vendor: add new dependencies

7 years ago · 5e158b51db
45 changed files with 2473 additions and 0 deletions
--- a/vendor/github.com/modern-go/concurrent/LICENSE
+++ b/vendor/github.com/modern-go/concurrent/LICENSE
@ -0,0 +1,201 @@
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--- a/vendor/github.com/modern-go/concurrent/README.md
+++ b/vendor/github.com/modern-go/concurrent/README.md
@ -0,0 +1,49 @@
 # concurrent
 [![Sourcegraph](https://sourcegraph.com/github.com/modern-go/concurrent/-/badge.svg)](https://sourcegraph.com/github.com/modern-go/concurrent?badge)
 [![GoDoc](http://img.shields.io/badge/go-documentation-blue.svg?style=flat-square)](http://godoc.org/github.com/modern-go/concurrent)
 [![Build Status](https://travis-ci.org/modern-go/concurrent.svg?branch=master)](https://travis-ci.org/modern-go/concurrent)
 [![codecov](https://codecov.io/gh/modern-go/concurrent/branch/master/graph/badge.svg)](https://codecov.io/gh/modern-go/concurrent)
 [![rcard](https://goreportcard.com/badge/github.com/modern-go/concurrent)](https://goreportcard.com/report/github.com/modern-go/concurrent)
 [![License](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](https://raw.githubusercontent.com/modern-go/concurrent/master/LICENSE)
 * concurrent.Map: backport sync.Map for go below 1.9
 * concurrent.Executor: goroutine with explicit ownership and cancellable
 # concurrent.Map
 because sync.Map is only available in go 1.9, we can use concurrent.Map to make code portable
 ```go
 m := concurrent.NewMap()
 m.Store("hello", "world")
 elem, found := m.Load("hello")
 // elem will be "world"
 // found will be true
 ```
 # concurrent.Executor
 ```go
 executor := concurrent.NewUnboundedExecutor()
 executor.Go(func(ctx context.Context) {
    everyMillisecond := time.NewTicker(time.Millisecond)
    for {
        select {
        case <-ctx.Done():
            fmt.Println("goroutine exited")
            return
        case <-everyMillisecond.C:
            // do something
        }
    }
 })
 time.Sleep(time.Second)
 executor.StopAndWaitForever()
 fmt.Println("executor stopped")
 ```
 attach goroutine to executor instance, so that we can
 * cancel it by stop the executor with Stop/StopAndWait/StopAndWaitForever
 * handle panic by callback: the default behavior will no longer crash your application
--- a/vendor/github.com/modern-go/concurrent/executor.go
+++ b/vendor/github.com/modern-go/concurrent/executor.go
@ -0,0 +1,14 @@
 package concurrent
 import "context"
 // Executor replace go keyword to start a new goroutine
 // the goroutine should cancel itself if the context passed in has been cancelled
 // the goroutine started by the executor, is owned by the executor
 // we can cancel all executors owned by the executor just by stop the executor itself
 // however Executor interface does not Stop method, the one starting and owning executor
 // should use the concrete type of executor, instead of this interface.
 type Executor interface {
 	// Go starts a new goroutine controlled by the context
 	Go(handler func(ctx context.Context))
 }
--- a/vendor/github.com/modern-go/concurrent/go_above_19.go
+++ b/vendor/github.com/modern-go/concurrent/go_above_19.go
@ -0,0 +1,15 @@
 //+build go1.9
 package concurrent
 import "sync"
 // Map is a wrapper for sync.Map introduced in go1.9
 type Map struct {
 	sync.Map
 }
 // NewMap creates a thread safe Map
 func NewMap() *Map {
 	return &Map{}
 }
--- a/vendor/github.com/modern-go/concurrent/go_below_19.go
+++ b/vendor/github.com/modern-go/concurrent/go_below_19.go
@ -0,0 +1,33 @@
 //+build !go1.9
 package concurrent
 import "sync"
 // Map implements a thread safe map for go version below 1.9 using mutex
 type Map struct {
 	lock sync.RWMutex
 	data map[interface{}]interface{}
 }
 // NewMap creates a thread safe map
 func NewMap() *Map {
 	return &Map{
 		data: make(map[interface{}]interface{}, 32),
 	}
 }
 // Load is same as sync.Map Load
 func (m *Map) Load(key interface{}) (elem interface{}, found bool) {
 	m.lock.RLock()
 	elem, found = m.data[key]
 	m.lock.RUnlock()
 	return
 }
 // Load is same as sync.Map Store
 func (m *Map) Store(key interface{}, elem interface{}) {
 	m.lock.Lock()
 	m.data[key] = elem
 	m.lock.Unlock()
 }
--- a/vendor/github.com/modern-go/concurrent/log.go
+++ b/vendor/github.com/modern-go/concurrent/log.go
@ -0,0 +1,13 @@
 package concurrent
 import (
 	"os"
 	"log"
 	"io/ioutil"
 )
 // ErrorLogger is used to print out error, can be set to writer other than stderr
 var ErrorLogger = log.New(os.Stderr, "", 0)
 // InfoLogger is used to print informational message, default to off
 var InfoLogger = log.New(ioutil.Discard, "", 0)
--- a/vendor/github.com/modern-go/concurrent/test.sh
+++ b/vendor/github.com/modern-go/concurrent/test.sh
@ -0,0 +1,12 @@
 #!/usr/bin/env bash
 set -e
 echo "" > coverage.txt
 for d in $(go list ./... | grep -v vendor); do
    go test -coverprofile=profile.out -coverpkg=github.com/modern-go/concurrent $d
    if [ -f profile.out ]; then
        cat profile.out >> coverage.txt
        rm profile.out
    fi
 done
--- a/vendor/github.com/modern-go/concurrent/unbounded_executor.go
+++ b/vendor/github.com/modern-go/concurrent/unbounded_executor.go
@ -0,0 +1,119 @@
 package concurrent
 import (
 	"context"
 	"fmt"
 	"runtime"
 	"runtime/debug"
 	"sync"
 	"time"
 	"reflect"
 )
 // HandlePanic logs goroutine panic by default
 var HandlePanic = func(recovered interface{}, funcName string) {
 	ErrorLogger.Println(fmt.Sprintf("%s panic: %v", funcName, recovered))
 	ErrorLogger.Println(string(debug.Stack()))
 }
 // UnboundedExecutor is a executor without limits on counts of alive goroutines
 // it tracks the goroutine started by it, and can cancel them when shutdown
 type UnboundedExecutor struct {
 	ctx                   context.Context
 	cancel                context.CancelFunc
 	activeGoroutinesMutex *sync.Mutex
 	activeGoroutines      map[string]int
 	HandlePanic           func(recovered interface{}, funcName string)
 }
 // GlobalUnboundedExecutor has the life cycle of the program itself
 // any goroutine want to be shutdown before main exit can be started from this executor
 // GlobalUnboundedExecutor expects the main function to call stop
 // it does not magically knows the main function exits
 var GlobalUnboundedExecutor = NewUnboundedExecutor()
 // NewUnboundedExecutor creates a new UnboundedExecutor,
 // UnboundedExecutor can not be created by &UnboundedExecutor{}
 // HandlePanic can be set with a callback to override global HandlePanic
 func NewUnboundedExecutor() *UnboundedExecutor {
 	ctx, cancel := context.WithCancel(context.TODO())
 	return &UnboundedExecutor{
 		ctx:                   ctx,
 		cancel:                cancel,
 		activeGoroutinesMutex: &sync.Mutex{},
 		activeGoroutines:      map[string]int{},
 	}
 }
 // Go starts a new goroutine and tracks its lifecycle.
 // Panic will be recovered and logged automatically, except for StopSignal
 func (executor *UnboundedExecutor) Go(handler func(ctx context.Context)) {
 	pc := reflect.ValueOf(handler).Pointer()
 	f := runtime.FuncForPC(pc)
 	funcName := f.Name()
 	file, line := f.FileLine(pc)
 	executor.activeGoroutinesMutex.Lock()
 	defer executor.activeGoroutinesMutex.Unlock()
 	startFrom := fmt.Sprintf("%s:%d", file, line)
 	executor.activeGoroutines[startFrom] += 1
 	go func() {
 		defer func() {
 			recovered := recover()
 			// if you want to quit a goroutine without trigger HandlePanic
 			// use runtime.Goexit() to quit
 			if recovered != nil {
 				if executor.HandlePanic == nil {
 					HandlePanic(recovered, funcName)
 				} else {
 					executor.HandlePanic(recovered, funcName)
 				}
 			}
 			executor.activeGoroutinesMutex.Lock()
 			executor.activeGoroutines[startFrom] -= 1
 			executor.activeGoroutinesMutex.Unlock()
 		}()
 		handler(executor.ctx)
 	}()
 }
 // Stop cancel all goroutines started by this executor without wait
 func (executor *UnboundedExecutor) Stop() {
 	executor.cancel()
 }
 // StopAndWaitForever cancel all goroutines started by this executor and
 // wait until all goroutines exited
 func (executor *UnboundedExecutor) StopAndWaitForever() {
 	executor.StopAndWait(context.Background())
 }
 // StopAndWait cancel all goroutines started by this executor and wait.
