+		arg := ce.Args[0]
+		ce, ok = arg.(*ast.CallExpr)
+		if !ok || !isPkgDot(ce.Fun, "fmt", "Sprintf") {
+			return true
+		}
+		errorfPrefix := "fmt"
+		if isTestingError {
+			errorfPrefix = f.render(se.X)
+		}
+		p := f.errorf(node, 1, category("errors"), "should replace %s(fmt.Sprintf(...)) with %s.Errorf(...)", f.render(se), errorfPrefix)
+
+		m := f.srcLineWithMatch(ce, `^(.*)`+f.render(se)+`\(fmt\.Sprintf\((.*)\)\)(.*)$`)
+		if m != nil {
+			p.ReplacementLine = m[1] + errorfPrefix + ".Errorf(" + m[2] + ")" + m[3]
+		}
+
+		return true
+	})
+}
+
+// lintErrors examines global error vars. It complains if they aren't named in the standard way.
+func (f *file) lintErrors() {
+	for _, decl := range f.f.Decls {
+		gd, ok := decl.(*ast.GenDecl)
+		if !ok || gd.Tok != token.VAR {
+			continue
+		}
+		for _, spec := range gd.Specs {
+			spec := spec.(*ast.ValueSpec)
+			if len(spec.Names) != 1 || len(spec.Values) != 1 {
+				continue
+			}
+			ce, ok := spec.Values[0].(*ast.CallExpr)
+			if !ok {
+				continue
+			}
+			if !isPkgDot(ce.Fun, "errors", "New") && !isPkgDot(ce.Fun, "fmt", "Errorf") {
+				continue
+			}
+
+			id := spec.Names[0]
+			prefix := "err"
+			if id.IsExported() {
+				prefix = "Err"
+			}
+			if !strings.HasPrefix(id.Name, prefix) {
+				f.errorf(id, 0.9, category("naming"), "error var %s should have name of the form %sFoo", id.Name, prefix)
+			}
+		}
+	}
+}
+
+func lintErrorString(s string) (isClean bool, conf float64) {
+	const basicConfidence = 0.8
+	const capConfidence = basicConfidence - 0.2
+	first, firstN := utf8.DecodeRuneInString(s)
+	last, _ := utf8.DecodeLastRuneInString(s)
+	if last == '.' || last == ':' || last == '!' || last == '\n' {
+		return false, basicConfidence
+	}
+	if unicode.IsUpper(first) {
+		// People use proper nouns and exported Go identifiers in error strings,
+		// so decrease the confidence of warnings for capitalization.
+		if len(s) <= firstN {
+			return false, capConfidence
+		}
+		// Flag strings starting with something that doesn't look like an initialism.
+		if second, _ := utf8.DecodeRuneInString(s[firstN:]); !unicode.IsUpper(second) {
+			return false, capConfidence
+		}
+	}
+	return true, 0
+}
+
+// lintErrorStrings examines error strings.
+// It complains if they are capitalized or end in punctuation or a newline.
+func (f *file) lintErrorStrings() {
+	f.walk(func(node ast.Node) bool {
+		ce, ok := node.(*ast.CallExpr)
+		if !ok {
+			return true
+		}
+		if !isPkgDot(ce.Fun, "errors", "New") && !isPkgDot(ce.Fun, "fmt", "Errorf") {
+			return true
+		}
+		if len(ce.Args) < 1 {
+			return true
+		}
+		str, ok := ce.Args[0].(*ast.BasicLit)
+		if !ok || str.Kind != token.STRING {
+			return true
+		}
+		s, _ := strconv.Unquote(str.Value) // can assume well-formed Go
+		if s == "" {
+			return true
+		}
+		clean, conf := lintErrorString(s)
+		if clean {
+			return true
+		}
+
+		f.errorf(str, conf, link(styleGuideBase+"#error-strings"), category("errors"),
+			"error strings should not be capitalized or end with punctuation or a newline")
+		return true
+	})
+}
+
+// lintReceiverNames examines receiver names. It complains about inconsistent
+// names used for the same type and names such as "this".
+func (f *file) lintReceiverNames() {
+	typeReceiver := map[string]string{}
+	f.walk(func(n ast.Node) bool {
+		fn, ok := n.(*ast.FuncDecl)
+		if !ok || fn.Recv == nil || len(fn.Recv.List) == 0 {
+			return true
+		}
+		names := fn.Recv.List[0].Names
+		if len(names) < 1 {
+			return true
+		}
+		name := names[0].Name
+		const ref = styleGuideBase + "#receiver-names"
+		if name == "_" {
+			f.errorf(n, 1, link(ref), category("naming"), `receiver name should not be an underscore, omit the name if it is unused`)
+			return true
+		}
+		if name == "this" || name == "self" {
+			f.errorf(n, 1, link(ref), category("naming"), `receiver name should be a reflection of its identity; don't use generic names such as "this" or "self"`)
+			return true
+		}
+		recv := receiverType(fn)
+		if prev, ok := typeReceiver[recv]; ok && prev != name {
+			f.errorf(n, 1, link(ref), category("naming"), "receiver name %s should be consistent with previous receiver name %s for %s", name, prev, recv)
+			return true
+		}
+		typeReceiver[recv] = name
+		return true
+	})
+}
+
+// lintIncDec examines statements that increment or decrement a variable.
+// It complains if they don't use x++ or x--.
+func (f *file) lintIncDec() {
+	f.walk(func(n ast.Node) bool {
+		as, ok := n.(*ast.AssignStmt)
+		if !ok {
+			return true
+		}
+		if len(as.Lhs) != 1 {
+			return true
+		}
+		if !isOne(as.Rhs[0]) {
+			return true
+		}
+		var suffix string
+		switch as.Tok {
+		case token.ADD_ASSIGN:
+			suffix = "++"
+		case token.SUB_ASSIGN:
+			suffix = "--"
+		default:
+			return true
+		}
+		f.errorf(as, 0.8, category("unary-op"), "should replace %s with %s%s", f.render(as), f.render(as.Lhs[0]), suffix)
+		return true
+	})
+}
+
+// lintErrorReturn examines function declarations that return an error.
+// It complains if the error isn't the last parameter.
+func (f *file) lintErrorReturn() {
+	f.walk(func(n ast.Node) bool {
+		fn, ok := n.(*ast.FuncDecl)
+		if !ok || fn.Type.Results == nil {
+			return true
+		}
+		ret := fn.Type.Results.List
+		if len(ret) <= 1 {
+			return true
+		}
+		// An error return parameter should be the last parameter.
+		// Flag any error parameters found before the last.
+		for _, r := range ret[:len(ret)-1] {
+			if isIdent(r.Type, "error") {
+				f.errorf(fn, 0.9, category("arg-order"), "error should be the last type when returning multiple items")
+				break // only flag one
+			}
+		}
+		return true
+	})
+}
+
+// lintUnexportedReturn examines exported function declarations.
+// It complains if any return an unexported type.
+func (f *file) lintUnexportedReturn() {
+	f.walk(func(n ast.Node) bool {
+		fn, ok := n.(*ast.FuncDecl)
+		if !ok {
+			return true
+		}
+		if fn.Type.Results == nil {
+			return false
+		}
+		if !fn.Name.IsExported() {
+			return false
+		}
+		thing := "func"
+		if fn.Recv != nil && len(fn.Recv.List) > 0 {
+			thing = "method"
+			if !ast.IsExported(receiverType(fn)) {
+				// Don't report exported methods of unexported types,
+				// such as private implementations of sort.Interface.
+				return false
+			}
+		}
+		for _, ret := range fn.Type.Results.List {
+			typ := f.pkg.typeOf(ret.Type)
+			if exportedType(typ) {
+				continue
+			}
+			f.errorf(ret.Type, 0.8, category("unexported-type-in-api"),
+				"exported %s %s returns unexported type %s, which can be annoying to use",
+				thing, fn.Name.Name, typ)
+			break // only flag one
+		}
+		return false
+	})
+}
+
+// exportedType reports whether typ is an exported type.
+// It is imprecise, and will err on the side of returning true,
+// such as for composite types.
+func exportedType(typ types.Type) bool {
+	switch T := typ.(type) {
+	case *types.Named:
+		// Builtin types have no package.
+		return T.Obj().Pkg() == nil || T.Obj().Exported()
+	case *types.Map:
+		return exportedType(T.Key()) && exportedType(T.Elem())
+	case interface {
+		Elem() types.Type
+	}: // array, slice, pointer, chan
+		return exportedType(T.Elem())
+	}
+	// Be conservative about other types, such as struct, interface, etc.
+	return true
+}
+
+// timeSuffixes is a list of name suffixes that imply a time unit.
+// This is not an exhaustive list.
+var timeSuffixes = []string{
+	"Sec", "Secs", "Seconds",
+	"Msec", "Msecs",
+	"Milli", "Millis", "Milliseconds",
+	"Usec", "Usecs", "Microseconds",
+	"MS", "Ms",
+}
+
+func (f *file) lintTimeNames() {
+	f.walk(func(node ast.Node) bool {
+		v, ok := node.(*ast.ValueSpec)
+		if !ok {
+			return true
+		}
+		for _, name := range v.Names {
+			origTyp := f.pkg.typeOf(name)
+			// Look for time.Duration or *time.Duration;
+			// the latter is common when using flag.Duration.
+			typ := origTyp
+			if pt, ok := typ.(*types.Pointer); ok {
+				typ = pt.Elem()
+			}
+			if !f.pkg.isNamedType(typ, "time", "Duration") {
+				continue
+			}
+			suffix := ""
+			for _, suf := range timeSuffixes {
+				if strings.HasSuffix(name.Name, suf) {
+					suffix = suf
+					break
+				}
+			}
+			if suffix == "" {
+				continue
+			}
+			f.errorf(v, 0.9, category("time"), "var %s is of type %v; don't use unit-specific suffix %q", name.Name, origTyp, suffix)
+		}
+		return true
+	})
+}
+
+// lintContextKeyTypes checks for call expressions to context.WithValue with
+// basic types used for the key argument.
+// See: https://golang.org/issue/17293
+func (f *file) lintContextKeyTypes() {
+	f.walk(func(node ast.Node) bool {
+		switch node := node.(type) {
+		case *ast.CallExpr:
+			f.checkContextKeyType(node)
+		}
+
+		return true
+	})
+}
+
+// checkContextKeyType reports an error if the call expression calls
+// context.WithValue with a key argument of basic type.
+func (f *file) checkContextKeyType(x *ast.CallExpr) {
+	sel, ok := x.Fun.(*ast.SelectorExpr)
+	if !ok {
+		return
+	}
+	pkg, ok := sel.X.(*ast.Ident)
+	if !ok || pkg.Name != "context" {
+		return
+	}
+	if sel.Sel.Name != "WithValue" {
+		return
+	}
+
+	// key is second argument to context.WithValue
+	if len(x.Args) != 3 {
+		return
+	}
+	key := f.pkg.typesInfo.Types[x.Args[1]]
+
+	if ktyp, ok := key.Type.(*types.Basic); ok && ktyp.Kind() != types.Invalid {
+		f.errorf(x, 1.0, category("context"), fmt.Sprintf("should not use basic type %s as key in context.WithValue", key.Type))
+	}
+}
+
+// lintContextArgs examines function declarations that contain an
+// argument with a type of context.Context
+// It complains if that argument isn't the first parameter.
+func (f *file) lintContextArgs() {
+	f.walk(func(n ast.Node) bool {
+		fn, ok := n.(*ast.FuncDecl)
+		if !ok || len(fn.Type.Params.List) <= 1 {
+			return true
+		}
+		// A context.Context should be the first parameter of a function.
+		// Flag any that show up after the first.
+		for _, arg := range fn.Type.Params.List[1:] {
+			if isPkgDot(arg.Type, "context", "Context") {
+				f.errorf(fn, 0.9, link("https://golang.org/pkg/context/"), category("arg-order"), "context.Context should be the first parameter of a function")
+				break // only flag one
+			}
+		}
+		return true
+	})
+}
+
+// containsComments returns whether the interval [start, end) contains any
+// comments without "// MATCH " prefix.
+func (f *file) containsComments(start, end token.Pos) bool {
+	for _, cgroup := range f.f.Comments {
+		comments := cgroup.List
+		if comments[0].Slash >= end {
+			// All comments starting with this group are after end pos.
+			return false
+		}
+		if comments[len(comments)-1].Slash < start {
+			// Comments group ends before start pos.
+			continue
+		}
+		for _, c := range comments {
+			if start <= c.Slash && c.Slash < end && !strings.HasPrefix(c.Text, "// MATCH ") {
+				return true
+			}
+		}
+	}
+	return false
+}
+
+func (f *file) lintIfError() {
+	f.walk(func(node ast.Node) bool {
+		switch v := node.(type) {
+		case *ast.BlockStmt:
+			for i := 0; i < len(v.List)-1; i++ {
+				// if var := whatever; var != nil { return var }
+				s, ok := v.List[i].(*ast.IfStmt)
+				if !ok || s.Body == nil || len(s.Body.List) != 1 || s.Else != nil {
+					continue
+				}
+				assign, ok := s.Init.(*ast.AssignStmt)
+				if !ok || len(assign.Lhs) != 1 || !(assign.Tok == token.DEFINE || assign.Tok == token.ASSIGN) {
+					continue
+				}
+				id, ok := assign.Lhs[0].(*ast.Ident)
+				if !ok {
+					continue
+				}
+				expr, ok := s.Cond.(*ast.BinaryExpr)
+				if !ok || expr.Op != token.NEQ {
+					continue
+				}
+				if lhs, ok := expr.X.(*ast.Ident); !ok || lhs.Name != id.Name {
+					continue
+				}
+				if rhs, ok := expr.Y.(*ast.Ident); !ok || rhs.Name != "nil" {
+					continue
+				}
+				r, ok := s.Body.List[0].(*ast.ReturnStmt)
+				if !ok || len(r.Results) != 1 {
+					continue
+				}
+				if r, ok := r.Results[0].(*ast.Ident); !ok || r.Name != id.Name {
+					continue
+				}
+
+				// return nil
+				r, ok = v.List[i+1].(*ast.ReturnStmt)
+				if !ok || len(r.Results) != 1 {
+					continue
+				}
+				if r, ok := r.Results[0].(*ast.Ident); !ok || r.Name != "nil" {
+					continue
+				}
+
+				// check if there are any comments explaining the construct, don't emit an error if there are some.
+				if f.containsComments(s.Pos(), r.Pos()) {
+					continue
+				}
+
+				f.errorf(v.List[i], 0.9, "redundant if ...; err != nil check, just return error instead.")
+			}
+		}
+		return true
+	})
+}
+
+// receiverType returns the named type of the method receiver, sans "*",
+// or "invalid-type" if fn.Recv is ill formed.
+func receiverType(fn *ast.FuncDecl) string {
+	switch e := fn.Recv.List[0].Type.(type) {
+	case *ast.Ident:
+		return e.Name
+	case *ast.StarExpr:
+		if id, ok := e.X.(*ast.Ident); ok {
+			return id.Name
+		}
+	}
+	// The parser accepts much more than just the legal forms.
+	return "invalid-type"
+}
+
+func (f *file) walk(fn func(ast.Node) bool) {
+	ast.Walk(walker(fn), f.f)
+}
+
+func (f *file) render(x interface{}) string {
+	var buf bytes.Buffer
+	if err := printer.Fprint(&buf, f.fset, x); err != nil {
+		panic(err)
+	}
+	return buf.String()
+}
+
+func (f *file) debugRender(x interface{}) string {
+	var buf bytes.Buffer
+	if err := ast.Fprint(&buf, f.fset, x, nil); err != nil {
+		panic(err)
+	}
+	return buf.String()
+}
+
+// walker adapts a function to satisfy the ast.Visitor interface.
+// The function return whether the walk should proceed into the node's children.
+type walker func(ast.Node) bool
+
+func (w walker) Visit(node ast.Node) ast.Visitor {
+	if w(node) {
+		return w
+	}
+	return nil
+}
+
+func isIdent(expr ast.Expr, ident string) bool {
+	id, ok := expr.(*ast.Ident)
+	return ok && id.Name == ident
+}
+
+// isBlank returns whether id is the blank identifier "_".
+// If id == nil, the answer is false.
+func isBlank(id *ast.Ident) bool { return id != nil && id.Name == "_" }
+
+func isPkgDot(expr ast.Expr, pkg, name string) bool {
+	sel, ok := expr.(*ast.SelectorExpr)
+	return ok && isIdent(sel.X, pkg) && isIdent(sel.Sel, name)
+}
+
+func isOne(expr ast.Expr) bool {
+	lit, ok := expr.(*ast.BasicLit)
+	return ok && lit.Kind == token.INT && lit.Value == "1"
+}
+
+func isCgoExported(f *ast.FuncDecl) bool {
+	if f.Recv != nil || f.Doc == nil {
+		return false
+	}
+
+	cgoExport := regexp.MustCompile(fmt.Sprintf("(?m)^//export %s$", regexp.QuoteMeta(f.Name.Name)))
+	for _, c := range f.Doc.List {
+		if cgoExport.MatchString(c.Text) {
+			return true
+		}
+	}
+	return false
+}
+
+var basicTypeKinds = map[types.BasicKind]string{
+	types.UntypedBool:    "bool",
+	types.UntypedInt:     "int",
+	types.UntypedRune:    "rune",
+	types.UntypedFloat:   "float64",
+	types.UntypedComplex: "complex128",
+	types.UntypedString:  "string",
+}
+
+// isUntypedConst reports whether expr is an untyped constant,
+// and indicates what its default type is.
+// scope may be nil.
+func (f *file) isUntypedConst(expr ast.Expr) (defType string, ok bool) {
+	// Re-evaluate expr outside of its context to see if it's untyped.
+	// (An expr evaluated within, for example, an assignment context will get the type of the LHS.)
+	exprStr := f.render(expr)
+	tv, err := types.Eval(f.fset, f.pkg.typesPkg, expr.Pos(), exprStr)
+	if err != nil {
+		return "", false
+	}
+	if b, ok := tv.Type.(*types.Basic); ok {
+		if dt, ok := basicTypeKinds[b.Kind()]; ok {
+			return dt, true
+		}
+	}
+
+	return "", false
+}
+
+// firstLineOf renders the given node and returns its first line.
+// It will also match the indentation of another node.
+func (f *file) firstLineOf(node, match ast.Node) string {
+	line := f.render(node)
+	if i := strings.Index(line, "\n"); i >= 0 {
+		line = line[:i]
+	}
+	return f.indentOf(match) + line
+}
+
+func (f *file) indentOf(node ast.Node) string {
+	line := srcLine(f.src, f.fset.Position(node.Pos()))
+	for i, r := range line {
+		switch r {
+		case ' ', '\t':
+		default:
+			return line[:i]
+		}
+	}
+	return line // unusual or empty line
+}
+
+func (f *file) srcLineWithMatch(node ast.Node, pattern string) (m []string) {
+	line := srcLine(f.src, f.fset.Position(node.Pos()))
+	line = strings.TrimSuffix(line, "\n")
+	rx := regexp.MustCompile(pattern)
+	return rx.FindStringSubmatch(line)
+}
+
+// srcLine returns the complete line at p, including the terminating newline.
+func srcLine(src []byte, p token.Position) string {
+	// Run to end of line in both directions if not at line start/end.
+	lo, hi := p.Offset, p.Offset+1
+	for lo > 0 && src[lo-1] != '\n' {
+		lo--
+	}
+	for hi < len(src) && src[hi-1] != '\n' {
+		hi++
+	}
+	return string(src[lo:hi])
+}
diff --git a/vendor/github.com/golang/protobuf/protoc-gen-go/descriptor/descriptor.pb.go b/vendor/github.com/golang/protobuf/protoc-gen-go/descriptor/descriptor.pb.go
new file mode 100644
index 0000000..c6a91bc
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/protoc-gen-go/descriptor/descriptor.pb.go
@@ -0,0 +1,2215 @@
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// source: google/protobuf/descriptor.proto
+
+/*
+Package descriptor is a generated protocol buffer package.
+
+It is generated from these files:
+	google/protobuf/descriptor.proto
+
+It has these top-level messages:
+	FileDescriptorSet
+	FileDescriptorProto
+	DescriptorProto
+	ExtensionRangeOptions
+	FieldDescriptorProto
+	OneofDescriptorProto
+	EnumDescriptorProto
+	EnumValueDescriptorProto
+	ServiceDescriptorProto
+	MethodDescriptorProto
+	FileOptions
+	MessageOptions
+	FieldOptions
+	OneofOptions
+	EnumOptions
+	EnumValueOptions
+	ServiceOptions
+	MethodOptions
+	UninterpretedOption
+	SourceCodeInfo
+	GeneratedCodeInfo
+*/
+package descriptor
+
+import proto "github.com/golang/protobuf/proto"
+import fmt "fmt"
+import math "math"
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ = proto.Marshal
+var _ = fmt.Errorf
+var _ = math.Inf
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the proto package it is being compiled against.
+// A compilation error at this line likely means your copy of the
+// proto package needs to be updated.
+const _ = proto.ProtoPackageIsVersion2 // please upgrade the proto package
+
+type FieldDescriptorProto_Type int32
+
+const (
+	// 0 is reserved for errors.
+	// Order is weird for historical reasons.
+	FieldDescriptorProto_TYPE_DOUBLE FieldDescriptorProto_Type = 1
+	FieldDescriptorProto_TYPE_FLOAT  FieldDescriptorProto_Type = 2
+	// Not ZigZag encoded.  Negative numbers take 10 bytes.  Use TYPE_SINT64 if
+	// negative values are likely.
+	FieldDescriptorProto_TYPE_INT64  FieldDescriptorProto_Type = 3
+	FieldDescriptorProto_TYPE_UINT64 FieldDescriptorProto_Type = 4
+	// Not ZigZag encoded.  Negative numbers take 10 bytes.  Use TYPE_SINT32 if
+	// negative values are likely.
+	FieldDescriptorProto_TYPE_INT32   FieldDescriptorProto_Type = 5
+	FieldDescriptorProto_TYPE_FIXED64 FieldDescriptorProto_Type = 6
+	FieldDescriptorProto_TYPE_FIXED32 FieldDescriptorProto_Type = 7
+	FieldDescriptorProto_TYPE_BOOL    FieldDescriptorProto_Type = 8
+	FieldDescriptorProto_TYPE_STRING  FieldDescriptorProto_Type = 9
+	// Tag-delimited aggregate.
+	// Group type is deprecated and not supported in proto3. However, Proto3
+	// implementations should still be able to parse the group wire format and
+	// treat group fields as unknown fields.
+	FieldDescriptorProto_TYPE_GROUP   FieldDescriptorProto_Type = 10
+	FieldDescriptorProto_TYPE_MESSAGE FieldDescriptorProto_Type = 11
+	// New in version 2.
+	FieldDescriptorProto_TYPE_BYTES    FieldDescriptorProto_Type = 12
+	FieldDescriptorProto_TYPE_UINT32   FieldDescriptorProto_Type = 13
+	FieldDescriptorProto_TYPE_ENUM     FieldDescriptorProto_Type = 14
+	FieldDescriptorProto_TYPE_SFIXED32 FieldDescriptorProto_Type = 15
+	FieldDescriptorProto_TYPE_SFIXED64 FieldDescriptorProto_Type = 16
+	FieldDescriptorProto_TYPE_SINT32   FieldDescriptorProto_Type = 17
+	FieldDescriptorProto_TYPE_SINT64   FieldDescriptorProto_Type = 18
+)
+
+var FieldDescriptorProto_Type_name = map[int32]string{
+	1:  "TYPE_DOUBLE",
+	2:  "TYPE_FLOAT",
+	3:  "TYPE_INT64",
+	4:  "TYPE_UINT64",
+	5:  "TYPE_INT32",
+	6:  "TYPE_FIXED64",
+	7:  "TYPE_FIXED32",
+	8:  "TYPE_BOOL",
+	9:  "TYPE_STRING",
+	10: "TYPE_GROUP",
+	11: "TYPE_MESSAGE",
+	12: "TYPE_BYTES",
+	13: "TYPE_UINT32",
+	14: "TYPE_ENUM",
+	15: "TYPE_SFIXED32",
+	16: "TYPE_SFIXED64",
+	17: "TYPE_SINT32",
+	18: "TYPE_SINT64",
+}
+var FieldDescriptorProto_Type_value = map[string]int32{
+	"TYPE_DOUBLE":   1,
+	"TYPE_FLOAT":    2,
+	"TYPE_INT64":    3,
+	"TYPE_UINT64":   4,
+	"TYPE_INT32":    5,
+	"TYPE_FIXED64":  6,
+	"TYPE_FIXED32":  7,
+	"TYPE_BOOL":     8,
+	"TYPE_STRING":   9,
+	"TYPE_GROUP":    10,
+	"TYPE_MESSAGE":  11,
+	"TYPE_BYTES":    12,
+	"TYPE_UINT32":   13,
+	"TYPE_ENUM":     14,
+	"TYPE_SFIXED32": 15,
+	"TYPE_SFIXED64": 16,
+	"TYPE_SINT32":   17,
+	"TYPE_SINT64":   18,
+}
+
+func (x FieldDescriptorProto_Type) Enum() *FieldDescriptorProto_Type {
+	p := new(FieldDescriptorProto_Type)
+	*p = x
+	return p
+}
+func (x FieldDescriptorProto_Type) String() string {
+	return proto.EnumName(FieldDescriptorProto_Type_name, int32(x))
+}
+func (x *FieldDescriptorProto_Type) UnmarshalJSON(data []byte) error {
+	value, err := proto.UnmarshalJSONEnum(FieldDescriptorProto_Type_value, data, "FieldDescriptorProto_Type")
+	if err != nil {
+		return err
+	}
+	*x = FieldDescriptorProto_Type(value)
+	return nil
+}
+func (FieldDescriptorProto_Type) EnumDescriptor() ([]byte, []int) { return fileDescriptor0, []int{4, 0} }
+
+type FieldDescriptorProto_Label int32
+
+const (
+	// 0 is reserved for errors
+	FieldDescriptorProto_LABEL_OPTIONAL FieldDescriptorProto_Label = 1
+	FieldDescriptorProto_LABEL_REQUIRED FieldDescriptorProto_Label = 2
+	FieldDescriptorProto_LABEL_REPEATED FieldDescriptorProto_Label = 3
+)
+
+var FieldDescriptorProto_Label_name = map[int32]string{
+	1: "LABEL_OPTIONAL",
+	2: "LABEL_REQUIRED",
+	3: "LABEL_REPEATED",
+}
+var FieldDescriptorProto_Label_value = map[string]int32{
+	"LABEL_OPTIONAL": 1,
+	"LABEL_REQUIRED": 2,
+	"LABEL_REPEATED": 3,
+}
+
+func (x FieldDescriptorProto_Label) Enum() *FieldDescriptorProto_Label {
+	p := new(FieldDescriptorProto_Label)
+	*p = x
+	return p
+}
+func (x FieldDescriptorProto_Label) String() string {
+	return proto.EnumName(FieldDescriptorProto_Label_name, int32(x))
+}
+func (x *FieldDescriptorProto_Label) UnmarshalJSON(data []byte) error {
+	value, err := proto.UnmarshalJSONEnum(FieldDescriptorProto_Label_value, data, "FieldDescriptorProto_Label")
+	if err != nil {
+		return err
+	}
+	*x = FieldDescriptorProto_Label(value)
+	return nil
+}
+func (FieldDescriptorProto_Label) EnumDescriptor() ([]byte, []int) {
+	return fileDescriptor0, []int{4, 1}
+}
+
+// Generated classes can be optimized for speed or code size.
+type FileOptions_OptimizeMode int32
+
+const (
+	FileOptions_SPEED FileOptions_OptimizeMode = 1
+	// etc.
+	FileOptions_CODE_SIZE    FileOptions_OptimizeMode = 2
+	FileOptions_LITE_RUNTIME FileOptions_OptimizeMode = 3
+)
+
+var FileOptions_OptimizeMode_name = map[int32]string{
+	1: "SPEED",
+	2: "CODE_SIZE",
+	3: "LITE_RUNTIME",
+}
+var FileOptions_OptimizeMode_value = map[string]int32{
+	"SPEED":        1,
+	"CODE_SIZE":    2,
+	"LITE_RUNTIME": 3,
+}
+
+func (x FileOptions_OptimizeMode) Enum() *FileOptions_OptimizeMode {
+	p := new(FileOptions_OptimizeMode)
+	*p = x
+	return p
+}
+func (x FileOptions_OptimizeMode) String() string {
+	return proto.EnumName(FileOptions_OptimizeMode_name, int32(x))
+}
+func (x *FileOptions_OptimizeMode) UnmarshalJSON(data []byte) error {
+	value, err := proto.UnmarshalJSONEnum(FileOptions_OptimizeMode_value, data, "FileOptions_OptimizeMode")
+	if err != nil {
+		return err
+	}
+	*x = FileOptions_OptimizeMode(value)
+	return nil
+}
+func (FileOptions_OptimizeMode) EnumDescriptor() ([]byte, []int) { return fileDescriptor0, []int{10, 0} }
+
+type FieldOptions_CType int32
+
+const (
+	// Default mode.
+	FieldOptions_STRING       FieldOptions_CType = 0
+	FieldOptions_CORD         FieldOptions_CType = 1
+	FieldOptions_STRING_PIECE FieldOptions_CType = 2
+)
+
+var FieldOptions_CType_name = map[int32]string{
+	0: "STRING",
+	1: "CORD",
+	2: "STRING_PIECE",
+}
+var FieldOptions_CType_value = map[string]int32{
+	"STRING":       0,
+	"CORD":         1,
+	"STRING_PIECE": 2,
+}
+
+func (x FieldOptions_CType) Enum() *FieldOptions_CType {
+	p := new(FieldOptions_CType)
+	*p = x
+	return p
+}
+func (x FieldOptions_CType) String() string {
+	return proto.EnumName(FieldOptions_CType_name, int32(x))
+}
+func (x *FieldOptions_CType) UnmarshalJSON(data []byte) error {
+	value, err := proto.UnmarshalJSONEnum(FieldOptions_CType_value, data, "FieldOptions_CType")
+	if err != nil {
+		return err
+	}
+	*x = FieldOptions_CType(value)
+	return nil
+}
+func (FieldOptions_CType) EnumDescriptor() ([]byte, []int) { return fileDescriptor0, []int{12, 0} }
+
+type FieldOptions_JSType int32
+
+const (
+	// Use the default type.
+	FieldOptions_JS_NORMAL FieldOptions_JSType = 0
+	// Use JavaScript strings.
+	FieldOptions_JS_STRING FieldOptions_JSType = 1
+	// Use JavaScript numbers.
+	FieldOptions_JS_NUMBER FieldOptions_JSType = 2
+)
+
+var FieldOptions_JSType_name = map[int32]string{
+	0: "JS_NORMAL",
+	1: "JS_STRING",
+	2: "JS_NUMBER",
+}
+var FieldOptions_JSType_value = map[string]int32{
+	"JS_NORMAL": 0,
+	"JS_STRING": 1,
+	"JS_NUMBER": 2,
+}
+
+func (x FieldOptions_JSType) Enum() *FieldOptions_JSType {
+	p := new(FieldOptions_JSType)
+	*p = x
+	return p
+}
+func (x FieldOptions_JSType) String() string {
+	return proto.EnumName(FieldOptions_JSType_name, int32(x))
+}
+func (x *FieldOptions_JSType) UnmarshalJSON(data []byte) error {
+	value, err := proto.UnmarshalJSONEnum(FieldOptions_JSType_value, data, "FieldOptions_JSType")
+	if err != nil {
+		return err
+	}
+	*x = FieldOptions_JSType(value)
+	return nil
+}
+func (FieldOptions_JSType) EnumDescriptor() ([]byte, []int) { return fileDescriptor0, []int{12, 1} }
+
+// Is this method side-effect-free (or safe in HTTP parlance), or idempotent,
+// or neither? HTTP based RPC implementation may choose GET verb for safe
+// methods, and PUT verb for idempotent methods instead of the default POST.
+type MethodOptions_IdempotencyLevel int32
+
+const (
+	MethodOptions_IDEMPOTENCY_UNKNOWN MethodOptions_IdempotencyLevel = 0
+	MethodOptions_NO_SIDE_EFFECTS     MethodOptions_IdempotencyLevel = 1
+	MethodOptions_IDEMPOTENT          MethodOptions_IdempotencyLevel = 2
+)
+
+var MethodOptions_IdempotencyLevel_name = map[int32]string{
+	0: "IDEMPOTENCY_UNKNOWN",
+	1: "NO_SIDE_EFFECTS",
+	2: "IDEMPOTENT",
+}
+var MethodOptions_IdempotencyLevel_value = map[string]int32{
+	"IDEMPOTENCY_UNKNOWN": 0,
+	"NO_SIDE_EFFECTS":     1,
+	"IDEMPOTENT":          2,
+}
+
+func (x MethodOptions_IdempotencyLevel) Enum() *MethodOptions_IdempotencyLevel {
+	p := new(MethodOptions_IdempotencyLevel)
+	*p = x
+	return p
+}
+func (x MethodOptions_IdempotencyLevel) String() string {
+	return proto.EnumName(MethodOptions_IdempotencyLevel_name, int32(x))
+}
+func (x *MethodOptions_IdempotencyLevel) UnmarshalJSON(data []byte) error {
+	value, err := proto.UnmarshalJSONEnum(MethodOptions_IdempotencyLevel_value, data, "MethodOptions_IdempotencyLevel")
+	if err != nil {
+		return err
+	}
+	*x = MethodOptions_IdempotencyLevel(value)
+	return nil
+}
+func (MethodOptions_IdempotencyLevel) EnumDescriptor() ([]byte, []int) {
+	return fileDescriptor0, []int{17, 0}
+}
+
+// The protocol compiler can output a FileDescriptorSet containing the .proto
+// files it parses.
+type FileDescriptorSet struct {
+	File             []*FileDescriptorProto `protobuf:"bytes,1,rep,name=file" json:"file,omitempty"`
+	XXX_unrecognized []byte                 `json:"-"`
+}
+
+func (m *FileDescriptorSet) Reset()                    { *m = FileDescriptorSet{} }
+func (m *FileDescriptorSet) String() string            { return proto.CompactTextString(m) }
+func (*FileDescriptorSet) ProtoMessage()               {}
+func (*FileDescriptorSet) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{0} }
+
+func (m *FileDescriptorSet) GetFile() []*FileDescriptorProto {
+	if m != nil {
+		return m.File
+	}
+	return nil
+}
+
+// Describes a complete .proto file.
+type FileDescriptorProto struct {
+	Name    *string `protobuf:"bytes,1,opt,name=name" json:"name,omitempty"`
+	Package *string `protobuf:"bytes,2,opt,name=package" json:"package,omitempty"`
+	// Names of files imported by this file.
+	Dependency []string `protobuf:"bytes,3,rep,name=dependency" json:"dependency,omitempty"`
+	// Indexes of the public imported files in the dependency list above.
+	PublicDependency []int32 `protobuf:"varint,10,rep,name=public_dependency,json=publicDependency" json:"public_dependency,omitempty"`
+	// Indexes of the weak imported files in the dependency list.
+	// For Google-internal migration only. Do not use.
+	WeakDependency []int32 `protobuf:"varint,11,rep,name=weak_dependency,json=weakDependency" json:"weak_dependency,omitempty"`
+	// All top-level definitions in this file.
+	MessageType []*DescriptorProto        `protobuf:"bytes,4,rep,name=message_type,json=messageType" json:"message_type,omitempty"`
+	EnumType    []*EnumDescriptorProto    `protobuf:"bytes,5,rep,name=enum_type,json=enumType" json:"enum_type,omitempty"`
+	Service     []*ServiceDescriptorProto `protobuf:"bytes,6,rep,name=service" json:"service,omitempty"`
+	Extension   []*FieldDescriptorProto   `protobuf:"bytes,7,rep,name=extension" json:"extension,omitempty"`
+	Options     *FileOptions              `protobuf:"bytes,8,opt,name=options" json:"options,omitempty"`
+	// This field contains optional information about the original source code.
+	// You may safely remove this entire field without harming runtime
+	// functionality of the descriptors -- the information is needed only by
+	// development tools.
+	SourceCodeInfo *SourceCodeInfo `protobuf:"bytes,9,opt,name=source_code_info,json=sourceCodeInfo" json:"source_code_info,omitempty"`
+	// The syntax of the proto file.
+	// The supported values are "proto2" and "proto3".
