53 files changed, 9323 insertions, 0 deletions

diff --git a/vendor/github.com/json-iterator/go/.codecov.yml b/vendor/github.com/json-iterator/go/.codecov.yml
new file mode 100644
index 0000000..955dc0b
--- /dev/null
+++ b/vendor/github.com/json-iterator/go/.codecov.yml
@@ -0,0 +1,3 @@
+ignore:
+    - "output_tests/.*"
+
diff --git a/vendor/github.com/json-iterator/go/.gitignore b/vendor/github.com/json-iterator/go/.gitignore
new file mode 100644
index 0000000..1555653
--- /dev/null
+++ b/vendor/github.com/json-iterator/go/.gitignore
@@ -0,0 +1,4 @@
+/vendor
+/bug_test.go
+/coverage.txt
+/.idea
diff --git a/vendor/github.com/json-iterator/go/.travis.yml b/vendor/github.com/json-iterator/go/.travis.yml
new file mode 100644
index 0000000..449e67c
--- /dev/null
+++ b/vendor/github.com/json-iterator/go/.travis.yml
@@ -0,0 +1,14 @@
+language: go
+
+go:
+  - 1.8.x
+  - 1.x
+
+before_install:
+  - go get -t -v ./...
+
+script:
+  - ./test.sh
+
+after_success:
+  - bash <(curl -s https://codecov.io/bash)
diff --git a/vendor/github.com/json-iterator/go/Gopkg.lock b/vendor/github.com/json-iterator/go/Gopkg.lock
new file mode 100644
index 0000000..c8a9fbb
--- /dev/null
+++ b/vendor/github.com/json-iterator/go/Gopkg.lock
@@ -0,0 +1,21 @@
+# 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"
+
+[[projects]]
+  name = "github.com/modern-go/reflect2"
+  packages = ["."]
+  revision = "4b7aa43c6742a2c18fdef89dd197aaae7dac7ccd"
+  version = "1.0.1"
+
+[solve-meta]
+  analyzer-name = "dep"
+  analyzer-version = 1
+  inputs-digest = "ea54a775e5a354cb015502d2e7aa4b74230fc77e894f34a838b268c25ec8eeb8"
+  solver-name = "gps-cdcl"
+  solver-version = 1
diff --git a/vendor/github.com/json-iterator/go/Gopkg.toml b/vendor/github.com/json-iterator/go/Gopkg.toml
new file mode 100644
index 0000000..313a0f8
--- /dev/null
+++ b/vendor/github.com/json-iterator/go/Gopkg.toml
@@ -0,0 +1,26 @@
+# Gopkg.toml example
+#
+# Refer to https://github.com/golang/dep/blob/master/docs/Gopkg.toml.md
+# 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"
+
+ignored = ["github.com/davecgh/go-spew*","github.com/google/gofuzz*","github.com/stretchr/testify*"]
+
+[[constraint]]
+  name = "github.com/modern-go/reflect2"
+  version = "1.0.1"
diff --git a/vendor/github.com/json-iterator/go/LICENSE b/vendor/github.com/json-iterator/go/LICENSE
new file mode 100644
index 0000000..2cf4f5a
--- /dev/null
+++ b/vendor/github.com/json-iterator/go/LICENSE
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2016 json-iterator
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/vendor/github.com/json-iterator/go/README.md b/vendor/github.com/json-iterator/go/README.md
new file mode 100644
index 0000000..c589add
--- /dev/null
+++ b/vendor/github.com/json-iterator/go/README.md
@@ -0,0 +1,85 @@
+[![Sourcegraph](https://sourcegraph.com/github.com/json-iterator/go/-/badge.svg)](https://sourcegraph.com/github.com/json-iterator/go?badge)
+[![GoDoc](http://img.shields.io/badge/go-documentation-blue.svg?style=flat-square)](https://pkg.go.dev/github.com/json-iterator/go)
+[![Build Status](https://travis-ci.org/json-iterator/go.svg?branch=master)](https://travis-ci.org/json-iterator/go)
+[![codecov](https://codecov.io/gh/json-iterator/go/branch/master/graph/badge.svg)](https://codecov.io/gh/json-iterator/go)
+[![rcard](https://goreportcard.com/badge/github.com/json-iterator/go)](https://goreportcard.com/report/github.com/json-iterator/go)
+[![License](http://img.shields.io/badge/license-mit-blue.svg?style=flat-square)](https://raw.githubusercontent.com/json-iterator/go/master/LICENSE)
+[![Gitter chat](https://badges.gitter.im/gitterHQ/gitter.png)](https://gitter.im/json-iterator/Lobby)
+
+A high-performance 100% compatible drop-in replacement of "encoding/json"
+
+# Benchmark
+
+![benchmark](http://jsoniter.com/benchmarks/go-benchmark.png)
+
+Source code: https://github.com/json-iterator/go-benchmark/blob/master/src/github.com/json-iterator/go-benchmark/benchmark_medium_payload_test.go
+
+Raw Result (easyjson requires static code generation)
+
+|                 | ns/op       | allocation bytes | allocation times |
+| --------------- | ----------- | ---------------- | ---------------- |
+| std decode      | 35510 ns/op | 1960 B/op        | 99 allocs/op     |
+| easyjson decode | 8499 ns/op  | 160 B/op         | 4 allocs/op      |
+| jsoniter decode | 5623 ns/op  | 160 B/op         | 3 allocs/op      |
+| std encode      | 2213 ns/op  | 712 B/op         | 5 allocs/op      |
+| easyjson encode | 883 ns/op   | 576 B/op         | 3 allocs/op      |
+| jsoniter encode | 837 ns/op   | 384 B/op         | 4 allocs/op      |
+
+Always benchmark with your own workload.
+The result depends heavily on the data input.
+
+# Usage
+
+100% compatibility with standard lib
+
+Replace
+
+```go
+import "encoding/json"
+json.Marshal(&data)
+```
+
+with
+
+```go
+import jsoniter "github.com/json-iterator/go"
+
+var json = jsoniter.ConfigCompatibleWithStandardLibrary
+json.Marshal(&data)
+```
+
+Replace
+
+```go
+import "encoding/json"
+json.Unmarshal(input, &data)
+```
+
+with
+
+```go
+import jsoniter "github.com/json-iterator/go"
+
+var json = jsoniter.ConfigCompatibleWithStandardLibrary
+json.Unmarshal(input, &data)
+```
+
+[More documentation](http://jsoniter.com/migrate-from-go-std.html)
+
+# How to get
+
+```
+go get github.com/json-iterator/go
+```
+
+# Contribution Welcomed !
+
+Contributors
+
+- [thockin](https://github.com/thockin)
+- [mattn](https://github.com/mattn)
+- [cch123](https://github.com/cch123)
+- [Oleg Shaldybin](https://github.com/olegshaldybin)
+- [Jason Toffaletti](https://github.com/toffaletti)
+
+Report issue or pull request, or email [email protected], or [![Gitter chat](https://badges.gitter.im/gitterHQ/gitter.png)](https://gitter.im/json-iterator/Lobby)
diff --git a/vendor/github.com/json-iterator/go/adapter.go b/vendor/github.com/json-iterator/go/adapter.go
new file mode 100644
index 0000000..92d2cc4
--- /dev/null
+++ b/vendor/github.com/json-iterator/go/adapter.go
@@ -0,0 +1,150 @@
+package jsoniter
+
+import (
+        "bytes"
+        "io"
+)
+
+// RawMessage to make replace json with jsoniter
+type RawMessage []byte
+
+// Unmarshal adapts to json/encoding Unmarshal API
+//
+// Unmarshal parses the JSON-encoded data and stores the result in the value pointed to by v.
+// Refer to https://godoc.org/encoding/json#Unmarshal for more information
+func Unmarshal(data []byte, v interface{}) error {
+        return ConfigDefault.Unmarshal(data, v)
+}
+
+// UnmarshalFromString is a convenient method to read from string instead of []byte
+func UnmarshalFromString(str string, v interface{}) error {
+        return ConfigDefault.UnmarshalFromString(str, v)
+}
+
+// Get quick method to get value from deeply nested JSON structure
+func Get(data []byte, path ...interface{}) Any {
+        return ConfigDefault.Get(data, path...)
+}
+
+// Marshal adapts to json/encoding Marshal API
+//
+// Marshal returns the JSON encoding of v, adapts to json/encoding Marshal API
+// Refer to https://godoc.org/encoding/json#Marshal for more information
+func Marshal(v interface{}) ([]byte, error) {
+        return ConfigDefault.Marshal(v)
+}
+
+// MarshalIndent same as json.MarshalIndent. Prefix is not supported.
+func MarshalIndent(v interface{}, prefix, indent string) ([]byte, error) {
+        return ConfigDefault.MarshalIndent(v, prefix, indent)
+}
+
+// MarshalToString convenient method to write as string instead of []byte
+func MarshalToString(v interface{}) (string, error) {
+        return ConfigDefault.MarshalToString(v)
+}
+
+// NewDecoder adapts to json/stream NewDecoder API.
+//
+// NewDecoder returns a new decoder that reads from r.
+//
+// Instead of a json/encoding Decoder, an Decoder is returned
+// Refer to https://godoc.org/encoding/json#NewDecoder for more information
+func NewDecoder(reader io.Reader) *Decoder {
+        return ConfigDefault.NewDecoder(reader)
+}
+
+// Decoder reads and decodes JSON values from an input stream.
+// Decoder provides identical APIs with json/stream Decoder (Token() and UseNumber() are in progress)
+type Decoder struct {
+        iter *Iterator
+}
+
+// Decode decode JSON into interface{}
+func (adapter *Decoder) Decode(obj interface{}) error {
+        if adapter.iter.head == adapter.iter.tail && adapter.iter.reader != nil {
+                if !adapter.iter.loadMore() {
+                        return io.EOF
+                }
+        }
+        adapter.iter.ReadVal(obj)
+        err := adapter.iter.Error
+        if err == io.EOF {
+                return nil
+        }
+        return adapter.iter.Error
+}
+
+// More is there more?
+func (adapter *Decoder) More() bool {
+        iter := adapter.iter
+        if iter.Error != nil {
+                return false
+        }
+        c := iter.nextToken()
+        if c == 0 {
+                return false
+        }
+        iter.unreadByte()
+        return c != ']' && c != '}'
+}
+
+// Buffered remaining buffer
+func (adapter *Decoder) Buffered() io.Reader {
+        remaining := adapter.iter.buf[adapter.iter.head:adapter.iter.tail]
+        return bytes.NewReader(remaining)
+}
+
+// UseNumber causes the Decoder to unmarshal a number into an interface{} as a
+// Number instead of as a float64.
+func (adapter *Decoder) UseNumber() {
+        cfg := adapter.iter.cfg.configBeforeFrozen
+        cfg.UseNumber = true
+        adapter.iter.cfg = cfg.frozeWithCacheReuse(adapter.iter.cfg.extraExtensions)
+}
+
+// DisallowUnknownFields causes the Decoder to return an error when the destination
+// is a struct and the input contains object keys which do not match any
+// non-ignored, exported fields in the destination.
+func (adapter *Decoder) DisallowUnknownFields() {
+        cfg := adapter.iter.cfg.configBeforeFrozen
+        cfg.DisallowUnknownFields = true
+        adapter.iter.cfg = cfg.frozeWithCacheReuse(adapter.iter.cfg.extraExtensions)
+}
+
+// NewEncoder same as json.NewEncoder
+func NewEncoder(writer io.Writer) *Encoder {
+        return ConfigDefault.NewEncoder(writer)
+}
+
+// Encoder same as json.Encoder
+type Encoder struct {
+        stream *Stream
+}
+
+// Encode encode interface{} as JSON to io.Writer
+func (adapter *Encoder) Encode(val interface{}) error {
+        adapter.stream.WriteVal(val)
+        adapter.stream.WriteRaw("\n")
+        adapter.stream.Flush()
+        return adapter.stream.Error
+}
+
+// SetIndent set the indention. Prefix is not supported
+func (adapter *Encoder) SetIndent(prefix, indent string) {
+        config := adapter.stream.cfg.configBeforeFrozen
+        config.IndentionStep = len(indent)
+        adapter.stream.cfg = config.frozeWithCacheReuse(adapter.stream.cfg.extraExtensions)
+}
+
+// SetEscapeHTML escape html by default, set to false to disable
+func (adapter *Encoder) SetEscapeHTML(escapeHTML bool) {
+        config := adapter.stream.cfg.configBeforeFrozen
+        config.EscapeHTML = escapeHTML
+        adapter.stream.cfg = config.frozeWithCacheReuse(adapter.stream.cfg.extraExtensions)
+}
+
+// Valid reports whether data is a valid JSON encoding.
+func Valid(data []byte) bool {
+        return ConfigDefault.Valid(data)
+}
diff --git a/vendor/github.com/json-iterator/go/any.go b/vendor/github.com/json-iterator/go/any.go
new file mode 100644
index 0000000..f6b8aea
--- /dev/null
+++ b/vendor/github.com/json-iterator/go/any.go
@@ -0,0 +1,325 @@
+package jsoniter
+
+import (
+        "errors"
+        "fmt"
+        "github.com/modern-go/reflect2"
+        "io"
+        "reflect"
+        "strconv"
+        "unsafe"
+)
+
+// Any generic object representation.
+// The lazy json implementation holds []byte and parse lazily.
+type Any interface {
+        LastError() error
+        ValueType() ValueType
+        MustBeValid() Any
+        ToBool() bool
+        ToInt() int
+        ToInt32() int32
+        ToInt64() int64
+        ToUint() uint
+        ToUint32() uint32
+        ToUint64() uint64
+        ToFloat32() float32
+        ToFloat64() float64
+        ToString() string
+        ToVal(val interface{})
+        Get(path ...interface{}) Any
+        Size() int
+        Keys() []string
+        GetInterface() interface{}
+        WriteTo(stream *Stream)
+}
+
+type baseAny struct{}
+
+func (any *baseAny) Get(path ...interface{}) Any {
+        return &invalidAny{baseAny{}, fmt.Errorf("GetIndex %v from simple value", path)}
+}
+
+func (any *baseAny) Size() int {
+        return 0
+}
+
+func (any *baseAny) Keys() []string {
+        return []string{}
+}
+
+func (any *baseAny) ToVal(obj interface{}) {
+        panic("not implemented")
+}
+
+// WrapInt32 turn int32 into Any interface
+func WrapInt32(val int32) Any {
+        return &int32Any{baseAny{}, val}
+}
+
+// WrapInt64 turn int64 into Any interface
+func WrapInt64(val int64) Any {
+        return &int64Any{baseAny{}, val}
+}
+
+// WrapUint32 turn uint32 into Any interface
+func WrapUint32(val uint32) Any {
+        return &uint32Any{baseAny{}, val}
+}
+
+// WrapUint64 turn uint64 into Any interface
+func WrapUint64(val uint64) Any {
+        return &uint64Any{baseAny{}, val}
+}
+
+// WrapFloat64 turn float64 into Any interface
+func WrapFloat64(val float64) Any {
+        return &floatAny{baseAny{}, val}
+}
+
+// WrapString turn string into Any interface
+func WrapString(val string) Any {
+        return &stringAny{baseAny{}, val}
+}
+
+// Wrap turn a go object into Any interface
+func Wrap(val interface{}) Any {
+        if val == nil {
+                return &nilAny{}
+        }
+        asAny, isAny := val.(Any)
+        if isAny {
+                return asAny
+        }
+        typ := reflect2.TypeOf(val)
+        switch typ.Kind() {
+        case reflect.Slice:
+                return wrapArray(val)
+        case reflect.Struct:
+                return wrapStruct(val)
+        case reflect.Map:
+                return wrapMap(val)
+        case reflect.String:
+                return WrapString(val.(string))
+        case reflect.Int:
+                if strconv.IntSize == 32 {
+                        return WrapInt32(int32(val.(int)))
+                }
+                return WrapInt64(int64(val.(int)))
+        case reflect.Int8:
+                return WrapInt32(int32(val.(int8)))
+        case reflect.Int16:
+                return WrapInt32(int32(val.(int16)))
+        case reflect.Int32:
+                return WrapInt32(val.(int32))
+        case reflect.Int64:
+                return WrapInt64(val.(int64))
+        case reflect.Uint:
+                if strconv.IntSize == 32 {
+                        return WrapUint32(uint32(val.(uint)))
+                }
+                return WrapUint64(uint64(val.(uint)))
+        case reflect.Uintptr:
+                if ptrSize == 32 {
+                        return WrapUint32(uint32(val.(uintptr)))
+                }
+                return WrapUint64(uint64(val.(uintptr)))
+        case reflect.Uint8:
+                return WrapUint32(uint32(val.(uint8)))
+        case reflect.Uint16:
+                return WrapUint32(uint32(val.(uint16)))
+        case reflect.Uint32:
+                return WrapUint32(uint32(val.(uint32)))
+        case reflect.Uint64:
+                return WrapUint64(val.(uint64))
+        case reflect.Float32:
+                return WrapFloat64(float64(val.(float32)))
+        case reflect.Float64:
+                return WrapFloat64(val.(float64))
+        case reflect.Bool:
+                if val.(bool) == true {
+                        return &trueAny{}
+                }
+                return &falseAny{}
+        }
+        return &invalidAny{baseAny{}, fmt.Errorf("unsupported type: %v", typ)}
+}
+
+// ReadAny read next JSON element as an Any object. It is a better json.RawMessage.
+func (iter *Iterator) ReadAny() Any {
+        return iter.readAny()
+}
+
+func (iter *Iterator) readAny() Any {
+        c := iter.nextToken()
+        switch c {
+        case '"':
+                iter.unreadByte()
+                return &stringAny{baseAny{}, iter.ReadString()}
+        case 'n':
+                iter.skipThreeBytes('u', 'l', 'l') // null
+                return &nilAny{}
+        case 't':
+                iter.skipThreeBytes('r', 'u', 'e') // true
+                return &trueAny{}
+        case 'f':
+                iter.skipFourBytes('a', 'l', 's', 'e') // false
+                return &falseAny{}
+        case '{':
+                return iter.readObjectAny()
+        case '[':
+                return iter.readArrayAny()
+        case '-':
+                return iter.readNumberAny(false)
+        case 0:
+                return &invalidAny{baseAny{}, errors.New("input is empty")}
+        default:
+                return iter.readNumberAny(true)
+        }
+}
+
+func (iter *Iterator) readNumberAny(positive bool) Any {
+        iter.startCapture(iter.head - 1)
+        iter.skipNumber()
+        lazyBuf := iter.stopCapture()
+        return &numberLazyAny{baseAny{}, iter.cfg, lazyBuf, nil}
+}
+
+func (iter *Iterator) readObjectAny() Any {
+        iter.startCapture(iter.head - 1)
+        iter.skipObject()
+        lazyBuf := iter.stopCapture()
+        return &objectLazyAny{baseAny{}, iter.cfg, lazyBuf, nil}
+}
+
+func (iter *Iterator) readArrayAny() Any {
+        iter.startCapture(iter.head - 1)
+        iter.skipArray()
+        lazyBuf := iter.stopCapture()
+        return &arrayLazyAny{baseAny{}, iter.cfg, lazyBuf, nil}
+}
+
+func locateObjectField(iter *Iterator, target string) []byte {
+        var found []byte
+        iter.ReadObjectCB(func(iter *Iterator, field string) bool {
+                if field == target {
+                        found = iter.SkipAndReturnBytes()
+                        return false
+                }
+                iter.Skip()
+                return true
+        })
+        return found
+}
+
+func locateArrayElement(iter *Iterator, target int) []byte {
+        var found []byte
+        n := 0
+        iter.ReadArrayCB(func(iter *Iterator) bool {
+                if n == target {
+                        found = iter.SkipAndReturnBytes()
+                        return false
+                }
+                iter.Skip()
+                n++
+                return true
+        })
+        return found
+}
+
+func locatePath(iter *Iterator, path []interface{}) Any {
+        for i, pathKeyObj := range path {
+                switch pathKey := pathKeyObj.(type) {
+                case string:
+                        valueBytes := locateObjectField(iter, pathKey)
+                        if valueBytes == nil {
+                                return newInvalidAny(path[i:])
+                        }
+                        iter.ResetBytes(valueBytes)
+                case int:
+                        valueBytes := locateArrayElement(iter, pathKey)
+                        if valueBytes == nil {
+                                return newInvalidAny(path[i:])
+                        }
+                        iter.ResetBytes(valueBytes)
+                case int32:
+                        if '*' == pathKey {
+                                return iter.readAny().Get(path[i:]...)
+                        }
+                        return newInvalidAny(path[i:])
+                default:
+                        return newInvalidAny(path[i:])
+                }
+        }
+        if iter.Error != nil && iter.Error != io.EOF {
+                return &invalidAny{baseAny{}, iter.Error}
+        }
+        return iter.readAny()
+}
+
+var anyType = reflect2.TypeOfPtr((*Any)(nil)).Elem()
+
+func createDecoderOfAny(ctx *ctx, typ reflect2.Type) ValDecoder {
+        if typ == anyType {
+                return &directAnyCodec{}
+        }
+        if typ.Implements(anyType) {
+                return &anyCodec{
+                        valType: typ,
+                }
+        }
+        return nil
+}
+
+func createEncoderOfAny(ctx *ctx, typ reflect2.Type) ValEncoder {
+        if typ == anyType {
+                return &directAnyCodec{}
+        }
+        if typ.Implements(anyType) {
+                return &anyCodec{
+                        valType: typ,
+                }
+        }
+        return nil
+}
+
+type anyCodec struct {
+        valType reflect2.Type
+}
+
+func (codec *anyCodec) Decode(ptr unsafe.Pointer, iter *Iterator) {
+        panic("not implemented")
+}
+
+func (codec *anyCodec) Encode(ptr unsafe.Pointer, stream *Stream) {
+        obj := codec.valType.UnsafeIndirect(ptr)
+        any := obj.(Any)
+        any.WriteTo(stream)
+}
+
+func (codec *anyCodec) IsEmpty(ptr unsafe.Pointer) bool {
+        obj := codec.valType.UnsafeIndirect(ptr)
+        any := obj.(Any)
+        return any.Size() == 0
+}
+
+type directAnyCodec struct {
+}
+
+func (codec *directAnyCodec) Decode(ptr unsafe.Pointer, iter *Iterator) {
+        *(*Any)(ptr) = iter.readAny()
+}
+
+func (codec *directAnyCodec) Encode(ptr unsafe.Pointer, stream *Stream) {
+        any := *(*Any)(ptr)
+        if any == nil {
+                stream.WriteNil()
+                return
+        }
+        any.WriteTo(stream)
+}
+
+func (codec *directAnyCodec) IsEmpty(ptr unsafe.Pointer) bool {
+        any := *(*Any)(ptr)
+        return any.Size() == 0
+}
diff --git a/vendor/github.com/json-iterator/go/any_array.go b/vendor/github.com/json-iterator/go/any_array.go
new file mode 100644
index 0000000..0449e9a
--- /dev/null
+++ b/vendor/github.com/json-iterator/go/any_array.go
@@ -0,0 +1,278 @@
+package jsoniter
+
+import (
+        "reflect"
+        "unsafe"
+)
+
+type arrayLazyAny struct {
+        baseAny
+        cfg *frozenConfig
+        buf []byte
+        err error
+}
+
+func (any *arrayLazyAny) ValueType() ValueType {
+        return ArrayValue
+}
+
+func (any *arrayLazyAny) MustBeValid() Any {
+        return any
+}
+
+func (any *arrayLazyAny) LastError() error {
+        return any.err
+}
+
+func (any *arrayLazyAny) ToBool() bool {
+        iter := any.cfg.BorrowIterator(any.buf)
+        defer any.cfg.ReturnIterator(iter)
+        return iter.ReadArray()
+}
+
+func (any *arrayLazyAny) ToInt() int {
+        if any.ToBool() {
+                return 1
+        }
+        return 0
+}
+
+func (any *arrayLazyAny) ToInt32() int32 {
+        if any.ToBool() {
+                return 1
+        }
+        return 0
+}
+
+func (any *arrayLazyAny) ToInt64() int64 {
+        if any.ToBool() {
+                return 1
+        }
+        return 0
+}
+
+func (any *arrayLazyAny) ToUint() uint {
+        if any.ToBool() {
+                return 1
+        }
+        return 0
+}
+
+func (any *arrayLazyAny) ToUint32() uint32 {
+        if any.ToBool() {
+                return 1
+        }
+        return 0
+}
+
+func (any *arrayLazyAny) ToUint64() uint64 {
+        if any.ToBool() {
+                return 1
+        }
+        return 0
+}
+
+func (any *arrayLazyAny) ToFloat32() float32 {
+        if any.ToBool() {
+                return 1
+        }
+        return 0
+}
+
+func (any *arrayLazyAny) ToFloat64() float64 {
+        if any.ToBool() {
+                return 1
+        }
+        return 0
+}
+
+func (any *arrayLazyAny) ToString() string {
+        return *(*string)(unsafe.Pointer(&any.buf))
+}
+
+func (any *arrayLazyAny) ToVal(val interface{}) {
+        iter := any.cfg.BorrowIterator(any.buf)
+        defer any.cfg.ReturnIterator(iter)
+        iter.ReadVal(val)
+}
+
+func (any *arrayLazyAny) Get(path ...interface{}) Any {
+        if len(path) == 0 {
+                return any
+        }
+        switch firstPath := path[0].(type) {
+        case int:
+                iter := any.cfg.BorrowIterator(any.buf)
+                defer any.cfg.ReturnIterator(iter)
+                valueBytes := locateArrayElement(iter, firstPath)
+                if valueBytes == nil {
+                        return newInvalidAny(path)
+                }
+                iter.ResetBytes(valueBytes)
+                return locatePath(iter, path[1:])
+        case int32:
+                if '*' == firstPath {
+                        iter := any.cfg.BorrowIterator(any.buf)
+                        defer any.cfg.ReturnIterator(iter)
+                        arr := make([]Any, 0)
+                        iter.ReadArrayCB(func(iter *Iterator) bool {
+                                found := iter.readAny().Get(path[1:]...)
+                                if found.ValueType() != InvalidValue {
+                                        arr = append(arr, found)
+                                }
+                                return true
+                        })
+                        return wrapArray(arr)
+                }
+                return newInvalidAny(path)
+        default:
+                return newInvalidAny(path)
+        }
+}
+
+func (any *arrayLazyAny) Size() int {
+        size := 0
+        iter := any.cfg.BorrowIterator(any.buf)
+        defer any.cfg.ReturnIterator(iter)
+        iter.ReadArrayCB(func(iter *Iterator) bool {
+                size++
+                iter.Skip()
+                return true
+        })
+        return size
+}
+
+func (any *arrayLazyAny) WriteTo(stream *Stream) {
+        stream.Write(any.buf)
+}
+
+func (any *arrayLazyAny) GetInterface() interface{} {
+        iter := any.cfg.BorrowIterator(any.buf)
+        defer any.cfg.ReturnIterator(iter)
+        return iter.Read()
+}
+
+type arrayAny struct {
+        baseAny
+        val reflect.Value
+}
+
+func wrapArray(val interface{}) *arrayAny {
+        return &arrayAny{baseAny{}, reflect.ValueOf(val)}
+}
+
+func (any *arrayAny) ValueType() ValueType {
+        return ArrayValue
+}
+
+func (any *arrayAny) MustBeValid() Any {
+        return any
+}
+
+func (any *arrayAny) LastError() error {
+        return nil
+}
+
+func (any *arrayAny) ToBool() bool {
+        return any.val.Len() != 0
+}
+
+func (any *arrayAny) ToInt() int {
+        if any.val.Len() == 0 {
+                return 0
+        }
+        return 1
+}
+
+func (any *arrayAny) ToInt32() int32 {
+        if any.val.Len() == 0 {
+                return 0
+        }
+        return 1
+}
+
+func (any *arrayAny) ToInt64() int64 {
+        if any.val.Len() == 0 {
+                return 0
+        }
+        return 1
+}
+
+func (any *arrayAny) ToUint() uint {
+        if any.val.Len() == 0 {
+                return 0
+        }
+        return 1
+}
+
+func (any *arrayAny) ToUint32() uint32 {
+        if any.val.Len() == 0 {
+                return 0
+        }
+        return 1
+}
+
+func (any *arrayAny) ToUint64() uint64 {
+        if any.val.Len() == 0 {
+                return 0
+        }
+        return 1
+}
+
+func (any *arrayAny) ToFloat32() float32 {
+        if any.val.Len() == 0 {
+                return 0
+        }
+        return 1
+}
+
+func (any *arrayAny) ToFloat64() float64 {
+        if any.val.Len() == 0 {
+                return 0
+        }
+        return 1
+}
+
+func (any *arrayAny) ToString() string {
+        str, _ := MarshalToString(any.val.Interface())
+        return str
+}
+
+func (any *arrayAny) Get(path ...interface{}) Any {
+        if len(path) == 0 {
+                return any
+        }
+        switch firstPath := path[0].(type) {
+        case int:
+                if firstPath < 0 || firstPath >= any.val.Len() {
+                        return newInvalidAny(path)
+                }
+                return Wrap(any.val.Index(firstPath).Interface())
+        case int32:
+                if '*' == firstPath {
+                        mappedAll := make([]Any, 0)
+                        for i := 0; i < any.val.Len(); i++ {
+                                mapped := Wrap(any.val.Index(i).Interface()).Get(path[1:]...)
