Vendor Buildah 1.10.1

As the title says, vendor Buildah v1.10.1

Signed-off-by: TomSweeneyRedHat <tsweeney@redhat.com>

10 files changed, 2418 insertions, 0 deletions

diff --git a/vendor/github.com/pquerna/ffjson/inception/decoder.go b/vendor/github.com/pquerna/ffjson/inception/decoder.go
new file mode 100644
index 000000000..908347a32
--- /dev/null
+++ b/vendor/github.com/pquerna/ffjson/inception/decoder.go
@@ -0,0 +1,323 @@
+/**
+ *  Copyright 2014 Paul Querna
+ *
+ *  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.
+ *
+ */
+
+package ffjsoninception
+
+import (
+	"fmt"
+	"reflect"
+	"strings"
+
+	"github.com/pquerna/ffjson/shared"
+)
+
+var validValues []string = []string{
+	"FFTok_left_brace",
+	"FFTok_left_bracket",
+	"FFTok_integer",
+	"FFTok_double",
+	"FFTok_string",
+	"FFTok_bool",
+	"FFTok_null",
+}
+
+func CreateUnmarshalJSON(ic *Inception, si *StructInfo) error {
+	out := ""
+	ic.OutputImports[`fflib "github.com/pquerna/ffjson/fflib/v1"`] = true
+	if len(si.Fields) > 0 {
+		ic.OutputImports[`"bytes"`] = true
+	}
+	ic.OutputImports[`"fmt"`] = true
+
+	out += tplStr(decodeTpl["header"], header{
+		IC: ic,
+		SI: si,
+	})
+
+	out += tplStr(decodeTpl["ujFunc"], ujFunc{
+		SI:          si,
+		IC:          ic,
+		ValidValues: validValues,
+		ResetFields: ic.ResetFields,
+	})
+
+	ic.OutputFuncs = append(ic.OutputFuncs, out)
+
+	return nil
+}
+
+func handleField(ic *Inception, name string, typ reflect.Type, ptr bool, quoted bool) string {
+	return handleFieldAddr(ic, name, false, typ, ptr, quoted)
+}
+
+func handleFieldAddr(ic *Inception, name string, takeAddr bool, typ reflect.Type, ptr bool, quoted bool) string {
+	out := fmt.Sprintf("/* handler: %s type=%v kind=%v quoted=%t*/\n", name, typ, typ.Kind(), quoted)
+
+	umlx := typ.Implements(unmarshalFasterType) || typeInInception(ic, typ, shared.MustDecoder)
+	umlx = umlx || reflect.PtrTo(typ).Implements(unmarshalFasterType)
+
+	umlstd := typ.Implements(unmarshalerType) || reflect.PtrTo(typ).Implements(unmarshalerType)
+
+	out += tplStr(decodeTpl["handleUnmarshaler"], handleUnmarshaler{
+		IC:                   ic,
+		Name:                 name,
+		Typ:                  typ,
+		Ptr:                  reflect.Ptr,
+		TakeAddr:             takeAddr || ptr,
+		UnmarshalJSONFFLexer: umlx,
+		Unmarshaler:          umlstd,
+	})
+
+	if umlx || umlstd {
+		return out
+	}
+
+	// TODO(pquerna): generic handling of token type mismatching struct type
+	switch typ.Kind() {
+	case reflect.Int,
+		reflect.Int8,
+		reflect.Int16,
+		reflect.Int32,
+		reflect.Int64:
+
+		allowed := buildTokens(quoted, "FFTok_string", "FFTok_integer", "FFTok_null")
+		out += getAllowTokens(typ.Name(), allowed...)
+
+		out += getNumberHandler(ic, name, takeAddr || ptr, typ, "ParseInt")
+
+	case reflect.Uint,
+		reflect.Uint8,
+		reflect.Uint16,
+		reflect.Uint32,
+		reflect.Uint64:
+
+		allowed := buildTokens(quoted, "FFTok_string", "FFTok_integer", "FFTok_null")
+		out += getAllowTokens(typ.Name(), allowed...)
+
+		out += getNumberHandler(ic, name, takeAddr || ptr, typ, "ParseUint")
+
+	case reflect.Float32,
+		reflect.Float64:
+
+		allowed := buildTokens(quoted, "FFTok_string", "FFTok_double", "FFTok_integer", "FFTok_null")
+		out += getAllowTokens(typ.Name(), allowed...)
+
+		out += getNumberHandler(ic, name, takeAddr || ptr, typ, "ParseFloat")
+
+	case reflect.Bool:
+		ic.OutputImports[`"bytes"`] = true
+		ic.OutputImports[`"errors"`] = true
+
+		allowed := buildTokens(quoted, "FFTok_string", "FFTok_bool", "FFTok_null")
+		out += getAllowTokens(typ.Name(), allowed...)
+
+		out += tplStr(decodeTpl["handleBool"], handleBool{
+			Name:     name,
+			Typ:      typ,
+			TakeAddr: takeAddr || ptr,
+		})
+
+	case reflect.Ptr:
+		out += tplStr(decodeTpl["handlePtr"], handlePtr{
+			IC:     ic,
+			Name:   name,
+			Typ:    typ,
+			Quoted: quoted,
+		})
+
+	case reflect.Array,
+		reflect.Slice:
+		out += getArrayHandler(ic, name, typ, ptr)
+
+	case reflect.String:
+		// Is it a json.Number?
+		if typ.PkgPath() == "encoding/json" && typ.Name() == "Number" {
+			// Fall back to json package to rely on the valid number check.
+			// See: https://github.com/golang/go/blob/f05c3aa24d815cd3869153750c9875e35fc48a6e/src/encoding/json/decode.go#L897
+			ic.OutputImports[`"encoding/json"`] = true
+			out += tplStr(decodeTpl["handleFallback"], handleFallback{
+				Name: name,
+				Typ:  typ,
+				Kind: typ.Kind(),
+			})
+		} else {
+			out += tplStr(decodeTpl["handleString"], handleString{
+				IC:       ic,
+				Name:     name,
+				Typ:      typ,
+				TakeAddr: takeAddr || ptr,
+				Quoted:   quoted,
+			})
+		}
+	case reflect.Interface:
+		ic.OutputImports[`"encoding/json"`] = true
+		out += tplStr(decodeTpl["handleFallback"], handleFallback{
+			Name: name,
+			Typ:  typ,
+			Kind: typ.Kind(),
+		})
+	case reflect.Map:
+		out += tplStr(decodeTpl["handleObject"], handleObject{
+			IC:       ic,
+			Name:     name,
+			Typ:      typ,
+			Ptr:      reflect.Ptr,
+			TakeAddr: takeAddr || ptr,
+		})
+	default:
+		ic.OutputImports[`"encoding/json"`] = true
+		out += tplStr(decodeTpl["handleFallback"], handleFallback{
+			Name: name,
+			Typ:  typ,
+			Kind: typ.Kind(),
+		})
+	}
+
+	return out
+}
+
+func getArrayHandler(ic *Inception, name string, typ reflect.Type, ptr bool) string {
+	if typ.Kind() == reflect.Slice && typ.Elem().Kind() == reflect.Uint8 {
+		ic.OutputImports[`"encoding/base64"`] = true
+		useReflectToSet := false
+		if typ.Elem().Name() != "byte" {
+			ic.OutputImports[`"reflect"`] = true
+			useReflectToSet = true
+		}
+
+		return tplStr(decodeTpl["handleByteSlice"], handleArray{
+			IC:              ic,
+			Name:            name,
+			Typ:             typ,
+			Ptr:             reflect.Ptr,
+			UseReflectToSet: useReflectToSet,
+		})
+	}
+
+	if typ.Elem().Kind() == reflect.Struct && typ.Elem().Name() != "" {
+		goto sliceOrArray
+	}
+
+	if (typ.Elem().Kind() == reflect.Struct || typ.Elem().Kind() == reflect.Map) ||
+		typ.Elem().Kind() == reflect.Array || typ.Elem().Kind() == reflect.Slice &&
+		typ.Elem().Name() == "" {
+		ic.OutputImports[`"encoding/json"`] = true
+
+		return tplStr(decodeTpl["handleFallback"], handleFallback{
+			Name: name,
+			Typ:  typ,
+			Kind: typ.Kind(),
+		})
+	}
+
+sliceOrArray:
+
+	if typ.Kind() == reflect.Array {
+		return tplStr(decodeTpl["handleArray"], handleArray{
+			IC:    ic,
+			Name:  name,
+			Typ:   typ,
+			IsPtr: ptr,
+			Ptr:   reflect.Ptr,
+		})
+	}
+
+	return tplStr(decodeTpl["handleSlice"], handleArray{
+		IC:    ic,
+		Name:  name,
+		Typ:   typ,
+		IsPtr: ptr,
+		Ptr:   reflect.Ptr,
+	})
+}
+
+func getAllowTokens(name string, tokens ...string) string {
+	return tplStr(decodeTpl["allowTokens"], allowTokens{
+		Name:   name,
+		Tokens: tokens,
+	})
+}
+
+func getNumberHandler(ic *Inception, name string, takeAddr bool, typ reflect.Type, parsefunc string) string {
+	return tplStr(decodeTpl["handlerNumeric"], handlerNumeric{
+		IC:        ic,
+		Name:      name,
+		ParseFunc: parsefunc,
+		TakeAddr:  takeAddr,
+		Typ:       typ,
+	})
+}
+
+func getNumberSize(typ reflect.Type) string {
+	return fmt.Sprintf("%d", typ.Bits())
+}
+
+func getType(ic *Inception, name string, typ reflect.Type) string {
+	s := typ.Name()
+
+	if typ.PkgPath() != "" && typ.PkgPath() != ic.PackagePath {
+		path := removeVendor(typ.PkgPath())
+		ic.OutputImports[`"`+path+`"`] = true
+		s = typ.String()
+	}
+
+	if s == "" {
+		return typ.String()
+	}
+
+	return s
+}
+
+// removeVendor removes everything before and including a '/vendor/'
+// substring in the package path.