 // Wait can be cancelled by the context passed in.
 func (executor *UnboundedExecutor) StopAndWait(ctx context.Context) {
 	executor.cancel()
 	for {
 		oneHundredMilliseconds := time.NewTimer(time.Millisecond * 100)
 		select {
 		case <-oneHundredMilliseconds.C:
 			if executor.checkNoActiveGoroutines() {
 				return
 			}
 		case <-ctx.Done():
 			return
 		}
 	}
 }
 func (executor *UnboundedExecutor) checkNoActiveGoroutines() bool {
 	executor.activeGoroutinesMutex.Lock()
 	defer executor.activeGoroutinesMutex.Unlock()
 	for startFrom, count := range executor.activeGoroutines {
 		if count > 0 {
 			InfoLogger.Println("UnboundedExecutor is still waiting goroutines to quit",
 				"startFrom", startFrom,
 				"count", count)
 			return false
 		}
 	}
 	return true
 }
--- a/vendor/github.com/modern-go/reflect2/Gopkg.lock
+++ b/vendor/github.com/modern-go/reflect2/Gopkg.lock
@ -0,0 +1,15 @@
 # This file is autogenerated, do not edit; changes may be undone by the next 'dep ensure'.
 [[projects]]
  name = "github.com/modern-go/concurrent"
  packages = ["."]
  revision = "e0a39a4cb4216ea8db28e22a69f4ec25610d513a"
  version = "1.0.0"
 [solve-meta]
  analyzer-name = "dep"
  analyzer-version = 1
  inputs-digest = "daee8a88b3498b61c5640056665b8b9eea062006f5e596bbb6a3ed9119a11ec7"
  solver-name = "gps-cdcl"
  solver-version = 1
--- a/vendor/github.com/modern-go/reflect2/Gopkg.toml
+++ b/vendor/github.com/modern-go/reflect2/Gopkg.toml
@ -0,0 +1,35 @@
 # Gopkg.toml example
 #
 # Refer to https://golang.github.io/dep/docs/Gopkg.toml.html
 # for detailed Gopkg.toml documentation.
 #
 # required = ["github.com/user/thing/cmd/thing"]
 # ignored = ["github.com/user/project/pkgX", "bitbucket.org/user/project/pkgA/pkgY"]
 #
 # [[constraint]]
 #   name = "github.com/user/project"
 #   version = "1.0.0"
 #
 # [[constraint]]
 #   name = "github.com/user/project2"
 #   branch = "dev"
 #   source = "github.com/myfork/project2"
 #
 # [[override]]
 #   name = "github.com/x/y"
 #   version = "2.4.0"
 #
 # [prune]
 #   non-go = false
 #   go-tests = true
 #   unused-packages = true
 ignored = ["github.com/modern-go/test","github.com/modern-go/test/must","github.com/modern-go/test/should"]
 [[constraint]]
  name = "github.com/modern-go/concurrent"
  version = "1.0.0"
 [prune]
  go-tests = true
  unused-packages = true
--- a/vendor/github.com/modern-go/reflect2/LICENSE
+++ b/vendor/github.com/modern-go/reflect2/LICENSE
@ -0,0 +1,201 @@
                                 Apache License
                           Version 2.0, January 2004
                        http://www.apache.org/licenses/
   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
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      other entities that control, are controlled by, or are under common
      control with that entity. For the purposes of this definition,
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      direction or management of such entity, whether by contract or
      otherwise, or (ii) ownership of fifty percent (50%) or more of the
      outstanding shares, or (iii) beneficial ownership of such entity.
      "You" (or "Your") shall mean an individual or Legal Entity
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      including but not limited to software source code, documentation
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      form, that is based on (or derived from) the Work and for which the
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      Notwithstanding the above, nothing herein shall supersede or modify
      the terms of any separate license agreement you may have executed
      with Licensor regarding such Contributions.
   6. Trademarks. This License does not grant permission to use the trade
      names, trademarks, service marks, or product names of the Licensor,
      except as required for reasonable and customary use in describing the
      origin of the Work and reproducing the content of the NOTICE file.
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      appropriateness of using or redistributing the Work and assume any
      risks associated with Your exercise of permissions under this License.
   8. Limitation of Liability. In no event and under no legal theory,
      whether in tort (including negligence), contract, or otherwise,
      unless required by applicable law (such as deliberate and grossly
      negligent acts) or agreed to in writing, shall any Contributor be
      liable to You for damages, including any direct, indirect, special,
      incidental, or consequential damages of any character arising as a
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      has been advised of the possibility of such damages.
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      the Work or Derivative Works thereof, You may choose to offer,
      and charge a fee for, acceptance of support, warranty, indemnity,
      or other liability obligations and/or rights consistent with this
      License. However, in accepting such obligations, You may act only
      on Your own behalf and on Your sole responsibility, not on behalf
      of any other Contributor, and only if You agree to indemnify,
      defend, and hold each Contributor harmless for any liability
      incurred by, or claims asserted against, such Contributor by reason
      of your accepting any such warranty or additional liability.
   END OF TERMS AND CONDITIONS
   APPENDIX: How to apply the Apache License to your work.
      To apply the Apache License to your work, attach the following
      boilerplate notice, with the fields enclosed by brackets "[]"
      replaced with your own identifying information. (Don't include
      the brackets!)  The text should be enclosed in the appropriate
      comment syntax for the file format. We also recommend that a
      file or class name and description of purpose be included on the
      same "printed page" as the copyright notice for easier
      identification within third-party archives.
   Copyright [yyyy] [name of copyright owner]
   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at
       http://www.apache.org/licenses/LICENSE-2.0
   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.
--- a/vendor/github.com/modern-go/reflect2/README.md
+++ b/vendor/github.com/modern-go/reflect2/README.md
@ -0,0 +1,71 @@
 # reflect2
 [![Sourcegraph](https://sourcegraph.com/github.com/modern-go/reflect2/-/badge.svg)](https://sourcegraph.com/github.com/modern-go/reflect2?badge)
 [![GoDoc](http://img.shields.io/badge/go-documentation-blue.svg?style=flat-square)](http://godoc.org/github.com/modern-go/reflect2)
 [![Build Status](https://travis-ci.org/modern-go/reflect2.svg?branch=master)](https://travis-ci.org/modern-go/reflect2)
 [![codecov](https://codecov.io/gh/modern-go/reflect2/branch/master/graph/badge.svg)](https://codecov.io/gh/modern-go/reflect2)
 [![rcard](https://goreportcard.com/badge/github.com/modern-go/reflect2)](https://goreportcard.com/report/github.com/modern-go/reflect2)
 [![License](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](https://raw.githubusercontent.com/modern-go/reflect2/master/LICENSE)
 reflect api that avoids runtime reflect.Value cost
 * reflect get/set interface{}, with type checking
 * reflect get/set unsafe.Pointer, without type checking
 * `reflect2.TypeByName` works like `Class.forName` found in java
 [json-iterator](https://github.com/json-iterator/go) use this package to save runtime dispatching cost.
 This package is designed for low level libraries to optimize reflection performance.
 General application should still use reflect standard library.
 # reflect2.TypeByName
 ```go
 // given package is github.com/your/awesome-package
 type MyStruct struct {
 	// ...
 }
 // will return the type
 reflect2.TypeByName("awesome-package.MyStruct")
 // however, if the type has not been used
 // it will be eliminated by compiler, so we can not get it in runtime
 ```
 # reflect2 get/set interface{}
 ```go
 valType := reflect2.TypeOf(1)
 i := 1
 j := 10
 valType.Set(&i, &j)
 // i will be 10
 ```
 to get set `type`, always use its pointer `*type`
 # reflect2 get/set unsafe.Pointer
 ```go
 valType := reflect2.TypeOf(1)
 i := 1
 j := 10
 valType.UnsafeSet(unsafe.Pointer(&i), unsafe.Pointer(&j))
 // i will be 10
 ```
 to get set `type`, always use its pointer `*type`
 # benchmark
 Benchmark is not necessary for this package. It does nothing actually.
 As it is just a thin wrapper to make go runtime public. 
 Both `reflect2` and `reflect` call same function 
 provided by `runtime` package exposed by go language.
 # unsafe safety
 Instead of casting `[]byte` to `sliceHeader` in your application using unsafe.