+                                if mapped.ValueType() != InvalidValue {
+                                        mappedAll = append(mappedAll, mapped)
+                                }
+                        }
+                        return wrapArray(mappedAll)
+                }
+                return newInvalidAny(path)
+        default:
+                return newInvalidAny(path)
+        }
+}
+
+func (any *arrayAny) Size() int {
+        return any.val.Len()
+}
+
+func (any *arrayAny) WriteTo(stream *Stream) {
+        stream.WriteVal(any.val)
+}
+
+func (any *arrayAny) GetInterface() interface{} {
+        return any.val.Interface()
+}
diff --git a/vendor/github.com/json-iterator/go/any_bool.go b/vendor/github.com/json-iterator/go/any_bool.go
new file mode 100644
index 0000000..9452324
--- /dev/null
+++ b/vendor/github.com/json-iterator/go/any_bool.go
@@ -0,0 +1,137 @@
+package jsoniter
+
+type trueAny struct {
+        baseAny
+}
+
+func (any *trueAny) LastError() error {
+        return nil
+}
+
+func (any *trueAny) ToBool() bool {
+        return true
+}
+
+func (any *trueAny) ToInt() int {
+        return 1
+}
+
+func (any *trueAny) ToInt32() int32 {
+        return 1
+}
+
+func (any *trueAny) ToInt64() int64 {
+        return 1
+}
+
+func (any *trueAny) ToUint() uint {
+        return 1
+}
+
+func (any *trueAny) ToUint32() uint32 {
+        return 1
+}
+
+func (any *trueAny) ToUint64() uint64 {
+        return 1
+}
+
+func (any *trueAny) ToFloat32() float32 {
+        return 1
+}
+
+func (any *trueAny) ToFloat64() float64 {
+        return 1
+}
+
+func (any *trueAny) ToString() string {
+        return "true"
+}
+
+func (any *trueAny) WriteTo(stream *Stream) {
+        stream.WriteTrue()
+}
+
+func (any *trueAny) Parse() *Iterator {
+        return nil
+}
+
+func (any *trueAny) GetInterface() interface{} {
+        return true
+}
+
+func (any *trueAny) ValueType() ValueType {
+        return BoolValue
+}
+
+func (any *trueAny) MustBeValid() Any {
+        return any
+}
+
+type falseAny struct {
+        baseAny
+}
+
+func (any *falseAny) LastError() error {
+        return nil
+}
+
+func (any *falseAny) ToBool() bool {
+        return false
+}
+
+func (any *falseAny) ToInt() int {
+        return 0
+}
+
+func (any *falseAny) ToInt32() int32 {
+        return 0
+}
+
+func (any *falseAny) ToInt64() int64 {
+        return 0
+}
+
+func (any *falseAny) ToUint() uint {
+        return 0
+}
+
+func (any *falseAny) ToUint32() uint32 {
+        return 0
+}
+
+func (any *falseAny) ToUint64() uint64 {
+        return 0
+}
+
+func (any *falseAny) ToFloat32() float32 {
+        return 0
+}
+
+func (any *falseAny) ToFloat64() float64 {
+        return 0
+}
+
+func (any *falseAny) ToString() string {
+        return "false"
+}
+
+func (any *falseAny) WriteTo(stream *Stream) {
+        stream.WriteFalse()
+}
+
+func (any *falseAny) Parse() *Iterator {
+        return nil
+}
+
+func (any *falseAny) GetInterface() interface{} {
+        return false
+}
+
+func (any *falseAny) ValueType() ValueType {
+        return BoolValue
+}
+
+func (any *falseAny) MustBeValid() Any {
+        return any
+}
diff --git a/vendor/github.com/json-iterator/go/any_float.go b/vendor/github.com/json-iterator/go/any_float.go
new file mode 100644
index 0000000..35fdb09
--- /dev/null
+++ b/vendor/github.com/json-iterator/go/any_float.go
@@ -0,0 +1,83 @@
+package jsoniter
+
+import (
+        "strconv"
+)
+
+type floatAny struct {
+        baseAny
+        val float64
+}
+
+func (any *floatAny) Parse() *Iterator {
+        return nil
+}
+
+func (any *floatAny) ValueType() ValueType {
+        return NumberValue
+}
+
+func (any *floatAny) MustBeValid() Any {
+        return any
+}
+
+func (any *floatAny) LastError() error {
+        return nil
+}
+
+func (any *floatAny) ToBool() bool {
+        return any.ToFloat64() != 0
+}
+
+func (any *floatAny) ToInt() int {
+        return int(any.val)
+}
+
+func (any *floatAny) ToInt32() int32 {
+        return int32(any.val)
+}
+
+func (any *floatAny) ToInt64() int64 {
+        return int64(any.val)
+}
+
+func (any *floatAny) ToUint() uint {
+        if any.val > 0 {
+                return uint(any.val)
+        }
+        return 0
+}
+
+func (any *floatAny) ToUint32() uint32 {
+        if any.val > 0 {
+                return uint32(any.val)
+        }
+        return 0
+}
+
+func (any *floatAny) ToUint64() uint64 {
+        if any.val > 0 {
+                return uint64(any.val)
+        }
+        return 0
+}
+
+func (any *floatAny) ToFloat32() float32 {
+        return float32(any.val)
+}
+
+func (any *floatAny) ToFloat64() float64 {
+        return any.val
+}
+
+func (any *floatAny) ToString() string {
+        return strconv.FormatFloat(any.val, 'E', -1, 64)
+}
+
+func (any *floatAny) WriteTo(stream *Stream) {
+        stream.WriteFloat64(any.val)
+}
+
+func (any *floatAny) GetInterface() interface{} {
+        return any.val
+}
diff --git a/vendor/github.com/json-iterator/go/any_int32.go b/vendor/github.com/json-iterator/go/any_int32.go
new file mode 100644
index 0000000..1b56f39
--- /dev/null
+++ b/vendor/github.com/json-iterator/go/any_int32.go
@@ -0,0 +1,74 @@
+package jsoniter
+
+import (
+        "strconv"
+)
+
+type int32Any struct {
+        baseAny
+        val int32
+}
+
+func (any *int32Any) LastError() error {
+        return nil
+}
+
+func (any *int32Any) ValueType() ValueType {
+        return NumberValue
+}
+
+func (any *int32Any) MustBeValid() Any {
+        return any
+}
+
+func (any *int32Any) ToBool() bool {
+        return any.val != 0
+}
+
+func (any *int32Any) ToInt() int {
+        return int(any.val)
+}
+
+func (any *int32Any) ToInt32() int32 {
+        return any.val
+}
+
+func (any *int32Any) ToInt64() int64 {
+        return int64(any.val)
+}
+
+func (any *int32Any) ToUint() uint {
+        return uint(any.val)
+}
+
+func (any *int32Any) ToUint32() uint32 {
+        return uint32(any.val)
+}
+
+func (any *int32Any) ToUint64() uint64 {
+        return uint64(any.val)
+}
+
+func (any *int32Any) ToFloat32() float32 {
+        return float32(any.val)
+}
+
+func (any *int32Any) ToFloat64() float64 {
+        return float64(any.val)
+}
+
+func (any *int32Any) ToString() string {
+        return strconv.FormatInt(int64(any.val), 10)
+}
+
+func (any *int32Any) WriteTo(stream *Stream) {
+        stream.WriteInt32(any.val)
+}
+
+func (any *int32Any) Parse() *Iterator {
+        return nil
+}
+
+func (any *int32Any) GetInterface() interface{} {
+        return any.val
+}
diff --git a/vendor/github.com/json-iterator/go/any_int64.go b/vendor/github.com/json-iterator/go/any_int64.go
new file mode 100644
index 0000000..c440d72
--- /dev/null
+++ b/vendor/github.com/json-iterator/go/any_int64.go
@@ -0,0 +1,74 @@
+package jsoniter
+
+import (
+        "strconv"
+)
+
+type int64Any struct {
+        baseAny
+        val int64
+}
+
+func (any *int64Any) LastError() error {
+        return nil
+}
+
+func (any *int64Any) ValueType() ValueType {
+        return NumberValue
+}
+
+func (any *int64Any) MustBeValid() Any {
+        return any
+}
+
+func (any *int64Any) ToBool() bool {
+        return any.val != 0
+}
+
+func (any *int64Any) ToInt() int {
+        return int(any.val)
+}
+
+func (any *int64Any) ToInt32() int32 {
+        return int32(any.val)
+}
+
+func (any *int64Any) ToInt64() int64 {
+        return any.val
+}
+
+func (any *int64Any) ToUint() uint {
+        return uint(any.val)
+}
+
+func (any *int64Any) ToUint32() uint32 {
+        return uint32(any.val)
+}
+
+func (any *int64Any) ToUint64() uint64 {
+        return uint64(any.val)
+}
+
+func (any *int64Any) ToFloat32() float32 {
+        return float32(any.val)
+}
+
+func (any *int64Any) ToFloat64() float64 {
+        return float64(any.val)
+}
+
+func (any *int64Any) ToString() string {
+        return strconv.FormatInt(any.val, 10)
+}
+
+func (any *int64Any) WriteTo(stream *Stream) {
+        stream.WriteInt64(any.val)
+}
+
+func (any *int64Any) Parse() *Iterator {
+        return nil
+}
+
+func (any *int64Any) GetInterface() interface{} {
+        return any.val
+}
diff --git a/vendor/github.com/json-iterator/go/any_invalid.go b/vendor/github.com/json-iterator/go/any_invalid.go
new file mode 100644
index 0000000..1d859ea
--- /dev/null
+++ b/vendor/github.com/json-iterator/go/any_invalid.go
@@ -0,0 +1,82 @@
+package jsoniter
+
+import "fmt"
+
+type invalidAny struct {
+        baseAny
+        err error
+}
+
+func newInvalidAny(path []interface{}) *invalidAny {
+        return &invalidAny{baseAny{}, fmt.Errorf("%v not found", path)}
+}
+
+func (any *invalidAny) LastError() error {
+        return any.err
+}
+
+func (any *invalidAny) ValueType() ValueType {
+        return InvalidValue
+}
+
+func (any *invalidAny) MustBeValid() Any {
+        panic(any.err)
+}
+
+func (any *invalidAny) ToBool() bool {
+        return false
+}
+
+func (any *invalidAny) ToInt() int {
+        return 0
+}
+
+func (any *invalidAny) ToInt32() int32 {
+        return 0
+}
+
+func (any *invalidAny) ToInt64() int64 {
+        return 0
+}
+
+func (any *invalidAny) ToUint() uint {
+        return 0
+}
+
+func (any *invalidAny) ToUint32() uint32 {
+        return 0
+}
+
+func (any *invalidAny) ToUint64() uint64 {
+        return 0
+}
+
+func (any *invalidAny) ToFloat32() float32 {
+        return 0
+}
+
+func (any *invalidAny) ToFloat64() float64 {
+        return 0
+}
+
+func (any *invalidAny) ToString() string {
+        return ""
+}
+
+func (any *invalidAny) WriteTo(stream *Stream) {
+}
+
+func (any *invalidAny) Get(path ...interface{}) Any {
+        if any.err == nil {
+                return &invalidAny{baseAny{}, fmt.Errorf("get %v from invalid", path)}
+        }
+        return &invalidAny{baseAny{}, fmt.Errorf("%v, get %v from invalid", any.err, path)}
+}
+
+func (any *invalidAny) Parse() *Iterator {
+        return nil
+}
+
+func (any *invalidAny) GetInterface() interface{} {
+        return nil
+}
diff --git a/vendor/github.com/json-iterator/go/any_nil.go b/vendor/github.com/json-iterator/go/any_nil.go
new file mode 100644
index 0000000..d04cb54
--- /dev/null
+++ b/vendor/github.com/json-iterator/go/any_nil.go
@@ -0,0 +1,69 @@
+package jsoniter
+
+type nilAny struct {
+        baseAny
+}
+
+func (any *nilAny) LastError() error {
+        return nil
+}
+
+func (any *nilAny) ValueType() ValueType {
+        return NilValue
+}
+
+func (any *nilAny) MustBeValid() Any {
+        return any
+}
+
+func (any *nilAny) ToBool() bool {
+        return false
+}
+
+func (any *nilAny) ToInt() int {
+        return 0
+}
+
+func (any *nilAny) ToInt32() int32 {
+        return 0
+}
+
+func (any *nilAny) ToInt64() int64 {
+        return 0
+}
+
+func (any *nilAny) ToUint() uint {
+        return 0
+}
+
+func (any *nilAny) ToUint32() uint32 {
+        return 0
+}
+
+func (any *nilAny) ToUint64() uint64 {
+        return 0
+}
+
+func (any *nilAny) ToFloat32() float32 {
+        return 0
+}
+
+func (any *nilAny) ToFloat64() float64 {
+        return 0
+}
+
+func (any *nilAny) ToString() string {
+        return ""
+}
+
+func (any *nilAny) WriteTo(stream *Stream) {
+        stream.WriteNil()
+}
+
+func (any *nilAny) Parse() *Iterator {
+        return nil
+}
+
+func (any *nilAny) GetInterface() interface{} {
+        return nil
+}
diff --git a/vendor/github.com/json-iterator/go/any_number.go b/vendor/github.com/json-iterator/go/any_number.go
new file mode 100644
index 0000000..9d1e901
--- /dev/null
+++ b/vendor/github.com/json-iterator/go/any_number.go
@@ -0,0 +1,123 @@
+package jsoniter
+
+import (
+        "io"
+        "unsafe"
+)
+
+type numberLazyAny struct {
+        baseAny
+        cfg *frozenConfig
+        buf []byte
+        err error
+}
+
+func (any *numberLazyAny) ValueType() ValueType {
+        return NumberValue
+}
+
+func (any *numberLazyAny) MustBeValid() Any {
+        return any
+}
+
+func (any *numberLazyAny) LastError() error {
+        return any.err
+}
+
+func (any *numberLazyAny) ToBool() bool {
+        return any.ToFloat64() != 0
+}
+
+func (any *numberLazyAny) ToInt() int {
+        iter := any.cfg.BorrowIterator(any.buf)
+        defer any.cfg.ReturnIterator(iter)
+        val := iter.ReadInt()
+        if iter.Error != nil && iter.Error != io.EOF {
+                any.err = iter.Error
+        }
+        return val
+}
+
+func (any *numberLazyAny) ToInt32() int32 {
+        iter := any.cfg.BorrowIterator(any.buf)
+        defer any.cfg.ReturnIterator(iter)
+        val := iter.ReadInt32()
+        if iter.Error != nil && iter.Error != io.EOF {
+                any.err = iter.Error
+        }
+        return val
+}
+
+func (any *numberLazyAny) ToInt64() int64 {
+        iter := any.cfg.BorrowIterator(any.buf)
+        defer any.cfg.ReturnIterator(iter)
+        val := iter.ReadInt64()
+        if iter.Error != nil && iter.Error != io.EOF {
+                any.err = iter.Error
+        }
+        return val
+}
+
+func (any *numberLazyAny) ToUint() uint {
+        iter := any.cfg.BorrowIterator(any.buf)
+        defer any.cfg.ReturnIterator(iter)
+        val := iter.ReadUint()
+        if iter.Error != nil && iter.Error != io.EOF {
+                any.err = iter.Error
+        }
+        return val
+}
+
+func (any *numberLazyAny) ToUint32() uint32 {
+        iter := any.cfg.BorrowIterator(any.buf)
+        defer any.cfg.ReturnIterator(iter)
+        val := iter.ReadUint32()
+        if iter.Error != nil && iter.Error != io.EOF {
+                any.err = iter.Error
+        }
+        return val
+}
+
+func (any *numberLazyAny) ToUint64() uint64 {
+        iter := any.cfg.BorrowIterator(any.buf)
+        defer any.cfg.ReturnIterator(iter)
+        val := iter.ReadUint64()
+        if iter.Error != nil && iter.Error != io.EOF {
+                any.err = iter.Error
+        }
+        return val
+}
+
+func (any *numberLazyAny) ToFloat32() float32 {
+        iter := any.cfg.BorrowIterator(any.buf)
+        defer any.cfg.ReturnIterator(iter)
+        val := iter.ReadFloat32()
+        if iter.Error != nil && iter.Error != io.EOF {
+                any.err = iter.Error
+        }
+        return val
+}
+
+func (any *numberLazyAny) ToFloat64() float64 {
+        iter := any.cfg.BorrowIterator(any.buf)
+        defer any.cfg.ReturnIterator(iter)
+        val := iter.ReadFloat64()
+        if iter.Error != nil && iter.Error != io.EOF {
+                any.err = iter.Error
+        }
+        return val
+}
+
+func (any *numberLazyAny) ToString() string {
+        return *(*string)(unsafe.Pointer(&any.buf))
+}
+
+func (any *numberLazyAny) WriteTo(stream *Stream) {
+        stream.Write(any.buf)
+}
+
+func (any *numberLazyAny) GetInterface() interface{} {
+        iter := any.cfg.BorrowIterator(any.buf)
+        defer any.cfg.ReturnIterator(iter)
+        return iter.Read()
+}
diff --git a/vendor/github.com/json-iterator/go/any_object.go b/vendor/github.com/json-iterator/go/any_object.go
new file mode 100644
index 0000000..c44ef5c
--- /dev/null
+++ b/vendor/github.com/json-iterator/go/any_object.go
@@ -0,0 +1,374 @@
+package jsoniter
+
+import (
+        "reflect"
+        "unsafe"
+)
+
+type objectLazyAny struct {
+        baseAny
+        cfg *frozenConfig
+        buf []byte
+        err error
+}
+
+func (any *objectLazyAny) ValueType() ValueType {
+        return ObjectValue
+}
+
+func (any *objectLazyAny) MustBeValid() Any {
+        return any
+}
+
+func (any *objectLazyAny) LastError() error {
+        return any.err
+}
+
+func (any *objectLazyAny) ToBool() bool {
+        return true
+}
+
+func (any *objectLazyAny) ToInt() int {
+        return 0
+}
+
+func (any *objectLazyAny) ToInt32() int32 {
+        return 0
+}
+
+func (any *objectLazyAny) ToInt64() int64 {
+        return 0
+}
+
+func (any *objectLazyAny) ToUint() uint {
+        return 0
+}
+
+func (any *objectLazyAny) ToUint32() uint32 {
+        return 0
+}
+
+func (any *objectLazyAny) ToUint64() uint64 {
+        return 0
+}
+
+func (any *objectLazyAny) ToFloat32() float32 {
+        return 0
+}
+
+func (any *objectLazyAny) ToFloat64() float64 {
+        return 0
+}
+
+func (any *objectLazyAny) ToString() string {
+        return *(*string)(unsafe.Pointer(&any.buf))
+}
+
+func (any *objectLazyAny) ToVal(obj interface{}) {
+        iter := any.cfg.BorrowIterator(any.buf)
+        defer any.cfg.ReturnIterator(iter)
+        iter.ReadVal(obj)
+}
+
+func (any *objectLazyAny) Get(path ...interface{}) Any {
+        if len(path) == 0 {
+                return any
+        }
+        switch firstPath := path[0].(type) {
+        case string:
+                iter := any.cfg.BorrowIterator(any.buf)
+                defer any.cfg.ReturnIterator(iter)
+                valueBytes := locateObjectField(iter, firstPath)
+                if valueBytes == nil {
+                        return newInvalidAny(path)
+                }
+                iter.ResetBytes(valueBytes)
+                return locatePath(iter, path[1:])
+        case int32:
+                if '*' == firstPath {
+                        mappedAll := map[string]Any{}
+                        iter := any.cfg.BorrowIterator(any.buf)
+                        defer any.cfg.ReturnIterator(iter)
+                        iter.ReadMapCB(func(iter *Iterator, field string) bool {
+                                mapped := locatePath(iter, path[1:])
+                                if mapped.ValueType() != InvalidValue {
+                                        mappedAll[field] = mapped
+                                }
+                                return true
+                        })
+                        return wrapMap(mappedAll)
+                }
+                return newInvalidAny(path)
+        default:
+                return newInvalidAny(path)
+        }
+}
+
+func (any *objectLazyAny) Keys() []string {
+        keys := []string{}
+        iter := any.cfg.BorrowIterator(any.buf)
+        defer any.cfg.ReturnIterator(iter)
+        iter.ReadMapCB(func(iter *Iterator, field string) bool {
+                iter.Skip()
+                keys = append(keys, field)
+                return true
+        })
+        return keys
+}
+
+func (any *objectLazyAny) Size() int {
+        size := 0
+        iter := any.cfg.BorrowIterator(any.buf)
+        defer any.cfg.ReturnIterator(iter)
+        iter.ReadObjectCB(func(iter *Iterator, field string) bool {
+                iter.Skip()
+                size++
+                return true
+        })
+        return size
+}
+
+func (any *objectLazyAny) WriteTo(stream *Stream) {
+        stream.Write(any.buf)
+}
+
+func (any *objectLazyAny) GetInterface() interface{} {
+        iter := any.cfg.BorrowIterator(any.buf)
+        defer any.cfg.ReturnIterator(iter)
+        return iter.Read()
+}
+
+type objectAny struct {
+        baseAny
+        err error
+        val reflect.Value
+}
+
+func wrapStruct(val interface{}) *objectAny {
+        return &objectAny{baseAny{}, nil, reflect.ValueOf(val)}
+}
+
+func (any *objectAny) ValueType() ValueType {
+        return ObjectValue
+}
+
+func (any *objectAny) MustBeValid() Any {
+        return any
+}
+
+func (any *objectAny) Parse() *Iterator {
+        return nil
+}
+
+func (any *objectAny) LastError() error {
+        return any.err
+}
+
+func (any *objectAny) ToBool() bool {
+        return any.val.NumField() != 0
+}
+
+func (any *objectAny) ToInt() int {
+        return 0
+}
+
+func (any *objectAny) ToInt32() int32 {
+        return 0
+}
+
+func (any *objectAny) ToInt64() int64 {
+        return 0
+}
+
+func (any *objectAny) ToUint() uint {
+        return 0
+}
+
+func (any *objectAny) ToUint32() uint32 {
+        return 0
+}
+
+func (any *objectAny) ToUint64() uint64 {
+        return 0
+}
+
+func (any *objectAny) ToFloat32() float32 {
+        return 0
+}
+
+func (any *objectAny) ToFloat64() float64 {
+        return 0
+}
+
+func (any *objectAny) ToString() string {
+        str, err := MarshalToString(any.val.Interface())
+        any.err = err
+        return str
+}
+
+func (any *objectAny) Get(path ...interface{}) Any {
+        if len(path) == 0 {
+                return any
+        }
+        switch firstPath := path[0].(type) {
+        case string:
+                field := any.val.FieldByName(firstPath)
+                if !field.IsValid() {
+                        return newInvalidAny(path)
+                }
+                return Wrap(field.Interface())
+        case int32:
+                if '*' == firstPath {
+                        mappedAll := map[string]Any{}
+                        for i := 0; i < any.val.NumField(); i++ {
+                                field := any.val.Field(i)
+                                if field.CanInterface() {
+                                        mapped := Wrap(field.Interface()).Get(path[1:]...)
+                                        if mapped.ValueType() != InvalidValue {
+                                                mappedAll[any.val.Type().Field(i).Name] = mapped
+                                        }
+                                }
+                        }
+                        return wrapMap(mappedAll)
+                }
+                return newInvalidAny(path)
+        default:
+                return newInvalidAny(path)
+        }
+}
+
+func (any *objectAny) Keys() []string {
+        keys := make([]string, 0, any.val.NumField())
+        for i := 0; i < any.val.NumField(); i++ {
+                keys = append(keys, any.val.Type().Field(i).Name)
+        }
+        return keys
+}
+
+func (any *objectAny) Size() int {
+        return any.val.NumField()
+}
+
+func (any *objectAny) WriteTo(stream *Stream) {
+        stream.WriteVal(any.val)
+}
+
+func (any *objectAny) GetInterface() interface{} {
+        return any.val.Interface()
+}
+
+type mapAny struct {
+        baseAny
+        err error
+        val reflect.Value
+}
+
+func wrapMap(val interface{}) *mapAny {
+        return &mapAny{baseAny{}, nil, reflect.ValueOf(val)}
+}
+
+func (any *mapAny) ValueType() ValueType {
+        return ObjectValue
+}
+
+func (any *mapAny) MustBeValid() Any {
+        return any
+}
+
+func (any *mapAny) Parse() *Iterator {
+        return nil
+}
+
+func (any *mapAny) LastError() error {
+        return any.err
+}
+
+func (any *mapAny) ToBool() bool {
+        return true
+}
+
+func (any *mapAny) ToInt() int {
+        return 0
+}
+
+func (any *mapAny) ToInt32() int32 {
+        return 0
+}
+
+func (any *mapAny) ToInt64() int64 {
+        return 0
+}
+
+func (any *mapAny) ToUint() uint {
+        return 0
+}
+
+func (any *mapAny) ToUint32() uint32 {
+        return 0
+}
+
+func (any *mapAny) ToUint64() uint64 {
+        return 0
+}
+
+func (any *mapAny) ToFloat32() float32 {
+        return 0
+}
+
+func (any *mapAny) ToFloat64() float64 {
+        return 0
+}
+
+func (any *mapAny) ToString() string {
+        str, err := MarshalToString(any.val.Interface())
+        any.err = err
+        return str
+}
+
+func (any *mapAny) Get(path ...interface{}) Any {
+        if len(path) == 0 {
+                return any
+        }
+        switch firstPath := path[0].(type) {
+        case int32:
+                if '*' == firstPath {
+                        mappedAll := map[string]Any{}
+                        for _, key := range any.val.MapKeys() {
+                                keyAsStr := key.String()
+                                element := Wrap(any.val.MapIndex(key).Interface())
+                                mapped := element.Get(path[1:]...)
+                                if mapped.ValueType() != InvalidValue {
+                                        mappedAll[keyAsStr] = mapped
+                                }
+                        }
+                        return wrapMap(mappedAll)
+                }
+                return newInvalidAny(path)
+        default:
+                value := any.val.MapIndex(reflect.ValueOf(firstPath))
+                if !value.IsValid() {
+                        return newInvalidAny(path)
+                }
+                return Wrap(value.Interface())
+        }
+}
+
+func (any *mapAny) Keys() []string {
+        keys := make([]string, 0, any.val.Len())
+        for _, key := range any.val.MapKeys() {
+                keys = append(keys, key.String())
+        }
+        return keys
+}
+
+func (any *mapAny) Size() int {
+        return any.val.Len()
+}
+
+func (any *mapAny) WriteTo(stream *Stream) {
+        stream.WriteVal(any.val)
+}
+
+func (any *mapAny) GetInterface() interface{} {
+        return any.val.Interface()
+}
diff --git a/vendor/github.com/json-iterator/go/any_str.go b/vendor/github.com/json-iterator/go/any_str.go
new file mode 100644
index 0000000..1f12f66
--- /dev/null
+++ b/vendor/github.com/json-iterator/go/any_str.go
@@ -0,0 +1,166 @@
+package jsoniter
+
+import (
+        "fmt"
+        "strconv"
+)
+
+type stringAny struct {
+        baseAny
+        val string
+}
+
+func (any *stringAny) Get(path ...interface{}) Any {
+        if len(path) == 0 {
+                return any
+        }
+        return &invalidAny{baseAny{}, fmt.Errorf("GetIndex %v from simple value", path)}
+}
+
+func (any *stringAny) Parse() *Iterator {
+        return nil
+}
+
+func (any *stringAny) ValueType() ValueType {
+        return StringValue
+}
+
+func (any *stringAny) MustBeValid() Any {
+        return any
+}
+
+func (any *stringAny) LastError() error {
+        return nil
+}
+
+func (any *stringAny) ToBool() bool {
+        str := any.ToString()
+        if str == "0" {
+                return false
+        }
+        for _, c := range str {
+                switch c {
+                case ' ', '\n', '\r', '\t':
+                default:
+                        return true
+                }
+        }
+        return false
+}
+
+func (any *stringAny) ToInt() int {
+        return int(any.ToInt64())
+
+}
+
+func (any *stringAny) ToInt32() int32 {
+        return int32(any.ToInt64())
+}
+
+func (any *stringAny) ToInt64() int64 {
+        if any.val == "" {
+                return 0
+        }
+
+        flag := 1
+        startPos := 0
+        if any.val[0] == '+' || any.val[0] == '-' {
+                startPos = 1
+        }
+
+        if any.val[0] == '-' {
+                flag = -1
+        }
+
+        endPos := startPos
+        for i := startPos; i < len(any.val); i++ {
+                if any.val[i] >= '0' && any.val[i] <= '9' {
+                        endPos = i + 1
+                } else {
+                        break
+                }
+        }
+        parsed, _ := strconv.ParseInt(any.val[startPos:endPos], 10, 64)
+        return int64(flag) * parsed
+}
+
+func (any *stringAny) ToUint() uint {
+        return uint(any.ToUint64())
+}
+
+func (any *stringAny) ToUint32() uint32 {
+        return uint32(any.ToUint64())
+}
+
+func (any *stringAny) ToUint64() uint64 {
+        if any.val == "" {
+                return 0
+        }
+
+        startPos := 0
+
+        if any.val[0] == '-' {
+                return 0
+        }
+        if any.val[0] == '+' {
+                startPos = 1
+        }
+
+        endPos := startPos
+        for i := startPos; i < len(any.val); i++ {
+                if any.val[i] >= '0' && any.val[i] <= '9' {
+                        endPos = i + 1
+                } else {
+                        break
+                }
+        }
+        parsed, _ := strconv.ParseUint(any.val[startPos:endPos], 10, 64)
+        return parsed
+}
+
+func (any *stringAny) ToFloat32() float32 {
+        return float32(any.ToFloat64())
+}
+
+func (any *stringAny) ToFloat64() float64 {
+        if len(any.val) == 0 {
+                return 0
+        }
+
+        // first char invalid
+        if any.val[0] != '+' && any.val[0] != '-' && (any.val[0] > '9' || any.val[0] < '0') {
+                return 0
+        }
+
+        // extract valid num expression from string
+        // eg 123true => 123, -12.12xxa => -12.12
+        endPos := 1
+        for i := 1; i < len(any.val); i++ {
+                if any.val[i] == '.' || any.val[i] == 'e' || any.val[i] == 'E' || any.val[i] == '+' || any.val[i] == '-' {
+                        endPos = i + 1
+                        continue
+                }
+
+                // end position is the first char which is not digit
+                if any.val[i] >= '0' && any.val[i] <= '9' {
+                        endPos = i + 1
+                } else {
+                        endPos = i
+                        break
+                }
+        }
+        parsed, _ := strconv.ParseFloat(any.val[:endPos], 64)
+        return parsed
+}
+
+func (any *stringAny) ToString() string {
+        return any.val
+}
+
+func (any *stringAny) WriteTo(stream *Stream) {
+        stream.WriteString(any.val)
+}
+
+func (any *stringAny) GetInterface() interface{} {
+        return any.val
+}
diff --git a/vendor/github.com/json-iterator/go/any_uint32.go b/vendor/github.com/json-iterator/go/any_uint32.go
new file mode 100644
index 0000000..656bbd3
--- /dev/null
+++ b/vendor/github.com/json-iterator/go/any_uint32.go
@@ -0,0 +1,74 @@
+package jsoniter
+
+import (
+        "strconv"
+)
+
+type uint32Any struct {
+        baseAny
+        val uint32
+}
+
+func (any *uint32Any) LastError() error {
+        return nil
+}
+
+func (any *uint32Any) ValueType() ValueType {
+        return NumberValue
+}
+
+func (any *uint32Any) MustBeValid() Any {
+        return any
+}
+
+func (any *uint32Any) ToBool() bool {
+        return any.val != 0
+}
+
+func (any *uint32Any) ToInt() int {
+        return int(any.val)
+}
+
+func (any *uint32Any) ToInt32() int32 {
+        return int32(any.val)
+}
+
+func (any *uint32Any) ToInt64() int64 {
+        return int64(any.val)
+}
+
+func (any *uint32Any) ToUint() uint {
+        return uint(any.val)
+}
+
+func (any *uint32Any) ToUint32() uint32 {
+        return any.val
+}
+
+func (any *uint32Any) ToUint64() uint64 {
+        return uint64(any.val)
+}
+
+func (any *uint32Any) ToFloat32() float32 {
+        return float32(any.val)
+}
+
+func (any *uint32Any) ToFloat64() float64 {
+        return float64(any.val)
+}
+
+func (any *uint32Any) ToString() string {
+        return strconv.FormatInt(int64(any.val), 10)
+}
+
+func (any *uint32Any) WriteTo(stream *Stream) {
+        stream.WriteUint32(any.val)
+}
+
+func (any *uint32Any) Parse() *Iterator {
+        return nil
+}
+
+func (any *uint32Any) GetInterface() interface{} {
+        return any.val
+}
diff --git a/vendor/github.com/json-iterator/go/any_uint64.go b/vendor/github.com/json-iterator/go/any_uint64.go
new file mode 100644
index 0000000..7df2fce
--- /dev/null
+++ b/vendor/github.com/json-iterator/go/any_uint64.go
@@ -0,0 +1,74 @@
+package jsoniter
+
+import (
+        "strconv"
+)
+
+type uint64Any struct {
+        baseAny
+        val uint64
+}
+
+func (any *uint64Any) LastError() error {
+        return nil
+}
+
+func (any *uint64Any) ValueType() ValueType {
+        return NumberValue
+}
+
+func (any *uint64Any) MustBeValid() Any {
+        return any
+}
+
+func (any *uint64Any) ToBool() bool {
+        return any.val != 0
+}
+
+func (any *uint64Any) ToInt() int {
+        return int(any.val)
+}
+
+func (any *uint64Any) ToInt32() int32 {
+        return int32(any.val)
+}
+
+func (any *uint64Any) ToInt64() int64 {
+        return int64(any.val)
+}
+
+func (any *uint64Any) ToUint() uint {
+        return uint(any.val)
+}
+
+func (any *uint64Any) ToUint32() uint32 {
+        return uint32(any.val)
+}
+
+func (any *uint64Any) ToUint64() uint64 {
+        return any.val
+}
+
+func (any *uint64Any) ToFloat32() float32 {
+        return float32(any.val)
+}
+
+func (any *uint64Any) ToFloat64() float64 {
+        return float64(any.val)
+}
+
+func (any *uint64Any) ToString() string {
+        return strconv.FormatUint(any.val, 10)
+}
+
+func (any *uint64Any) WriteTo(stream *Stream) {
+        stream.WriteUint64(any.val)
+}
+
+func (any *uint64Any) Parse() *Iterator {
+        return nil
+}
+
+func (any *uint64Any) GetInterface() interface{} {
+        return any.val
+}
diff --git a/vendor/github.com/json-iterator/go/build.sh b/vendor/github.com/json-iterator/go/build.sh
new file mode 100644
index 0000000..b45ef68
--- /dev/null
+++ b/vendor/github.com/json-iterator/go/build.sh
@@ -0,0 +1,12 @@
+#!/bin/bash
+set -e
+set -x
+
+if [ ! -d /tmp/build-golang/src/github.com/json-iterator ]; then
+    mkdir -p /tmp/build-golang/src/github.com/json-iterator
+    ln -s $PWD /tmp/build-golang/src/github.com/json-iterator/go
+fi
+export GOPATH=/tmp/build-golang
+go get -u github.com/golang/dep/cmd/dep
+cd /tmp/build-golang/src/github.com/json-iterator/go
+exec $GOPATH/bin/dep ensure -update
diff --git a/vendor/github.com/json-iterator/go/config.go b/vendor/github.com/json-iterator/go/config.go
new file mode 100644
index 0000000..2adcdc3
--- /dev/null
+++ b/vendor/github.com/json-iterator/go/config.go
@@ -0,0 +1,375 @@
+package jsoniter
+
+import (
+        "encoding/json"
+        "io"
+        "reflect"
+        "sync"
+        "unsafe"
+
+        "github.com/modern-go/concurrent"
+        "github.com/modern-go/reflect2"
+)
+
+// Config customize how the API should behave.