+// This is needed becuase that full path can't be used in the
+// import statement.
+func removeVendor(path string) string {
+	i := strings.Index(path, "/vendor/")
+	if i == -1 {
+		return path
+	}
+	return path[i+8:]
+}
+
+func buildTokens(containsOptional bool, optional string, required ...string) []string {
+	if containsOptional {
+		return append(required, optional)
+	}
+
+	return required
+}
+
+func unquoteField(quoted bool) string {
+	// The outer quote of a string is already stripped out by
+	// the lexer. We need to check if the inner string is also
+	// quoted. If so, we will decode it as json string. If decoding
+	// fails, we will use the original string
+	if quoted {
+		return `
+		unquoted, ok := fflib.UnquoteBytes(outBuf)
+		if ok {
+			outBuf = unquoted
+		}
+		`
+	}
+	return ""
+}
+
+func getTmpVarFor(name string) string {
+	return "tmp" + strings.Replace(strings.Title(name), ".", "", -1)
+}
diff --git a/vendor/github.com/pquerna/ffjson/inception/decoder_tpl.go b/vendor/github.com/pquerna/ffjson/inception/decoder_tpl.go
new file mode 100644
index 000000000..098506122
--- /dev/null
+++ b/vendor/github.com/pquerna/ffjson/inception/decoder_tpl.go
@@ -0,0 +1,773 @@
+/**
+ *  Copyright 2014 Paul Querna
+ *
+ *  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.
+ *
+ */
+
+package ffjsoninception
+
+import (
+	"reflect"
+	"strconv"
+	"text/template"
+)
+
+var decodeTpl map[string]*template.Template
+
+func init() {
+	decodeTpl = make(map[string]*template.Template)
+
+	funcs := map[string]string{
+		"handlerNumeric":    handlerNumericTxt,
+		"allowTokens":       allowTokensTxt,
+		"handleFallback":    handleFallbackTxt,
+		"handleString":      handleStringTxt,
+		"handleObject":      handleObjectTxt,
+		"handleArray":       handleArrayTxt,
+		"handleSlice":       handleSliceTxt,
+		"handleByteSlice":   handleByteSliceTxt,
+		"handleBool":        handleBoolTxt,
+		"handlePtr":         handlePtrTxt,
+		"header":            headerTxt,
+		"ujFunc":            ujFuncTxt,
+		"handleUnmarshaler": handleUnmarshalerTxt,
+	}
+
+	tplFuncs := template.FuncMap{
+		"getAllowTokens":  getAllowTokens,
+		"getNumberSize":   getNumberSize,
+		"getType":         getType,
+		"handleField":     handleField,
+		"handleFieldAddr": handleFieldAddr,
+		"unquoteField":    unquoteField,
+		"getTmpVarFor":    getTmpVarFor,
+	}
+
+	for k, v := range funcs {
+		decodeTpl[k] = template.Must(template.New(k).Funcs(tplFuncs).Parse(v))
+	}
+}
+
+type handlerNumeric struct {
+	IC        *Inception
+	Name      string
+	ParseFunc string
+	Typ       reflect.Type
+	TakeAddr  bool
+}
+
+var handlerNumericTxt = `
+{
+	{{$ic := .IC}}
+
+	if tok == fflib.FFTok_null {
+		{{if eq .TakeAddr true}}
+		{{.Name}} = nil
+		{{end}}
+	} else {
+		{{if eq .ParseFunc "ParseFloat" }}
+		tval, err := fflib.{{ .ParseFunc}}(fs.Output.Bytes(), {{getNumberSize .Typ}})
+		{{else}}
+		tval, err := fflib.{{ .ParseFunc}}(fs.Output.Bytes(), 10, {{getNumberSize .Typ}})
+		{{end}}
+
+		if err != nil {
+			return fs.WrapErr(err)
+		}
+		{{if eq .TakeAddr true}}
+		ttypval := {{getType $ic .Name .Typ}}(tval)
+		{{.Name}} = &ttypval
+		{{else}}
+		{{.Name}} = {{getType $ic .Name .Typ}}(tval)
+		{{end}}
+	}
+}
+`
+
+type allowTokens struct {
+	Name   string
+	Tokens []string
+}
+
+var allowTokensTxt = `
+{
+	if {{range $index, $element := .Tokens}}{{if ne $index 0 }}&&{{end}} tok != fflib.{{$element}}{{end}} {
+		return fs.WrapErr(fmt.Errorf("cannot unmarshal %s into Go value for {{.Name}}", tok))
+	}
+}
+`
+
+type handleFallback struct {
+	Name string
+	Typ  reflect.Type
+	Kind reflect.Kind
+}
+
+var handleFallbackTxt = `
+{
+	/* Falling back. type={{printf "%v" .Typ}} kind={{printf "%v" .Kind}} */
+	tbuf, err := fs.CaptureField(tok)
+	if err != nil {
+		return fs.WrapErr(err)
+	}
+
+	err = json.Unmarshal(tbuf, &{{.Name}})
+	if err != nil {
+		return fs.WrapErr(err)
+	}
+}
+`
+
+type handleString struct {
+	IC       *Inception
+	Name     string
+	Typ      reflect.Type
+	TakeAddr bool
+	Quoted   bool
+}
+
+var handleStringTxt = `
+{
+	{{$ic := .IC}}
+
+	{{getAllowTokens .Typ.Name "FFTok_string" "FFTok_null"}}
+	if tok == fflib.FFTok_null {
+	{{if eq .TakeAddr true}}
+		{{.Name}} = nil
+	{{end}}
+	} else {
+	{{if eq .TakeAddr true}}
+		var tval {{getType $ic .Name .Typ}}
+		outBuf := fs.Output.Bytes()
+		{{unquoteField .Quoted}}
+		tval = {{getType $ic .Name .Typ}}(string(outBuf))
+		{{.Name}} = &tval
+	{{else}}
+		outBuf := fs.Output.Bytes()
+		{{unquoteField .Quoted}}
+		{{.Name}} = {{getType $ic .Name .Typ}}(string(outBuf))
+	{{end}}
+	}
+}
+`
+
+type handleObject struct {
+	IC       *Inception
+	Name     string
+	Typ      reflect.Type
+	Ptr      reflect.Kind
+	TakeAddr bool
+}
+
+var handleObjectTxt = `
+{
+	{{$ic := .IC}}
+	{{getAllowTokens .Typ.Name "FFTok_left_bracket" "FFTok_null"}}
+	if tok == fflib.FFTok_null {
+		{{.Name}} = nil
+	} else {
+
+		{{if eq .TakeAddr true}}
+			{{if eq .Typ.Elem.Kind .Ptr }}
+				{{if eq .Typ.Key.Kind .Ptr }}
+				var tval = make(map[*{{getType $ic .Name .Typ.Key.Elem}}]*{{getType $ic .Name .Typ.Elem.Elem}}, 0)
+				{{else}}
+				var tval = make(map[{{getType $ic .Name .Typ.Key}}]*{{getType $ic .Name .Typ.Elem.Elem}}, 0)
+				{{end}}
+			{{else}}
+				{{if eq .Typ.Key.Kind .Ptr }}
+				var tval = make(map[*{{getType $ic .Name .Typ.Key.Elem}}]{{getType $ic .Name .Typ.Elem}}, 0)
+				{{else}}
+				var tval = make(map[{{getType $ic .Name .Typ.Key}}]{{getType $ic .Name .Typ.Elem}}, 0)
+				{{end}}
+			{{end}}
+		{{else}}
+			{{if eq .Typ.Elem.Kind .Ptr }}
+				{{if eq .Typ.Key.Kind .Ptr }}
+				{{.Name}} = make(map[*{{getType $ic .Name .Typ.Key.Elem}}]*{{getType $ic .Name .Typ.Elem.Elem}}, 0)
+				{{else}}
+				{{.Name}} = make(map[{{getType $ic .Name .Typ.Key}}]*{{getType $ic .Name .Typ.Elem.Elem}}, 0)
+				{{end}}
+			{{else}}
+				{{if eq .Typ.Key.Kind .Ptr }}
+				{{.Name}} = make(map[*{{getType $ic .Name .Typ.Key.Elem}}]{{getType $ic .Name .Typ.Elem}}, 0)
+				{{else}}
+				{{.Name}} = make(map[{{getType $ic .Name .Typ.Key}}]{{getType $ic .Name .Typ.Elem}}, 0)
+				{{end}}
+			{{end}}
+		{{end}}
+
+		wantVal := true
+
+		for {
+		{{$keyPtr := false}}
+		{{if eq .Typ.Key.Kind .Ptr }}
+			{{$keyPtr := true}}
+			var k *{{getType $ic .Name .Typ.Key.Elem}}
+		{{else}}
+			var k {{getType $ic .Name .Typ.Key}}
+		{{end}}
+
+		{{$valPtr := false}}
+		{{$tmpVar := getTmpVarFor .Name}}
+		{{if eq .Typ.Elem.Kind .Ptr }}
+			{{$valPtr := true}}
+			var {{$tmpVar}} *{{getType $ic .Name .Typ.Elem.Elem}}
+		{{else}}
+			var {{$tmpVar}} {{getType $ic .Name .Typ.Elem}}
+		{{end}}
+
+			tok = fs.Scan()
+			if tok == fflib.FFTok_error {
+				goto tokerror
+			}
+			if tok == fflib.FFTok_right_bracket {
+				break
+			}
+
+			if tok == fflib.FFTok_comma {
+				if wantVal == true {
+					// TODO(pquerna): this isn't an ideal error message, this handles
+					// things like [,,,] as an array value.