 We can use reflect2 instead. This way, if `sliceHeader` changes in the future,
 only reflect2 need to be upgraded.
 reflect2 tries its best to keep the implementation same as reflect (by testing).
--- a/vendor/github.com/modern-go/reflect2/go_above_17.go
+++ b/vendor/github.com/modern-go/reflect2/go_above_17.go
@ -0,0 +1,8 @@
 //+build go1.7
 package reflect2
 import "unsafe"
 //go:linkname resolveTypeOff reflect.resolveTypeOff
 func resolveTypeOff(rtype unsafe.Pointer, off int32) unsafe.Pointer
--- a/vendor/github.com/modern-go/reflect2/go_above_19.go
+++ b/vendor/github.com/modern-go/reflect2/go_above_19.go
@ -0,0 +1,14 @@
 //+build go1.9
 package reflect2
 import (
 	"unsafe"
 )
 //go:linkname makemap reflect.makemap
 func makemap(rtype unsafe.Pointer, cap int) (m unsafe.Pointer)
 func makeMapWithSize(rtype unsafe.Pointer, cap int) unsafe.Pointer {
 	return makemap(rtype, cap)
 }
--- a/vendor/github.com/modern-go/reflect2/go_below_17.go
+++ b/vendor/github.com/modern-go/reflect2/go_below_17.go
@ -0,0 +1,9 @@
 //+build !go1.7
 package reflect2
 import "unsafe"
 func resolveTypeOff(rtype unsafe.Pointer, off int32) unsafe.Pointer {
 	return nil
 }
--- a/vendor/github.com/modern-go/reflect2/go_below_19.go
+++ b/vendor/github.com/modern-go/reflect2/go_below_19.go
@ -0,0 +1,14 @@
 //+build !go1.9
 package reflect2
 import (
 	"unsafe"
 )
 //go:linkname makemap reflect.makemap
 func makemap(rtype unsafe.Pointer) (m unsafe.Pointer)
 func makeMapWithSize(rtype unsafe.Pointer, cap int) unsafe.Pointer {
 	return makemap(rtype)
 }
--- a/vendor/github.com/modern-go/reflect2/reflect2.go
+++ b/vendor/github.com/modern-go/reflect2/reflect2.go
@ -0,0 +1,298 @@
 package reflect2
 import (
 	"github.com/modern-go/concurrent"
 	"reflect"
 	"unsafe"
 )
 type Type interface {
 	Kind() reflect.Kind
 	// New return pointer to data of this type
 	New() interface{}
 	// UnsafeNew return the allocated space pointed by unsafe.Pointer
 	UnsafeNew() unsafe.Pointer
 	// PackEFace cast a unsafe pointer to object represented pointer
 	PackEFace(ptr unsafe.Pointer) interface{}
 	// Indirect dereference object represented pointer to this type
 	Indirect(obj interface{}) interface{}
 	// UnsafeIndirect dereference pointer to this type
 	UnsafeIndirect(ptr unsafe.Pointer) interface{}
 	// Type1 returns reflect.Type
 	Type1() reflect.Type
 	Implements(thatType Type) bool
 	String() string
 	RType() uintptr
 	// interface{} of this type has pointer like behavior
 	LikePtr() bool
 	IsNullable() bool
 	IsNil(obj interface{}) bool
 	UnsafeIsNil(ptr unsafe.Pointer) bool
 	Set(obj interface{}, val interface{})
 	UnsafeSet(ptr unsafe.Pointer, val unsafe.Pointer)
 	AssignableTo(anotherType Type) bool
 }
 type ListType interface {
 	Type
 	Elem() Type
 	SetIndex(obj interface{}, index int, elem interface{})
 	UnsafeSetIndex(obj unsafe.Pointer, index int, elem unsafe.Pointer)
 	GetIndex(obj interface{}, index int) interface{}
 	UnsafeGetIndex(obj unsafe.Pointer, index int) unsafe.Pointer
 }
 type ArrayType interface {
 	ListType
 	Len() int
 }
 type SliceType interface {
 	ListType
 	MakeSlice(length int, cap int) interface{}
 	UnsafeMakeSlice(length int, cap int) unsafe.Pointer
 	Grow(obj interface{}, newLength int)
 	UnsafeGrow(ptr unsafe.Pointer, newLength int)
 	Append(obj interface{}, elem interface{})
 	UnsafeAppend(obj unsafe.Pointer, elem unsafe.Pointer)
 	LengthOf(obj interface{}) int
 	UnsafeLengthOf(ptr unsafe.Pointer) int
 	SetNil(obj interface{})
 	UnsafeSetNil(ptr unsafe.Pointer)
 	Cap(obj interface{}) int
 	UnsafeCap(ptr unsafe.Pointer) int
 }
 type StructType interface {
 	Type
 	NumField() int
 	Field(i int) StructField
 	FieldByName(name string) StructField
 	FieldByIndex(index []int) StructField
 	FieldByNameFunc(match func(string) bool) StructField
 }
 type StructField interface {
 	Offset() uintptr
 	Name() string
 	PkgPath() string
 	Type() Type
 	Tag() reflect.StructTag
 	Index() []int
 	Anonymous() bool
 	Set(obj interface{}, value interface{})
 	UnsafeSet(obj unsafe.Pointer, value unsafe.Pointer)
 	Get(obj interface{}) interface{}
 	UnsafeGet(obj unsafe.Pointer) unsafe.Pointer
 }
 type MapType interface {
 	Type
 	Key() Type
 	Elem() Type
 	MakeMap(cap int) interface{}
 	UnsafeMakeMap(cap int) unsafe.Pointer
 	SetIndex(obj interface{}, key interface{}, elem interface{})
 	UnsafeSetIndex(obj unsafe.Pointer, key unsafe.Pointer, elem unsafe.Pointer)
 	TryGetIndex(obj interface{}, key interface{}) (interface{}, bool)
 	GetIndex(obj interface{}, key interface{}) interface{}
 	UnsafeGetIndex(obj unsafe.Pointer, key unsafe.Pointer) unsafe.Pointer
 	Iterate(obj interface{}) MapIterator
 	UnsafeIterate(obj unsafe.Pointer) MapIterator
 }
 type MapIterator interface {
 	HasNext() bool
 	Next() (key interface{}, elem interface{})
 	UnsafeNext() (key unsafe.Pointer, elem unsafe.Pointer)
 }
 type PtrType interface {
 	Type
 	Elem() Type
 }
 type InterfaceType interface {
 	NumMethod() int
 }
 type Config struct {
 	UseSafeImplementation bool
 }
 type API interface {
 	TypeOf(obj interface{}) Type
 	Type2(type1 reflect.Type) Type
 }
 var ConfigUnsafe = Config{UseSafeImplementation: false}.Froze()
 var ConfigSafe = Config{UseSafeImplementation: true}.Froze()
 type frozenConfig struct {
 	useSafeImplementation bool
 	cache                 *concurrent.Map
 }
 func (cfg Config) Froze() *frozenConfig {
 	return &frozenConfig{
 		useSafeImplementation: cfg.UseSafeImplementation,
 		cache: concurrent.NewMap(),
 	}
 }
 func (cfg *frozenConfig) TypeOf(obj interface{}) Type {
 	cacheKey := uintptr(unpackEFace(obj).rtype)
 	typeObj, found := cfg.cache.Load(cacheKey)
 	if found {
 		return typeObj.(Type)
 	}
 	return cfg.Type2(reflect.TypeOf(obj))
 }
 func (cfg *frozenConfig) Type2(type1 reflect.Type) Type {
 	if type1 == nil {
 		return nil
 	}
 	cacheKey := uintptr(unpackEFace(type1).data)
 	typeObj, found := cfg.cache.Load(cacheKey)
 	if found {
 		return typeObj.(Type)
 	}
 	type2 := cfg.wrapType(type1)
 	cfg.cache.Store(cacheKey, type2)
 	return type2
 }
 func (cfg *frozenConfig) wrapType(type1 reflect.Type) Type {
 	safeType := safeType{Type: type1, cfg: cfg}
 	switch type1.Kind() {
 	case reflect.Struct:
 		if cfg.useSafeImplementation {
 			return &safeStructType{safeType}
 		}
 		return newUnsafeStructType(cfg, type1)
 	case reflect.Array:
 		if cfg.useSafeImplementation {
 			return &safeSliceType{safeType}
 		}
 		return newUnsafeArrayType(cfg, type1)
 	case reflect.Slice:
 		if cfg.useSafeImplementation {
 			return &safeSliceType{safeType}
 		}
 		return newUnsafeSliceType(cfg, type1)
 	case reflect.Map:
 		if cfg.useSafeImplementation {
 			return &safeMapType{safeType}
 		}
 		return newUnsafeMapType(cfg, type1)
 	case reflect.Ptr, reflect.Chan, reflect.Func:
 		if cfg.useSafeImplementation {
 			return &safeMapType{safeType}
 		}
 		return newUnsafePtrType(cfg, type1)
 	case reflect.Interface:
 		if cfg.useSafeImplementation {
 			return &safeMapType{safeType}
 		}
 		if type1.NumMethod() == 0 {
 			return newUnsafeEFaceType(cfg, type1)
 		}
 		return newUnsafeIFaceType(cfg, type1)
 	default:
 		if cfg.useSafeImplementation {
 			return &safeType
 		}
 		return newUnsafeType(cfg, type1)
 	}
 }
 func TypeOf(obj interface{}) Type {
 	return ConfigUnsafe.TypeOf(obj)
 }
 func TypeOfPtr(obj interface{}) PtrType {
 	return TypeOf(obj).(PtrType)
 }
 func Type2(type1 reflect.Type) Type {
 	if type1 == nil {
 		return nil
 	}
 	return ConfigUnsafe.Type2(type1)
 }
 func PtrTo(typ Type) Type {
 	return Type2(reflect.PtrTo(typ.Type1()))
 }
 func PtrOf(obj interface{}) unsafe.Pointer {
 	return unpackEFace(obj).data
 }
 func RTypeOf(obj interface{}) uintptr {
 	return uintptr(unpackEFace(obj).rtype)
 }
 func IsNil(obj interface{}) bool {
 	if obj == nil {
 		return true
 	}
 	return unpackEFace(obj).data == nil
 }
 func IsNullable(kind reflect.Kind) bool {
 	switch kind {
 	case reflect.Ptr, reflect.Map, reflect.Chan, reflect.Func, reflect.Slice, reflect.Interface:
 		return true
 	}
 	return false
 }
 func likePtrKind(kind reflect.Kind) bool {
 	switch kind {
 	case reflect.Ptr, reflect.Map, reflect.Chan, reflect.Func:
 		return true
 	}
 	return false
 }
 func likePtrType(typ reflect.Type) bool {
 	if likePtrKind(typ.Kind()) {
 		return true
 	}
 	if typ.Kind() == reflect.Struct {
 		if typ.NumField() != 1 {
 			return false
 		}
 		return likePtrType(typ.Field(0).Type)
 	}
 	if typ.Kind() == reflect.Array {
 		if typ.Len() != 1 {
 			return false
 		}
 		return likePtrType(typ.Elem())
 	}
 	return false
 }
 // NoEscape hides a pointer from escape analysis.  noescape is
 // the identity function but escape analysis doesn't think the
 // output depends on the input.  noescape is inlined and currently
 // compiles down to zero instructions.
 // USE CAREFULLY!