+// The API is created from Config by Froze.
+type Config struct {
+        IndentionStep                 int
+        MarshalFloatWith6Digits       bool
+        EscapeHTML                    bool
+        SortMapKeys                   bool
+        UseNumber                     bool
+        DisallowUnknownFields         bool
+        TagKey                        string
+        OnlyTaggedField               bool
+        ValidateJsonRawMessage        bool
+        ObjectFieldMustBeSimpleString bool
+        CaseSensitive                 bool
+}
+
+// API the public interface of this package.
+// Primary Marshal and Unmarshal.
+type API interface {
+        IteratorPool
+        StreamPool
+        MarshalToString(v interface{}) (string, error)
+        Marshal(v interface{}) ([]byte, error)
+        MarshalIndent(v interface{}, prefix, indent string) ([]byte, error)
+        UnmarshalFromString(str string, v interface{}) error
+        Unmarshal(data []byte, v interface{}) error
+        Get(data []byte, path ...interface{}) Any
+        NewEncoder(writer io.Writer) *Encoder
+        NewDecoder(reader io.Reader) *Decoder
+        Valid(data []byte) bool
+        RegisterExtension(extension Extension)
+        DecoderOf(typ reflect2.Type) ValDecoder
+        EncoderOf(typ reflect2.Type) ValEncoder
+}
+
+// ConfigDefault the default API
+var ConfigDefault = Config{
+        EscapeHTML: true,
+}.Froze()
+
+// ConfigCompatibleWithStandardLibrary tries to be 100% compatible with standard library behavior
+var ConfigCompatibleWithStandardLibrary = Config{
+        EscapeHTML:             true,
+        SortMapKeys:            true,
+        ValidateJsonRawMessage: true,
+}.Froze()
+
+// ConfigFastest marshals float with only 6 digits precision
+var ConfigFastest = Config{
+        EscapeHTML:                    false,
+        MarshalFloatWith6Digits:       true, // will lose precession
+        ObjectFieldMustBeSimpleString: true, // do not unescape object field
+}.Froze()
+
+type frozenConfig struct {
+        configBeforeFrozen            Config
+        sortMapKeys                   bool
+        indentionStep                 int
+        objectFieldMustBeSimpleString bool
+        onlyTaggedField               bool
+        disallowUnknownFields         bool
+        decoderCache                  *concurrent.Map
+        encoderCache                  *concurrent.Map
+        encoderExtension              Extension
+        decoderExtension              Extension
+        extraExtensions               []Extension
+        streamPool                    *sync.Pool
+        iteratorPool                  *sync.Pool
+        caseSensitive                 bool
+}
+
+func (cfg *frozenConfig) initCache() {
+        cfg.decoderCache = concurrent.NewMap()
+        cfg.encoderCache = concurrent.NewMap()
+}
+
+func (cfg *frozenConfig) addDecoderToCache(cacheKey uintptr, decoder ValDecoder) {
+        cfg.decoderCache.Store(cacheKey, decoder)
+}
+
+func (cfg *frozenConfig) addEncoderToCache(cacheKey uintptr, encoder ValEncoder) {
+        cfg.encoderCache.Store(cacheKey, encoder)
+}
+
+func (cfg *frozenConfig) getDecoderFromCache(cacheKey uintptr) ValDecoder {
+        decoder, found := cfg.decoderCache.Load(cacheKey)
+        if found {
+                return decoder.(ValDecoder)
+        }
+        return nil
+}
+
+func (cfg *frozenConfig) getEncoderFromCache(cacheKey uintptr) ValEncoder {
+        encoder, found := cfg.encoderCache.Load(cacheKey)
+        if found {
+                return encoder.(ValEncoder)
+        }
+        return nil
+}
+
+var cfgCache = concurrent.NewMap()
+
+func getFrozenConfigFromCache(cfg Config) *frozenConfig {
+        obj, found := cfgCache.Load(cfg)
+        if found {
+                return obj.(*frozenConfig)
+        }
+        return nil
+}
+
+func addFrozenConfigToCache(cfg Config, frozenConfig *frozenConfig) {
+        cfgCache.Store(cfg, frozenConfig)
+}
+
+// Froze forge API from config
+func (cfg Config) Froze() API {
+        api := &frozenConfig{
+                sortMapKeys:                   cfg.SortMapKeys,
+                indentionStep:                 cfg.IndentionStep,
+                objectFieldMustBeSimpleString: cfg.ObjectFieldMustBeSimpleString,
+                onlyTaggedField:               cfg.OnlyTaggedField,
+                disallowUnknownFields:         cfg.DisallowUnknownFields,
+                caseSensitive:                 cfg.CaseSensitive,
+        }
+        api.streamPool = &sync.Pool{
+                New: func() interface{} {
+                        return NewStream(api, nil, 512)
+                },
+        }
+        api.iteratorPool = &sync.Pool{
+                New: func() interface{} {
+                        return NewIterator(api)
+                },
+        }
+        api.initCache()
+        encoderExtension := EncoderExtension{}
+        decoderExtension := DecoderExtension{}
+        if cfg.MarshalFloatWith6Digits {
+                api.marshalFloatWith6Digits(encoderExtension)
+        }
+        if cfg.EscapeHTML {
+                api.escapeHTML(encoderExtension)
+        }
+        if cfg.UseNumber {
+                api.useNumber(decoderExtension)
+        }
+        if cfg.ValidateJsonRawMessage {
+                api.validateJsonRawMessage(encoderExtension)
+        }
+        api.encoderExtension = encoderExtension
+        api.decoderExtension = decoderExtension
+        api.configBeforeFrozen = cfg
+        return api
+}
+
+func (cfg Config) frozeWithCacheReuse(extraExtensions []Extension) *frozenConfig {
+        api := getFrozenConfigFromCache(cfg)
+        if api != nil {
+                return api
+        }
+        api = cfg.Froze().(*frozenConfig)
+        for _, extension := range extraExtensions {
+                api.RegisterExtension(extension)
+        }
+        addFrozenConfigToCache(cfg, api)
+        return api
+}
+
+func (cfg *frozenConfig) validateJsonRawMessage(extension EncoderExtension) {
+        encoder := &funcEncoder{func(ptr unsafe.Pointer, stream *Stream) {
+                rawMessage := *(*json.RawMessage)(ptr)
+                iter := cfg.BorrowIterator([]byte(rawMessage))
+                defer cfg.ReturnIterator(iter)
+                iter.Read()
+                if iter.Error != nil && iter.Error != io.EOF {
+                        stream.WriteRaw("null")
+                } else {
+                        stream.WriteRaw(string(rawMessage))
+                }
+        }, func(ptr unsafe.Pointer) bool {
+                return len(*((*json.RawMessage)(ptr))) == 0
+        }}
+        extension[reflect2.TypeOfPtr((*json.RawMessage)(nil)).Elem()] = encoder
+        extension[reflect2.TypeOfPtr((*RawMessage)(nil)).Elem()] = encoder
+}
+
+func (cfg *frozenConfig) useNumber(extension DecoderExtension) {
+        extension[reflect2.TypeOfPtr((*interface{})(nil)).Elem()] = &funcDecoder{func(ptr unsafe.Pointer, iter *Iterator) {
+                exitingValue := *((*interface{})(ptr))
+                if exitingValue != nil && reflect.TypeOf(exitingValue).Kind() == reflect.Ptr {
+                        iter.ReadVal(exitingValue)
+                        return
+                }
+                if iter.WhatIsNext() == NumberValue {
+                        *((*interface{})(ptr)) = json.Number(iter.readNumberAsString())
+                } else {
+                        *((*interface{})(ptr)) = iter.Read()
+                }
+        }}
+}
+func (cfg *frozenConfig) getTagKey() string {
+        tagKey := cfg.configBeforeFrozen.TagKey
+        if tagKey == "" {
+                return "json"
+        }
+        return tagKey
+}
+
+func (cfg *frozenConfig) RegisterExtension(extension Extension) {
+        cfg.extraExtensions = append(cfg.extraExtensions, extension)
+        copied := cfg.configBeforeFrozen
+        cfg.configBeforeFrozen = copied
+}
+
+type lossyFloat32Encoder struct {
+}
+
+func (encoder *lossyFloat32Encoder) Encode(ptr unsafe.Pointer, stream *Stream) {
+        stream.WriteFloat32Lossy(*((*float32)(ptr)))
+}
+
+func (encoder *lossyFloat32Encoder) IsEmpty(ptr unsafe.Pointer) bool {
+        return *((*float32)(ptr)) == 0
+}
+
+type lossyFloat64Encoder struct {
+}
+
+func (encoder *lossyFloat64Encoder) Encode(ptr unsafe.Pointer, stream *Stream) {
+        stream.WriteFloat64Lossy(*((*float64)(ptr)))
+}
+
+func (encoder *lossyFloat64Encoder) IsEmpty(ptr unsafe.Pointer) bool {
+        return *((*float64)(ptr)) == 0
+}
+
+// EnableLossyFloatMarshalling keeps 10**(-6) precision
+// for float variables for better performance.
+func (cfg *frozenConfig) marshalFloatWith6Digits(extension EncoderExtension) {
+        // for better performance
+        extension[reflect2.TypeOfPtr((*float32)(nil)).Elem()] = &lossyFloat32Encoder{}
+        extension[reflect2.TypeOfPtr((*float64)(nil)).Elem()] = &lossyFloat64Encoder{}
+}
+
+type htmlEscapedStringEncoder struct {
+}
+
+func (encoder *htmlEscapedStringEncoder) Encode(ptr unsafe.Pointer, stream *Stream) {
+        str := *((*string)(ptr))
+        stream.WriteStringWithHTMLEscaped(str)
+}
+
+func (encoder *htmlEscapedStringEncoder) IsEmpty(ptr unsafe.Pointer) bool {
+        return *((*string)(ptr)) == ""
+}
+
+func (cfg *frozenConfig) escapeHTML(encoderExtension EncoderExtension) {
+        encoderExtension[reflect2.TypeOfPtr((*string)(nil)).Elem()] = &htmlEscapedStringEncoder{}
+}
+
+func (cfg *frozenConfig) cleanDecoders() {
+        typeDecoders = map[string]ValDecoder{}
+        fieldDecoders = map[string]ValDecoder{}
+        *cfg = *(cfg.configBeforeFrozen.Froze().(*frozenConfig))
+}
+
+func (cfg *frozenConfig) cleanEncoders() {
+        typeEncoders = map[string]ValEncoder{}
+        fieldEncoders = map[string]ValEncoder{}
+        *cfg = *(cfg.configBeforeFrozen.Froze().(*frozenConfig))
+}
+
+func (cfg *frozenConfig) MarshalToString(v interface{}) (string, error) {
+        stream := cfg.BorrowStream(nil)
+        defer cfg.ReturnStream(stream)
+        stream.WriteVal(v)
+        if stream.Error != nil {
+                return "", stream.Error
+        }
+        return string(stream.Buffer()), nil
+}
+
+func (cfg *frozenConfig) Marshal(v interface{}) ([]byte, error) {
+        stream := cfg.BorrowStream(nil)
+        defer cfg.ReturnStream(stream)
+        stream.WriteVal(v)
+        if stream.Error != nil {
+                return nil, stream.Error
+        }
+        result := stream.Buffer()
+        copied := make([]byte, len(result))
+        copy(copied, result)
+        return copied, nil
+}
+
+func (cfg *frozenConfig) MarshalIndent(v interface{}, prefix, indent string) ([]byte, error) {
+        if prefix != "" {
+                panic("prefix is not supported")
+        }
+        for _, r := range indent {
+                if r != ' ' {
+                        panic("indent can only be space")
+                }
+        }
+        newCfg := cfg.configBeforeFrozen
+        newCfg.IndentionStep = len(indent)
+        return newCfg.frozeWithCacheReuse(cfg.extraExtensions).Marshal(v)
+}
+
+func (cfg *frozenConfig) UnmarshalFromString(str string, v interface{}) error {
+        data := []byte(str)
+        iter := cfg.BorrowIterator(data)
+        defer cfg.ReturnIterator(iter)
+        iter.ReadVal(v)
+        c := iter.nextToken()
+        if c == 0 {
+                if iter.Error == io.EOF {
+                        return nil
+                }
+                return iter.Error
+        }
+        iter.ReportError("Unmarshal", "there are bytes left after unmarshal")
+        return iter.Error
+}
+
+func (cfg *frozenConfig) Get(data []byte, path ...interface{}) Any {
+        iter := cfg.BorrowIterator(data)
+        defer cfg.ReturnIterator(iter)
+        return locatePath(iter, path)
+}
+
+func (cfg *frozenConfig) Unmarshal(data []byte, v interface{}) error {
+        iter := cfg.BorrowIterator(data)
+        defer cfg.ReturnIterator(iter)
+        iter.ReadVal(v)
+        c := iter.nextToken()
+        if c == 0 {
+                if iter.Error == io.EOF {
+                        return nil
+                }
+                return iter.Error
+        }
+        iter.ReportError("Unmarshal", "there are bytes left after unmarshal")
+        return iter.Error
+}
+
+func (cfg *frozenConfig) NewEncoder(writer io.Writer) *Encoder {
+        stream := NewStream(cfg, writer, 512)
+        return &Encoder{stream}
+}
+
+func (cfg *frozenConfig) NewDecoder(reader io.Reader) *Decoder {
+        iter := Parse(cfg, reader, 512)
+        return &Decoder{iter}
+}
+
+func (cfg *frozenConfig) Valid(data []byte) bool {
+        iter := cfg.BorrowIterator(data)
+        defer cfg.ReturnIterator(iter)
+        iter.Skip()
+        return iter.Error == nil
+}
diff --git a/vendor/github.com/json-iterator/go/fuzzy_mode_convert_table.md b/vendor/github.com/json-iterator/go/fuzzy_mode_convert_table.md
new file mode 100644
index 0000000..3095662
--- /dev/null
+++ b/vendor/github.com/json-iterator/go/fuzzy_mode_convert_table.md
@@ -0,0 +1,7 @@
+| json type \ dest type | bool | int | uint | float |string|
+| --- | --- | --- | --- |--|--|
+| number | positive => true <br/> negative => true <br/> zero => false| 23.2 => 23 <br/> -32.1 => -32| 12.1 => 12 <br/> -12.1 => 0|as normal|same as origin|
+| string | empty string => false <br/> string "0" => false <br/> other strings => true | "123.32" => 123 <br/> "-123.4" => -123 <br/> "123.23xxxw" => 123 <br/>  "abcde12" => 0 <br/> "-32.1" => -32| 13.2 => 13 <br/> -1.1 => 0 |12.1 => 12.1 <br/> -12.3 => -12.3<br/> 12.4xxa => 12.4 <br/> +1.1e2 =>110 |same as origin|
+| bool | true => true <br/> false => false| true => 1 <br/> false => 0 | true => 1 <br/> false => 0 |true => 1 <br/>false => 0|true => "true" <br/> false => "false"|
+| object | true | 0 | 0 |0|originnal json|
+| array | empty array => false <br/> nonempty array => true| [] => 0 <br/> [1,2] => 1 | [] => 0 <br/> [1,2] => 1 |[] => 0<br/>[1,2] => 1|original json|
\ No newline at end of file
diff --git a/vendor/github.com/json-iterator/go/iter.go b/vendor/github.com/json-iterator/go/iter.go
new file mode 100644
index 0000000..29b31cf
--- /dev/null
+++ b/vendor/github.com/json-iterator/go/iter.go
@@ -0,0 +1,349 @@
+package jsoniter
+
+import (
+        "encoding/json"
+        "fmt"
+        "io"
+)
+
+// ValueType the type for JSON element
+type ValueType int
+
+const (
+        // InvalidValue invalid JSON element
+        InvalidValue ValueType = iota
+        // StringValue JSON element "string"
+        StringValue
+        // NumberValue JSON element 100 or 0.10
+        NumberValue
+        // NilValue JSON element null
+        NilValue
+        // BoolValue JSON element true or false
+        BoolValue
+        // ArrayValue JSON element []
+        ArrayValue
+        // ObjectValue JSON element {}
+        ObjectValue
+)
+
+var hexDigits []byte
+var valueTypes []ValueType
+
+func init() {
+        hexDigits = make([]byte, 256)
+        for i := 0; i < len(hexDigits); i++ {
+                hexDigits[i] = 255
+        }
+        for i := '0'; i <= '9'; i++ {
+                hexDigits[i] = byte(i - '0')
+        }
+        for i := 'a'; i <= 'f'; i++ {
+                hexDigits[i] = byte((i - 'a') + 10)
+        }
+        for i := 'A'; i <= 'F'; i++ {
+                hexDigits[i] = byte((i - 'A') + 10)
+        }
+        valueTypes = make([]ValueType, 256)
+        for i := 0; i < len(valueTypes); i++ {
+                valueTypes[i] = InvalidValue
+        }
+        valueTypes['"'] = StringValue
+        valueTypes['-'] = NumberValue
+        valueTypes['0'] = NumberValue
+        valueTypes['1'] = NumberValue
+        valueTypes['2'] = NumberValue
+        valueTypes['3'] = NumberValue
+        valueTypes['4'] = NumberValue
+        valueTypes['5'] = NumberValue
+        valueTypes['6'] = NumberValue
+        valueTypes['7'] = NumberValue
+        valueTypes['8'] = NumberValue
+        valueTypes['9'] = NumberValue
+        valueTypes['t'] = BoolValue
+        valueTypes['f'] = BoolValue
+        valueTypes['n'] = NilValue
+        valueTypes['['] = ArrayValue
+        valueTypes['{'] = ObjectValue
+}
+
+// Iterator is a io.Reader like object, with JSON specific read functions.
+// Error is not returned as return value, but stored as Error member on this iterator instance.
+type Iterator struct {
+        cfg              *frozenConfig
+        reader           io.Reader
+        buf              []byte
+        head             int
+        tail             int
+        depth            int
+        captureStartedAt int
+        captured         []byte
+        Error            error
+        Attachment       interface{} // open for customized decoder
+}
+
+// NewIterator creates an empty Iterator instance
+func NewIterator(cfg API) *Iterator {
+        return &Iterator{
+                cfg:    cfg.(*frozenConfig),
+                reader: nil,
+                buf:    nil,
+                head:   0,
+                tail:   0,
+                depth:  0,
+        }
+}
+
+// Parse creates an Iterator instance from io.Reader
+func Parse(cfg API, reader io.Reader, bufSize int) *Iterator {
+        return &Iterator{
+                cfg:    cfg.(*frozenConfig),
+                reader: reader,
+                buf:    make([]byte, bufSize),
+                head:   0,
+                tail:   0,
+                depth:  0,
+        }
+}
+
+// ParseBytes creates an Iterator instance from byte array
+func ParseBytes(cfg API, input []byte) *Iterator {
+        return &Iterator{
+                cfg:    cfg.(*frozenConfig),
+                reader: nil,
+                buf:    input,
+                head:   0,
+                tail:   len(input),
+                depth:  0,
+        }
+}
+
+// ParseString creates an Iterator instance from string
+func ParseString(cfg API, input string) *Iterator {
+        return ParseBytes(cfg, []byte(input))
+}
+
+// Pool returns a pool can provide more iterator with same configuration
+func (iter *Iterator) Pool() IteratorPool {
+        return iter.cfg
+}
+
+// Reset reuse iterator instance by specifying another reader
+func (iter *Iterator) Reset(reader io.Reader) *Iterator {
+        iter.reader = reader
+        iter.head = 0
+        iter.tail = 0
+        iter.depth = 0
+        return iter
+}
+
+// ResetBytes reuse iterator instance by specifying another byte array as input
+func (iter *Iterator) ResetBytes(input []byte) *Iterator {
+        iter.reader = nil
+        iter.buf = input
+        iter.head = 0
+        iter.tail = len(input)
+        iter.depth = 0
+        return iter
+}
+
+// WhatIsNext gets ValueType of relatively next json element
+func (iter *Iterator) WhatIsNext() ValueType {
+        valueType := valueTypes[iter.nextToken()]
+        iter.unreadByte()
+        return valueType
+}
+
+func (iter *Iterator) skipWhitespacesWithoutLoadMore() bool {
+        for i := iter.head; i < iter.tail; i++ {
+                c := iter.buf[i]
+                switch c {
+                case ' ', '\n', '\t', '\r':
+                        continue
+                }
+                iter.head = i
+                return false
+        }
+        return true
+}
+
+func (iter *Iterator) isObjectEnd() bool {
+        c := iter.nextToken()
+        if c == ',' {
+                return false
+        }
+        if c == '}' {
+                return true
+        }
+        iter.ReportError("isObjectEnd", "object ended prematurely, unexpected char "+string([]byte{c}))
+        return true
+}
+
+func (iter *Iterator) nextToken() byte {
+        // a variation of skip whitespaces, returning the next non-whitespace token
+        for {
+                for i := iter.head; i < iter.tail; i++ {
+                        c := iter.buf[i]
+                        switch c {
+                        case ' ', '\n', '\t', '\r':
+                                continue
+                        }
+                        iter.head = i + 1
+                        return c
+                }
+                if !iter.loadMore() {
+                        return 0
+                }
+        }
+}
+
+// ReportError record a error in iterator instance with current position.
+func (iter *Iterator) ReportError(operation string, msg string) {
+        if iter.Error != nil {
+                if iter.Error != io.EOF {
+                        return
+                }
+        }
+        peekStart := iter.head - 10
+        if peekStart < 0 {
+                peekStart = 0
+        }
+        peekEnd := iter.head + 10
+        if peekEnd > iter.tail {
+                peekEnd = iter.tail
+        }
+        parsing := string(iter.buf[peekStart:peekEnd])
+        contextStart := iter.head - 50
+        if contextStart < 0 {
+                contextStart = 0
+        }
+        contextEnd := iter.head + 50
+        if contextEnd > iter.tail {
+                contextEnd = iter.tail
+        }
+        context := string(iter.buf[contextStart:contextEnd])
+        iter.Error = fmt.Errorf("%s: %s, error found in #%v byte of ...|%s|..., bigger context ...|%s|...",
+                operation, msg, iter.head-peekStart, parsing, context)
+}
+
+// CurrentBuffer gets current buffer as string for debugging purpose
+func (iter *Iterator) CurrentBuffer() string {
+        peekStart := iter.head - 10
+        if peekStart < 0 {
+                peekStart = 0
+        }
+        return fmt.Sprintf("parsing #%v byte, around ...|%s|..., whole buffer ...|%s|...", iter.head,
+                string(iter.buf[peekStart:iter.head]), string(iter.buf[0:iter.tail]))
+}
+
+func (iter *Iterator) readByte() (ret byte) {
+        if iter.head == iter.tail {
+                if iter.loadMore() {
+                        ret = iter.buf[iter.head]
+                        iter.head++
+                        return ret
+                }
+                return 0
+        }
+        ret = iter.buf[iter.head]
+        iter.head++
+        return ret
+}
+
+func (iter *Iterator) loadMore() bool {
+        if iter.reader == nil {
+                if iter.Error == nil {
+                        iter.head = iter.tail
+                        iter.Error = io.EOF
+                }
+                return false
+        }
+        if iter.captured != nil {
+                iter.captured = append(iter.captured,
+                        iter.buf[iter.captureStartedAt:iter.tail]...)
+                iter.captureStartedAt = 0
+        }
+        for {
+                n, err := iter.reader.Read(iter.buf)
+                if n == 0 {
+                        if err != nil {
+                                if iter.Error == nil {
+                                        iter.Error = err
+                                }
+                                return false
+                        }
+                } else {
+                        iter.head = 0
+                        iter.tail = n
+                        return true
+                }
+        }
+}
+
+func (iter *Iterator) unreadByte() {
+        if iter.Error != nil {
+                return
+        }
+        iter.head--
+        return
+}
+
+// Read read the next JSON element as generic interface{}.
+func (iter *Iterator) Read() interface{} {
+        valueType := iter.WhatIsNext()
+        switch valueType {
+        case StringValue:
+                return iter.ReadString()
+        case NumberValue:
+                if iter.cfg.configBeforeFrozen.UseNumber {
+                        return json.Number(iter.readNumberAsString())
+                }
+                return iter.ReadFloat64()
+        case NilValue:
+                iter.skipFourBytes('n', 'u', 'l', 'l')
+                return nil
+        case BoolValue:
+                return iter.ReadBool()
+        case ArrayValue:
+                arr := []interface{}{}
+                iter.ReadArrayCB(func(iter *Iterator) bool {
+                        var elem interface{}
+                        iter.ReadVal(&elem)
+                        arr = append(arr, elem)
+                        return true
+                })
+                return arr
+        case ObjectValue:
+                obj := map[string]interface{}{}
+                iter.ReadMapCB(func(Iter *Iterator, field string) bool {
+                        var elem interface{}
+                        iter.ReadVal(&elem)
+                        obj[field] = elem
+                        return true
+                })
+                return obj
+        default:
+                iter.ReportError("Read", fmt.Sprintf("unexpected value type: %v", valueType))
+                return nil
+        }
+}
+
+// limit maximum depth of nesting, as allowed by https://tools.ietf.org/html/rfc7159#section-9
+const maxDepth = 10000
+
+func (iter *Iterator) incrementDepth() (success bool) {
+        iter.depth++
+        if iter.depth <= maxDepth {
+                return true
+        }
+        iter.ReportError("incrementDepth", "exceeded max depth")
+        return false
+}
+
+func (iter *Iterator) decrementDepth() (success bool) {
+        iter.depth--
+        if iter.depth >= 0 {
+                return true
+        }
+        iter.ReportError("decrementDepth", "unexpected negative nesting")
+        return false
+}
diff --git a/vendor/github.com/json-iterator/go/iter_array.go b/vendor/github.com/json-iterator/go/iter_array.go
new file mode 100644
index 0000000..204fe0e
--- /dev/null
+++ b/vendor/github.com/json-iterator/go/iter_array.go
@@ -0,0 +1,64 @@
+package jsoniter
+
+// ReadArray read array element, tells if the array has more element to read.