+					return fs.WrapErr(fmt.Errorf("wanted value token, but got token: %v", tok))
+				}
+				continue
+			} else {
+				wantVal = true
+			}
+
+			{{handleField .IC "k" .Typ.Key $keyPtr false}}
+
+			// Expect ':' after key
+			tok = fs.Scan()
+			if tok != fflib.FFTok_colon {
+				return fs.WrapErr(fmt.Errorf("wanted colon token, but got token: %v", tok))
+			}
+
+			tok = fs.Scan()
+			{{handleField .IC $tmpVar .Typ.Elem $valPtr false}}
+
+			{{if eq .TakeAddr true}}
+			tval[k] = {{$tmpVar}}
+			{{else}}
+			{{.Name}}[k] = {{$tmpVar}}
+			{{end}}
+			wantVal = false
+		}
+
+		{{if eq .TakeAddr true}}
+		{{.Name}} = &tval
+		{{end}}
+	}
+}
+`
+
+type handleArray struct {
+	IC              *Inception
+	Name            string
+	Typ             reflect.Type
+	Ptr             reflect.Kind
+	UseReflectToSet bool
+	IsPtr           bool
+}
+
+var handleArrayTxt = `
+{
+	{{$ic := .IC}}
+	{{getAllowTokens .Typ.Name "FFTok_left_brace" "FFTok_null"}}
+	{{if eq .Typ.Elem.Kind .Ptr}}
+		{{.Name}} = [{{.Typ.Len}}]*{{getType $ic .Name .Typ.Elem.Elem}}{}
+	{{else}}
+		{{.Name}} = [{{.Typ.Len}}]{{getType $ic .Name .Typ.Elem}}{}
+	{{end}}
+	if tok != fflib.FFTok_null {
+		wantVal := true
+
+		idx := 0
+		for {
+			{{$ptr := false}}
+			{{$tmpVar := getTmpVarFor .Name}}
+			{{if eq .Typ.Elem.Kind .Ptr }}
+				{{$ptr := true}}
+				var {{$tmpVar}} *{{getType $ic .Name .Typ.Elem.Elem}}
+			{{else}}
+				var {{$tmpVar}} {{getType $ic .Name .Typ.Elem}}
+			{{end}}
+
+			tok = fs.Scan()
+			if tok == fflib.FFTok_error {
+				goto tokerror
+			}
+			if tok == fflib.FFTok_right_brace {
+				break
+			}
+
+			if tok == fflib.FFTok_comma {
+				if wantVal == true {
+					// TODO(pquerna): this isn't an ideal error message, this handles
+					// things like [,,,] as an array value.
+					return fs.WrapErr(fmt.Errorf("wanted value token, but got token: %v", tok))
+				}
+				continue
+			} else {
+				wantVal = true
+			}
+
+			{{handleField .IC $tmpVar .Typ.Elem $ptr false}}
+
+			// Standard json.Unmarshal ignores elements out of array bounds,
+			// that what we do as well.
+			if idx < {{.Typ.Len}} {
+				{{.Name}}[idx] = {{$tmpVar}}
+				idx++
+			}
+
+			wantVal = false
+		}
+	}
+}
+`
+
+var handleSliceTxt = `
+{
+	{{$ic := .IC}}
+	{{getAllowTokens .Typ.Name "FFTok_left_brace" "FFTok_null"}}
+	if tok == fflib.FFTok_null {
+		{{.Name}} = nil
+	} else {
+		{{if eq .Typ.Elem.Kind .Ptr }}
+			{{if eq .IsPtr true}}
+				{{.Name}} = &[]*{{getType $ic .Name .Typ.Elem.Elem}}{}
+			{{else}}
+				{{.Name}} = []*{{getType $ic .Name .Typ.Elem.Elem}}{}
+			{{end}}
+		{{else}}
+			{{if eq .IsPtr true}}
+				{{.Name}} = &[]{{getType $ic .Name .Typ.Elem}}{}
+			{{else}}
+				{{.Name}} = []{{getType $ic .Name .Typ.Elem}}{}
+			{{end}}
+		{{end}}
+
+		wantVal := true
+
+		for {
+			{{$ptr := false}}
+			{{$tmpVar := getTmpVarFor .Name}}
+			{{if eq .Typ.Elem.Kind .Ptr }}
+				{{$ptr := true}}
+				var {{$tmpVar}} *{{getType $ic .Name .Typ.Elem.Elem}}
+			{{else}}
+				var {{$tmpVar}} {{getType $ic .Name .Typ.Elem}}
+			{{end}}
+
+			tok = fs.Scan()
+			if tok == fflib.FFTok_error {
+				goto tokerror
+			}
+			if tok == fflib.FFTok_right_brace {
+				break
+			}
+
+			if tok == fflib.FFTok_comma {
+				if wantVal == true {
+					// TODO(pquerna): this isn't an ideal error message, this handles
+					// things like [,,,] as an array value.
+					return fs.WrapErr(fmt.Errorf("wanted value token, but got token: %v", tok))
+				}
+				continue
+			} else {
+				wantVal = true
+			}
+
+			{{handleField .IC $tmpVar .Typ.Elem $ptr false}}
+			{{if eq .IsPtr true}}
+				*{{.Name}} = append(*{{.Name}}, {{$tmpVar}})
+			{{else}}
+				{{.Name}} = append({{.Name}}, {{$tmpVar}})
+			{{end}}
+			wantVal = false
+		}
+	}
+}
+`
+
+var handleByteSliceTxt = `
+{
+	{{getAllowTokens .Typ.Name "FFTok_string" "FFTok_null"}}
+	if tok == fflib.FFTok_null {
+		{{.Name}} = nil
+	} else {
+		b := make([]byte, base64.StdEncoding.DecodedLen(fs.Output.Len()))
+		n, err := base64.StdEncoding.Decode(b, fs.Output.Bytes())
+		if err != nil {
+			return fs.WrapErr(err)
+		}
+		{{if eq .UseReflectToSet true}}
+			v := reflect.ValueOf(&{{.Name}}).Elem()
+			v.SetBytes(b[0:n])
+		{{else}}
+			{{.Name}} = append([]byte(), b[0:n]...)
+		{{end}}
+	}
+}
+`
+
+type handleBool struct {
+	Name     string
+	Typ      reflect.Type
+	TakeAddr bool
+}
+
+var handleBoolTxt = `
+{
+	if tok == fflib.FFTok_null {
+		{{if eq .TakeAddr true}}
+		{{.Name}} = nil
+		{{end}}
+	} else {
+		tmpb := fs.Output.Bytes()
+
+		{{if eq .TakeAddr true}}
+		var tval bool
+		{{end}}
+
+		if bytes.Compare([]byte{'t', 'r', 'u', 'e'}, tmpb) == 0 {
+		{{if eq .TakeAddr true}}
+			tval = true
+		{{else}}
+			{{.Name}} = true
+		{{end}}
+		} else if bytes.Compare([]byte{'f', 'a', 'l', 's', 'e'}, tmpb) == 0 {
+		{{if eq .TakeAddr true}}
+			tval = false
+		{{else}}
+			{{.Name}} = false
+		{{end}}
+		} else {
+			err = errors.New("unexpected bytes for true/false value")
+			return fs.WrapErr(err)
+		}
+
+		{{if eq .TakeAddr true}}
+		{{.Name}} = &tval
+		{{end}}
+	}
+}
+`
+
+type handlePtr struct {
+	IC     *Inception
+	Name   string
+	Typ    reflect.Type
+	Quoted bool
+}
+
+var handlePtrTxt = `
+{
+	{{$ic := .IC}}
+
+	if tok == fflib.FFTok_null {
+		{{.Name}} = nil
+	} else {
+		if {{.Name}} == nil {
+			{{.Name}} = new({{getType $ic .Typ.Elem.Name .Typ.Elem}})
+		}
+
+		{{handleFieldAddr .IC .Name true .Typ.Elem false .Quoted}}
+	}
+}
+`
+
+type header struct {
+	IC *Inception
+	SI *StructInfo
+}
+
+var headerTxt = `
+const (
+	ffjt{{.SI.Name}}base = iota
+	ffjt{{.SI.Name}}nosuchkey
+	{{with $si := .SI}}
+		{{range $index, $field := $si.Fields}}
+			{{if ne $field.JsonName "-"}}
+		ffjt{{$si.Name}}{{$field.Name}}
+			{{end}}
+		{{end}}
+	{{end}}
+)
+
+{{with $si := .SI}}
+	{{range $index, $field := $si.Fields}}
+		{{if ne $field.JsonName "-"}}
+var ffjKey{{$si.Name}}{{$field.Name}} = []byte({{$field.JsonName}})
+		{{end}}
+	{{end}}
+{{end}}
+
+`
+
+type ujFunc struct {
+	IC          *Inception
+	SI          *StructInfo
+	ValidValues []string
+	ResetFields bool
+}
+
+var ujFuncTxt = `
+{{$si := .SI}}
+{{$ic := .IC}}
+
+// UnmarshalJSON umarshall json - template of ffjson
+func (j *{{.SI.Name}}) UnmarshalJSON(input []byte) error {
+    fs := fflib.NewFFLexer(input)
+    return j.UnmarshalJSONFFLexer(fs, fflib.FFParse_map_start)
+}
+
+// UnmarshalJSONFFLexer fast json unmarshall - template ffjson
+func (j *{{.SI.Name}}) UnmarshalJSONFFLexer(fs *fflib.FFLexer, state fflib.FFParseState) error {
+	var err error
+	currentKey := ffjt{{.SI.Name}}base
+	_ = currentKey
+	tok := fflib.FFTok_init
+	wantedTok := fflib.FFTok_init
+
+				{{if eq .ResetFields true}}
+				{{range $index, $field := $si.Fields}}
+				var ffjSet{{$si.Name}}{{$field.Name}} = false
+ 				{{end}}
+				{{end}}
+
+mainparse:
+	for {
+		tok = fs.Scan()
+		//	println(fmt.Sprintf("debug: tok: %v  state: %v", tok, state))
+		if tok == fflib.FFTok_error {
+			goto tokerror
+		}
+
+		switch state {
+
+		case fflib.FFParse_map_start:
+			if tok != fflib.FFTok_left_bracket {
+				wantedTok = fflib.FFTok_left_bracket
+				goto wrongtokenerror
+			}
+			state = fflib.FFParse_want_key
+			continue
+
+		case fflib.FFParse_after_value:
+			if tok == fflib.FFTok_comma {
+				state = fflib.FFParse_want_key
+			} else if tok == fflib.FFTok_right_bracket {
+				goto done
+			} else {
+				wantedTok = fflib.FFTok_comma
+				goto wrongtokenerror
+			}
+
+		case fflib.FFParse_want_key:
+			// json {} ended. goto exit. woo.