 //go:nosplit
 func NoEscape(p unsafe.Pointer) unsafe.Pointer {
 	x := uintptr(p)
 	return unsafe.Pointer(x ^ 0)
 }
 func UnsafeCastString(str string) []byte {
 	stringHeader := (*reflect.StringHeader)(unsafe.Pointer(&str))
 	sliceHeader := &reflect.SliceHeader{
 		Data: stringHeader.Data,
 		Cap: stringHeader.Len,
 		Len: stringHeader.Len,
 	}
 	return *(*[]byte)(unsafe.Pointer(sliceHeader))
 }
--- a/vendor/github.com/modern-go/reflect2/reflect2_amd64.s
+++ b/vendor/github.com/modern-go/reflect2/reflect2_amd64.s
--- a/vendor/github.com/modern-go/reflect2/reflect2_kind.go
+++ b/vendor/github.com/modern-go/reflect2/reflect2_kind.go
@ -0,0 +1,30 @@
 package reflect2
 import (
 	"reflect"
 	"unsafe"
 )
 // DefaultTypeOfKind return the non aliased default type for the kind
 func DefaultTypeOfKind(kind reflect.Kind) Type {
 	return kindTypes[kind]
 }
 var kindTypes = map[reflect.Kind]Type{
 	reflect.Bool:          TypeOf(true),
 	reflect.Uint8:         TypeOf(uint8(0)),
 	reflect.Int8:          TypeOf(int8(0)),
 	reflect.Uint16:        TypeOf(uint16(0)),
 	reflect.Int16:         TypeOf(int16(0)),
 	reflect.Uint32:        TypeOf(uint32(0)),
 	reflect.Int32:         TypeOf(int32(0)),
 	reflect.Uint64:        TypeOf(uint64(0)),
 	reflect.Int64:         TypeOf(int64(0)),
 	reflect.Uint:          TypeOf(uint(0)),
 	reflect.Int:           TypeOf(int(0)),
 	reflect.Float32:       TypeOf(float32(0)),
 	reflect.Float64:       TypeOf(float64(0)),
 	reflect.Uintptr:       TypeOf(uintptr(0)),
 	reflect.String:        TypeOf(""),
 	reflect.UnsafePointer: TypeOf(unsafe.Pointer(nil)),
 }
--- a/vendor/github.com/modern-go/reflect2/relfect2_386.s
+++ b/vendor/github.com/modern-go/reflect2/relfect2_386.s
--- a/vendor/github.com/modern-go/reflect2/relfect2_amd64p32.s
+++ b/vendor/github.com/modern-go/reflect2/relfect2_amd64p32.s
--- a/vendor/github.com/modern-go/reflect2/relfect2_arm.s
+++ b/vendor/github.com/modern-go/reflect2/relfect2_arm.s
--- a/vendor/github.com/modern-go/reflect2/relfect2_arm64.s
+++ b/vendor/github.com/modern-go/reflect2/relfect2_arm64.s
--- a/vendor/github.com/modern-go/reflect2/relfect2_mips64x.s
+++ b/vendor/github.com/modern-go/reflect2/relfect2_mips64x.s
--- a/vendor/github.com/modern-go/reflect2/relfect2_mipsx.s
+++ b/vendor/github.com/modern-go/reflect2/relfect2_mipsx.s
--- a/vendor/github.com/modern-go/reflect2/relfect2_ppc64x.s
+++ b/vendor/github.com/modern-go/reflect2/relfect2_ppc64x.s
--- a/vendor/github.com/modern-go/reflect2/relfect2_s390x.s
+++ b/vendor/github.com/modern-go/reflect2/relfect2_s390x.s
--- a/vendor/github.com/modern-go/reflect2/safe_field.go
+++ b/vendor/github.com/modern-go/reflect2/safe_field.go
@ -0,0 +1,58 @@
 package reflect2
 import (
 	"reflect"
 	"unsafe"
 )
 type safeField struct {
 	reflect.StructField
 }
 func (field *safeField) Offset() uintptr {
 	return field.StructField.Offset
 }
 func (field *safeField) Name() string {
 	return field.StructField.Name
 }
 func (field *safeField) PkgPath() string {
 	return field.StructField.PkgPath
 }
 func (field *safeField) Type() Type {
 	panic("not implemented")
 }
 func (field *safeField) Tag() reflect.StructTag {
 	return field.StructField.Tag
 }
 func (field *safeField) Index() []int {
 	return field.StructField.Index
 }
 func (field *safeField) Anonymous() bool {
 	return field.StructField.Anonymous
 }
 func (field *safeField) Set(obj interface{}, value interface{}) {
 	val := reflect.ValueOf(obj).Elem()
 	val.FieldByIndex(field.Index()).Set(reflect.ValueOf(value).Elem())
 }
 func (field *safeField) UnsafeSet(obj unsafe.Pointer, value unsafe.Pointer) {
 	panic("unsafe operation is not supported")
 }
 func (field *safeField) Get(obj interface{}) interface{} {
 	val := reflect.ValueOf(obj).Elem().FieldByIndex(field.Index())
 	ptr := reflect.New(val.Type())
 	ptr.Elem().Set(val)
 	return ptr.Interface()
 }
 func (field *safeField) UnsafeGet(obj unsafe.Pointer) unsafe.Pointer {
 	panic("does not support unsafe operation")
 }
--- a/vendor/github.com/modern-go/reflect2/safe_map.go
+++ b/vendor/github.com/modern-go/reflect2/safe_map.go
@ -0,0 +1,101 @@
 package reflect2
 import (
 	"reflect"
 	"unsafe"
 )
 type safeMapType struct {
 	safeType
 }
 func (type2 *safeMapType) Key() Type {
 	return type2.safeType.cfg.Type2(type2.Type.Key())
 }
 func (type2 *safeMapType) MakeMap(cap int) interface{} {
 	ptr := reflect.New(type2.Type)
 	ptr.Elem().Set(reflect.MakeMap(type2.Type))
 	return ptr.Interface()
 }
 func (type2 *safeMapType) UnsafeMakeMap(cap int) unsafe.Pointer {
 	panic("does not support unsafe operation")
 }
 func (type2 *safeMapType) SetIndex(obj interface{}, key interface{}, elem interface{}) {
 	keyVal := reflect.ValueOf(key)
 	elemVal := reflect.ValueOf(elem)
 	val := reflect.ValueOf(obj)
 	val.Elem().SetMapIndex(keyVal.Elem(), elemVal.Elem())
 }
 func (type2 *safeMapType) UnsafeSetIndex(obj unsafe.Pointer, key unsafe.Pointer, elem unsafe.Pointer) {
 	panic("does not support unsafe operation")
 }
 func (type2 *safeMapType) TryGetIndex(obj interface{}, key interface{}) (interface{}, bool) {
 	keyVal := reflect.ValueOf(key)
 	if key == nil {
 		keyVal = reflect.New(type2.Type.Key()).Elem()
 	}
 	val := reflect.ValueOf(obj).MapIndex(keyVal)
 	if !val.IsValid() {
 		return nil, false
 	}
 	return val.Interface(), true
 }
 func (type2 *safeMapType) GetIndex(obj interface{}, key interface{}) interface{} {
 	val := reflect.ValueOf(obj).Elem()
 	keyVal := reflect.ValueOf(key).Elem()
 	elemVal := val.MapIndex(keyVal)
 	if !elemVal.IsValid() {
 		ptr := reflect.New(reflect.PtrTo(val.Type().Elem()))
 		return ptr.Elem().Interface()
 	}
 	ptr := reflect.New(elemVal.Type())
 	ptr.Elem().Set(elemVal)
 	return ptr.Interface()
 }
 func (type2 *safeMapType) UnsafeGetIndex(obj unsafe.Pointer, key unsafe.Pointer) unsafe.Pointer {
 	panic("does not support unsafe operation")
 }
 func (type2 *safeMapType) Iterate(obj interface{}) MapIterator {
 	m := reflect.ValueOf(obj).Elem()
 	return &safeMapIterator{
 		m:    m,
 		keys: m.MapKeys(),
 	}
 }
 func (type2 *safeMapType) UnsafeIterate(obj unsafe.Pointer) MapIterator {
 	panic("does not support unsafe operation")
 }
 type safeMapIterator struct {
 	i    int
 	m    reflect.Value
 	keys []reflect.Value
 }
 func (iter *safeMapIterator) HasNext() bool {
 	return iter.i != len(iter.keys)
 }
 func (iter *safeMapIterator) Next() (interface{}, interface{}) {
 	key := iter.keys[iter.i]
 	elem := iter.m.MapIndex(key)
 	iter.i += 1
 	keyPtr := reflect.New(key.Type())
 	keyPtr.Elem().Set(key)
 	elemPtr := reflect.New(elem.Type())
 	elemPtr.Elem().Set(elem)
 	return keyPtr.Interface(), elemPtr.Interface()
 }
 func (iter *safeMapIterator) UnsafeNext() (unsafe.Pointer, unsafe.Pointer) {
 	panic("does not support unsafe operation")
 }
--- a/vendor/github.com/modern-go/reflect2/safe_slice.go
+++ b/vendor/github.com/modern-go/reflect2/safe_slice.go
@ -0,0 +1,92 @@
 package reflect2
 import (
 	"reflect"
 	"unsafe"
 )
 type safeSliceType struct {
 	safeType
 }
 func (type2 *safeSliceType) SetIndex(obj interface{}, index int, value interface{}) {
 	val := reflect.ValueOf(obj).Elem()
 	elem := reflect.ValueOf(value).Elem()
 	val.Index(index).Set(elem)
 }
 func (type2 *safeSliceType) UnsafeSetIndex(obj unsafe.Pointer, index int, value unsafe.Pointer) {
 	panic("does not support unsafe operation")
 }
 func (type2 *safeSliceType) GetIndex(obj interface{}, index int) interface{} {
 	val := reflect.ValueOf(obj).Elem()
 	elem := val.Index(index)
 	ptr := reflect.New(elem.Type())
 	ptr.Elem().Set(elem)
 	return ptr.Interface()
 }
 func (type2 *safeSliceType) UnsafeGetIndex(obj unsafe.Pointer, index int) unsafe.Pointer {
 	panic("does not support unsafe operation")
 }
 func (type2 *safeSliceType) MakeSlice(length int, cap int) interface{} {
 	val := reflect.MakeSlice(type2.Type, length, cap)
 	ptr := reflect.New(val.Type())
 	ptr.Elem().Set(val)
 	return ptr.Interface()
 }
 func (type2 *safeSliceType) UnsafeMakeSlice(length int, cap int) unsafe.Pointer {
 	panic("does not support unsafe operation")
 }
 func (type2 *safeSliceType) Grow(obj interface{}, newLength int) {
 	oldCap := type2.Cap(obj)
 	oldSlice := reflect.ValueOf(obj).Elem()
 	delta := newLength - oldCap
 	deltaVals := make([]reflect.Value, delta)
 	newSlice := reflect.Append(oldSlice, deltaVals...)