+func (iter *Iterator) ReadArray() (ret bool) {
+        c := iter.nextToken()
+        switch c {
+        case 'n':
+                iter.skipThreeBytes('u', 'l', 'l')
+                return false // null
+        case '[':
+                c = iter.nextToken()
+                if c != ']' {
+                        iter.unreadByte()
+                        return true
+                }
+                return false
+        case ']':
+                return false
+        case ',':
+                return true
+        default:
+                iter.ReportError("ReadArray", "expect [ or , or ] or n, but found "+string([]byte{c}))
+                return
+        }
+}
+
+// ReadArrayCB read array with callback
+func (iter *Iterator) ReadArrayCB(callback func(*Iterator) bool) (ret bool) {
+        c := iter.nextToken()
+        if c == '[' {
+                if !iter.incrementDepth() {
+                        return false
+                }
+                c = iter.nextToken()
+                if c != ']' {
+                        iter.unreadByte()
+                        if !callback(iter) {
+                                iter.decrementDepth()
+                                return false
+                        }
+                        c = iter.nextToken()
+                        for c == ',' {
+                                if !callback(iter) {
+                                        iter.decrementDepth()
+                                        return false
+                                }
+                                c = iter.nextToken()
+                        }
+                        if c != ']' {
+                                iter.ReportError("ReadArrayCB", "expect ] in the end, but found "+string([]byte{c}))
+                                iter.decrementDepth()
+                                return false
+                        }
+                        return iter.decrementDepth()
+                }
+                return iter.decrementDepth()
+        }
+        if c == 'n' {
+                iter.skipThreeBytes('u', 'l', 'l')
+                return true // null
+        }
+        iter.ReportError("ReadArrayCB", "expect [ or n, but found "+string([]byte{c}))
+        return false
+}
diff --git a/vendor/github.com/json-iterator/go/iter_float.go b/vendor/github.com/json-iterator/go/iter_float.go
new file mode 100644
index 0000000..8a3d8b6
--- /dev/null
+++ b/vendor/github.com/json-iterator/go/iter_float.go
@@ -0,0 +1,342 @@
+package jsoniter
+
+import (
+        "encoding/json"
+        "io"
+        "math/big"
+        "strconv"
+        "strings"
+        "unsafe"
+)
+
+var floatDigits []int8
+
+const invalidCharForNumber = int8(-1)
+const endOfNumber = int8(-2)
+const dotInNumber = int8(-3)
+
+func init() {
+        floatDigits = make([]int8, 256)
+        for i := 0; i < len(floatDigits); i++ {
+                floatDigits[i] = invalidCharForNumber
+        }
+        for i := int8('0'); i <= int8('9'); i++ {
+                floatDigits[i] = i - int8('0')
+        }
+        floatDigits[','] = endOfNumber
+        floatDigits[']'] = endOfNumber
+        floatDigits['}'] = endOfNumber
+        floatDigits[' '] = endOfNumber
+        floatDigits['\t'] = endOfNumber
+        floatDigits['\n'] = endOfNumber
+        floatDigits['.'] = dotInNumber
+}
+
+// ReadBigFloat read big.Float
+func (iter *Iterator) ReadBigFloat() (ret *big.Float) {
+        str := iter.readNumberAsString()
+        if iter.Error != nil && iter.Error != io.EOF {
+                return nil
+        }
+        prec := 64
+        if len(str) > prec {
+                prec = len(str)
+        }
+        val, _, err := big.ParseFloat(str, 10, uint(prec), big.ToZero)
+        if err != nil {
+                iter.Error = err
+                return nil
+        }
+        return val
+}
+
+// ReadBigInt read big.Int
+func (iter *Iterator) ReadBigInt() (ret *big.Int) {
+        str := iter.readNumberAsString()
+        if iter.Error != nil && iter.Error != io.EOF {
+                return nil
+        }
+        ret = big.NewInt(0)
+        var success bool
+        ret, success = ret.SetString(str, 10)
+        if !success {
+                iter.ReportError("ReadBigInt", "invalid big int")
+                return nil
+        }
+        return ret
+}
+
+//ReadFloat32 read float32
+func (iter *Iterator) ReadFloat32() (ret float32) {
+        c := iter.nextToken()
+        if c == '-' {
+                return -iter.readPositiveFloat32()
+        }
+        iter.unreadByte()
+        return iter.readPositiveFloat32()
+}
+
+func (iter *Iterator) readPositiveFloat32() (ret float32) {
+        i := iter.head
+        // first char
+        if i == iter.tail {
+                return iter.readFloat32SlowPath()
+        }
+        c := iter.buf[i]
+        i++
+        ind := floatDigits[c]
+        switch ind {
+        case invalidCharForNumber:
+                return iter.readFloat32SlowPath()
+        case endOfNumber:
+                iter.ReportError("readFloat32", "empty number")
+                return
+        case dotInNumber:
+                iter.ReportError("readFloat32", "leading dot is invalid")
+                return
+        case 0:
+                if i == iter.tail {
+                        return iter.readFloat32SlowPath()
+                }
+                c = iter.buf[i]
+                switch c {
+                case '0', '1', '2', '3', '4', '5', '6', '7', '8', '9':
+                        iter.ReportError("readFloat32", "leading zero is invalid")
+                        return
+                }
+        }
+        value := uint64(ind)
+        // chars before dot
+non_decimal_loop:
+        for ; i < iter.tail; i++ {
+                c = iter.buf[i]
+                ind := floatDigits[c]
+                switch ind {
+                case invalidCharForNumber:
+                        return iter.readFloat32SlowPath()
+                case endOfNumber:
+                        iter.head = i
+                        return float32(value)
+                case dotInNumber:
+                        break non_decimal_loop
+                }
+                if value > uint64SafeToMultiple10 {
+                        return iter.readFloat32SlowPath()
+                }
+                value = (value << 3) + (value << 1) + uint64(ind) // value = value * 10 + ind;
+        }
+        // chars after dot
+        if c == '.' {
+                i++
+                decimalPlaces := 0
+                if i == iter.tail {
+                        return iter.readFloat32SlowPath()
+                }
+                for ; i < iter.tail; i++ {
+                        c = iter.buf[i]
+                        ind := floatDigits[c]
+                        switch ind {
+                        case endOfNumber:
+                                if decimalPlaces > 0 && decimalPlaces < len(pow10) {
+                                        iter.head = i
+                                        return float32(float64(value) / float64(pow10[decimalPlaces]))
+                                }
+                                // too many decimal places
+                                return iter.readFloat32SlowPath()
+                        case invalidCharForNumber, dotInNumber:
+                                return iter.readFloat32SlowPath()
+                        }
+                        decimalPlaces++
+                        if value > uint64SafeToMultiple10 {
+                                return iter.readFloat32SlowPath()
+                        }
+                        value = (value << 3) + (value << 1) + uint64(ind)
+                }
+        }
+        return iter.readFloat32SlowPath()
+}
+
+func (iter *Iterator) readNumberAsString() (ret string) {
+        strBuf := [16]byte{}
+        str := strBuf[0:0]
+load_loop:
+        for {
+                for i := iter.head; i < iter.tail; i++ {
+                        c := iter.buf[i]
+                        switch c {
+                        case '+', '-', '.', 'e', 'E', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9':
+                                str = append(str, c)
+                                continue
+                        default:
+                                iter.head = i
+                                break load_loop
+                        }
+                }
+                if !iter.loadMore() {
+                        break
+                }
+        }
+        if iter.Error != nil && iter.Error != io.EOF {
+                return
+        }
+        if len(str) == 0 {
+                iter.ReportError("readNumberAsString", "invalid number")
+        }
+        return *(*string)(unsafe.Pointer(&str))
+}
+
+func (iter *Iterator) readFloat32SlowPath() (ret float32) {
+        str := iter.readNumberAsString()
+        if iter.Error != nil && iter.Error != io.EOF {
+                return
+        }
+        errMsg := validateFloat(str)
+        if errMsg != "" {
+                iter.ReportError("readFloat32SlowPath", errMsg)
+                return
+        }
+        val, err := strconv.ParseFloat(str, 32)
+        if err != nil {
+                iter.Error = err
+                return
+        }
+        return float32(val)
+}
+
+// ReadFloat64 read float64
+func (iter *Iterator) ReadFloat64() (ret float64) {
+        c := iter.nextToken()
+        if c == '-' {
+                return -iter.readPositiveFloat64()
+        }
+        iter.unreadByte()
+        return iter.readPositiveFloat64()
+}
+
+func (iter *Iterator) readPositiveFloat64() (ret float64) {
+        i := iter.head
+        // first char
+        if i == iter.tail {
+                return iter.readFloat64SlowPath()
+        }
+        c := iter.buf[i]
+        i++
+        ind := floatDigits[c]
+        switch ind {
+        case invalidCharForNumber:
+                return iter.readFloat64SlowPath()
+        case endOfNumber:
+                iter.ReportError("readFloat64", "empty number")
+                return
+        case dotInNumber:
+                iter.ReportError("readFloat64", "leading dot is invalid")
+                return
+        case 0:
+                if i == iter.tail {
+                        return iter.readFloat64SlowPath()
+                }
+                c = iter.buf[i]
+                switch c {
+                case '0', '1', '2', '3', '4', '5', '6', '7', '8', '9':
+                        iter.ReportError("readFloat64", "leading zero is invalid")
+                        return
+                }
+        }
+        value := uint64(ind)
+        // chars before dot
+non_decimal_loop:
+        for ; i < iter.tail; i++ {
+                c = iter.buf[i]
+                ind := floatDigits[c]
+                switch ind {
+                case invalidCharForNumber:
+                        return iter.readFloat64SlowPath()
+                case endOfNumber:
+                        iter.head = i
+                        return float64(value)
+                case dotInNumber:
+                        break non_decimal_loop
+                }
+                if value > uint64SafeToMultiple10 {
+                        return iter.readFloat64SlowPath()
+                }
+                value = (value << 3) + (value << 1) + uint64(ind) // value = value * 10 + ind;
+        }
+        // chars after dot
+        if c == '.' {
+                i++
+                decimalPlaces := 0
+                if i == iter.tail {
+                        return iter.readFloat64SlowPath()
+                }
+                for ; i < iter.tail; i++ {
+                        c = iter.buf[i]
+                        ind := floatDigits[c]
+                        switch ind {
+                        case endOfNumber:
+                                if decimalPlaces > 0 && decimalPlaces < len(pow10) {
+                                        iter.head = i
+                                        return float64(value) / float64(pow10[decimalPlaces])
+                                }
+                                // too many decimal places
+                                return iter.readFloat64SlowPath()
+                        case invalidCharForNumber, dotInNumber:
+                                return iter.readFloat64SlowPath()
+                        }
+                        decimalPlaces++
+                        if value > uint64SafeToMultiple10 {
+                                return iter.readFloat64SlowPath()
+                        }
+                        value = (value << 3) + (value << 1) + uint64(ind)
+                        if value > maxFloat64 {
+                                return iter.readFloat64SlowPath()
+                        }
+                }
+        }
+        return iter.readFloat64SlowPath()
+}
+
+func (iter *Iterator) readFloat64SlowPath() (ret float64) {
+        str := iter.readNumberAsString()
+        if iter.Error != nil && iter.Error != io.EOF {
+                return
+        }
+        errMsg := validateFloat(str)
+        if errMsg != "" {
+                iter.ReportError("readFloat64SlowPath", errMsg)
+                return
+        }
+        val, err := strconv.ParseFloat(str, 64)
+        if err != nil {
+                iter.Error = err
+                return
+        }
+        return val
+}
+
+func validateFloat(str string) string {
+        // strconv.ParseFloat is not validating `1.` or `1.e1`
+        if len(str) == 0 {
+                return "empty number"
+        }
+        if str[0] == '-' {
+                return "-- is not valid"
+        }
+        dotPos := strings.IndexByte(str, '.')
+        if dotPos != -1 {
+                if dotPos == len(str)-1 {
+                        return "dot can not be last character"
+                }
+                switch str[dotPos+1] {
+                case '0', '1', '2', '3', '4', '5', '6', '7', '8', '9':
+                default:
+                        return "missing digit after dot"
+                }
+        }
+        return ""
+}
+
+// ReadNumber read json.Number
+func (iter *Iterator) ReadNumber() (ret json.Number) {
+        return json.Number(iter.readNumberAsString())
+}
diff --git a/vendor/github.com/json-iterator/go/iter_int.go b/vendor/github.com/json-iterator/go/iter_int.go
new file mode 100644
index 0000000..d786a89
--- /dev/null
+++ b/vendor/github.com/json-iterator/go/iter_int.go
@@ -0,0 +1,346 @@
+package jsoniter
+
+import (
+        "math"
+        "strconv"
+)
+
+var intDigits []int8
+
+const uint32SafeToMultiply10 = uint32(0xffffffff)/10 - 1
+const uint64SafeToMultiple10 = uint64(0xffffffffffffffff)/10 - 1
+const maxFloat64 = 1<<53 - 1
+
+func init() {
+        intDigits = make([]int8, 256)
+        for i := 0; i < len(intDigits); i++ {
+                intDigits[i] = invalidCharForNumber
+        }
+        for i := int8('0'); i <= int8('9'); i++ {
+                intDigits[i] = i - int8('0')
+        }
+}
+
+// ReadUint read uint
+func (iter *Iterator) ReadUint() uint {
+        if strconv.IntSize == 32 {
+                return uint(iter.ReadUint32())
+        }
+        return uint(iter.ReadUint64())
+}
+
+// ReadInt read int
+func (iter *Iterator) ReadInt() int {
+        if strconv.IntSize == 32 {
+                return int(iter.ReadInt32())
+        }
+        return int(iter.ReadInt64())
+}
+
+// ReadInt8 read int8
+func (iter *Iterator) ReadInt8() (ret int8) {
+        c := iter.nextToken()
+        if c == '-' {
+                val := iter.readUint32(iter.readByte())
+                if val > math.MaxInt8+1 {
+                        iter.ReportError("ReadInt8", "overflow: "+strconv.FormatInt(int64(val), 10))
+                        return
+                }
+                return -int8(val)
+        }
+        val := iter.readUint32(c)
+        if val > math.MaxInt8 {
+                iter.ReportError("ReadInt8", "overflow: "+strconv.FormatInt(int64(val), 10))
+                return
+        }
+        return int8(val)
+}
+
+// ReadUint8 read uint8
+func (iter *Iterator) ReadUint8() (ret uint8) {
+        val := iter.readUint32(iter.nextToken())
+        if val > math.MaxUint8 {
+                iter.ReportError("ReadUint8", "overflow: "+strconv.FormatInt(int64(val), 10))
+                return
+        }
+        return uint8(val)
+}
+
+// ReadInt16 read int16
+func (iter *Iterator) ReadInt16() (ret int16) {
+        c := iter.nextToken()
+        if c == '-' {
+                val := iter.readUint32(iter.readByte())
+                if val > math.MaxInt16+1 {
+                        iter.ReportError("ReadInt16", "overflow: "+strconv.FormatInt(int64(val), 10))
+                        return
+                }
+                return -int16(val)
+        }
+        val := iter.readUint32(c)
+        if val > math.MaxInt16 {
+                iter.ReportError("ReadInt16", "overflow: "+strconv.FormatInt(int64(val), 10))
+                return
+        }
+        return int16(val)
+}
+
+// ReadUint16 read uint16
+func (iter *Iterator) ReadUint16() (ret uint16) {
+        val := iter.readUint32(iter.nextToken())
+        if val > math.MaxUint16 {
+                iter.ReportError("ReadUint16", "overflow: "+strconv.FormatInt(int64(val), 10))
+                return
+        }
+        return uint16(val)
+}
+
+// ReadInt32 read int32
+func (iter *Iterator) ReadInt32() (ret int32) {
+        c := iter.nextToken()
+        if c == '-' {
+                val := iter.readUint32(iter.readByte())
+                if val > math.MaxInt32+1 {
+                        iter.ReportError("ReadInt32", "overflow: "+strconv.FormatInt(int64(val), 10))
+                        return
+                }
+                return -int32(val)
+        }
+        val := iter.readUint32(c)
+        if val > math.MaxInt32 {
+                iter.ReportError("ReadInt32", "overflow: "+strconv.FormatInt(int64(val), 10))
+                return
+        }
+        return int32(val)
+}
+
+// ReadUint32 read uint32
+func (iter *Iterator) ReadUint32() (ret uint32) {
+        return iter.readUint32(iter.nextToken())
+}
+
+func (iter *Iterator) readUint32(c byte) (ret uint32) {
+        ind := intDigits[c]
+        if ind == 0 {
+                iter.assertInteger()
+                return 0 // single zero
+        }
+        if ind == invalidCharForNumber {
+                iter.ReportError("readUint32", "unexpected character: "+string([]byte{byte(ind)}))
+                return
+        }
+        value := uint32(ind)
+        if iter.tail-iter.head > 10 {
+                i := iter.head
+                ind2 := intDigits[iter.buf[i]]
+                if ind2 == invalidCharForNumber {
+                        iter.head = i
+                        iter.assertInteger()
+                        return value
+                }
+                i++
+                ind3 := intDigits[iter.buf[i]]
+                if ind3 == invalidCharForNumber {
+                        iter.head = i
+                        iter.assertInteger()
+                        return value*10 + uint32(ind2)
+                }
+                //iter.head = i + 1
+                //value = value * 100 + uint32(ind2) * 10 + uint32(ind3)
+                i++
+                ind4 := intDigits[iter.buf[i]]
+                if ind4 == invalidCharForNumber {
+                        iter.head = i
+                        iter.assertInteger()
+                        return value*100 + uint32(ind2)*10 + uint32(ind3)
+                }
+                i++
+                ind5 := intDigits[iter.buf[i]]
+                if ind5 == invalidCharForNumber {
+                        iter.head = i
+                        iter.assertInteger()
+                        return value*1000 + uint32(ind2)*100 + uint32(ind3)*10 + uint32(ind4)
+                }
+                i++
+                ind6 := intDigits[iter.buf[i]]
+                if ind6 == invalidCharForNumber {
+                        iter.head = i
+                        iter.assertInteger()
+                        return value*10000 + uint32(ind2)*1000 + uint32(ind3)*100 + uint32(ind4)*10 + uint32(ind5)
+                }
+                i++
+                ind7 := intDigits[iter.buf[i]]
+                if ind7 == invalidCharForNumber {
+                        iter.head = i
+                        iter.assertInteger()
+                        return value*100000 + uint32(ind2)*10000 + uint32(ind3)*1000 + uint32(ind4)*100 + uint32(ind5)*10 + uint32(ind6)
+                }
+                i++
+                ind8 := intDigits[iter.buf[i]]
+                if ind8 == invalidCharForNumber {
+                        iter.head = i
+                        iter.assertInteger()
+                        return value*1000000 + uint32(ind2)*100000 + uint32(ind3)*10000 + uint32(ind4)*1000 + uint32(ind5)*100 + uint32(ind6)*10 + uint32(ind7)
+                }
+                i++
+                ind9 := intDigits[iter.buf[i]]
+                value = value*10000000 + uint32(ind2)*1000000 + uint32(ind3)*100000 + uint32(ind4)*10000 + uint32(ind5)*1000 + uint32(ind6)*100 + uint32(ind7)*10 + uint32(ind8)
+                iter.head = i
+                if ind9 == invalidCharForNumber {
+                        iter.assertInteger()
+                        return value
+                }
+        }
+        for {
+                for i := iter.head; i < iter.tail; i++ {
+                        ind = intDigits[iter.buf[i]]
+                        if ind == invalidCharForNumber {
+                                iter.head = i
+                                iter.assertInteger()
+                                return value
+                        }
+                        if value > uint32SafeToMultiply10 {
+                                value2 := (value << 3) + (value << 1) + uint32(ind)
+                                if value2 < value {
+                                        iter.ReportError("readUint32", "overflow")
+                                        return
+                                }
+                                value = value2
+                                continue
+                        }
+                        value = (value << 3) + (value << 1) + uint32(ind)
+                }
+                if !iter.loadMore() {
+                        iter.assertInteger()
+                        return value
+                }
+        }
+}
+
+// ReadInt64 read int64
+func (iter *Iterator) ReadInt64() (ret int64) {
+        c := iter.nextToken()
+        if c == '-' {
+                val := iter.readUint64(iter.readByte())
+                if val > math.MaxInt64+1 {
+                        iter.ReportError("ReadInt64", "overflow: "+strconv.FormatUint(uint64(val), 10))
+                        return
+                }
+                return -int64(val)
+        }
+        val := iter.readUint64(c)
+        if val > math.MaxInt64 {
+                iter.ReportError("ReadInt64", "overflow: "+strconv.FormatUint(uint64(val), 10))
+                return
+        }
+        return int64(val)
+}
+
+// ReadUint64 read uint64
+func (iter *Iterator) ReadUint64() uint64 {
+        return iter.readUint64(iter.nextToken())
+}
+
+func (iter *Iterator) readUint64(c byte) (ret uint64) {
+        ind := intDigits[c]
+        if ind == 0 {
+                iter.assertInteger()
+                return 0 // single zero
+        }
+        if ind == invalidCharForNumber {
+                iter.ReportError("readUint64", "unexpected character: "+string([]byte{byte(ind)}))
+                return
+        }
+        value := uint64(ind)
+        if iter.tail-iter.head > 10 {
+                i := iter.head
+                ind2 := intDigits[iter.buf[i]]
+                if ind2 == invalidCharForNumber {
+                        iter.head = i
+                        iter.assertInteger()
+                        return value
+                }
+                i++
+                ind3 := intDigits[iter.buf[i]]
+                if ind3 == invalidCharForNumber {
+                        iter.head = i
+                        iter.assertInteger()
+                        return value*10 + uint64(ind2)
+                }
+                //iter.head = i + 1
+                //value = value * 100 + uint32(ind2) * 10 + uint32(ind3)
+                i++
+                ind4 := intDigits[iter.buf[i]]
+                if ind4 == invalidCharForNumber {
+                        iter.head = i
+                        iter.assertInteger()
+                        return value*100 + uint64(ind2)*10 + uint64(ind3)
+                }
+                i++
+                ind5 := intDigits[iter.buf[i]]
+                if ind5 == invalidCharForNumber {
+                        iter.head = i
+                        iter.assertInteger()
+                        return value*1000 + uint64(ind2)*100 + uint64(ind3)*10 + uint64(ind4)
+                }
+                i++
+                ind6 := intDigits[iter.buf[i]]
+                if ind6 == invalidCharForNumber {
+                        iter.head = i
+                        iter.assertInteger()
+                        return value*10000 + uint64(ind2)*1000 + uint64(ind3)*100 + uint64(ind4)*10 + uint64(ind5)
+                }
+                i++
+                ind7 := intDigits[iter.buf[i]]
+                if ind7 == invalidCharForNumber {
+                        iter.head = i
+                        iter.assertInteger()
+                        return value*100000 + uint64(ind2)*10000 + uint64(ind3)*1000 + uint64(ind4)*100 + uint64(ind5)*10 + uint64(ind6)
+                }
+                i++
+                ind8 := intDigits[iter.buf[i]]
+                if ind8 == invalidCharForNumber {
+                        iter.head = i
+                        iter.assertInteger()
+                        return value*1000000 + uint64(ind2)*100000 + uint64(ind3)*10000 + uint64(ind4)*1000 + uint64(ind5)*100 + uint64(ind6)*10 + uint64(ind7)
+                }
+                i++
+                ind9 := intDigits[iter.buf[i]]
+                value = value*10000000 + uint64(ind2)*1000000 + uint64(ind3)*100000 + uint64(ind4)*10000 + uint64(ind5)*1000 + uint64(ind6)*100 + uint64(ind7)*10 + uint64(ind8)
+                iter.head = i
+                if ind9 == invalidCharForNumber {
+                        iter.assertInteger()
+                        return value
+                }
+        }
+        for {
+                for i := iter.head; i < iter.tail; i++ {
+                        ind = intDigits[iter.buf[i]]
+                        if ind == invalidCharForNumber {
+                                iter.head = i
+                                iter.assertInteger()
+                                return value
+                        }
+                        if value > uint64SafeToMultiple10 {
+                                value2 := (value << 3) + (value << 1) + uint64(ind)
+                                if value2 < value {
+                                        iter.ReportError("readUint64", "overflow")
+                                        return
+                                }
+                                value = value2
+                                continue
+                        }
+                        value = (value << 3) + (value << 1) + uint64(ind)
+                }
+                if !iter.loadMore() {
+                        iter.assertInteger()
+                        return value
+                }
+        }
+}
+
+func (iter *Iterator) assertInteger() {
+        if iter.head < iter.tail && iter.buf[iter.head] == '.' {
+                iter.ReportError("assertInteger", "can not decode float as int")
+        }
+}
diff --git a/vendor/github.com/json-iterator/go/iter_object.go b/vendor/github.com/json-iterator/go/iter_object.go
new file mode 100644
index 0000000..58ee89c
--- /dev/null
+++ b/vendor/github.com/json-iterator/go/iter_object.go
@@ -0,0 +1,267 @@
+package jsoniter
+
+import (
+        "fmt"
+        "strings"
+)
+
+// ReadObject read one field from object.
+// If object ended, returns empty string.
+// Otherwise, returns the field name.
+func (iter *Iterator) ReadObject() (ret string) {
+        c := iter.nextToken()
+        switch c {
+        case 'n':
+                iter.skipThreeBytes('u', 'l', 'l')
+                return "" // null
+        case '{':
+                c = iter.nextToken()
+                if c == '"' {
+                        iter.unreadByte()
+                        field := iter.ReadString()
+                        c = iter.nextToken()
+                        if c != ':' {
+                                iter.ReportError("ReadObject", "expect : after object field, but found "+string([]byte{c}))
+                        }
+                        return field
+                }
+                if c == '}' {
+                        return "" // end of object
+                }
+                iter.ReportError("ReadObject", `expect " after {, but found `+string([]byte{c}))
+                return
+        case ',':
+                field := iter.ReadString()
+                c = iter.nextToken()
+                if c != ':' {
+                        iter.ReportError("ReadObject", "expect : after object field, but found "+string([]byte{c}))
+                }
+                return field
+        case '}':
+                return "" // end of object
+        default:
+                iter.ReportError("ReadObject", fmt.Sprintf(`expect { or , or } or n, but found %s`, string([]byte{c})))
+                return
+        }
+}
+
+// CaseInsensitive
+func (iter *Iterator) readFieldHash() int64 {
+        hash := int64(0x811c9dc5)
+        c := iter.nextToken()
+        if c != '"' {
+                iter.ReportError("readFieldHash", `expect ", but found `+string([]byte{c}))
+                return 0
+        }
+        for {
+                for i := iter.head; i < iter.tail; i++ {
+                        // require ascii string and no escape
+                        b := iter.buf[i]
+                        if b == '\\' {
+                                iter.head = i
+                                for _, b := range iter.readStringSlowPath() {
+                                        if 'A' <= b && b <= 'Z' && !iter.cfg.caseSensitive {
+                                                b += 'a' - 'A'
+                                        }
+                                        hash ^= int64(b)
+                                        hash *= 0x1000193
+                                }
+                                c = iter.nextToken()
+                                if c != ':' {
+                                        iter.ReportError("readFieldHash", `expect :, but found `+string([]byte{c}))
+                                        return 0
+                                }
+                                return hash
+                        }
+                        if b == '"' {
+                                iter.head = i + 1
+                                c = iter.nextToken()
+                                if c != ':' {
+                                        iter.ReportError("readFieldHash", `expect :, but found `+string([]byte{c}))
+                                        return 0
+                                }
+                                return hash
+                        }
+                        if 'A' <= b && b <= 'Z' && !iter.cfg.caseSensitive {
+                                b += 'a' - 'A'
+                        }
+                        hash ^= int64(b)
+                        hash *= 0x1000193
+                }
+                if !iter.loadMore() {
+                        iter.ReportError("readFieldHash", `incomplete field name`)
+                        return 0
+                }
+        }
+}
+
+func calcHash(str string, caseSensitive bool) int64 {
+        if !caseSensitive {
+                str = strings.ToLower(str)
+        }
+        hash := int64(0x811c9dc5)
+        for _, b := range []byte(str) {
+                hash ^= int64(b)
+                hash *= 0x1000193
+        }
+        return int64(hash)
+}
+
+// ReadObjectCB read object with callback, the key is ascii only and field name not copied
+func (iter *Iterator) ReadObjectCB(callback func(*Iterator, string) bool) bool {
+        c := iter.nextToken()
+        var field string
+        if c == '{' {
+                if !iter.incrementDepth() {
+                        return false
+                }
+                c = iter.nextToken()
+                if c == '"' {
+                        iter.unreadByte()
+                        field = iter.ReadString()
+                        c = iter.nextToken()
+                        if c != ':' {
+                                iter.ReportError("ReadObject", "expect : after object field, but found "+string([]byte{c}))
+                        }
+                        if !callback(iter, field) {
+                                iter.decrementDepth()
+                                return false
+                        }
+                        c = iter.nextToken()
+                        for c == ',' {
+                                field = iter.ReadString()
+                                c = iter.nextToken()
+                                if c != ':' {
+                                        iter.ReportError("ReadObject", "expect : after object field, but found "+string([]byte{c}))
+                                }
+                                if !callback(iter, field) {
+                                        iter.decrementDepth()
+                                        return false
+                                }
+                                c = iter.nextToken()
+                        }
+                        if c != '}' {
+                                iter.ReportError("ReadObjectCB", `object not ended with }`)
+                                iter.decrementDepth()
+                                return false
+                        }
+                        return iter.decrementDepth()
+                }
+                if c == '}' {
+                        return iter.decrementDepth()
+                }
+                iter.ReportError("ReadObjectCB", `expect " after {, but found `+string([]byte{c}))
+                iter.decrementDepth()
+                return false
+        }
+        if c == 'n' {
+                iter.skipThreeBytes('u', 'l', 'l')
+                return true // null
+        }
+        iter.ReportError("ReadObjectCB", `expect { or n, but found `+string([]byte{c}))
+        return false
+}
+
+// ReadMapCB read map with callback, the key can be any string
+func (iter *Iterator) ReadMapCB(callback func(*Iterator, string) bool) bool {
+        c := iter.nextToken()
+        if c == '{' {
+                if !iter.incrementDepth() {
+                        return false
+                }
+                c = iter.nextToken()
+                if c == '"' {
+                        iter.unreadByte()
+                        field := iter.ReadString()
+                        if iter.nextToken() != ':' {
+                                iter.ReportError("ReadMapCB", "expect : after object field, but found "+string([]byte{c}))
+                                iter.decrementDepth()
+                                return false
+                        }
+                        if !callback(iter, field) {
+                                iter.decrementDepth()
+                                return false
+                        }
+                        c = iter.nextToken()
+                        for c == ',' {
+                                field = iter.ReadString()
+                                if iter.nextToken() != ':' {
+                                        iter.ReportError("ReadMapCB", "expect : after object field, but found "+string([]byte{c}))
+                                        iter.decrementDepth()
+                                        return false
+                                }
+                                if !callback(iter, field) {
+                                        iter.decrementDepth()
+                                        return false
+                                }
+                                c = iter.nextToken()
+                        }
+                        if c != '}' {
+                                iter.ReportError("ReadMapCB", `object not ended with }`)
+                                iter.decrementDepth()
+                                return false
+                        }
+                        return iter.decrementDepth()
+                }
+                if c == '}' {
+                        return iter.decrementDepth()
+                }
+                iter.ReportError("ReadMapCB", `expect " after {, but found `+string([]byte{c}))
+                iter.decrementDepth()
+                return false
+        }
+        if c == 'n' {
+                iter.skipThreeBytes('u', 'l', 'l')
+                return true // null
+        }
+        iter.ReportError("ReadMapCB", `expect { or n, but found `+string([]byte{c}))
+        return false
+}
+
+func (iter *Iterator) readObjectStart() bool {
+        c := iter.nextToken()
+        if c == '{' {
+                c = iter.nextToken()
+                if c == '}' {
+                        return false
+                }
+                iter.unreadByte()
+                return true
+        } else if c == 'n' {
+                iter.skipThreeBytes('u', 'l', 'l')
+                return false
+        }
+        iter.ReportError("readObjectStart", "expect { or n, but found "+string([]byte{c}))
+        return false
+}
+
+func (iter *Iterator) readObjectFieldAsBytes() (ret []byte) {
+        str := iter.ReadStringAsSlice()
+        if iter.skipWhitespacesWithoutLoadMore() {
+                if ret == nil {
+                        ret = make([]byte, len(str))
+                        copy(ret, str)
+                }
+                if !iter.loadMore() {
+                        return
+                }
+        }
+        if iter.buf[iter.head] != ':' {
+                iter.ReportError("readObjectFieldAsBytes", "expect : after object field, but found "+string([]byte{iter.buf[iter.head]}))
+                return
+        }
+        iter.head++
+        if iter.skipWhitespacesWithoutLoadMore() {
+                if ret == nil {
+                        ret = make([]byte, len(str))
+                        copy(ret, str)
+                }
+                if !iter.loadMore() {
+                        return
+                }
+        }
+        if ret == nil {
+                return str
+        }
+        return ret
+}
diff --git a/vendor/github.com/json-iterator/go/iter_skip.go b/vendor/github.com/json-iterator/go/iter_skip.go
new file mode 100644
index 0000000..e91eefb
--- /dev/null
+++ b/vendor/github.com/json-iterator/go/iter_skip.go
@@ -0,0 +1,130 @@
+package jsoniter
+
+import "fmt"
+
+// ReadNil reads a json object as nil and
+// returns whether it's a nil or not
+func (iter *Iterator) ReadNil() (ret bool) {
+        c := iter.nextToken()
+        if c == 'n' {
+                iter.skipThreeBytes('u', 'l', 'l') // null
+                return true
+        }
+        iter.unreadByte()
+        return false
+}
+
+// ReadBool reads a json object as BoolValue
+func (iter *Iterator) ReadBool() (ret bool) {
+        c := iter.nextToken()
+        if c == 't' {
+                iter.skipThreeBytes('r', 'u', 'e')
+                return true
+        }
+        if c == 'f' {
+                iter.skipFourBytes('a', 'l', 's', 'e')
+                return false
+        }
+        iter.ReportError("ReadBool", "expect t or f, but found "+string([]byte{c}))
+        return
+}
+
+// SkipAndReturnBytes skip next JSON element, and return its content as []byte.