+			if tok == fflib.FFTok_right_bracket {
+				goto done
+			}
+			if tok != fflib.FFTok_string {
+				wantedTok = fflib.FFTok_string
+				goto wrongtokenerror
+			}
+
+			kn := fs.Output.Bytes()
+			if len(kn) <= 0 {
+				// "" case. hrm.
+				currentKey = ffjt{{.SI.Name}}nosuchkey
+				state = fflib.FFParse_want_colon
+				goto mainparse
+			} else {
+				switch kn[0] {
+				{{range $byte, $fields := $si.FieldsByFirstByte}}
+				case '{{$byte}}':
+					{{range $index, $field := $fields}}
+						{{if ne $index 0 }}} else if {{else}}if {{end}} bytes.Equal(ffjKey{{$si.Name}}{{$field.Name}}, kn) {
+						currentKey = ffjt{{$si.Name}}{{$field.Name}}
+						state = fflib.FFParse_want_colon
+						goto mainparse
+					{{end}} }
+				{{end}}
+				}
+				{{range $index, $field := $si.ReverseFields}}
+				if {{$field.FoldFuncName}}(ffjKey{{$si.Name}}{{$field.Name}}, kn) {
+					currentKey = ffjt{{$si.Name}}{{$field.Name}}
+					state = fflib.FFParse_want_colon
+					goto mainparse
+				}
+				{{end}}
+				currentKey = ffjt{{.SI.Name}}nosuchkey
+				state = fflib.FFParse_want_colon
+				goto mainparse
+			}
+
+		case fflib.FFParse_want_colon:
+			if tok != fflib.FFTok_colon {
+				wantedTok = fflib.FFTok_colon
+				goto wrongtokenerror
+			}
+			state = fflib.FFParse_want_value
+			continue
+		case fflib.FFParse_want_value:
+
+			if {{range $index, $v := .ValidValues}}{{if ne $index 0 }}||{{end}}tok == fflib.{{$v}}{{end}} {
+				switch currentKey {
+				{{range $index, $field := $si.Fields}}
+				case ffjt{{$si.Name}}{{$field.Name}}:
+					goto handle_{{$field.Name}}
+				{{end}}
+				case ffjt{{$si.Name}}nosuchkey:
+					err = fs.SkipField(tok)
+					if err != nil {
+						return fs.WrapErr(err)
+					}
+					state = fflib.FFParse_after_value
+					goto mainparse
+				}
+			} else {
+				goto wantedvalue
+			}
+		}
+	}
+{{range $index, $field := $si.Fields}}
+handle_{{$field.Name}}:
+	{{with $fieldName := $field.Name | printf "j.%s"}}
+		{{handleField $ic $fieldName $field.Typ $field.Pointer $field.ForceString}}
+		{{if eq $.ResetFields true}}
+		ffjSet{{$si.Name}}{{$field.Name}} = true
+		{{end}}
+		state = fflib.FFParse_after_value
+		goto mainparse
+	{{end}}
+{{end}}
+
+wantedvalue:
+	return fs.WrapErr(fmt.Errorf("wanted value token, but got token: %v", tok))
+wrongtokenerror:
+	return fs.WrapErr(fmt.Errorf("ffjson: wanted token: %v, but got token: %v output=%s", wantedTok, tok, fs.Output.String()))
+tokerror:
+	if fs.BigError != nil {
+		return fs.WrapErr(fs.BigError)
+	}
+	err = fs.Error.ToError()
+	if err != nil {
+		return fs.WrapErr(err)
+	}
+	panic("ffjson-generated: unreachable, please report bug.")
+done:
+{{if eq .ResetFields true}}
+{{range $index, $field := $si.Fields}}
+	if !ffjSet{{$si.Name}}{{$field.Name}} {
+	{{with $fieldName := $field.Name | printf "j.%s"}}
+	{{if eq $field.Pointer true}}
+		{{$fieldName}} = nil
+	{{else if eq $field.Typ.Kind ` + strconv.FormatUint(uint64(reflect.Interface), 10) + `}}
+		{{$fieldName}} = nil
+	{{else if eq $field.Typ.Kind ` + strconv.FormatUint(uint64(reflect.Slice), 10) + `}}
+		{{$fieldName}} = nil
+	{{else if eq $field.Typ.Kind ` + strconv.FormatUint(uint64(reflect.Array), 10) + `}}
+		{{$fieldName}} = [{{$field.Typ.Len}}]{{getType $ic $fieldName $field.Typ.Elem}}{}
+	{{else if eq $field.Typ.Kind ` + strconv.FormatUint(uint64(reflect.Map), 10) + `}}
+		{{$fieldName}} = nil
+	{{else if eq $field.Typ.Kind ` + strconv.FormatUint(uint64(reflect.Bool), 10) + `}}
+		{{$fieldName}} = false
+	{{else if eq $field.Typ.Kind ` + strconv.FormatUint(uint64(reflect.String), 10) + `}}
+		{{$fieldName}} = ""
+	{{else if eq $field.Typ.Kind ` + strconv.FormatUint(uint64(reflect.Struct), 10) + `}}
+		{{$fieldName}} = {{getType $ic $fieldName $field.Typ}}{}
+	{{else}}
+		{{$fieldName}} = {{getType $ic $fieldName $field.Typ}}(0)
+	{{end}}
+	{{end}}
+	}
+{{end}}
+{{end}}
+	return nil
+}
+`
+
+type handleUnmarshaler struct {
+	IC                   *Inception
+	Name                 string
+	Typ                  reflect.Type
+	Ptr                  reflect.Kind
+	TakeAddr             bool
+	UnmarshalJSONFFLexer bool
+	Unmarshaler          bool
+}
+
+var handleUnmarshalerTxt = `
+	{{$ic := .IC}}
+
+	{{if eq .UnmarshalJSONFFLexer true}}
+	{
+		if tok == fflib.FFTok_null {
+				{{if eq .Typ.Kind .Ptr }}
+					{{.Name}} = nil
+				{{end}}
+				{{if eq .TakeAddr true }}
+					{{.Name}} = nil
+				{{end}}
+		} else {
+			{{if eq .Typ.Kind .Ptr }}
+				if {{.Name}} == nil {
+					{{.Name}} = new({{getType $ic .Typ.Elem.Name .Typ.Elem}})
+				}
+			{{end}}
+			{{if eq .TakeAddr true }}
+				if {{.Name}} == nil {
+					{{.Name}} = new({{getType $ic .Typ.Name .Typ}})
+				}
+			{{end}}
+			err = {{.Name}}.UnmarshalJSONFFLexer(fs, fflib.FFParse_want_key)
+			if err != nil {
+				return err
+			}
+		}
+		state = fflib.FFParse_after_value
+	}
+	{{else}}
+	{{if eq .Unmarshaler true}}
+	{
+		if tok == fflib.FFTok_null {
+			{{if eq .TakeAddr true }}
+				{{.Name}} = nil
+			{{end}}
+		} else {
+
+			tbuf, err := fs.CaptureField(tok)
+			if err != nil {
+				return fs.WrapErr(err)
+			}
+
+			{{if eq .TakeAddr true }}
+			if {{.Name}} == nil {
+				{{.Name}} = new({{getType $ic .Typ.Name .Typ}})
+			}
+			{{end}}
+			err = {{.Name}}.UnmarshalJSON(tbuf)
+			if err != nil {
+				return fs.WrapErr(err)
+			}
+		}
+		state = fflib.FFParse_after_value
+	}
+	{{end}}
+	{{end}}
+`
diff --git a/vendor/github.com/pquerna/ffjson/inception/encoder.go b/vendor/github.com/pquerna/ffjson/inception/encoder.go
new file mode 100644
index 000000000..3e37a2814
--- /dev/null
+++ b/vendor/github.com/pquerna/ffjson/inception/encoder.go
@@ -0,0 +1,544 @@
+/**
+ *  Copyright 2014 Paul Querna
+ *
+ *  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.