 	oldSlice.Set(newSlice)
 }
 func (type2 *safeSliceType) UnsafeGrow(ptr unsafe.Pointer, newLength int) {
 	panic("does not support unsafe operation")
 }
 func (type2 *safeSliceType) Append(obj interface{}, elem interface{}) {
 	val := reflect.ValueOf(obj).Elem()
 	elemVal := reflect.ValueOf(elem).Elem()
 	newVal := reflect.Append(val, elemVal)
 	val.Set(newVal)
 }
 func (type2 *safeSliceType) UnsafeAppend(obj unsafe.Pointer, elem unsafe.Pointer) {
 	panic("does not support unsafe operation")
 }
 func (type2 *safeSliceType) SetNil(obj interface{}) {
 	val := reflect.ValueOf(obj).Elem()
 	val.Set(reflect.Zero(val.Type()))
 }
 func (type2 *safeSliceType) UnsafeSetNil(ptr unsafe.Pointer) {
 	panic("does not support unsafe operation")
 }
 func (type2 *safeSliceType) LengthOf(obj interface{}) int {
 	return reflect.ValueOf(obj).Elem().Len()
 }
 func (type2 *safeSliceType) UnsafeLengthOf(ptr unsafe.Pointer) int {
 	panic("does not support unsafe operation")
 }
 func (type2 *safeSliceType) Cap(obj interface{}) int {
 	return reflect.ValueOf(obj).Elem().Cap()
 }
 func (type2 *safeSliceType) UnsafeCap(ptr unsafe.Pointer) int {
 	panic("does not support unsafe operation")
 }
--- a/vendor/github.com/modern-go/reflect2/safe_struct.go
+++ b/vendor/github.com/modern-go/reflect2/safe_struct.go
@ -0,0 +1,29 @@
 package reflect2
 type safeStructType struct {
 	safeType
 }
 func (type2 *safeStructType) FieldByName(name string) StructField {
 	field, found := type2.Type.FieldByName(name)
 	if !found {
 		panic("field " + name + " not found")
 	}
 	return &safeField{StructField: field}
 }
 func (type2 *safeStructType) Field(i int) StructField {
 	return &safeField{StructField: type2.Type.Field(i)}
 }
 func (type2 *safeStructType) FieldByIndex(index []int) StructField {
 	return &safeField{StructField: type2.Type.FieldByIndex(index)}
 }
 func (type2 *safeStructType) FieldByNameFunc(match func(string) bool) StructField {
 	field, found := type2.Type.FieldByNameFunc(match)
 	if !found {
 		panic("field match condition not found in " + type2.Type.String())
 	}
 	return &safeField{StructField: field}
 }
--- a/vendor/github.com/modern-go/reflect2/safe_type.go
+++ b/vendor/github.com/modern-go/reflect2/safe_type.go
@ -0,0 +1,78 @@
 package reflect2
 import (
 	"reflect"
 	"unsafe"
 )
 type safeType struct {
 	reflect.Type
 	cfg *frozenConfig
 }
 func (type2 *safeType) New() interface{} {
 	return reflect.New(type2.Type).Interface()
 }
 func (type2 *safeType) UnsafeNew() unsafe.Pointer {
 	panic("does not support unsafe operation")
 }
 func (type2 *safeType) Elem() Type {
 	return type2.cfg.Type2(type2.Type.Elem())
 }
 func (type2 *safeType) Type1() reflect.Type {
 	return type2.Type
 }
 func (type2 *safeType) PackEFace(ptr unsafe.Pointer) interface{} {
 	panic("does not support unsafe operation")
 }
 func (type2 *safeType) Implements(thatType Type) bool {
 	return type2.Type.Implements(thatType.Type1())
 }
 func (type2 *safeType) RType() uintptr {
 	panic("does not support unsafe operation")
 }
 func (type2 *safeType) Indirect(obj interface{}) interface{} {
 	return reflect.Indirect(reflect.ValueOf(obj)).Interface()
 }
 func (type2 *safeType) UnsafeIndirect(ptr unsafe.Pointer) interface{} {
 	panic("does not support unsafe operation")
 }
 func (type2 *safeType) LikePtr() bool {
 	panic("does not support unsafe operation")
 }
 func (type2 *safeType) IsNullable() bool {
 	return IsNullable(type2.Kind())
 }
 func (type2 *safeType) IsNil(obj interface{}) bool {
 	if obj == nil {
 		return true
 	}
 	return reflect.ValueOf(obj).Elem().IsNil()
 }
 func (type2 *safeType) UnsafeIsNil(ptr unsafe.Pointer) bool {
 	panic("does not support unsafe operation")
 }
 func (type2 *safeType) Set(obj interface{}, val interface{}) {
 	reflect.ValueOf(obj).Elem().Set(reflect.ValueOf(val).Elem())
 }
 func (type2 *safeType) UnsafeSet(ptr unsafe.Pointer, val unsafe.Pointer) {
 	panic("does not support unsafe operation")
 }
 func (type2 *safeType) AssignableTo(anotherType Type) bool {
 	return type2.Type1().AssignableTo(anotherType.Type1())
 }
--- a/vendor/github.com/modern-go/reflect2/test.sh
+++ b/vendor/github.com/modern-go/reflect2/test.sh
@ -0,0 +1,12 @@
 #!/usr/bin/env bash
 set -e
 echo "" > coverage.txt
 for d in $(go list ./... | grep -v vendor); do
    go test -coverprofile=profile.out -coverpkg=github.com/modern-go/reflect2 $d
    if [ -f profile.out ]; then
        cat profile.out >> coverage.txt
        rm profile.out
    fi
 done
--- a/vendor/github.com/modern-go/reflect2/type_map.go
+++ b/vendor/github.com/modern-go/reflect2/type_map.go
@ -0,0 +1,103 @@
 package reflect2
 import (
 	"reflect"
 	"runtime"
 	"strings"
 	"unsafe"
 )
 // typelinks1 for 1.5 ~ 1.6
 //go:linkname typelinks1 reflect.typelinks
 func typelinks1() [][]unsafe.Pointer
 // typelinks2 for 1.7 ~
 //go:linkname typelinks2 reflect.typelinks
 func typelinks2() (sections []unsafe.Pointer, offset [][]int32)
 var types = map[string]reflect.Type{}
 var packages = map[string]map[string]reflect.Type{}
 func init() {
 	ver := runtime.Version()
 	if ver == "go1.5" || strings.HasPrefix(ver, "go1.5.") {
 		loadGo15Types()
 	} else if ver == "go1.6" || strings.HasPrefix(ver, "go1.6.") {
 		loadGo15Types()
 	} else {
 		loadGo17Types()
 	}
 }
 func loadGo15Types() {
 	var obj interface{} = reflect.TypeOf(0)
 	typePtrss := typelinks1()
 	for _, typePtrs := range typePtrss {
 		for _, typePtr := range typePtrs {
 			(*emptyInterface)(unsafe.Pointer(&obj)).word = typePtr
 			typ := obj.(reflect.Type)
 			if typ.Kind() == reflect.Ptr && typ.Elem().Kind() == reflect.Struct {
 				loadedType := typ.Elem()
 				pkgTypes := packages[loadedType.PkgPath()]
 				if pkgTypes == nil {
 					pkgTypes = map[string]reflect.Type{}
 					packages[loadedType.PkgPath()] = pkgTypes
 				}
 				types[loadedType.String()] = loadedType
 				pkgTypes[loadedType.Name()] = loadedType
 			}
 			if typ.Kind() == reflect.Slice && typ.Elem().Kind() == reflect.Ptr &&
 				typ.Elem().Elem().Kind() == reflect.Struct {
 				loadedType := typ.Elem().Elem()
 				pkgTypes := packages[loadedType.PkgPath()]
 				if pkgTypes == nil {
 					pkgTypes = map[string]reflect.Type{}
 					packages[loadedType.PkgPath()] = pkgTypes
 				}
 				types[loadedType.String()] = loadedType
 				pkgTypes[loadedType.Name()] = loadedType
 			}
 		}
 	}
 }
 func loadGo17Types() {
 	var obj interface{} = reflect.TypeOf(0)
 	sections, offset := typelinks2()
 	for i, offs := range offset {
 		rodata := sections[i]
 		for _, off := range offs {
 			(*emptyInterface)(unsafe.Pointer(&obj)).word = resolveTypeOff(unsafe.Pointer(rodata), off)
 			typ := obj.(reflect.Type)
 			if typ.Kind() == reflect.Ptr && typ.Elem().Kind() == reflect.Struct {
 				loadedType := typ.Elem()
 				pkgTypes := packages[loadedType.PkgPath()]
 				if pkgTypes == nil {
 					pkgTypes = map[string]reflect.Type{}
 					packages[loadedType.PkgPath()] = pkgTypes
 				}
 				types[loadedType.String()] = loadedType
 				pkgTypes[loadedType.Name()] = loadedType
 			}
 		}
 	}
 }
 type emptyInterface struct {
 	typ  unsafe.Pointer
 	word unsafe.Pointer
 }
 // TypeByName return the type by its name, just like Class.forName in java
 func TypeByName(typeName string) Type {
 	return Type2(types[typeName])
 }
 // TypeByPackageName return the type by its package and name
 func TypeByPackageName(pkgPath string, name string) Type {
 	pkgTypes := packages[pkgPath]
 	if pkgTypes == nil {
 		return nil
 	}
 	return Type2(pkgTypes[name])
 }
--- a/vendor/github.com/modern-go/reflect2/unsafe_array.go
+++ b/vendor/github.com/modern-go/reflect2/unsafe_array.go
@ -0,0 +1,65 @@
 package reflect2
 import (
 	"reflect"
 	"unsafe"
 )
 type UnsafeArrayType struct {
 	unsafeType
 	elemRType  unsafe.Pointer
 	pElemRType unsafe.Pointer
 	elemSize   uintptr
 	likePtr    bool
 }
 func newUnsafeArrayType(cfg *frozenConfig, type1 reflect.Type) *UnsafeArrayType {
 	return &UnsafeArrayType{
 		unsafeType: *newUnsafeType(cfg, type1),
 		elemRType:  unpackEFace(type1.Elem()).data,
 		pElemRType: unpackEFace(reflect.PtrTo(type1.Elem())).data,
 		elemSize:   type1.Elem().Size(),
 		likePtr:    likePtrType(type1),
 	}
 }
 func (type2 *UnsafeArrayType) LikePtr() bool {
 	return type2.likePtr
 }
 func (type2 *UnsafeArrayType) Indirect(obj interface{}) interface{} {
 	objEFace := unpackEFace(obj)
 	assertType("Type.Indirect argument 1", type2.ptrRType, objEFace.rtype)
 	return type2.UnsafeIndirect(objEFace.data)
 }
 func (type2 *UnsafeArrayType) UnsafeIndirect(ptr unsafe.Pointer) interface{} {
 	if type2.likePtr {
 		return packEFace(type2.rtype, *(*unsafe.Pointer)(ptr))
 	}
 	return packEFace(type2.rtype, ptr)
 }
 func (type2 *UnsafeArrayType) SetIndex(obj interface{}, index int, elem interface{}) {
 	objEFace := unpackEFace(obj)