+	Syntax           *string `protobuf:"bytes,12,opt,name=syntax" json:"syntax,omitempty"`
+	XXX_unrecognized []byte  `json:"-"`
+}
+
+func (m *FileDescriptorProto) Reset()                    { *m = FileDescriptorProto{} }
+func (m *FileDescriptorProto) String() string            { return proto.CompactTextString(m) }
+func (*FileDescriptorProto) ProtoMessage()               {}
+func (*FileDescriptorProto) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{1} }
+
+func (m *FileDescriptorProto) GetName() string {
+	if m != nil && m.Name != nil {
+		return *m.Name
+	}
+	return ""
+}
+
+func (m *FileDescriptorProto) GetPackage() string {
+	if m != nil && m.Package != nil {
+		return *m.Package
+	}
+	return ""
+}
+
+func (m *FileDescriptorProto) GetDependency() []string {
+	if m != nil {
+		return m.Dependency
+	}
+	return nil
+}
+
+func (m *FileDescriptorProto) GetPublicDependency() []int32 {
+	if m != nil {
+		return m.PublicDependency
+	}
+	return nil
+}
+
+func (m *FileDescriptorProto) GetWeakDependency() []int32 {
+	if m != nil {
+		return m.WeakDependency
+	}
+	return nil
+}
+
+func (m *FileDescriptorProto) GetMessageType() []*DescriptorProto {
+	if m != nil {
+		return m.MessageType
+	}
+	return nil
+}
+
+func (m *FileDescriptorProto) GetEnumType() []*EnumDescriptorProto {
+	if m != nil {
+		return m.EnumType
+	}
+	return nil
+}
+
+func (m *FileDescriptorProto) GetService() []*ServiceDescriptorProto {
+	if m != nil {
+		return m.Service
+	}
+	return nil
+}
+
+func (m *FileDescriptorProto) GetExtension() []*FieldDescriptorProto {
+	if m != nil {
+		return m.Extension
+	}
+	return nil
+}
+
+func (m *FileDescriptorProto) GetOptions() *FileOptions {
+	if m != nil {
+		return m.Options
+	}
+	return nil
+}
+
+func (m *FileDescriptorProto) GetSourceCodeInfo() *SourceCodeInfo {
+	if m != nil {
+		return m.SourceCodeInfo
+	}
+	return nil
+}
+
+func (m *FileDescriptorProto) GetSyntax() string {
+	if m != nil && m.Syntax != nil {
+		return *m.Syntax
+	}
+	return ""
+}
+
+// Describes a message type.
+type DescriptorProto struct {
+	Name           *string                           `protobuf:"bytes,1,opt,name=name" json:"name,omitempty"`
+	Field          []*FieldDescriptorProto           `protobuf:"bytes,2,rep,name=field" json:"field,omitempty"`
+	Extension      []*FieldDescriptorProto           `protobuf:"bytes,6,rep,name=extension" json:"extension,omitempty"`
+	NestedType     []*DescriptorProto                `protobuf:"bytes,3,rep,name=nested_type,json=nestedType" json:"nested_type,omitempty"`
+	EnumType       []*EnumDescriptorProto            `protobuf:"bytes,4,rep,name=enum_type,json=enumType" json:"enum_type,omitempty"`
+	ExtensionRange []*DescriptorProto_ExtensionRange `protobuf:"bytes,5,rep,name=extension_range,json=extensionRange" json:"extension_range,omitempty"`
+	OneofDecl      []*OneofDescriptorProto           `protobuf:"bytes,8,rep,name=oneof_decl,json=oneofDecl" json:"oneof_decl,omitempty"`
+	Options        *MessageOptions                   `protobuf:"bytes,7,opt,name=options" json:"options,omitempty"`
+	ReservedRange  []*DescriptorProto_ReservedRange  `protobuf:"bytes,9,rep,name=reserved_range,json=reservedRange" json:"reserved_range,omitempty"`
+	// Reserved field names, which may not be used by fields in the same message.
+	// A given name may only be reserved once.
+	ReservedName     []string `protobuf:"bytes,10,rep,name=reserved_name,json=reservedName" json:"reserved_name,omitempty"`
+	XXX_unrecognized []byte   `json:"-"`
+}
+
+func (m *DescriptorProto) Reset()                    { *m = DescriptorProto{} }
+func (m *DescriptorProto) String() string            { return proto.CompactTextString(m) }
+func (*DescriptorProto) ProtoMessage()               {}
+func (*DescriptorProto) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{2} }
+
+func (m *DescriptorProto) GetName() string {
+	if m != nil && m.Name != nil {
+		return *m.Name
+	}
+	return ""
+}
+
+func (m *DescriptorProto) GetField() []*FieldDescriptorProto {
+	if m != nil {
+		return m.Field
+	}
+	return nil
+}
+
+func (m *DescriptorProto) GetExtension() []*FieldDescriptorProto {
+	if m != nil {
+		return m.Extension
+	}
+	return nil
+}
+
+func (m *DescriptorProto) GetNestedType() []*DescriptorProto {
+	if m != nil {
+		return m.NestedType
+	}
+	return nil
+}
+
+func (m *DescriptorProto) GetEnumType() []*EnumDescriptorProto {
+	if m != nil {
+		return m.EnumType
+	}
+	return nil
+}
+
+func (m *DescriptorProto) GetExtensionRange() []*DescriptorProto_ExtensionRange {
+	if m != nil {
+		return m.ExtensionRange
+	}
+	return nil
+}
+
+func (m *DescriptorProto) GetOneofDecl() []*OneofDescriptorProto {
+	if m != nil {
+		return m.OneofDecl
+	}
+	return nil
+}
+
+func (m *DescriptorProto) GetOptions() *MessageOptions {
+	if m != nil {
+		return m.Options
+	}
+	return nil
+}
+
+func (m *DescriptorProto) GetReservedRange() []*DescriptorProto_ReservedRange {
+	if m != nil {
+		return m.ReservedRange
+	}
+	return nil
+}
+
+func (m *DescriptorProto) GetReservedName() []string {
+	if m != nil {
+		return m.ReservedName
+	}
+	return nil
+}
+
+type DescriptorProto_ExtensionRange struct {
+	Start            *int32                 `protobuf:"varint,1,opt,name=start" json:"start,omitempty"`
+	End              *int32                 `protobuf:"varint,2,opt,name=end" json:"end,omitempty"`
+	Options          *ExtensionRangeOptions `protobuf:"bytes,3,opt,name=options" json:"options,omitempty"`
+	XXX_unrecognized []byte                 `json:"-"`
+}
+
+func (m *DescriptorProto_ExtensionRange) Reset()         { *m = DescriptorProto_ExtensionRange{} }
+func (m *DescriptorProto_ExtensionRange) String() string { return proto.CompactTextString(m) }
+func (*DescriptorProto_ExtensionRange) ProtoMessage()    {}
+func (*DescriptorProto_ExtensionRange) Descriptor() ([]byte, []int) {
+	return fileDescriptor0, []int{2, 0}
+}
+
+func (m *DescriptorProto_ExtensionRange) GetStart() int32 {
+	if m != nil && m.Start != nil {
+		return *m.Start
+	}
+	return 0
+}
+
+func (m *DescriptorProto_ExtensionRange) GetEnd() int32 {
+	if m != nil && m.End != nil {
+		return *m.End
+	}
+	return 0
+}
+
+func (m *DescriptorProto_ExtensionRange) GetOptions() *ExtensionRangeOptions {
+	if m != nil {
+		return m.Options
+	}
+	return nil
+}
+
+// Range of reserved tag numbers. Reserved tag numbers may not be used by
+// fields or extension ranges in the same message. Reserved ranges may
+// not overlap.
+type DescriptorProto_ReservedRange struct {
+	Start            *int32 `protobuf:"varint,1,opt,name=start" json:"start,omitempty"`
+	End              *int32 `protobuf:"varint,2,opt,name=end" json:"end,omitempty"`
+	XXX_unrecognized []byte `json:"-"`
+}
+
+func (m *DescriptorProto_ReservedRange) Reset()         { *m = DescriptorProto_ReservedRange{} }
+func (m *DescriptorProto_ReservedRange) String() string { return proto.CompactTextString(m) }
+func (*DescriptorProto_ReservedRange) ProtoMessage()    {}
+func (*DescriptorProto_ReservedRange) Descriptor() ([]byte, []int) {
+	return fileDescriptor0, []int{2, 1}
+}
+
+func (m *DescriptorProto_ReservedRange) GetStart() int32 {
+	if m != nil && m.Start != nil {
+		return *m.Start
+	}
+	return 0
+}
+
+func (m *DescriptorProto_ReservedRange) GetEnd() int32 {
+	if m != nil && m.End != nil {
+		return *m.End
+	}
+	return 0
+}
+
+type ExtensionRangeOptions struct {
+	// The parser stores options it doesn't recognize here. See above.
+	UninterpretedOption          []*UninterpretedOption `protobuf:"bytes,999,rep,name=uninterpreted_option,json=uninterpretedOption" json:"uninterpreted_option,omitempty"`
+	proto.XXX_InternalExtensions `json:"-"`
+	XXX_unrecognized             []byte `json:"-"`
+}
+
+func (m *ExtensionRangeOptions) Reset()                    { *m = ExtensionRangeOptions{} }
+func (m *ExtensionRangeOptions) String() string            { return proto.CompactTextString(m) }
+func (*ExtensionRangeOptions) ProtoMessage()               {}
+func (*ExtensionRangeOptions) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{3} }
+
+var extRange_ExtensionRangeOptions = []proto.ExtensionRange{
+	{1000, 536870911},
+}
+
+func (*ExtensionRangeOptions) ExtensionRangeArray() []proto.ExtensionRange {
+	return extRange_ExtensionRangeOptions
+}
+
+func (m *ExtensionRangeOptions) GetUninterpretedOption() []*UninterpretedOption {
+	if m != nil {
+		return m.UninterpretedOption
+	}
+	return nil
+}
+
+// Describes a field within a message.
+type FieldDescriptorProto struct {
+	Name   *string                     `protobuf:"bytes,1,opt,name=name" json:"name,omitempty"`
+	Number *int32                      `protobuf:"varint,3,opt,name=number" json:"number,omitempty"`
+	Label  *FieldDescriptorProto_Label `protobuf:"varint,4,opt,name=label,enum=google.protobuf.FieldDescriptorProto_Label" json:"label,omitempty"`
+	// If type_name is set, this need not be set.  If both this and type_name
+	// are set, this must be one of TYPE_ENUM, TYPE_MESSAGE or TYPE_GROUP.
+	Type *FieldDescriptorProto_Type `protobuf:"varint,5,opt,name=type,enum=google.protobuf.FieldDescriptorProto_Type" json:"type,omitempty"`
+	// For message and enum types, this is the name of the type.  If the name
+	// starts with a '.', it is fully-qualified.  Otherwise, C++-like scoping
+	// rules are used to find the type (i.e. first the nested types within this
+	// message are searched, then within the parent, on up to the root
+	// namespace).
+	TypeName *string `protobuf:"bytes,6,opt,name=type_name,json=typeName" json:"type_name,omitempty"`
+	// For extensions, this is the name of the type being extended.  It is
+	// resolved in the same manner as type_name.
+	Extendee *string `protobuf:"bytes,2,opt,name=extendee" json:"extendee,omitempty"`
+	// For numeric types, contains the original text representation of the value.
+	// For booleans, "true" or "false".
+	// For strings, contains the default text contents (not escaped in any way).
+	// For bytes, contains the C escaped value.  All bytes >= 128 are escaped.
+	// TODO(kenton):  Base-64 encode?
+	DefaultValue *string `protobuf:"bytes,7,opt,name=default_value,json=defaultValue" json:"default_value,omitempty"`
+	// If set, gives the index of a oneof in the containing type's oneof_decl
+	// list.  This field is a member of that oneof.
+	OneofIndex *int32 `protobuf:"varint,9,opt,name=oneof_index,json=oneofIndex" json:"oneof_index,omitempty"`
+	// JSON name of this field. The value is set by protocol compiler. If the
+	// user has set a "json_name" option on this field, that option's value
+	// will be used. Otherwise, it's deduced from the field's name by converting
+	// it to camelCase.
+	JsonName         *string       `protobuf:"bytes,10,opt,name=json_name,json=jsonName" json:"json_name,omitempty"`
+	Options          *FieldOptions `protobuf:"bytes,8,opt,name=options" json:"options,omitempty"`
+	XXX_unrecognized []byte        `json:"-"`
+}
+
+func (m *FieldDescriptorProto) Reset()                    { *m = FieldDescriptorProto{} }
+func (m *FieldDescriptorProto) String() string            { return proto.CompactTextString(m) }
+func (*FieldDescriptorProto) ProtoMessage()               {}
+func (*FieldDescriptorProto) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{4} }
+
+func (m *FieldDescriptorProto) GetName() string {
+	if m != nil && m.Name != nil {
+		return *m.Name
+	}
+	return ""
+}
+
+func (m *FieldDescriptorProto) GetNumber() int32 {
+	if m != nil && m.Number != nil {
+		return *m.Number
+	}
+	return 0
+}
+
+func (m *FieldDescriptorProto) GetLabel() FieldDescriptorProto_Label {
+	if m != nil && m.Label != nil {
+		return *m.Label
+	}
+	return FieldDescriptorProto_LABEL_OPTIONAL
+}
+
+func (m *FieldDescriptorProto) GetType() FieldDescriptorProto_Type {
+	if m != nil && m.Type != nil {
+		return *m.Type
+	}
+	return FieldDescriptorProto_TYPE_DOUBLE
+}
+
+func (m *FieldDescriptorProto) GetTypeName() string {
+	if m != nil && m.TypeName != nil {
+		return *m.TypeName
+	}
+	return ""
+}
+
+func (m *FieldDescriptorProto) GetExtendee() string {
+	if m != nil && m.Extendee != nil {
+		return *m.Extendee
+	}
+	return ""
+}
+
+func (m *FieldDescriptorProto) GetDefaultValue() string {
+	if m != nil && m.DefaultValue != nil {
+		return *m.DefaultValue
+	}
+	return ""
+}
+
+func (m *FieldDescriptorProto) GetOneofIndex() int32 {
+	if m != nil && m.OneofIndex != nil {
+		return *m.OneofIndex
+	}
+	return 0
+}
+
+func (m *FieldDescriptorProto) GetJsonName() string {
+	if m != nil && m.JsonName != nil {
+		return *m.JsonName
+	}
+	return ""
+}
+
+func (m *FieldDescriptorProto) GetOptions() *FieldOptions {
+	if m != nil {
+		return m.Options
+	}
+	return nil
+}
+
+// Describes a oneof.
+type OneofDescriptorProto struct {
+	Name             *string       `protobuf:"bytes,1,opt,name=name" json:"name,omitempty"`
+	Options          *OneofOptions `protobuf:"bytes,2,opt,name=options" json:"options,omitempty"`
+	XXX_unrecognized []byte        `json:"-"`
+}
+
+func (m *OneofDescriptorProto) Reset()                    { *m = OneofDescriptorProto{} }
+func (m *OneofDescriptorProto) String() string            { return proto.CompactTextString(m) }
+func (*OneofDescriptorProto) ProtoMessage()               {}
+func (*OneofDescriptorProto) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{5} }
+
+func (m *OneofDescriptorProto) GetName() string {
+	if m != nil && m.Name != nil {
+		return *m.Name
+	}
+	return ""
+}
+
+func (m *OneofDescriptorProto) GetOptions() *OneofOptions {
+	if m != nil {
+		return m.Options
+	}
+	return nil
+}
+
+// Describes an enum type.
+type EnumDescriptorProto struct {
+	Name             *string                     `protobuf:"bytes,1,opt,name=name" json:"name,omitempty"`
+	Value            []*EnumValueDescriptorProto `protobuf:"bytes,2,rep,name=value" json:"value,omitempty"`
+	Options          *EnumOptions                `protobuf:"bytes,3,opt,name=options" json:"options,omitempty"`
+	XXX_unrecognized []byte                      `json:"-"`
+}
+
+func (m *EnumDescriptorProto) Reset()                    { *m = EnumDescriptorProto{} }
+func (m *EnumDescriptorProto) String() string            { return proto.CompactTextString(m) }
+func (*EnumDescriptorProto) ProtoMessage()               {}
+func (*EnumDescriptorProto) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{6} }
+
+func (m *EnumDescriptorProto) GetName() string {
+	if m != nil && m.Name != nil {
+		return *m.Name
+	}
+	return ""
+}
+
+func (m *EnumDescriptorProto) GetValue() []*EnumValueDescriptorProto {
+	if m != nil {
+		return m.Value
+	}
+	return nil
+}
+
+func (m *EnumDescriptorProto) GetOptions() *EnumOptions {
+	if m != nil {
+		return m.Options
+	}
+	return nil
+}
+
+// Describes a value within an enum.
+type EnumValueDescriptorProto struct {
+	Name             *string           `protobuf:"bytes,1,opt,name=name" json:"name,omitempty"`
+	Number           *int32            `protobuf:"varint,2,opt,name=number" json:"number,omitempty"`
+	Options          *EnumValueOptions `protobuf:"bytes,3,opt,name=options" json:"options,omitempty"`
+	XXX_unrecognized []byte            `json:"-"`
+}
+
+func (m *EnumValueDescriptorProto) Reset()                    { *m = EnumValueDescriptorProto{} }
+func (m *EnumValueDescriptorProto) String() string            { return proto.CompactTextString(m) }
+func (*EnumValueDescriptorProto) ProtoMessage()               {}
+func (*EnumValueDescriptorProto) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{7} }
+
+func (m *EnumValueDescriptorProto) GetName() string {
+	if m != nil && m.Name != nil {
+		return *m.Name
+	}
+	return ""
+}
+
+func (m *EnumValueDescriptorProto) GetNumber() int32 {
+	if m != nil && m.Number != nil {
+		return *m.Number
+	}
+	return 0
+}
+
+func (m *EnumValueDescriptorProto) GetOptions() *EnumValueOptions {
+	if m != nil {
+		return m.Options
+	}
+	return nil
+}
+
+// Describes a service.
+type ServiceDescriptorProto struct {
+	Name             *string                  `protobuf:"bytes,1,opt,name=name" json:"name,omitempty"`
+	Method           []*MethodDescriptorProto `protobuf:"bytes,2,rep,name=method" json:"method,omitempty"`
+	Options          *ServiceOptions          `protobuf:"bytes,3,opt,name=options" json:"options,omitempty"`
+	XXX_unrecognized []byte                   `json:"-"`
+}
+
+func (m *ServiceDescriptorProto) Reset()                    { *m = ServiceDescriptorProto{} }
+func (m *ServiceDescriptorProto) String() string            { return proto.CompactTextString(m) }
+func (*ServiceDescriptorProto) ProtoMessage()               {}
+func (*ServiceDescriptorProto) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{8} }
+
+func (m *ServiceDescriptorProto) GetName() string {
+	if m != nil && m.Name != nil {
+		return *m.Name
+	}
+	return ""
+}
+
+func (m *ServiceDescriptorProto) GetMethod() []*MethodDescriptorProto {
+	if m != nil {
+		return m.Method
+	}
+	return nil
+}
+
+func (m *ServiceDescriptorProto) GetOptions() *ServiceOptions {
+	if m != nil {
+		return m.Options
+	}
+	return nil
+}
+
+// Describes a method of a service.
+type MethodDescriptorProto struct {
+	Name *string `protobuf:"bytes,1,opt,name=name" json:"name,omitempty"`
+	// Input and output type names.  These are resolved in the same way as
+	// FieldDescriptorProto.type_name, but must refer to a message type.
+	InputType  *string        `protobuf:"bytes,2,opt,name=input_type,json=inputType" json:"input_type,omitempty"`
+	OutputType *string        `protobuf:"bytes,3,opt,name=output_type,json=outputType" json:"output_type,omitempty"`
+	Options    *MethodOptions `protobuf:"bytes,4,opt,name=options" json:"options,omitempty"`
+	// Identifies if client streams multiple client messages
+	ClientStreaming *bool `protobuf:"varint,5,opt,name=client_streaming,json=clientStreaming,def=0" json:"client_streaming,omitempty"`
+	// Identifies if server streams multiple server messages
+	ServerStreaming  *bool  `protobuf:"varint,6,opt,name=server_streaming,json=serverStreaming,def=0" json:"server_streaming,omitempty"`
+	XXX_unrecognized []byte `json:"-"`
+}
+
+func (m *MethodDescriptorProto) Reset()                    { *m = MethodDescriptorProto{} }
+func (m *MethodDescriptorProto) String() string            { return proto.CompactTextString(m) }
+func (*MethodDescriptorProto) ProtoMessage()               {}
+func (*MethodDescriptorProto) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{9} }
+
+const Default_MethodDescriptorProto_ClientStreaming bool = false
+const Default_MethodDescriptorProto_ServerStreaming bool = false
+
+func (m *MethodDescriptorProto) GetName() string {
+	if m != nil && m.Name != nil {
+		return *m.Name
+	}
+	return ""
+}
+
+func (m *MethodDescriptorProto) GetInputType() string {
+	if m != nil && m.InputType != nil {
+		return *m.InputType
+	}
+	return ""
+}
+
+func (m *MethodDescriptorProto) GetOutputType() string {
+	if m != nil && m.OutputType != nil {
+		return *m.OutputType
+	}
+	return ""
+}
+
+func (m *MethodDescriptorProto) GetOptions() *MethodOptions {
+	if m != nil {
+		return m.Options
+	}
+	return nil
+}
+
+func (m *MethodDescriptorProto) GetClientStreaming() bool {
+	if m != nil && m.ClientStreaming != nil {
+		return *m.ClientStreaming
+	}
+	return Default_MethodDescriptorProto_ClientStreaming
+}
+
+func (m *MethodDescriptorProto) GetServerStreaming() bool {
+	if m != nil && m.ServerStreaming != nil {
+		return *m.ServerStreaming
+	}
+	return Default_MethodDescriptorProto_ServerStreaming
+}
+
+type FileOptions struct {
+	// Sets the Java package where classes generated from this .proto will be
+	// placed.  By default, the proto package is used, but this is often
+	// inappropriate because proto packages do not normally start with backwards
+	// domain names.
+	JavaPackage *string `protobuf:"bytes,1,opt,name=java_package,json=javaPackage" json:"java_package,omitempty"`
+	// If set, all the classes from the .proto file are wrapped in a single
+	// outer class with the given name.  This applies to both Proto1
+	// (equivalent to the old "--one_java_file" option) and Proto2 (where
+	// a .proto always translates to a single class, but you may want to
+	// explicitly choose the class name).
+	JavaOuterClassname *string `protobuf:"bytes,8,opt,name=java_outer_classname,json=javaOuterClassname" json:"java_outer_classname,omitempty"`
+	// If set true, then the Java code generator will generate a separate .java
+	// file for each top-level message, enum, and service defined in the .proto
+	// file.  Thus, these types will *not* be nested inside the outer class
+	// named by java_outer_classname.  However, the outer class will still be
+	// generated to contain the file's getDescriptor() method as well as any
+	// top-level extensions defined in the file.
+	JavaMultipleFiles *bool `protobuf:"varint,10,opt,name=java_multiple_files,json=javaMultipleFiles,def=0" json:"java_multiple_files,omitempty"`
+	// This option does nothing.
+	JavaGenerateEqualsAndHash *bool `protobuf:"varint,20,opt,name=java_generate_equals_and_hash,json=javaGenerateEqualsAndHash" json:"java_generate_equals_and_hash,omitempty"`
+	// If set true, then the Java2 code generator will generate code that
+	// throws an exception whenever an attempt is made to assign a non-UTF-8
+	// byte sequence to a string field.
+	// Message reflection will do the same.
+	// However, an extension field still accepts non-UTF-8 byte sequences.
+	// This option has no effect on when used with the lite runtime.
+	JavaStringCheckUtf8 *bool                     `protobuf:"varint,27,opt,name=java_string_check_utf8,json=javaStringCheckUtf8,def=0" json:"java_string_check_utf8,omitempty"`
+	OptimizeFor         *FileOptions_OptimizeMode `protobuf:"varint,9,opt,name=optimize_for,json=optimizeFor,enum=google.protobuf.FileOptions_OptimizeMode,def=1" json:"optimize_for,omitempty"`
+	// Sets the Go package where structs generated from this .proto will be
+	// placed. If omitted, the Go package will be derived from the following:
+	//   - The basename of the package import path, if provided.
+	//   - Otherwise, the package statement in the .proto file, if present.
+	//   - Otherwise, the basename of the .proto file, without extension.
+	GoPackage *string `protobuf:"bytes,11,opt,name=go_package,json=goPackage" json:"go_package,omitempty"`
+	// Should generic services be generated in each language?  "Generic" services
+	// are not specific to any particular RPC system.  They are generated by the
+	// main code generators in each language (without additional plugins).
+	// Generic services were the only kind of service generation supported by
+	// early versions of google.protobuf.
+	//
+	// Generic services are now considered deprecated in favor of using plugins
+	// that generate code specific to your particular RPC system.  Therefore,
+	// these default to false.  Old code which depends on generic services should
+	// explicitly set them to true.
+	CcGenericServices   *bool `protobuf:"varint,16,opt,name=cc_generic_services,json=ccGenericServices,def=0" json:"cc_generic_services,omitempty"`
+	JavaGenericServices *bool `protobuf:"varint,17,opt,name=java_generic_services,json=javaGenericServices,def=0" json:"java_generic_services,omitempty"`
+	PyGenericServices   *bool `protobuf:"varint,18,opt,name=py_generic_services,json=pyGenericServices,def=0" json:"py_generic_services,omitempty"`
+	PhpGenericServices  *bool `protobuf:"varint,42,opt,name=php_generic_services,json=phpGenericServices,def=0" json:"php_generic_services,omitempty"`
+	// Is this file deprecated?
+	// Depending on the target platform, this can emit Deprecated annotations
+	// for everything in the file, or it will be completely ignored; in the very
+	// least, this is a formalization for deprecating files.
+	Deprecated *bool `protobuf:"varint,23,opt,name=deprecated,def=0" json:"deprecated,omitempty"`
+	// Enables the use of arenas for the proto messages in this file. This applies
+	// only to generated classes for C++.
+	CcEnableArenas *bool `protobuf:"varint,31,opt,name=cc_enable_arenas,json=ccEnableArenas,def=0" json:"cc_enable_arenas,omitempty"`
+	// Sets the objective c class prefix which is prepended to all objective c
+	// generated classes from this .proto. There is no default.
+	ObjcClassPrefix *string `protobuf:"bytes,36,opt,name=objc_class_prefix,json=objcClassPrefix" json:"objc_class_prefix,omitempty"`
+	// Namespace for generated classes; defaults to the package.
+	CsharpNamespace *string `protobuf:"bytes,37,opt,name=csharp_namespace,json=csharpNamespace" json:"csharp_namespace,omitempty"`
+	// By default Swift generators will take the proto package and CamelCase it
+	// replacing '.' with underscore and use that to prefix the types/symbols
+	// defined. When this options is provided, they will use this value instead
+	// to prefix the types/symbols defined.
+	SwiftPrefix *string `protobuf:"bytes,39,opt,name=swift_prefix,json=swiftPrefix" json:"swift_prefix,omitempty"`
+	// Sets the php class prefix which is prepended to all php generated classes
+	// from this .proto. Default is empty.
+	PhpClassPrefix *string `protobuf:"bytes,40,opt,name=php_class_prefix,json=phpClassPrefix" json:"php_class_prefix,omitempty"`
+	// Use this option to change the namespace of php generated classes. Default
+	// is empty. When this option is empty, the package name will be used for
+	// determining the namespace.
+	PhpNamespace *string `protobuf:"bytes,41,opt,name=php_namespace,json=phpNamespace" json:"php_namespace,omitempty"`
+	// The parser stores options it doesn't recognize here. See above.
+	UninterpretedOption          []*UninterpretedOption `protobuf:"bytes,999,rep,name=uninterpreted_option,json=uninterpretedOption" json:"uninterpreted_option,omitempty"`
+	proto.XXX_InternalExtensions `json:"-"`
+	XXX_unrecognized             []byte `json:"-"`
+}
+
+func (m *FileOptions) Reset()                    { *m = FileOptions{} }
+func (m *FileOptions) String() string            { return proto.CompactTextString(m) }
+func (*FileOptions) ProtoMessage()               {}
+func (*FileOptions) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{10} }
+
+var extRange_FileOptions = []proto.ExtensionRange{
+	{1000, 536870911},
+}
+
+func (*FileOptions) ExtensionRangeArray() []proto.ExtensionRange {
+	return extRange_FileOptions
+}
+
+const Default_FileOptions_JavaMultipleFiles bool = false
+const Default_FileOptions_JavaStringCheckUtf8 bool = false
+const Default_FileOptions_OptimizeFor FileOptions_OptimizeMode = FileOptions_SPEED
+const Default_FileOptions_CcGenericServices bool = false
+const Default_FileOptions_JavaGenericServices bool = false
+const Default_FileOptions_PyGenericServices bool = false
+const Default_FileOptions_PhpGenericServices bool = false
+const Default_FileOptions_Deprecated bool = false
+const Default_FileOptions_CcEnableArenas bool = false
+
+func (m *FileOptions) GetJavaPackage() string {
+	if m != nil && m.JavaPackage != nil {
+		return *m.JavaPackage
+	}
+	return ""
+}
+
+func (m *FileOptions) GetJavaOuterClassname() string {
+	if m != nil && m.JavaOuterClassname != nil {
+		return *m.JavaOuterClassname
+	}
+	return ""
+}
+
+func (m *FileOptions) GetJavaMultipleFiles() bool {
+	if m != nil && m.JavaMultipleFiles != nil {
+		return *m.JavaMultipleFiles
+	}
+	return Default_FileOptions_JavaMultipleFiles
+}
+
+func (m *FileOptions) GetJavaGenerateEqualsAndHash() bool {
+	if m != nil && m.JavaGenerateEqualsAndHash != nil {
+		return *m.JavaGenerateEqualsAndHash
+	}
+	return false
+}
+
+func (m *FileOptions) GetJavaStringCheckUtf8() bool {
+	if m != nil && m.JavaStringCheckUtf8 != nil {
+		return *m.JavaStringCheckUtf8
+	}
+	return Default_FileOptions_JavaStringCheckUtf8
+}
+
+func (m *FileOptions) GetOptimizeFor() FileOptions_OptimizeMode {
+	if m != nil && m.OptimizeFor != nil {
+		return *m.OptimizeFor
+	}
+	return Default_FileOptions_OptimizeFor
+}
+
+func (m *FileOptions) GetGoPackage() string {
+	if m != nil && m.GoPackage != nil {
+		return *m.GoPackage
+	}
+	return ""
+}
+
+func (m *FileOptions) GetCcGenericServices() bool {
+	if m != nil && m.CcGenericServices != nil {
+		return *m.CcGenericServices
+	}
+	return Default_FileOptions_CcGenericServices
+}
+
+func (m *FileOptions) GetJavaGenericServices() bool {
+	if m != nil && m.JavaGenericServices != nil {
+		return *m.JavaGenericServices
+	}
+	return Default_FileOptions_JavaGenericServices
+}
+
+func (m *FileOptions) GetPyGenericServices() bool {
+	if m != nil && m.PyGenericServices != nil {
+		return *m.PyGenericServices
+	}
+	return Default_FileOptions_PyGenericServices
+}
+
+func (m *FileOptions) GetPhpGenericServices() bool {
+	if m != nil && m.PhpGenericServices != nil {
+		return *m.PhpGenericServices
+	}
+	return Default_FileOptions_PhpGenericServices
+}
+
+func (m *FileOptions) GetDeprecated() bool {
+	if m != nil && m.Deprecated != nil {
+		return *m.Deprecated
+	}
+	return Default_FileOptions_Deprecated
+}
+
+func (m *FileOptions) GetCcEnableArenas() bool {
+	if m != nil && m.CcEnableArenas != nil {
+		return *m.CcEnableArenas
+	}
+	return Default_FileOptions_CcEnableArenas
+}
+
+func (m *FileOptions) GetObjcClassPrefix() string {
+	if m != nil && m.ObjcClassPrefix != nil {
+		return *m.ObjcClassPrefix
+	}
+	return ""
+}
+
+func (m *FileOptions) GetCsharpNamespace() string {
+	if m != nil && m.CsharpNamespace != nil {
+		return *m.CsharpNamespace
+	}
+	return ""
+}
+
+func (m *FileOptions) GetSwiftPrefix() string {
+	if m != nil && m.SwiftPrefix != nil {
+		return *m.SwiftPrefix
+	}
+	return ""
+}
+
+func (m *FileOptions) GetPhpClassPrefix() string {
+	if m != nil && m.PhpClassPrefix != nil {
+		return *m.PhpClassPrefix
+	}
+	return ""
+}
+
+func (m *FileOptions) GetPhpNamespace() string {
+	if m != nil && m.PhpNamespace != nil {
+		return *m.PhpNamespace
+	}
+	return ""
+}
+
+func (m *FileOptions) GetUninterpretedOption() []*UninterpretedOption {
+	if m != nil {
+		return m.UninterpretedOption
+	}
+	return nil
+}
+
+type MessageOptions struct {
+	// Set true to use the old proto1 MessageSet wire format for extensions.
+	// This is provided for backwards-compatibility with the MessageSet wire
+	// format.  You should not use this for any other reason:  It's less
+	// efficient, has fewer features, and is more complicated.
+	//
+	// The message must be defined exactly as follows:
+	//   message Foo {
+	//     option message_set_wire_format = true;
+	//     extensions 4 to max;
+	//   }
+	// Note that the message cannot have any defined fields; MessageSets only
+	// have extensions.
+	//
+	// All extensions of your type must be singular messages; e.g. they cannot
+	// be int32s, enums, or repeated messages.
+	//
+	// Because this is an option, the above two restrictions are not enforced by
+	// the protocol compiler.
+	MessageSetWireFormat *bool `protobuf:"varint,1,opt,name=message_set_wire_format,json=messageSetWireFormat,def=0" json:"message_set_wire_format,omitempty"`
+	// Disables the generation of the standard "descriptor()" accessor, which can
+	// conflict with a field of the same name.  This is meant to make migration
+	// from proto1 easier; new code should avoid fields named "descriptor".
+	NoStandardDescriptorAccessor *bool `protobuf:"varint,2,opt,name=no_standard_descriptor_accessor,json=noStandardDescriptorAccessor,def=0" json:"no_standard_descriptor_accessor,omitempty"`
+	// Is this message deprecated?
+	// Depending on the target platform, this can emit Deprecated annotations
+	// for the message, or it will be completely ignored; in the very least,
+	// this is a formalization for deprecating messages.
+	Deprecated *bool `protobuf:"varint,3,opt,name=deprecated,def=0" json:"deprecated,omitempty"`
+	// Whether the message is an automatically generated map entry type for the
+	// maps field.
+	//
+	// For maps fields:
+	//     map<KeyType, ValueType> map_field = 1;
+	// The parsed descriptor looks like:
+	//     message MapFieldEntry {
+	//         option map_entry = true;
+	//         optional KeyType key = 1;
+	//         optional ValueType value = 2;
+	//     }
+	//     repeated MapFieldEntry map_field = 1;
+	//
+	// Implementations may choose not to generate the map_entry=true message, but
+	// use a native map in the target language to hold the keys and values.
+	// The reflection APIs in such implementions still need to work as
+	// if the field is a repeated message field.
+	//
+	// NOTE: Do not set the option in .proto files. Always use the maps syntax
+	// instead. The option should only be implicitly set by the proto compiler
+	// parser.
+	MapEntry *bool `protobuf:"varint,7,opt,name=map_entry,json=mapEntry" json:"map_entry,omitempty"`
+	// The parser stores options it doesn't recognize here. See above.
+	UninterpretedOption          []*UninterpretedOption `protobuf:"bytes,999,rep,name=uninterpreted_option,json=uninterpretedOption" json:"uninterpreted_option,omitempty"`
+	proto.XXX_InternalExtensions `json:"-"`
+	XXX_unrecognized             []byte `json:"-"`
+}
+
+func (m *MessageOptions) Reset()                    { *m = MessageOptions{} }
+func (m *MessageOptions) String() string            { return proto.CompactTextString(m) }
+func (*MessageOptions) ProtoMessage()               {}
+func (*MessageOptions) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{11} }
+
+var extRange_MessageOptions = []proto.ExtensionRange{
+	{1000, 536870911},
+}
+
+func (*MessageOptions) ExtensionRangeArray() []proto.ExtensionRange {
+	return extRange_MessageOptions
+}
+
+const Default_MessageOptions_MessageSetWireFormat bool = false
+const Default_MessageOptions_NoStandardDescriptorAccessor bool = false
+const Default_MessageOptions_Deprecated bool = false
+
+func (m *MessageOptions) GetMessageSetWireFormat() bool {
+	if m != nil && m.MessageSetWireFormat != nil {
+		return *m.MessageSetWireFormat
+	}
+	return Default_MessageOptions_MessageSetWireFormat
+}
+
+func (m *MessageOptions) GetNoStandardDescriptorAccessor() bool {
+	if m != nil && m.NoStandardDescriptorAccessor != nil {
+		return *m.NoStandardDescriptorAccessor
+	}
+	return Default_MessageOptions_NoStandardDescriptorAccessor
+}
+
+func (m *MessageOptions) GetDeprecated() bool {
+	if m != nil && m.Deprecated != nil {
+		return *m.Deprecated
+	}
+	return Default_MessageOptions_Deprecated
+}
+
+func (m *MessageOptions) GetMapEntry() bool {
+	if m != nil && m.MapEntry != nil {
+		return *m.MapEntry
+	}
+	return false
+}
+
+func (m *MessageOptions) GetUninterpretedOption() []*UninterpretedOption {
+	if m != nil {
+		return m.UninterpretedOption
+	}
+	return nil
+}
+
+type FieldOptions struct {
+	// The ctype option instructs the C++ code generator to use a different
+	// representation of the field than it normally would.  See the specific
+	// options below.  This option is not yet implemented in the open source
+	// release -- sorry, we'll try to include it in a future version!