+ *
+ */
+
+package ffjsoninception
+
+import (
+	"fmt"
+	"reflect"
+
+	"github.com/pquerna/ffjson/shared"
+)
+
+func typeInInception(ic *Inception, typ reflect.Type, f shared.Feature) bool {
+	for _, v := range ic.objs {
+		if v.Typ == typ {
+			return v.Options.HasFeature(f)
+		}
+		if typ.Kind() == reflect.Ptr {
+			if v.Typ == typ.Elem() {
+				return v.Options.HasFeature(f)
+			}
+		}
+	}
+
+	return false
+}
+
+func getOmitEmpty(ic *Inception, sf *StructField) string {
+	ptname := "j." + sf.Name
+	if sf.Pointer {
+		ptname = "*" + ptname
+		return "if true {\n"
+	}
+	switch sf.Typ.Kind() {
+
+	case reflect.Array, reflect.Map, reflect.Slice, reflect.String:
+		return "if len(" + ptname + ") != 0 {" + "\n"
+
+	case reflect.Int,
+		reflect.Int8,
+		reflect.Int16,
+		reflect.Int32,
+		reflect.Int64,
+		reflect.Uint,
+		reflect.Uint8,
+		reflect.Uint16,
+		reflect.Uint32,
+		reflect.Uint64,
+		reflect.Uintptr,
+		reflect.Float32,
+		reflect.Float64:
+		return "if " + ptname + " != 0 {" + "\n"
+
+	case reflect.Bool:
+		return "if " + ptname + " != false {" + "\n"
+
+	case reflect.Interface, reflect.Ptr:
+		return "if " + ptname + " != nil {" + "\n"
+
+	default:
+		// TODO(pquerna): fix types
+		return "if true {" + "\n"
+	}
+}
+
+func getMapValue(ic *Inception, name string, typ reflect.Type, ptr bool, forceString bool) string {
+	var out = ""
+
+	if typ.Key().Kind() != reflect.String {
+		out += fmt.Sprintf("/* Falling back. type=%v kind=%v */\n", typ, typ.Kind())
+		out += ic.q.Flush()
+		out += "err = buf.Encode(" + name + ")" + "\n"
+		out += "if err != nil {" + "\n"
+		out += "  return err" + "\n"
+		out += "}" + "\n"
+		return out
+	}
+
+	var elemKind reflect.Kind
+	elemKind = typ.Elem().Kind()
+
+	switch elemKind {
+	case reflect.String,
+		reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64,
+		reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr,
+		reflect.Float32,
+		reflect.Float64,
+		reflect.Bool:
+
+		ic.OutputImports[`fflib "github.com/pquerna/ffjson/fflib/v1"`] = true
+
+		out += "if " + name + " == nil  {" + "\n"
+		ic.q.Write("null")
+		out += ic.q.GetQueued()
+		ic.q.DeleteLast()
+		out += "} else {" + "\n"
+		out += ic.q.WriteFlush("{ ")
+		out += "  for key, value := range " + name + " {" + "\n"
+		out += "    fflib.WriteJsonString(buf, key)" + "\n"
+		out += "    buf.WriteString(`:`)" + "\n"
+		out += getGetInnerValue(ic, "value", typ.Elem(), false, forceString)
+		out += "    buf.WriteByte(',')" + "\n"
+		out += "  }" + "\n"
+		out += "buf.Rewind(1)" + "\n"
+		out += ic.q.WriteFlush("}")
+		out += "}" + "\n"
+
+	default:
+		out += ic.q.Flush()
+		out += fmt.Sprintf("/* Falling back. type=%v kind=%v */\n", typ, typ.Kind())
+		out += "err = buf.Encode(" + name + ")" + "\n"
+		out += "if err != nil {" + "\n"
+		out += "  return err" + "\n"
+		out += "}" + "\n"
+	}
+	return out
+}
+
+func getGetInnerValue(ic *Inception, name string, typ reflect.Type, ptr bool, forceString bool) string {
+	var out = ""
+
+	// Flush if not bool or maps
+	if typ.Kind() != reflect.Bool && typ.Kind() != reflect.Map && typ.Kind() != reflect.Struct {
+		out += ic.q.Flush()
+	}
+
+	if typ.Implements(marshalerFasterType) ||
+		reflect.PtrTo(typ).Implements(marshalerFasterType) ||
+		typeInInception(ic, typ, shared.MustEncoder) ||
+		typ.Implements(marshalerType) ||
+		reflect.PtrTo(typ).Implements(marshalerType) {
+
+		out += ic.q.Flush()
+		out += tplStr(encodeTpl["handleMarshaler"], handleMarshaler{
+			IC:             ic,
+			Name:           name,
+			Typ:            typ,
+			Ptr:            reflect.Ptr,
+			MarshalJSONBuf: typ.Implements(marshalerFasterType) || reflect.PtrTo(typ).Implements(marshalerFasterType) || typeInInception(ic, typ, shared.MustEncoder),
+			Marshaler:      typ.Implements(marshalerType) || reflect.PtrTo(typ).Implements(marshalerType),
+		})
+		return out
+	}
+
+	ptname := name
+	if ptr {
+		ptname = "*" + name
+	}
+
+	switch typ.Kind() {
+	case reflect.Int,
+		reflect.Int8,
+		reflect.Int16,
+		reflect.Int32,
+		reflect.Int64:
+		ic.OutputImports[`fflib "github.com/pquerna/ffjson/fflib/v1"`] = true
+		out += "fflib.FormatBits2(buf, uint64(" + ptname + "), 10, " + ptname + " < 0)" + "\n"
+	case reflect.Uint,
+		reflect.Uint8,
+		reflect.Uint16,
+		reflect.Uint32,
+		reflect.Uint64,
+		reflect.Uintptr:
+		ic.OutputImports[`fflib "github.com/pquerna/ffjson/fflib/v1"`] = true
+		out += "fflib.FormatBits2(buf, uint64(" + ptname + "), 10, false)" + "\n"
+	case reflect.Float32:
+		ic.OutputImports[`fflib "github.com/pquerna/ffjson/fflib/v1"`] = true
+		out += "fflib.AppendFloat(buf, float64(" + ptname + "), 'g', -1, 32)" + "\n"
+	case reflect.Float64:
+		ic.OutputImports[`fflib "github.com/pquerna/ffjson/fflib/v1"`] = true
+		out += "fflib.AppendFloat(buf, float64(" + ptname + "), 'g', -1, 64)" + "\n"
+	case reflect.Array,
+		reflect.Slice:
+
+		// Arrays cannot be nil
+		if typ.Kind() != reflect.Array {
+			out += "if " + name + "!= nil {" + "\n"
+		}
+		// Array and slice values encode as JSON arrays, except that
+		// []byte encodes as a base64-encoded string, and a nil slice
+		// encodes as the null JSON object.
+		if typ.Kind() == reflect.Slice && typ.Elem().Kind() == reflect.Uint8 {
+			ic.OutputImports[`"encoding/base64"`] = true
+
+			out += "buf.WriteString(`\"`)" + "\n"
+			out += `{` + "\n"
+			out += `enc := base64.NewEncoder(base64.StdEncoding, buf)` + "\n"
+			if typ.Elem().Name() != "byte" {
+				ic.OutputImports[`"reflect"`] = true
+				out += `enc.Write(reflect.Indirect(reflect.ValueOf(` + ptname + `)).Bytes())` + "\n"
+
+			} else {
+				out += `enc.Write(` + ptname + `)` + "\n"
+			}
+			out += `enc.Close()` + "\n"
+			out += `}` + "\n"
+			out += "buf.WriteString(`\"`)" + "\n"
+		} else {
+			out += "buf.WriteString(`[`)" + "\n"
+			out += "for i, v := range " + ptname + "{" + "\n"
+			out += "if i != 0 {" + "\n"
+			out += "buf.WriteString(`,`)" + "\n"
+			out += "}" + "\n"
+			out += getGetInnerValue(ic, "v", typ.Elem(), false, false)
+			out += "}" + "\n"
+			out += "buf.WriteString(`]`)" + "\n"
+		}
+		if typ.Kind() != reflect.Array {
+			out += "} else {" + "\n"
+			out += "buf.WriteString(`null`)" + "\n"
+			out += "}" + "\n"
+		}
+	case reflect.String:
+		// Is it a json.Number?
+		if typ.PkgPath() == "encoding/json" && typ.Name() == "Number" {
+			// Fall back to json package to rely on the valid number check.
+			// See: https://github.com/golang/go/blob/92cd6e3af9f423ab4d8ac78f24e7fd81c31a8ce6/src/encoding/json/encode.go#L550
+			out += fmt.Sprintf("/* json.Number */\n")
+			out += "err = buf.Encode(" + name + ")" + "\n"
+			out += "if err != nil {" + "\n"
+			out += "  return err" + "\n"
+			out += "}" + "\n"
+		} else {
+			ic.OutputImports[`fflib "github.com/pquerna/ffjson/fflib/v1"`] = true
+			if forceString {
+				// Forcestring on strings does double-escaping of the entire value.
+				// We create a temporary buffer, encode to that an re-encode it.
+				out += "{" + "\n"
+				out += "tmpbuf := fflib.Buffer{}" + "\n"
+				out += "tmpbuf.Grow(len(" + ptname + ") + 16)" + "\n"
+				out += "fflib.WriteJsonString(&tmpbuf, string(" + ptname + "))" + "\n"
+				out += "fflib.WriteJsonString(buf, string( tmpbuf.Bytes() " + `))` + "\n"
+				out += "}" + "\n"
+			} else {
+				out += "fflib.WriteJsonString(buf, string(" + ptname + "))" + "\n"
+			}
+		}
+	case reflect.Ptr:
+		out += "if " + name + "!= nil {" + "\n"
+		switch typ.Elem().Kind() {
+		case reflect.Struct:
+			out += getGetInnerValue(ic, name, typ.Elem(), false, false)
+		default:
+			out += getGetInnerValue(ic, "*"+name, typ.Elem(), false, false)
+		}
+		out += "} else {" + "\n"
+		out += "buf.WriteString(`null`)" + "\n"
+		out += "}" + "\n"
+	case reflect.Bool:
+		out += "if " + ptname + " {" + "\n"
+		ic.q.Write("true")
+		out += ic.q.GetQueued()
+		out += "} else {" + "\n"
+		// Delete 'true'
+		ic.q.DeleteLast()
+		out += ic.q.WriteFlush("false")
+		out += "}" + "\n"
+	case reflect.Interface:
+		out += fmt.Sprintf("/* Interface types must use runtime reflection. type=%v kind=%v */\n", typ, typ.Kind())
+		out += "err = buf.Encode(" + name + ")" + "\n"
+		out += "if err != nil {" + "\n"
+		out += "  return err" + "\n"
+		out += "}" + "\n"
+	case reflect.Map:
+		out += getMapValue(ic, ptname, typ, ptr, forceString)
+	case reflect.Struct:
+		if typ.Name() == "" {
+			ic.q.Write("{")
+			ic.q.Write(" ")
+			out += fmt.Sprintf("/* Inline struct. type=%v kind=%v */\n", typ, typ.Kind())
+			newV := reflect.Indirect(reflect.New(typ)).Interface()
+			fields := extractFields(newV)
+
+			// Output all fields
+			for _, field := range fields {
+				// Adjust field name
+				field.Name = name + "." + field.Name
+				out += getField(ic, field, "")
+			}
+
+			if lastConditional(fields) {
+				out += ic.q.Flush()
+				out += `buf.Rewind(1)` + "\n"
+			} else {
+				ic.q.DeleteLast()
+			}
+			out += ic.q.WriteFlush("}")
+		} else {
+			out += fmt.Sprintf("/* Struct fall back. type=%v kind=%v */\n", typ, typ.Kind())
+			out += ic.q.Flush()
+			if ptr {
+				out += "err = buf.Encode(" + name + ")" + "\n"
+			} else {
+				// We send pointer to avoid copying entire struct
+				out += "err = buf.Encode(&" + name + ")" + "\n"
+			}
+			out += "if err != nil {" + "\n"
+			out += "  return err" + "\n"
+			out += "}" + "\n"
+		}
+	default:
+		out += fmt.Sprintf("/* Falling back. type=%v kind=%v */\n", typ, typ.Kind())
+		out += "err = buf.Encode(" + name + ")" + "\n"
+		out += "if err != nil {" + "\n"
+		out += "  return err" + "\n"
+		out += "}" + "\n"
+	}
+
+	return out
+}
+
+func getValue(ic *Inception, sf *StructField, prefix string) string {
+	closequote := false
+	if sf.ForceString {
+		switch sf.Typ.Kind() {
+		case reflect.Int,
+			reflect.Int8,
+			reflect.Int16,
+			reflect.Int32,
+			reflect.Int64,
+			reflect.Uint,
+			reflect.Uint8,
+			reflect.Uint16,
+			reflect.Uint32,
+			reflect.Uint64,
+			reflect.Uintptr,
+			reflect.Float32,
+			reflect.Float64,
+			reflect.Bool:
+			ic.q.Write(`"`)
+			closequote = true
+		}
+	}
+	out := getGetInnerValue(ic, prefix+sf.Name, sf.Typ, sf.Pointer, sf.ForceString)
+	if closequote {
+		if sf.Pointer {
+			out += ic.q.WriteFlush(`"`)
+		} else {
+			ic.q.Write(`"`)
+		}
+	}
+
+	return out
+}
+
+func p2(v uint32) uint32 {
+	v--
+	v |= v >> 1
+	v |= v >> 2
+	v |= v >> 4
+	v |= v >> 8
+	v |= v >> 16
+	v++
+	return v
+}
+
+func getTypeSize(t reflect.Type) uint32 {
+	switch t.Kind() {
+	case reflect.String:
+		// TODO: consider runtime analysis.