 	assertType("ArrayType.SetIndex argument 1", type2.ptrRType, objEFace.rtype)
 	elemEFace := unpackEFace(elem)
 	assertType("ArrayType.SetIndex argument 3", type2.pElemRType, elemEFace.rtype)
 	type2.UnsafeSetIndex(objEFace.data, index, elemEFace.data)
 }
 func (type2 *UnsafeArrayType) UnsafeSetIndex(obj unsafe.Pointer, index int, elem unsafe.Pointer) {
 	elemPtr := arrayAt(obj, index, type2.elemSize, "i < s.Len")
 	typedmemmove(type2.elemRType, elemPtr, elem)
 }
 func (type2 *UnsafeArrayType) GetIndex(obj interface{}, index int) interface{} {
 	objEFace := unpackEFace(obj)
 	assertType("ArrayType.GetIndex argument 1", type2.ptrRType, objEFace.rtype)
 	elemPtr := type2.UnsafeGetIndex(objEFace.data, index)
 	return packEFace(type2.pElemRType, elemPtr)
 }
 func (type2 *UnsafeArrayType) UnsafeGetIndex(obj unsafe.Pointer, index int) unsafe.Pointer {
 	return arrayAt(obj, index, type2.elemSize, "i < s.Len")
 }
--- a/vendor/github.com/modern-go/reflect2/unsafe_eface.go
+++ b/vendor/github.com/modern-go/reflect2/unsafe_eface.go
@ -0,0 +1,59 @@
 package reflect2
 import (
 	"reflect"
 	"unsafe"
 )
 type eface struct {
 	rtype unsafe.Pointer
 	data  unsafe.Pointer
 }
 func unpackEFace(obj interface{}) *eface {
 	return (*eface)(unsafe.Pointer(&obj))
 }
 func packEFace(rtype unsafe.Pointer, data unsafe.Pointer) interface{} {
 	var i interface{}
 	e := (*eface)(unsafe.Pointer(&i))
 	e.rtype = rtype
 	e.data = data
 	return i
 }
 type UnsafeEFaceType struct {
 	unsafeType
 }
 func newUnsafeEFaceType(cfg *frozenConfig, type1 reflect.Type) *UnsafeEFaceType {
 	return &UnsafeEFaceType{
 		unsafeType: *newUnsafeType(cfg, type1),
 	}
 }
 func (type2 *UnsafeEFaceType) IsNil(obj interface{}) bool {
 	if obj == nil {
 		return true
 	}
 	objEFace := unpackEFace(obj)
 	assertType("Type.IsNil argument 1", type2.ptrRType, objEFace.rtype)
 	return type2.UnsafeIsNil(objEFace.data)
 }
 func (type2 *UnsafeEFaceType) UnsafeIsNil(ptr unsafe.Pointer) bool {
 	if ptr == nil {
 		return true
 	}
 	return unpackEFace(*(*interface{})(ptr)).data == nil
 }
 func (type2 *UnsafeEFaceType) Indirect(obj interface{}) interface{} {
 	objEFace := unpackEFace(obj)
 	assertType("Type.Indirect argument 1", type2.ptrRType, objEFace.rtype)
 	return type2.UnsafeIndirect(objEFace.data)
 }
 func (type2 *UnsafeEFaceType) UnsafeIndirect(ptr unsafe.Pointer) interface{} {
 	return *(*interface{})(ptr)
 }
--- a/vendor/github.com/modern-go/reflect2/unsafe_field.go
+++ b/vendor/github.com/modern-go/reflect2/unsafe_field.go
@ -0,0 +1,74 @@
 package reflect2
 import (
 	"reflect"
 	"unsafe"
 )
 type UnsafeStructField struct {
 	reflect.StructField
 	structType *UnsafeStructType
 	rtype      unsafe.Pointer
 	ptrRType   unsafe.Pointer
 }
 func newUnsafeStructField(structType *UnsafeStructType, structField reflect.StructField) *UnsafeStructField {
 	return &UnsafeStructField{
 		StructField: structField,
 		rtype:       unpackEFace(structField.Type).data,
 		ptrRType:    unpackEFace(reflect.PtrTo(structField.Type)).data,
 		structType:  structType,
 	}
 }
 func (field *UnsafeStructField) Offset() uintptr {
 	return field.StructField.Offset
 }
 func (field *UnsafeStructField) Name() string {
 	return field.StructField.Name
 }
 func (field *UnsafeStructField) PkgPath() string {
 	return field.StructField.PkgPath
 }
 func (field *UnsafeStructField) Type() Type {
 	return field.structType.cfg.Type2(field.StructField.Type)
 }
 func (field *UnsafeStructField) Tag() reflect.StructTag {
 	return field.StructField.Tag
 }
 func (field *UnsafeStructField) Index() []int {
 	return field.StructField.Index
 }
 func (field *UnsafeStructField) Anonymous() bool {
 	return field.StructField.Anonymous
 }
 func (field *UnsafeStructField) Set(obj interface{}, value interface{}) {
 	objEFace := unpackEFace(obj)
 	assertType("StructField.SetIndex argument 1", field.structType.ptrRType, objEFace.rtype)
 	valueEFace := unpackEFace(value)
 	assertType("StructField.SetIndex argument 2", field.ptrRType, valueEFace.rtype)
 	field.UnsafeSet(objEFace.data, valueEFace.data)
 }
 func (field *UnsafeStructField) UnsafeSet(obj unsafe.Pointer, value unsafe.Pointer) {
 	fieldPtr := add(obj, field.StructField.Offset, "same as non-reflect &v.field")
 	typedmemmove(field.rtype, fieldPtr, value)
 }
 func (field *UnsafeStructField) Get(obj interface{}) interface{} {
 	objEFace := unpackEFace(obj)
 	assertType("StructField.GetIndex argument 1", field.structType.ptrRType, objEFace.rtype)
 	value := field.UnsafeGet(objEFace.data)
 	return packEFace(field.ptrRType, value)
 }
 func (field *UnsafeStructField) UnsafeGet(obj unsafe.Pointer) unsafe.Pointer {
 	return add(obj, field.StructField.Offset, "same as non-reflect &v.field")
 }
--- a/vendor/github.com/modern-go/reflect2/unsafe_iface.go
+++ b/vendor/github.com/modern-go/reflect2/unsafe_iface.go
@ -0,0 +1,64 @@
 package reflect2
 import (
 	"reflect"
 	"unsafe"
 )
 type iface struct {
 	itab *itab
 	data unsafe.Pointer
 }
 type itab struct {
 	ignore unsafe.Pointer
 	rtype  unsafe.Pointer
 }
 func IFaceToEFace(ptr unsafe.Pointer) interface{} {
 	iface := (*iface)(ptr)
 	if iface.itab == nil {
 		return nil
 	}
 	return packEFace(iface.itab.rtype, iface.data)
 }
 type UnsafeIFaceType struct {
 	unsafeType
 }
 func newUnsafeIFaceType(cfg *frozenConfig, type1 reflect.Type) *UnsafeIFaceType {
 	return &UnsafeIFaceType{
 		unsafeType: *newUnsafeType(cfg, type1),
 	}
 }
 func (type2 *UnsafeIFaceType) Indirect(obj interface{}) interface{} {
 	objEFace := unpackEFace(obj)
 	assertType("Type.Indirect argument 1", type2.ptrRType, objEFace.rtype)
 	return type2.UnsafeIndirect(objEFace.data)
 }
 func (type2 *UnsafeIFaceType) UnsafeIndirect(ptr unsafe.Pointer) interface{} {
 	return IFaceToEFace(ptr)
 }
 func (type2 *UnsafeIFaceType) IsNil(obj interface{}) bool {
 	if obj == nil {
 		return true
 	}
 	objEFace := unpackEFace(obj)
 	assertType("Type.IsNil argument 1", type2.ptrRType, objEFace.rtype)
 	return type2.UnsafeIsNil(objEFace.data)
 }
 func (type2 *UnsafeIFaceType) UnsafeIsNil(ptr unsafe.Pointer) bool {
 	if ptr == nil {
 		return true
 	}
 	iface := (*iface)(ptr)
 	if iface.itab == nil {
 		return true
 	}
 	return false
 }
--- a/vendor/github.com/modern-go/reflect2/unsafe_link.go
+++ b/vendor/github.com/modern-go/reflect2/unsafe_link.go
@ -0,0 +1,70 @@
 package reflect2
 import "unsafe"
 //go:linkname unsafe_New reflect.unsafe_New
 func unsafe_New(rtype unsafe.Pointer) unsafe.Pointer
 //go:linkname typedmemmove reflect.typedmemmove
 func typedmemmove(rtype unsafe.Pointer, dst, src unsafe.Pointer)
 //go:linkname unsafe_NewArray reflect.unsafe_NewArray
 func unsafe_NewArray(rtype unsafe.Pointer, length int) unsafe.Pointer
 // typedslicecopy copies a slice of elemType values from src to dst,
 // returning the number of elements copied.
 //go:linkname typedslicecopy reflect.typedslicecopy
 //go:noescape
 func typedslicecopy(elemType unsafe.Pointer, dst, src sliceHeader) int
 //go:linkname mapassign reflect.mapassign
 //go:noescape
 func mapassign(rtype unsafe.Pointer, m unsafe.Pointer, key, val unsafe.Pointer)
 //go:linkname mapaccess reflect.mapaccess
 //go:noescape
 func mapaccess(rtype unsafe.Pointer, m unsafe.Pointer, key unsafe.Pointer) (val unsafe.Pointer)
 // m escapes into the return value, but the caller of mapiterinit
 // doesn't let the return value escape.
 //go:noescape
 //go:linkname mapiterinit reflect.mapiterinit
 func mapiterinit(rtype unsafe.Pointer, m unsafe.Pointer) *hiter
 //go:noescape
 //go:linkname mapiternext reflect.mapiternext
 func mapiternext(it *hiter)
 //go:linkname ifaceE2I reflect.ifaceE2I
 func ifaceE2I(rtype unsafe.Pointer, src interface{}, dst unsafe.Pointer)
 // A hash iteration structure.
 // If you modify hiter, also change cmd/internal/gc/reflect.go to indicate
 // the layout of this structure.
 type hiter struct {
 	key   unsafe.Pointer // Must be in first position.  Write nil to indicate iteration end (see cmd/internal/gc/range.go).
 	value unsafe.Pointer // Must be in second position (see cmd/internal/gc/range.go).
 	// rest fields are ignored
 }
 // add returns p+x.
 //
 // The whySafe string is ignored, so that the function still inlines
 // as efficiently as p+x, but all call sites should use the string to
 // record why the addition is safe, which is to say why the addition
 // does not cause x to advance to the very end of p's allocation
 // and therefore point incorrectly at the next block in memory.
 func add(p unsafe.Pointer, x uintptr, whySafe string) unsafe.Pointer {
 	return unsafe.Pointer(uintptr(p) + x)
 }
 // arrayAt returns the i-th element of p,
 // an array whose elements are eltSize bytes wide.
 // The array pointed at by p must have at least i+1 elements:
 // it is invalid (but impossible to check here) to pass i >= len,
 // because then the result will point outside the array.