+	Ctype *FieldOptions_CType `protobuf:"varint,1,opt,name=ctype,enum=google.protobuf.FieldOptions_CType,def=0" json:"ctype,omitempty"`
+	// The packed option can be enabled for repeated primitive fields to enable
+	// a more efficient representation on the wire. Rather than repeatedly
+	// writing the tag and type for each element, the entire array is encoded as
+	// a single length-delimited blob. In proto3, only explicit setting it to
+	// false will avoid using packed encoding.
+	Packed *bool `protobuf:"varint,2,opt,name=packed" json:"packed,omitempty"`
+	// The jstype option determines the JavaScript type used for values of the
+	// field.  The option is permitted only for 64 bit integral and fixed types
+	// (int64, uint64, sint64, fixed64, sfixed64).  A field with jstype JS_STRING
+	// is represented as JavaScript string, which avoids loss of precision that
+	// can happen when a large value is converted to a floating point JavaScript.
+	// Specifying JS_NUMBER for the jstype causes the generated JavaScript code to
+	// use the JavaScript "number" type.  The behavior of the default option
+	// JS_NORMAL is implementation dependent.
+	//
+	// This option is an enum to permit additional types to be added, e.g.
+	// goog.math.Integer.
+	Jstype *FieldOptions_JSType `protobuf:"varint,6,opt,name=jstype,enum=google.protobuf.FieldOptions_JSType,def=0" json:"jstype,omitempty"`
+	// Should this field be parsed lazily?  Lazy applies only to message-type
+	// fields.  It means that when the outer message is initially parsed, the
+	// inner message's contents will not be parsed but instead stored in encoded
+	// form.  The inner message will actually be parsed when it is first accessed.
+	//
+	// This is only a hint.  Implementations are free to choose whether to use
+	// eager or lazy parsing regardless of the value of this option.  However,
+	// setting this option true suggests that the protocol author believes that
+	// using lazy parsing on this field is worth the additional bookkeeping
+	// overhead typically needed to implement it.
+	//
+	// This option does not affect the public interface of any generated code;
+	// all method signatures remain the same.  Furthermore, thread-safety of the
+	// interface is not affected by this option; const methods remain safe to
+	// call from multiple threads concurrently, while non-const methods continue
+	// to require exclusive access.
+	//
+	//
+	// Note that implementations may choose not to check required fields within
+	// a lazy sub-message.  That is, calling IsInitialized() on the outer message
+	// may return true even if the inner message has missing required fields.
+	// This is necessary because otherwise the inner message would have to be
+	// parsed in order to perform the check, defeating the purpose of lazy
+	// parsing.  An implementation which chooses not to check required fields
+	// must be consistent about it.  That is, for any particular sub-message, the
+	// implementation must either *always* check its required fields, or *never*
+	// check its required fields, regardless of whether or not the message has
+	// been parsed.
+	Lazy *bool `protobuf:"varint,5,opt,name=lazy,def=0" json:"lazy,omitempty"`
+	// Is this field deprecated?
+	// Depending on the target platform, this can emit Deprecated annotations
+	// for accessors, or it will be completely ignored; in the very least, this
+	// is a formalization for deprecating fields.
+	Deprecated *bool `protobuf:"varint,3,opt,name=deprecated,def=0" json:"deprecated,omitempty"`
+	// For Google-internal migration only. Do not use.
+	Weak *bool `protobuf:"varint,10,opt,name=weak,def=0" json:"weak,omitempty"`
+	// The parser stores options it doesn't recognize here. See above.
+	UninterpretedOption          []*UninterpretedOption `protobuf:"bytes,999,rep,name=uninterpreted_option,json=uninterpretedOption" json:"uninterpreted_option,omitempty"`
+	proto.XXX_InternalExtensions `json:"-"`
+	XXX_unrecognized             []byte `json:"-"`
+}
+
+func (m *FieldOptions) Reset()                    { *m = FieldOptions{} }
+func (m *FieldOptions) String() string            { return proto.CompactTextString(m) }
+func (*FieldOptions) ProtoMessage()               {}
+func (*FieldOptions) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{12} }
+
+var extRange_FieldOptions = []proto.ExtensionRange{
+	{1000, 536870911},
+}
+
+func (*FieldOptions) ExtensionRangeArray() []proto.ExtensionRange {
+	return extRange_FieldOptions
+}
+
+const Default_FieldOptions_Ctype FieldOptions_CType = FieldOptions_STRING
+const Default_FieldOptions_Jstype FieldOptions_JSType = FieldOptions_JS_NORMAL
+const Default_FieldOptions_Lazy bool = false
+const Default_FieldOptions_Deprecated bool = false
+const Default_FieldOptions_Weak bool = false
+
+func (m *FieldOptions) GetCtype() FieldOptions_CType {
+	if m != nil && m.Ctype != nil {
+		return *m.Ctype
+	}
+	return Default_FieldOptions_Ctype
+}
+
+func (m *FieldOptions) GetPacked() bool {
+	if m != nil && m.Packed != nil {
+		return *m.Packed
+	}
+	return false
+}
+
+func (m *FieldOptions) GetJstype() FieldOptions_JSType {
+	if m != nil && m.Jstype != nil {
+		return *m.Jstype
+	}
+	return Default_FieldOptions_Jstype
+}
+
+func (m *FieldOptions) GetLazy() bool {
+	if m != nil && m.Lazy != nil {
+		return *m.Lazy
+	}
+	return Default_FieldOptions_Lazy
+}
+
+func (m *FieldOptions) GetDeprecated() bool {
+	if m != nil && m.Deprecated != nil {
+		return *m.Deprecated
+	}
+	return Default_FieldOptions_Deprecated
+}
+
+func (m *FieldOptions) GetWeak() bool {
+	if m != nil && m.Weak != nil {
+		return *m.Weak
+	}
+	return Default_FieldOptions_Weak
+}
+
+func (m *FieldOptions) GetUninterpretedOption() []*UninterpretedOption {
+	if m != nil {
+		return m.UninterpretedOption
+	}
+	return nil
+}
+
+type OneofOptions struct {
+	// The parser stores options it doesn't recognize here. See above.
+	UninterpretedOption          []*UninterpretedOption `protobuf:"bytes,999,rep,name=uninterpreted_option,json=uninterpretedOption" json:"uninterpreted_option,omitempty"`
+	proto.XXX_InternalExtensions `json:"-"`
+	XXX_unrecognized             []byte `json:"-"`
+}
+
+func (m *OneofOptions) Reset()                    { *m = OneofOptions{} }
+func (m *OneofOptions) String() string            { return proto.CompactTextString(m) }
+func (*OneofOptions) ProtoMessage()               {}
+func (*OneofOptions) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{13} }
+
+var extRange_OneofOptions = []proto.ExtensionRange{
+	{1000, 536870911},
+}
+
+func (*OneofOptions) ExtensionRangeArray() []proto.ExtensionRange {
+	return extRange_OneofOptions
+}
+
+func (m *OneofOptions) GetUninterpretedOption() []*UninterpretedOption {
+	if m != nil {
+		return m.UninterpretedOption
+	}
+	return nil
+}
+
+type EnumOptions struct {
+	// Set this option to true to allow mapping different tag names to the same
+	// value.
+	AllowAlias *bool `protobuf:"varint,2,opt,name=allow_alias,json=allowAlias" json:"allow_alias,omitempty"`
+	// Is this enum deprecated?
+	// Depending on the target platform, this can emit Deprecated annotations
+	// for the enum, or it will be completely ignored; in the very least, this
+	// is a formalization for deprecating enums.
+	Deprecated *bool `protobuf:"varint,3,opt,name=deprecated,def=0" json:"deprecated,omitempty"`
+	// The parser stores options it doesn't recognize here. See above.
+	UninterpretedOption          []*UninterpretedOption `protobuf:"bytes,999,rep,name=uninterpreted_option,json=uninterpretedOption" json:"uninterpreted_option,omitempty"`
+	proto.XXX_InternalExtensions `json:"-"`
+	XXX_unrecognized             []byte `json:"-"`
+}
+
+func (m *EnumOptions) Reset()                    { *m = EnumOptions{} }
+func (m *EnumOptions) String() string            { return proto.CompactTextString(m) }
+func (*EnumOptions) ProtoMessage()               {}
+func (*EnumOptions) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{14} }
+
+var extRange_EnumOptions = []proto.ExtensionRange{
+	{1000, 536870911},
+}
+
+func (*EnumOptions) ExtensionRangeArray() []proto.ExtensionRange {
+	return extRange_EnumOptions
+}
+
+const Default_EnumOptions_Deprecated bool = false
+
+func (m *EnumOptions) GetAllowAlias() bool {
+	if m != nil && m.AllowAlias != nil {
+		return *m.AllowAlias
+	}
+	return false
+}
+
+func (m *EnumOptions) GetDeprecated() bool {
+	if m != nil && m.Deprecated != nil {
+		return *m.Deprecated
+	}
+	return Default_EnumOptions_Deprecated
+}
+
+func (m *EnumOptions) GetUninterpretedOption() []*UninterpretedOption {
+	if m != nil {
+		return m.UninterpretedOption
+	}
+	return nil
+}
+
+type EnumValueOptions struct {
+	// Is this enum value deprecated?
+	// Depending on the target platform, this can emit Deprecated annotations
+	// for the enum value, or it will be completely ignored; in the very least,
+	// this is a formalization for deprecating enum values.
+	Deprecated *bool `protobuf:"varint,1,opt,name=deprecated,def=0" json:"deprecated,omitempty"`
+	// The parser stores options it doesn't recognize here. See above.
+	UninterpretedOption          []*UninterpretedOption `protobuf:"bytes,999,rep,name=uninterpreted_option,json=uninterpretedOption" json:"uninterpreted_option,omitempty"`
+	proto.XXX_InternalExtensions `json:"-"`
+	XXX_unrecognized             []byte `json:"-"`
+}
+
+func (m *EnumValueOptions) Reset()                    { *m = EnumValueOptions{} }
+func (m *EnumValueOptions) String() string            { return proto.CompactTextString(m) }
+func (*EnumValueOptions) ProtoMessage()               {}
+func (*EnumValueOptions) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{15} }
+
+var extRange_EnumValueOptions = []proto.ExtensionRange{
+	{1000, 536870911},
+}
+
+func (*EnumValueOptions) ExtensionRangeArray() []proto.ExtensionRange {
+	return extRange_EnumValueOptions
+}
+
+const Default_EnumValueOptions_Deprecated bool = false
+
+func (m *EnumValueOptions) GetDeprecated() bool {
+	if m != nil && m.Deprecated != nil {
+		return *m.Deprecated
+	}
+	return Default_EnumValueOptions_Deprecated
+}
+
+func (m *EnumValueOptions) GetUninterpretedOption() []*UninterpretedOption {
+	if m != nil {
+		return m.UninterpretedOption
+	}
+	return nil
+}
+
+type ServiceOptions struct {
+	// Is this service deprecated?
+	// Depending on the target platform, this can emit Deprecated annotations
+	// for the service, or it will be completely ignored; in the very least,
+	// this is a formalization for deprecating services.
+	Deprecated *bool `protobuf:"varint,33,opt,name=deprecated,def=0" json:"deprecated,omitempty"`
+	// The parser stores options it doesn't recognize here. See above.
+	UninterpretedOption          []*UninterpretedOption `protobuf:"bytes,999,rep,name=uninterpreted_option,json=uninterpretedOption" json:"uninterpreted_option,omitempty"`
+	proto.XXX_InternalExtensions `json:"-"`
+	XXX_unrecognized             []byte `json:"-"`
+}
+
+func (m *ServiceOptions) Reset()                    { *m = ServiceOptions{} }
+func (m *ServiceOptions) String() string            { return proto.CompactTextString(m) }
+func (*ServiceOptions) ProtoMessage()               {}
+func (*ServiceOptions) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{16} }
+
+var extRange_ServiceOptions = []proto.ExtensionRange{
+	{1000, 536870911},
+}
+
+func (*ServiceOptions) ExtensionRangeArray() []proto.ExtensionRange {
+	return extRange_ServiceOptions
+}
+
+const Default_ServiceOptions_Deprecated bool = false
+
+func (m *ServiceOptions) GetDeprecated() bool {
+	if m != nil && m.Deprecated != nil {
+		return *m.Deprecated
+	}
+	return Default_ServiceOptions_Deprecated
+}
+
+func (m *ServiceOptions) GetUninterpretedOption() []*UninterpretedOption {
+	if m != nil {
+		return m.UninterpretedOption
+	}
+	return nil
+}
+
+type MethodOptions struct {
+	// Is this method deprecated?
+	// Depending on the target platform, this can emit Deprecated annotations
+	// for the method, or it will be completely ignored; in the very least,
+	// this is a formalization for deprecating methods.
+	Deprecated       *bool                           `protobuf:"varint,33,opt,name=deprecated,def=0" json:"deprecated,omitempty"`
+	IdempotencyLevel *MethodOptions_IdempotencyLevel `protobuf:"varint,34,opt,name=idempotency_level,json=idempotencyLevel,enum=google.protobuf.MethodOptions_IdempotencyLevel,def=0" json:"idempotency_level,omitempty"`
+	// The parser stores options it doesn't recognize here. See above.
+	UninterpretedOption          []*UninterpretedOption `protobuf:"bytes,999,rep,name=uninterpreted_option,json=uninterpretedOption" json:"uninterpreted_option,omitempty"`
+	proto.XXX_InternalExtensions `json:"-"`
+	XXX_unrecognized             []byte `json:"-"`
+}
+
+func (m *MethodOptions) Reset()                    { *m = MethodOptions{} }
+func (m *MethodOptions) String() string            { return proto.CompactTextString(m) }
+func (*MethodOptions) ProtoMessage()               {}
+func (*MethodOptions) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{17} }
+
+var extRange_MethodOptions = []proto.ExtensionRange{
+	{1000, 536870911},
+}
+
+func (*MethodOptions) ExtensionRangeArray() []proto.ExtensionRange {
+	return extRange_MethodOptions
+}
+
+const Default_MethodOptions_Deprecated bool = false
+const Default_MethodOptions_IdempotencyLevel MethodOptions_IdempotencyLevel = MethodOptions_IDEMPOTENCY_UNKNOWN
+
+func (m *MethodOptions) GetDeprecated() bool {
+	if m != nil && m.Deprecated != nil {
+		return *m.Deprecated
+	}
+	return Default_MethodOptions_Deprecated
+}
+
+func (m *MethodOptions) GetIdempotencyLevel() MethodOptions_IdempotencyLevel {
+	if m != nil && m.IdempotencyLevel != nil {
+		return *m.IdempotencyLevel
+	}
+	return Default_MethodOptions_IdempotencyLevel
+}
+
+func (m *MethodOptions) GetUninterpretedOption() []*UninterpretedOption {
+	if m != nil {
+		return m.UninterpretedOption
+	}
+	return nil
+}
+
+// A message representing a option the parser does not recognize. This only
+// appears in options protos created by the compiler::Parser class.
+// DescriptorPool resolves these when building Descriptor objects. Therefore,
+// options protos in descriptor objects (e.g. returned by Descriptor::options(),
+// or produced by Descriptor::CopyTo()) will never have UninterpretedOptions
+// in them.
+type UninterpretedOption struct {
+	Name []*UninterpretedOption_NamePart `protobuf:"bytes,2,rep,name=name" json:"name,omitempty"`
+	// The value of the uninterpreted option, in whatever type the tokenizer
+	// identified it as during parsing. Exactly one of these should be set.
+	IdentifierValue  *string  `protobuf:"bytes,3,opt,name=identifier_value,json=identifierValue" json:"identifier_value,omitempty"`
+	PositiveIntValue *uint64  `protobuf:"varint,4,opt,name=positive_int_value,json=positiveIntValue" json:"positive_int_value,omitempty"`
+	NegativeIntValue *int64   `protobuf:"varint,5,opt,name=negative_int_value,json=negativeIntValue" json:"negative_int_value,omitempty"`
+	DoubleValue      *float64 `protobuf:"fixed64,6,opt,name=double_value,json=doubleValue" json:"double_value,omitempty"`
+	StringValue      []byte   `protobuf:"bytes,7,opt,name=string_value,json=stringValue" json:"string_value,omitempty"`
+	AggregateValue   *string  `protobuf:"bytes,8,opt,name=aggregate_value,json=aggregateValue" json:"aggregate_value,omitempty"`
+	XXX_unrecognized []byte   `json:"-"`
+}
+
+func (m *UninterpretedOption) Reset()                    { *m = UninterpretedOption{} }
+func (m *UninterpretedOption) String() string            { return proto.CompactTextString(m) }
+func (*UninterpretedOption) ProtoMessage()               {}
+func (*UninterpretedOption) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{18} }
+
+func (m *UninterpretedOption) GetName() []*UninterpretedOption_NamePart {
+	if m != nil {
+		return m.Name
+	}
+	return nil
+}
+
+func (m *UninterpretedOption) GetIdentifierValue() string {
+	if m != nil && m.IdentifierValue != nil {
+		return *m.IdentifierValue
+	}
+	return ""
+}
+
+func (m *UninterpretedOption) GetPositiveIntValue() uint64 {
+	if m != nil && m.PositiveIntValue != nil {
+		return *m.PositiveIntValue
+	}
+	return 0
+}
+
+func (m *UninterpretedOption) GetNegativeIntValue() int64 {
+	if m != nil && m.NegativeIntValue != nil {
+		return *m.NegativeIntValue
+	}
+	return 0
+}
+
+func (m *UninterpretedOption) GetDoubleValue() float64 {
+	if m != nil && m.DoubleValue != nil {
+		return *m.DoubleValue
+	}
+	return 0
+}
+
+func (m *UninterpretedOption) GetStringValue() []byte {
+	if m != nil {
+		return m.StringValue
+	}
+	return nil
+}
+
+func (m *UninterpretedOption) GetAggregateValue() string {
+	if m != nil && m.AggregateValue != nil {
+		return *m.AggregateValue
+	}
+	return ""
+}
+
+// The name of the uninterpreted option.  Each string represents a segment in
+// a dot-separated name.  is_extension is true iff a segment represents an
+// extension (denoted with parentheses in options specs in .proto files).
+// E.g.,{ ["foo", false], ["bar.baz", true], ["qux", false] } represents
+// "foo.(bar.baz).qux".
+type UninterpretedOption_NamePart struct {
+	NamePart         *string `protobuf:"bytes,1,req,name=name_part,json=namePart" json:"name_part,omitempty"`
+	IsExtension      *bool   `protobuf:"varint,2,req,name=is_extension,json=isExtension" json:"is_extension,omitempty"`
+	XXX_unrecognized []byte  `json:"-"`
+}
+
+func (m *UninterpretedOption_NamePart) Reset()         { *m = UninterpretedOption_NamePart{} }
+func (m *UninterpretedOption_NamePart) String() string { return proto.CompactTextString(m) }
+func (*UninterpretedOption_NamePart) ProtoMessage()    {}
+func (*UninterpretedOption_NamePart) Descriptor() ([]byte, []int) {
+	return fileDescriptor0, []int{18, 0}
+}
+
+func (m *UninterpretedOption_NamePart) GetNamePart() string {
+	if m != nil && m.NamePart != nil {
+		return *m.NamePart
+	}
+	return ""
+}
+
+func (m *UninterpretedOption_NamePart) GetIsExtension() bool {
+	if m != nil && m.IsExtension != nil {
+		return *m.IsExtension
+	}
+	return false
+}
+
+// Encapsulates information about the original source file from which a
+// FileDescriptorProto was generated.
+type SourceCodeInfo struct {
+	// A Location identifies a piece of source code in a .proto file which
+	// corresponds to a particular definition.  This information is intended
+	// to be useful to IDEs, code indexers, documentation generators, and similar
+	// tools.
+	//
+	// For example, say we have a file like:
+	//   message Foo {
+	//     optional string foo = 1;
+	//   }
+	// Let's look at just the field definition:
+	//   optional string foo = 1;
+	//   ^       ^^     ^^  ^  ^^^
+	//   a       bc     de  f  ghi
+	// We have the following locations:
+	//   span   path               represents
+	//   [a,i)  [ 4, 0, 2, 0 ]     The whole field definition.
+	//   [a,b)  [ 4, 0, 2, 0, 4 ]  The label (optional).
+	//   [c,d)  [ 4, 0, 2, 0, 5 ]  The type (string).
+	//   [e,f)  [ 4, 0, 2, 0, 1 ]  The name (foo).
+	//   [g,h)  [ 4, 0, 2, 0, 3 ]  The number (1).
+	//
+	// Notes:
+	// - A location may refer to a repeated field itself (i.e. not to any
+	//   particular index within it).  This is used whenever a set of elements are
+	//   logically enclosed in a single code segment.  For example, an entire
+	//   extend block (possibly containing multiple extension definitions) will
+	//   have an outer location whose path refers to the "extensions" repeated
+	//   field without an index.
+	// - Multiple locations may have the same path.  This happens when a single
+	//   logical declaration is spread out across multiple places.  The most
+	//   obvious example is the "extend" block again -- there may be multiple
+	//   extend blocks in the same scope, each of which will have the same path.
+	// - A location's span is not always a subset of its parent's span.  For
+	//   example, the "extendee" of an extension declaration appears at the
+	//   beginning of the "extend" block and is shared by all extensions within
+	//   the block.
+	// - Just because a location's span is a subset of some other location's span
+	//   does not mean that it is a descendent.  For example, a "group" defines
+	//   both a type and a field in a single declaration.  Thus, the locations
+	//   corresponding to the type and field and their components will overlap.
+	// - Code which tries to interpret locations should probably be designed to
+	//   ignore those that it doesn't understand, as more types of locations could
+	//   be recorded in the future.
+	Location         []*SourceCodeInfo_Location `protobuf:"bytes,1,rep,name=location" json:"location,omitempty"`
+	XXX_unrecognized []byte                     `json:"-"`
+}
+
+func (m *SourceCodeInfo) Reset()                    { *m = SourceCodeInfo{} }
+func (m *SourceCodeInfo) String() string            { return proto.CompactTextString(m) }
+func (*SourceCodeInfo) ProtoMessage()               {}
+func (*SourceCodeInfo) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{19} }
+
+func (m *SourceCodeInfo) GetLocation() []*SourceCodeInfo_Location {
+	if m != nil {
+		return m.Location
+	}
+	return nil
+}
+
+type SourceCodeInfo_Location struct {
+	// Identifies which part of the FileDescriptorProto was defined at this
+	// location.
+	//
+	// Each element is a field number or an index.  They form a path from
+	// the root FileDescriptorProto to the place where the definition.  For
+	// example, this path:
+	//   [ 4, 3, 2, 7, 1 ]
+	// refers to:
+	//   file.message_type(3)  // 4, 3
+	//       .field(7)         // 2, 7
+	//       .name()           // 1
+	// This is because FileDescriptorProto.message_type has field number 4:
+	//   repeated DescriptorProto message_type = 4;
+	// and DescriptorProto.field has field number 2:
+	//   repeated FieldDescriptorProto field = 2;
+	// and FieldDescriptorProto.name has field number 1:
+	//   optional string name = 1;
+	//
+	// Thus, the above path gives the location of a field name.  If we removed
+	// the last element:
+	//   [ 4, 3, 2, 7 ]
+	// this path refers to the whole field declaration (from the beginning
+	// of the label to the terminating semicolon).
+	Path []int32 `protobuf:"varint,1,rep,packed,name=path" json:"path,omitempty"`
+	// Always has exactly three or four elements: start line, start column,
+	// end line (optional, otherwise assumed same as start line), end column.
+	// These are packed into a single field for efficiency.  Note that line
+	// and column numbers are zero-based -- typically you will want to add
+	// 1 to each before displaying to a user.
+	Span []int32 `protobuf:"varint,2,rep,packed,name=span" json:"span,omitempty"`
+	// If this SourceCodeInfo represents a complete declaration, these are any
+	// comments appearing before and after the declaration which appear to be
+	// attached to the declaration.
+	//
+	// A series of line comments appearing on consecutive lines, with no other
+	// tokens appearing on those lines, will be treated as a single comment.
+	//
+	// leading_detached_comments will keep paragraphs of comments that appear
+	// before (but not connected to) the current element. Each paragraph,
+	// separated by empty lines, will be one comment element in the repeated
+	// field.
+	//
+	// Only the comment content is provided; comment markers (e.g. //) are
+	// stripped out.  For block comments, leading whitespace and an asterisk
+	// will be stripped from the beginning of each line other than the first.
+	// Newlines are included in the output.
+	//
+	// Examples:
+	//
+	//   optional int32 foo = 1;  // Comment attached to foo.
+	//   // Comment attached to bar.
+	//   optional int32 bar = 2;
+	//
+	//   optional string baz = 3;
+	//   // Comment attached to baz.
+	//   // Another line attached to baz.
+	//
+	//   // Comment attached to qux.
+	//   //
+	//   // Another line attached to qux.
+	//   optional double qux = 4;
+	//
+	//   // Detached comment for corge. This is not leading or trailing comments
+	//   // to qux or corge because there are blank lines separating it from
+	//   // both.
+	//
+	//   // Detached comment for corge paragraph 2.
+	//
+	//   optional string corge = 5;
+	//   /* Block comment attached
+	//    * to corge.  Leading asterisks
+	//    * will be removed. */
+	//   /* Block comment attached to
+	//    * grault. */
+	//   optional int32 grault = 6;
+	//
+	//   // ignored detached comments.
+	LeadingComments         *string  `protobuf:"bytes,3,opt,name=leading_comments,json=leadingComments" json:"leading_comments,omitempty"`
+	TrailingComments        *string  `protobuf:"bytes,4,opt,name=trailing_comments,json=trailingComments" json:"trailing_comments,omitempty"`
+	LeadingDetachedComments []string `protobuf:"bytes,6,rep,name=leading_detached_comments,json=leadingDetachedComments" json:"leading_detached_comments,omitempty"`
+	XXX_unrecognized        []byte   `json:"-"`
+}
+
+func (m *SourceCodeInfo_Location) Reset()                    { *m = SourceCodeInfo_Location{} }
+func (m *SourceCodeInfo_Location) String() string            { return proto.CompactTextString(m) }
+func (*SourceCodeInfo_Location) ProtoMessage()               {}
+func (*SourceCodeInfo_Location) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{19, 0} }
+
+func (m *SourceCodeInfo_Location) GetPath() []int32 {
+	if m != nil {
+		return m.Path
+	}
+	return nil
+}
+
+func (m *SourceCodeInfo_Location) GetSpan() []int32 {
+	if m != nil {
+		return m.Span
+	}
+	return nil
+}
+
+func (m *SourceCodeInfo_Location) GetLeadingComments() string {
+	if m != nil && m.LeadingComments != nil {
+		return *m.LeadingComments
+	}
+	return ""
+}
+
+func (m *SourceCodeInfo_Location) GetTrailingComments() string {
+	if m != nil && m.TrailingComments != nil {
+		return *m.TrailingComments
+	}
+	return ""
+}
+
+func (m *SourceCodeInfo_Location) GetLeadingDetachedComments() []string {
+	if m != nil {
+		return m.LeadingDetachedComments
+	}
+	return nil
+}
+
+// Describes the relationship between generated code and its original source
+// file. A GeneratedCodeInfo message is associated with only one generated
+// source file, but may contain references to different source .proto files.
+type GeneratedCodeInfo struct {
+	// An Annotation connects some span of text in generated code to an element
+	// of its generating .proto file.
+	Annotation       []*GeneratedCodeInfo_Annotation `protobuf:"bytes,1,rep,name=annotation" json:"annotation,omitempty"`
+	XXX_unrecognized []byte                          `json:"-"`
+}
+
+func (m *GeneratedCodeInfo) Reset()                    { *m = GeneratedCodeInfo{} }
+func (m *GeneratedCodeInfo) String() string            { return proto.CompactTextString(m) }
+func (*GeneratedCodeInfo) ProtoMessage()               {}
+func (*GeneratedCodeInfo) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{20} }
+
+func (m *GeneratedCodeInfo) GetAnnotation() []*GeneratedCodeInfo_Annotation {
+	if m != nil {
+		return m.Annotation
+	}
+	return nil
+}
+
+type GeneratedCodeInfo_Annotation struct {
+	// Identifies the element in the original source .proto file. This field
+	// is formatted the same as SourceCodeInfo.Location.path.
+	Path []int32 `protobuf:"varint,1,rep,packed,name=path" json:"path,omitempty"`
+	// Identifies the filesystem path to the original source .proto.
+	SourceFile *string `protobuf:"bytes,2,opt,name=source_file,json=sourceFile" json:"source_file,omitempty"`
+	// Identifies the starting offset in bytes in the generated code
+	// that relates to the identified object.
+	Begin *int32 `protobuf:"varint,3,opt,name=begin" json:"begin,omitempty"`
+	// Identifies the ending offset in bytes in the generated code that
+	// relates to the identified offset. The end offset should be one past
+	// the last relevant byte (so the length of the text = end - begin).
+	End              *int32 `protobuf:"varint,4,opt,name=end" json:"end,omitempty"`
+	XXX_unrecognized []byte `json:"-"`
+}
+
+func (m *GeneratedCodeInfo_Annotation) Reset()         { *m = GeneratedCodeInfo_Annotation{} }
+func (m *GeneratedCodeInfo_Annotation) String() string { return proto.CompactTextString(m) }
+func (*GeneratedCodeInfo_Annotation) ProtoMessage()    {}
+func (*GeneratedCodeInfo_Annotation) Descriptor() ([]byte, []int) {
+	return fileDescriptor0, []int{20, 0}
+}
+
+func (m *GeneratedCodeInfo_Annotation) GetPath() []int32 {
+	if m != nil {
+		return m.Path
+	}
+	return nil
+}
+
+func (m *GeneratedCodeInfo_Annotation) GetSourceFile() string {
+	if m != nil && m.SourceFile != nil {
+		return *m.SourceFile
+	}
+	return ""
+}
+
+func (m *GeneratedCodeInfo_Annotation) GetBegin() int32 {
+	if m != nil && m.Begin != nil {
+		return *m.Begin
+	}
+	return 0
+}
+
+func (m *GeneratedCodeInfo_Annotation) GetEnd() int32 {
+	if m != nil && m.End != nil {
+		return *m.End
+	}
+	return 0
+}
+
+func init() {
+	proto.RegisterType((*FileDescriptorSet)(nil), "google.protobuf.FileDescriptorSet")
+	proto.RegisterType((*FileDescriptorProto)(nil), "google.protobuf.FileDescriptorProto")
+	proto.RegisterType((*DescriptorProto)(nil), "google.protobuf.DescriptorProto")
+	proto.RegisterType((*DescriptorProto_ExtensionRange)(nil), "google.protobuf.DescriptorProto.ExtensionRange")
+	proto.RegisterType((*DescriptorProto_ReservedRange)(nil), "google.protobuf.DescriptorProto.ReservedRange")
+	proto.RegisterType((*ExtensionRangeOptions)(nil), "google.protobuf.ExtensionRangeOptions")
+	proto.RegisterType((*FieldDescriptorProto)(nil), "google.protobuf.FieldDescriptorProto")
+	proto.RegisterType((*OneofDescriptorProto)(nil), "google.protobuf.OneofDescriptorProto")
+	proto.RegisterType((*EnumDescriptorProto)(nil), "google.protobuf.EnumDescriptorProto")
+	proto.RegisterType((*EnumValueDescriptorProto)(nil), "google.protobuf.EnumValueDescriptorProto")
+	proto.RegisterType((*ServiceDescriptorProto)(nil), "google.protobuf.ServiceDescriptorProto")
+	proto.RegisterType((*MethodDescriptorProto)(nil), "google.protobuf.MethodDescriptorProto")
+	proto.RegisterType((*FileOptions)(nil), "google.protobuf.FileOptions")
+	proto.RegisterType((*MessageOptions)(nil), "google.protobuf.MessageOptions")
+	proto.RegisterType((*FieldOptions)(nil), "google.protobuf.FieldOptions")
+	proto.RegisterType((*OneofOptions)(nil), "google.protobuf.OneofOptions")
+	proto.RegisterType((*EnumOptions)(nil), "google.protobuf.EnumOptions")
+	proto.RegisterType((*EnumValueOptions)(nil), "google.protobuf.EnumValueOptions")
+	proto.RegisterType((*ServiceOptions)(nil), "google.protobuf.ServiceOptions")
+	proto.RegisterType((*MethodOptions)(nil), "google.protobuf.MethodOptions")
+	proto.RegisterType((*UninterpretedOption)(nil), "google.protobuf.UninterpretedOption")
+	proto.RegisterType((*UninterpretedOption_NamePart)(nil), "google.protobuf.UninterpretedOption.NamePart")
+	proto.RegisterType((*SourceCodeInfo)(nil), "google.protobuf.SourceCodeInfo")
+	proto.RegisterType((*SourceCodeInfo_Location)(nil), "google.protobuf.SourceCodeInfo.Location")
+	proto.RegisterType((*GeneratedCodeInfo)(nil), "google.protobuf.GeneratedCodeInfo")
+	proto.RegisterType((*GeneratedCodeInfo_Annotation)(nil), "google.protobuf.GeneratedCodeInfo.Annotation")
+	proto.RegisterEnum("google.protobuf.FieldDescriptorProto_Type", FieldDescriptorProto_Type_name, FieldDescriptorProto_Type_value)
+	proto.RegisterEnum("google.protobuf.FieldDescriptorProto_Label", FieldDescriptorProto_Label_name, FieldDescriptorProto_Label_value)
+	proto.RegisterEnum("google.protobuf.FileOptions_OptimizeMode", FileOptions_OptimizeMode_name, FileOptions_OptimizeMode_value)
+	proto.RegisterEnum("google.protobuf.FieldOptions_CType", FieldOptions_CType_name, FieldOptions_CType_value)
+	proto.RegisterEnum("google.protobuf.FieldOptions_JSType", FieldOptions_JSType_name, FieldOptions_JSType_value)
+	proto.RegisterEnum("google.protobuf.MethodOptions_IdempotencyLevel", MethodOptions_IdempotencyLevel_name, MethodOptions_IdempotencyLevel_value)
+}
+
+func init() { proto.RegisterFile("google/protobuf/descriptor.proto", fileDescriptor0) }
+
+var fileDescriptor0 = []byte{
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+	0xc2, 0x79, 0x0d, 0xf0, 0x46, 0x00, 0xe3, 0x77, 0x60, 0xd3, 0x77, 0x89, 0x61, 0x26, 0xb8, 0x59,
+	0xce, 0x45, 0xa1, 0x20, 0x22, 0x1f, 0xc2, 0xb5, 0xd0, 0xae, 0x4e, 0x7d, 0xa2, 0x8d, 0xa9, 0x3e,
+	0x53, 0xca, 0xf3, 0xf7, 0xd9, 0xab, 0x01, 0xa1, 0x19, 0xc8, 0x43, 0xdd, 0xea, 0x77, 0x29, 0xd8,
+	0x0c, 0xaf, 0x53, 0x7a, 0x14, 0xac, 0x53, 0x00, 0x62, 0x59, 0xb6, 0x1f, 0x0f, 0xd7, 0x62, 0x2a,
+	0x2f, 0xe8, 0xd5, 0xea, 0x91, 0x92, 0x12, 0x33, 0xb0, 0x33, 0x01, 0x98, 0x49, 0x56, 0x86, 0xed,
+	0x3a, 0x94, 0x82, 0xef, 0x23, 0xfc, 0x23, 0x9b, 0xb8, 0x80, 0x83, 0x80, 0xd8, 0xbd, 0x0b, 0x6f,
+	0x43, 0xee, 0x9c, 0x8e, 0x0c, 0x2b, 0x78, 0xf5, 0x14, 0x8d, 0xf0, 0x25, 0x37, 0x1b, 0xbd, 0xe4,
+	0x1e, 0xfd, 0x21, 0x05, 0x5b, 0x9a, 0x3d, 0x99, 0xf7, 0xf7, 0x08, 0xcd, 0xbd, 0x02, 0x78, 0x9f,
+	0xa4, 0xbe, 0xf8, 0x78, 0x64, 0xf8, 0xe3, 0xe9, 0x79, 0x4d, 0xb3, 0x27, 0xfb, 0x23, 0xdb, 0x24,
+	0xd6, 0x68, 0xf6, 0x95, 0x90, 0xff, 0xd1, 0xde, 0x1d, 0x51, 0xeb, 0xdd, 0x91, 0x1d, 0xfb, 0x66,
+	0xf8, 0xd1, 0xec, 0xef, 0xd7, 0xe9, 0xcc, 0x71, 0xef, 0xe8, 0xaf, 0xe9, 0x9d, 0x63, 0xd1, 0x57,
+	0x2f, 0x8c, 0x8d, 0x42, 0x87, 0x26, 0xd5, 0xd8, 0x78, 0xff, 0x17, 0x00, 0x00, 0xff, 0xff, 0x0c,
+	0xab, 0xb6, 0x37, 0x7e, 0x1c, 0x00, 0x00,
+}
diff --git a/vendor/github.com/golang/protobuf/protoc-gen-go/doc.go b/vendor/github.com/golang/protobuf/protoc-gen-go/doc.go
new file mode 100644
index 0000000..0d6055d
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/protoc-gen-go/doc.go
@@ -0,0 +1,51 @@
+// Go support for Protocol Buffers - Google's data interchange format
+//
+// Copyright 2010 The Go Authors.  All rights reserved.