+// The []byte can be kept, it is a copy of data.
+func (iter *Iterator) SkipAndReturnBytes() []byte {
+        iter.startCapture(iter.head)
+        iter.Skip()
+        return iter.stopCapture()
+}
+
+// SkipAndAppendBytes skips next JSON element and appends its content to
+// buffer, returning the result.
+func (iter *Iterator) SkipAndAppendBytes(buf []byte) []byte {
+        iter.startCaptureTo(buf, iter.head)
+        iter.Skip()
+        return iter.stopCapture()
+}
+
+func (iter *Iterator) startCaptureTo(buf []byte, captureStartedAt int) {
+        if iter.captured != nil {
+                panic("already in capture mode")
+        }
+        iter.captureStartedAt = captureStartedAt
+        iter.captured = buf
+}
+
+func (iter *Iterator) startCapture(captureStartedAt int) {
+        iter.startCaptureTo(make([]byte, 0, 32), captureStartedAt)
+}
+
+func (iter *Iterator) stopCapture() []byte {
+        if iter.captured == nil {
+                panic("not in capture mode")
+        }
+        captured := iter.captured
+        remaining := iter.buf[iter.captureStartedAt:iter.head]
+        iter.captureStartedAt = -1
+        iter.captured = nil
+        return append(captured, remaining...)
+}
+
+// Skip skips a json object and positions to relatively the next json object
+func (iter *Iterator) Skip() {
+        c := iter.nextToken()
+        switch c {
+        case '"':
+                iter.skipString()
+        case 'n':
+                iter.skipThreeBytes('u', 'l', 'l') // null
+        case 't':
+                iter.skipThreeBytes('r', 'u', 'e') // true
+        case 'f':
+                iter.skipFourBytes('a', 'l', 's', 'e') // false
+        case '0':
+                iter.unreadByte()
+                iter.ReadFloat32()
+        case '-', '1', '2', '3', '4', '5', '6', '7', '8', '9':
+                iter.skipNumber()
+        case '[':
+                iter.skipArray()
+        case '{':
+                iter.skipObject()
+        default:
+                iter.ReportError("Skip", fmt.Sprintf("do not know how to skip: %v", c))
+                return
+        }
+}
+
+func (iter *Iterator) skipFourBytes(b1, b2, b3, b4 byte) {
+        if iter.readByte() != b1 {
+                iter.ReportError("skipFourBytes", fmt.Sprintf("expect %s", string([]byte{b1, b2, b3, b4})))
+                return
+        }
+        if iter.readByte() != b2 {
+                iter.ReportError("skipFourBytes", fmt.Sprintf("expect %s", string([]byte{b1, b2, b3, b4})))
+                return
+        }
+        if iter.readByte() != b3 {
+                iter.ReportError("skipFourBytes", fmt.Sprintf("expect %s", string([]byte{b1, b2, b3, b4})))
+                return
+        }
+        if iter.readByte() != b4 {
+                iter.ReportError("skipFourBytes", fmt.Sprintf("expect %s", string([]byte{b1, b2, b3, b4})))
+                return
+        }
+}
+
+func (iter *Iterator) skipThreeBytes(b1, b2, b3 byte) {
+        if iter.readByte() != b1 {
+                iter.ReportError("skipThreeBytes", fmt.Sprintf("expect %s", string([]byte{b1, b2, b3})))
+                return
+        }
+        if iter.readByte() != b2 {
+                iter.ReportError("skipThreeBytes", fmt.Sprintf("expect %s", string([]byte{b1, b2, b3})))
+                return
+        }
+        if iter.readByte() != b3 {
+                iter.ReportError("skipThreeBytes", fmt.Sprintf("expect %s", string([]byte{b1, b2, b3})))
+                return
+        }
+}
diff --git a/vendor/github.com/json-iterator/go/iter_skip_sloppy.go b/vendor/github.com/json-iterator/go/iter_skip_sloppy.go
new file mode 100644
index 0000000..9303de4
--- /dev/null
+++ b/vendor/github.com/json-iterator/go/iter_skip_sloppy.go
@@ -0,0 +1,163 @@
+//+build jsoniter_sloppy
+
+package jsoniter
+
+// sloppy but faster implementation, do not validate the input json
+
+func (iter *Iterator) skipNumber() {
+        for {
+                for i := iter.head; i < iter.tail; i++ {
+                        c := iter.buf[i]
+                        switch c {
+                        case ' ', '\n', '\r', '\t', ',', '}', ']':
+                                iter.head = i
+                                return
+                        }
+                }
+                if !iter.loadMore() {
+                        return
+                }
+        }
+}
+
+func (iter *Iterator) skipArray() {
+        level := 1
+        if !iter.incrementDepth() {
+                return
+        }
+        for {
+                for i := iter.head; i < iter.tail; i++ {
+                        switch iter.buf[i] {
+                        case '"': // If inside string, skip it
+                                iter.head = i + 1
+                                iter.skipString()
+                                i = iter.head - 1 // it will be i++ soon
+                        case '[': // If open symbol, increase level
+                                level++
+                                if !iter.incrementDepth() {
+                                        return
+                                }
+                        case ']': // If close symbol, increase level
+                                level--
+                                if !iter.decrementDepth() {
+                                        return
+                                }
+
+                                // If we have returned to the original level, we're done
+                                if level == 0 {
+                                        iter.head = i + 1
+                                        return
+                                }
+                        }
+                }
+                if !iter.loadMore() {
+                        iter.ReportError("skipObject", "incomplete array")
+                        return
+                }
+        }
+}
+
+func (iter *Iterator) skipObject() {
+        level := 1
+        if !iter.incrementDepth() {
+                return
+        }
+
+        for {
+                for i := iter.head; i < iter.tail; i++ {
+                        switch iter.buf[i] {
+                        case '"': // If inside string, skip it
+                                iter.head = i + 1
+                                iter.skipString()
+                                i = iter.head - 1 // it will be i++ soon
+                        case '{': // If open symbol, increase level
+                                level++
+                                if !iter.incrementDepth() {
+                                        return
+                                }
+                        case '}': // If close symbol, increase level
+                                level--
+                                if !iter.decrementDepth() {
+                                        return
+                                }
+
+                                // If we have returned to the original level, we're done
+                                if level == 0 {
+                                        iter.head = i + 1
+                                        return
+                                }
+                        }
+                }
+                if !iter.loadMore() {
+                        iter.ReportError("skipObject", "incomplete object")
+                        return
+                }
+        }
+}
+
+func (iter *Iterator) skipString() {
+        for {
+                end, escaped := iter.findStringEnd()
+                if end == -1 {
+                        if !iter.loadMore() {
+                                iter.ReportError("skipString", "incomplete string")
+                                return
+                        }
+                        if escaped {
+                                iter.head = 1 // skip the first char as last char read is \
+                        }
+                } else {
+                        iter.head = end
+                        return
+                }
+        }
+}
+
+// adapted from: https://github.com/buger/jsonparser/blob/master/parser.go
+// Tries to find the end of string
+// Support if string contains escaped quote symbols.
+func (iter *Iterator) findStringEnd() (int, bool) {
+        escaped := false
+        for i := iter.head; i < iter.tail; i++ {
+                c := iter.buf[i]
+                if c == '"' {
+                        if !escaped {
+                                return i + 1, false
+                        }
+                        j := i - 1
+                        for {
+                                if j < iter.head || iter.buf[j] != '\\' {
+                                        // even number of backslashes
+                                        // either end of buffer, or " found
+                                        return i + 1, true
+                                }
+                                j--
+                                if j < iter.head || iter.buf[j] != '\\' {
+                                        // odd number of backslashes
+                                        // it is \" or \\\"
+                                        break
+                                }
+                                j--
+                        }
+                } else if c == '\\' {
+                        escaped = true
+                }
+        }
+        j := iter.tail - 1
+        for {
+                if j < iter.head || iter.buf[j] != '\\' {
+                        // even number of backslashes
+                        // either end of buffer, or " found
+                        return -1, false // do not end with \
+                }
+                j--
+                if j < iter.head || iter.buf[j] != '\\' {
+                        // odd number of backslashes
+                        // it is \" or \\\"
+                        break
+                }
+                j--
+
+        }
+        return -1, true // end with \
+}
diff --git a/vendor/github.com/json-iterator/go/iter_skip_strict.go b/vendor/github.com/json-iterator/go/iter_skip_strict.go
new file mode 100644
index 0000000..6cf66d0
--- /dev/null
+++ b/vendor/github.com/json-iterator/go/iter_skip_strict.go
@@ -0,0 +1,99 @@
+//+build !jsoniter_sloppy
+
+package jsoniter
+
+import (
+        "fmt"
+        "io"
+)
+
+func (iter *Iterator) skipNumber() {
+        if !iter.trySkipNumber() {
+                iter.unreadByte()
+                if iter.Error != nil && iter.Error != io.EOF {
+                        return
+                }
+                iter.ReadFloat64()
+                if iter.Error != nil && iter.Error != io.EOF {
+                        iter.Error = nil
+                        iter.ReadBigFloat()
+                }
+        }
+}
+
+func (iter *Iterator) trySkipNumber() bool {
+        dotFound := false
+        for i := iter.head; i < iter.tail; i++ {
+                c := iter.buf[i]
+                switch c {
+                case '0', '1', '2', '3', '4', '5', '6', '7', '8', '9':
+                case '.':
+                        if dotFound {
+                                iter.ReportError("validateNumber", `more than one dot found in number`)
+                                return true // already failed
+                        }
+                        if i+1 == iter.tail {
+                                return false
+                        }
+                        c = iter.buf[i+1]
+                        switch c {
+                        case '0', '1', '2', '3', '4', '5', '6', '7', '8', '9':
+                        default:
+                                iter.ReportError("validateNumber", `missing digit after dot`)
+                                return true // already failed
+                        }
+                        dotFound = true
+                default:
+                        switch c {
+                        case ',', ']', '}', ' ', '\t', '\n', '\r':
+                                if iter.head == i {
+                                        return false // if - without following digits
+                                }
+                                iter.head = i
+                                return true // must be valid
+                        }
+                        return false // may be invalid
+                }
+        }
+        return false
+}
+
+func (iter *Iterator) skipString() {
+        if !iter.trySkipString() {
+                iter.unreadByte()
+                iter.ReadString()
+        }
+}
+
+func (iter *Iterator) trySkipString() bool {
+        for i := iter.head; i < iter.tail; i++ {
+                c := iter.buf[i]
+                if c == '"' {
+                        iter.head = i + 1
+                        return true // valid
+                } else if c == '\\' {
+                        return false
+                } else if c < ' ' {
+                        iter.ReportError("trySkipString",
+                                fmt.Sprintf(`invalid control character found: %d`, c))
+                        return true // already failed
+                }
+        }
+        return false
+}
+
+func (iter *Iterator) skipObject() {
+        iter.unreadByte()
+        iter.ReadObjectCB(func(iter *Iterator, field string) bool {
+                iter.Skip()
+                return true
+        })
+}
+
+func (iter *Iterator) skipArray() {
+        iter.unreadByte()
+        iter.ReadArrayCB(func(iter *Iterator) bool {
+                iter.Skip()
+                return true
+        })
+}
diff --git a/vendor/github.com/json-iterator/go/iter_str.go b/vendor/github.com/json-iterator/go/iter_str.go
new file mode 100644
index 0000000..adc487e
--- /dev/null
+++ b/vendor/github.com/json-iterator/go/iter_str.go
@@ -0,0 +1,215 @@
+package jsoniter
+
+import (
+        "fmt"
+        "unicode/utf16"
+)
+
+// ReadString read string from iterator
+func (iter *Iterator) ReadString() (ret string) {
+        c := iter.nextToken()
+        if c == '"' {
+                for i := iter.head; i < iter.tail; i++ {
+                        c := iter.buf[i]
+                        if c == '"' {
+                                ret = string(iter.buf[iter.head:i])
+                                iter.head = i + 1
+                                return ret
+                        } else if c == '\\' {
+                                break
+                        } else if c < ' ' {
+                                iter.ReportError("ReadString",
+                                        fmt.Sprintf(`invalid control character found: %d`, c))
+                                return
+                        }
+                }
+                return iter.readStringSlowPath()
+        } else if c == 'n' {
+                iter.skipThreeBytes('u', 'l', 'l')
+                return ""
+        }
+        iter.ReportError("ReadString", `expects " or n, but found `+string([]byte{c}))
+        return
+}
+
+func (iter *Iterator) readStringSlowPath() (ret string) {
+        var str []byte
+        var c byte
+        for iter.Error == nil {
+                c = iter.readByte()
+                if c == '"' {
+                        return string(str)
+                }
+                if c == '\\' {
+                        c = iter.readByte()
+                        str = iter.readEscapedChar(c, str)
+                } else {
+                        str = append(str, c)
+                }
+        }
+        iter.ReportError("readStringSlowPath", "unexpected end of input")
+        return
+}
+
+func (iter *Iterator) readEscapedChar(c byte, str []byte) []byte {
+        switch c {
+        case 'u':
+                r := iter.readU4()
+                if utf16.IsSurrogate(r) {
+                        c = iter.readByte()
+                        if iter.Error != nil {
+                                return nil
+                        }
+                        if c != '\\' {
+                                iter.unreadByte()
+                                str = appendRune(str, r)
+                                return str
+                        }
+                        c = iter.readByte()
+                        if iter.Error != nil {
+                                return nil
+                        }
+                        if c != 'u' {
+                                str = appendRune(str, r)
+                                return iter.readEscapedChar(c, str)
+                        }
+                        r2 := iter.readU4()
+                        if iter.Error != nil {
+                                return nil
+                        }
+                        combined := utf16.DecodeRune(r, r2)
+                        if combined == '\uFFFD' {
+                                str = appendRune(str, r)
+                                str = appendRune(str, r2)
+                        } else {
+                                str = appendRune(str, combined)
+                        }
+                } else {
+                        str = appendRune(str, r)
+                }
+        case '"':
+                str = append(str, '"')
+        case '\\':
+                str = append(str, '\\')
+        case '/':
+                str = append(str, '/')
+        case 'b':
+                str = append(str, '\b')
+        case 'f':
+                str = append(str, '\f')
+        case 'n':
+                str = append(str, '\n')
+        case 'r':
+                str = append(str, '\r')
+        case 't':
+                str = append(str, '\t')
+        default:
+                iter.ReportError("readEscapedChar",
+                        `invalid escape char after \`)
+                return nil
+        }
+        return str
+}
+
+// ReadStringAsSlice read string from iterator without copying into string form.
+// The []byte can not be kept, as it will change after next iterator call.
+func (iter *Iterator) ReadStringAsSlice() (ret []byte) {
+        c := iter.nextToken()
+        if c == '"' {
+                for i := iter.head; i < iter.tail; i++ {
+                        // require ascii string and no escape
+                        // for: field name, base64, number
+                        if iter.buf[i] == '"' {
+                                // fast path: reuse the underlying buffer
+                                ret = iter.buf[iter.head:i]
+                                iter.head = i + 1
+                                return ret
+                        }
+                }
+                readLen := iter.tail - iter.head
+                copied := make([]byte, readLen, readLen*2)
+                copy(copied, iter.buf[iter.head:iter.tail])
+                iter.head = iter.tail
+                for iter.Error == nil {
+                        c := iter.readByte()
+                        if c == '"' {
+                                return copied
+                        }
+                        copied = append(copied, c)
+                }
+                return copied
+        }
+        iter.ReportError("ReadStringAsSlice", `expects " or n, but found `+string([]byte{c}))
+        return
+}
+
+func (iter *Iterator) readU4() (ret rune) {
+        for i := 0; i < 4; i++ {
+                c := iter.readByte()
+                if iter.Error != nil {
+                        return
+                }
+                if c >= '0' && c <= '9' {
+                        ret = ret*16 + rune(c-'0')
+                } else if c >= 'a' && c <= 'f' {
+                        ret = ret*16 + rune(c-'a'+10)
+                } else if c >= 'A' && c <= 'F' {
+                        ret = ret*16 + rune(c-'A'+10)
+                } else {
+                        iter.ReportError("readU4", "expects 0~9 or a~f, but found "+string([]byte{c}))
+                        return
+                }
+        }
+        return ret
+}
+
+const (
+        t1 = 0x00 // 0000 0000
+        tx = 0x80 // 1000 0000
+        t2 = 0xC0 // 1100 0000
+        t3 = 0xE0 // 1110 0000
+        t4 = 0xF0 // 1111 0000
+        t5 = 0xF8 // 1111 1000
+
+        maskx = 0x3F // 0011 1111
+        mask2 = 0x1F // 0001 1111
+        mask3 = 0x0F // 0000 1111
+        mask4 = 0x07 // 0000 0111
+
+        rune1Max = 1<<7 - 1
+        rune2Max = 1<<11 - 1
+        rune3Max = 1<<16 - 1
+
+        surrogateMin = 0xD800
+        surrogateMax = 0xDFFF
+
+        maxRune   = '\U0010FFFF' // Maximum valid Unicode code point.
+        runeError = '\uFFFD'     // the "error" Rune or "Unicode replacement character"
+)
+
+func appendRune(p []byte, r rune) []byte {
+        // Negative values are erroneous. Making it unsigned addresses the problem.
+        switch i := uint32(r); {
+        case i <= rune1Max:
+                p = append(p, byte(r))
+                return p
+        case i <= rune2Max:
+                p = append(p, t2|byte(r>>6))
+                p = append(p, tx|byte(r)&maskx)
+                return p
+        case i > maxRune, surrogateMin <= i && i <= surrogateMax:
+                r = runeError
+                fallthrough
+        case i <= rune3Max:
+                p = append(p, t3|byte(r>>12))
+                p = append(p, tx|byte(r>>6)&maskx)
+                p = append(p, tx|byte(r)&maskx)
+                return p
+        default:
+                p = append(p, t4|byte(r>>18))
+                p = append(p, tx|byte(r>>12)&maskx)
+                p = append(p, tx|byte(r>>6)&maskx)
+                p = append(p, tx|byte(r)&maskx)
+                return p
+        }
+}
diff --git a/vendor/github.com/json-iterator/go/jsoniter.go b/vendor/github.com/json-iterator/go/jsoniter.go
new file mode 100644
index 0000000..c2934f9
--- /dev/null
+++ b/vendor/github.com/json-iterator/go/jsoniter.go
@@ -0,0 +1,18 @@
+// Package jsoniter implements encoding and decoding of JSON as defined in
+// RFC 4627 and provides interfaces with identical syntax of standard lib encoding/json.
+// Converting from encoding/json to jsoniter is no more than replacing the package with jsoniter
+// and variable type declarations (if any).
+// jsoniter interfaces gives 100% compatibility with code using standard lib.
+//
+// "JSON and Go"
+// (https://golang.org/doc/articles/json_and_go.html)
+// gives a description of how Marshal/Unmarshal operate
+// between arbitrary or predefined json objects and bytes,
+// and it applies to jsoniter.Marshal/Unmarshal as well.
+//
+// Besides, jsoniter.Iterator provides a different set of interfaces
+// iterating given bytes/string/reader
+// and yielding parsed elements one by one.
+// This set of interfaces reads input as required and gives
+// better performance.
+package jsoniter
diff --git a/vendor/github.com/json-iterator/go/pool.go b/vendor/github.com/json-iterator/go/pool.go
new file mode 100644
index 0000000..e2389b5
--- /dev/null
+++ b/vendor/github.com/json-iterator/go/pool.go
@@ -0,0 +1,42 @@
+package jsoniter
+
+import (
+        "io"
+)
+
+// IteratorPool a thread safe pool of iterators with same configuration
+type IteratorPool interface {
+        BorrowIterator(data []byte) *Iterator
+        ReturnIterator(iter *Iterator)
+}
+
+// StreamPool a thread safe pool of streams with same configuration
+type StreamPool interface {
+        BorrowStream(writer io.Writer) *Stream
+        ReturnStream(stream *Stream)
+}
+
+func (cfg *frozenConfig) BorrowStream(writer io.Writer) *Stream {
+        stream := cfg.streamPool.Get().(*Stream)
+        stream.Reset(writer)
+        return stream
+}
+
+func (cfg *frozenConfig) ReturnStream(stream *Stream) {
+        stream.out = nil
+        stream.Error = nil
+        stream.Attachment = nil
+        cfg.streamPool.Put(stream)
+}
+
+func (cfg *frozenConfig) BorrowIterator(data []byte) *Iterator {
+        iter := cfg.iteratorPool.Get().(*Iterator)
+        iter.ResetBytes(data)
+        return iter
+}
+
+func (cfg *frozenConfig) ReturnIterator(iter *Iterator) {
+        iter.Error = nil
+        iter.Attachment = nil
+        cfg.iteratorPool.Put(iter)
+}
diff --git a/vendor/github.com/json-iterator/go/reflect.go b/vendor/github.com/json-iterator/go/reflect.go
new file mode 100644
index 0000000..39acb32
--- /dev/null
+++ b/vendor/github.com/json-iterator/go/reflect.go
@@ -0,0 +1,337 @@
+package jsoniter
+
+import (
+        "fmt"
+        "reflect"
+        "unsafe"
+
+        "github.com/modern-go/reflect2"
+)
+
+// ValDecoder is an internal type registered to cache as needed.
+// Don't confuse jsoniter.ValDecoder with json.Decoder.
+// For json.Decoder's adapter, refer to jsoniter.AdapterDecoder(todo link).
+//
+// Reflection on type to create decoders, which is then cached
+// Reflection on value is avoided as we can, as the reflect.Value itself will allocate, with following exceptions
+// 1. create instance of new value, for example *int will need a int to be allocated
+// 2. append to slice, if the existing cap is not enough, allocate will be done using Reflect.New
+// 3. assignment to map, both key and value will be reflect.Value
+// For a simple struct binding, it will be reflect.Value free and allocation free
+type ValDecoder interface {
+        Decode(ptr unsafe.Pointer, iter *Iterator)
+}
+
+// ValEncoder is an internal type registered to cache as needed.
+// Don't confuse jsoniter.ValEncoder with json.Encoder.
+// For json.Encoder's adapter, refer to jsoniter.AdapterEncoder(todo godoc link).