 // whySafe must explain why i < len. (Passing "i < len" is fine;
 // the benefit is to surface this assumption at the call site.)
 func arrayAt(p unsafe.Pointer, i int, eltSize uintptr, whySafe string) unsafe.Pointer {
 	return add(p, uintptr(i)*eltSize, "i < len")
 }
--- a/vendor/github.com/modern-go/reflect2/unsafe_map.go
+++ b/vendor/github.com/modern-go/reflect2/unsafe_map.go
@ -0,0 +1,138 @@
 package reflect2
 import (
 	"reflect"
 	"unsafe"
 )
 type UnsafeMapType struct {
 	unsafeType
 	pKeyRType  unsafe.Pointer
 	pElemRType unsafe.Pointer
 }
 func newUnsafeMapType(cfg *frozenConfig, type1 reflect.Type) MapType {
 	return &UnsafeMapType{
 		unsafeType: *newUnsafeType(cfg, type1),
 		pKeyRType:  unpackEFace(reflect.PtrTo(type1.Key())).data,
 		pElemRType: unpackEFace(reflect.PtrTo(type1.Elem())).data,
 	}
 }
 func (type2 *UnsafeMapType) IsNil(obj interface{}) bool {
 	if obj == nil {
 		return true
 	}
 	objEFace := unpackEFace(obj)
 	assertType("Type.IsNil argument 1", type2.ptrRType, objEFace.rtype)
 	return type2.UnsafeIsNil(objEFace.data)
 }
 func (type2 *UnsafeMapType) UnsafeIsNil(ptr unsafe.Pointer) bool {
 	if ptr == nil {
 		return true
 	}
 	return *(*unsafe.Pointer)(ptr) == nil
 }
 func (type2 *UnsafeMapType) LikePtr() bool {
 	return true
 }
 func (type2 *UnsafeMapType) Indirect(obj interface{}) interface{} {
 	objEFace := unpackEFace(obj)
 	assertType("MapType.Indirect argument 1", type2.ptrRType, objEFace.rtype)
 	return type2.UnsafeIndirect(objEFace.data)
 }
 func (type2 *UnsafeMapType) UnsafeIndirect(ptr unsafe.Pointer) interface{} {
 	return packEFace(type2.rtype, *(*unsafe.Pointer)(ptr))
 }
 func (type2 *UnsafeMapType) Key() Type {
 	return type2.cfg.Type2(type2.Type.Key())
 }
 func (type2 *UnsafeMapType) MakeMap(cap int) interface{} {
 	return packEFace(type2.ptrRType, type2.UnsafeMakeMap(cap))
 }
 func (type2 *UnsafeMapType) UnsafeMakeMap(cap int) unsafe.Pointer {
 	m := makeMapWithSize(type2.rtype, cap)
 	return unsafe.Pointer(&m)
 }
 func (type2 *UnsafeMapType) SetIndex(obj interface{}, key interface{}, elem interface{}) {
 	objEFace := unpackEFace(obj)
 	assertType("MapType.SetIndex argument 1", type2.ptrRType, objEFace.rtype)
 	keyEFace := unpackEFace(key)
 	assertType("MapType.SetIndex argument 2", type2.pKeyRType, keyEFace.rtype)
 	elemEFace := unpackEFace(elem)
 	assertType("MapType.SetIndex argument 3", type2.pElemRType, elemEFace.rtype)
 	type2.UnsafeSetIndex(objEFace.data, keyEFace.data, elemEFace.data)
 }
 func (type2 *UnsafeMapType) UnsafeSetIndex(obj unsafe.Pointer, key unsafe.Pointer, elem unsafe.Pointer) {
 	mapassign(type2.rtype, *(*unsafe.Pointer)(obj), key, elem)
 }
 func (type2 *UnsafeMapType) TryGetIndex(obj interface{}, key interface{}) (interface{}, bool) {
 	objEFace := unpackEFace(obj)
 	assertType("MapType.TryGetIndex argument 1", type2.ptrRType, objEFace.rtype)
 	keyEFace := unpackEFace(key)
 	assertType("MapType.TryGetIndex argument 2", type2.pKeyRType, keyEFace.rtype)
 	elemPtr := type2.UnsafeGetIndex(objEFace.data, keyEFace.data)
 	if elemPtr == nil {
 		return nil, false
 	}
 	return packEFace(type2.pElemRType, elemPtr), true
 }
 func (type2 *UnsafeMapType) GetIndex(obj interface{}, key interface{}) interface{} {
 	objEFace := unpackEFace(obj)
 	assertType("MapType.GetIndex argument 1", type2.ptrRType, objEFace.rtype)
 	keyEFace := unpackEFace(key)
 	assertType("MapType.GetIndex argument 2", type2.pKeyRType, keyEFace.rtype)
 	elemPtr := type2.UnsafeGetIndex(objEFace.data, keyEFace.data)
 	return packEFace(type2.pElemRType, elemPtr)
 }
 func (type2 *UnsafeMapType) UnsafeGetIndex(obj unsafe.Pointer, key unsafe.Pointer) unsafe.Pointer {
 	return mapaccess(type2.rtype, *(*unsafe.Pointer)(obj), key)
 }
 func (type2 *UnsafeMapType) Iterate(obj interface{}) MapIterator {
 	objEFace := unpackEFace(obj)
 	assertType("MapType.Iterate argument 1", type2.ptrRType, objEFace.rtype)
 	return type2.UnsafeIterate(objEFace.data)
 }
 func (type2 *UnsafeMapType) UnsafeIterate(obj unsafe.Pointer) MapIterator {
 	return &UnsafeMapIterator{
 		hiter:      mapiterinit(type2.rtype, *(*unsafe.Pointer)(obj)),
 		pKeyRType:  type2.pKeyRType,
 		pElemRType: type2.pElemRType,
 	}
 }
 type UnsafeMapIterator struct {
 	*hiter
 	pKeyRType  unsafe.Pointer
 	pElemRType unsafe.Pointer
 }
 func (iter *UnsafeMapIterator) HasNext() bool {
 	return iter.key != nil
 }
 func (iter *UnsafeMapIterator) Next() (interface{}, interface{}) {
 	key, elem := iter.UnsafeNext()
 	return packEFace(iter.pKeyRType, key), packEFace(iter.pElemRType, elem)
 }
 func (iter *UnsafeMapIterator) UnsafeNext() (unsafe.Pointer, unsafe.Pointer) {
 	key := iter.key
 	elem := iter.value
 	mapiternext(iter.hiter)
 	return key, elem
 }
--- a/vendor/github.com/modern-go/reflect2/unsafe_ptr.go
+++ b/vendor/github.com/modern-go/reflect2/unsafe_ptr.go
@ -0,0 +1,46 @@
 package reflect2
 import (
 	"reflect"
 	"unsafe"
 )
 type UnsafePtrType struct {
 	unsafeType
 }
 func newUnsafePtrType(cfg *frozenConfig, type1 reflect.Type) *UnsafePtrType {
 	return &UnsafePtrType{
 		unsafeType: *newUnsafeType(cfg, type1),
 	}
 }
 func (type2 *UnsafePtrType) IsNil(obj interface{}) bool {
 	if obj == nil {
 		return true
 	}
 	objEFace := unpackEFace(obj)
 	assertType("Type.IsNil argument 1", type2.ptrRType, objEFace.rtype)
 	return type2.UnsafeIsNil(objEFace.data)
 }
 func (type2 *UnsafePtrType) UnsafeIsNil(ptr unsafe.Pointer) bool {
 	if ptr == nil {
 		return true
 	}
 	return *(*unsafe.Pointer)(ptr) == nil
 }
 func (type2 *UnsafePtrType) LikePtr() bool {
 	return true
 }
 func (type2 *UnsafePtrType) Indirect(obj interface{}) interface{} {
 	objEFace := unpackEFace(obj)
 	assertType("Type.Indirect argument 1", type2.ptrRType, objEFace.rtype)
 	return type2.UnsafeIndirect(objEFace.data)
 }
 func (type2 *UnsafePtrType) UnsafeIndirect(ptr unsafe.Pointer) interface{} {
 	return packEFace(type2.rtype, *(*unsafe.Pointer)(ptr))
 }
--- a/vendor/github.com/modern-go/reflect2/unsafe_slice.go
+++ b/vendor/github.com/modern-go/reflect2/unsafe_slice.go
@ -0,0 +1,177 @@
 package reflect2
 import (
 	"reflect"
 	"unsafe"
 )
 // sliceHeader is a safe version of SliceHeader used within this package.
 type sliceHeader struct {
 	Data unsafe.Pointer
 	Len  int
 	Cap  int
 }
 type UnsafeSliceType struct {
 	unsafeType
 	elemRType  unsafe.Pointer
 	pElemRType unsafe.Pointer
 	elemSize   uintptr
 }
 func newUnsafeSliceType(cfg *frozenConfig, type1 reflect.Type) SliceType {
 	elemType := type1.Elem()
 	return &UnsafeSliceType{
 		unsafeType: *newUnsafeType(cfg, type1),
 		pElemRType: unpackEFace(reflect.PtrTo(elemType)).data,
 		elemRType:  unpackEFace(elemType).data,
 		elemSize:   elemType.Size(),
 	}
 }
 func (type2 *UnsafeSliceType) Set(obj interface{}, val interface{}) {
 	objEFace := unpackEFace(obj)
 	assertType("Type.Set argument 1", type2.ptrRType, objEFace.rtype)
 	valEFace := unpackEFace(val)
 	assertType("Type.Set argument 2", type2.ptrRType, valEFace.rtype)
 	type2.UnsafeSet(objEFace.data, valEFace.data)
 }
 func (type2 *UnsafeSliceType) UnsafeSet(ptr unsafe.Pointer, val unsafe.Pointer) {
 	*(*sliceHeader)(ptr) = *(*sliceHeader)(val)
 }
 func (type2 *UnsafeSliceType) IsNil(obj interface{}) bool {
 	if obj == nil {
 		return true
 	}
 	objEFace := unpackEFace(obj)
 	assertType("Type.IsNil argument 1", type2.ptrRType, objEFace.rtype)
 	return type2.UnsafeIsNil(objEFace.data)
 }
 func (type2 *UnsafeSliceType) UnsafeIsNil(ptr unsafe.Pointer) bool {
 	if ptr == nil {
 		return true
 	}
 	return (*sliceHeader)(ptr).Data == nil
 }
 func (type2 *UnsafeSliceType) SetNil(obj interface{}) {
 	objEFace := unpackEFace(obj)
 	assertType("SliceType.SetNil argument 1", type2.ptrRType, objEFace.rtype)
 	type2.UnsafeSetNil(objEFace.data)
 }
 func (type2 *UnsafeSliceType) UnsafeSetNil(ptr unsafe.Pointer) {
 	header := (*sliceHeader)(ptr)
 	header.Len = 0
 	header.Cap = 0
 	header.Data = nil
 }
 func (type2 *UnsafeSliceType) MakeSlice(length int, cap int) interface{} {
 	return packEFace(type2.ptrRType, type2.UnsafeMakeSlice(length, cap))
 }
 func (type2 *UnsafeSliceType) UnsafeMakeSlice(length int, cap int) unsafe.Pointer {