+// https://github.com/golang/protobuf
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+/*
+	A plugin for the Google protocol buffer compiler to generate Go code.
+	Run it by building this program and putting it in your path with the name
+		protoc-gen-go
+	That word 'go' at the end becomes part of the option string set for the
+	protocol compiler, so once the protocol compiler (protoc) is installed
+	you can run
+		protoc --go_out=output_directory input_directory/file.proto
+	to generate Go bindings for the protocol defined by file.proto.
+	With that input, the output will be written to
+		output_directory/file.pb.go
+
+	The generated code is documented in the package comment for
+	the library.
+
+	See the README and documentation for protocol buffers to learn more:
+		https://developers.google.com/protocol-buffers/
+
+*/
+package documentation
diff --git a/vendor/github.com/golang/protobuf/protoc-gen-go/generator/generator.go b/vendor/github.com/golang/protobuf/protoc-gen-go/generator/generator.go
new file mode 100644
index 0000000..60d5246
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/protoc-gen-go/generator/generator.go
@@ -0,0 +1,2866 @@
+// Go support for Protocol Buffers - Google's data interchange format
+//
+// Copyright 2010 The Go Authors.  All rights reserved.
+// https://github.com/golang/protobuf
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+/*
+	The code generator for the plugin for the Google protocol buffer compiler.
+	It generates Go code from the protocol buffer description files read by the
+	main routine.
+*/
+package generator
+
+import (
+	"bufio"
+	"bytes"
+	"compress/gzip"
+	"fmt"
+	"go/parser"
+	"go/printer"
+	"go/token"
+	"log"
+	"os"
+	"path"
+	"strconv"
+	"strings"
+	"unicode"
+	"unicode/utf8"
+
+	"github.com/golang/protobuf/proto"
+
+	"github.com/golang/protobuf/protoc-gen-go/descriptor"
+	plugin "github.com/golang/protobuf/protoc-gen-go/plugin"
+)
+
+// generatedCodeVersion indicates a version of the generated code.
+// It is incremented whenever an incompatibility between the generated code and
+// proto package is introduced; the generated code references
+// a constant, proto.ProtoPackageIsVersionN (where N is generatedCodeVersion).
+const generatedCodeVersion = 2
+
+// A Plugin provides functionality to add to the output during Go code generation,
+// such as to produce RPC stubs.
+type Plugin interface {
+	// Name identifies the plugin.
+	Name() string
+	// Init is called once after data structures are built but before
+	// code generation begins.
+	Init(g *Generator)
+	// Generate produces the code generated by the plugin for this file,
+	// except for the imports, by calling the generator's methods P, In, and Out.
+	Generate(file *FileDescriptor)
+	// GenerateImports produces the import declarations for this file.
+	// It is called after Generate.
+	GenerateImports(file *FileDescriptor)
+}
+
+var plugins []Plugin
+
+// RegisterPlugin installs a (second-order) plugin to be run when the Go output is generated.
+// It is typically called during initialization.
+func RegisterPlugin(p Plugin) {
+	plugins = append(plugins, p)
+}
+
+// Each type we import as a protocol buffer (other than FileDescriptorProto) needs
+// a pointer to the FileDescriptorProto that represents it.  These types achieve that
+// wrapping by placing each Proto inside a struct with the pointer to its File. The
+// structs have the same names as their contents, with "Proto" removed.
+// FileDescriptor is used to store the things that it points to.
+
+// The file and package name method are common to messages and enums.
+type common struct {
+	file *descriptor.FileDescriptorProto // File this object comes from.
+}
+
+// PackageName is name in the package clause in the generated file.
+func (c *common) PackageName() string { return uniquePackageOf(c.file) }
+
+func (c *common) File() *descriptor.FileDescriptorProto { return c.file }
+
+func fileIsProto3(file *descriptor.FileDescriptorProto) bool {
+	return file.GetSyntax() == "proto3"
+}
+
+func (c *common) proto3() bool { return fileIsProto3(c.file) }
+
+// Descriptor represents a protocol buffer message.
+type Descriptor struct {
+	common
+	*descriptor.DescriptorProto
+	parent   *Descriptor            // The containing message, if any.
+	nested   []*Descriptor          // Inner messages, if any.
+	enums    []*EnumDescriptor      // Inner enums, if any.
+	ext      []*ExtensionDescriptor // Extensions, if any.
+	typename []string               // Cached typename vector.
+	index    int                    // The index into the container, whether the file or another message.
+	path     string                 // The SourceCodeInfo path as comma-separated integers.
+	group    bool
+}
+
+// TypeName returns the elements of the dotted type name.
+// The package name is not part of this name.
+func (d *Descriptor) TypeName() []string {
+	if d.typename != nil {
+		return d.typename
+	}
+	n := 0
+	for parent := d; parent != nil; parent = parent.parent {
+		n++
+	}
+	s := make([]string, n, n)
+	for parent := d; parent != nil; parent = parent.parent {
+		n--
+		s[n] = parent.GetName()
+	}
+	d.typename = s
+	return s
+}
+
+// EnumDescriptor describes an enum. If it's at top level, its parent will be nil.
+// Otherwise it will be the descriptor of the message in which it is defined.
+type EnumDescriptor struct {
+	common
+	*descriptor.EnumDescriptorProto
+	parent   *Descriptor // The containing message, if any.
+	typename []string    // Cached typename vector.
+	index    int         // The index into the container, whether the file or a message.
+	path     string      // The SourceCodeInfo path as comma-separated integers.
+}
+
+// TypeName returns the elements of the dotted type name.
+// The package name is not part of this name.
+func (e *EnumDescriptor) TypeName() (s []string) {
+	if e.typename != nil {
+		return e.typename
+	}
+	name := e.GetName()
+	if e.parent == nil {
+		s = make([]string, 1)
+	} else {
+		pname := e.parent.TypeName()
+		s = make([]string, len(pname)+1)
+		copy(s, pname)
+	}
+	s[len(s)-1] = name
+	e.typename = s
+	return s
+}
+
+// Everything but the last element of the full type name, CamelCased.
+// The values of type Foo.Bar are call Foo_value1... not Foo_Bar_value1... .
+func (e *EnumDescriptor) prefix() string {
+	if e.parent == nil {
+		// If the enum is not part of a message, the prefix is just the type name.
+		return CamelCase(*e.Name) + "_"
+	}
+	typeName := e.TypeName()
+	return CamelCaseSlice(typeName[0:len(typeName)-1]) + "_"
+}
+
+// The integer value of the named constant in this enumerated type.
+func (e *EnumDescriptor) integerValueAsString(name string) string {
+	for _, c := range e.Value {
+		if c.GetName() == name {
+			return fmt.Sprint(c.GetNumber())
+		}
+	}
+	log.Fatal("cannot find value for enum constant")
+	return ""
+}
+
+// ExtensionDescriptor describes an extension. If it's at top level, its parent will be nil.
+// Otherwise it will be the descriptor of the message in which it is defined.
+type ExtensionDescriptor struct {
+	common
+	*descriptor.FieldDescriptorProto
+	parent *Descriptor // The containing message, if any.
+}
+
+// TypeName returns the elements of the dotted type name.
+// The package name is not part of this name.
+func (e *ExtensionDescriptor) TypeName() (s []string) {
+	name := e.GetName()
+	if e.parent == nil {
+		// top-level extension
+		s = make([]string, 1)
+	} else {
+		pname := e.parent.TypeName()
+		s = make([]string, len(pname)+1)
+		copy(s, pname)
+	}
+	s[len(s)-1] = name
+	return s
+}
+
+// DescName returns the variable name used for the generated descriptor.
+func (e *ExtensionDescriptor) DescName() string {
+	// The full type name.
+	typeName := e.TypeName()
+	// Each scope of the extension is individually CamelCased, and all are joined with "_" with an "E_" prefix.
+	for i, s := range typeName {
+		typeName[i] = CamelCase(s)
+	}
+	return "E_" + strings.Join(typeName, "_")
+}
+
+// ImportedDescriptor describes a type that has been publicly imported from another file.
+type ImportedDescriptor struct {
+	common
+	o Object
+}
+
+func (id *ImportedDescriptor) TypeName() []string { return id.o.TypeName() }
+
+// FileDescriptor describes an protocol buffer descriptor file (.proto).
+// It includes slices of all the messages and enums defined within it.
+// Those slices are constructed by WrapTypes.
+type FileDescriptor struct {
+	*descriptor.FileDescriptorProto
+	desc []*Descriptor          // All the messages defined in this file.
+	enum []*EnumDescriptor      // All the enums defined in this file.
+	ext  []*ExtensionDescriptor // All the top-level extensions defined in this file.
+	imp  []*ImportedDescriptor  // All types defined in files publicly imported by this file.
+
+	// Comments, stored as a map of path (comma-separated integers) to the comment.
+	comments map[string]*descriptor.SourceCodeInfo_Location
+
+	// The full list of symbols that are exported,
+	// as a map from the exported object to its symbols.
+	// This is used for supporting public imports.
+	exported map[Object][]symbol
+
+	index int // The index of this file in the list of files to generate code for
+
+	proto3 bool // whether to generate proto3 code for this file
+}
+
+// PackageName is the package name we'll use in the generated code to refer to this file.
+func (d *FileDescriptor) PackageName() string { return uniquePackageOf(d.FileDescriptorProto) }
+
+// VarName is the variable name we'll use in the generated code to refer
+// to the compressed bytes of this descriptor. It is not exported, so
+// it is only valid inside the generated package.
+func (d *FileDescriptor) VarName() string { return fmt.Sprintf("fileDescriptor%d", d.index) }
+
+// goPackageOption interprets the file's go_package option.
+// If there is no go_package, it returns ("", "", false).
+// If there's a simple name, it returns ("", pkg, true).
+// If the option implies an import path, it returns (impPath, pkg, true).
+func (d *FileDescriptor) goPackageOption() (impPath, pkg string, ok bool) {
+	pkg = d.GetOptions().GetGoPackage()
+	if pkg == "" {
+		return
+	}
+	ok = true
+	// The presence of a slash implies there's an import path.
+	slash := strings.LastIndex(pkg, "/")
+	if slash < 0 {
+		return
+	}
+	impPath, pkg = pkg, pkg[slash+1:]
+	// A semicolon-delimited suffix overrides the package name.
+	sc := strings.IndexByte(impPath, ';')
+	if sc < 0 {
+		return
+	}
+	impPath, pkg = impPath[:sc], impPath[sc+1:]
+	return
+}
+
+// goPackageName returns the Go package name to use in the
+// generated Go file.  The result explicit reports whether the name
+// came from an option go_package statement.  If explicit is false,
+// the name was derived from the protocol buffer's package statement
+// or the input file name.
+func (d *FileDescriptor) goPackageName() (name string, explicit bool) {
+	// Does the file have a "go_package" option?
+	if _, pkg, ok := d.goPackageOption(); ok {
+		return pkg, true
+	}
+
+	// Does the file have a package clause?
+	if pkg := d.GetPackage(); pkg != "" {
+		return pkg, false
+	}
+	// Use the file base name.
+	return baseName(d.GetName()), false
+}
+
+// goFileName returns the output name for the generated Go file.
+func (d *FileDescriptor) goFileName() string {
+	name := *d.Name
+	if ext := path.Ext(name); ext == ".proto" || ext == ".protodevel" {
+		name = name[:len(name)-len(ext)]
+	}
+	name += ".pb.go"
+
+	// Does the file have a "go_package" option?
+	// If it does, it may override the filename.
+	if impPath, _, ok := d.goPackageOption(); ok && impPath != "" {
+		// Replace the existing dirname with the declared import path.
+		_, name = path.Split(name)
+		name = path.Join(impPath, name)
+		return name
+	}
+
+	return name
+}
+
+func (d *FileDescriptor) addExport(obj Object, sym symbol) {
+	d.exported[obj] = append(d.exported[obj], sym)
+}
+
+// symbol is an interface representing an exported Go symbol.
+type symbol interface {
+	// GenerateAlias should generate an appropriate alias
+	// for the symbol from the named package.
+	GenerateAlias(g *Generator, pkg string)
+}
+
+type messageSymbol struct {
+	sym                         string
+	hasExtensions, isMessageSet bool
+	hasOneof                    bool
+	getters                     []getterSymbol
+}
+
+type getterSymbol struct {
+	name     string
+	typ      string
+	typeName string // canonical name in proto world; empty for proto.Message and similar
+	genType  bool   // whether typ contains a generated type (message/group/enum)
+}
+
+func (ms *messageSymbol) GenerateAlias(g *Generator, pkg string) {
+	remoteSym := pkg + "." + ms.sym
+
+	g.P("type ", ms.sym, " ", remoteSym)
+	g.P("func (m *", ms.sym, ") Reset() { (*", remoteSym, ")(m).Reset() }")
+	g.P("func (m *", ms.sym, ") String() string { return (*", remoteSym, ")(m).String() }")
+	g.P("func (*", ms.sym, ") ProtoMessage() {}")
+	if ms.hasExtensions {
+		g.P("func (*", ms.sym, ") ExtensionRangeArray() []", g.Pkg["proto"], ".ExtensionRange ",
+			"{ return (*", remoteSym, ")(nil).ExtensionRangeArray() }")
+		if ms.isMessageSet {
+			g.P("func (m *", ms.sym, ") Marshal() ([]byte, error) ",
+				"{ return (*", remoteSym, ")(m).Marshal() }")
+			g.P("func (m *", ms.sym, ") Unmarshal(buf []byte) error ",
+				"{ return (*", remoteSym, ")(m).Unmarshal(buf) }")
+		}
+	}
+	if ms.hasOneof {
+		// Oneofs and public imports do not mix well.
+		// We can make them work okay for the binary format,
+		// but they're going to break weirdly for text/JSON.
+		enc := "_" + ms.sym + "_OneofMarshaler"
+		dec := "_" + ms.sym + "_OneofUnmarshaler"
+		size := "_" + ms.sym + "_OneofSizer"
+		encSig := "(msg " + g.Pkg["proto"] + ".Message, b *" + g.Pkg["proto"] + ".Buffer) error"
+		decSig := "(msg " + g.Pkg["proto"] + ".Message, tag, wire int, b *" + g.Pkg["proto"] + ".Buffer) (bool, error)"
+		sizeSig := "(msg " + g.Pkg["proto"] + ".Message) int"
+		g.P("func (m *", ms.sym, ") XXX_OneofFuncs() (func", encSig, ", func", decSig, ", func", sizeSig, ", []interface{}) {")
+		g.P("return ", enc, ", ", dec, ", ", size, ", nil")
+		g.P("}")
+
+		g.P("func ", enc, encSig, " {")
+		g.P("m := msg.(*", ms.sym, ")")
+		g.P("m0 := (*", remoteSym, ")(m)")
+		g.P("enc, _, _, _ := m0.XXX_OneofFuncs()")
+		g.P("return enc(m0, b)")
+		g.P("}")
+
+		g.P("func ", dec, decSig, " {")
+		g.P("m := msg.(*", ms.sym, ")")
+		g.P("m0 := (*", remoteSym, ")(m)")
+		g.P("_, dec, _, _ := m0.XXX_OneofFuncs()")
+		g.P("return dec(m0, tag, wire, b)")
+		g.P("}")
+
+		g.P("func ", size, sizeSig, " {")
+		g.P("m := msg.(*", ms.sym, ")")
+		g.P("m0 := (*", remoteSym, ")(m)")
+		g.P("_, _, size, _ := m0.XXX_OneofFuncs()")
+		g.P("return size(m0)")
+		g.P("}")
+	}
+	for _, get := range ms.getters {
+
+		if get.typeName != "" {
+			g.RecordTypeUse(get.typeName)
+		}
+		typ := get.typ
+		val := "(*" + remoteSym + ")(m)." + get.name + "()"
+		if get.genType {
+			// typ will be "*pkg.T" (message/group) or "pkg.T" (enum)
+			// or "map[t]*pkg.T" (map to message/enum).
+			// The first two of those might have a "[]" prefix if it is repeated.
+			// Drop any package qualifier since we have hoisted the type into this package.
+			rep := strings.HasPrefix(typ, "[]")
+			if rep {
+				typ = typ[2:]
+			}
+			isMap := strings.HasPrefix(typ, "map[")
+			star := typ[0] == '*'
+			if !isMap { // map types handled lower down
+				typ = typ[strings.Index(typ, ".")+1:]
+			}
+			if star {
+				typ = "*" + typ
+			}
+			if rep {
+				// Go does not permit conversion between slice types where both
+				// element types are named. That means we need to generate a bit
+				// of code in this situation.
+				// typ is the element type.
+				// val is the expression to get the slice from the imported type.
+
+				ctyp := typ // conversion type expression; "Foo" or "(*Foo)"
+				if star {
+					ctyp = "(" + typ + ")"
+				}
+
+				g.P("func (m *", ms.sym, ") ", get.name, "() []", typ, " {")
+				g.In()
+				g.P("o := ", val)
+				g.P("if o == nil {")
+				g.In()
+				g.P("return nil")
+				g.Out()
+				g.P("}")
+				g.P("s := make([]", typ, ", len(o))")
+				g.P("for i, x := range o {")
+				g.In()
+				g.P("s[i] = ", ctyp, "(x)")
+				g.Out()
+				g.P("}")
+				g.P("return s")
+				g.Out()
+				g.P("}")
+				continue
+			}
+			if isMap {
+				// Split map[keyTyp]valTyp.
+				bra, ket := strings.Index(typ, "["), strings.Index(typ, "]")
+				keyTyp, valTyp := typ[bra+1:ket], typ[ket+1:]
+				// Drop any package qualifier.
+				// Only the value type may be foreign.
+				star := valTyp[0] == '*'
+				valTyp = valTyp[strings.Index(valTyp, ".")+1:]
+				if star {
+					valTyp = "*" + valTyp
+				}
+
+				typ := "map[" + keyTyp + "]" + valTyp
+				g.P("func (m *", ms.sym, ") ", get.name, "() ", typ, " {")
+				g.P("o := ", val)
+				g.P("if o == nil { return nil }")
+				g.P("s := make(", typ, ", len(o))")
+				g.P("for k, v := range o {")
+				g.P("s[k] = (", valTyp, ")(v)")
+				g.P("}")
+				g.P("return s")
+				g.P("}")
+				continue
+			}
+			// Convert imported type into the forwarding type.
+			val = "(" + typ + ")(" + val + ")"
+		}
+
+		g.P("func (m *", ms.sym, ") ", get.name, "() ", typ, " { return ", val, " }")
+	}
+
+}
+
+type enumSymbol struct {
+	name   string
+	proto3 bool // Whether this came from a proto3 file.
+}
+
+func (es enumSymbol) GenerateAlias(g *Generator, pkg string) {
+	s := es.name
+	g.P("type ", s, " ", pkg, ".", s)
+	g.P("var ", s, "_name = ", pkg, ".", s, "_name")
+	g.P("var ", s, "_value = ", pkg, ".", s, "_value")
+	g.P("func (x ", s, ") String() string { return (", pkg, ".", s, ")(x).String() }")
+	if !es.proto3 {
+		g.P("func (x ", s, ") Enum() *", s, "{ return (*", s, ")((", pkg, ".", s, ")(x).Enum()) }")
+		g.P("func (x *", s, ") UnmarshalJSON(data []byte) error { return (*", pkg, ".", s, ")(x).UnmarshalJSON(data) }")
+	}
+}
+
+type constOrVarSymbol struct {
+	sym  string
+	typ  string // either "const" or "var"
+	cast string // if non-empty, a type cast is required (used for enums)
+}
+
+func (cs constOrVarSymbol) GenerateAlias(g *Generator, pkg string) {
+	v := pkg + "." + cs.sym
+	if cs.cast != "" {
+		v = cs.cast + "(" + v + ")"
+	}
+	g.P(cs.typ, " ", cs.sym, " = ", v)
+}
+
+// Object is an interface abstracting the abilities shared by enums, messages, extensions and imported objects.
+type Object interface {
+	PackageName() string // The name we use in our output (a_b_c), possibly renamed for uniqueness.
+	TypeName() []string
+	File() *descriptor.FileDescriptorProto
+}
+
+// Each package name we generate must be unique. The package we're generating
+// gets its own name but every other package must have a unique name that does
+// not conflict in the code we generate.  These names are chosen globally (although
+// they don't have to be, it simplifies things to do them globally).
+func uniquePackageOf(fd *descriptor.FileDescriptorProto) string {
+	s, ok := uniquePackageName[fd]
+	if !ok {
+		log.Fatal("internal error: no package name defined for " + fd.GetName())
+	}
+	return s
+}
+
+// Generator is the type whose methods generate the output, stored in the associated response structure.
+type Generator struct {
+	*bytes.Buffer
+
+	Request  *plugin.CodeGeneratorRequest  // The input.
+	Response *plugin.CodeGeneratorResponse // The output.
+
+	Param             map[string]string // Command-line parameters.
+	PackageImportPath string            // Go import path of the package we're generating code for
+	ImportPrefix      string            // String to prefix to imported package file names.
+	ImportMap         map[string]string // Mapping from .proto file name to import path
+
+	Pkg map[string]string // The names under which we import support packages
+
+	packageName      string                     // What we're calling ourselves.
+	allFiles         []*FileDescriptor          // All files in the tree
+	allFilesByName   map[string]*FileDescriptor // All files by filename.
+	genFiles         []*FileDescriptor          // Those files we will generate output for.
+	file             *FileDescriptor            // The file we are compiling now.
+	usedPackages     map[string]bool            // Names of packages used in current file.
+	typeNameToObject map[string]Object          // Key is a fully-qualified name in input syntax.
+	init             []string                   // Lines to emit in the init function.
+	indent           string
+	writeOutput      bool
+}
+
+// New creates a new generator and allocates the request and response protobufs.
+func New() *Generator {
+	g := new(Generator)
+	g.Buffer = new(bytes.Buffer)
+	g.Request = new(plugin.CodeGeneratorRequest)
+	g.Response = new(plugin.CodeGeneratorResponse)
+	return g
+}
+
+// Error reports a problem, including an error, and exits the program.
+func (g *Generator) Error(err error, msgs ...string) {
+	s := strings.Join(msgs, " ") + ":" + err.Error()
+	log.Print("protoc-gen-go: error:", s)
+	os.Exit(1)
+}
+
+// Fail reports a problem and exits the program.
+func (g *Generator) Fail(msgs ...string) {
+	s := strings.Join(msgs, " ")
+	log.Print("protoc-gen-go: error:", s)
+	os.Exit(1)
+}
+
+// CommandLineParameters breaks the comma-separated list of key=value pairs
+// in the parameter (a member of the request protobuf) into a key/value map.
+// It then sets file name mappings defined by those entries.
+func (g *Generator) CommandLineParameters(parameter string) {
+	g.Param = make(map[string]string)
+	for _, p := range strings.Split(parameter, ",") {
+		if i := strings.Index(p, "="); i < 0 {
+			g.Param[p] = ""
+		} else {
+			g.Param[p[0:i]] = p[i+1:]
+		}
+	}
+
+	g.ImportMap = make(map[string]string)
+	pluginList := "none" // Default list of plugin names to enable (empty means all).
+	for k, v := range g.Param {
+		switch k {
+		case "import_prefix":
+			g.ImportPrefix = v
+		case "import_path":
+			g.PackageImportPath = v
+		case "plugins":
+			pluginList = v
+		default:
+			if len(k) > 0 && k[0] == 'M' {
+				g.ImportMap[k[1:]] = v
+			}
+		}
+	}
+	if pluginList != "" {
+		// Amend the set of plugins.
+		enabled := make(map[string]bool)
+		for _, name := range strings.Split(pluginList, "+") {
+			enabled[name] = true
+		}
+		var nplugins []Plugin
+		for _, p := range plugins {
+			if enabled[p.Name()] {
+				nplugins = append(nplugins, p)
+			}
+		}
+		plugins = nplugins
+	}
+}
+
+// DefaultPackageName returns the package name printed for the object.
+// If its file is in a different package, it returns the package name we're using for this file, plus ".".
+// Otherwise it returns the empty string.
+func (g *Generator) DefaultPackageName(obj Object) string {
+	pkg := obj.PackageName()
+	if pkg == g.packageName {
+		return ""
+	}
+	return pkg + "."
+}
+
+// For each input file, the unique package name to use, underscored.
+var uniquePackageName = make(map[*descriptor.FileDescriptorProto]string)
+
+// Package names already registered.  Key is the name from the .proto file;
+// value is the name that appears in the generated code.
+var pkgNamesInUse = make(map[string]bool)
+
+// Create and remember a guaranteed unique package name for this file descriptor.
+// Pkg is the candidate name.  If f is nil, it's a builtin package like "proto" and
+// has no file descriptor.
+func RegisterUniquePackageName(pkg string, f *FileDescriptor) string {
+	// Convert dots to underscores before finding a unique alias.
+	pkg = strings.Map(badToUnderscore, pkg)
+
+	for i, orig := 1, pkg; pkgNamesInUse[pkg]; i++ {
+		// It's a duplicate; must rename.
+		pkg = orig + strconv.Itoa(i)
+	}
+	// Install it.
+	pkgNamesInUse[pkg] = true
+	if f != nil {
+		uniquePackageName[f.FileDescriptorProto] = pkg
+	}
+	return pkg
+}
+
+var isGoKeyword = map[string]bool{
+	"break":       true,
+	"case":        true,
+	"chan":        true,
+	"const":       true,
+	"continue":    true,
+	"default":     true,
+	"else":        true,
+	"defer":       true,
+	"fallthrough": true,
+	"for":         true,
+	"func":        true,
+	"go":          true,
+	"goto":        true,
+	"if":          true,
+	"import":      true,
+	"interface":   true,
+	"map":         true,
+	"package":     true,
+	"range":       true,
+	"return":      true,
+	"select":      true,
+	"struct":      true,
+	"switch":      true,
+	"type":        true,
+	"var":         true,
+}
+
+// defaultGoPackage returns the package name to use,
+// derived from the import path of the package we're building code for.
+func (g *Generator) defaultGoPackage() string {
+	p := g.PackageImportPath
+	if i := strings.LastIndex(p, "/"); i >= 0 {
+		p = p[i+1:]
+	}
+	if p == "" {
+		return ""
+	}
+
+	p = strings.Map(badToUnderscore, p)
+	// Identifier must not be keyword: insert _.
+	if isGoKeyword[p] {
+		p = "_" + p
+	}
+	// Identifier must not begin with digit: insert _.
+	if r, _ := utf8.DecodeRuneInString(p); unicode.IsDigit(r) {
+		p = "_" + p
+	}
+	return p
+}
+
+// SetPackageNames sets the package name for this run.
+// The package name must agree across all files being generated.
+// It also defines unique package names for all imported files.
+func (g *Generator) SetPackageNames() {
+	// Register the name for this package.  It will be the first name
+	// registered so is guaranteed to be unmodified.
+	pkg, explicit := g.genFiles[0].goPackageName()
+
+	// Check all files for an explicit go_package option.
+	for _, f := range g.genFiles {
+		thisPkg, thisExplicit := f.goPackageName()
+		if thisExplicit {
+			if !explicit {
+				// Let this file's go_package option serve for all input files.
+				pkg, explicit = thisPkg, true
+			} else if thisPkg != pkg {
+				g.Fail("inconsistent package names:", thisPkg, pkg)
+			}
+		}
+	}
+
+	// If we don't have an explicit go_package option but we have an
+	// import path, use that.
+	if !explicit {
+		p := g.defaultGoPackage()
+		if p != "" {
+			pkg, explicit = p, true
+		}
+	}
+
+	// If there was no go_package and no import path to use,
+	// double-check that all the inputs have the same implicit
+	// Go package name.
+	if !explicit {
+		for _, f := range g.genFiles {
+			thisPkg, _ := f.goPackageName()
+			if thisPkg != pkg {
+				g.Fail("inconsistent package names:", thisPkg, pkg)
+			}
+		}
+	}
+
+	g.packageName = RegisterUniquePackageName(pkg, g.genFiles[0])
+
+	// Register the support package names. They might collide with the
+	// name of a package we import.
+	g.Pkg = map[string]string{
+		"fmt":   RegisterUniquePackageName("fmt", nil),
+		"math":  RegisterUniquePackageName("math", nil),
+		"proto": RegisterUniquePackageName("proto", nil),
+	}
+
+AllFiles:
+	for _, f := range g.allFiles {
+		for _, genf := range g.genFiles {
+			if f == genf {
+				// In this package already.
+				uniquePackageName[f.FileDescriptorProto] = g.packageName
+				continue AllFiles
+			}
+		}
+		// The file is a dependency, so we want to ignore its go_package option
+		// because that is only relevant for its specific generated output.
+		pkg := f.GetPackage()
+		if pkg == "" {
+			pkg = baseName(*f.Name)
+		}
+		RegisterUniquePackageName(pkg, f)
+	}
+}
+
+// WrapTypes walks the incoming data, wrapping DescriptorProtos, EnumDescriptorProtos
+// and FileDescriptorProtos into file-referenced objects within the Generator.
+// It also creates the list of files to generate and so should be called before GenerateAllFiles.
+func (g *Generator) WrapTypes() {
+	g.allFiles = make([]*FileDescriptor, 0, len(g.Request.ProtoFile))
+	g.allFilesByName = make(map[string]*FileDescriptor, len(g.allFiles))
+	for _, f := range g.Request.ProtoFile {
+		// We must wrap the descriptors before we wrap the enums
+		descs := wrapDescriptors(f)
+		g.buildNestedDescriptors(descs)
+		enums := wrapEnumDescriptors(f, descs)
+		g.buildNestedEnums(descs, enums)
+		exts := wrapExtensions(f)
+		fd := &FileDescriptor{
+			FileDescriptorProto: f,
+			desc:                descs,
+			enum:                enums,
+			ext:                 exts,
+			exported:            make(map[Object][]symbol),
+			proto3:              fileIsProto3(f),
+		}
+		extractComments(fd)
+		g.allFiles = append(g.allFiles, fd)
+		g.allFilesByName[f.GetName()] = fd
+	}
+	for _, fd := range g.allFiles {
+		fd.imp = wrapImported(fd.FileDescriptorProto, g)
+	}
+
+	g.genFiles = make([]*FileDescriptor, 0, len(g.Request.FileToGenerate))
+	for _, fileName := range g.Request.FileToGenerate {
+		fd := g.allFilesByName[fileName]
+		if fd == nil {
+			g.Fail("could not find file named", fileName)
+		}
+		fd.index = len(g.genFiles)
+		g.genFiles = append(g.genFiles, fd)
+	}
+}
+
+// Scan the descriptors in this file.  For each one, build the slice of nested descriptors
+func (g *Generator) buildNestedDescriptors(descs []*Descriptor) {
+	for _, desc := range descs {
+		if len(desc.NestedType) != 0 {
+			for _, nest := range descs {
+				if nest.parent == desc {
+					desc.nested = append(desc.nested, nest)
+				}
+			}
+			if len(desc.nested) != len(desc.NestedType) {
+				g.Fail("internal error: nesting failure for", desc.GetName())
+			}
+		}
+	}
+}
+
+func (g *Generator) buildNestedEnums(descs []*Descriptor, enums []*EnumDescriptor) {
+	for _, desc := range descs {
+		if len(desc.EnumType) != 0 {
+			for _, enum := range enums {
+				if enum.parent == desc {
+					desc.enums = append(desc.enums, enum)
+				}
+			}
+			if len(desc.enums) != len(desc.EnumType) {
+				g.Fail("internal error: enum nesting failure for", desc.GetName())
+			}
+		}
+	}
+}
+
+// Construct the Descriptor
+func newDescriptor(desc *descriptor.DescriptorProto, parent *Descriptor, file *descriptor.FileDescriptorProto, index int) *Descriptor {
+	d := &Descriptor{
+		common:          common{file},
+		DescriptorProto: desc,
+		parent:          parent,
+		index:           index,
+	}
+	if parent == nil {
+		d.path = fmt.Sprintf("%d,%d", messagePath, index)
+	} else {
+		d.path = fmt.Sprintf("%s,%d,%d", parent.path, messageMessagePath, index)
+	}
+
+	// The only way to distinguish a group from a message is whether
+	// the containing message has a TYPE_GROUP field that matches.
+	if parent != nil {
+		parts := d.TypeName()
+		if file.Package != nil {
+			parts = append([]string{*file.Package}, parts...)
+		}
+		exp := "." + strings.Join(parts, ".")
+		for _, field := range parent.Field {
+			if field.GetType() == descriptor.FieldDescriptorProto_TYPE_GROUP && field.GetTypeName() == exp {
+				d.group = true
+				break
+			}
+		}
+	}
+
+	for _, field := range desc.Extension {
+		d.ext = append(d.ext, &ExtensionDescriptor{common{file}, field, d})
+	}
+
+	return d
+}
+
+// Return a slice of all the Descriptors defined within this file
+func wrapDescriptors(file *descriptor.FileDescriptorProto) []*Descriptor {
+	sl := make([]*Descriptor, 0, len(file.MessageType)+10)
+	for i, desc := range file.MessageType {
+		sl = wrapThisDescriptor(sl, desc, nil, file, i)
+	}
+	return sl
+}
+
+// Wrap this Descriptor, recursively
+func wrapThisDescriptor(sl []*Descriptor, desc *descriptor.DescriptorProto, parent *Descriptor, file *descriptor.FileDescriptorProto, index int) []*Descriptor {
+	sl = append(sl, newDescriptor(desc, parent, file, index))
+	me := sl[len(sl)-1]
+	for i, nested := range desc.NestedType {
+		sl = wrapThisDescriptor(sl, nested, me, file, i)
+	}
+	return sl
+}
+
+// Construct the EnumDescriptor
+func newEnumDescriptor(desc *descriptor.EnumDescriptorProto, parent *Descriptor, file *descriptor.FileDescriptorProto, index int) *EnumDescriptor {
+	ed := &EnumDescriptor{
+		common:              common{file},
+		EnumDescriptorProto: desc,
+		parent:              parent,
+		index:               index,
+	}
+	if parent == nil {
+		ed.path = fmt.Sprintf("%d,%d", enumPath, index)
+	} else {
+		ed.path = fmt.Sprintf("%s,%d,%d", parent.path, messageEnumPath, index)
+	}
+	return ed
+}
+
+// Return a slice of all the EnumDescriptors defined within this file
+func wrapEnumDescriptors(file *descriptor.FileDescriptorProto, descs []*Descriptor) []*EnumDescriptor {
+	sl := make([]*EnumDescriptor, 0, len(file.EnumType)+10)
+	// Top-level enums.
+	for i, enum := range file.EnumType {
+		sl = append(sl, newEnumDescriptor(enum, nil, file, i))
+	}
+	// Enums within messages. Enums within embedded messages appear in the outer-most message.
+	for _, nested := range descs {
+		for i, enum := range nested.EnumType {
+			sl = append(sl, newEnumDescriptor(enum, nested, file, i))
+		}
+	}
+	return sl
+}
+
+// Return a slice of all the top-level ExtensionDescriptors defined within this file.
+func wrapExtensions(file *descriptor.FileDescriptorProto) []*ExtensionDescriptor {
+	var sl []*ExtensionDescriptor
+	for _, field := range file.Extension {
+		sl = append(sl, &ExtensionDescriptor{common{file}, field, nil})
+	}
+	return sl
+}
+
+// Return a slice of all the types that are publicly imported into this file.
+func wrapImported(file *descriptor.FileDescriptorProto, g *Generator) (sl []*ImportedDescriptor) {
+	for _, index := range file.PublicDependency {
+		df := g.fileByName(file.Dependency[index])
+		for _, d := range df.desc {
+			if d.GetOptions().GetMapEntry() {
+				continue
+			}
+			sl = append(sl, &ImportedDescriptor{common{file}, d})
+		}
+		for _, e := range df.enum {
+			sl = append(sl, &ImportedDescriptor{common{file}, e})
+		}
+		for _, ext := range df.ext {
+			sl = append(sl, &ImportedDescriptor{common{file}, ext})
+		}
+	}
+	return
+}
+
+func extractComments(file *FileDescriptor) {
+	file.comments = make(map[string]*descriptor.SourceCodeInfo_Location)
+	for _, loc := range file.GetSourceCodeInfo().GetLocation() {
+		if loc.LeadingComments == nil {
+			continue
+		}
+		var p []string
+		for _, n := range loc.Path {
+			p = append(p, strconv.Itoa(int(n)))
+		}
+		file.comments[strings.Join(p, ",")] = loc
+	}
+}
+
+// BuildTypeNameMap builds the map from fully qualified type names to objects.