+type ValEncoder interface {
+        IsEmpty(ptr unsafe.Pointer) bool
+        Encode(ptr unsafe.Pointer, stream *Stream)
+}
+
+type checkIsEmpty interface {
+        IsEmpty(ptr unsafe.Pointer) bool
+}
+
+type ctx struct {
+        *frozenConfig
+        prefix   string
+        encoders map[reflect2.Type]ValEncoder
+        decoders map[reflect2.Type]ValDecoder
+}
+
+func (b *ctx) caseSensitive() bool {
+        if b.frozenConfig == nil {
+                // default is case-insensitive
+                return false
+        }
+        return b.frozenConfig.caseSensitive
+}
+
+func (b *ctx) append(prefix string) *ctx {
+        return &ctx{
+                frozenConfig: b.frozenConfig,
+                prefix:       b.prefix + " " + prefix,
+                encoders:     b.encoders,
+                decoders:     b.decoders,
+        }
+}
+
+// ReadVal copy the underlying JSON into go interface, same as json.Unmarshal
+func (iter *Iterator) ReadVal(obj interface{}) {
+        depth := iter.depth
+        cacheKey := reflect2.RTypeOf(obj)
+        decoder := iter.cfg.getDecoderFromCache(cacheKey)
+        if decoder == nil {
+                typ := reflect2.TypeOf(obj)
+                if typ == nil || typ.Kind() != reflect.Ptr {
+                        iter.ReportError("ReadVal", "can only unmarshal into pointer")
+                        return
+                }
+                decoder = iter.cfg.DecoderOf(typ)
+        }
+        ptr := reflect2.PtrOf(obj)
+        if ptr == nil {
+                iter.ReportError("ReadVal", "can not read into nil pointer")
+                return
+        }
+        decoder.Decode(ptr, iter)
+        if iter.depth != depth {
+                iter.ReportError("ReadVal", "unexpected mismatched nesting")
+                return
+        }
+}
+
+// WriteVal copy the go interface into underlying JSON, same as json.Marshal
+func (stream *Stream) WriteVal(val interface{}) {
+        if nil == val {
+                stream.WriteNil()
+                return
+        }
+        cacheKey := reflect2.RTypeOf(val)
+        encoder := stream.cfg.getEncoderFromCache(cacheKey)
+        if encoder == nil {
+                typ := reflect2.TypeOf(val)
+                encoder = stream.cfg.EncoderOf(typ)
+        }
+        encoder.Encode(reflect2.PtrOf(val), stream)
+}
+
+func (cfg *frozenConfig) DecoderOf(typ reflect2.Type) ValDecoder {
+        cacheKey := typ.RType()
+        decoder := cfg.getDecoderFromCache(cacheKey)
+        if decoder != nil {
+                return decoder
+        }
+        ctx := &ctx{
+                frozenConfig: cfg,
+                prefix:       "",
+                decoders:     map[reflect2.Type]ValDecoder{},
+                encoders:     map[reflect2.Type]ValEncoder{},
+        }
+        ptrType := typ.(*reflect2.UnsafePtrType)
+        decoder = decoderOfType(ctx, ptrType.Elem())
+        cfg.addDecoderToCache(cacheKey, decoder)
+        return decoder
+}
+
+func decoderOfType(ctx *ctx, typ reflect2.Type) ValDecoder {
+        decoder := getTypeDecoderFromExtension(ctx, typ)
+        if decoder != nil {
+                return decoder
+        }
+        decoder = createDecoderOfType(ctx, typ)
+        for _, extension := range extensions {
+                decoder = extension.DecorateDecoder(typ, decoder)
+        }
+        decoder = ctx.decoderExtension.DecorateDecoder(typ, decoder)
+        for _, extension := range ctx.extraExtensions {
+                decoder = extension.DecorateDecoder(typ, decoder)
+        }
+        return decoder
+}
+
+func createDecoderOfType(ctx *ctx, typ reflect2.Type) ValDecoder {
+        decoder := ctx.decoders[typ]
+        if decoder != nil {
+                return decoder
+        }
+        placeholder := &placeholderDecoder{}
+        ctx.decoders[typ] = placeholder
+        decoder = _createDecoderOfType(ctx, typ)
+        placeholder.decoder = decoder
+        return decoder
+}
+
+func _createDecoderOfType(ctx *ctx, typ reflect2.Type) ValDecoder {
+        decoder := createDecoderOfJsonRawMessage(ctx, typ)
+        if decoder != nil {
+                return decoder
+        }
+        decoder = createDecoderOfJsonNumber(ctx, typ)
+        if decoder != nil {
+                return decoder
+        }
+        decoder = createDecoderOfMarshaler(ctx, typ)
+        if decoder != nil {
+                return decoder
+        }
+        decoder = createDecoderOfAny(ctx, typ)
+        if decoder != nil {
+                return decoder
+        }
+        decoder = createDecoderOfNative(ctx, typ)
+        if decoder != nil {
+                return decoder
+        }
+        switch typ.Kind() {
+        case reflect.Interface:
+                ifaceType, isIFace := typ.(*reflect2.UnsafeIFaceType)
+                if isIFace {
+                        return &ifaceDecoder{valType: ifaceType}
+                }
+                return &efaceDecoder{}
+        case reflect.Struct:
+                return decoderOfStruct(ctx, typ)
+        case reflect.Array:
+                return decoderOfArray(ctx, typ)
+        case reflect.Slice:
+                return decoderOfSlice(ctx, typ)
+        case reflect.Map:
+                return decoderOfMap(ctx, typ)
+        case reflect.Ptr:
+                return decoderOfOptional(ctx, typ)
+        default:
+                return &lazyErrorDecoder{err: fmt.Errorf("%s%s is unsupported type", ctx.prefix, typ.String())}
+        }
+}
+
+func (cfg *frozenConfig) EncoderOf(typ reflect2.Type) ValEncoder {
+        cacheKey := typ.RType()
+        encoder := cfg.getEncoderFromCache(cacheKey)
+        if encoder != nil {
+                return encoder
+        }
+        ctx := &ctx{
+                frozenConfig: cfg,
+                prefix:       "",
+                decoders:     map[reflect2.Type]ValDecoder{},
+                encoders:     map[reflect2.Type]ValEncoder{},
+        }
+        encoder = encoderOfType(ctx, typ)
+        if typ.LikePtr() {
+                encoder = &onePtrEncoder{encoder}
+        }
+        cfg.addEncoderToCache(cacheKey, encoder)
+        return encoder
+}
+
+type onePtrEncoder struct {
+        encoder ValEncoder
+}
+
+func (encoder *onePtrEncoder) IsEmpty(ptr unsafe.Pointer) bool {
+        return encoder.encoder.IsEmpty(unsafe.Pointer(&ptr))
+}
+
+func (encoder *onePtrEncoder) Encode(ptr unsafe.Pointer, stream *Stream) {
+        encoder.encoder.Encode(unsafe.Pointer(&ptr), stream)
+}
+
+func encoderOfType(ctx *ctx, typ reflect2.Type) ValEncoder {
+        encoder := getTypeEncoderFromExtension(ctx, typ)
+        if encoder != nil {
+                return encoder
+        }
+        encoder = createEncoderOfType(ctx, typ)
+        for _, extension := range extensions {
+                encoder = extension.DecorateEncoder(typ, encoder)
+        }
+        encoder = ctx.encoderExtension.DecorateEncoder(typ, encoder)
+        for _, extension := range ctx.extraExtensions {
+                encoder = extension.DecorateEncoder(typ, encoder)
+        }
+        return encoder
+}
+
+func createEncoderOfType(ctx *ctx, typ reflect2.Type) ValEncoder {
+        encoder := ctx.encoders[typ]
+        if encoder != nil {
+                return encoder
+        }
+        placeholder := &placeholderEncoder{}
+        ctx.encoders[typ] = placeholder
+        encoder = _createEncoderOfType(ctx, typ)
+        placeholder.encoder = encoder
+        return encoder
+}
+func _createEncoderOfType(ctx *ctx, typ reflect2.Type) ValEncoder {
+        encoder := createEncoderOfJsonRawMessage(ctx, typ)
+        if encoder != nil {
+                return encoder
+        }
+        encoder = createEncoderOfJsonNumber(ctx, typ)
+        if encoder != nil {
+                return encoder
+        }
+        encoder = createEncoderOfMarshaler(ctx, typ)
+        if encoder != nil {
+                return encoder
+        }
+        encoder = createEncoderOfAny(ctx, typ)
+        if encoder != nil {
+                return encoder
+        }
+        encoder = createEncoderOfNative(ctx, typ)
+        if encoder != nil {
+                return encoder
+        }
+        kind := typ.Kind()
+        switch kind {
+        case reflect.Interface:
+                return &dynamicEncoder{typ}
+        case reflect.Struct:
+                return encoderOfStruct(ctx, typ)
+        case reflect.Array:
+                return encoderOfArray(ctx, typ)
+        case reflect.Slice:
+                return encoderOfSlice(ctx, typ)
+        case reflect.Map:
+                return encoderOfMap(ctx, typ)
+        case reflect.Ptr:
+                return encoderOfOptional(ctx, typ)
+        default:
+                return &lazyErrorEncoder{err: fmt.Errorf("%s%s is unsupported type", ctx.prefix, typ.String())}
+        }
+}
+
+type lazyErrorDecoder struct {
+        err error
+}
+
+func (decoder *lazyErrorDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) {
+        if iter.WhatIsNext() != NilValue {
+                if iter.Error == nil {
+                        iter.Error = decoder.err
+                }
+        } else {
+                iter.Skip()
+        }
+}
+
+type lazyErrorEncoder struct {
+        err error
+}
+
+func (encoder *lazyErrorEncoder) Encode(ptr unsafe.Pointer, stream *Stream) {
+        if ptr == nil {
+                stream.WriteNil()
+        } else if stream.Error == nil {
+                stream.Error = encoder.err
+        }
+}
+
+func (encoder *lazyErrorEncoder) IsEmpty(ptr unsafe.Pointer) bool {
+        return false
+}
+
+type placeholderDecoder struct {
+        decoder ValDecoder
+}
+
+func (decoder *placeholderDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) {
+        decoder.decoder.Decode(ptr, iter)
+}
+
+type placeholderEncoder struct {
+        encoder ValEncoder
+}
+
+func (encoder *placeholderEncoder) Encode(ptr unsafe.Pointer, stream *Stream) {
+        encoder.encoder.Encode(ptr, stream)
+}
+
+func (encoder *placeholderEncoder) IsEmpty(ptr unsafe.Pointer) bool {
+        return encoder.encoder.IsEmpty(ptr)
+}
diff --git a/vendor/github.com/json-iterator/go/reflect_array.go b/vendor/github.com/json-iterator/go/reflect_array.go
new file mode 100644
index 0000000..13a0b7b
--- /dev/null
+++ b/vendor/github.com/json-iterator/go/reflect_array.go
@@ -0,0 +1,104 @@
+package jsoniter
+
+import (
+        "fmt"
+        "github.com/modern-go/reflect2"
+        "io"
+        "unsafe"
+)
+
+func decoderOfArray(ctx *ctx, typ reflect2.Type) ValDecoder {
+        arrayType := typ.(*reflect2.UnsafeArrayType)
+        decoder := decoderOfType(ctx.append("[arrayElem]"), arrayType.Elem())
+        return &arrayDecoder{arrayType, decoder}
+}
+
+func encoderOfArray(ctx *ctx, typ reflect2.Type) ValEncoder {
+        arrayType := typ.(*reflect2.UnsafeArrayType)
+        if arrayType.Len() == 0 {
+                return emptyArrayEncoder{}
+        }
+        encoder := encoderOfType(ctx.append("[arrayElem]"), arrayType.Elem())
+        return &arrayEncoder{arrayType, encoder}
+}
+
+type emptyArrayEncoder struct{}
+
+func (encoder emptyArrayEncoder) Encode(ptr unsafe.Pointer, stream *Stream) {
+        stream.WriteEmptyArray()
+}
+
+func (encoder emptyArrayEncoder) IsEmpty(ptr unsafe.Pointer) bool {
+        return true
+}
+
+type arrayEncoder struct {
+        arrayType   *reflect2.UnsafeArrayType
+        elemEncoder ValEncoder
+}
+
+func (encoder *arrayEncoder) Encode(ptr unsafe.Pointer, stream *Stream) {
+        stream.WriteArrayStart()
+        elemPtr := unsafe.Pointer(ptr)
+        encoder.elemEncoder.Encode(elemPtr, stream)
+        for i := 1; i < encoder.arrayType.Len(); i++ {
+                stream.WriteMore()
+                elemPtr = encoder.arrayType.UnsafeGetIndex(ptr, i)
+                encoder.elemEncoder.Encode(elemPtr, stream)
+        }
+        stream.WriteArrayEnd()
+        if stream.Error != nil && stream.Error != io.EOF {
+                stream.Error = fmt.Errorf("%v: %s", encoder.arrayType, stream.Error.Error())
+        }
+}
+
+func (encoder *arrayEncoder) IsEmpty(ptr unsafe.Pointer) bool {
+        return false
+}
+
+type arrayDecoder struct {
+        arrayType   *reflect2.UnsafeArrayType
+        elemDecoder ValDecoder
+}
+
+func (decoder *arrayDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) {
+        decoder.doDecode(ptr, iter)
+        if iter.Error != nil && iter.Error != io.EOF {
+                iter.Error = fmt.Errorf("%v: %s", decoder.arrayType, iter.Error.Error())
+        }
+}
+
+func (decoder *arrayDecoder) doDecode(ptr unsafe.Pointer, iter *Iterator) {
+        c := iter.nextToken()
+        arrayType := decoder.arrayType
+        if c == 'n' {
+                iter.skipThreeBytes('u', 'l', 'l')
+                return
+        }
+        if c != '[' {
+                iter.ReportError("decode array", "expect [ or n, but found "+string([]byte{c}))
+                return
+        }
+        c = iter.nextToken()
+        if c == ']' {
+                return
+        }
+        iter.unreadByte()
+        elemPtr := arrayType.UnsafeGetIndex(ptr, 0)
+        decoder.elemDecoder.Decode(elemPtr, iter)
+        length := 1
+        for c = iter.nextToken(); c == ','; c = iter.nextToken() {
+                if length >= arrayType.Len() {
+                        iter.Skip()
+                        continue
+                }
+                idx := length
+                length += 1
+                elemPtr = arrayType.UnsafeGetIndex(ptr, idx)
+                decoder.elemDecoder.Decode(elemPtr, iter)
+        }
+        if c != ']' {
+                iter.ReportError("decode array", "expect ], but found "+string([]byte{c}))
+                return
+        }
+}
diff --git a/vendor/github.com/json-iterator/go/reflect_dynamic.go b/vendor/github.com/json-iterator/go/reflect_dynamic.go
new file mode 100644
index 0000000..8b6bc8b
--- /dev/null
+++ b/vendor/github.com/json-iterator/go/reflect_dynamic.go
@@ -0,0 +1,70 @@
+package jsoniter
+
+import (
+        "github.com/modern-go/reflect2"
+        "reflect"
+        "unsafe"
+)
+
+type dynamicEncoder struct {
+        valType reflect2.Type
+}
+
+func (encoder *dynamicEncoder) Encode(ptr unsafe.Pointer, stream *Stream) {
+        obj := encoder.valType.UnsafeIndirect(ptr)
+        stream.WriteVal(obj)
+}
+
+func (encoder *dynamicEncoder) IsEmpty(ptr unsafe.Pointer) bool {
+        return encoder.valType.UnsafeIndirect(ptr) == nil
+}
+
+type efaceDecoder struct {
+}
+
+func (decoder *efaceDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) {
+        pObj := (*interface{})(ptr)
+        obj := *pObj
+        if obj == nil {
+                *pObj = iter.Read()
+                return
+        }
+        typ := reflect2.TypeOf(obj)
+        if typ.Kind() != reflect.Ptr {
+                *pObj = iter.Read()
+                return
+        }
+        ptrType := typ.(*reflect2.UnsafePtrType)
+        ptrElemType := ptrType.Elem()
+        if iter.WhatIsNext() == NilValue {
+                if ptrElemType.Kind() != reflect.Ptr {
+                        iter.skipFourBytes('n', 'u', 'l', 'l')
+                        *pObj = nil
+                        return
+                }
+        }
+        if reflect2.IsNil(obj) {
+                obj := ptrElemType.New()
+                iter.ReadVal(obj)
+                *pObj = obj
+                return
+        }
+        iter.ReadVal(obj)
+}
+
+type ifaceDecoder struct {
+        valType *reflect2.UnsafeIFaceType
+}
+
+func (decoder *ifaceDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) {
+        if iter.ReadNil() {
+                decoder.valType.UnsafeSet(ptr, decoder.valType.UnsafeNew())
+                return
+        }
+        obj := decoder.valType.UnsafeIndirect(ptr)
+        if reflect2.IsNil(obj) {
+                iter.ReportError("decode non empty interface", "can not unmarshal into nil")
+                return
+        }
+        iter.ReadVal(obj)
+}
diff --git a/vendor/github.com/json-iterator/go/reflect_extension.go b/vendor/github.com/json-iterator/go/reflect_extension.go
new file mode 100644
index 0000000..74a97bf
--- /dev/null
+++ b/vendor/github.com/json-iterator/go/reflect_extension.go
@@ -0,0 +1,483 @@
+package jsoniter
+
+import (
+        "fmt"
+        "github.com/modern-go/reflect2"
+        "reflect"
+        "sort"
+        "strings"
+        "unicode"
+        "unsafe"
+)
+
+var typeDecoders = map[string]ValDecoder{}
+var fieldDecoders = map[string]ValDecoder{}
+var typeEncoders = map[string]ValEncoder{}
+var fieldEncoders = map[string]ValEncoder{}
+var extensions = []Extension{}
+
+// StructDescriptor describe how should we encode/decode the struct
+type StructDescriptor struct {
+        Type   reflect2.Type
+        Fields []*Binding
+}
+
+// GetField get one field from the descriptor by its name.
+// Can not use map here to keep field orders.
+func (structDescriptor *StructDescriptor) GetField(fieldName string) *Binding {
+        for _, binding := range structDescriptor.Fields {
+                if binding.Field.Name() == fieldName {
+                        return binding
+                }
+        }
+        return nil
+}
+
+// Binding describe how should we encode/decode the struct field
+type Binding struct {
+        levels    []int
+        Field     reflect2.StructField
+        FromNames []string
+        ToNames   []string
+        Encoder   ValEncoder
+        Decoder   ValDecoder
+}
+
+// Extension the one for all SPI. Customize encoding/decoding by specifying alternate encoder/decoder.
+// Can also rename fields by UpdateStructDescriptor.
+type Extension interface {
+        UpdateStructDescriptor(structDescriptor *StructDescriptor)
+        CreateMapKeyDecoder(typ reflect2.Type) ValDecoder
+        CreateMapKeyEncoder(typ reflect2.Type) ValEncoder
+        CreateDecoder(typ reflect2.Type) ValDecoder
+        CreateEncoder(typ reflect2.Type) ValEncoder
+        DecorateDecoder(typ reflect2.Type, decoder ValDecoder) ValDecoder
+        DecorateEncoder(typ reflect2.Type, encoder ValEncoder) ValEncoder
+}
+
+// DummyExtension embed this type get dummy implementation for all methods of Extension
+type DummyExtension struct {
+}
+
+// UpdateStructDescriptor No-op
+func (extension *DummyExtension) UpdateStructDescriptor(structDescriptor *StructDescriptor) {
+}
+
+// CreateMapKeyDecoder No-op
+func (extension *DummyExtension) CreateMapKeyDecoder(typ reflect2.Type) ValDecoder {
+        return nil
+}
+
+// CreateMapKeyEncoder No-op
+func (extension *DummyExtension) CreateMapKeyEncoder(typ reflect2.Type) ValEncoder {
+        return nil
+}
+
+// CreateDecoder No-op
+func (extension *DummyExtension) CreateDecoder(typ reflect2.Type) ValDecoder {
+        return nil
+}
+
+// CreateEncoder No-op
+func (extension *DummyExtension) CreateEncoder(typ reflect2.Type) ValEncoder {
+        return nil
+}
+
+// DecorateDecoder No-op
+func (extension *DummyExtension) DecorateDecoder(typ reflect2.Type, decoder ValDecoder) ValDecoder {
+        return decoder
+}
+
+// DecorateEncoder No-op
+func (extension *DummyExtension) DecorateEncoder(typ reflect2.Type, encoder ValEncoder) ValEncoder {
+        return encoder
+}
+
+type EncoderExtension map[reflect2.Type]ValEncoder
+
+// UpdateStructDescriptor No-op
+func (extension EncoderExtension) UpdateStructDescriptor(structDescriptor *StructDescriptor) {
+}
+
+// CreateDecoder No-op
+func (extension EncoderExtension) CreateDecoder(typ reflect2.Type) ValDecoder {
+        return nil
+}
+
+// CreateEncoder get encoder from map
+func (extension EncoderExtension) CreateEncoder(typ reflect2.Type) ValEncoder {
+        return extension[typ]
+}
+
+// CreateMapKeyDecoder No-op
+func (extension EncoderExtension) CreateMapKeyDecoder(typ reflect2.Type) ValDecoder {
+        return nil
+}
+
+// CreateMapKeyEncoder No-op
+func (extension EncoderExtension) CreateMapKeyEncoder(typ reflect2.Type) ValEncoder {
+        return nil
+}
+
+// DecorateDecoder No-op
+func (extension EncoderExtension) DecorateDecoder(typ reflect2.Type, decoder ValDecoder) ValDecoder {
+        return decoder
+}
+
+// DecorateEncoder No-op
+func (extension EncoderExtension) DecorateEncoder(typ reflect2.Type, encoder ValEncoder) ValEncoder {
+        return encoder
+}
+
+type DecoderExtension map[reflect2.Type]ValDecoder
+
+// UpdateStructDescriptor No-op
+func (extension DecoderExtension) UpdateStructDescriptor(structDescriptor *StructDescriptor) {
+}
+
+// CreateMapKeyDecoder No-op
+func (extension DecoderExtension) CreateMapKeyDecoder(typ reflect2.Type) ValDecoder {
+        return nil
+}
+
+// CreateMapKeyEncoder No-op
+func (extension DecoderExtension) CreateMapKeyEncoder(typ reflect2.Type) ValEncoder {
+        return nil
+}
+
+// CreateDecoder get decoder from map
+func (extension DecoderExtension) CreateDecoder(typ reflect2.Type) ValDecoder {
+        return extension[typ]
+}
+
+// CreateEncoder No-op
+func (extension DecoderExtension) CreateEncoder(typ reflect2.Type) ValEncoder {
+        return nil
+}
+
+// DecorateDecoder No-op
+func (extension DecoderExtension) DecorateDecoder(typ reflect2.Type, decoder ValDecoder) ValDecoder {
+        return decoder
+}
+
+// DecorateEncoder No-op
+func (extension DecoderExtension) DecorateEncoder(typ reflect2.Type, encoder ValEncoder) ValEncoder {
+        return encoder
+}
+
+type funcDecoder struct {
+        fun DecoderFunc
+}
+
+func (decoder *funcDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) {
+        decoder.fun(ptr, iter)
+}
+
+type funcEncoder struct {
+        fun         EncoderFunc
+        isEmptyFunc func(ptr unsafe.Pointer) bool
+}
+
+func (encoder *funcEncoder) Encode(ptr unsafe.Pointer, stream *Stream) {
+        encoder.fun(ptr, stream)
+}
+
+func (encoder *funcEncoder) IsEmpty(ptr unsafe.Pointer) bool {
+        if encoder.isEmptyFunc == nil {
+                return false
+        }
+        return encoder.isEmptyFunc(ptr)
+}
+
+// DecoderFunc the function form of TypeDecoder
+type DecoderFunc func(ptr unsafe.Pointer, iter *Iterator)
+
+// EncoderFunc the function form of TypeEncoder
+type EncoderFunc func(ptr unsafe.Pointer, stream *Stream)
+
+// RegisterTypeDecoderFunc register TypeDecoder for a type with function
+func RegisterTypeDecoderFunc(typ string, fun DecoderFunc) {
+        typeDecoders[typ] = &funcDecoder{fun}
+}
+
+// RegisterTypeDecoder register TypeDecoder for a typ
+func RegisterTypeDecoder(typ string, decoder ValDecoder) {
+        typeDecoders[typ] = decoder
+}
+
+// RegisterFieldDecoderFunc register TypeDecoder for a struct field with function
+func RegisterFieldDecoderFunc(typ string, field string, fun DecoderFunc) {
+        RegisterFieldDecoder(typ, field, &funcDecoder{fun})
+}
+
+// RegisterFieldDecoder register TypeDecoder for a struct field
+func RegisterFieldDecoder(typ string, field string, decoder ValDecoder) {
+        fieldDecoders[fmt.Sprintf("%s/%s", typ, field)] = decoder
+}
+
+// RegisterTypeEncoderFunc register TypeEncoder for a type with encode/isEmpty function
+func RegisterTypeEncoderFunc(typ string, fun EncoderFunc, isEmptyFunc func(unsafe.Pointer) bool) {
+        typeEncoders[typ] = &funcEncoder{fun, isEmptyFunc}
+}
+
+// RegisterTypeEncoder register TypeEncoder for a type
+func RegisterTypeEncoder(typ string, encoder ValEncoder) {
+        typeEncoders[typ] = encoder
+}
+
+// RegisterFieldEncoderFunc register TypeEncoder for a struct field with encode/isEmpty function
+func RegisterFieldEncoderFunc(typ string, field string, fun EncoderFunc, isEmptyFunc func(unsafe.Pointer) bool) {
+        RegisterFieldEncoder(typ, field, &funcEncoder{fun, isEmptyFunc})
+}
+
+// RegisterFieldEncoder register TypeEncoder for a struct field
+func RegisterFieldEncoder(typ string, field string, encoder ValEncoder) {
+        fieldEncoders[fmt.Sprintf("%s/%s", typ, field)] = encoder
+}
+
+// RegisterExtension register extension
+func RegisterExtension(extension Extension) {
+        extensions = append(extensions, extension)
+}
+
+func getTypeDecoderFromExtension(ctx *ctx, typ reflect2.Type) ValDecoder {
+        decoder := _getTypeDecoderFromExtension(ctx, typ)
+        if decoder != nil {
+                for _, extension := range extensions {
+                        decoder = extension.DecorateDecoder(typ, decoder)
+                }
+                decoder = ctx.decoderExtension.DecorateDecoder(typ, decoder)
+                for _, extension := range ctx.extraExtensions {
+                        decoder = extension.DecorateDecoder(typ, decoder)
+                }
+        }
+        return decoder
+}
+func _getTypeDecoderFromExtension(ctx *ctx, typ reflect2.Type) ValDecoder {
+        for _, extension := range extensions {
+                decoder := extension.CreateDecoder(typ)
+                if decoder != nil {
+                        return decoder
+                }
+        }
+        decoder := ctx.decoderExtension.CreateDecoder(typ)
+        if decoder != nil {
+                return decoder
+        }
+        for _, extension := range ctx.extraExtensions {
+                decoder := extension.CreateDecoder(typ)
+                if decoder != nil {
+                        return decoder
+                }
+        }
+        typeName := typ.String()
+        decoder = typeDecoders[typeName]
+        if decoder != nil {
+                return decoder
+        }
+        if typ.Kind() == reflect.Ptr {
+                ptrType := typ.(*reflect2.UnsafePtrType)
+                decoder := typeDecoders[ptrType.Elem().String()]
+                if decoder != nil {
+                        return &OptionalDecoder{ptrType.Elem(), decoder}
+                }
+        }
+        return nil
+}
+
+func getTypeEncoderFromExtension(ctx *ctx, typ reflect2.Type) ValEncoder {
+        encoder := _getTypeEncoderFromExtension(ctx, typ)
+        if encoder != nil {
+                for _, extension := range extensions {
+                        encoder = extension.DecorateEncoder(typ, encoder)
+                }
+                encoder = ctx.encoderExtension.DecorateEncoder(typ, encoder)
+                for _, extension := range ctx.extraExtensions {
+                        encoder = extension.DecorateEncoder(typ, encoder)
+                }
+        }
+        return encoder
+}
+
+func _getTypeEncoderFromExtension(ctx *ctx, typ reflect2.Type) ValEncoder {
+        for _, extension := range extensions {
+                encoder := extension.CreateEncoder(typ)
+                if encoder != nil {
+                        return encoder
+                }
+        }
+        encoder := ctx.encoderExtension.CreateEncoder(typ)
+        if encoder != nil {
+                return encoder
+        }
+        for _, extension := range ctx.extraExtensions {
+                encoder := extension.CreateEncoder(typ)
+                if encoder != nil {
+                        return encoder
+                }
+        }
+        typeName := typ.String()
+        encoder = typeEncoders[typeName]
+        if encoder != nil {
+                return encoder
+        }
+        if typ.Kind() == reflect.Ptr {
+                typePtr := typ.(*reflect2.UnsafePtrType)
+                encoder := typeEncoders[typePtr.Elem().String()]
+                if encoder != nil {
+                        return &OptionalEncoder{encoder}
+                }
+        }
+        return nil
+}
+
+func describeStruct(ctx *ctx, typ reflect2.Type) *StructDescriptor {
+        structType := typ.(*reflect2.UnsafeStructType)
+        embeddedBindings := []*Binding{}
+        bindings := []*Binding{}
+        for i := 0; i < structType.NumField(); i++ {
+                field := structType.Field(i)
+                tag, hastag := field.Tag().Lookup(ctx.getTagKey())
+                if ctx.onlyTaggedField && !hastag && !field.Anonymous() {
+                        continue
+                }
+                if tag == "-" || field.Name() == "_" {
+                        continue
+                }
+                tagParts := strings.Split(tag, ",")
+                if field.Anonymous() && (tag == "" || tagParts[0] == "") {
+                        if field.Type().Kind() == reflect.Struct {
+                                structDescriptor := describeStruct(ctx, field.Type())
+                                for _, binding := range structDescriptor.Fields {
+                                        binding.levels = append([]int{i}, binding.levels...)
+                                        omitempty := binding.Encoder.(*structFieldEncoder).omitempty
+                                        binding.Encoder = &structFieldEncoder{field, binding.Encoder, omitempty}
+                                        binding.Decoder = &structFieldDecoder{field, binding.Decoder}
+                                        embeddedBindings = append(embeddedBindings, binding)
+                                }
+                                continue
+                        } else if field.Type().Kind() == reflect.Ptr {
+                                ptrType := field.Type().(*reflect2.UnsafePtrType)
+                                if ptrType.Elem().Kind() == reflect.Struct {
+                                        structDescriptor := describeStruct(ctx, ptrType.Elem())
+                                        for _, binding := range structDescriptor.Fields {
+                                                binding.levels = append([]int{i}, binding.levels...)
+                                                omitempty := binding.Encoder.(*structFieldEncoder).omitempty
+                                                binding.Encoder = &dereferenceEncoder{binding.Encoder}
+                                                binding.Encoder = &structFieldEncoder{field, binding.Encoder, omitempty}
+                                                binding.Decoder = &dereferenceDecoder{ptrType.Elem(), binding.Decoder}
+                                                binding.Decoder = &structFieldDecoder{field, binding.Decoder}
+                                                embeddedBindings = append(embeddedBindings, binding)
+                                        }
+                                        continue
+                                }
+                        }
+                }
+                fieldNames := calcFieldNames(field.Name(), tagParts[0], tag)
+                fieldCacheKey := fmt.Sprintf("%s/%s", typ.String(), field.Name())
+                decoder := fieldDecoders[fieldCacheKey]
+                if decoder == nil {
+                        decoder = decoderOfType(ctx.append(field.Name()), field.Type())
+                }
+                encoder := fieldEncoders[fieldCacheKey]
+                if encoder == nil {
+                        encoder = encoderOfType(ctx.append(field.Name()), field.Type())
+                }
+                binding := &Binding{
+                        Field:     field,
+                        FromNames: fieldNames,
+                        ToNames:   fieldNames,
+                        Decoder:   decoder,
+                        Encoder:   encoder,
+                }
+                binding.levels = []int{i}
+                bindings = append(bindings, binding)
+        }
+        return createStructDescriptor(ctx, typ, bindings, embeddedBindings)
+}
+func createStructDescriptor(ctx *ctx, typ reflect2.Type, bindings []*Binding, embeddedBindings []*Binding) *StructDescriptor {
+        structDescriptor := &StructDescriptor{
+                Type:   typ,
+                Fields: bindings,
+        }
+        for _, extension := range extensions {
+                extension.UpdateStructDescriptor(structDescriptor)
+        }
+        ctx.encoderExtension.UpdateStructDescriptor(structDescriptor)
+        ctx.decoderExtension.UpdateStructDescriptor(structDescriptor)
+        for _, extension := range ctx.extraExtensions {
+                extension.UpdateStructDescriptor(structDescriptor)
+        }
+        processTags(structDescriptor, ctx.frozenConfig)
+        // merge normal & embedded bindings & sort with original order
+        allBindings := sortableBindings(append(embeddedBindings, structDescriptor.Fields...))