+		return 32
+	case reflect.Array, reflect.Map, reflect.Slice:
+		// TODO: consider runtime analysis.
+		return 4 * getTypeSize(t.Elem())
+	case reflect.Int,
+		reflect.Int8,
+		reflect.Int16,
+		reflect.Int32,
+		reflect.Uint,
+		reflect.Uint8,
+		reflect.Uint16,
+		reflect.Uint32:
+		return 8
+	case reflect.Int64,
+		reflect.Uint64,
+		reflect.Uintptr:
+		return 16
+	case reflect.Float32,
+		reflect.Float64:
+		return 16
+	case reflect.Bool:
+		return 4
+	case reflect.Ptr:
+		return getTypeSize(t.Elem())
+	default:
+		return 16
+	}
+}
+
+func getTotalSize(si *StructInfo) uint32 {
+	rv := uint32(si.Typ.Size())
+	for _, f := range si.Fields {
+		rv += getTypeSize(f.Typ)
+	}
+	return rv
+}
+
+func getBufGrowSize(si *StructInfo) uint32 {
+
+	// TOOD(pquerna): automatically calc a better grow size based on history
+	// of a struct.
+	return p2(getTotalSize(si))
+}
+
+func isIntish(t reflect.Type) bool {
+	if t.Kind() >= reflect.Int && t.Kind() <= reflect.Uintptr {
+		return true
+	}
+	if t.Kind() == reflect.Array || t.Kind() == reflect.Slice || t.Kind() == reflect.Ptr {
+		if t.Kind() == reflect.Slice && t.Elem().Kind() == reflect.Uint8 {
+			// base64 special case.
+			return false
+		} else {
+			return isIntish(t.Elem())
+		}
+	}
+	return false
+}
+
+func getField(ic *Inception, f *StructField, prefix string) string {
+	out := ""
+	if f.OmitEmpty {
+		out += ic.q.Flush()
+		if f.Pointer {
+			out += "if " + prefix + f.Name + " != nil {" + "\n"
+		}
+		out += getOmitEmpty(ic, f)
+	}
+
+	if f.Pointer && !f.OmitEmpty {
+		// Pointer values encode as the value pointed to. A nil pointer encodes as the null JSON object.
+		out += "if " + prefix + f.Name + " != nil {" + "\n"
+	}
+
+	// JsonName is already escaped and quoted.
+	// getInnervalue should flush
+	ic.q.Write(f.JsonName + ":")
+	// We save a copy in case we need it
+	t := ic.q
+
+	out += getValue(ic, f, prefix)
+	ic.q.Write(",")
+
+	if f.Pointer && !f.OmitEmpty {
+		out += "} else {" + "\n"
+		out += t.WriteFlush("null")
+		out += "}" + "\n"
+	}
+
+	if f.OmitEmpty {
+		out += ic.q.Flush()
+		if f.Pointer {
+			out += "}" + "\n"
+		}
+		out += "}" + "\n"
+	}
+	return out
+}
+
+// We check if the last field is conditional.
+func lastConditional(fields []*StructField) bool {
+	if len(fields) > 0 {
+		f := fields[len(fields)-1]
+		return f.OmitEmpty
+	}
+	return false
+}
+
+func CreateMarshalJSON(ic *Inception, si *StructInfo) error {
+	conditionalWrites := lastConditional(si.Fields)
+	out := ""
+
+	out += "// MarshalJSON marshal bytes to json - template\n"
+	out += `func (j *` + si.Name + `) MarshalJSON() ([]byte, error) {` + "\n"
+	out += `var buf fflib.Buffer` + "\n"
+
+	out += `if j == nil {` + "\n"
+	out += `  buf.WriteString("null")` + "\n"
+	out += "  return buf.Bytes(), nil" + "\n"
+	out += `}` + "\n"
+
+	out += `err := j.MarshalJSONBuf(&buf)` + "\n"
+	out += `if err != nil {` + "\n"
+	out += "  return nil, err" + "\n"
+	out += `}` + "\n"
+	out += `return buf.Bytes(), nil` + "\n"
+	out += `}` + "\n"
+
+	out += "// MarshalJSONBuf marshal buff to json - template\n"
+	out += `func (j *` + si.Name + `) MarshalJSONBuf(buf fflib.EncodingBuffer) (error) {` + "\n"
+	out += `  if j == nil {` + "\n"
+	out += `    buf.WriteString("null")` + "\n"
+	out += "    return nil" + "\n"
+	out += `  }` + "\n"
+
+	out += `var err error` + "\n"
+	out += `var obj []byte` + "\n"
+	out += `_ = obj` + "\n"
+	out += `_ = err` + "\n"
+
+	ic.q.Write("{")
+
+	// The extra space is inserted here.
+	// If nothing is written to the field this will be deleted
+	// instead of the last comma.
+	if conditionalWrites || len(si.Fields) == 0 {
+		ic.q.Write(" ")
+	}
+
+	for _, f := range si.Fields {
+		out += getField(ic, f, "j.")
+	}
+
+	// Handling the last comma is tricky.
+	// If the last field has omitempty, conditionalWrites is set.
+	// If something has been written, we delete the last comma,
+	// by backing up the buffer, otherwise it will delete a space.
+	if conditionalWrites {
+		out += ic.q.Flush()
+		out += `buf.Rewind(1)` + "\n"
+	} else {
+		ic.q.DeleteLast()
+	}
+
+	out += ic.q.WriteFlush("}")
+	out += `return nil` + "\n"
+	out += `}` + "\n"
+	ic.OutputFuncs = append(ic.OutputFuncs, out)
+	return nil
+}
diff --git a/vendor/github.com/pquerna/ffjson/inception/encoder_tpl.go b/vendor/github.com/pquerna/ffjson/inception/encoder_tpl.go
new file mode 100644
index 000000000..22ab5292e
--- /dev/null
+++ b/vendor/github.com/pquerna/ffjson/inception/encoder_tpl.go
@@ -0,0 +1,73 @@
+/**
+ *  Copyright 2014 Paul Querna
+ *
+ *  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.
+ *
+ */
+
+package ffjsoninception
+
+import (
+	"reflect"
+	"text/template"
+)
+
+var encodeTpl map[string]*template.Template
+
+func init() {
+	encodeTpl = make(map[string]*template.Template)
+
+	funcs := map[string]string{
+		"handleMarshaler": handleMarshalerTxt,
+	}
+	tplFuncs := template.FuncMap{}
+
+	for k, v := range funcs {
+		encodeTpl[k] = template.Must(template.New(k).Funcs(tplFuncs).Parse(v))
+	}
+}
+
+type handleMarshaler struct {
+	IC             *Inception
+	Name           string
+	Typ            reflect.Type
+	Ptr            reflect.Kind
+	MarshalJSONBuf bool
+	Marshaler      bool
+}
+
+var handleMarshalerTxt = `
+	{
+		{{if eq .Typ.Kind .Ptr}}
+		if {{.Name}} == nil {
+			buf.WriteString("null")
+		} else {
+		{{end}}
+
+		{{if eq .MarshalJSONBuf true}}
+		err = {{.Name}}.MarshalJSONBuf(buf)
+		if err != nil {
+			return err
+		}
+		{{else if eq .Marshaler true}}
+		obj, err = {{.Name}}.MarshalJSON()
+		if err != nil {
+			return err
+		}
+		buf.Write(obj)
+		{{end}}
+		{{if eq .Typ.Kind .Ptr}}
+		}
+		{{end}}
+	}
+`
diff --git a/vendor/github.com/pquerna/ffjson/inception/inception.go b/vendor/github.com/pquerna/ffjson/inception/inception.go
new file mode 100644
index 000000000..10cb2712c
--- /dev/null
+++ b/vendor/github.com/pquerna/ffjson/inception/inception.go
@@ -0,0 +1,160 @@
+/**
+ *  Copyright 2014 Paul Querna
+ *
+ *  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.