+// The key names for the map come from the input data, which puts a period at the beginning.
+// It should be called after SetPackageNames and before GenerateAllFiles.
+func (g *Generator) BuildTypeNameMap() {
+	g.typeNameToObject = make(map[string]Object)
+	for _, f := range g.allFiles {
+		// The names in this loop are defined by the proto world, not us, so the
+		// package name may be empty.  If so, the dotted package name of X will
+		// be ".X"; otherwise it will be ".pkg.X".
+		dottedPkg := "." + f.GetPackage()
+		if dottedPkg != "." {
+			dottedPkg += "."
+		}
+		for _, enum := range f.enum {
+			name := dottedPkg + dottedSlice(enum.TypeName())
+			g.typeNameToObject[name] = enum
+		}
+		for _, desc := range f.desc {
+			name := dottedPkg + dottedSlice(desc.TypeName())
+			g.typeNameToObject[name] = desc
+		}
+	}
+}
+
+// ObjectNamed, given a fully-qualified input type name as it appears in the input data,
+// returns the descriptor for the message or enum with that name.
+func (g *Generator) ObjectNamed(typeName string) Object {
+	o, ok := g.typeNameToObject[typeName]
+	if !ok {
+		g.Fail("can't find object with type", typeName)
+	}
+
+	// If the file of this object isn't a direct dependency of the current file,
+	// or in the current file, then this object has been publicly imported into
+	// a dependency of the current file.
+	// We should return the ImportedDescriptor object for it instead.
+	direct := *o.File().Name == *g.file.Name
+	if !direct {
+		for _, dep := range g.file.Dependency {
+			if *g.fileByName(dep).Name == *o.File().Name {
+				direct = true
+				break
+			}
+		}
+	}
+	if !direct {
+		found := false
+	Loop:
+		for _, dep := range g.file.Dependency {
+			df := g.fileByName(*g.fileByName(dep).Name)
+			for _, td := range df.imp {
+				if td.o == o {
+					// Found it!
+					o = td
+					found = true
+					break Loop
+				}
+			}
+		}
+		if !found {
+			log.Printf("protoc-gen-go: WARNING: failed finding publicly imported dependency for %v, used in %v", typeName, *g.file.Name)
+		}
+	}
+
+	return o
+}
+
+// P prints the arguments to the generated output.  It handles strings and int32s, plus
+// handling indirections because they may be *string, etc.
+func (g *Generator) P(str ...interface{}) {
+	if !g.writeOutput {
+		return
+	}
+	g.WriteString(g.indent)
+	for _, v := range str {
+		switch s := v.(type) {
+		case string:
+			g.WriteString(s)
+		case *string:
+			g.WriteString(*s)
+		case bool:
+			fmt.Fprintf(g, "%t", s)
+		case *bool:
+			fmt.Fprintf(g, "%t", *s)
+		case int:
+			fmt.Fprintf(g, "%d", s)
+		case *int32:
+			fmt.Fprintf(g, "%d", *s)
+		case *int64:
+			fmt.Fprintf(g, "%d", *s)
+		case float64:
+			fmt.Fprintf(g, "%g", s)
+		case *float64:
+			fmt.Fprintf(g, "%g", *s)
+		default:
+			g.Fail(fmt.Sprintf("unknown type in printer: %T", v))
+		}
+	}
+	g.WriteByte('\n')
+}
+
+// addInitf stores the given statement to be printed inside the file's init function.
+// The statement is given as a format specifier and arguments.
+func (g *Generator) addInitf(stmt string, a ...interface{}) {
+	g.init = append(g.init, fmt.Sprintf(stmt, a...))
+}
+
+// In Indents the output one tab stop.
+func (g *Generator) In() { g.indent += "\t" }
+
+// Out unindents the output one tab stop.
+func (g *Generator) Out() {
+	if len(g.indent) > 0 {
+		g.indent = g.indent[1:]
+	}
+}
+
+// GenerateAllFiles generates the output for all the files we're outputting.
+func (g *Generator) GenerateAllFiles() {
+	// Initialize the plugins
+	for _, p := range plugins {
+		p.Init(g)
+	}
+	// Generate the output. The generator runs for every file, even the files
+	// that we don't generate output for, so that we can collate the full list
+	// of exported symbols to support public imports.
+	genFileMap := make(map[*FileDescriptor]bool, len(g.genFiles))
+	for _, file := range g.genFiles {
+		genFileMap[file] = true
+	}
+	for _, file := range g.allFiles {
+		g.Reset()
+		g.writeOutput = genFileMap[file]
+		g.generate(file)
+		if !g.writeOutput {
+			continue
+		}
+		g.Response.File = append(g.Response.File, &plugin.CodeGeneratorResponse_File{
+			Name:    proto.String(file.goFileName()),
+			Content: proto.String(g.String()),
+		})
+	}
+}
+
+// Run all the plugins associated with the file.
+func (g *Generator) runPlugins(file *FileDescriptor) {
+	for _, p := range plugins {
+		p.Generate(file)
+	}
+}
+
+// FileOf return the FileDescriptor for this FileDescriptorProto.
+func (g *Generator) FileOf(fd *descriptor.FileDescriptorProto) *FileDescriptor {
+	for _, file := range g.allFiles {
+		if file.FileDescriptorProto == fd {
+			return file
+		}
+	}
+	g.Fail("could not find file in table:", fd.GetName())
+	return nil
+}
+
+// Fill the response protocol buffer with the generated output for all the files we're
+// supposed to generate.
+func (g *Generator) generate(file *FileDescriptor) {
+	g.file = g.FileOf(file.FileDescriptorProto)
+	g.usedPackages = make(map[string]bool)
+
+	if g.file.index == 0 {
+		// For one file in the package, assert version compatibility.
+		g.P("// This is a compile-time assertion to ensure that this generated file")
+		g.P("// is compatible with the proto package it is being compiled against.")
+		g.P("// A compilation error at this line likely means your copy of the")
+		g.P("// proto package needs to be updated.")
+		g.P("const _ = ", g.Pkg["proto"], ".ProtoPackageIsVersion", generatedCodeVersion, " // please upgrade the proto package")
+		g.P()
+	}
+	for _, td := range g.file.imp {
+		g.generateImported(td)
+	}
+	for _, enum := range g.file.enum {
+		g.generateEnum(enum)
+	}
+	for _, desc := range g.file.desc {
+		// Don't generate virtual messages for maps.
+		if desc.GetOptions().GetMapEntry() {
+			continue
+		}
+		g.generateMessage(desc)
+	}
+	for _, ext := range g.file.ext {
+		g.generateExtension(ext)
+	}
+	g.generateInitFunction()
+
+	// Run the plugins before the imports so we know which imports are necessary.
+	g.runPlugins(file)
+
+	g.generateFileDescriptor(file)
+
+	// Generate header and imports last, though they appear first in the output.
+	rem := g.Buffer
+	g.Buffer = new(bytes.Buffer)
+	g.generateHeader()
+	g.generateImports()
+	if !g.writeOutput {
+		return
+	}
+	g.Write(rem.Bytes())
+
+	// Reformat generated code.
+	fset := token.NewFileSet()
+	raw := g.Bytes()
+	ast, err := parser.ParseFile(fset, "", g, parser.ParseComments)
+	if err != nil {
+		// Print out the bad code with line numbers.
+		// This should never happen in practice, but it can while changing generated code,
+		// so consider this a debugging aid.
+		var src bytes.Buffer
+		s := bufio.NewScanner(bytes.NewReader(raw))
+		for line := 1; s.Scan(); line++ {
+			fmt.Fprintf(&src, "%5d\t%s\n", line, s.Bytes())
+		}
+		g.Fail("bad Go source code was generated:", err.Error(), "\n"+src.String())
+	}
+	g.Reset()
+	err = (&printer.Config{Mode: printer.TabIndent | printer.UseSpaces, Tabwidth: 8}).Fprint(g, fset, ast)
+	if err != nil {
+		g.Fail("generated Go source code could not be reformatted:", err.Error())
+	}
+}
+
+// Generate the header, including package definition
+func (g *Generator) generateHeader() {
+	g.P("// Code generated by protoc-gen-go. DO NOT EDIT.")
+	g.P("// source: ", g.file.Name)
+	g.P()
+
+	name := g.file.PackageName()
+
+	if g.file.index == 0 {
+		// Generate package docs for the first file in the package.
+		g.P("/*")
+		g.P("Package ", name, " is a generated protocol buffer package.")
+		g.P()
+		if loc, ok := g.file.comments[strconv.Itoa(packagePath)]; ok {
+			// not using g.PrintComments because this is a /* */ comment block.
+			text := strings.TrimSuffix(loc.GetLeadingComments(), "\n")
+			for _, line := range strings.Split(text, "\n") {
+				line = strings.TrimPrefix(line, " ")
+				// ensure we don't escape from the block comment
+				line = strings.Replace(line, "*/", "* /", -1)
+				g.P(line)
+			}
+			g.P()
+		}
+		var topMsgs []string
+		g.P("It is generated from these files:")
+		for _, f := range g.genFiles {
+			g.P("\t", f.Name)
+			for _, msg := range f.desc {
+				if msg.parent != nil {
+					continue
+				}
+				topMsgs = append(topMsgs, CamelCaseSlice(msg.TypeName()))
+			}
+		}
+		g.P()
+		g.P("It has these top-level messages:")
+		for _, msg := range topMsgs {
+			g.P("\t", msg)
+		}
+		g.P("*/")
+	}
+
+	g.P("package ", name)
+	g.P()
+}
+
+// PrintComments prints any comments from the source .proto file.
+// The path is a comma-separated list of integers.
+// It returns an indication of whether any comments were printed.
+// See descriptor.proto for its format.
+func (g *Generator) PrintComments(path string) bool {
+	if !g.writeOutput {
+		return false
+	}
+	if loc, ok := g.file.comments[path]; ok {
+		text := strings.TrimSuffix(loc.GetLeadingComments(), "\n")
+		for _, line := range strings.Split(text, "\n") {
+			g.P("// ", strings.TrimPrefix(line, " "))
+		}
+		return true
+	}
+	return false
+}
+
+func (g *Generator) fileByName(filename string) *FileDescriptor {
+	return g.allFilesByName[filename]
+}
+
+// weak returns whether the ith import of the current file is a weak import.
+func (g *Generator) weak(i int32) bool {
+	for _, j := range g.file.WeakDependency {
+		if j == i {
+			return true
+		}
+	}
+	return false
+}
+
+// Generate the imports
+func (g *Generator) generateImports() {
+	// We almost always need a proto import.  Rather than computing when we
+	// do, which is tricky when there's a plugin, just import it and
+	// reference it later. The same argument applies to the fmt and math packages.
+	g.P("import " + g.Pkg["proto"] + " " + strconv.Quote(g.ImportPrefix+"github.com/golang/protobuf/proto"))
+	g.P("import " + g.Pkg["fmt"] + ` "fmt"`)
+	g.P("import " + g.Pkg["math"] + ` "math"`)
+	for i, s := range g.file.Dependency {
+		fd := g.fileByName(s)
+		// Do not import our own package.
+		if fd.PackageName() == g.packageName {
+			continue
+		}
+		filename := fd.goFileName()
+		// By default, import path is the dirname of the Go filename.
+		importPath := path.Dir(filename)
+		if substitution, ok := g.ImportMap[s]; ok {
+			importPath = substitution
+		}
+		importPath = g.ImportPrefix + importPath
+		// Skip weak imports.
+		if g.weak(int32(i)) {
+			g.P("// skipping weak import ", fd.PackageName(), " ", strconv.Quote(importPath))
+			continue
+		}
+		// We need to import all the dependencies, even if we don't reference them,
+		// because other code and tools depend on having the full transitive closure
+		// of protocol buffer types in the binary.
+		pname := fd.PackageName()
+		if _, ok := g.usedPackages[pname]; !ok {
+			pname = "_"
+		}
+		g.P("import ", pname, " ", strconv.Quote(importPath))
+	}
+	g.P()
+	// TODO: may need to worry about uniqueness across plugins
+	for _, p := range plugins {
+		p.GenerateImports(g.file)
+		g.P()
+	}
+	g.P("// Reference imports to suppress errors if they are not otherwise used.")
+	g.P("var _ = ", g.Pkg["proto"], ".Marshal")
+	g.P("var _ = ", g.Pkg["fmt"], ".Errorf")
+	g.P("var _ = ", g.Pkg["math"], ".Inf")
+	g.P()
+}
+
+func (g *Generator) generateImported(id *ImportedDescriptor) {
+	// Don't generate public import symbols for files that we are generating
+	// code for, since those symbols will already be in this package.
+	// We can't simply avoid creating the ImportedDescriptor objects,
+	// because g.genFiles isn't populated at that stage.
+	tn := id.TypeName()
+	sn := tn[len(tn)-1]
+	df := g.FileOf(id.o.File())
+	filename := *df.Name
+	for _, fd := range g.genFiles {
+		if *fd.Name == filename {
+			g.P("// Ignoring public import of ", sn, " from ", filename)
+			g.P()
+			return
+		}
+	}
+	g.P("// ", sn, " from public import ", filename)
+	g.usedPackages[df.PackageName()] = true
+
+	for _, sym := range df.exported[id.o] {
+		sym.GenerateAlias(g, df.PackageName())
+	}
+
+	g.P()
+}
+
+// Generate the enum definitions for this EnumDescriptor.
+func (g *Generator) generateEnum(enum *EnumDescriptor) {
+	// The full type name
+	typeName := enum.TypeName()
+	// The full type name, CamelCased.
+	ccTypeName := CamelCaseSlice(typeName)
+	ccPrefix := enum.prefix()
+
+	g.PrintComments(enum.path)
+	g.P("type ", ccTypeName, " int32")
+	g.file.addExport(enum, enumSymbol{ccTypeName, enum.proto3()})
+	g.P("const (")
+	g.In()
+	for i, e := range enum.Value {
+		g.PrintComments(fmt.Sprintf("%s,%d,%d", enum.path, enumValuePath, i))
+
+		name := ccPrefix + *e.Name
+		g.P(name, " ", ccTypeName, " = ", e.Number)
+		g.file.addExport(enum, constOrVarSymbol{name, "const", ccTypeName})
+	}
+	g.Out()
+	g.P(")")
+	g.P("var ", ccTypeName, "_name = map[int32]string{")
+	g.In()
+	generated := make(map[int32]bool) // avoid duplicate values
+	for _, e := range enum.Value {
+		duplicate := ""
+		if _, present := generated[*e.Number]; present {
+			duplicate = "// Duplicate value: "
+		}
+		g.P(duplicate, e.Number, ": ", strconv.Quote(*e.Name), ",")
+		generated[*e.Number] = true
+	}
+	g.Out()
+	g.P("}")
+	g.P("var ", ccTypeName, "_value = map[string]int32{")
+	g.In()
+	for _, e := range enum.Value {
+		g.P(strconv.Quote(*e.Name), ": ", e.Number, ",")
+	}
+	g.Out()
+	g.P("}")
+
+	if !enum.proto3() {
+		g.P("func (x ", ccTypeName, ") Enum() *", ccTypeName, " {")
+		g.In()
+		g.P("p := new(", ccTypeName, ")")
+		g.P("*p = x")
+		g.P("return p")
+		g.Out()
+		g.P("}")
+	}
+
+	g.P("func (x ", ccTypeName, ") String() string {")
+	g.In()
+	g.P("return ", g.Pkg["proto"], ".EnumName(", ccTypeName, "_name, int32(x))")
+	g.Out()
+	g.P("}")
+
+	if !enum.proto3() {
+		g.P("func (x *", ccTypeName, ") UnmarshalJSON(data []byte) error {")
+		g.In()
+		g.P("value, err := ", g.Pkg["proto"], ".UnmarshalJSONEnum(", ccTypeName, `_value, data, "`, ccTypeName, `")`)
+		g.P("if err != nil {")
+		g.In()
+		g.P("return err")
+		g.Out()
+		g.P("}")
+		g.P("*x = ", ccTypeName, "(value)")
+		g.P("return nil")
+		g.Out()
+		g.P("}")
+	}
+
+	var indexes []string
+	for m := enum.parent; m != nil; m = m.parent {
+		// XXX: skip groups?
+		indexes = append([]string{strconv.Itoa(m.index)}, indexes...)
+	}
+	indexes = append(indexes, strconv.Itoa(enum.index))
+	g.P("func (", ccTypeName, ") EnumDescriptor() ([]byte, []int) { return ", g.file.VarName(), ", []int{", strings.Join(indexes, ", "), "} }")
+	if enum.file.GetPackage() == "google.protobuf" && enum.GetName() == "NullValue" {
+		g.P("func (", ccTypeName, `) XXX_WellKnownType() string { return "`, enum.GetName(), `" }`)
+	}
+
+	g.P()
+}
+
+// The tag is a string like "varint,2,opt,name=fieldname,def=7" that
+// identifies details of the field for the protocol buffer marshaling and unmarshaling
+// code.  The fields are:
+//	wire encoding
+//	protocol tag number
+//	opt,req,rep for optional, required, or repeated
+//	packed whether the encoding is "packed" (optional; repeated primitives only)
+//	name= the original declared name
+//	enum= the name of the enum type if it is an enum-typed field.
+//	proto3 if this field is in a proto3 message
+//	def= string representation of the default value, if any.
+// The default value must be in a representation that can be used at run-time
+// to generate the default value. Thus bools become 0 and 1, for instance.
+func (g *Generator) goTag(message *Descriptor, field *descriptor.FieldDescriptorProto, wiretype string) string {
+	optrepreq := ""
+	switch {
+	case isOptional(field):
+		optrepreq = "opt"
+	case isRequired(field):
+		optrepreq = "req"
+	case isRepeated(field):
+		optrepreq = "rep"
+	}
+	var defaultValue string
+	if dv := field.DefaultValue; dv != nil { // set means an explicit default
+		defaultValue = *dv
+		// Some types need tweaking.
+		switch *field.Type {
+		case descriptor.FieldDescriptorProto_TYPE_BOOL:
+			if defaultValue == "true" {
+				defaultValue = "1"
+			} else {
+				defaultValue = "0"
+			}
+		case descriptor.FieldDescriptorProto_TYPE_STRING,
+			descriptor.FieldDescriptorProto_TYPE_BYTES:
+			// Nothing to do. Quoting is done for the whole tag.
+		case descriptor.FieldDescriptorProto_TYPE_ENUM:
+			// For enums we need to provide the integer constant.
+			obj := g.ObjectNamed(field.GetTypeName())
+			if id, ok := obj.(*ImportedDescriptor); ok {
+				// It is an enum that was publicly imported.
+				// We need the underlying type.
+				obj = id.o
+			}
+			enum, ok := obj.(*EnumDescriptor)
+			if !ok {
+				log.Printf("obj is a %T", obj)
+				if id, ok := obj.(*ImportedDescriptor); ok {
+					log.Printf("id.o is a %T", id.o)
+				}
+				g.Fail("unknown enum type", CamelCaseSlice(obj.TypeName()))
+			}
+			defaultValue = enum.integerValueAsString(defaultValue)
+		}
+		defaultValue = ",def=" + defaultValue
+	}
+	enum := ""
+	if *field.Type == descriptor.FieldDescriptorProto_TYPE_ENUM {
+		// We avoid using obj.PackageName(), because we want to use the
+		// original (proto-world) package name.
+		obj := g.ObjectNamed(field.GetTypeName())
+		if id, ok := obj.(*ImportedDescriptor); ok {
+			obj = id.o
+		}
+		enum = ",enum="
+		if pkg := obj.File().GetPackage(); pkg != "" {
+			enum += pkg + "."
+		}
+		enum += CamelCaseSlice(obj.TypeName())
+	}
+	packed := ""
+	if (field.Options != nil && field.Options.GetPacked()) ||
+		// Per https://developers.google.com/protocol-buffers/docs/proto3#simple:
+		// "In proto3, repeated fields of scalar numeric types use packed encoding by default."
+		(message.proto3() && (field.Options == nil || field.Options.Packed == nil) &&
+			isRepeated(field) && isScalar(field)) {
+		packed = ",packed"
+	}
+	fieldName := field.GetName()
+	name := fieldName
+	if *field.Type == descriptor.FieldDescriptorProto_TYPE_GROUP {
+		// We must use the type name for groups instead of
+		// the field name to preserve capitalization.
+		// type_name in FieldDescriptorProto is fully-qualified,
+		// but we only want the local part.
+		name = *field.TypeName
+		if i := strings.LastIndex(name, "."); i >= 0 {
+			name = name[i+1:]
+		}
+	}
+	if json := field.GetJsonName(); json != "" && json != name {
+		// TODO: escaping might be needed, in which case
+		// perhaps this should be in its own "json" tag.
+		name += ",json=" + json
+	}
+	name = ",name=" + name
+	if message.proto3() {
+		// We only need the extra tag for []byte fields;
+		// no need to add noise for the others.
+		if *field.Type == descriptor.FieldDescriptorProto_TYPE_BYTES {
+			name += ",proto3"
+		}
+
+	}
+	oneof := ""
+	if field.OneofIndex != nil {
+		oneof = ",oneof"
+	}
+	return strconv.Quote(fmt.Sprintf("%s,%d,%s%s%s%s%s%s",
+		wiretype,
+		field.GetNumber(),
+		optrepreq,
+		packed,
+		name,
+		enum,
+		oneof,
+		defaultValue))
+}
+
+func needsStar(typ descriptor.FieldDescriptorProto_Type) bool {
+	switch typ {
+	case descriptor.FieldDescriptorProto_TYPE_GROUP:
+		return false
+	case descriptor.FieldDescriptorProto_TYPE_MESSAGE:
+		return false
+	case descriptor.FieldDescriptorProto_TYPE_BYTES:
+		return false
+	}
+	return true
+}
+
+// TypeName is the printed name appropriate for an item. If the object is in the current file,
+// TypeName drops the package name and underscores the rest.
+// Otherwise the object is from another package; and the result is the underscored
+// package name followed by the item name.
+// The result always has an initial capital.
+func (g *Generator) TypeName(obj Object) string {
+	return g.DefaultPackageName(obj) + CamelCaseSlice(obj.TypeName())
+}
+
+// TypeNameWithPackage is like TypeName, but always includes the package
+// name even if the object is in our own package.
+func (g *Generator) TypeNameWithPackage(obj Object) string {
+	return obj.PackageName() + CamelCaseSlice(obj.TypeName())
+}
+
+// GoType returns a string representing the type name, and the wire type
+func (g *Generator) GoType(message *Descriptor, field *descriptor.FieldDescriptorProto) (typ string, wire string) {
+	// TODO: Options.
+	switch *field.Type {
+	case descriptor.FieldDescriptorProto_TYPE_DOUBLE:
+		typ, wire = "float64", "fixed64"
+	case descriptor.FieldDescriptorProto_TYPE_FLOAT:
+		typ, wire = "float32", "fixed32"
+	case descriptor.FieldDescriptorProto_TYPE_INT64:
+		typ, wire = "int64", "varint"
+	case descriptor.FieldDescriptorProto_TYPE_UINT64:
+		typ, wire = "uint64", "varint"
+	case descriptor.FieldDescriptorProto_TYPE_INT32:
+		typ, wire = "int32", "varint"
+	case descriptor.FieldDescriptorProto_TYPE_UINT32:
+		typ, wire = "uint32", "varint"
+	case descriptor.FieldDescriptorProto_TYPE_FIXED64:
+		typ, wire = "uint64", "fixed64"
+	case descriptor.FieldDescriptorProto_TYPE_FIXED32:
+		typ, wire = "uint32", "fixed32"
+	case descriptor.FieldDescriptorProto_TYPE_BOOL:
+		typ, wire = "bool", "varint"
+	case descriptor.FieldDescriptorProto_TYPE_STRING:
+		typ, wire = "string", "bytes"
+	case descriptor.FieldDescriptorProto_TYPE_GROUP:
+		desc := g.ObjectNamed(field.GetTypeName())
+		typ, wire = "*"+g.TypeName(desc), "group"
+	case descriptor.FieldDescriptorProto_TYPE_MESSAGE:
+		desc := g.ObjectNamed(field.GetTypeName())
+		typ, wire = "*"+g.TypeName(desc), "bytes"
+	case descriptor.FieldDescriptorProto_TYPE_BYTES:
+		typ, wire = "[]byte", "bytes"
+	case descriptor.FieldDescriptorProto_TYPE_ENUM:
+		desc := g.ObjectNamed(field.GetTypeName())
+		typ, wire = g.TypeName(desc), "varint"
+	case descriptor.FieldDescriptorProto_TYPE_SFIXED32:
+		typ, wire = "int32", "fixed32"
+	case descriptor.FieldDescriptorProto_TYPE_SFIXED64:
+		typ, wire = "int64", "fixed64"
+	case descriptor.FieldDescriptorProto_TYPE_SINT32:
+		typ, wire = "int32", "zigzag32"
+	case descriptor.FieldDescriptorProto_TYPE_SINT64:
+		typ, wire = "int64", "zigzag64"
+	default:
+		g.Fail("unknown type for", field.GetName())
+	}
+	if isRepeated(field) {
+		typ = "[]" + typ
+	} else if message != nil && message.proto3() {
+		return
+	} else if field.OneofIndex != nil && message != nil {
+		return
+	} else if needsStar(*field.Type) {
+		typ = "*" + typ
+	}
+	return
+}
+
+func (g *Generator) RecordTypeUse(t string) {
+	if obj, ok := g.typeNameToObject[t]; ok {
+		// Call ObjectNamed to get the true object to record the use.
+		obj = g.ObjectNamed(t)
+		g.usedPackages[obj.PackageName()] = true
+	}
+}
+
+// Method names that may be generated.  Fields with these names get an
+// underscore appended. Any change to this set is a potential incompatible
+// API change because it changes generated field names.
+var methodNames = [...]string{
+	"Reset",
+	"String",
+	"ProtoMessage",
+	"Marshal",
+	"Unmarshal",
+	"ExtensionRangeArray",
+	"ExtensionMap",
+	"Descriptor",
+}
+
+// Names of messages in the `google.protobuf` package for which
+// we will generate XXX_WellKnownType methods.
+var wellKnownTypes = map[string]bool{
+	"Any":       true,
+	"Duration":  true,
+	"Empty":     true,
+	"Struct":    true,
+	"Timestamp": true,
+
+	"Value":       true,
+	"ListValue":   true,
+	"DoubleValue": true,
+	"FloatValue":  true,
+	"Int64Value":  true,
+	"UInt64Value": true,
+	"Int32Value":  true,
+	"UInt32Value": true,
+	"BoolValue":   true,
+	"StringValue": true,
+	"BytesValue":  true,
+}
+
+// Generate the type and default constant definitions for this Descriptor.
+func (g *Generator) generateMessage(message *Descriptor) {
+	// The full type name
+	typeName := message.TypeName()
+	// The full type name, CamelCased.
+	ccTypeName := CamelCaseSlice(typeName)
+
+	usedNames := make(map[string]bool)
+	for _, n := range methodNames {
+		usedNames[n] = true
+	}
+	fieldNames := make(map[*descriptor.FieldDescriptorProto]string)
+	fieldGetterNames := make(map[*descriptor.FieldDescriptorProto]string)
+	fieldTypes := make(map[*descriptor.FieldDescriptorProto]string)
+	mapFieldTypes := make(map[*descriptor.FieldDescriptorProto]string)
+
+	oneofFieldName := make(map[int32]string)                           // indexed by oneof_index field of FieldDescriptorProto
+	oneofDisc := make(map[int32]string)                                // name of discriminator method
+	oneofTypeName := make(map[*descriptor.FieldDescriptorProto]string) // without star
+	oneofInsertPoints := make(map[int32]int)                           // oneof_index => offset of g.Buffer
+
+	g.PrintComments(message.path)
+	g.P("type ", ccTypeName, " struct {")
+	g.In()
+
+	// allocNames finds a conflict-free variation of the given strings,
+	// consistently mutating their suffixes.
+	// It returns the same number of strings.
+	allocNames := func(ns ...string) []string {
+	Loop:
+		for {
+			for _, n := range ns {
+				if usedNames[n] {
+					for i := range ns {
+						ns[i] += "_"
+					}
+					continue Loop
+				}
+			}
+			for _, n := range ns {
+				usedNames[n] = true
+			}
+			return ns
+		}
+	}
+
+	for i, field := range message.Field {
+		// Allocate the getter and the field at the same time so name
+		// collisions create field/method consistent names.
+		// TODO: This allocation occurs based on the order of the fields
+		// in the proto file, meaning that a change in the field
+		// ordering can change generated Method/Field names.
+		base := CamelCase(*field.Name)
+		ns := allocNames(base, "Get"+base)
+		fieldName, fieldGetterName := ns[0], ns[1]
+		typename, wiretype := g.GoType(message, field)
+		jsonName := *field.Name
+		tag := fmt.Sprintf("protobuf:%s json:%q", g.goTag(message, field, wiretype), jsonName+",omitempty")
+
+		fieldNames[field] = fieldName
+		fieldGetterNames[field] = fieldGetterName
+
+		oneof := field.OneofIndex != nil
+		if oneof && oneofFieldName[*field.OneofIndex] == "" {
+			odp := message.OneofDecl[int(*field.OneofIndex)]
+			fname := allocNames(CamelCase(odp.GetName()))[0]
+
+			// This is the first field of a oneof we haven't seen before.
+			// Generate the union field.
+			com := g.PrintComments(fmt.Sprintf("%s,%d,%d", message.path, messageOneofPath, *field.OneofIndex))
+			if com {
+				g.P("//")
+			}
+			g.P("// Types that are valid to be assigned to ", fname, ":")
+			// Generate the rest of this comment later,
+			// when we've computed any disambiguation.
+			oneofInsertPoints[*field.OneofIndex] = g.Buffer.Len()
+
+			dname := "is" + ccTypeName + "_" + fname
+			oneofFieldName[*field.OneofIndex] = fname
+			oneofDisc[*field.OneofIndex] = dname
+			tag := `protobuf_oneof:"` + odp.GetName() + `"`
+			g.P(fname, " ", dname, " `", tag, "`")
+		}
+
+		if *field.Type == descriptor.FieldDescriptorProto_TYPE_MESSAGE {
+			desc := g.ObjectNamed(field.GetTypeName())
+			if d, ok := desc.(*Descriptor); ok && d.GetOptions().GetMapEntry() {
+				// Figure out the Go types and tags for the key and value types.
+				keyField, valField := d.Field[0], d.Field[1]
+				keyType, keyWire := g.GoType(d, keyField)
+				valType, valWire := g.GoType(d, valField)
+				keyTag, valTag := g.goTag(d, keyField, keyWire), g.goTag(d, valField, valWire)
+
+				// We don't use stars, except for message-typed values.
+				// Message and enum types are the only two possibly foreign types used in maps,
+				// so record their use. They are not permitted as map keys.
+				keyType = strings.TrimPrefix(keyType, "*")
+				switch *valField.Type {
+				case descriptor.FieldDescriptorProto_TYPE_ENUM:
+					valType = strings.TrimPrefix(valType, "*")
+					g.RecordTypeUse(valField.GetTypeName())
+				case descriptor.FieldDescriptorProto_TYPE_MESSAGE:
+					g.RecordTypeUse(valField.GetTypeName())
+				default:
+					valType = strings.TrimPrefix(valType, "*")
+				}
+
+				typename = fmt.Sprintf("map[%s]%s", keyType, valType)
+				mapFieldTypes[field] = typename // record for the getter generation
+
+				tag += fmt.Sprintf(" protobuf_key:%s protobuf_val:%s", keyTag, valTag)
+			}
+		}
+
+		fieldTypes[field] = typename
+
+		if oneof {
+			tname := ccTypeName + "_" + fieldName
+			// It is possible for this to collide with a message or enum
+			// nested in this message. Check for collisions.
+			for {
+				ok := true
+				for _, desc := range message.nested {
+					if CamelCaseSlice(desc.TypeName()) == tname {
+						ok = false
+						break
+					}
+				}
+				for _, enum := range message.enums {
+					if CamelCaseSlice(enum.TypeName()) == tname {
+						ok = false
+						break
+					}
+				}
+				if !ok {
+					tname += "_"
+					continue
+				}
+				break
+			}
+
+			oneofTypeName[field] = tname
+			continue
+		}
+
+		g.PrintComments(fmt.Sprintf("%s,%d,%d", message.path, messageFieldPath, i))
+		g.P(fieldName, "\t", typename, "\t`", tag, "`")
+		g.RecordTypeUse(field.GetTypeName())
+	}
+	if len(message.ExtensionRange) > 0 {
+		g.P(g.Pkg["proto"], ".XXX_InternalExtensions `json:\"-\"`")
+	}
+	if !message.proto3() {
+		g.P("XXX_unrecognized\t[]byte `json:\"-\"`")
+	}
+	g.Out()
+	g.P("}")
+
+	// Update g.Buffer to list valid oneof types.
+	// We do this down here, after we've disambiguated the oneof type names.
+	// We go in reverse order of insertion point to avoid invalidating offsets.
+	for oi := int32(len(message.OneofDecl)); oi >= 0; oi-- {
+		ip := oneofInsertPoints[oi]
+		all := g.Buffer.Bytes()
+		rem := all[ip:]
+		g.Buffer = bytes.NewBuffer(all[:ip:ip]) // set cap so we don't scribble on rem
+		for _, field := range message.Field {
+			if field.OneofIndex == nil || *field.OneofIndex != oi {
+				continue
+			}
+			g.P("//\t*", oneofTypeName[field])
+		}
+		g.Buffer.Write(rem)
+	}
+
+	// Reset, String and ProtoMessage methods.
+	g.P("func (m *", ccTypeName, ") Reset() { *m = ", ccTypeName, "{} }")
+	g.P("func (m *", ccTypeName, ") String() string { return ", g.Pkg["proto"], ".CompactTextString(m) }")
+	g.P("func (*", ccTypeName, ") ProtoMessage() {}")
+	var indexes []string
+	for m := message; m != nil; m = m.parent {
+		indexes = append([]string{strconv.Itoa(m.index)}, indexes...)
+	}
+	g.P("func (*", ccTypeName, ") Descriptor() ([]byte, []int) { return ", g.file.VarName(), ", []int{", strings.Join(indexes, ", "), "} }")
+	// TODO: Revisit the decision to use a XXX_WellKnownType method
+	// if we change proto.MessageName to work with multiple equivalents.
+	if message.file.GetPackage() == "google.protobuf" && wellKnownTypes[message.GetName()] {
+		g.P("func (*", ccTypeName, `) XXX_WellKnownType() string { return "`, message.GetName(), `" }`)
+	}
+
+	// Extension support methods
+	var hasExtensions, isMessageSet bool
+	if len(message.ExtensionRange) > 0 {
+		hasExtensions = true
+		// message_set_wire_format only makes sense when extensions are defined.
+		if opts := message.Options; opts != nil && opts.GetMessageSetWireFormat() {
+			isMessageSet = true
+			g.P()
+			g.P("func (m *", ccTypeName, ") Marshal() ([]byte, error) {")
+			g.In()
+			g.P("return ", g.Pkg["proto"], ".MarshalMessageSet(&m.XXX_InternalExtensions)")
+			g.Out()
+			g.P("}")
+			g.P("func (m *", ccTypeName, ") Unmarshal(buf []byte) error {")
+			g.In()
+			g.P("return ", g.Pkg["proto"], ".UnmarshalMessageSet(buf, &m.XXX_InternalExtensions)")
+			g.Out()
+			g.P("}")
+			g.P("func (m *", ccTypeName, ") MarshalJSON() ([]byte, error) {")
+			g.In()
+			g.P("return ", g.Pkg["proto"], ".MarshalMessageSetJSON(&m.XXX_InternalExtensions)")
+			g.Out()
+			g.P("}")
+			g.P("func (m *", ccTypeName, ") UnmarshalJSON(buf []byte) error {")
+			g.In()
+			g.P("return ", g.Pkg["proto"], ".UnmarshalMessageSetJSON(buf, &m.XXX_InternalExtensions)")
+			g.Out()
+			g.P("}")
+			g.P("// ensure ", ccTypeName, " satisfies proto.Marshaler and proto.Unmarshaler")
+			g.P("var _ ", g.Pkg["proto"], ".Marshaler = (*", ccTypeName, ")(nil)")
+			g.P("var _ ", g.Pkg["proto"], ".Unmarshaler = (*", ccTypeName, ")(nil)")
+		}
+
+		g.P()
+		g.P("var extRange_", ccTypeName, " = []", g.Pkg["proto"], ".ExtensionRange{")
+		g.In()
+		for _, r := range message.ExtensionRange {
+			end := fmt.Sprint(*r.End - 1) // make range inclusive on both ends
+			g.P("{", r.Start, ", ", end, "},")
+		}
+		g.Out()
+		g.P("}")
+		g.P("func (*", ccTypeName, ") ExtensionRangeArray() []", g.Pkg["proto"], ".ExtensionRange {")
+		g.In()
+		g.P("return extRange_", ccTypeName)
+		g.Out()
+		g.P("}")
+	}
+
+	// Default constants
+	defNames := make(map[*descriptor.FieldDescriptorProto]string)
+	for _, field := range message.Field {
+		def := field.GetDefaultValue()
+		if def == "" {
+			continue
+		}
+		fieldname := "Default_" + ccTypeName + "_" + CamelCase(*field.Name)
+		defNames[field] = fieldname
+		typename, _ := g.GoType(message, field)
+		if typename[0] == '*' {
+			typename = typename[1:]
+		}
+		kind := "const "
+		switch {
+		case typename == "bool":
+		case typename == "string":
+			def = strconv.Quote(def)
+		case typename == "[]byte":
+			def = "[]byte(" + strconv.Quote(unescape(def)) + ")"
+			kind = "var "
+		case def == "inf", def == "-inf", def == "nan":
+			// These names are known to, and defined by, the protocol language.