+        sort.Sort(allBindings)
+        structDescriptor.Fields = allBindings
+        return structDescriptor
+}
+
+type sortableBindings []*Binding
+
+func (bindings sortableBindings) Len() int {
+        return len(bindings)
+}
+
+func (bindings sortableBindings) Less(i, j int) bool {
+        left := bindings[i].levels
+        right := bindings[j].levels
+        k := 0
+        for {
+                if left[k] < right[k] {
+                        return true
+                } else if left[k] > right[k] {
+                        return false
+                }
+                k++
+        }
+}
+
+func (bindings sortableBindings) Swap(i, j int) {
+        bindings[i], bindings[j] = bindings[j], bindings[i]
+}
+
+func processTags(structDescriptor *StructDescriptor, cfg *frozenConfig) {
+        for _, binding := range structDescriptor.Fields {
+                shouldOmitEmpty := false
+                tagParts := strings.Split(binding.Field.Tag().Get(cfg.getTagKey()), ",")
+                for _, tagPart := range tagParts[1:] {
+                        if tagPart == "omitempty" {
+                                shouldOmitEmpty = true
+                        } else if tagPart == "string" {
+                                if binding.Field.Type().Kind() == reflect.String {
+                                        binding.Decoder = &stringModeStringDecoder{binding.Decoder, cfg}
+                                        binding.Encoder = &stringModeStringEncoder{binding.Encoder, cfg}
+                                } else {
+                                        binding.Decoder = &stringModeNumberDecoder{binding.Decoder}
+                                        binding.Encoder = &stringModeNumberEncoder{binding.Encoder}
+                                }
+                        }
+                }
+                binding.Decoder = &structFieldDecoder{binding.Field, binding.Decoder}
+                binding.Encoder = &structFieldEncoder{binding.Field, binding.Encoder, shouldOmitEmpty}
+        }
+}
+
+func calcFieldNames(originalFieldName string, tagProvidedFieldName string, wholeTag string) []string {
+        // ignore?
+        if wholeTag == "-" {
+                return []string{}
+        }
+        // rename?
+        var fieldNames []string
+        if tagProvidedFieldName == "" {
+                fieldNames = []string{originalFieldName}
+        } else {
+                fieldNames = []string{tagProvidedFieldName}
+        }
+        // private?
+        isNotExported := unicode.IsLower(rune(originalFieldName[0])) || originalFieldName[0] == '_'
+        if isNotExported {
+                fieldNames = []string{}
+        }
+        return fieldNames
+}
diff --git a/vendor/github.com/json-iterator/go/reflect_json_number.go b/vendor/github.com/json-iterator/go/reflect_json_number.go
new file mode 100644
index 0000000..98d45c1
--- /dev/null
+++ b/vendor/github.com/json-iterator/go/reflect_json_number.go
@@ -0,0 +1,112 @@
+package jsoniter
+
+import (
+        "encoding/json"
+        "github.com/modern-go/reflect2"
+        "strconv"
+        "unsafe"
+)
+
+type Number string
+
+// String returns the literal text of the number.
+func (n Number) String() string { return string(n) }
+
+// Float64 returns the number as a float64.
+func (n Number) Float64() (float64, error) {
+        return strconv.ParseFloat(string(n), 64)
+}
+
+// Int64 returns the number as an int64.
+func (n Number) Int64() (int64, error) {
+        return strconv.ParseInt(string(n), 10, 64)
+}
+
+func CastJsonNumber(val interface{}) (string, bool) {
+        switch typedVal := val.(type) {
+        case json.Number:
+                return string(typedVal), true
+        case Number:
+                return string(typedVal), true
+        }
+        return "", false
+}
+
+var jsonNumberType = reflect2.TypeOfPtr((*json.Number)(nil)).Elem()
+var jsoniterNumberType = reflect2.TypeOfPtr((*Number)(nil)).Elem()
+
+func createDecoderOfJsonNumber(ctx *ctx, typ reflect2.Type) ValDecoder {
+        if typ.AssignableTo(jsonNumberType) {
+                return &jsonNumberCodec{}
+        }
+        if typ.AssignableTo(jsoniterNumberType) {
+                return &jsoniterNumberCodec{}
+        }
+        return nil
+}
+
+func createEncoderOfJsonNumber(ctx *ctx, typ reflect2.Type) ValEncoder {
+        if typ.AssignableTo(jsonNumberType) {
+                return &jsonNumberCodec{}
+        }
+        if typ.AssignableTo(jsoniterNumberType) {
+                return &jsoniterNumberCodec{}
+        }
+        return nil
+}
+
+type jsonNumberCodec struct {
+}
+
+func (codec *jsonNumberCodec) Decode(ptr unsafe.Pointer, iter *Iterator) {
+        switch iter.WhatIsNext() {
+        case StringValue:
+                *((*json.Number)(ptr)) = json.Number(iter.ReadString())
+        case NilValue:
+                iter.skipFourBytes('n', 'u', 'l', 'l')
+                *((*json.Number)(ptr)) = ""
+        default:
+                *((*json.Number)(ptr)) = json.Number([]byte(iter.readNumberAsString()))
+        }
+}
+
+func (codec *jsonNumberCodec) Encode(ptr unsafe.Pointer, stream *Stream) {
+        number := *((*json.Number)(ptr))
+        if len(number) == 0 {
+                stream.writeByte('0')
+        } else {
+                stream.WriteRaw(string(number))
+        }
+}
+
+func (codec *jsonNumberCodec) IsEmpty(ptr unsafe.Pointer) bool {
+        return len(*((*json.Number)(ptr))) == 0
+}
+
+type jsoniterNumberCodec struct {
+}
+
+func (codec *jsoniterNumberCodec) Decode(ptr unsafe.Pointer, iter *Iterator) {
+        switch iter.WhatIsNext() {
+        case StringValue:
+                *((*Number)(ptr)) = Number(iter.ReadString())
+        case NilValue:
+                iter.skipFourBytes('n', 'u', 'l', 'l')
+                *((*Number)(ptr)) = ""
+        default:
+                *((*Number)(ptr)) = Number([]byte(iter.readNumberAsString()))
+        }
+}
+
+func (codec *jsoniterNumberCodec) Encode(ptr unsafe.Pointer, stream *Stream) {
+        number := *((*Number)(ptr))
+        if len(number) == 0 {
+                stream.writeByte('0')
+        } else {
+                stream.WriteRaw(string(number))
+        }
+}
+
+func (codec *jsoniterNumberCodec) IsEmpty(ptr unsafe.Pointer) bool {
+        return len(*((*Number)(ptr))) == 0
+}
diff --git a/vendor/github.com/json-iterator/go/reflect_json_raw_message.go b/vendor/github.com/json-iterator/go/reflect_json_raw_message.go
new file mode 100644
index 0000000..eba434f
--- /dev/null
+++ b/vendor/github.com/json-iterator/go/reflect_json_raw_message.go
@@ -0,0 +1,76 @@
+package jsoniter
+
+import (
+        "encoding/json"
+        "github.com/modern-go/reflect2"
+        "unsafe"
+)
+
+var jsonRawMessageType = reflect2.TypeOfPtr((*json.RawMessage)(nil)).Elem()
+var jsoniterRawMessageType = reflect2.TypeOfPtr((*RawMessage)(nil)).Elem()
+
+func createEncoderOfJsonRawMessage(ctx *ctx, typ reflect2.Type) ValEncoder {
+        if typ == jsonRawMessageType {
+                return &jsonRawMessageCodec{}
+        }
+        if typ == jsoniterRawMessageType {
+                return &jsoniterRawMessageCodec{}
+        }
+        return nil
+}
+
+func createDecoderOfJsonRawMessage(ctx *ctx, typ reflect2.Type) ValDecoder {
+        if typ == jsonRawMessageType {
+                return &jsonRawMessageCodec{}
+        }
+        if typ == jsoniterRawMessageType {
+                return &jsoniterRawMessageCodec{}
+        }
+        return nil
+}
+
+type jsonRawMessageCodec struct {
+}
+
+func (codec *jsonRawMessageCodec) Decode(ptr unsafe.Pointer, iter *Iterator) {
+        if iter.ReadNil() {
+                *((*json.RawMessage)(ptr)) = nil
+        } else {
+                *((*json.RawMessage)(ptr)) = iter.SkipAndReturnBytes()
+        }
+}
+
+func (codec *jsonRawMessageCodec) Encode(ptr unsafe.Pointer, stream *Stream) {
+        if *((*json.RawMessage)(ptr)) == nil {
+                stream.WriteNil()
+        } else {
+                stream.WriteRaw(string(*((*json.RawMessage)(ptr))))
+        }
+}
+
+func (codec *jsonRawMessageCodec) IsEmpty(ptr unsafe.Pointer) bool {
+        return len(*((*json.RawMessage)(ptr))) == 0
+}
+
+type jsoniterRawMessageCodec struct {
+}
+
+func (codec *jsoniterRawMessageCodec) Decode(ptr unsafe.Pointer, iter *Iterator) {
+        if iter.ReadNil() {
+                *((*RawMessage)(ptr)) = nil
+        } else {
+                *((*RawMessage)(ptr)) = iter.SkipAndReturnBytes()
+        }
+}
+
+func (codec *jsoniterRawMessageCodec) Encode(ptr unsafe.Pointer, stream *Stream) {
+        if *((*RawMessage)(ptr)) == nil {
+                stream.WriteNil()
+        } else {
+                stream.WriteRaw(string(*((*RawMessage)(ptr))))
+        }
+}
+
+func (codec *jsoniterRawMessageCodec) IsEmpty(ptr unsafe.Pointer) bool {
+        return len(*((*RawMessage)(ptr))) == 0
+}
diff --git a/vendor/github.com/json-iterator/go/reflect_map.go b/vendor/github.com/json-iterator/go/reflect_map.go
new file mode 100644
index 0000000..5829671
--- /dev/null
+++ b/vendor/github.com/json-iterator/go/reflect_map.go
@@ -0,0 +1,346 @@
+package jsoniter
+
+import (
+        "fmt"
+        "github.com/modern-go/reflect2"
+        "io"
+        "reflect"
+        "sort"
+        "unsafe"
+)
+
+func decoderOfMap(ctx *ctx, typ reflect2.Type) ValDecoder {
+        mapType := typ.(*reflect2.UnsafeMapType)
+        keyDecoder := decoderOfMapKey(ctx.append("[mapKey]"), mapType.Key())
+        elemDecoder := decoderOfType(ctx.append("[mapElem]"), mapType.Elem())
+        return &mapDecoder{
+                mapType:     mapType,
+                keyType:     mapType.Key(),
+                elemType:    mapType.Elem(),
+                keyDecoder:  keyDecoder,
+                elemDecoder: elemDecoder,
+        }
+}
+
+func encoderOfMap(ctx *ctx, typ reflect2.Type) ValEncoder {
+        mapType := typ.(*reflect2.UnsafeMapType)
+        if ctx.sortMapKeys {
+                return &sortKeysMapEncoder{
+                        mapType:     mapType,
+                        keyEncoder:  encoderOfMapKey(ctx.append("[mapKey]"), mapType.Key()),
+                        elemEncoder: encoderOfType(ctx.append("[mapElem]"), mapType.Elem()),
+                }
+        }
+        return &mapEncoder{
+                mapType:     mapType,
+                keyEncoder:  encoderOfMapKey(ctx.append("[mapKey]"), mapType.Key()),
+                elemEncoder: encoderOfType(ctx.append("[mapElem]"), mapType.Elem()),
+        }
+}
+
+func decoderOfMapKey(ctx *ctx, typ reflect2.Type) ValDecoder {
+        decoder := ctx.decoderExtension.CreateMapKeyDecoder(typ)
+        if decoder != nil {
+                return decoder
+        }
+        for _, extension := range ctx.extraExtensions {
+                decoder := extension.CreateMapKeyDecoder(typ)
+                if decoder != nil {
+                        return decoder
+                }
+        }
+
+        ptrType := reflect2.PtrTo(typ)
+        if ptrType.Implements(unmarshalerType) {
+                return &referenceDecoder{
+                        &unmarshalerDecoder{
+                                valType: ptrType,
+                        },
+                }
+        }
+        if typ.Implements(unmarshalerType) {
+                return &unmarshalerDecoder{
+                        valType: typ,
+                }
+        }
+        if ptrType.Implements(textUnmarshalerType) {
+                return &referenceDecoder{
+                        &textUnmarshalerDecoder{
+                                valType: ptrType,
+                        },
+                }
+        }
+        if typ.Implements(textUnmarshalerType) {
+                return &textUnmarshalerDecoder{
+                        valType: typ,
+                }
+        }
+
+        switch typ.Kind() {
+        case reflect.String:
+                return decoderOfType(ctx, reflect2.DefaultTypeOfKind(reflect.String))
+        case reflect.Bool,
+                reflect.Uint8, reflect.Int8,
+                reflect.Uint16, reflect.Int16,
+                reflect.Uint32, reflect.Int32,
+                reflect.Uint64, reflect.Int64,
+                reflect.Uint, reflect.Int,
+                reflect.Float32, reflect.Float64,
+                reflect.Uintptr:
+                typ = reflect2.DefaultTypeOfKind(typ.Kind())
+                return &numericMapKeyDecoder{decoderOfType(ctx, typ)}
+        default:
+                return &lazyErrorDecoder{err: fmt.Errorf("unsupported map key type: %v", typ)}
+        }
+}
+
+func encoderOfMapKey(ctx *ctx, typ reflect2.Type) ValEncoder {
+        encoder := ctx.encoderExtension.CreateMapKeyEncoder(typ)
+        if encoder != nil {
+                return encoder
+        }
+        for _, extension := range ctx.extraExtensions {
+                encoder := extension.CreateMapKeyEncoder(typ)
+                if encoder != nil {
+                        return encoder
+                }
+        }
+
+        if typ == textMarshalerType {
+                return &directTextMarshalerEncoder{
+                        stringEncoder: ctx.EncoderOf(reflect2.TypeOf("")),
+                }
+        }
+        if typ.Implements(textMarshalerType) {
+                return &textMarshalerEncoder{
+                        valType:       typ,
+                        stringEncoder: ctx.EncoderOf(reflect2.TypeOf("")),
+                }
+        }
+
+        switch typ.Kind() {
+        case reflect.String:
+                return encoderOfType(ctx, reflect2.DefaultTypeOfKind(reflect.String))
+        case reflect.Bool,
+                reflect.Uint8, reflect.Int8,
+                reflect.Uint16, reflect.Int16,
+                reflect.Uint32, reflect.Int32,
+                reflect.Uint64, reflect.Int64,
+                reflect.Uint, reflect.Int,
+                reflect.Float32, reflect.Float64,
+                reflect.Uintptr:
+                typ = reflect2.DefaultTypeOfKind(typ.Kind())
+                return &numericMapKeyEncoder{encoderOfType(ctx, typ)}
+        default:
+                if typ.Kind() == reflect.Interface {
+                        return &dynamicMapKeyEncoder{ctx, typ}
+                }
+                return &lazyErrorEncoder{err: fmt.Errorf("unsupported map key type: %v", typ)}
+        }
+}
+
+type mapDecoder struct {
+        mapType     *reflect2.UnsafeMapType
+        keyType     reflect2.Type
+        elemType    reflect2.Type
+        keyDecoder  ValDecoder
+        elemDecoder ValDecoder
+}
+
+func (decoder *mapDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) {
+        mapType := decoder.mapType
+        c := iter.nextToken()
+        if c == 'n' {
+                iter.skipThreeBytes('u', 'l', 'l')
+                *(*unsafe.Pointer)(ptr) = nil
+                mapType.UnsafeSet(ptr, mapType.UnsafeNew())
+                return
+        }
+        if mapType.UnsafeIsNil(ptr) {
+                mapType.UnsafeSet(ptr, mapType.UnsafeMakeMap(0))
+        }
+        if c != '{' {
+                iter.ReportError("ReadMapCB", `expect { or n, but found `+string([]byte{c}))
+                return
+        }
+        c = iter.nextToken()
+        if c == '}' {
+                return
+        }
+        iter.unreadByte()
+        key := decoder.keyType.UnsafeNew()
+        decoder.keyDecoder.Decode(key, iter)
+        c = iter.nextToken()
+        if c != ':' {
+                iter.ReportError("ReadMapCB", "expect : after object field, but found "+string([]byte{c}))
+                return
+        }
+        elem := decoder.elemType.UnsafeNew()
+        decoder.elemDecoder.Decode(elem, iter)
+        decoder.mapType.UnsafeSetIndex(ptr, key, elem)
+        for c = iter.nextToken(); c == ','; c = iter.nextToken() {
+                key := decoder.keyType.UnsafeNew()
+                decoder.keyDecoder.Decode(key, iter)
+                c = iter.nextToken()
+                if c != ':' {
+                        iter.ReportError("ReadMapCB", "expect : after object field, but found "+string([]byte{c}))
+                        return
+                }
+                elem := decoder.elemType.UnsafeNew()
+                decoder.elemDecoder.Decode(elem, iter)
+                decoder.mapType.UnsafeSetIndex(ptr, key, elem)
+        }
+        if c != '}' {
+                iter.ReportError("ReadMapCB", `expect }, but found `+string([]byte{c}))
+        }
+}
+
+type numericMapKeyDecoder struct {
+        decoder ValDecoder
+}
+
+func (decoder *numericMapKeyDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) {
+        c := iter.nextToken()
+        if c != '"' {
+                iter.ReportError("ReadMapCB", `expect ", but found `+string([]byte{c}))
+                return
+        }
+        decoder.decoder.Decode(ptr, iter)
+        c = iter.nextToken()
+        if c != '"' {
+                iter.ReportError("ReadMapCB", `expect ", but found `+string([]byte{c}))
+                return
+        }
+}
+
+type numericMapKeyEncoder struct {
+        encoder ValEncoder
+}
+
+func (encoder *numericMapKeyEncoder) Encode(ptr unsafe.Pointer, stream *Stream) {
+        stream.writeByte('"')
+        encoder.encoder.Encode(ptr, stream)
+        stream.writeByte('"')
+}
+
+func (encoder *numericMapKeyEncoder) IsEmpty(ptr unsafe.Pointer) bool {
+        return false
+}
+
+type dynamicMapKeyEncoder struct {
+        ctx     *ctx
+        valType reflect2.Type
+}
+
+func (encoder *dynamicMapKeyEncoder) Encode(ptr unsafe.Pointer, stream *Stream) {
+        obj := encoder.valType.UnsafeIndirect(ptr)
+        encoderOfMapKey(encoder.ctx, reflect2.TypeOf(obj)).Encode(reflect2.PtrOf(obj), stream)
+}
+
+func (encoder *dynamicMapKeyEncoder) IsEmpty(ptr unsafe.Pointer) bool {
+        obj := encoder.valType.UnsafeIndirect(ptr)
+        return encoderOfMapKey(encoder.ctx, reflect2.TypeOf(obj)).IsEmpty(reflect2.PtrOf(obj))
+}
+
+type mapEncoder struct {
+        mapType     *reflect2.UnsafeMapType
+        keyEncoder  ValEncoder
+        elemEncoder ValEncoder
+}
+
+func (encoder *mapEncoder) Encode(ptr unsafe.Pointer, stream *Stream) {
+        if *(*unsafe.Pointer)(ptr) == nil {
+                stream.WriteNil()
+                return
+        }
+        stream.WriteObjectStart()
+        iter := encoder.mapType.UnsafeIterate(ptr)
+        for i := 0; iter.HasNext(); i++ {
+                if i != 0 {
+                        stream.WriteMore()
+                }
+                key, elem := iter.UnsafeNext()
+                encoder.keyEncoder.Encode(key, stream)
+                if stream.indention > 0 {
+                        stream.writeTwoBytes(byte(':'), byte(' '))
+                } else {
+                        stream.writeByte(':')
+                }
+                encoder.elemEncoder.Encode(elem, stream)
+        }
+        stream.WriteObjectEnd()
+}
+
+func (encoder *mapEncoder) IsEmpty(ptr unsafe.Pointer) bool {
+        iter := encoder.mapType.UnsafeIterate(ptr)
+        return !iter.HasNext()
+}
+
+type sortKeysMapEncoder struct {
+        mapType     *reflect2.UnsafeMapType
+        keyEncoder  ValEncoder
+        elemEncoder ValEncoder
+}
+
+func (encoder *sortKeysMapEncoder) Encode(ptr unsafe.Pointer, stream *Stream) {
+        if *(*unsafe.Pointer)(ptr) == nil {
+                stream.WriteNil()
+                return
+        }
+        stream.WriteObjectStart()
+        mapIter := encoder.mapType.UnsafeIterate(ptr)
+        subStream := stream.cfg.BorrowStream(nil)
+        subStream.Attachment = stream.Attachment
+        subIter := stream.cfg.BorrowIterator(nil)
+        keyValues := encodedKeyValues{}
+        for mapIter.HasNext() {
+                key, elem := mapIter.UnsafeNext()
+                subStreamIndex := subStream.Buffered()
+                encoder.keyEncoder.Encode(key, subStream)
+                if subStream.Error != nil && subStream.Error != io.EOF && stream.Error == nil {
+                        stream.Error = subStream.Error
+                }
+                encodedKey := subStream.Buffer()[subStreamIndex:]
+                subIter.ResetBytes(encodedKey)
+                decodedKey := subIter.ReadString()
+                if stream.indention > 0 {
+                        subStream.writeTwoBytes(byte(':'), byte(' '))
+                } else {
+                        subStream.writeByte(':')
+                }
+                encoder.elemEncoder.Encode(elem, subStream)
+                keyValues = append(keyValues, encodedKV{
+                        key:      decodedKey,
+                        keyValue: subStream.Buffer()[subStreamIndex:],
+                })
+        }
+        sort.Sort(keyValues)
+        for i, keyValue := range keyValues {
+                if i != 0 {
+                        stream.WriteMore()
+                }
+                stream.Write(keyValue.keyValue)
+        }
+        if subStream.Error != nil && stream.Error == nil {
+                stream.Error = subStream.Error
+        }
+        stream.WriteObjectEnd()
+        stream.cfg.ReturnStream(subStream)
+        stream.cfg.ReturnIterator(subIter)
+}
+
+func (encoder *sortKeysMapEncoder) IsEmpty(ptr unsafe.Pointer) bool {
+        iter := encoder.mapType.UnsafeIterate(ptr)
+        return !iter.HasNext()
+}
+
+type encodedKeyValues []encodedKV
+
+type encodedKV struct {
+        key      string
+        keyValue []byte
+}
+
+func (sv encodedKeyValues) Len() int           { return len(sv) }
+func (sv encodedKeyValues) Swap(i, j int)      { sv[i], sv[j] = sv[j], sv[i] }
+func (sv encodedKeyValues) Less(i, j int) bool { return sv[i].key < sv[j].key }
diff --git a/vendor/github.com/json-iterator/go/reflect_marshaler.go b/vendor/github.com/json-iterator/go/reflect_marshaler.go
new file mode 100644
index 0000000..3e21f37
--- /dev/null
+++ b/vendor/github.com/json-iterator/go/reflect_marshaler.go
@@ -0,0 +1,225 @@
+package jsoniter
+
+import (
+        "encoding"
+        "encoding/json"
+        "unsafe"
+
+        "github.com/modern-go/reflect2"
+)
+
+var marshalerType = reflect2.TypeOfPtr((*json.Marshaler)(nil)).Elem()
+var unmarshalerType = reflect2.TypeOfPtr((*json.Unmarshaler)(nil)).Elem()
+var textMarshalerType = reflect2.TypeOfPtr((*encoding.TextMarshaler)(nil)).Elem()
+var textUnmarshalerType = reflect2.TypeOfPtr((*encoding.TextUnmarshaler)(nil)).Elem()
+
+func createDecoderOfMarshaler(ctx *ctx, typ reflect2.Type) ValDecoder {
+        ptrType := reflect2.PtrTo(typ)
+        if ptrType.Implements(unmarshalerType) {
+                return &referenceDecoder{
+                        &unmarshalerDecoder{ptrType},
+                }
+        }
+        if ptrType.Implements(textUnmarshalerType) {
+                return &referenceDecoder{
+                        &textUnmarshalerDecoder{ptrType},
+                }
+        }
+        return nil
+}
+
+func createEncoderOfMarshaler(ctx *ctx, typ reflect2.Type) ValEncoder {
+        if typ == marshalerType {
+                checkIsEmpty := createCheckIsEmpty(ctx, typ)
+                var encoder ValEncoder = &directMarshalerEncoder{
+                        checkIsEmpty: checkIsEmpty,
+                }
+                return encoder
+        }
+        if typ.Implements(marshalerType) {
+                checkIsEmpty := createCheckIsEmpty(ctx, typ)
+                var encoder ValEncoder = &marshalerEncoder{
+                        valType:      typ,
+                        checkIsEmpty: checkIsEmpty,
+                }
+                return encoder
+        }
+        ptrType := reflect2.PtrTo(typ)
+        if ctx.prefix != "" && ptrType.Implements(marshalerType) {
+                checkIsEmpty := createCheckIsEmpty(ctx, ptrType)
+                var encoder ValEncoder = &marshalerEncoder{
+                        valType:      ptrType,
+                        checkIsEmpty: checkIsEmpty,
+                }
+                return &referenceEncoder{encoder}
+        }
+        if typ == textMarshalerType {
+                checkIsEmpty := createCheckIsEmpty(ctx, typ)
+                var encoder ValEncoder = &directTextMarshalerEncoder{
+                        checkIsEmpty:  checkIsEmpty,
+                        stringEncoder: ctx.EncoderOf(reflect2.TypeOf("")),
+                }
+                return encoder
+        }
+        if typ.Implements(textMarshalerType) {
+                checkIsEmpty := createCheckIsEmpty(ctx, typ)
+                var encoder ValEncoder = &textMarshalerEncoder{
+                        valType:       typ,
+                        stringEncoder: ctx.EncoderOf(reflect2.TypeOf("")),
+                        checkIsEmpty:  checkIsEmpty,
+                }
+                return encoder
+        }
+        // if prefix is empty, the type is the root type
+        if ctx.prefix != "" && ptrType.Implements(textMarshalerType) {
+                checkIsEmpty := createCheckIsEmpty(ctx, ptrType)
+                var encoder ValEncoder = &textMarshalerEncoder{
+                        valType:       ptrType,
+                        stringEncoder: ctx.EncoderOf(reflect2.TypeOf("")),
+                        checkIsEmpty:  checkIsEmpty,
+                }
+                return &referenceEncoder{encoder}
+        }
+        return nil
+}
+
+type marshalerEncoder struct {
+        checkIsEmpty checkIsEmpty
+        valType      reflect2.Type
+}
+
+func (encoder *marshalerEncoder) Encode(ptr unsafe.Pointer, stream *Stream) {
+        obj := encoder.valType.UnsafeIndirect(ptr)
+        if encoder.valType.IsNullable() && reflect2.IsNil(obj) {
+                stream.WriteNil()
+                return
+        }
+        marshaler := obj.(json.Marshaler)
+        bytes, err := marshaler.MarshalJSON()
+        if err != nil {
+                stream.Error = err
+        } else {
+                // html escape was already done by jsoniter
+                // but the extra '\n' should be trimed
+                l := len(bytes)
+                if l > 0 && bytes[l-1] == '\n' {
+                        bytes = bytes[:l-1]
+                }
+                stream.Write(bytes)
+        }
+}
+
+func (encoder *marshalerEncoder) IsEmpty(ptr unsafe.Pointer) bool {
+        return encoder.checkIsEmpty.IsEmpty(ptr)
+}
+
+type directMarshalerEncoder struct {
+        checkIsEmpty checkIsEmpty
+}
+
+func (encoder *directMarshalerEncoder) Encode(ptr unsafe.Pointer, stream *Stream) {
+        marshaler := *(*json.Marshaler)(ptr)
+        if marshaler == nil {
+                stream.WriteNil()
+                return
+        }
+        bytes, err := marshaler.MarshalJSON()
+        if err != nil {
+                stream.Error = err
+        } else {
+                stream.Write(bytes)
+        }
+}
+
+func (encoder *directMarshalerEncoder) IsEmpty(ptr unsafe.Pointer) bool {
+        return encoder.checkIsEmpty.IsEmpty(ptr)
+}
+
+type textMarshalerEncoder struct {
+        valType       reflect2.Type
+        stringEncoder ValEncoder
+        checkIsEmpty  checkIsEmpty
+}
+
+func (encoder *textMarshalerEncoder) Encode(ptr unsafe.Pointer, stream *Stream) {
+        obj := encoder.valType.UnsafeIndirect(ptr)
+        if encoder.valType.IsNullable() && reflect2.IsNil(obj) {
+                stream.WriteNil()
+                return
+        }
+        marshaler := (obj).(encoding.TextMarshaler)
+        bytes, err := marshaler.MarshalText()
+        if err != nil {
+                stream.Error = err
+        } else {
+                str := string(bytes)
+                encoder.stringEncoder.Encode(unsafe.Pointer(&str), stream)
+        }
+}
+
+func (encoder *textMarshalerEncoder) IsEmpty(ptr unsafe.Pointer) bool {
+        return encoder.checkIsEmpty.IsEmpty(ptr)
+}
+
+type directTextMarshalerEncoder struct {
+        stringEncoder ValEncoder
+        checkIsEmpty  checkIsEmpty
+}
+
+func (encoder *directTextMarshalerEncoder) Encode(ptr unsafe.Pointer, stream *Stream) {
+        marshaler := *(*encoding.TextMarshaler)(ptr)
+        if marshaler == nil {
+                stream.WriteNil()
+                return
+        }
+        bytes, err := marshaler.MarshalText()
+        if err != nil {
+                stream.Error = err
+        } else {
+                str := string(bytes)
+                encoder.stringEncoder.Encode(unsafe.Pointer(&str), stream)
+        }
+}
+
+func (encoder *directTextMarshalerEncoder) IsEmpty(ptr unsafe.Pointer) bool {
+        return encoder.checkIsEmpty.IsEmpty(ptr)
+}
+
+type unmarshalerDecoder struct {
+        valType reflect2.Type
+}
+
+func (decoder *unmarshalerDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) {
+        valType := decoder.valType
+        obj := valType.UnsafeIndirect(ptr)
+        unmarshaler := obj.(json.Unmarshaler)
+        iter.nextToken()
+        iter.unreadByte() // skip spaces
+        bytes := iter.SkipAndReturnBytes()
+        err := unmarshaler.UnmarshalJSON(bytes)
+        if err != nil {
+                iter.ReportError("unmarshalerDecoder", err.Error())
+        }
+}
+
+type textUnmarshalerDecoder struct {
+        valType reflect2.Type
+}
+