 	header := &sliceHeader{unsafe_NewArray(type2.elemRType, cap), length, cap}
 	return unsafe.Pointer(header)
 }
 func (type2 *UnsafeSliceType) LengthOf(obj interface{}) int {
 	objEFace := unpackEFace(obj)
 	assertType("SliceType.Len argument 1", type2.ptrRType, objEFace.rtype)
 	return type2.UnsafeLengthOf(objEFace.data)
 }
 func (type2 *UnsafeSliceType) UnsafeLengthOf(obj unsafe.Pointer) int {
 	header := (*sliceHeader)(obj)
 	return header.Len
 }
 func (type2 *UnsafeSliceType) SetIndex(obj interface{}, index int, elem interface{}) {
 	objEFace := unpackEFace(obj)
 	assertType("SliceType.SetIndex argument 1", type2.ptrRType, objEFace.rtype)
 	elemEFace := unpackEFace(elem)
 	assertType("SliceType.SetIndex argument 3", type2.pElemRType, elemEFace.rtype)
 	type2.UnsafeSetIndex(objEFace.data, index, elemEFace.data)
 }
 func (type2 *UnsafeSliceType) UnsafeSetIndex(obj unsafe.Pointer, index int, elem unsafe.Pointer) {
 	header := (*sliceHeader)(obj)
 	elemPtr := arrayAt(header.Data, index, type2.elemSize, "i < s.Len")
 	typedmemmove(type2.elemRType, elemPtr, elem)
 }
 func (type2 *UnsafeSliceType) GetIndex(obj interface{}, index int) interface{} {
 	objEFace := unpackEFace(obj)
 	assertType("SliceType.GetIndex argument 1", type2.ptrRType, objEFace.rtype)
 	elemPtr := type2.UnsafeGetIndex(objEFace.data, index)
 	return packEFace(type2.pElemRType, elemPtr)
 }
 func (type2 *UnsafeSliceType) UnsafeGetIndex(obj unsafe.Pointer, index int) unsafe.Pointer {
 	header := (*sliceHeader)(obj)
 	return arrayAt(header.Data, index, type2.elemSize, "i < s.Len")
 }
 func (type2 *UnsafeSliceType) Append(obj interface{}, elem interface{}) {
 	objEFace := unpackEFace(obj)
 	assertType("SliceType.Append argument 1", type2.ptrRType, objEFace.rtype)
 	elemEFace := unpackEFace(elem)
 	assertType("SliceType.Append argument 2", type2.pElemRType, elemEFace.rtype)
 	type2.UnsafeAppend(objEFace.data, elemEFace.data)
 }
 func (type2 *UnsafeSliceType) UnsafeAppend(obj unsafe.Pointer, elem unsafe.Pointer) {
 	header := (*sliceHeader)(obj)
 	oldLen := header.Len
 	type2.UnsafeGrow(obj, oldLen+1)
 	type2.UnsafeSetIndex(obj, oldLen, elem)
 }
 func (type2 *UnsafeSliceType) Cap(obj interface{}) int {
 	objEFace := unpackEFace(obj)
 	assertType("SliceType.Cap argument 1", type2.ptrRType, objEFace.rtype)
 	return type2.UnsafeCap(objEFace.data)
 }
 func (type2 *UnsafeSliceType) UnsafeCap(ptr unsafe.Pointer) int {
 	return (*sliceHeader)(ptr).Cap
 }
 func (type2 *UnsafeSliceType) Grow(obj interface{}, newLength int) {
 	objEFace := unpackEFace(obj)
 	assertType("SliceType.Grow argument 1", type2.ptrRType, objEFace.rtype)
 	type2.UnsafeGrow(objEFace.data, newLength)
 }
 func (type2 *UnsafeSliceType) UnsafeGrow(obj unsafe.Pointer, newLength int) {
 	header := (*sliceHeader)(obj)
 	if newLength <= header.Cap {
 		header.Len = newLength
 		return
 	}
 	newCap := calcNewCap(header.Cap, newLength)
 	newHeader := (*sliceHeader)(type2.UnsafeMakeSlice(header.Len, newCap))
 	typedslicecopy(type2.elemRType, *newHeader, *header)
 	header.Data = newHeader.Data
 	header.Cap = newHeader.Cap
 	header.Len = newLength
 }
 func calcNewCap(cap int, expectedCap int) int {
 	if cap == 0 {
 		cap = expectedCap
 	} else {
 		for cap < expectedCap {
 			if cap < 1024 {
 				cap += cap
 			} else {
 				cap += cap / 4
 			}
 		}
 	}
 	return cap
 }
--- a/vendor/github.com/modern-go/reflect2/unsafe_struct.go
+++ b/vendor/github.com/modern-go/reflect2/unsafe_struct.go
@ -0,0 +1,59 @@
 package reflect2
 import (
 	"reflect"
 	"unsafe"
 )
 type UnsafeStructType struct {
 	unsafeType
 	likePtr bool
 }
 func newUnsafeStructType(cfg *frozenConfig, type1 reflect.Type) *UnsafeStructType {
 	return &UnsafeStructType{
 		unsafeType: *newUnsafeType(cfg, type1),
 		likePtr:    likePtrType(type1),
 	}
 }
 func (type2 *UnsafeStructType) LikePtr() bool {
 	return type2.likePtr
 }
 func (type2 *UnsafeStructType) Indirect(obj interface{}) interface{} {
 	objEFace := unpackEFace(obj)
 	assertType("Type.Indirect argument 1", type2.ptrRType, objEFace.rtype)
 	return type2.UnsafeIndirect(objEFace.data)
 }
 func (type2 *UnsafeStructType) UnsafeIndirect(ptr unsafe.Pointer) interface{} {
 	if type2.likePtr {
 		return packEFace(type2.rtype, *(*unsafe.Pointer)(ptr))
 	}
 	return packEFace(type2.rtype, ptr)
 }
 func (type2 *UnsafeStructType) FieldByName(name string) StructField {
 	structField, found := type2.Type.FieldByName(name)
 	if !found {
 		return nil
 	}
 	return newUnsafeStructField(type2, structField)
 }
 func (type2 *UnsafeStructType) Field(i int) StructField {
 	return newUnsafeStructField(type2, type2.Type.Field(i))
 }
 func (type2 *UnsafeStructType) FieldByIndex(index []int) StructField {
 	return newUnsafeStructField(type2, type2.Type.FieldByIndex(index))
 }
 func (type2 *UnsafeStructType) FieldByNameFunc(match func(string) bool) StructField {
 	structField, found := type2.Type.FieldByNameFunc(match)
 	if !found {
 		panic("field match condition not found in " + type2.Type.String())
 	}
 	return newUnsafeStructField(type2, structField)
 }
--- a/vendor/github.com/modern-go/reflect2/unsafe_type.go
+++ b/vendor/github.com/modern-go/reflect2/unsafe_type.go
@ -0,0 +1,85 @@
 package reflect2
 import (
 	"reflect"
 	"unsafe"
 )
 type unsafeType struct {
 	safeType
 	rtype    unsafe.Pointer
 	ptrRType unsafe.Pointer
 }
 func newUnsafeType(cfg *frozenConfig, type1 reflect.Type) *unsafeType {
 	return &unsafeType{
 		safeType: safeType{
 			Type: type1,
 			cfg:  cfg,
 		},
 		rtype:    unpackEFace(type1).data,
 		ptrRType: unpackEFace(reflect.PtrTo(type1)).data,
 	}
 }
 func (type2 *unsafeType) Set(obj interface{}, val interface{}) {
 	objEFace := unpackEFace(obj)
 	assertType("Type.Set argument 1", type2.ptrRType, objEFace.rtype)
 	valEFace := unpackEFace(val)
 	assertType("Type.Set argument 2", type2.ptrRType, valEFace.rtype)
 	type2.UnsafeSet(objEFace.data, valEFace.data)
 }
 func (type2 *unsafeType) UnsafeSet(ptr unsafe.Pointer, val unsafe.Pointer) {
 	typedmemmove(type2.rtype, ptr, val)
 }
 func (type2 *unsafeType) IsNil(obj interface{}) bool {
 	objEFace := unpackEFace(obj)
 	assertType("Type.IsNil argument 1", type2.ptrRType, objEFace.rtype)
 	return type2.UnsafeIsNil(objEFace.data)
 }
 func (type2 *unsafeType) UnsafeIsNil(ptr unsafe.Pointer) bool {
 	return ptr == nil
 }
 func (type2 *unsafeType) UnsafeNew() unsafe.Pointer {
 	return unsafe_New(type2.rtype)
 }
 func (type2 *unsafeType) New() interface{} {
 	return packEFace(type2.ptrRType, type2.UnsafeNew())
 }
 func (type2 *unsafeType) PackEFace(ptr unsafe.Pointer) interface{} {
 	return packEFace(type2.ptrRType, ptr)
 }
 func (type2 *unsafeType) RType() uintptr {
 	return uintptr(type2.rtype)
 }
 func (type2 *unsafeType) Indirect(obj interface{}) interface{} {
 	objEFace := unpackEFace(obj)
 	assertType("Type.Indirect argument 1", type2.ptrRType, objEFace.rtype)
 	return type2.UnsafeIndirect(objEFace.data)
 }
 func (type2 *unsafeType) UnsafeIndirect(obj unsafe.Pointer) interface{} {
 	return packEFace(type2.rtype, obj)
 }
 func (type2 *unsafeType) LikePtr() bool {
 	return false
 }
 func assertType(where string, expectRType unsafe.Pointer, actualRType unsafe.Pointer) {
 	if expectRType != actualRType {
 		expectType := reflect.TypeOf(0)
 		(*iface)(unsafe.Pointer(&expectType)).data = expectRType
 		actualType := reflect.TypeOf(0)
 		(*iface)(unsafe.Pointer(&actualType)).data = actualRType
 		panic(where + ": expect " + expectType.String() + ", actual " + actualType.String())
 	}
 }
--- a/vendor/vendor.json
+++ b/vendor/vendor.json
@ -302,6 +302,18 @@
 			"revision": "f77f16ffc87a6a58814e64ae72d55f9c41374e6d",
 			"revisionTime": "2016-10-12T08:37:05Z"
 		},
 		{
 			"checksumSHA1": "ZTcgWKWHsrX0RXYVXn5Xeb8Q0go=",
 			"path": "github.com/modern-go/concurrent",
 			"revision": "bacd9c7ef1dd9b15be4a9909b8ac7a4e313eec94",
 			"revisionTime": "2018-03-06T01:26:44Z"
 		},
 		{
 			"checksumSHA1": "ntSr6NgBxGzQG1fgkl5IFgdjCLo=",
 			"path": "github.com/modern-go/reflect2",
 			"revision": "58118c1ea9161250907268a484af4dd6ed314280",
 			"revisionTime": "2018-05-11T05:30:14Z"
 		},
 		{
 			"checksumSHA1": "lfOuMiAdiqc/dalUSBTvD5ZMSzA=",
 			"path": "github.com/msteinert/pam",