+			switch def {
+			case "inf":
+				def = "math.Inf(1)"
+			case "-inf":
+				def = "math.Inf(-1)"
+			case "nan":
+				def = "math.NaN()"
+			}
+			if *field.Type == descriptor.FieldDescriptorProto_TYPE_FLOAT {
+				def = "float32(" + def + ")"
+			}
+			kind = "var "
+		case *field.Type == descriptor.FieldDescriptorProto_TYPE_ENUM:
+			// Must be an enum.  Need to construct the prefixed name.
+			obj := g.ObjectNamed(field.GetTypeName())
+			var enum *EnumDescriptor
+			if id, ok := obj.(*ImportedDescriptor); ok {
+				// The enum type has been publicly imported.
+				enum, _ = id.o.(*EnumDescriptor)
+			} else {
+				enum, _ = obj.(*EnumDescriptor)
+			}
+			if enum == nil {
+				log.Printf("don't know how to generate constant for %s", fieldname)
+				continue
+			}
+			def = g.DefaultPackageName(obj) + enum.prefix() + def
+		}
+		g.P(kind, fieldname, " ", typename, " = ", def)
+		g.file.addExport(message, constOrVarSymbol{fieldname, kind, ""})
+	}
+	g.P()
+
+	// Oneof per-field types, discriminants and getters.
+	//
+	// Generate unexported named types for the discriminant interfaces.
+	// We shouldn't have to do this, but there was (~19 Aug 2015) a compiler/linker bug
+	// that was triggered by using anonymous interfaces here.
+	// TODO: Revisit this and consider reverting back to anonymous interfaces.
+	for oi := range message.OneofDecl {
+		dname := oneofDisc[int32(oi)]
+		g.P("type ", dname, " interface { ", dname, "() }")
+	}
+	g.P()
+	for _, field := range message.Field {
+		if field.OneofIndex == nil {
+			continue
+		}
+		_, wiretype := g.GoType(message, field)
+		tag := "protobuf:" + g.goTag(message, field, wiretype)
+		g.P("type ", oneofTypeName[field], " struct{ ", fieldNames[field], " ", fieldTypes[field], " `", tag, "` }")
+		g.RecordTypeUse(field.GetTypeName())
+	}
+	g.P()
+	for _, field := range message.Field {
+		if field.OneofIndex == nil {
+			continue
+		}
+		g.P("func (*", oneofTypeName[field], ") ", oneofDisc[*field.OneofIndex], "() {}")
+	}
+	g.P()
+	for oi := range message.OneofDecl {
+		fname := oneofFieldName[int32(oi)]
+		g.P("func (m *", ccTypeName, ") Get", fname, "() ", oneofDisc[int32(oi)], " {")
+		g.P("if m != nil { return m.", fname, " }")
+		g.P("return nil")
+		g.P("}")
+	}
+	g.P()
+
+	// Field getters
+	var getters []getterSymbol
+	for _, field := range message.Field {
+		oneof := field.OneofIndex != nil
+
+		fname := fieldNames[field]
+		typename, _ := g.GoType(message, field)
+		if t, ok := mapFieldTypes[field]; ok {
+			typename = t
+		}
+		mname := fieldGetterNames[field]
+		star := ""
+		if needsStar(*field.Type) && typename[0] == '*' {
+			typename = typename[1:]
+			star = "*"
+		}
+
+		// Only export getter symbols for basic types,
+		// and for messages and enums in the same package.
+		// Groups are not exported.
+		// Foreign types can't be hoisted through a public import because
+		// the importer may not already be importing the defining .proto.
+		// As an example, imagine we have an import tree like this:
+		//   A.proto -> B.proto -> C.proto
+		// If A publicly imports B, we need to generate the getters from B in A's output,
+		// but if one such getter returns something from C then we cannot do that
+		// because A is not importing C already.
+		var getter, genType bool
+		switch *field.Type {
+		case descriptor.FieldDescriptorProto_TYPE_GROUP:
+			getter = false
+		case descriptor.FieldDescriptorProto_TYPE_MESSAGE, descriptor.FieldDescriptorProto_TYPE_ENUM:
+			// Only export getter if its return type is in this package.
+			getter = g.ObjectNamed(field.GetTypeName()).PackageName() == message.PackageName()
+			genType = true
+		default:
+			getter = true
+		}
+		if getter {
+			getters = append(getters, getterSymbol{
+				name:     mname,
+				typ:      typename,
+				typeName: field.GetTypeName(),
+				genType:  genType,
+			})
+		}
+
+		g.P("func (m *", ccTypeName, ") "+mname+"() "+typename+" {")
+		g.In()
+		def, hasDef := defNames[field]
+		typeDefaultIsNil := false // whether this field type's default value is a literal nil unless specified
+		switch *field.Type {
+		case descriptor.FieldDescriptorProto_TYPE_BYTES:
+			typeDefaultIsNil = !hasDef
+		case descriptor.FieldDescriptorProto_TYPE_GROUP, descriptor.FieldDescriptorProto_TYPE_MESSAGE:
+			typeDefaultIsNil = true
+		}
+		if isRepeated(field) {
+			typeDefaultIsNil = true
+		}
+		if typeDefaultIsNil && !oneof {
+			// A bytes field with no explicit default needs less generated code,
+			// as does a message or group field, or a repeated field.
+			g.P("if m != nil {")
+			g.In()
+			g.P("return m." + fname)
+			g.Out()
+			g.P("}")
+			g.P("return nil")
+			g.Out()
+			g.P("}")
+			g.P()
+			continue
+		}
+		if !oneof {
+			if message.proto3() {
+				g.P("if m != nil {")
+			} else {
+				g.P("if m != nil && m." + fname + " != nil {")
+			}
+			g.In()
+			g.P("return " + star + "m." + fname)
+			g.Out()
+			g.P("}")
+		} else {
+			uname := oneofFieldName[*field.OneofIndex]
+			tname := oneofTypeName[field]
+			g.P("if x, ok := m.Get", uname, "().(*", tname, "); ok {")
+			g.P("return x.", fname)
+			g.P("}")
+		}
+		if hasDef {
+			if *field.Type != descriptor.FieldDescriptorProto_TYPE_BYTES {
+				g.P("return " + def)
+			} else {
+				// The default is a []byte var.
+				// Make a copy when returning it to be safe.
+				g.P("return append([]byte(nil), ", def, "...)")
+			}
+		} else {
+			switch *field.Type {
+			case descriptor.FieldDescriptorProto_TYPE_BOOL:
+				g.P("return false")
+			case descriptor.FieldDescriptorProto_TYPE_STRING:
+				g.P(`return ""`)
+			case descriptor.FieldDescriptorProto_TYPE_GROUP,
+				descriptor.FieldDescriptorProto_TYPE_MESSAGE,
+				descriptor.FieldDescriptorProto_TYPE_BYTES:
+				// This is only possible for oneof fields.
+				g.P("return nil")
+			case descriptor.FieldDescriptorProto_TYPE_ENUM:
+				// The default default for an enum is the first value in the enum,
+				// not zero.
+				obj := g.ObjectNamed(field.GetTypeName())
+				var enum *EnumDescriptor
+				if id, ok := obj.(*ImportedDescriptor); ok {
+					// The enum type has been publicly imported.
+					enum, _ = id.o.(*EnumDescriptor)
+				} else {
+					enum, _ = obj.(*EnumDescriptor)
+				}
+				if enum == nil {
+					log.Printf("don't know how to generate getter for %s", field.GetName())
+					continue
+				}
+				if len(enum.Value) == 0 {
+					g.P("return 0 // empty enum")
+				} else {
+					first := enum.Value[0].GetName()
+					g.P("return ", g.DefaultPackageName(obj)+enum.prefix()+first)
+				}
+			default:
+				g.P("return 0")
+			}
+		}
+		g.Out()
+		g.P("}")
+		g.P()
+	}
+
+	if !message.group {
+		ms := &messageSymbol{
+			sym:           ccTypeName,
+			hasExtensions: hasExtensions,
+			isMessageSet:  isMessageSet,
+			hasOneof:      len(message.OneofDecl) > 0,
+			getters:       getters,
+		}
+		g.file.addExport(message, ms)
+	}
+
+	// Oneof functions
+	if len(message.OneofDecl) > 0 {
+		fieldWire := make(map[*descriptor.FieldDescriptorProto]string)
+
+		// method
+		enc := "_" + ccTypeName + "_OneofMarshaler"
+		dec := "_" + ccTypeName + "_OneofUnmarshaler"
+		size := "_" + ccTypeName + "_OneofSizer"
+		encSig := "(msg " + g.Pkg["proto"] + ".Message, b *" + g.Pkg["proto"] + ".Buffer) error"
+		decSig := "(msg " + g.Pkg["proto"] + ".Message, tag, wire int, b *" + g.Pkg["proto"] + ".Buffer) (bool, error)"
+		sizeSig := "(msg " + g.Pkg["proto"] + ".Message) (n int)"
+
+		g.P("// XXX_OneofFuncs is for the internal use of the proto package.")
+		g.P("func (*", ccTypeName, ") XXX_OneofFuncs() (func", encSig, ", func", decSig, ", func", sizeSig, ", []interface{}) {")
+		g.P("return ", enc, ", ", dec, ", ", size, ", []interface{}{")
+		for _, field := range message.Field {
+			if field.OneofIndex == nil {
+				continue
+			}
+			g.P("(*", oneofTypeName[field], ")(nil),")
+		}
+		g.P("}")
+		g.P("}")
+		g.P()
+
+		// marshaler
+		g.P("func ", enc, encSig, " {")
+		g.P("m := msg.(*", ccTypeName, ")")
+		for oi, odp := range message.OneofDecl {
+			g.P("// ", odp.GetName())
+			fname := oneofFieldName[int32(oi)]
+			g.P("switch x := m.", fname, ".(type) {")
+			for _, field := range message.Field {
+				if field.OneofIndex == nil || int(*field.OneofIndex) != oi {
+					continue
+				}
+				g.P("case *", oneofTypeName[field], ":")
+				var wire, pre, post string
+				val := "x." + fieldNames[field] // overridden for TYPE_BOOL
+				canFail := false                // only TYPE_MESSAGE and TYPE_GROUP can fail
+				switch *field.Type {
+				case descriptor.FieldDescriptorProto_TYPE_DOUBLE:
+					wire = "WireFixed64"
+					pre = "b.EncodeFixed64(" + g.Pkg["math"] + ".Float64bits("
+					post = "))"
+				case descriptor.FieldDescriptorProto_TYPE_FLOAT:
+					wire = "WireFixed32"
+					pre = "b.EncodeFixed32(uint64(" + g.Pkg["math"] + ".Float32bits("
+					post = ")))"
+				case descriptor.FieldDescriptorProto_TYPE_INT64,
+					descriptor.FieldDescriptorProto_TYPE_UINT64:
+					wire = "WireVarint"
+					pre, post = "b.EncodeVarint(uint64(", "))"
+				case descriptor.FieldDescriptorProto_TYPE_INT32,
+					descriptor.FieldDescriptorProto_TYPE_UINT32,
+					descriptor.FieldDescriptorProto_TYPE_ENUM:
+					wire = "WireVarint"
+					pre, post = "b.EncodeVarint(uint64(", "))"
+				case descriptor.FieldDescriptorProto_TYPE_FIXED64,
+					descriptor.FieldDescriptorProto_TYPE_SFIXED64:
+					wire = "WireFixed64"
+					pre, post = "b.EncodeFixed64(uint64(", "))"
+				case descriptor.FieldDescriptorProto_TYPE_FIXED32,
+					descriptor.FieldDescriptorProto_TYPE_SFIXED32:
+					wire = "WireFixed32"
+					pre, post = "b.EncodeFixed32(uint64(", "))"
+				case descriptor.FieldDescriptorProto_TYPE_BOOL:
+					// bool needs special handling.
+					g.P("t := uint64(0)")
+					g.P("if ", val, " { t = 1 }")
+					val = "t"
+					wire = "WireVarint"
+					pre, post = "b.EncodeVarint(", ")"
+				case descriptor.FieldDescriptorProto_TYPE_STRING:
+					wire = "WireBytes"
+					pre, post = "b.EncodeStringBytes(", ")"
+				case descriptor.FieldDescriptorProto_TYPE_GROUP:
+					wire = "WireStartGroup"
+					pre, post = "b.Marshal(", ")"
+					canFail = true
+				case descriptor.FieldDescriptorProto_TYPE_MESSAGE:
+					wire = "WireBytes"
+					pre, post = "b.EncodeMessage(", ")"
+					canFail = true
+				case descriptor.FieldDescriptorProto_TYPE_BYTES:
+					wire = "WireBytes"
+					pre, post = "b.EncodeRawBytes(", ")"
+				case descriptor.FieldDescriptorProto_TYPE_SINT32:
+					wire = "WireVarint"
+					pre, post = "b.EncodeZigzag32(uint64(", "))"
+				case descriptor.FieldDescriptorProto_TYPE_SINT64:
+					wire = "WireVarint"
+					pre, post = "b.EncodeZigzag64(uint64(", "))"
+				default:
+					g.Fail("unhandled oneof field type ", field.Type.String())
+				}
+				fieldWire[field] = wire
+				g.P("b.EncodeVarint(", field.Number, "<<3|", g.Pkg["proto"], ".", wire, ")")
+				if !canFail {
+					g.P(pre, val, post)
+				} else {
+					g.P("if err := ", pre, val, post, "; err != nil {")
+					g.P("return err")
+					g.P("}")
+				}
+				if *field.Type == descriptor.FieldDescriptorProto_TYPE_GROUP {
+					g.P("b.EncodeVarint(", field.Number, "<<3|", g.Pkg["proto"], ".WireEndGroup)")
+				}
+			}
+			g.P("case nil:")
+			g.P("default: return ", g.Pkg["fmt"], `.Errorf("`, ccTypeName, ".", fname, ` has unexpected type %T", x)`)
+			g.P("}")
+		}
+		g.P("return nil")
+		g.P("}")
+		g.P()
+
+		// unmarshaler
+		g.P("func ", dec, decSig, " {")
+		g.P("m := msg.(*", ccTypeName, ")")
+		g.P("switch tag {")
+		for _, field := range message.Field {
+			if field.OneofIndex == nil {
+				continue
+			}
+			odp := message.OneofDecl[int(*field.OneofIndex)]
+			g.P("case ", field.Number, ": // ", odp.GetName(), ".", *field.Name)
+			g.P("if wire != ", g.Pkg["proto"], ".", fieldWire[field], " {")
+			g.P("return true, ", g.Pkg["proto"], ".ErrInternalBadWireType")
+			g.P("}")
+			lhs := "x, err" // overridden for TYPE_MESSAGE and TYPE_GROUP
+			var dec, cast, cast2 string
+			switch *field.Type {
+			case descriptor.FieldDescriptorProto_TYPE_DOUBLE:
+				dec, cast = "b.DecodeFixed64()", g.Pkg["math"]+".Float64frombits"
+			case descriptor.FieldDescriptorProto_TYPE_FLOAT:
+				dec, cast, cast2 = "b.DecodeFixed32()", "uint32", g.Pkg["math"]+".Float32frombits"
+			case descriptor.FieldDescriptorProto_TYPE_INT64:
+				dec, cast = "b.DecodeVarint()", "int64"
+			case descriptor.FieldDescriptorProto_TYPE_UINT64:
+				dec = "b.DecodeVarint()"
+			case descriptor.FieldDescriptorProto_TYPE_INT32:
+				dec, cast = "b.DecodeVarint()", "int32"
+			case descriptor.FieldDescriptorProto_TYPE_FIXED64:
+				dec = "b.DecodeFixed64()"
+			case descriptor.FieldDescriptorProto_TYPE_FIXED32:
+				dec, cast = "b.DecodeFixed32()", "uint32"
+			case descriptor.FieldDescriptorProto_TYPE_BOOL:
+				dec = "b.DecodeVarint()"
+				// handled specially below
+			case descriptor.FieldDescriptorProto_TYPE_STRING:
+				dec = "b.DecodeStringBytes()"
+			case descriptor.FieldDescriptorProto_TYPE_GROUP:
+				g.P("msg := new(", fieldTypes[field][1:], ")") // drop star
+				lhs = "err"
+				dec = "b.DecodeGroup(msg)"
+				// handled specially below
+			case descriptor.FieldDescriptorProto_TYPE_MESSAGE:
+				g.P("msg := new(", fieldTypes[field][1:], ")") // drop star
+				lhs = "err"
+				dec = "b.DecodeMessage(msg)"
+				// handled specially below
+			case descriptor.FieldDescriptorProto_TYPE_BYTES:
+				dec = "b.DecodeRawBytes(true)"
+			case descriptor.FieldDescriptorProto_TYPE_UINT32:
+				dec, cast = "b.DecodeVarint()", "uint32"
+			case descriptor.FieldDescriptorProto_TYPE_ENUM:
+				dec, cast = "b.DecodeVarint()", fieldTypes[field]
+			case descriptor.FieldDescriptorProto_TYPE_SFIXED32:
+				dec, cast = "b.DecodeFixed32()", "int32"
+			case descriptor.FieldDescriptorProto_TYPE_SFIXED64:
+				dec, cast = "b.DecodeFixed64()", "int64"
+			case descriptor.FieldDescriptorProto_TYPE_SINT32:
+				dec, cast = "b.DecodeZigzag32()", "int32"
+			case descriptor.FieldDescriptorProto_TYPE_SINT64:
+				dec, cast = "b.DecodeZigzag64()", "int64"
+			default:
+				g.Fail("unhandled oneof field type ", field.Type.String())
+			}
+			g.P(lhs, " := ", dec)
+			val := "x"
+			if cast != "" {
+				val = cast + "(" + val + ")"
+			}
+			if cast2 != "" {
+				val = cast2 + "(" + val + ")"
+			}
+			switch *field.Type {
+			case descriptor.FieldDescriptorProto_TYPE_BOOL:
+				val += " != 0"
+			case descriptor.FieldDescriptorProto_TYPE_GROUP,
+				descriptor.FieldDescriptorProto_TYPE_MESSAGE:
+				val = "msg"
+			}
+			g.P("m.", oneofFieldName[*field.OneofIndex], " = &", oneofTypeName[field], "{", val, "}")
+			g.P("return true, err")
+		}
+		g.P("default: return false, nil")
+		g.P("}")
+		g.P("}")
+		g.P()
+
+		// sizer
+		g.P("func ", size, sizeSig, " {")
+		g.P("m := msg.(*", ccTypeName, ")")
+		for oi, odp := range message.OneofDecl {
+			g.P("// ", odp.GetName())
+			fname := oneofFieldName[int32(oi)]
+			g.P("switch x := m.", fname, ".(type) {")
+			for _, field := range message.Field {
+				if field.OneofIndex == nil || int(*field.OneofIndex) != oi {
+					continue
+				}
+				g.P("case *", oneofTypeName[field], ":")
+				val := "x." + fieldNames[field]
+				var wire, varint, fixed string
+				switch *field.Type {
+				case descriptor.FieldDescriptorProto_TYPE_DOUBLE:
+					wire = "WireFixed64"
+					fixed = "8"
+				case descriptor.FieldDescriptorProto_TYPE_FLOAT:
+					wire = "WireFixed32"
+					fixed = "4"
+				case descriptor.FieldDescriptorProto_TYPE_INT64,
+					descriptor.FieldDescriptorProto_TYPE_UINT64,
+					descriptor.FieldDescriptorProto_TYPE_INT32,
+					descriptor.FieldDescriptorProto_TYPE_UINT32,
+					descriptor.FieldDescriptorProto_TYPE_ENUM:
+					wire = "WireVarint"
+					varint = val
+				case descriptor.FieldDescriptorProto_TYPE_FIXED64,
+					descriptor.FieldDescriptorProto_TYPE_SFIXED64:
+					wire = "WireFixed64"
+					fixed = "8"
+				case descriptor.FieldDescriptorProto_TYPE_FIXED32,
+					descriptor.FieldDescriptorProto_TYPE_SFIXED32:
+					wire = "WireFixed32"
+					fixed = "4"
+				case descriptor.FieldDescriptorProto_TYPE_BOOL:
+					wire = "WireVarint"
+					fixed = "1"
+				case descriptor.FieldDescriptorProto_TYPE_STRING:
+					wire = "WireBytes"
+					fixed = "len(" + val + ")"
+					varint = fixed
+				case descriptor.FieldDescriptorProto_TYPE_GROUP:
+					wire = "WireStartGroup"
+					fixed = g.Pkg["proto"] + ".Size(" + val + ")"
+				case descriptor.FieldDescriptorProto_TYPE_MESSAGE:
+					wire = "WireBytes"
+					g.P("s := ", g.Pkg["proto"], ".Size(", val, ")")
+					fixed = "s"
+					varint = fixed
+				case descriptor.FieldDescriptorProto_TYPE_BYTES:
+					wire = "WireBytes"
+					fixed = "len(" + val + ")"
+					varint = fixed
+				case descriptor.FieldDescriptorProto_TYPE_SINT32:
+					wire = "WireVarint"
+					varint = "(uint32(" + val + ") << 1) ^ uint32((int32(" + val + ") >> 31))"
+				case descriptor.FieldDescriptorProto_TYPE_SINT64:
+					wire = "WireVarint"
+					varint = "uint64(" + val + " << 1) ^ uint64((int64(" + val + ") >> 63))"
+				default:
+					g.Fail("unhandled oneof field type ", field.Type.String())
+				}
+				g.P("n += ", g.Pkg["proto"], ".SizeVarint(", field.Number, "<<3|", g.Pkg["proto"], ".", wire, ")")
+				if varint != "" {
+					g.P("n += ", g.Pkg["proto"], ".SizeVarint(uint64(", varint, "))")
+				}
+				if fixed != "" {
+					g.P("n += ", fixed)
+				}
+				if *field.Type == descriptor.FieldDescriptorProto_TYPE_GROUP {
+					g.P("n += ", g.Pkg["proto"], ".SizeVarint(", field.Number, "<<3|", g.Pkg["proto"], ".WireEndGroup)")
+				}
+			}
+			g.P("case nil:")
+			g.P("default:")
+			g.P("panic(", g.Pkg["fmt"], ".Sprintf(\"proto: unexpected type %T in oneof\", x))")
+			g.P("}")
+		}
+		g.P("return n")
+		g.P("}")
+		g.P()
+	}
+
+	for _, ext := range message.ext {
+		g.generateExtension(ext)
+	}
+
+	fullName := strings.Join(message.TypeName(), ".")
+	if g.file.Package != nil {
+		fullName = *g.file.Package + "." + fullName
+	}
+
+	g.addInitf("%s.RegisterType((*%s)(nil), %q)", g.Pkg["proto"], ccTypeName, fullName)
+}
+
+var escapeChars = [256]byte{
+	'a': '\a', 'b': '\b', 'f': '\f', 'n': '\n', 'r': '\r', 't': '\t', 'v': '\v', '\\': '\\', '"': '"', '\'': '\'', '?': '?',
+}
+
+// unescape reverses the "C" escaping that protoc does for default values of bytes fields.
+// It is best effort in that it effectively ignores malformed input. Seemingly invalid escape
+// sequences are conveyed, unmodified, into the decoded result.
+func unescape(s string) string {
+	// NB: Sadly, we can't use strconv.Unquote because protoc will escape both
+	// single and double quotes, but strconv.Unquote only allows one or the
+	// other (based on actual surrounding quotes of its input argument).
+
+	var out []byte
+	for len(s) > 0 {
+		// regular character, or too short to be valid escape
+		if s[0] != '\\' || len(s) < 2 {
+			out = append(out, s[0])
+			s = s[1:]
+		} else if c := escapeChars[s[1]]; c != 0 {
+			// escape sequence
+			out = append(out, c)
+			s = s[2:]
+		} else if s[1] == 'x' || s[1] == 'X' {
+			// hex escape, e.g. "\x80
+			if len(s) < 4 {
+				// too short to be valid
+				out = append(out, s[:2]...)
+				s = s[2:]
+				continue
+			}
+			v, err := strconv.ParseUint(s[2:4], 16, 8)
+			if err != nil {
+				out = append(out, s[:4]...)
+			} else {
+				out = append(out, byte(v))
+			}
+			s = s[4:]
+		} else if '0' <= s[1] && s[1] <= '7' {
+			// octal escape, can vary from 1 to 3 octal digits; e.g., "\0" "\40" or "\164"
+			// so consume up to 2 more bytes or up to end-of-string
+			n := len(s[1:]) - len(strings.TrimLeft(s[1:], "01234567"))
+			if n > 3 {
+				n = 3
+			}
+			v, err := strconv.ParseUint(s[1:1+n], 8, 8)
+			if err != nil {
+				out = append(out, s[:1+n]...)
+			} else {
+				out = append(out, byte(v))
+			}
+			s = s[1+n:]
+		} else {
+			// bad escape, just propagate the slash as-is
+			out = append(out, s[0])
+			s = s[1:]
+		}
+	}
+
+	return string(out)
+}
+
+func (g *Generator) generateExtension(ext *ExtensionDescriptor) {
+	ccTypeName := ext.DescName()
+
+	extObj := g.ObjectNamed(*ext.Extendee)
+	var extDesc *Descriptor
+	if id, ok := extObj.(*ImportedDescriptor); ok {
+		// This is extending a publicly imported message.
+		// We need the underlying type for goTag.
+		extDesc = id.o.(*Descriptor)
+	} else {
+		extDesc = extObj.(*Descriptor)
+	}
+	extendedType := "*" + g.TypeName(extObj) // always use the original
+	field := ext.FieldDescriptorProto
+	fieldType, wireType := g.GoType(ext.parent, field)
+	tag := g.goTag(extDesc, field, wireType)
+	g.RecordTypeUse(*ext.Extendee)
+	if n := ext.FieldDescriptorProto.TypeName; n != nil {
+		// foreign extension type
+		g.RecordTypeUse(*n)
+	}
+
+	typeName := ext.TypeName()
+
+	// Special case for proto2 message sets: If this extension is extending
+	// proto2_bridge.MessageSet, and its final name component is "message_set_extension",
+	// then drop that last component.
+	mset := false
+	if extendedType == "*proto2_bridge.MessageSet" && typeName[len(typeName)-1] == "message_set_extension" {
+		typeName = typeName[:len(typeName)-1]
+		mset = true
+	}
+
+	// For text formatting, the package must be exactly what the .proto file declares,
+	// ignoring overrides such as the go_package option, and with no dot/underscore mapping.
+	extName := strings.Join(typeName, ".")
+	if g.file.Package != nil {
+		extName = *g.file.Package + "." + extName
+	}
+
+	g.P("var ", ccTypeName, " = &", g.Pkg["proto"], ".ExtensionDesc{")
+	g.In()
+	g.P("ExtendedType: (", extendedType, ")(nil),")
+	g.P("ExtensionType: (", fieldType, ")(nil),")
+	g.P("Field: ", field.Number, ",")
+	g.P(`Name: "`, extName, `",`)
+	g.P("Tag: ", tag, ",")
+	g.P(`Filename: "`, g.file.GetName(), `",`)
+
+	g.Out()
+	g.P("}")
+	g.P()
+
+	if mset {
+		// Generate a bit more code to register with message_set.go.
+		g.addInitf("%s.RegisterMessageSetType((%s)(nil), %d, %q)", g.Pkg["proto"], fieldType, *field.Number, extName)
+	}
+
+	g.file.addExport(ext, constOrVarSymbol{ccTypeName, "var", ""})
+}
+
+func (g *Generator) generateInitFunction() {
+	for _, enum := range g.file.enum {
+		g.generateEnumRegistration(enum)
+	}
+	for _, d := range g.file.desc {
+		for _, ext := range d.ext {
+			g.generateExtensionRegistration(ext)
+		}
+	}
+	for _, ext := range g.file.ext {
+		g.generateExtensionRegistration(ext)
+	}
+	if len(g.init) == 0 {
+		return
+	}
+	g.P("func init() {")
+	g.In()
+	for _, l := range g.init {
+		g.P(l)
+	}
+	g.Out()
+	g.P("}")
+	g.init = nil
+}
+
+func (g *Generator) generateFileDescriptor(file *FileDescriptor) {
+	// Make a copy and trim source_code_info data.
+	// TODO: Trim this more when we know exactly what we need.
+	pb := proto.Clone(file.FileDescriptorProto).(*descriptor.FileDescriptorProto)
+	pb.SourceCodeInfo = nil
+
+	b, err := proto.Marshal(pb)
+	if err != nil {
+		g.Fail(err.Error())
+	}
+
+	var buf bytes.Buffer
+	w, _ := gzip.NewWriterLevel(&buf, gzip.BestCompression)
+	w.Write(b)
+	w.Close()
+	b = buf.Bytes()
+
+	v := file.VarName()
+	g.P()
+	g.P("func init() { ", g.Pkg["proto"], ".RegisterFile(", strconv.Quote(*file.Name), ", ", v, ") }")
+	g.P("var ", v, " = []byte{")
+	g.In()
+	g.P("// ", len(b), " bytes of a gzipped FileDescriptorProto")
+	for len(b) > 0 {
+		n := 16
+		if n > len(b) {
+			n = len(b)
+		}
+
+		s := ""
+		for _, c := range b[:n] {
+			s += fmt.Sprintf("0x%02x,", c)
+		}
+		g.P(s)
+
+		b = b[n:]
+	}
+	g.Out()
+	g.P("}")
+}
+
+func (g *Generator) generateEnumRegistration(enum *EnumDescriptor) {
+	// // We always print the full (proto-world) package name here.
+	pkg := enum.File().GetPackage()
+	if pkg != "" {
+		pkg += "."
+	}
+	// The full type name
+	typeName := enum.TypeName()
+	// The full type name, CamelCased.
+	ccTypeName := CamelCaseSlice(typeName)
+	g.addInitf("%s.RegisterEnum(%q, %[3]s_name, %[3]s_value)", g.Pkg["proto"], pkg+ccTypeName, ccTypeName)
+}
+
+func (g *Generator) generateExtensionRegistration(ext *ExtensionDescriptor) {
+	g.addInitf("%s.RegisterExtension(%s)", g.Pkg["proto"], ext.DescName())
+}
+
+// And now lots of helper functions.
+
+// Is c an ASCII lower-case letter?
+func isASCIILower(c byte) bool {
+	return 'a' <= c && c <= 'z'
+}
+
+// Is c an ASCII digit?
+func isASCIIDigit(c byte) bool {
+	return '0' <= c && c <= '9'
+}
+
+// CamelCase returns the CamelCased name.
+// If there is an interior underscore followed by a lower case letter,
+// drop the underscore and convert the letter to upper case.
+// There is a remote possibility of this rewrite causing a name collision,
+// but it's so remote we're prepared to pretend it's nonexistent - since the
+// C++ generator lowercases names, it's extremely unlikely to have two fields
+// with different capitalizations.
+// In short, _my_field_name_2 becomes XMyFieldName_2.
+func CamelCase(s string) string {
+	if s == "" {
+		return ""
+	}
+	t := make([]byte, 0, 32)
+	i := 0
+	if s[0] == '_' {
+		// Need a capital letter; drop the '_'.
+		t = append(t, 'X')
+		i++
+	}
+	// Invariant: if the next letter is lower case, it must be converted
+	// to upper case.
+	// That is, we process a word at a time, where words are marked by _ or
+	// upper case letter. Digits are treated as words.
+	for ; i < len(s); i++ {
+		c := s[i]
+		if c == '_' && i+1 < len(s) && isASCIILower(s[i+1]) {
+			continue // Skip the underscore in s.
+		}
+		if isASCIIDigit(c) {
+			t = append(t, c)
+			continue
+		}
+		// Assume we have a letter now - if not, it's a bogus identifier.
+		// The next word is a sequence of characters that must start upper case.
+		if isASCIILower(c) {
+			c ^= ' ' // Make it a capital letter.
+		}
+		t = append(t, c) // Guaranteed not lower case.
+		// Accept lower case sequence that follows.
+		for i+1 < len(s) && isASCIILower(s[i+1]) {
+			i++
+			t = append(t, s[i])
+		}
+	}
+	return string(t)
+}
+
+// CamelCaseSlice is like CamelCase, but the argument is a slice of strings to
+// be joined with "_".
+func CamelCaseSlice(elem []string) string { return CamelCase(strings.Join(elem, "_")) }
+
+// dottedSlice turns a sliced name into a dotted name.
+func dottedSlice(elem []string) string { return strings.Join(elem, ".") }
+
+// Is this field optional?
+func isOptional(field *descriptor.FieldDescriptorProto) bool {
+	return field.Label != nil && *field.Label == descriptor.FieldDescriptorProto_LABEL_OPTIONAL
+}
+
+// Is this field required?
+func isRequired(field *descriptor.FieldDescriptorProto) bool {
+	return field.Label != nil && *field.Label == descriptor.FieldDescriptorProto_LABEL_REQUIRED
+}
+
+// Is this field repeated?
+func isRepeated(field *descriptor.FieldDescriptorProto) bool {
+	return field.Label != nil && *field.Label == descriptor.FieldDescriptorProto_LABEL_REPEATED
+}
+
+// Is this field a scalar numeric type?
+func isScalar(field *descriptor.FieldDescriptorProto) bool {
+	if field.Type == nil {
+		return false
+	}
+	switch *field.Type {
+	case descriptor.FieldDescriptorProto_TYPE_DOUBLE,
+		descriptor.FieldDescriptorProto_TYPE_FLOAT,
+		descriptor.FieldDescriptorProto_TYPE_INT64,
+		descriptor.FieldDescriptorProto_TYPE_UINT64,
+		descriptor.FieldDescriptorProto_TYPE_INT32,
+		descriptor.FieldDescriptorProto_TYPE_FIXED64,
+		descriptor.FieldDescriptorProto_TYPE_FIXED32,
+		descriptor.FieldDescriptorProto_TYPE_BOOL,
+		descriptor.FieldDescriptorProto_TYPE_UINT32,
+		descriptor.FieldDescriptorProto_TYPE_ENUM,
+		descriptor.FieldDescriptorProto_TYPE_SFIXED32,
+		descriptor.FieldDescriptorProto_TYPE_SFIXED64,
+		descriptor.FieldDescriptorProto_TYPE_SINT32,
+		descriptor.FieldDescriptorProto_TYPE_SINT64:
+		return true
+	default:
+		return false
+	}
+}
+
+// badToUnderscore is the mapping function used to generate Go names from package names,
+// which can be dotted in the input .proto file.  It replaces non-identifier characters such as
+// dot or dash with underscore.
+func badToUnderscore(r rune) rune {
+	if unicode.IsLetter(r) || unicode.IsDigit(r) || r == '_' {
+		return r
+	}
+	return '_'
+}
+
+// baseName returns the last path element of the name, with the last dotted suffix removed.
+func baseName(name string) string {
+	// First, find the last element
+	if i := strings.LastIndex(name, "/"); i >= 0 {
+		name = name[i+1:]
+	}
+	// Now drop the suffix
+	if i := strings.LastIndex(name, "."); i >= 0 {
+		name = name[0:i]
+	}
+	return name
+}
+
+// The SourceCodeInfo message describes the location of elements of a parsed
+// .proto file by way of a "path", which is a sequence of integers that
+// describe the route from a FileDescriptorProto to the relevant submessage.
+// The path alternates between a field number of a repeated field, and an index
+// into that repeated field. The constants below define the field numbers that
+// are used.
+//
+// See descriptor.proto for more information about this.