+ *
+ */
+
+package ffjsoninception
+
+import (
+	"errors"
+	"fmt"
+	"github.com/pquerna/ffjson/shared"
+	"io/ioutil"
+	"os"
+	"reflect"
+	"sort"
+)
+
+type Inception struct {
+	objs          []*StructInfo
+	InputPath     string
+	OutputPath    string
+	PackageName   string
+	PackagePath   string
+	OutputImports map[string]bool
+	OutputFuncs   []string
+	q             ConditionalWrite
+	ResetFields   bool
+}
+
+func NewInception(inputPath string, packageName string, outputPath string, resetFields bool) *Inception {
+	return &Inception{
+		objs:          make([]*StructInfo, 0),
+		InputPath:     inputPath,
+		OutputPath:    outputPath,
+		PackageName:   packageName,
+		OutputFuncs:   make([]string, 0),
+		OutputImports: make(map[string]bool),
+		ResetFields:   resetFields,
+	}
+}
+
+func (i *Inception) AddMany(objs []shared.InceptionType) {
+	for _, obj := range objs {
+		i.Add(obj)
+	}
+}
+
+func (i *Inception) Add(obj shared.InceptionType) {
+	i.objs = append(i.objs, NewStructInfo(obj))
+	i.PackagePath = i.objs[0].Typ.PkgPath()
+}
+
+func (i *Inception) wantUnmarshal(si *StructInfo) bool {
+	if si.Options.SkipDecoder {
+		return false
+	}
+	typ := si.Typ
+	umlx := typ.Implements(unmarshalFasterType) || reflect.PtrTo(typ).Implements(unmarshalFasterType)
+	umlstd := typ.Implements(unmarshalerType) || reflect.PtrTo(typ).Implements(unmarshalerType)
+	if umlstd && !umlx {
+		// structure has UnmarshalJSON, but not our faster version -- skip it.
+		return false
+	}
+	return true
+}
+
+func (i *Inception) wantMarshal(si *StructInfo) bool {
+	if si.Options.SkipEncoder {
+		return false
+	}
+	typ := si.Typ
+	mlx := typ.Implements(marshalerFasterType) || reflect.PtrTo(typ).Implements(marshalerFasterType)
+	mlstd := typ.Implements(marshalerType) || reflect.PtrTo(typ).Implements(marshalerType)
+	if mlstd && !mlx {
+		// structure has MarshalJSON, but not our faster version -- skip it.
+		return false
+	}
+	return true
+}
+
+type sortedStructs []*StructInfo
+
+func (p sortedStructs) Len() int           { return len(p) }
+func (p sortedStructs) Less(i, j int) bool { return p[i].Name < p[j].Name }
+func (p sortedStructs) Swap(i, j int)      { p[i], p[j] = p[j], p[i] }
+func (p sortedStructs) Sort()              { sort.Sort(p) }
+
+func (i *Inception) generateCode() error {
+	// We sort the structs by name, so output if predictable.
+	sorted := sortedStructs(i.objs)
+	sorted.Sort()
+
+	for _, si := range sorted {
+		if i.wantMarshal(si) {
+			err := CreateMarshalJSON(i, si)
+			if err != nil {
+				return err
+			}
+		}
+
+		if i.wantUnmarshal(si) {
+			err := CreateUnmarshalJSON(i, si)
+			if err != nil {
+				return err
+			}
+		}
+	}
+	return nil
+}
+
+func (i *Inception) handleError(err error) {
+	fmt.Fprintf(os.Stderr, "Error: %s:\n\n", err)
+	os.Exit(1)
+}
+
+func (i *Inception) Execute() {
+	if len(os.Args) != 1 {
+		i.handleError(errors.New(fmt.Sprintf("Internal ffjson error: inception executable takes no args: %v", os.Args)))
+		return
+	}
+
+	err := i.generateCode()
+	if err != nil {
+		i.handleError(err)
+		return
+	}
+
+	data, err := RenderTemplate(i)
+	if err != nil {
+		i.handleError(err)
+		return
+	}
+
+	stat, err := os.Stat(i.InputPath)
+
+	if err != nil {
+		i.handleError(err)
+		return
+	}
+
+	err = ioutil.WriteFile(i.OutputPath, data, stat.Mode())
+
+	if err != nil {
+		i.handleError(err)
+		return
+	}
+
+}
diff --git a/vendor/github.com/pquerna/ffjson/inception/reflect.go b/vendor/github.com/pquerna/ffjson/inception/reflect.go
new file mode 100644
index 000000000..8fb0bd5cb
--- /dev/null
+++ b/vendor/github.com/pquerna/ffjson/inception/reflect.go
@@ -0,0 +1,290 @@
+/**
+ *  Copyright 2014 Paul Querna
+ *
+ *  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.
+ *
+ */
+
+package ffjsoninception
+
+import (
+	fflib "github.com/pquerna/ffjson/fflib/v1"
+	"github.com/pquerna/ffjson/shared"
+
+	"bytes"
+	"encoding/json"
+	"reflect"
+	"unicode/utf8"
+)
+
+type StructField struct {
+	Name             string
+	JsonName         string
+	FoldFuncName     string
+	Typ              reflect.Type
+	OmitEmpty        bool
+	ForceString      bool
+	HasMarshalJSON   bool
+	HasUnmarshalJSON bool
+	Pointer          bool
+	Tagged           bool
+}
+
+type FieldByJsonName []*StructField
+
+func (a FieldByJsonName) Len() int           { return len(a) }
+func (a FieldByJsonName) Swap(i, j int)      { a[i], a[j] = a[j], a[i] }
+func (a FieldByJsonName) Less(i, j int) bool { return a[i].JsonName < a[j].JsonName }
+
+type StructInfo struct {
+	Name    string
+	Obj     interface{}
+	Typ     reflect.Type
+	Fields  []*StructField
+	Options shared.StructOptions
+}
+
+func NewStructInfo(obj shared.InceptionType) *StructInfo {
+	t := reflect.TypeOf(obj.Obj)
+	return &StructInfo{
+		Obj:     obj.Obj,
+		Name:    t.Name(),
+		Typ:     t,
+		Fields:  extractFields(obj.Obj),
+		Options: obj.Options,
+	}
+}
+
+func (si *StructInfo) FieldsByFirstByte() map[string][]*StructField {
+	rv := make(map[string][]*StructField)
+	for _, f := range si.Fields {
+		b := string(f.JsonName[1])
+		rv[b] = append(rv[b], f)
+	}
+	return rv
+}
+
+func (si *StructInfo) ReverseFields() []*StructField {
+	var i int
+	rv := make([]*StructField, 0)
+	for i = len(si.Fields) - 1; i >= 0; i-- {
+		rv = append(rv, si.Fields[i])
+	}
+	return rv
+}
+
+const (
+	caseMask = ^byte(0x20) // Mask to ignore case in ASCII.
+)
+
+func foldFunc(key []byte) string {
+	nonLetter := false
+	special := false // special letter
+	for _, b := range key {
+		if b >= utf8.RuneSelf {
+			return "bytes.EqualFold"
+		}
+		upper := b & caseMask
+		if upper < 'A' || upper > 'Z' {
+			nonLetter = true
+		} else if upper == 'K' || upper == 'S' {
+			// See above for why these letters are special.
+			special = true
+		}
+	}
+	if special {
+		return "fflib.EqualFoldRight"
+	}
+	if nonLetter {
+		return "fflib.AsciiEqualFold"
+	}
+	return "fflib.SimpleLetterEqualFold"
+}
+
+type MarshalerFaster interface {
+	MarshalJSONBuf(buf fflib.EncodingBuffer) error
+}
+
+type UnmarshalFaster interface {
+	UnmarshalJSONFFLexer(l *fflib.FFLexer, state fflib.FFParseState) error
+}
+
+var marshalerType = reflect.TypeOf(new(json.Marshaler)).Elem()
+var marshalerFasterType = reflect.TypeOf(new(MarshalerFaster)).Elem()
+var unmarshalerType = reflect.TypeOf(new(json.Unmarshaler)).Elem()
+var unmarshalFasterType = reflect.TypeOf(new(UnmarshalFaster)).Elem()
+
+// extractFields returns a list of fields that JSON should recognize for the given type.
+// The algorithm is breadth-first search over the set of structs to include - the top struct
+// and then any reachable anonymous structs.
+func extractFields(obj interface{}) []*StructField {
+	t := reflect.TypeOf(obj)
+	// Anonymous fields to explore at the current level and the next.
+	current := []StructField{}
+	next := []StructField{{Typ: t}}
+
+	// Count of queued names for current level and the next.
+	count := map[reflect.Type]int{}
+	nextCount := map[reflect.Type]int{}
+
+	// Types already visited at an earlier level.
+	visited := map[reflect.Type]bool{}
+
+	// Fields found.
+	var fields []*StructField
+
+	for len(next) > 0 {
+		current, next = next, current[:0]
+		count, nextCount = nextCount, map[reflect.Type]int{}
+
+		for _, f := range current {
+			if visited[f.Typ] {
+				continue
+			}
+			visited[f.Typ] = true
+
+			// Scan f.typ for fields to include.
+			for i := 0; i < f.Typ.NumField(); i++ {
+				sf := f.Typ.Field(i)
+				if sf.PkgPath != "" { // unexported
+					continue
+				}
+				tag := sf.Tag.Get("json")
+				if tag == "-" {
+					continue
+				}
+				name, opts := parseTag(tag)
+				if !isValidTag(name) {
+					name = ""
+				}
+
+				ft := sf.Type
+				ptr := false
+				if ft.Kind() == reflect.Ptr {
+					ptr = true
+				}
+
+				if ft.Name() == "" && ft.Kind() == reflect.Ptr {
+					// Follow pointer.
+					ft = ft.Elem()
+				}
+
+				// Record found field and index sequence.
+				if name != "" || !sf.Anonymous || ft.Kind() != reflect.Struct {
+					tagged := name != ""
+					if name == "" {
+						name = sf.Name
+					}
+
+					var buf bytes.Buffer
+					fflib.WriteJsonString(&buf, name)
+
+					field := &StructField{
+						Name:             sf.Name,
+						JsonName:         string(buf.Bytes()),
+						FoldFuncName:     foldFunc([]byte(name)),
+						Typ:              ft,
+						HasMarshalJSON:   ft.Implements(marshalerType),
+						HasUnmarshalJSON: ft.Implements(unmarshalerType),
+						OmitEmpty:        opts.Contains("omitempty"),
+						ForceString:      opts.Contains("string"),
+						Pointer:          ptr,
+						Tagged:           tagged,
+					}
+
+					fields = append(fields, field)
+
+					if count[f.Typ] > 1 {
+						// If there were multiple instances, add a second,
+						// so that the annihilation code will see a duplicate.
+						// It only cares about the distinction between 1 or 2,
+						// so don't bother generating any more copies.
+						fields = append(fields, fields[len(fields)-1])
+					}
+					continue
+				}
+
+				// Record new anonymous struct to explore in next round.
+				nextCount[ft]++
+				if nextCount[ft] == 1 {
+					next = append(next, StructField{
+						Name: ft.Name(),
+						Typ:  ft,
+					})
+				}
+			}
+		}
+	}
+
+	// Delete all fields that are hidden by the Go rules for embedded fields,
+	// except that fields with JSON tags are promoted.
+
+	// The fields are sorted in primary order of name, secondary order
+	// of field index length. Loop over names; for each name, delete
+	// hidden fields by choosing the one dominant field that survives.
+	out := fields[:0]
+	for advance, i := 0, 0; i < len(fields); i += advance {
+		// One iteration per name.
+		// Find the sequence of fields with the name of this first field.
+		fi := fields[i]
+		name := fi.JsonName
+		for advance = 1; i+advance < len(fields); advance++ {
+			fj := fields[i+advance]
+			if fj.JsonName != name {
+				break
+			}
+		}
+		if advance == 1 { // Only one field with this name
+			out = append(out, fi)
+			continue
+		}
+		dominant, ok := dominantField(fields[i : i+advance])
+		if ok {
+			out = append(out, dominant)
+		}
+	}
+
+	fields = out
+
+	return fields
+}
+
+// dominantField looks through the fields, all of which are known to
+// have the same name, to find the single field that dominates the
+// others using Go's embedding rules, modified by the presence of
+// JSON tags. If there are multiple top-level fields, the boolean
+// will be false: This condition is an error in Go and we skip all
+// the fields.
+func dominantField(fields []*StructField) (*StructField, bool) {
+	tagged := -1 // Index of first tagged field.
+	for i, f := range fields {
+		if f.Tagged {
+			if tagged >= 0 {
+				// Multiple tagged fields at the same level: conflict.
+				// Return no field.
+				return nil, false
+			}
+			tagged = i
+		}
+	}
+	if tagged >= 0 {
+		return fields[tagged], true
+	}
+	// All remaining fields have the same length. If there's more than one,
+	// we have a conflict (two fields named "X" at the same level) and we
+	// return no field.
+	if len(fields) > 1 {
+		return nil, false
+	}
+	return fields[0], true
+}
diff --git a/vendor/github.com/pquerna/ffjson/inception/tags.go b/vendor/github.com/pquerna/ffjson/inception/tags.go
new file mode 100644
index 000000000..ccce101b8
--- /dev/null
+++ b/vendor/github.com/pquerna/ffjson/inception/tags.go
@@ -0,0 +1,79 @@
+/**
+ *  Copyright 2014 Paul Querna
+ *
+ *  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.
+ *
+ */
+
+package ffjsoninception
+
+import (
+	"strings"
+	"unicode"
+)
+
+// from: http://golang.org/src/pkg/encoding/json/tags.go
+
+// tagOptions is the string following a comma in a struct field's "json"
+// tag, or the empty string. It does not include the leading comma.
+type tagOptions string
+
+// parseTag splits a struct field's json tag into its name and
+// comma-separated options.
+func parseTag(tag string) (string, tagOptions) {
+	if idx := strings.Index(tag, ","); idx != -1 {
+		return tag[:idx], tagOptions(tag[idx+1:])
+	}
+	return tag, tagOptions("")
+}
+
+// Contains reports whether a comma-separated list of options
+// contains a particular substr flag. substr must be surrounded by a
+// string boundary or commas.
+func (o tagOptions) Contains(optionName string) bool {
+	if len(o) == 0 {
+		return false
+	}
+	s := string(o)
+	for s != "" {
+		var next string
+		i := strings.Index(s, ",")
+		if i >= 0 {
+			s, next = s[:i], s[i+1:]
+		}
+		if s == optionName {
+			return true
+		}
+		s = next
+	}
+	return false
+}
+
+func isValidTag(s string) bool {
+	if s == "" {
+		return false
+	}
+	for _, c := range s {
+		switch {
+		case strings.ContainsRune("!#$%&()*+-./:<=>?@[]^_{|}~ ", c):
+			// Backslash and quote chars are reserved, but
+			// otherwise any punctuation chars are allowed
+			// in a tag name.
+		default:
+			if !unicode.IsLetter(c) && !unicode.IsDigit(c) {
+				return false
+			}
+		}
+	}
+	return true
+}
diff --git a/vendor/github.com/pquerna/ffjson/inception/template.go b/vendor/github.com/pquerna/ffjson/inception/template.go
new file mode 100644
index 000000000..121a23dd8
--- /dev/null
+++ b/vendor/github.com/pquerna/ffjson/inception/template.go
@@ -0,0 +1,60 @@
+/**
+ *  Copyright 2014 Paul Querna
+ *
+ *  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.
+ *
+ */
+
+package ffjsoninception
+
+import (
+	"bytes"
+	"go/format"
+	"text/template"
+)
+
+const ffjsonTemplate = `
+// Code generated by ffjson <https://github.com/pquerna/ffjson>. DO NOT EDIT.
+// source: {{.InputPath}}
+
+package {{.PackageName}}
+
+import (
+{{range $k, $v := .OutputImports}}{{$k}}
+{{end}}
+)
+
+{{range .OutputFuncs}}
+{{.}}
+{{end}}
+
+`
+
+func RenderTemplate(ic *Inception) ([]byte, error) {
+	t := template.Must(template.New("ffjson.go").Parse(ffjsonTemplate))
+	buf := new(bytes.Buffer)
+	err := t.Execute(buf, ic)
+	if err != nil {
+		return nil, err
+	}
+	return format.Source(buf.Bytes())
+}
+
+func tplStr(t *template.Template, data interface{}) string {
+	buf := bytes.Buffer{}
+	err := t.Execute(&buf, data)
+	if err != nil {
+		panic(err)
+	}
+	return buf.String()
+}
diff --git a/vendor/github.com/pquerna/ffjson/inception/writerstack.go b/vendor/github.com/pquerna/ffjson/inception/writerstack.go
new file mode 100644
index 000000000..1521961c9
--- /dev/null
+++ b/vendor/github.com/pquerna/ffjson/inception/writerstack.go
@@ -0,0 +1,65 @@
+package ffjsoninception
+
+import "strings"
+
+// ConditionalWrite is a stack containing a number of pending writes
+type ConditionalWrite struct {
+	Queued []string
+}
+
+// Write will add a string to be written
+func (w *ConditionalWrite) Write(s string) {
+	w.Queued = append(w.Queued, s)
+}
+
+// DeleteLast will delete the last added write
+func (w *ConditionalWrite) DeleteLast() {
+	if len(w.Queued) == 0 {
+		return
+	}
+	w.Queued = w.Queued[:len(w.Queued)-1]
+}
+
+// Last will return the last added write
+func (w *ConditionalWrite) Last() string {
+	if len(w.Queued) == 0 {
+		return ""
+	}
+	return w.Queued[len(w.Queued)-1]
+}
+
+// Flush will return all queued writes, and return
+// "" (empty string) in nothing has been queued
+// "buf.WriteByte('" + byte + "')" + '\n' if one bute has been queued.
+// "buf.WriteString(`" + string + "`)" + "\n" if more than one byte has been queued.
+func (w *ConditionalWrite) Flush() string {
+	combined := strings.Join(w.Queued, "")
+	if len(combined) == 0 {
+		return ""
+	}
+
+	w.Queued = nil
+	if len(combined) == 1 {
+		return "buf.WriteByte('" + combined + "')" + "\n"
+	}
+	return "buf.WriteString(`" + combined + "`)" + "\n"
+}
+
+func (w *ConditionalWrite) FlushTo(out string) string {
+	out += w.Flush()
+	return out
+}
+
+// WriteFlush will add a string and return the Flush result for the queue
+func (w *ConditionalWrite) WriteFlush(s string) string {
+	w.Write(s)
+	return w.Flush()
+}
+
+// GetQueued will return the current queued content without flushing.
+func (w *ConditionalWrite) GetQueued() string {
+	t := w.Queued
+	s := w.Flush()
+	w.Queued = t
+	return s
+}
diff --git a/vendor/github.com/pquerna/ffjson/shared/options.go b/vendor/github.com/pquerna/ffjson/shared/options.go
new file mode 100644
index 000000000..d74edc135
--- /dev/null
+++ b/vendor/github.com/pquerna/ffjson/shared/options.go
@@ -0,0 +1,51 @@
+/**
+ *  Copyright 2014 Paul Querna, Klaus Post
+ *
+ *  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.
+ *
+ */
+
+package shared
+
+type StructOptions struct {
+	SkipDecoder bool
+	SkipEncoder bool
+}
+
+type InceptionType struct {
+	Obj     interface{}
+	Options StructOptions
+}
+type Feature int
+
+const (
+	Nothing     Feature = 0
+	MustDecoder         = 1 << 1
+	MustEncoder         = 1 << 2
+	MustEncDec          = MustDecoder | MustEncoder
+)
+
+func (i InceptionType) HasFeature(f Feature) bool {
+	return i.HasFeature(f)
+}
+
+func (s StructOptions) HasFeature(f Feature) bool {
+	hasNeeded := true
+	if f&MustDecoder != 0 && s.SkipDecoder {
+		hasNeeded = false
+	}
+	if f&MustEncoder != 0 && s.SkipEncoder {
+		hasNeeded = false
+	}
+	return hasNeeded
+}