+const (
+	// tag numbers in FileDescriptorProto
+	packagePath = 2 // package
+	messagePath = 4 // message_type
+	enumPath    = 5 // enum_type
+	// tag numbers in DescriptorProto
+	messageFieldPath   = 2 // field
+	messageMessagePath = 3 // nested_type
+	messageEnumPath    = 4 // enum_type
+	messageOneofPath   = 8 // oneof_decl
+	// tag numbers in EnumDescriptorProto
+	enumValuePath = 2 // value
+)
diff --git a/vendor/github.com/golang/protobuf/protoc-gen-go/grpc/grpc.go b/vendor/github.com/golang/protobuf/protoc-gen-go/grpc/grpc.go
new file mode 100644
index 0000000..2660e47
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/protoc-gen-go/grpc/grpc.go
@@ -0,0 +1,463 @@
+// Go support for Protocol Buffers - Google's data interchange format
+//
+// Copyright 2015 The Go Authors.  All rights reserved.
+// https://github.com/golang/protobuf
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Package grpc outputs gRPC service descriptions in Go code.
+// It runs as a plugin for the Go protocol buffer compiler plugin.
+// It is linked in to protoc-gen-go.
+package grpc
+
+import (
+	"fmt"
+	"path"
+	"strconv"
+	"strings"
+
+	pb "github.com/golang/protobuf/protoc-gen-go/descriptor"
+	"github.com/golang/protobuf/protoc-gen-go/generator"
+)
+
+// generatedCodeVersion indicates a version of the generated code.
+// It is incremented whenever an incompatibility between the generated code and
+// the grpc package is introduced; the generated code references
+// a constant, grpc.SupportPackageIsVersionN (where N is generatedCodeVersion).
+const generatedCodeVersion = 4
+
+// Paths for packages used by code generated in this file,
+// relative to the import_prefix of the generator.Generator.
+const (
+	contextPkgPath = "golang.org/x/net/context"
+	grpcPkgPath    = "google.golang.org/grpc"
+)
+
+func init() {
+	generator.RegisterPlugin(new(grpc))
+}
+
+// grpc is an implementation of the Go protocol buffer compiler's
+// plugin architecture.  It generates bindings for gRPC support.
+type grpc struct {
+	gen *generator.Generator
+}
+
+// Name returns the name of this plugin, "grpc".
+func (g *grpc) Name() string {
+	return "grpc"
+}
+
+// The names for packages imported in the generated code.
+// They may vary from the final path component of the import path
+// if the name is used by other packages.
+var (
+	contextPkg string
+	grpcPkg    string
+)
+
+// Init initializes the plugin.
+func (g *grpc) Init(gen *generator.Generator) {
+	g.gen = gen
+	contextPkg = generator.RegisterUniquePackageName("context", nil)
+	grpcPkg = generator.RegisterUniquePackageName("grpc", nil)
+}
+
+// Given a type name defined in a .proto, return its object.
+// Also record that we're using it, to guarantee the associated import.
+func (g *grpc) objectNamed(name string) generator.Object {
+	g.gen.RecordTypeUse(name)
+	return g.gen.ObjectNamed(name)
+}
+
+// Given a type name defined in a .proto, return its name as we will print it.
+func (g *grpc) typeName(str string) string {
+	return g.gen.TypeName(g.objectNamed(str))
+}
+
+// P forwards to g.gen.P.
+func (g *grpc) P(args ...interface{}) { g.gen.P(args...) }
+
+// Generate generates code for the services in the given file.
+func (g *grpc) Generate(file *generator.FileDescriptor) {
+	if len(file.FileDescriptorProto.Service) == 0 {
+		return
+	}
+
+	g.P("// Reference imports to suppress errors if they are not otherwise used.")
+	g.P("var _ ", contextPkg, ".Context")
+	g.P("var _ ", grpcPkg, ".ClientConn")
+	g.P()
+
+	// Assert version compatibility.
+	g.P("// This is a compile-time assertion to ensure that this generated file")
+	g.P("// is compatible with the grpc package it is being compiled against.")
+	g.P("const _ = ", grpcPkg, ".SupportPackageIsVersion", generatedCodeVersion)
+	g.P()
+
+	for i, service := range file.FileDescriptorProto.Service {
+		g.generateService(file, service, i)
+	}
+}
+
+// GenerateImports generates the import declaration for this file.
+func (g *grpc) GenerateImports(file *generator.FileDescriptor) {
+	if len(file.FileDescriptorProto.Service) == 0 {
+		return
+	}
+	g.P("import (")
+	g.P(contextPkg, " ", strconv.Quote(path.Join(g.gen.ImportPrefix, contextPkgPath)))
+	g.P(grpcPkg, " ", strconv.Quote(path.Join(g.gen.ImportPrefix, grpcPkgPath)))
+	g.P(")")
+	g.P()
+}
+
+// reservedClientName records whether a client name is reserved on the client side.
+var reservedClientName = map[string]bool{
+// TODO: do we need any in gRPC?
+}
+
+func unexport(s string) string { return strings.ToLower(s[:1]) + s[1:] }
+
+// generateService generates all the code for the named service.
+func (g *grpc) generateService(file *generator.FileDescriptor, service *pb.ServiceDescriptorProto, index int) {
+	path := fmt.Sprintf("6,%d", index) // 6 means service.
+
+	origServName := service.GetName()
+	fullServName := origServName
+	if pkg := file.GetPackage(); pkg != "" {
+		fullServName = pkg + "." + fullServName
+	}
+	servName := generator.CamelCase(origServName)
+
+	g.P()
+	g.P("// Client API for ", servName, " service")
+	g.P()
+
+	// Client interface.
+	g.P("type ", servName, "Client interface {")
+	for i, method := range service.Method {
+		g.gen.PrintComments(fmt.Sprintf("%s,2,%d", path, i)) // 2 means method in a service.
+		g.P(g.generateClientSignature(servName, method))
+	}
+	g.P("}")
+	g.P()
+
+	// Client structure.
+	g.P("type ", unexport(servName), "Client struct {")
+	g.P("cc *", grpcPkg, ".ClientConn")
+	g.P("}")
+	g.P()
+
+	// NewClient factory.
+	g.P("func New", servName, "Client (cc *", grpcPkg, ".ClientConn) ", servName, "Client {")
+	g.P("return &", unexport(servName), "Client{cc}")
+	g.P("}")
+	g.P()
+
+	var methodIndex, streamIndex int
+	serviceDescVar := "_" + servName + "_serviceDesc"
+	// Client method implementations.
+	for _, method := range service.Method {
+		var descExpr string
+		if !method.GetServerStreaming() && !method.GetClientStreaming() {
+			// Unary RPC method
+			descExpr = fmt.Sprintf("&%s.Methods[%d]", serviceDescVar, methodIndex)
+			methodIndex++
+		} else {
+			// Streaming RPC method
+			descExpr = fmt.Sprintf("&%s.Streams[%d]", serviceDescVar, streamIndex)
+			streamIndex++
+		}
+		g.generateClientMethod(servName, fullServName, serviceDescVar, method, descExpr)
+	}
+
+	g.P("// Server API for ", servName, " service")
+	g.P()
+
+	// Server interface.
+	serverType := servName + "Server"
+	g.P("type ", serverType, " interface {")
+	for i, method := range service.Method {
+		g.gen.PrintComments(fmt.Sprintf("%s,2,%d", path, i)) // 2 means method in a service.
+		g.P(g.generateServerSignature(servName, method))
+	}
+	g.P("}")
+	g.P()
+
+	// Server registration.
+	g.P("func Register", servName, "Server(s *", grpcPkg, ".Server, srv ", serverType, ") {")
+	g.P("s.RegisterService(&", serviceDescVar, `, srv)`)
+	g.P("}")
+	g.P()
+
+	// Server handler implementations.
+	var handlerNames []string
+	for _, method := range service.Method {
+		hname := g.generateServerMethod(servName, fullServName, method)
+		handlerNames = append(handlerNames, hname)
+	}
+
+	// Service descriptor.
+	g.P("var ", serviceDescVar, " = ", grpcPkg, ".ServiceDesc {")
+	g.P("ServiceName: ", strconv.Quote(fullServName), ",")
+	g.P("HandlerType: (*", serverType, ")(nil),")
+	g.P("Methods: []", grpcPkg, ".MethodDesc{")
+	for i, method := range service.Method {
+		if method.GetServerStreaming() || method.GetClientStreaming() {
+			continue
+		}
+		g.P("{")
+		g.P("MethodName: ", strconv.Quote(method.GetName()), ",")
+		g.P("Handler: ", handlerNames[i], ",")
+		g.P("},")
+	}
+	g.P("},")
+	g.P("Streams: []", grpcPkg, ".StreamDesc{")
+	for i, method := range service.Method {
+		if !method.GetServerStreaming() && !method.GetClientStreaming() {
+			continue
+		}
+		g.P("{")
+		g.P("StreamName: ", strconv.Quote(method.GetName()), ",")
+		g.P("Handler: ", handlerNames[i], ",")
+		if method.GetServerStreaming() {
+			g.P("ServerStreams: true,")
+		}
+		if method.GetClientStreaming() {
+			g.P("ClientStreams: true,")
+		}
+		g.P("},")
+	}
+	g.P("},")
+	g.P("Metadata: \"", file.GetName(), "\",")
+	g.P("}")
+	g.P()
+}
+
+// generateClientSignature returns the client-side signature for a method.
+func (g *grpc) generateClientSignature(servName string, method *pb.MethodDescriptorProto) string {
+	origMethName := method.GetName()
+	methName := generator.CamelCase(origMethName)
+	if reservedClientName[methName] {
+		methName += "_"
+	}
+	reqArg := ", in *" + g.typeName(method.GetInputType())
+	if method.GetClientStreaming() {
+		reqArg = ""
+	}
+	respName := "*" + g.typeName(method.GetOutputType())
+	if method.GetServerStreaming() || method.GetClientStreaming() {
+		respName = servName + "_" + generator.CamelCase(origMethName) + "Client"
+	}
+	return fmt.Sprintf("%s(ctx %s.Context%s, opts ...%s.CallOption) (%s, error)", methName, contextPkg, reqArg, grpcPkg, respName)
+}
+
+func (g *grpc) generateClientMethod(servName, fullServName, serviceDescVar string, method *pb.MethodDescriptorProto, descExpr string) {
+	sname := fmt.Sprintf("/%s/%s", fullServName, method.GetName())
+	methName := generator.CamelCase(method.GetName())
+	inType := g.typeName(method.GetInputType())
+	outType := g.typeName(method.GetOutputType())
+
+	g.P("func (c *", unexport(servName), "Client) ", g.generateClientSignature(servName, method), "{")
+	if !method.GetServerStreaming() && !method.GetClientStreaming() {
+		g.P("out := new(", outType, ")")
+		// TODO: Pass descExpr to Invoke.
+		g.P("err := ", grpcPkg, `.Invoke(ctx, "`, sname, `", in, out, c.cc, opts...)`)
+		g.P("if err != nil { return nil, err }")
+		g.P("return out, nil")
+		g.P("}")
+		g.P()
+		return
+	}
+	streamType := unexport(servName) + methName + "Client"
+	g.P("stream, err := ", grpcPkg, ".NewClientStream(ctx, ", descExpr, `, c.cc, "`, sname, `", opts...)`)
+	g.P("if err != nil { return nil, err }")
+	g.P("x := &", streamType, "{stream}")
+	if !method.GetClientStreaming() {
+		g.P("if err := x.ClientStream.SendMsg(in); err != nil { return nil, err }")
+		g.P("if err := x.ClientStream.CloseSend(); err != nil { return nil, err }")
+	}
+	g.P("return x, nil")
+	g.P("}")
+	g.P()
+
+	genSend := method.GetClientStreaming()
+	genRecv := method.GetServerStreaming()
+	genCloseAndRecv := !method.GetServerStreaming()
+
+	// Stream auxiliary types and methods.
+	g.P("type ", servName, "_", methName, "Client interface {")
+	if genSend {
+		g.P("Send(*", inType, ") error")
+	}
+	if genRecv {
+		g.P("Recv() (*", outType, ", error)")
+	}
+	if genCloseAndRecv {
+		g.P("CloseAndRecv() (*", outType, ", error)")
+	}
+	g.P(grpcPkg, ".ClientStream")
+	g.P("}")
+	g.P()
+
+	g.P("type ", streamType, " struct {")
+	g.P(grpcPkg, ".ClientStream")
+	g.P("}")
+	g.P()
+
+	if genSend {
+		g.P("func (x *", streamType, ") Send(m *", inType, ") error {")
+		g.P("return x.ClientStream.SendMsg(m)")
+		g.P("}")
+		g.P()
+	}
+	if genRecv {
+		g.P("func (x *", streamType, ") Recv() (*", outType, ", error) {")
+		g.P("m := new(", outType, ")")
+		g.P("if err := x.ClientStream.RecvMsg(m); err != nil { return nil, err }")
+		g.P("return m, nil")
+		g.P("}")
+		g.P()
+	}
+	if genCloseAndRecv {
+		g.P("func (x *", streamType, ") CloseAndRecv() (*", outType, ", error) {")
+		g.P("if err := x.ClientStream.CloseSend(); err != nil { return nil, err }")
+		g.P("m := new(", outType, ")")
+		g.P("if err := x.ClientStream.RecvMsg(m); err != nil { return nil, err }")
+		g.P("return m, nil")
+		g.P("}")
+		g.P()
+	}
+}
+
+// generateServerSignature returns the server-side signature for a method.
+func (g *grpc) generateServerSignature(servName string, method *pb.MethodDescriptorProto) string {
+	origMethName := method.GetName()
+	methName := generator.CamelCase(origMethName)
+	if reservedClientName[methName] {
+		methName += "_"
+	}
+
+	var reqArgs []string
+	ret := "error"
+	if !method.GetServerStreaming() && !method.GetClientStreaming() {
+		reqArgs = append(reqArgs, contextPkg+".Context")
+		ret = "(*" + g.typeName(method.GetOutputType()) + ", error)"
+	}
+	if !method.GetClientStreaming() {
+		reqArgs = append(reqArgs, "*"+g.typeName(method.GetInputType()))
+	}
+	if method.GetServerStreaming() || method.GetClientStreaming() {
+		reqArgs = append(reqArgs, servName+"_"+generator.CamelCase(origMethName)+"Server")
+	}
+
+	return methName + "(" + strings.Join(reqArgs, ", ") + ") " + ret
+}
+
+func (g *grpc) generateServerMethod(servName, fullServName string, method *pb.MethodDescriptorProto) string {
+	methName := generator.CamelCase(method.GetName())
+	hname := fmt.Sprintf("_%s_%s_Handler", servName, methName)
+	inType := g.typeName(method.GetInputType())
+	outType := g.typeName(method.GetOutputType())
+
+	if !method.GetServerStreaming() && !method.GetClientStreaming() {
+		g.P("func ", hname, "(srv interface{}, ctx ", contextPkg, ".Context, dec func(interface{}) error, interceptor ", grpcPkg, ".UnaryServerInterceptor) (interface{}, error) {")
+		g.P("in := new(", inType, ")")
+		g.P("if err := dec(in); err != nil { return nil, err }")
+		g.P("if interceptor == nil { return srv.(", servName, "Server).", methName, "(ctx, in) }")
+		g.P("info := &", grpcPkg, ".UnaryServerInfo{")
+		g.P("Server: srv,")
+		g.P("FullMethod: ", strconv.Quote(fmt.Sprintf("/%s/%s", fullServName, methName)), ",")
+		g.P("}")
+		g.P("handler := func(ctx ", contextPkg, ".Context, req interface{}) (interface{}, error) {")
+		g.P("return srv.(", servName, "Server).", methName, "(ctx, req.(*", inType, "))")
+		g.P("}")
+		g.P("return interceptor(ctx, in, info, handler)")
+		g.P("}")
+		g.P()
+		return hname
+	}
+	streamType := unexport(servName) + methName + "Server"
+	g.P("func ", hname, "(srv interface{}, stream ", grpcPkg, ".ServerStream) error {")
+	if !method.GetClientStreaming() {
+		g.P("m := new(", inType, ")")
+		g.P("if err := stream.RecvMsg(m); err != nil { return err }")
+		g.P("return srv.(", servName, "Server).", methName, "(m, &", streamType, "{stream})")
+	} else {
+		g.P("return srv.(", servName, "Server).", methName, "(&", streamType, "{stream})")
+	}
+	g.P("}")
+	g.P()
+
+	genSend := method.GetServerStreaming()
+	genSendAndClose := !method.GetServerStreaming()
+	genRecv := method.GetClientStreaming()
+
+	// Stream auxiliary types and methods.
+	g.P("type ", servName, "_", methName, "Server interface {")
+	if genSend {
+		g.P("Send(*", outType, ") error")
+	}
+	if genSendAndClose {
+		g.P("SendAndClose(*", outType, ") error")
+	}
+	if genRecv {
+		g.P("Recv() (*", inType, ", error)")
+	}
+	g.P(grpcPkg, ".ServerStream")
+	g.P("}")
+	g.P()
+
+	g.P("type ", streamType, " struct {")
+	g.P(grpcPkg, ".ServerStream")
+	g.P("}")
+	g.P()
+
+	if genSend {
+		g.P("func (x *", streamType, ") Send(m *", outType, ") error {")
+		g.P("return x.ServerStream.SendMsg(m)")
+		g.P("}")
+		g.P()
+	}
+	if genSendAndClose {
+		g.P("func (x *", streamType, ") SendAndClose(m *", outType, ") error {")
+		g.P("return x.ServerStream.SendMsg(m)")
+		g.P("}")
+		g.P()
+	}
+	if genRecv {
+		g.P("func (x *", streamType, ") Recv() (*", inType, ", error) {")
+		g.P("m := new(", inType, ")")
+		g.P("if err := x.ServerStream.RecvMsg(m); err != nil { return nil, err }")
+		g.P("return m, nil")
+		g.P("}")
+		g.P()
+	}
+
+	return hname
+}
diff --git a/vendor/github.com/golang/protobuf/protoc-gen-go/link_grpc.go b/vendor/github.com/golang/protobuf/protoc-gen-go/link_grpc.go
new file mode 100644
index 0000000..532a550
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/protoc-gen-go/link_grpc.go
@@ -0,0 +1,34 @@
+// Go support for Protocol Buffers - Google's data interchange format
+//
+// Copyright 2015 The Go Authors.  All rights reserved.
+// https://github.com/golang/protobuf
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+package main
+
+import _ "github.com/golang/protobuf/protoc-gen-go/grpc"
diff --git a/vendor/github.com/golang/protobuf/protoc-gen-go/main.go b/vendor/github.com/golang/protobuf/protoc-gen-go/main.go
new file mode 100644
index 0000000..8e2486d
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/protoc-gen-go/main.go
@@ -0,0 +1,98 @@
+// Go support for Protocol Buffers - Google's data interchange format
+//
+// Copyright 2010 The Go Authors.  All rights reserved.
+// https://github.com/golang/protobuf
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// protoc-gen-go is a plugin for the Google protocol buffer compiler to generate
+// Go code.  Run it by building this program and putting it in your path with
+// the name
+// 	protoc-gen-go
+// That word 'go' at the end becomes part of the option string set for the
+// protocol compiler, so once the protocol compiler (protoc) is installed
+// you can run
+// 	protoc --go_out=output_directory input_directory/file.proto
+// to generate Go bindings for the protocol defined by file.proto.
+// With that input, the output will be written to
+// 	output_directory/file.pb.go
+//
+// The generated code is documented in the package comment for
+// the library.
+//
+// See the README and documentation for protocol buffers to learn more:
+// 	https://developers.google.com/protocol-buffers/
+package main
+
+import (
+	"io/ioutil"
+	"os"
+
+	"github.com/golang/protobuf/proto"
+	"github.com/golang/protobuf/protoc-gen-go/generator"
+)
+
+func main() {
+	// Begin by allocating a generator. The request and response structures are stored there
+	// so we can do error handling easily - the response structure contains the field to
+	// report failure.
+	g := generator.New()
+
+	data, err := ioutil.ReadAll(os.Stdin)
+	if err != nil {
+		g.Error(err, "reading input")
+	}
+
+	if err := proto.Unmarshal(data, g.Request); err != nil {
+		g.Error(err, "parsing input proto")
+	}
+
+	if len(g.Request.FileToGenerate) == 0 {
+		g.Fail("no files to generate")
+	}
+
+	g.CommandLineParameters(g.Request.GetParameter())
+
+	// Create a wrapped version of the Descriptors and EnumDescriptors that
+	// point to the file that defines them.
+	g.WrapTypes()
+
+	g.SetPackageNames()
+	g.BuildTypeNameMap()
+
+	g.GenerateAllFiles()
+
+	// Send back the results.
+	data, err = proto.Marshal(g.Response)
+	if err != nil {
+		g.Error(err, "failed to marshal output proto")
+	}
+	_, err = os.Stdout.Write(data)
+	if err != nil {
+		g.Error(err, "failed to write output proto")
+	}
+}
diff --git a/vendor/github.com/golang/protobuf/protoc-gen-go/plugin/plugin.pb.go b/vendor/github.com/golang/protobuf/protoc-gen-go/plugin/plugin.pb.go
new file mode 100644
index 0000000..c608a24
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/protoc-gen-go/plugin/plugin.pb.go
@@ -0,0 +1,293 @@
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// source: google/protobuf/compiler/plugin.proto
+
+/*
+Package plugin_go is a generated protocol buffer package.
+
+It is generated from these files:
+	google/protobuf/compiler/plugin.proto
+
+It has these top-level messages:
+	Version
+	CodeGeneratorRequest
+	CodeGeneratorResponse
+*/
+package plugin_go
+
+import proto "github.com/golang/protobuf/proto"
+import fmt "fmt"
+import math "math"
+import google_protobuf "github.com/golang/protobuf/protoc-gen-go/descriptor"
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ = proto.Marshal
+var _ = fmt.Errorf
+var _ = math.Inf
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the proto package it is being compiled against.
+// A compilation error at this line likely means your copy of the
+// proto package needs to be updated.
+const _ = proto.ProtoPackageIsVersion2 // please upgrade the proto package
+
+// The version number of protocol compiler.
+type Version struct {
+	Major *int32 `protobuf:"varint,1,opt,name=major" json:"major,omitempty"`
+	Minor *int32 `protobuf:"varint,2,opt,name=minor" json:"minor,omitempty"`
+	Patch *int32 `protobuf:"varint,3,opt,name=patch" json:"patch,omitempty"`
+	// A suffix for alpha, beta or rc release, e.g., "alpha-1", "rc2". It should
+	// be empty for mainline stable releases.
+	Suffix           *string `protobuf:"bytes,4,opt,name=suffix" json:"suffix,omitempty"`
+	XXX_unrecognized []byte  `json:"-"`
+}
+
+func (m *Version) Reset()                    { *m = Version{} }
+func (m *Version) String() string            { return proto.CompactTextString(m) }
+func (*Version) ProtoMessage()               {}
+func (*Version) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{0} }
+
+func (m *Version) GetMajor() int32 {
+	if m != nil && m.Major != nil {
+		return *m.Major
+	}
+	return 0
+}
+
+func (m *Version) GetMinor() int32 {
+	if m != nil && m.Minor != nil {
+		return *m.Minor
+	}
+	return 0
+}
+
+func (m *Version) GetPatch() int32 {
+	if m != nil && m.Patch != nil {
+		return *m.Patch
+	}
+	return 0
+}
+
+func (m *Version) GetSuffix() string {
+	if m != nil && m.Suffix != nil {
+		return *m.Suffix
+	}
+	return ""
+}
+
+// An encoded CodeGeneratorRequest is written to the plugin's stdin.
+type CodeGeneratorRequest struct {
+	// The .proto files that were explicitly listed on the command-line.  The
+	// code generator should generate code only for these files.  Each file's
+	// descriptor will be included in proto_file, below.
+	FileToGenerate []string `protobuf:"bytes,1,rep,name=file_to_generate,json=fileToGenerate" json:"file_to_generate,omitempty"`
+	// The generator parameter passed on the command-line.
+	Parameter *string `protobuf:"bytes,2,opt,name=parameter" json:"parameter,omitempty"`
+	// FileDescriptorProtos for all files in files_to_generate and everything
+	// they import.  The files will appear in topological order, so each file
+	// appears before any file that imports it.
+	//
+	// protoc guarantees that all proto_files will be written after
+	// the fields above, even though this is not technically guaranteed by the
+	// protobuf wire format.  This theoretically could allow a plugin to stream
+	// in the FileDescriptorProtos and handle them one by one rather than read
+	// the entire set into memory at once.  However, as of this writing, this
+	// is not similarly optimized on protoc's end -- it will store all fields in
+	// memory at once before sending them to the plugin.
+	//
+	// Type names of fields and extensions in the FileDescriptorProto are always
+	// fully qualified.
+	ProtoFile []*google_protobuf.FileDescriptorProto `protobuf:"bytes,15,rep,name=proto_file,json=protoFile" json:"proto_file,omitempty"`
+	// The version number of protocol compiler.
+	CompilerVersion  *Version `protobuf:"bytes,3,opt,name=compiler_version,json=compilerVersion" json:"compiler_version,omitempty"`
+	XXX_unrecognized []byte   `json:"-"`
+}
+
+func (m *CodeGeneratorRequest) Reset()                    { *m = CodeGeneratorRequest{} }
+func (m *CodeGeneratorRequest) String() string            { return proto.CompactTextString(m) }
+func (*CodeGeneratorRequest) ProtoMessage()               {}
+func (*CodeGeneratorRequest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{1} }
+
+func (m *CodeGeneratorRequest) GetFileToGenerate() []string {
+	if m != nil {
+		return m.FileToGenerate
+	}
+	return nil
+}
+
+func (m *CodeGeneratorRequest) GetParameter() string {
+	if m != nil && m.Parameter != nil {
+		return *m.Parameter
+	}
+	return ""
+}
+
+func (m *CodeGeneratorRequest) GetProtoFile() []*google_protobuf.FileDescriptorProto {
+	if m != nil {
+		return m.ProtoFile
+	}
+	return nil
+}
+
+func (m *CodeGeneratorRequest) GetCompilerVersion() *Version {
+	if m != nil {
+		return m.CompilerVersion
+	}
+	return nil
+}
+
+// The plugin writes an encoded CodeGeneratorResponse to stdout.
+type CodeGeneratorResponse struct {
+	// Error message.  If non-empty, code generation failed.  The plugin process
+	// should exit with status code zero even if it reports an error in this way.
+	//
+	// This should be used to indicate errors in .proto files which prevent the
+	// code generator from generating correct code.  Errors which indicate a
+	// problem in protoc itself -- such as the input CodeGeneratorRequest being
+	// unparseable -- should be reported by writing a message to stderr and
+	// exiting with a non-zero status code.
+	Error            *string                       `protobuf:"bytes,1,opt,name=error" json:"error,omitempty"`
+	File             []*CodeGeneratorResponse_File `protobuf:"bytes,15,rep,name=file" json:"file,omitempty"`
+	XXX_unrecognized []byte                        `json:"-"`
+}
+
+func (m *CodeGeneratorResponse) Reset()                    { *m = CodeGeneratorResponse{} }
+func (m *CodeGeneratorResponse) String() string            { return proto.CompactTextString(m) }
+func (*CodeGeneratorResponse) ProtoMessage()               {}
+func (*CodeGeneratorResponse) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{2} }
+
+func (m *CodeGeneratorResponse) GetError() string {
+	if m != nil && m.Error != nil {
+		return *m.Error
+	}
+	return ""
+}
+
+func (m *CodeGeneratorResponse) GetFile() []*CodeGeneratorResponse_File {
+	if m != nil {
+		return m.File
+	}
+	return nil
+}
+
+// Represents a single generated file.
+type CodeGeneratorResponse_File struct {
+	// The file name, relative to the output directory.  The name must not
+	// contain "." or ".." components and must be relative, not be absolute (so,
+	// the file cannot lie outside the output directory).  "/" must be used as
+	// the path separator, not "\".
+	//
+	// If the name is omitted, the content will be appended to the previous
+	// file.  This allows the generator to break large files into small chunks,
+	// and allows the generated text to be streamed back to protoc so that large
+	// files need not reside completely in memory at one time.  Note that as of
+	// this writing protoc does not optimize for this -- it will read the entire
+	// CodeGeneratorResponse before writing files to disk.
+	Name *string `protobuf:"bytes,1,opt,name=name" json:"name,omitempty"`
+	// If non-empty, indicates that the named file should already exist, and the
+	// content here is to be inserted into that file at a defined insertion
+	// point.  This feature allows a code generator to extend the output
+	// produced by another code generator.  The original generator may provide
+	// insertion points by placing special annotations in the file that look
+	// like:
+	//   @@protoc_insertion_point(NAME)
+	// The annotation can have arbitrary text before and after it on the line,
+	// which allows it to be placed in a comment.  NAME should be replaced with
+	// an identifier naming the point -- this is what other generators will use
+	// as the insertion_point.  Code inserted at this point will be placed
+	// immediately above the line containing the insertion point (thus multiple
+	// insertions to the same point will come out in the order they were added).
+	// The double-@ is intended to make it unlikely that the generated code
+	// could contain things that look like insertion points by accident.
+	//
+	// For example, the C++ code generator places the following line in the
+	// .pb.h files that it generates:
+	//   // @@protoc_insertion_point(namespace_scope)
+	// This line appears within the scope of the file's package namespace, but
+	// outside of any particular class.  Another plugin can then specify the
+	// insertion_point "namespace_scope" to generate additional classes or
+	// other declarations that should be placed in this scope.
+	//
+	// Note that if the line containing the insertion point begins with
+	// whitespace, the same whitespace will be added to every line of the
+	// inserted text.  This is useful for languages like Python, where
+	// indentation matters.  In these languages, the insertion point comment
+	// should be indented the same amount as any inserted code will need to be
+	// in order to work correctly in that context.
+	//
+	// The code generator that generates the initial file and the one which
+	// inserts into it must both run as part of a single invocation of protoc.
+	// Code generators are executed in the order in which they appear on the
+	// command line.
+	//
+	// If |insertion_point| is present, |name| must also be present.
+	InsertionPoint *string `protobuf:"bytes,2,opt,name=insertion_point,json=insertionPoint" json:"insertion_point,omitempty"`
+	// The file contents.
+	Content          *string `protobuf:"bytes,15,opt,name=content" json:"content,omitempty"`
+	XXX_unrecognized []byte  `json:"-"`
+}
+
+func (m *CodeGeneratorResponse_File) Reset()                    { *m = CodeGeneratorResponse_File{} }
+func (m *CodeGeneratorResponse_File) String() string            { return proto.CompactTextString(m) }
+func (*CodeGeneratorResponse_File) ProtoMessage()               {}
+func (*CodeGeneratorResponse_File) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{2, 0} }
+
+func (m *CodeGeneratorResponse_File) GetName() string {
+	if m != nil && m.Name != nil {
+		return *m.Name
+	}
+	return ""
+}
+
+func (m *CodeGeneratorResponse_File) GetInsertionPoint() string {
+	if m != nil && m.InsertionPoint != nil {
+		return *m.InsertionPoint
+	}
+	return ""
+}
+
+func (m *CodeGeneratorResponse_File) GetContent() string {
+	if m != nil && m.Content != nil {
+		return *m.Content
+	}
+	return ""
+}
+
+func init() {
+	proto.RegisterType((*Version)(nil), "google.protobuf.compiler.Version")
+	proto.RegisterType((*CodeGeneratorRequest)(nil), "google.protobuf.compiler.CodeGeneratorRequest")
+	proto.RegisterType((*CodeGeneratorResponse)(nil), "google.protobuf.compiler.CodeGeneratorResponse")
+	proto.RegisterType((*CodeGeneratorResponse_File)(nil), "google.protobuf.compiler.CodeGeneratorResponse.File")
+}
+
+func init() { proto.RegisterFile("google/protobuf/compiler/plugin.proto", fileDescriptor0) }
+
+var fileDescriptor0 = []byte{
+	// 417 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x74, 0x92, 0xcf, 0x6a, 0x14, 0x41,
+	0x10, 0xc6, 0x19, 0x77, 0x63, 0x98, 0x8a, 0x64, 0x43, 0x13, 0xa5, 0x09, 0x39, 0x8c, 0x8b, 0xe2,
+	0x5c, 0x32, 0x0b, 0xc1, 0x8b, 0x78, 0x4b, 0x44, 0x3d, 0x78, 0x58, 0x1a, 0xf1, 0x20, 0xc8, 0x30,
+	0x99, 0xd4, 0x74, 0x5a, 0x66, 0xba, 0xc6, 0xee, 0x1e, 0xf1, 0x49, 0x7d, 0x0f, 0xdf, 0x40, 0xfa,
+	0xcf, 0x24, 0xb2, 0xb8, 0xa7, 0xee, 0xef, 0x57, 0xd5, 0xd5, 0x55, 0x1f, 0x05, 0x2f, 0x25, 0x91,
+	0xec, 0x71, 0x33, 0x1a, 0x72, 0x74, 0x33, 0x75, 0x9b, 0x96, 0x86, 0x51, 0xf5, 0x68, 0x36, 0x63,
+	0x3f, 0x49, 0xa5, 0xab, 0x10, 0x60, 0x3c, 0xa6, 0x55, 0x73, 0x5a, 0x35, 0xa7, 0x9d, 0x15, 0xbb,
+	0x05, 0x6e, 0xd1, 0xb6, 0x46, 0x8d, 0x8e, 0x4c, 0xcc, 0x5e, 0xb7, 0x70, 0xf8, 0x05, 0x8d, 0x55,
+	0xa4, 0xd9, 0x29, 0x1c, 0x0c, 0xcd, 0x77, 0x32, 0x3c, 0x2b, 0xb2, 0xf2, 0x40, 0x44, 0x11, 0xa8,
+	0xd2, 0x64, 0xf8, 0xa3, 0x44, 0xbd, 0xf0, 0x74, 0x6c, 0x5c, 0x7b, 0xc7, 0x17, 0x91, 0x06, 0xc1,
+	0x9e, 0xc1, 0x63, 0x3b, 0x75, 0x9d, 0xfa, 0xc5, 0x97, 0x45, 0x56, 0xe6, 0x22, 0xa9, 0xf5, 0x9f,
+	0x0c, 0x4e, 0xaf, 0xe9, 0x16, 0x3f, 0xa0, 0x46, 0xd3, 0x38, 0x32, 0x02, 0x7f, 0x4c, 0x68, 0x1d,
+	0x2b, 0xe1, 0xa4, 0x53, 0x3d, 0xd6, 0x8e, 0x6a, 0x19, 0x63, 0xc8, 0xb3, 0x62, 0x51, 0xe6, 0xe2,
+	0xd8, 0xf3, 0xcf, 0x94, 0x5e, 0x20, 0x3b, 0x87, 0x7c, 0x6c, 0x4c, 0x33, 0xa0, 0xc3, 0xd8, 0x4a,
+	0x2e, 0x1e, 0x00, 0xbb, 0x06, 0x08, 0xe3, 0xd4, 0xfe, 0x15, 0x5f, 0x15, 0x8b, 0xf2, 0xe8, 0xf2,
+	0x45, 0xb5, 0x6b, 0xcb, 0x7b, 0xd5, 0xe3, 0xbb, 0x7b, 0x03, 0xb6, 0x1e, 0x8b, 0x3c, 0x44, 0x7d,
+	0x84, 0x7d, 0x82, 0x93, 0xd9, 0xb8, 0xfa, 0x67, 0xf4, 0x24, 0x8c, 0x77, 0x74, 0xf9, 0xbc, 0xda,
+	0xe7, 0x70, 0x95, 0xcc, 0x13, 0xab, 0x99, 0x24, 0xb0, 0xfe, 0x9d, 0xc1, 0xd3, 0x9d, 0x99, 0xed,
+	0x48, 0xda, 0xa2, 0xf7, 0x0e, 0x8d, 0x49, 0x3e, 0xe7, 0x22, 0x0a, 0xf6, 0x11, 0x96, 0xff, 0x34,
+	0xff, 0x7a, 0xff, 0x8f, 0xff, 0x2d, 0x1a, 0x66, 0x13, 0xa1, 0xc2, 0xd9, 0x37, 0x58, 0x86, 0x79,
+	0x18, 0x2c, 0x75, 0x33, 0x60, 0xfa, 0x26, 0xdc, 0xd9, 0x2b, 0x58, 0x29, 0x6d, 0xd1, 0x38, 0x45,
+	0xba, 0x1e, 0x49, 0x69, 0x97, 0xcc, 0x3c, 0xbe, 0xc7, 0x5b, 0x4f, 0x19, 0x87, 0xc3, 0x96, 0xb4,
+	0x43, 0xed, 0xf8, 0x2a, 0x24, 0xcc, 0xf2, 0x4a, 0xc2, 0x79, 0x4b, 0xc3, 0xde, 0xfe, 0xae, 0x9e,
+	0x6c, 0xc3, 0x6e, 0x06, 0x7b, 0xed, 0xd7, 0x37, 0x52, 0xb9, 0xbb, 0xe9, 0xc6, 0x87, 0x37, 0x92,
+	0xfa, 0x46, 0xcb, 0x87, 0x65, 0x0c, 0x97, 0xf6, 0x42, 0xa2, 0xbe, 0x90, 0x94, 0x56, 0xfa, 0x6d,
+	0x3c, 0x6a, 0x49, 0x7f, 0x03, 0x00, 0x00, 0xff, 0xff, 0xf7, 0x15, 0x40, 0xc5, 0xfe, 0x02, 0x00,
+	0x00,
+}
diff --git a/vendor/github.com/kisielk/gotool/LEGAL b/vendor/github.com/kisielk/gotool/LEGAL
new file mode 100644
index 0000000..72b859c
--- /dev/null
+++ b/vendor/github.com/kisielk/gotool/LEGAL
@@ -0,0 +1,32 @@
+All the files in this distribution are covered under either the MIT
+license (see the file LICENSE) except some files mentioned below.
+
+match.go, match_test.go:
+
+    Copyright (c) 2009 The Go Authors. All rights reserved.
+
+    Redistribution and use in source and binary forms, with or without
+    modification, are permitted provided that the following conditions are
+    met:
+
+       * Redistributions of source code must retain the above copyright
+    notice, this list of conditions and the following disclaimer.
+       * Redistributions in binary form must reproduce the above
+    copyright notice, this list of conditions and the following disclaimer
+    in the documentation and/or other materials provided with the
+    distribution.
+       * Neither the name of Google Inc. nor the names of its
+    contributors may be used to endorse or promote products derived from
+    this software without specific prior written permission.
+
+    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+    "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+    LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+    A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+    OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+    SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+    LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+    DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+    THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+    (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+    OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/vendor/github.com/kisielk/gotool/LICENSE b/vendor/github.com/kisielk/gotool/LICENSE
new file mode 100644
index 0000000..1cbf651
--- /dev/null
+++ b/vendor/github.com/kisielk/gotool/LICENSE
@@ -0,0 +1,20 @@
+Copyright (c) 2013 Kamil Kisiel <kamil@kamilkisiel.net>
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/vendor/github.com/kisielk/gotool/go13.go b/vendor/github.com/kisielk/gotool/go13.go
new file mode 100644
index 0000000..2dd9b3f
--- /dev/null
+++ b/vendor/github.com/kisielk/gotool/go13.go
@@ -0,0 +1,15 @@
+// +build !go1.4
+
+package gotool
+
+import (
+	"go/build"
+	"path/filepath"
+	"runtime"
+)
+
+var gorootSrc = filepath.Join(runtime.GOROOT(), "src", "pkg")
+
+func shouldIgnoreImport(p *build.Package) bool {
+	return true
+}
diff --git a/vendor/github.com/kisielk/gotool/go14-15.go b/vendor/github.com/kisielk/gotool/go14-15.go
new file mode 100644
index 0000000..aa99a32
--- /dev/null
+++ b/vendor/github.com/kisielk/gotool/go14-15.go
@@ -0,0 +1,15 @@
+// +build go1.4,!go1.6
+
+package gotool
+
+import (
+	"go/build"
+	"path/filepath"
+	"runtime"
+)
+
+var gorootSrc = filepath.Join(runtime.GOROOT(), "src")
+
+func shouldIgnoreImport(p *build.Package) bool {
+	return true
+}
diff --git a/vendor/github.com/kisielk/gotool/go16-18.go b/vendor/github.com/kisielk/gotool/go16-18.go
new file mode 100644
index 0000000..f25cec1
--- /dev/null
+++ b/vendor/github.com/kisielk/gotool/go16-18.go
@@ -0,0 +1,15 @@
+// +build go1.6,!go1.9
+
+package gotool
+
+import (
+	"go/build"
+	"path/filepath"
+	"runtime"
+)
+
+var gorootSrc = filepath.Join(runtime.GOROOT(), "src")
+
+func shouldIgnoreImport(p *build.Package) bool {
+	return p == nil || len(p.InvalidGoFiles) == 0
+}
diff --git a/vendor/github.com/kisielk/gotool/internal/load/path.go b/vendor/github.com/kisielk/gotool/internal/load/path.go
new file mode 100644
index 0000000..74e15b9
--- /dev/null
+++ b/vendor/github.com/kisielk/gotool/internal/load/path.go
@@ -0,0 +1,27 @@
+// Copyright 2017 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 go1.9
+
+package load
+
+import (
+	"strings"
+)
+
+// hasPathPrefix reports whether the path s begins with the
+// elements in prefix.
+func hasPathPrefix(s, prefix string) bool {
+	switch {
+	default:
+		return false
+	case len(s) == len(prefix):
+		return s == prefix
+	case len(s) > len(prefix):
+		if prefix != "" && prefix[len(prefix)-1] == '/' {
+			return strings.HasPrefix(s, prefix)
+		}
+		return s[len(prefix)] == '/' && s[:len(prefix)] == prefix
+	}
+}
diff --git a/vendor/github.com/kisielk/gotool/internal/load/pkg.go b/vendor/github.com/kisielk/gotool/internal/load/pkg.go
new file mode 100644
index 0000000..b937ede
--- /dev/null
+++ b/vendor/github.com/kisielk/gotool/internal/load/pkg.go
@@ -0,0 +1,25 @@
+// 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.
+
+// +build go1.9
+
+// Package load loads packages.
+package load
+
+import (
+	"strings"
+)
+
+// isStandardImportPath reports whether $GOROOT/src/path should be considered
+// part of the standard distribution. For historical reasons we allow people to add
+// their own code to $GOROOT instead of using $GOPATH, but we assume that
+// code will start with a domain name (dot in the first element).
+func isStandardImportPath(path string) bool {
+	i := strings.Index(path, "/")
+	if i < 0 {
+		i = len(path)
+	}
+	elem := path[:i]
+	return !strings.Contains(elem, ".")
+}
diff --git a/vendor/github.com/kisielk/gotool/internal/load/search.go b/vendor/github.com/kisielk/gotool/internal/load/search.go
new file mode 100644
index 0000000..17ed62d
--- /dev/null
+++ b/vendor/github.com/kisielk/gotool/internal/load/search.go
@@ -0,0 +1,354 @@
+// Copyright 2017 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 go1.9
+
+package load
+
+import (
+	"fmt"
+	"go/build"
+	"log"
+	"os"
+	"path"
+	"path/filepath"
+	"regexp"
+	"strings"
+)
+
+// Context specifies values for operation of ImportPaths that would
+// otherwise come from cmd/go/internal/cfg package.
+//
+// This is a construct added for gotool purposes and doesn't have
+// an equivalent upstream in cmd/go.
+type Context struct {
+	// BuildContext is the build context to use.
+	BuildContext build.Context
+
+	// GOROOTsrc is the location of the src directory in GOROOT.
+	// At this time, it's used only in MatchPackages to skip
+	// GOOROOT/src entry from BuildContext.SrcDirs output.
+	GOROOTsrc string
+}
+
+// allPackages returns all the packages that can be found
+// under the $GOPATH directories and $GOROOT matching pattern.
+// The pattern is either "all" (all packages), "std" (standard packages),
+// "cmd" (standard commands), or a path including "...".
+func (c *Context) allPackages(pattern string) []string {
+	pkgs := c.MatchPackages(pattern)
+	if len(pkgs) == 0 {
+		fmt.Fprintf(os.Stderr, "warning: %q matched no packages\n", pattern)
+	}
+	return pkgs
+}
+
+// allPackagesInFS is like allPackages but is passed a pattern
+// beginning ./ or ../, meaning it should scan the tree rooted
+// at the given directory. There are ... in the pattern too.
+func (c *Context) allPackagesInFS(pattern string) []string {
+	pkgs := c.MatchPackagesInFS(pattern)
+	if len(pkgs) == 0 {
+		fmt.Fprintf(os.Stderr, "warning: %q matched no packages\n", pattern)
+	}
+	return pkgs
+}
+
+// MatchPackages returns a list of package paths matching pattern
+// (see go help packages for pattern syntax).
+func (c *Context) MatchPackages(pattern string) []string {
+	match := func(string) bool { return true }
+	treeCanMatch := func(string) bool { return true }
+	if !IsMetaPackage(pattern) {
+		match = matchPattern(pattern)
+		treeCanMatch = treeCanMatchPattern(pattern)
+	}
+
+	have := map[string]bool{
+		"builtin": true, // ignore pseudo-package that exists only for documentation
+	}
+	if !c.BuildContext.CgoEnabled {
+		have["runtime/cgo"] = true // ignore during walk
+	}
+	var pkgs []string
+
+	for _, src := range c.BuildContext.SrcDirs() {
+		if (pattern == "std" || pattern == "cmd") && src != c.GOROOTsrc {
+			continue
+		}
+		src = filepath.Clean(src) + string(filepath.Separator)
+		root := src
+		if pattern == "cmd" {
+			root += "cmd" + string(filepath.Separator)
+		}
+		filepath.Walk(root, func(path string, fi os.FileInfo, err error) error {
+			if err != nil || path == src {
+				return nil
+			}
+
+			want := true
+			// Avoid .foo, _foo, and testdata directory trees.
+			_, elem := filepath.Split(path)
+			if strings.HasPrefix(elem, ".") || strings.HasPrefix(elem, "_") || elem == "testdata" {
+				want = false
+			}
+
+			name := filepath.ToSlash(path[len(src):])
+			if pattern == "std" && (!isStandardImportPath(name) || name == "cmd") {
+				// The name "std" is only the standard library.
+				// If the name is cmd, it's the root of the command tree.
+				want = false
+			}
+			if !treeCanMatch(name) {
+				want = false
+			}
+
+			if !fi.IsDir() {
+				if fi.Mode()&os.ModeSymlink != 0 && want {
+					if target, err := os.Stat(path); err == nil && target.IsDir() {
+						fmt.Fprintf(os.Stderr, "warning: ignoring symlink %s\n", path)
+					}
+				}
+				return nil
+			}
+			if !want {
+				return filepath.SkipDir
+			}
+
+			if have[name] {
+				return nil
+			}
+			have[name] = true
+			if !match(name) {
+				return nil
+			}
+			pkg, err := c.BuildContext.ImportDir(path, 0)
+			if err != nil {
+				if _, noGo := err.(*build.NoGoError); noGo {
+					return nil
+				}
+			}
+
+			// If we are expanding "cmd", skip main
+			// packages under cmd/vendor. At least as of
+			// March, 2017, there is one there for the
+			// vendored pprof tool.
+			if pattern == "cmd" && strings.HasPrefix(pkg.ImportPath, "cmd/vendor") && pkg.Name == "main" {
+				return nil
+			}
+
+			pkgs = append(pkgs, name)
+			return nil
+		})
+	}
+	return pkgs
+}
+
+// MatchPackagesInFS returns a list of package paths matching pattern,
+// which must begin with ./ or ../
+// (see go help packages for pattern syntax).
+func (c *Context) MatchPackagesInFS(pattern string) []string {
+	// Find directory to begin the scan.
+	// Could be smarter but this one optimization
+	// is enough for now, since ... is usually at the
+	// end of a path.
+	i := strings.Index(pattern, "...")
+	dir, _ := path.Split(pattern[:i])
+
+	// pattern begins with ./ or ../.
+	// path.Clean will discard the ./ but not the ../.
+	// We need to preserve the ./ for pattern matching
+	// and in the returned import paths.
+	prefix := ""
+	if strings.HasPrefix(pattern, "./") {
+		prefix = "./"
+	}
+	match := matchPattern(pattern)
+
+	var pkgs []string
+	filepath.Walk(dir, func(path string, fi os.FileInfo, err error) error {
+		if err != nil || !fi.IsDir() {
+			return nil
+		}
+		if path == dir {
+			// filepath.Walk starts at dir and recurses. For the recursive case,
+			// the path is the result of filepath.Join, which calls filepath.Clean.
+			// The initial case is not Cleaned, though, so we do this explicitly.
+			//
+			// This converts a path like "./io/" to "io". Without this step, running
+			// "cd $GOROOT/src; go list ./io/..." would incorrectly skip the io
+			// package, because prepending the prefix "./" to the unclean path would
+			// result in "././io", and match("././io") returns false.
+			path = filepath.Clean(path)
+		}
+
+		// Avoid .foo, _foo, and testdata directory trees, but do not avoid "." or "..".
+		_, elem := filepath.Split(path)
+		dot := strings.HasPrefix(elem, ".") && elem != "." && elem != ".."
+		if dot || strings.HasPrefix(elem, "_") || elem == "testdata" {
+			return filepath.SkipDir
+		}
+
+		name := prefix + filepath.ToSlash(path)
+		if !match(name) {
+			return nil
+		}
+
+		// We keep the directory if we can import it, or if we can't import it
+		// due to invalid Go source files. This means that directories containing
+		// parse errors will be built (and fail) instead of being silently skipped
+		// as not matching the pattern. Go 1.5 and earlier skipped, but that
+		// behavior means people miss serious mistakes.
+		// See golang.org/issue/11407.
+		if p, err := c.BuildContext.ImportDir(path, 0); err != nil && (p == nil || len(p.InvalidGoFiles) == 0) {
+			if _, noGo := err.(*build.NoGoError); !noGo {
+				log.Print(err)
+			}
+			return nil
+		}
+		pkgs = append(pkgs, name)
+		return nil
+	})
+	return pkgs
+}
+
+// treeCanMatchPattern(pattern)(name) reports whether
+// name or children of name can possibly match pattern.
+// Pattern is the same limited glob accepted by matchPattern.
+func treeCanMatchPattern(pattern string) func(name string) bool {
+	wildCard := false
+	if i := strings.Index(pattern, "..."); i >= 0 {
+		wildCard = true
+		pattern = pattern[:i]
+	}
+	return func(name string) bool {
+		return len(name) <= len(pattern) && hasPathPrefix(pattern, name) ||
+			wildCard && strings.HasPrefix(name, pattern)
+	}
+}
+
+// matchPattern(pattern)(name) reports whether
+// name matches pattern. Pattern is a limited glob
+// pattern in which '...' means 'any string' and there
+// is no other special syntax.
+// Unfortunately, there are two special cases. Quoting "go help packages":
+//
+// First, /... at the end of the pattern can match an empty string,
+// so that net/... matches both net and packages in its subdirectories, like net/http.
+// Second, any slash-separted pattern element containing a wildcard never
+// participates in a match of the "vendor" element in the path of a vendored
+// package, so that ./... does not match packages in subdirectories of
+// ./vendor or ./mycode/vendor, but ./vendor/... and ./mycode/vendor/... do.
+// Note, however, that a directory named vendor that itself contains code
+// is not a vendored package: cmd/vendor would be a command named vendor,
+// and the pattern cmd/... matches it.
+func matchPattern(pattern string) func(name string) bool {
+	// Convert pattern to regular expression.
+	// The strategy for the trailing /... is to nest it in an explicit ? expression.
+	// The strategy for the vendor exclusion is to change the unmatchable
+	// vendor strings to a disallowed code point (vendorChar) and to use
+	// "(anything but that codepoint)*" as the implementation of the ... wildcard.
+	// This is a bit complicated but the obvious alternative,
+	// namely a hand-written search like in most shell glob matchers,
+	// is too easy to make accidentally exponential.
+	// Using package regexp guarantees linear-time matching.
+
+	const vendorChar = "\x00"
+
+	if strings.Contains(pattern, vendorChar) {
+		return func(name string) bool { return false }
+	}
+
+	re := regexp.QuoteMeta(pattern)
+	re = replaceVendor(re, vendorChar)
+	switch {
+	case strings.HasSuffix(re, `/`+vendorChar+`/\.\.\.`):
+		re = strings.TrimSuffix(re, `/`+vendorChar+`/\.\.\.`) + `(/vendor|/` + vendorChar + `/\.\.\.)`
+	case re == vendorChar+`/\.\.\.`:
+		re = `(/vendor|/` + vendorChar + `/\.\.\.)`
+	case strings.HasSuffix(re, `/\.\.\.`):
+		re = strings.TrimSuffix(re, `/\.\.\.`) + `(/\.\.\.)?`
+	}
+	re = strings.Replace(re, `\.\.\.`, `[^`+vendorChar+`]*`, -1)
+
+	reg := regexp.MustCompile(`^` + re + `$`)
+
+	return func(name string) bool {
+		if strings.Contains(name, vendorChar) {
+			return false
+		}
+		return reg.MatchString(replaceVendor(name, vendorChar))
+	}
+}
+
+// replaceVendor returns the result of replacing
+// non-trailing vendor path elements in x with repl.
+func replaceVendor(x, repl string) string {
+	if !strings.Contains(x, "vendor") {
+		return x
+	}
+	elem := strings.Split(x, "/")
+	for i := 0; i < len(elem)-1; i++ {
+		if elem[i] == "vendor" {
+			elem[i] = repl
+		}
+	}
+	return strings.Join(elem, "/")
+}
+
+// ImportPaths returns the import paths to use for the given command line.
+func (c *Context) ImportPaths(args []string) []string {
+	args = c.ImportPathsNoDotExpansion(args)
+	var out []string
+	for _, a := range args {
+		if strings.Contains(a, "...") {
+			if build.IsLocalImport(a) {
+				out = append(out, c.allPackagesInFS(a)...)
+			} else {
+				out = append(out, c.allPackages(a)...)
+			}
+			continue
+		}
+		out = append(out, a)
+	}
+	return out
+}
+
+// ImportPathsNoDotExpansion returns the import paths to use for the given
+// command line, but it does no ... expansion.
+func (c *Context) ImportPathsNoDotExpansion(args []string) []string {
+	if len(args) == 0 {
+		return []string{"."}
+	}
+	var out []string
+	for _, a := range args {
+		// Arguments are supposed to be import paths, but
+		// as a courtesy to Windows developers, rewrite \ to /
+		// in command-line arguments. Handles .\... and so on.
+		if filepath.Separator == '\\' {
+			a = strings.Replace(a, `\`, `/`, -1)
+		}
+
+		// Put argument in canonical form, but preserve leading ./.
+		if strings.HasPrefix(a, "./") {
+			a = "./" + path.Clean(a)
+			if a == "./." {
+				a = "."
+			}
+		} else {
+			a = path.Clean(a)
+		}
+		if IsMetaPackage(a) {
+			out = append(out, c.allPackages(a)...)
+			continue
+		}
+		out = append(out, a)
+	}
+	return out
+}
+
+// IsMetaPackage checks if name is a reserved package name that expands to multiple packages.
+func IsMetaPackage(name string) bool {
+	return name == "std" || name == "cmd" || name == "all"
+}
diff --git a/vendor/github.com/kisielk/gotool/match.go b/vendor/github.com/kisielk/gotool/match.go
new file mode 100644
index 0000000..4dbdbff
--- /dev/null
+++ b/vendor/github.com/kisielk/gotool/match.go
@@ -0,0 +1,56 @@
+// Copyright (c) 2009 The Go Authors. All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//    * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//    * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//    * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// +build go1.9
+
+package gotool
+
+import (
+	"path/filepath"
+
+	"github.com/kisielk/gotool/internal/load"
+)
+
+// importPaths returns the import paths to use for the given command line.
+func (c *Context) importPaths(args []string) []string {
+	lctx := load.Context{
+		BuildContext: c.BuildContext,
+		GOROOTsrc:    c.joinPath(c.BuildContext.GOROOT, "src"),
+	}
+	return lctx.ImportPaths(args)
+}
+
+// joinPath calls c.BuildContext.JoinPath (if not nil) or else filepath.Join.
+//
+// It's a copy of the unexported build.Context.joinPath helper.
+func (c *Context) joinPath(elem ...string) string {
+	if f := c.BuildContext.JoinPath; f != nil {
+		return f(elem...)
+	}
+	return filepath.Join(elem...)
+}
diff --git a/vendor/github.com/kisielk/gotool/match18.go b/vendor/github.com/kisielk/gotool/match18.go
new file mode 100644
index 0000000..6d6b136
--- /dev/null
+++ b/vendor/github.com/kisielk/gotool/match18.go
@@ -0,0 +1,317 @@
+// Copyright (c) 2009 The Go Authors. All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//    * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//    * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//    * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// +build !go1.9
+
+package gotool
+
+import (
+	"fmt"
+	"go/build"
+	"log"
+	"os"
+	"path"
+	"path/filepath"
+	"regexp"
+	"strings"
+)
+
+// This file contains code from the Go distribution.
+
+// matchPattern(pattern)(name) reports whether
+// name matches pattern. Pattern is a limited glob
+// pattern in which '...' means 'any string' and there
+// is no other special syntax.
+func matchPattern(pattern string) func(name string) bool {
+	re := regexp.QuoteMeta(pattern)
+	re = strings.Replace(re, `\.\.\.`, `.*`, -1)
+	// Special case: foo/... matches foo too.
+	if strings.HasSuffix(re, `/.*`) {
+		re = re[:len(re)-len(`/.*`)] + `(/.*)?`
+	}
+	reg := regexp.MustCompile(`^` + re + `$`)
+	return reg.MatchString
+}
+
+// matchPackages returns a list of package paths matching pattern
+// (see go help packages for pattern syntax).
+func (c *Context) matchPackages(pattern string) []string {
+	match := func(string) bool { return true }
+	treeCanMatch := func(string) bool { return true }
+	if !isMetaPackage(pattern) {
+		match = matchPattern(pattern)
+		treeCanMatch = treeCanMatchPattern(pattern)
+	}
+
+	have := map[string]bool{
+		"builtin": true, // ignore pseudo-package that exists only for documentation
+	}
+	if !c.BuildContext.CgoEnabled {
+		have["runtime/cgo"] = true // ignore during walk
+	}
+	var pkgs []string
+
+	for _, src := range c.BuildContext.SrcDirs() {
+		if (pattern == "std" || pattern == "cmd") && src != gorootSrc {
+			continue
+		}
+		src = filepath.Clean(src) + string(filepath.Separator)
+		root := src
+		if pattern == "cmd" {
+			root += "cmd" + string(filepath.Separator)
+		}
+		filepath.Walk(root, func(path string, fi os.FileInfo, err error) error {
+			if err != nil || !fi.IsDir() || path == src {
+				return nil
+			}
+
+			// Avoid .foo, _foo, and testdata directory trees.
+			_, elem := filepath.Split(path)
+			if strings.HasPrefix(elem, ".") || strings.HasPrefix(elem, "_") || elem == "testdata" {
+				return filepath.SkipDir
+			}
+
+			name := filepath.ToSlash(path[len(src):])
+			if pattern == "std" && (!isStandardImportPath(name) || name == "cmd") {
+				// The name "std" is only the standard library.
+				// If the name is cmd, it's the root of the command tree.
+				return filepath.SkipDir
+			}
+			if !treeCanMatch(name) {
+				return filepath.SkipDir
+			}
+			if have[name] {
+				return nil
+			}
+			have[name] = true
+			if !match(name) {
+				return nil
+			}
+			_, err = c.BuildContext.ImportDir(path, 0)
+			if err != nil {
+				if _, noGo := err.(*build.NoGoError); noGo {
+					return nil
+				}
+			}
+			pkgs = append(pkgs, name)
+			return nil
+		})
+	}
+	return pkgs
+}
+
+// importPathsNoDotExpansion returns the import paths to use for the given
+// command line, but it does no ... expansion.
+func (c *Context) importPathsNoDotExpansion(args []string) []string {
+	if len(args) == 0 {
+		return []string{"."}
+	}
+	var out []string
+	for _, a := range args {
+		// Arguments are supposed to be import paths, but
+		// as a courtesy to Windows developers, rewrite \ to /
+		// in command-line arguments. Handles .\... and so on.
+		if filepath.Separator == '\\' {
+			a = strings.Replace(a, `\`, `/`, -1)
+		}
+
+		// Put argument in canonical form, but preserve leading ./.
+		if strings.HasPrefix(a, "./") {
+			a = "./" + path.Clean(a)
+			if a == "./." {
+				a = "."
+			}
+		} else {
+			a = path.Clean(a)
+		}
+		if isMetaPackage(a) {
+			out = append(out, c.allPackages(a)...)
+			continue
+		}
+		out = append(out, a)
+	}
+	return out
+}
+
+// importPaths returns the import paths to use for the given command line.
+func (c *Context) importPaths(args []string) []string {
+	args = c.importPathsNoDotExpansion(args)
+	var out []string
+	for _, a := range args {
+		if strings.Contains(a, "...") {
+			if build.IsLocalImport(a) {
+				out = append(out, c.allPackagesInFS(a)...)
+			} else {
+				out = append(out, c.allPackages(a)...)
+			}
+			continue
+		}
+		out = append(out, a)
+	}
+	return out
+}
+
+// allPackages returns all the packages that can be found
+// under the $GOPATH directories and $GOROOT matching pattern.
+// The pattern is either "all" (all packages), "std" (standard packages),
+// "cmd" (standard commands), or a path including "...".
+func (c *Context) allPackages(pattern string) []string {
+	pkgs := c.matchPackages(pattern)
+	if len(pkgs) == 0 {
+		fmt.Fprintf(os.Stderr, "warning: %q matched no packages\n", pattern)
+	}
+	return pkgs
+}
+
+// allPackagesInFS is like allPackages but is passed a pattern
+// beginning ./ or ../, meaning it should scan the tree rooted
+// at the given directory. There are ... in the pattern too.
+func (c *Context) allPackagesInFS(pattern string) []string {
+	pkgs := c.matchPackagesInFS(pattern)
+	if len(pkgs) == 0 {
+		fmt.Fprintf(os.Stderr, "warning: %q matched no packages\n", pattern)
+	}
+	return pkgs
+}
+
+// matchPackagesInFS returns a list of package paths matching pattern,
+// which must begin with ./ or ../
+// (see go help packages for pattern syntax).
+func (c *Context) matchPackagesInFS(pattern string) []string {
+	// Find directory to begin the scan.
+	// Could be smarter but this one optimization
+	// is enough for now, since ... is usually at the
+	// end of a path.
+	i := strings.Index(pattern, "...")
+	dir, _ := path.Split(pattern[:i])
+
+	// pattern begins with ./ or ../.
+	// path.Clean will discard the ./ but not the ../.
+	// We need to preserve the ./ for pattern matching
+	// and in the returned import paths.
+	prefix := ""
+	if strings.HasPrefix(pattern, "./") {
+		prefix = "./"
+	}
+	match := matchPattern(pattern)
+
+	var pkgs []string
+	filepath.Walk(dir, func(path string, fi os.FileInfo, err error) error {
+		if err != nil || !fi.IsDir() {
+			return nil
+		}
+		if path == dir {
+			// filepath.Walk starts at dir and recurses. For the recursive case,
+			// the path is the result of filepath.Join, which calls filepath.Clean.
+			// The initial case is not Cleaned, though, so we do this explicitly.
+			//
+			// This converts a path like "./io/" to "io". Without this step, running
+			// "cd $GOROOT/src; go list ./io/..." would incorrectly skip the io
+			// package, because prepending the prefix "./" to the unclean path would
+			// result in "././io", and match("././io") returns false.
+			path = filepath.Clean(path)
+		}
+
+		// Avoid .foo, _foo, and testdata directory trees, but do not avoid "." or "..".
+		_, elem := filepath.Split(path)
+		dot := strings.HasPrefix(elem, ".") && elem != "." && elem != ".."
+		if dot || strings.HasPrefix(elem, "_") || elem == "testdata" {
+			return filepath.SkipDir
+		}
+
+		name := prefix + filepath.ToSlash(path)
+		if !match(name) {
+			return nil
+		}
+
+		// We keep the directory if we can import it, or if we can't import it
+		// due to invalid Go source files. This means that directories containing
+		// parse errors will be built (and fail) instead of being silently skipped
+		// as not matching the pattern. Go 1.5 and earlier skipped, but that
+		// behavior means people miss serious mistakes.
+		// See golang.org/issue/11407.
+		if p, err := c.BuildContext.ImportDir(path, 0); err != nil && shouldIgnoreImport(p) {
+			if _, noGo := err.(*build.NoGoError); !noGo {
+				log.Print(err)
+			}
+			return nil
+		}
+		pkgs = append(pkgs, name)
+		return nil
+	})
+	return pkgs
+}
+
+// isMetaPackage checks if name is a reserved package name that expands to multiple packages.
+func isMetaPackage(name string) bool {
+	return name == "std" || name == "cmd" || name == "all"
+}
+
+// isStandardImportPath reports whether $GOROOT/src/path should be considered
+// part of the standard distribution. For historical reasons we allow people to add
+// their own code to $GOROOT instead of using $GOPATH, but we assume that
+// code will start with a domain name (dot in the first element).
+func isStandardImportPath(path string) bool {
+	i := strings.Index(path, "/")
+	if i < 0 {
+		i = len(path)
+	}
+	elem := path[:i]
+	return !strings.Contains(elem, ".")
+}
+
+// hasPathPrefix reports whether the path s begins with the
+// elements in prefix.
+func hasPathPrefix(s, prefix string) bool {
+	switch {
+	default:
+		return false
+	case len(s) == len(prefix):
+		return s == prefix
+	case len(s) > len(prefix):
+		if prefix != "" && prefix[len(prefix)-1] == '/' {
+			return strings.HasPrefix(s, prefix)
+		}
+		return s[len(prefix)] == '/' && s[:len(prefix)] == prefix
+	}
+}
+
+// treeCanMatchPattern(pattern)(name) reports whether
+// name or children of name can possibly match pattern.
+// Pattern is the same limited glob accepted by matchPattern.
+func treeCanMatchPattern(pattern string) func(name string) bool {
+	wildCard := false
+	if i := strings.Index(pattern, "..."); i >= 0 {
+		wildCard = true
+		pattern = pattern[:i]
+	}
+	return func(name string) bool {
+		return len(name) <= len(pattern) && hasPathPrefix(pattern, name) ||
+			wildCard && strings.HasPrefix(name, pattern)
+	}
+}
diff --git a/vendor/github.com/kisielk/gotool/tool.go b/vendor/github.com/kisielk/gotool/tool.go
new file mode 100644
index 0000000..c7409e1
--- /dev/null
+++ b/vendor/github.com/kisielk/gotool/tool.go
@@ -0,0 +1,48 @@
+// Package gotool contains utility functions used to implement the standard
+// "cmd/go" tool, provided as a convenience to developers who want to write
+// tools with similar semantics.
+package gotool
+
+import "go/build"
+
+// Export functions here to make it easier to keep the implementations up to date with upstream.
+
+// DefaultContext is the default context that uses build.Default.
+var DefaultContext = Context{
+	BuildContext: build.Default,
+}
+
+// A Context specifies the supporting context.
+type Context struct {
+	// BuildContext is the build.Context that is used when computing import paths.
+	BuildContext build.Context
+}
+
+// ImportPaths returns the import paths to use for the given command line.
+//
+// The path "all" is expanded to all packages in $GOPATH and $GOROOT.
+// The path "std" is expanded to all packages in the Go standard library.
+// The path "cmd" is expanded to all Go standard commands.
+// The string "..." is treated as a wildcard within a path.
+// When matching recursively, directories are ignored if they are prefixed with
+// a dot or an underscore (such as ".foo" or "_foo"), or are named "testdata".
+// Relative import paths are not converted to full import paths.
+// If args is empty, a single element "." is returned.
+func (c *Context) ImportPaths(args []string) []string {
+	return c.importPaths(args)
+}
+
+// ImportPaths returns the import paths to use for the given command line
+// using default context.
+//
+// The path "all" is expanded to all packages in $GOPATH and $GOROOT.
+// The path "std" is expanded to all packages in the Go standard library.
+// The path "cmd" is expanded to all Go standard commands.
+// The string "..." is treated as a wildcard within a path.
+// When matching recursively, directories are ignored if they are prefixed with
+// a dot or an underscore (such as ".foo" or "_foo"), or are named "testdata".
+// Relative import paths are not converted to full import paths.
+// If args is empty, a single element "." is returned.
+func ImportPaths(args []string) []string {
+	return DefaultContext.importPaths(args)
+}
diff --git a/vendor/github.com/wadey/gocovmerge/LICENSE b/vendor/github.com/wadey/gocovmerge/LICENSE
new file mode 100644
index 0000000..455fb10
--- /dev/null
+++ b/vendor/github.com/wadey/gocovmerge/LICENSE
@@ -0,0 +1,22 @@
+Copyright (c) 2015, Wade Simmons
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+1. Redistributions of source code must retain the above copyright notice, this
+   list of conditions and the following disclaimer.
+2. Redistributions in binary form must reproduce the above copyright notice,
+   this list of conditions and the following disclaimer in the documentation
+   and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/vendor/github.com/wadey/gocovmerge/gocovmerge.go b/vendor/github.com/wadey/gocovmerge/gocovmerge.go
new file mode 100644
index 0000000..e809983
--- /dev/null
+++ b/vendor/github.com/wadey/gocovmerge/gocovmerge.go
@@ -0,0 +1,111 @@
+// gocovmerge takes the results from multiple `go test -coverprofile` runs and
+// merges them into one profile
+package main
+
+import (
+	"flag"
+	"fmt"
+	"io"
+	"log"
+	"os"
+	"sort"
+
+	"golang.org/x/tools/cover"
+)
+
+func mergeProfiles(p *cover.Profile, merge *cover.Profile) {
+	if p.Mode != merge.Mode {
+		log.Fatalf("cannot merge profiles with different modes")
+	}
+	// Since the blocks are sorted, we can keep track of where the last block
+	// was inserted and only look at the blocks after that as targets for merge
+	startIndex := 0
+	for _, b := range merge.Blocks {
+		startIndex = mergeProfileBlock(p, b, startIndex)
+	}
+}
+
+func mergeProfileBlock(p *cover.Profile, pb cover.ProfileBlock, startIndex int) int {
+	sortFunc := func(i int) bool {
+		pi := p.Blocks[i+startIndex]
+		return pi.StartLine >= pb.StartLine && (pi.StartLine != pb.StartLine || pi.StartCol >= pb.StartCol)
+	}
+
+	i := 0
+	if sortFunc(i) != true {
+		i = sort.Search(len(p.Blocks)-startIndex, sortFunc)
+	}
+	i += startIndex
+	if i < len(p.Blocks) && p.Blocks[i].StartLine == pb.StartLine && p.Blocks[i].StartCol == pb.StartCol {
+		if p.Blocks[i].EndLine != pb.EndLine || p.Blocks[i].EndCol != pb.EndCol {
+			log.Fatalf("OVERLAP MERGE: %v %v %v", p.FileName, p.Blocks[i], pb)
+		}
+		switch p.Mode {
+		case "set":
+			p.Blocks[i].Count |= pb.Count
+		case "count", "atomic":
+			p.Blocks[i].Count += pb.Count
+		default:
+			log.Fatalf("unsupported covermode: '%s'", p.Mode)
+		}
+	} else {
+		if i > 0 {
+			pa := p.Blocks[i-1]
+			if pa.EndLine >= pb.EndLine && (pa.EndLine != pb.EndLine || pa.EndCol > pb.EndCol) {
+				log.Fatalf("OVERLAP BEFORE: %v %v %v", p.FileName, pa, pb)
+			}
+		}
+		if i < len(p.Blocks)-1 {
+			pa := p.Blocks[i+1]
+			if pa.StartLine <= pb.StartLine && (pa.StartLine != pb.StartLine || pa.StartCol < pb.StartCol) {
+				log.Fatalf("OVERLAP AFTER: %v %v %v", p.FileName, pa, pb)
+			}
+		}
+		p.Blocks = append(p.Blocks, cover.ProfileBlock{})
+		copy(p.Blocks[i+1:], p.Blocks[i:])
+		p.Blocks[i] = pb
+	}
+	return i + 1
+}
+
+func addProfile(profiles []*cover.Profile, p *cover.Profile) []*cover.Profile {
+	i := sort.Search(len(profiles), func(i int) bool { return profiles[i].FileName >= p.FileName })
+	if i < len(profiles) && profiles[i].FileName == p.FileName {
+		mergeProfiles(profiles[i], p)
+	} else {
+		profiles = append(profiles, nil)
+		copy(profiles[i+1:], profiles[i:])
+		profiles[i] = p
+	}
+	return profiles
+}
+
+func dumpProfiles(profiles []*cover.Profile, out io.Writer) {
+	if len(profiles) == 0 {
+		return
+	}
+	fmt.Fprintf(out, "mode: %s\n", profiles[0].Mode)
+	for _, p := range profiles {
+		for _, b := range p.Blocks {
+			fmt.Fprintf(out, "%s:%d.%d,%d.%d %d %d\n", p.FileName, b.StartLine, b.StartCol, b.EndLine, b.EndCol, b.NumStmt, b.Count)
+		}
+	}
+}
+
+func main() {
+	flag.Parse()
+
+	var merged []*cover.Profile
+
+	for _, file := range flag.Args() {
+		profiles, err := cover.ParseProfiles(file)
+		if err != nil {
+			log.Fatalf("failed to parse profiles: %v", err)
+		}
+		for _, p := range profiles {
+			merged = addProfile(merged, p)
+		}
+	}
+
+	dumpProfiles(merged, os.Stdout)
+}