+func (decoder *textUnmarshalerDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) {
+        valType := decoder.valType
+        obj := valType.UnsafeIndirect(ptr)
+        if reflect2.IsNil(obj) {
+                ptrType := valType.(*reflect2.UnsafePtrType)
+                elemType := ptrType.Elem()
+                elem := elemType.UnsafeNew()
+                ptrType.UnsafeSet(ptr, unsafe.Pointer(&elem))
+                obj = valType.UnsafeIndirect(ptr)
+        }
+        unmarshaler := (obj).(encoding.TextUnmarshaler)
+        str := iter.ReadString()
+        err := unmarshaler.UnmarshalText([]byte(str))
+        if err != nil {
+                iter.ReportError("textUnmarshalerDecoder", err.Error())
+        }
+}
diff --git a/vendor/github.com/json-iterator/go/reflect_native.go b/vendor/github.com/json-iterator/go/reflect_native.go
new file mode 100644
index 0000000..f88722d
--- /dev/null
+++ b/vendor/github.com/json-iterator/go/reflect_native.go
@@ -0,0 +1,453 @@
+package jsoniter
+
+import (
+        "encoding/base64"
+        "reflect"
+        "strconv"
+        "unsafe"
+
+        "github.com/modern-go/reflect2"
+)
+
+const ptrSize = 32 << uintptr(^uintptr(0)>>63)
+
+func createEncoderOfNative(ctx *ctx, typ reflect2.Type) ValEncoder {
+        if typ.Kind() == reflect.Slice && typ.(reflect2.SliceType).Elem().Kind() == reflect.Uint8 {
+                sliceDecoder := decoderOfSlice(ctx, typ)
+                return &base64Codec{sliceDecoder: sliceDecoder}
+        }
+        typeName := typ.String()
+        kind := typ.Kind()
+        switch kind {
+        case reflect.String:
+                if typeName != "string" {
+                        return encoderOfType(ctx, reflect2.TypeOfPtr((*string)(nil)).Elem())
+                }
+                return &stringCodec{}
+        case reflect.Int:
+                if typeName != "int" {
+                        return encoderOfType(ctx, reflect2.TypeOfPtr((*int)(nil)).Elem())
+                }
+                if strconv.IntSize == 32 {
+                        return &int32Codec{}
+                }
+                return &int64Codec{}
+        case reflect.Int8:
+                if typeName != "int8" {
+                        return encoderOfType(ctx, reflect2.TypeOfPtr((*int8)(nil)).Elem())
+                }
+                return &int8Codec{}
+        case reflect.Int16:
+                if typeName != "int16" {
+                        return encoderOfType(ctx, reflect2.TypeOfPtr((*int16)(nil)).Elem())
+                }
+                return &int16Codec{}
+        case reflect.Int32:
+                if typeName != "int32" {
+                        return encoderOfType(ctx, reflect2.TypeOfPtr((*int32)(nil)).Elem())
+                }
+                return &int32Codec{}
+        case reflect.Int64:
+                if typeName != "int64" {
+                        return encoderOfType(ctx, reflect2.TypeOfPtr((*int64)(nil)).Elem())
+                }
+                return &int64Codec{}
+        case reflect.Uint:
+                if typeName != "uint" {
+                        return encoderOfType(ctx, reflect2.TypeOfPtr((*uint)(nil)).Elem())
+                }
+                if strconv.IntSize == 32 {
+                        return &uint32Codec{}
+                }
+                return &uint64Codec{}
+        case reflect.Uint8:
+                if typeName != "uint8" {
+                        return encoderOfType(ctx, reflect2.TypeOfPtr((*uint8)(nil)).Elem())
+                }
+                return &uint8Codec{}
+        case reflect.Uint16:
+                if typeName != "uint16" {
+                        return encoderOfType(ctx, reflect2.TypeOfPtr((*uint16)(nil)).Elem())
+                }
+                return &uint16Codec{}
+        case reflect.Uint32:
+                if typeName != "uint32" {
+                        return encoderOfType(ctx, reflect2.TypeOfPtr((*uint32)(nil)).Elem())
+                }
+                return &uint32Codec{}
+        case reflect.Uintptr:
+                if typeName != "uintptr" {
+                        return encoderOfType(ctx, reflect2.TypeOfPtr((*uintptr)(nil)).Elem())
+                }
+                if ptrSize == 32 {
+                        return &uint32Codec{}
+                }
+                return &uint64Codec{}
+        case reflect.Uint64:
+                if typeName != "uint64" {
+                        return encoderOfType(ctx, reflect2.TypeOfPtr((*uint64)(nil)).Elem())
+                }
+                return &uint64Codec{}
+        case reflect.Float32:
+                if typeName != "float32" {
+                        return encoderOfType(ctx, reflect2.TypeOfPtr((*float32)(nil)).Elem())
+                }
+                return &float32Codec{}
+        case reflect.Float64:
+                if typeName != "float64" {
+                        return encoderOfType(ctx, reflect2.TypeOfPtr((*float64)(nil)).Elem())
+                }
+                return &float64Codec{}
+        case reflect.Bool:
+                if typeName != "bool" {
+                        return encoderOfType(ctx, reflect2.TypeOfPtr((*bool)(nil)).Elem())
+                }
+                return &boolCodec{}
+        }
+        return nil
+}
+
+func createDecoderOfNative(ctx *ctx, typ reflect2.Type) ValDecoder {
+        if typ.Kind() == reflect.Slice && typ.(reflect2.SliceType).Elem().Kind() == reflect.Uint8 {
+                sliceDecoder := decoderOfSlice(ctx, typ)
+                return &base64Codec{sliceDecoder: sliceDecoder}
+        }
+        typeName := typ.String()
+        switch typ.Kind() {
+        case reflect.String:
+                if typeName != "string" {
+                        return decoderOfType(ctx, reflect2.TypeOfPtr((*string)(nil)).Elem())
+                }
+                return &stringCodec{}
+        case reflect.Int:
+                if typeName != "int" {
+                        return decoderOfType(ctx, reflect2.TypeOfPtr((*int)(nil)).Elem())
+                }
+                if strconv.IntSize == 32 {
+                        return &int32Codec{}
+                }
+                return &int64Codec{}
+        case reflect.Int8:
+                if typeName != "int8" {
+                        return decoderOfType(ctx, reflect2.TypeOfPtr((*int8)(nil)).Elem())
+                }
+                return &int8Codec{}
+        case reflect.Int16:
+                if typeName != "int16" {
+                        return decoderOfType(ctx, reflect2.TypeOfPtr((*int16)(nil)).Elem())
+                }
+                return &int16Codec{}
+        case reflect.Int32:
+                if typeName != "int32" {
+                        return decoderOfType(ctx, reflect2.TypeOfPtr((*int32)(nil)).Elem())
+                }
+                return &int32Codec{}
+        case reflect.Int64:
+                if typeName != "int64" {
+                        return decoderOfType(ctx, reflect2.TypeOfPtr((*int64)(nil)).Elem())
+                }
+                return &int64Codec{}
+        case reflect.Uint:
+                if typeName != "uint" {
+                        return decoderOfType(ctx, reflect2.TypeOfPtr((*uint)(nil)).Elem())
+                }
+                if strconv.IntSize == 32 {
+                        return &uint32Codec{}
+                }
+                return &uint64Codec{}
+        case reflect.Uint8:
+                if typeName != "uint8" {
+                        return decoderOfType(ctx, reflect2.TypeOfPtr((*uint8)(nil)).Elem())
+                }
+                return &uint8Codec{}
+        case reflect.Uint16:
+                if typeName != "uint16" {
+                        return decoderOfType(ctx, reflect2.TypeOfPtr((*uint16)(nil)).Elem())
+                }
+                return &uint16Codec{}
+        case reflect.Uint32:
+                if typeName != "uint32" {
+                        return decoderOfType(ctx, reflect2.TypeOfPtr((*uint32)(nil)).Elem())
+                }
+                return &uint32Codec{}
+        case reflect.Uintptr:
+                if typeName != "uintptr" {
+                        return decoderOfType(ctx, reflect2.TypeOfPtr((*uintptr)(nil)).Elem())
+                }
+                if ptrSize == 32 {
+                        return &uint32Codec{}
+                }
+                return &uint64Codec{}
+        case reflect.Uint64:
+                if typeName != "uint64" {
+                        return decoderOfType(ctx, reflect2.TypeOfPtr((*uint64)(nil)).Elem())
+                }
+                return &uint64Codec{}
+        case reflect.Float32:
+                if typeName != "float32" {
+                        return decoderOfType(ctx, reflect2.TypeOfPtr((*float32)(nil)).Elem())
+                }
+                return &float32Codec{}
+        case reflect.Float64:
+                if typeName != "float64" {
+                        return decoderOfType(ctx, reflect2.TypeOfPtr((*float64)(nil)).Elem())
+                }
+                return &float64Codec{}
+        case reflect.Bool:
+                if typeName != "bool" {
+                        return decoderOfType(ctx, reflect2.TypeOfPtr((*bool)(nil)).Elem())
+                }
+                return &boolCodec{}
+        }
+        return nil
+}
+
+type stringCodec struct {
+}
+
+func (codec *stringCodec) Decode(ptr unsafe.Pointer, iter *Iterator) {
+        *((*string)(ptr)) = iter.ReadString()
+}
+
+func (codec *stringCodec) Encode(ptr unsafe.Pointer, stream *Stream) {
+        str := *((*string)(ptr))
+        stream.WriteString(str)
+}
+
+func (codec *stringCodec) IsEmpty(ptr unsafe.Pointer) bool {
+        return *((*string)(ptr)) == ""
+}
+
+type int8Codec struct {
+}
+
+func (codec *int8Codec) Decode(ptr unsafe.Pointer, iter *Iterator) {
+        if !iter.ReadNil() {
+                *((*int8)(ptr)) = iter.ReadInt8()
+        }
+}
+
+func (codec *int8Codec) Encode(ptr unsafe.Pointer, stream *Stream) {
+        stream.WriteInt8(*((*int8)(ptr)))
+}
+
+func (codec *int8Codec) IsEmpty(ptr unsafe.Pointer) bool {
+        return *((*int8)(ptr)) == 0
+}
+
+type int16Codec struct {
+}
+
+func (codec *int16Codec) Decode(ptr unsafe.Pointer, iter *Iterator) {
+        if !iter.ReadNil() {
+                *((*int16)(ptr)) = iter.ReadInt16()
+        }
+}
+
+func (codec *int16Codec) Encode(ptr unsafe.Pointer, stream *Stream) {
+        stream.WriteInt16(*((*int16)(ptr)))
+}
+
+func (codec *int16Codec) IsEmpty(ptr unsafe.Pointer) bool {
+        return *((*int16)(ptr)) == 0
+}
+
+type int32Codec struct {
+}
+
+func (codec *int32Codec) Decode(ptr unsafe.Pointer, iter *Iterator) {
+        if !iter.ReadNil() {
+                *((*int32)(ptr)) = iter.ReadInt32()
+        }
+}
+
+func (codec *int32Codec) Encode(ptr unsafe.Pointer, stream *Stream) {
+        stream.WriteInt32(*((*int32)(ptr)))
+}
+
+func (codec *int32Codec) IsEmpty(ptr unsafe.Pointer) bool {
+        return *((*int32)(ptr)) == 0
+}
+
+type int64Codec struct {
+}
+
+func (codec *int64Codec) Decode(ptr unsafe.Pointer, iter *Iterator) {
+        if !iter.ReadNil() {
+                *((*int64)(ptr)) = iter.ReadInt64()
+        }
+}
+
+func (codec *int64Codec) Encode(ptr unsafe.Pointer, stream *Stream) {
+        stream.WriteInt64(*((*int64)(ptr)))
+}
+
+func (codec *int64Codec) IsEmpty(ptr unsafe.Pointer) bool {
+        return *((*int64)(ptr)) == 0
+}
+
+type uint8Codec struct {
+}
+
+func (codec *uint8Codec) Decode(ptr unsafe.Pointer, iter *Iterator) {
+        if !iter.ReadNil() {
+                *((*uint8)(ptr)) = iter.ReadUint8()
+        }
+}
+
+func (codec *uint8Codec) Encode(ptr unsafe.Pointer, stream *Stream) {
+        stream.WriteUint8(*((*uint8)(ptr)))
+}
+
+func (codec *uint8Codec) IsEmpty(ptr unsafe.Pointer) bool {
+        return *((*uint8)(ptr)) == 0
+}
+
+type uint16Codec struct {
+}
+
+func (codec *uint16Codec) Decode(ptr unsafe.Pointer, iter *Iterator) {
+        if !iter.ReadNil() {
+                *((*uint16)(ptr)) = iter.ReadUint16()
+        }
+}
+
+func (codec *uint16Codec) Encode(ptr unsafe.Pointer, stream *Stream) {
+        stream.WriteUint16(*((*uint16)(ptr)))
+}
+
+func (codec *uint16Codec) IsEmpty(ptr unsafe.Pointer) bool {
+        return *((*uint16)(ptr)) == 0
+}
+
+type uint32Codec struct {
+}
+
+func (codec *uint32Codec) Decode(ptr unsafe.Pointer, iter *Iterator) {
+        if !iter.ReadNil() {
+                *((*uint32)(ptr)) = iter.ReadUint32()
+        }
+}
+
+func (codec *uint32Codec) Encode(ptr unsafe.Pointer, stream *Stream) {
+        stream.WriteUint32(*((*uint32)(ptr)))
+}
+
+func (codec *uint32Codec) IsEmpty(ptr unsafe.Pointer) bool {
+        return *((*uint32)(ptr)) == 0
+}
+
+type uint64Codec struct {
+}
+
+func (codec *uint64Codec) Decode(ptr unsafe.Pointer, iter *Iterator) {
+        if !iter.ReadNil() {
+                *((*uint64)(ptr)) = iter.ReadUint64()
+        }
+}
+
+func (codec *uint64Codec) Encode(ptr unsafe.Pointer, stream *Stream) {
+        stream.WriteUint64(*((*uint64)(ptr)))
+}
+
+func (codec *uint64Codec) IsEmpty(ptr unsafe.Pointer) bool {
+        return *((*uint64)(ptr)) == 0
+}
+
+type float32Codec struct {
+}
+
+func (codec *float32Codec) Decode(ptr unsafe.Pointer, iter *Iterator) {
+        if !iter.ReadNil() {
+                *((*float32)(ptr)) = iter.ReadFloat32()
+        }
+}
+
+func (codec *float32Codec) Encode(ptr unsafe.Pointer, stream *Stream) {
+        stream.WriteFloat32(*((*float32)(ptr)))
+}
+
+func (codec *float32Codec) IsEmpty(ptr unsafe.Pointer) bool {
+        return *((*float32)(ptr)) == 0
+}
+
+type float64Codec struct {
+}
+
+func (codec *float64Codec) Decode(ptr unsafe.Pointer, iter *Iterator) {
+        if !iter.ReadNil() {
+                *((*float64)(ptr)) = iter.ReadFloat64()
+        }
+}
+
+func (codec *float64Codec) Encode(ptr unsafe.Pointer, stream *Stream) {
+        stream.WriteFloat64(*((*float64)(ptr)))
+}
+
+func (codec *float64Codec) IsEmpty(ptr unsafe.Pointer) bool {
+        return *((*float64)(ptr)) == 0
+}
+
+type boolCodec struct {
+}
+
+func (codec *boolCodec) Decode(ptr unsafe.Pointer, iter *Iterator) {
+        if !iter.ReadNil() {
+                *((*bool)(ptr)) = iter.ReadBool()
+        }
+}
+
+func (codec *boolCodec) Encode(ptr unsafe.Pointer, stream *Stream) {
+        stream.WriteBool(*((*bool)(ptr)))
+}
+
+func (codec *boolCodec) IsEmpty(ptr unsafe.Pointer) bool {
+        return !(*((*bool)(ptr)))
+}
+
+type base64Codec struct {
+        sliceType    *reflect2.UnsafeSliceType
+        sliceDecoder ValDecoder
+}
+
+func (codec *base64Codec) Decode(ptr unsafe.Pointer, iter *Iterator) {
+        if iter.ReadNil() {
+                codec.sliceType.UnsafeSetNil(ptr)
+                return
+        }
+        switch iter.WhatIsNext() {
+        case StringValue:
+                src := iter.ReadString()
+                dst, err := base64.StdEncoding.DecodeString(src)
+                if err != nil {
+                        iter.ReportError("decode base64", err.Error())
+                } else {
+                        codec.sliceType.UnsafeSet(ptr, unsafe.Pointer(&dst))
+                }
+        case ArrayValue:
+                codec.sliceDecoder.Decode(ptr, iter)
+        default:
+                iter.ReportError("base64Codec", "invalid input")
+        }
+}
+
+func (codec *base64Codec) Encode(ptr unsafe.Pointer, stream *Stream) {
+        if codec.sliceType.UnsafeIsNil(ptr) {
+                stream.WriteNil()
+                return
+        }
+        src := *((*[]byte)(ptr))
+        encoding := base64.StdEncoding
+        stream.writeByte('"')
+        if len(src) != 0 {
+                size := encoding.EncodedLen(len(src))
+                buf := make([]byte, size)
+                encoding.Encode(buf, src)
+                stream.buf = append(stream.buf, buf...)
+        }
+        stream.writeByte('"')
+}
+
+func (codec *base64Codec) IsEmpty(ptr unsafe.Pointer) bool {
+        return len(*((*[]byte)(ptr))) == 0
+}
diff --git a/vendor/github.com/json-iterator/go/reflect_optional.go b/vendor/github.com/json-iterator/go/reflect_optional.go
new file mode 100644
index 0000000..fa71f47
--- /dev/null
+++ b/vendor/github.com/json-iterator/go/reflect_optional.go
@@ -0,0 +1,129 @@
+package jsoniter
+
+import (
+        "github.com/modern-go/reflect2"
+        "unsafe"
+)
+
+func decoderOfOptional(ctx *ctx, typ reflect2.Type) ValDecoder {
+        ptrType := typ.(*reflect2.UnsafePtrType)
+        elemType := ptrType.Elem()
+        decoder := decoderOfType(ctx, elemType)
+        return &OptionalDecoder{elemType, decoder}
+}
+
+func encoderOfOptional(ctx *ctx, typ reflect2.Type) ValEncoder {
+        ptrType := typ.(*reflect2.UnsafePtrType)
+        elemType := ptrType.Elem()
+        elemEncoder := encoderOfType(ctx, elemType)
+        encoder := &OptionalEncoder{elemEncoder}
+        return encoder
+}
+
+type OptionalDecoder struct {
+        ValueType    reflect2.Type
+        ValueDecoder ValDecoder
+}
+
+func (decoder *OptionalDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) {
+        if iter.ReadNil() {
+                *((*unsafe.Pointer)(ptr)) = nil
+        } else {
+                if *((*unsafe.Pointer)(ptr)) == nil {
+                        //pointer to null, we have to allocate memory to hold the value
+                        newPtr := decoder.ValueType.UnsafeNew()
+                        decoder.ValueDecoder.Decode(newPtr, iter)
+                        *((*unsafe.Pointer)(ptr)) = newPtr
+                } else {
+                        //reuse existing instance
+                        decoder.ValueDecoder.Decode(*((*unsafe.Pointer)(ptr)), iter)
+                }
+        }
+}
+
+type dereferenceDecoder struct {
+        // only to deference a pointer
+        valueType    reflect2.Type
+        valueDecoder ValDecoder
+}
+
+func (decoder *dereferenceDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) {
+        if *((*unsafe.Pointer)(ptr)) == nil {
+                //pointer to null, we have to allocate memory to hold the value
+                newPtr := decoder.valueType.UnsafeNew()
+                decoder.valueDecoder.Decode(newPtr, iter)
+                *((*unsafe.Pointer)(ptr)) = newPtr
+        } else {
+                //reuse existing instance
+                decoder.valueDecoder.Decode(*((*unsafe.Pointer)(ptr)), iter)
+        }
+}
+
+type OptionalEncoder struct {
+        ValueEncoder ValEncoder
+}
+
+func (encoder *OptionalEncoder) Encode(ptr unsafe.Pointer, stream *Stream) {
+        if *((*unsafe.Pointer)(ptr)) == nil {
+                stream.WriteNil()
+        } else {
+                encoder.ValueEncoder.Encode(*((*unsafe.Pointer)(ptr)), stream)
+        }
+}
+
+func (encoder *OptionalEncoder) IsEmpty(ptr unsafe.Pointer) bool {
+        return *((*unsafe.Pointer)(ptr)) == nil
+}
+
+type dereferenceEncoder struct {
+        ValueEncoder ValEncoder
+}
+
+func (encoder *dereferenceEncoder) Encode(ptr unsafe.Pointer, stream *Stream) {
+        if *((*unsafe.Pointer)(ptr)) == nil {
+                stream.WriteNil()
+        } else {
+                encoder.ValueEncoder.Encode(*((*unsafe.Pointer)(ptr)), stream)
+        }
+}
+
+func (encoder *dereferenceEncoder) IsEmpty(ptr unsafe.Pointer) bool {
+        dePtr := *((*unsafe.Pointer)(ptr))
+        if dePtr == nil {
+                return true
+        }
+        return encoder.ValueEncoder.IsEmpty(dePtr)
+}
+
+func (encoder *dereferenceEncoder) IsEmbeddedPtrNil(ptr unsafe.Pointer) bool {
+        deReferenced := *((*unsafe.Pointer)(ptr))
+        if deReferenced == nil {
+                return true
+        }
+        isEmbeddedPtrNil, converted := encoder.ValueEncoder.(IsEmbeddedPtrNil)
+        if !converted {
+                return false
+        }
+        fieldPtr := unsafe.Pointer(deReferenced)
+        return isEmbeddedPtrNil.IsEmbeddedPtrNil(fieldPtr)
+}
+
+type referenceEncoder struct {
+        encoder ValEncoder
+}
+
+func (encoder *referenceEncoder) Encode(ptr unsafe.Pointer, stream *Stream) {
+        encoder.encoder.Encode(unsafe.Pointer(&ptr), stream)
+}
+
+func (encoder *referenceEncoder) IsEmpty(ptr unsafe.Pointer) bool {
+        return encoder.encoder.IsEmpty(unsafe.Pointer(&ptr))
+}
+
+type referenceDecoder struct {
+        decoder ValDecoder
+}
+
+func (decoder *referenceDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) {
+        decoder.decoder.Decode(unsafe.Pointer(&ptr), iter)
+}
diff --git a/vendor/github.com/json-iterator/go/reflect_slice.go b/vendor/github.com/json-iterator/go/reflect_slice.go
new file mode 100644
index 0000000..9441d79
--- /dev/null
+++ b/vendor/github.com/json-iterator/go/reflect_slice.go
@@ -0,0 +1,99 @@
+package jsoniter
+
+import (
+        "fmt"
+        "github.com/modern-go/reflect2"
+        "io"
+        "unsafe"
+)
+
+func decoderOfSlice(ctx *ctx, typ reflect2.Type) ValDecoder {
+        sliceType := typ.(*reflect2.UnsafeSliceType)
+        decoder := decoderOfType(ctx.append("[sliceElem]"), sliceType.Elem())
+        return &sliceDecoder{sliceType, decoder}
+}
+
+func encoderOfSlice(ctx *ctx, typ reflect2.Type) ValEncoder {
+        sliceType := typ.(*reflect2.UnsafeSliceType)
+        encoder := encoderOfType(ctx.append("[sliceElem]"), sliceType.Elem())
+        return &sliceEncoder{sliceType, encoder}
+}
+
+type sliceEncoder struct {
+        sliceType   *reflect2.UnsafeSliceType
+        elemEncoder ValEncoder
+}
+
+func (encoder *sliceEncoder) Encode(ptr unsafe.Pointer, stream *Stream) {
+        if encoder.sliceType.UnsafeIsNil(ptr) {
+                stream.WriteNil()
+                return
+        }
+        length := encoder.sliceType.UnsafeLengthOf(ptr)
+        if length == 0 {
+                stream.WriteEmptyArray()
+                return
+        }
+        stream.WriteArrayStart()
+        encoder.elemEncoder.Encode(encoder.sliceType.UnsafeGetIndex(ptr, 0), stream)
+        for i := 1; i < length; i++ {
+                stream.WriteMore()
+                elemPtr := encoder.sliceType.UnsafeGetIndex(ptr, i)
+                encoder.elemEncoder.Encode(elemPtr, stream)
+        }
+        stream.WriteArrayEnd()
+        if stream.Error != nil && stream.Error != io.EOF {
+                stream.Error = fmt.Errorf("%v: %s", encoder.sliceType, stream.Error.Error())
+        }
+}
+
+func (encoder *sliceEncoder) IsEmpty(ptr unsafe.Pointer) bool {
+        return encoder.sliceType.UnsafeLengthOf(ptr) == 0
+}
+
+type sliceDecoder struct {
+        sliceType   *reflect2.UnsafeSliceType
+        elemDecoder ValDecoder
+}
+
+func (decoder *sliceDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) {
+        decoder.doDecode(ptr, iter)
+        if iter.Error != nil && iter.Error != io.EOF {
+                iter.Error = fmt.Errorf("%v: %s", decoder.sliceType, iter.Error.Error())
+        }
+}
+
+func (decoder *sliceDecoder) doDecode(ptr unsafe.Pointer, iter *Iterator) {
+        c := iter.nextToken()
+        sliceType := decoder.sliceType
+        if c == 'n' {
+                iter.skipThreeBytes('u', 'l', 'l')
+                sliceType.UnsafeSetNil(ptr)
+                return
+        }
+        if c != '[' {
+                iter.ReportError("decode slice", "expect [ or n, but found "+string([]byte{c}))
+                return
+        }
+        c = iter.nextToken()
+        if c == ']' {
+                sliceType.UnsafeSet(ptr, sliceType.UnsafeMakeSlice(0, 0))
+                return
+        }
+        iter.unreadByte()
+        sliceType.UnsafeGrow(ptr, 1)
+        elemPtr := sliceType.UnsafeGetIndex(ptr, 0)
+        decoder.elemDecoder.Decode(elemPtr, iter)
+        length := 1
+        for c = iter.nextToken(); c == ','; c = iter.nextToken() {
+                idx := length
+                length += 1
+                sliceType.UnsafeGrow(ptr, length)
+                elemPtr = sliceType.UnsafeGetIndex(ptr, idx)
+                decoder.elemDecoder.Decode(elemPtr, iter)
+        }
+        if c != ']' {
+                iter.ReportError("decode slice", "expect ], but found "+string([]byte{c}))
+                return
+        }
+}
diff --git a/vendor/github.com/json-iterator/go/reflect_struct_decoder.go b/vendor/github.com/json-iterator/go/reflect_struct_decoder.go
new file mode 100644
index 0000000..92ae912
--- /dev/null
+++ b/vendor/github.com/json-iterator/go/reflect_struct_decoder.go
@@ -0,0 +1,1097 @@
+package jsoniter
+
+import (
+        "fmt"
+        "io"
+        "strings"
+        "unsafe"
+
+        "github.com/modern-go/reflect2"
+)
+
+func decoderOfStruct(ctx *ctx, typ reflect2.Type) ValDecoder {
+        bindings := map[string]*Binding{}
+        structDescriptor := describeStruct(ctx, typ)
+        for _, binding := range structDescriptor.Fields {
+                for _, fromName := range binding.FromNames {
+                        old := bindings[fromName]
+                        if old == nil {
+                                bindings[fromName] = binding
+                                continue
+                        }
+                        ignoreOld, ignoreNew := resolveConflictBinding(ctx.frozenConfig, old, binding)
+                        if ignoreOld {
+                                delete(bindings, fromName)
+                        }
+                        if !ignoreNew {
+                                bindings[fromName] = binding
+                        }
+                }
+        }
+        fields := map[string]*structFieldDecoder{}
+        for k, binding := range bindings {
+                fields[k] = binding.Decoder.(*structFieldDecoder)
+        }
+
+        if !ctx.caseSensitive() {
+                for k, binding := range bindings {
+                        if _, found := fields[strings.ToLower(k)]; !found {
+                                fields[strings.ToLower(k)] = binding.Decoder.(*structFieldDecoder)
+                        }
+                }
+        }
+
+        return createStructDecoder(ctx, typ, fields)
+}
+
+func createStructDecoder(ctx *ctx, typ reflect2.Type, fields map[string]*structFieldDecoder) ValDecoder {
+        if ctx.disallowUnknownFields {
+                return &generalStructDecoder{typ: typ, fields: fields, disallowUnknownFields: true}
+        }
+        knownHash := map[int64]struct{}{
+                0: {},
+        }
+
+        switch len(fields) {
+        case 0:
+                return &skipObjectDecoder{typ}
+        case 1:
+                for fieldName, fieldDecoder := range fields {
+                        fieldHash := calcHash(fieldName, ctx.caseSensitive())
+                        _, known := knownHash[fieldHash]
+                        if known {
+                                return &generalStructDecoder{typ, fields, false}
+                        }
+                        knownHash[fieldHash] = struct{}{}
+                        return &oneFieldStructDecoder{typ, fieldHash, fieldDecoder}
+                }
+        case 2:
+                var fieldHash1 int64
+                var fieldHash2 int64
+                var fieldDecoder1 *structFieldDecoder
+                var fieldDecoder2 *structFieldDecoder
+                for fieldName, fieldDecoder := range fields {
+                        fieldHash := calcHash(fieldName, ctx.caseSensitive())
+                        _, known := knownHash[fieldHash]
+                        if known {
+                                return &generalStructDecoder{typ, fields, false}
+                        }
+                        knownHash[fieldHash] = struct{}{}
+                        if fieldHash1 == 0 {
+                                fieldHash1 = fieldHash
+                                fieldDecoder1 = fieldDecoder
+                        } else {
+                                fieldHash2 = fieldHash
+                                fieldDecoder2 = fieldDecoder
+                        }
+                }
+                return &twoFieldsStructDecoder{typ, fieldHash1, fieldDecoder1, fieldHash2, fieldDecoder2}
+        case 3:
+                var fieldName1 int64
+                var fieldName2 int64
+                var fieldName3 int64
+                var fieldDecoder1 *structFieldDecoder
+                var fieldDecoder2 *structFieldDecoder
+                var fieldDecoder3 *structFieldDecoder
+                for fieldName, fieldDecoder := range fields {
+                        fieldHash := calcHash(fieldName, ctx.caseSensitive())
+                        _, known := knownHash[fieldHash]
+                        if known {
+                                return &generalStructDecoder{typ, fields, false}
+                        }
+                        knownHash[fieldHash] = struct{}{}
+                        if fieldName1 == 0 {
+                                fieldName1 = fieldHash
+                                fieldDecoder1 = fieldDecoder
+                        } else if fieldName2 == 0 {
+                                fieldName2 = fieldHash
+                                fieldDecoder2 = fieldDecoder
+                        } else {
+                                fieldName3 = fieldHash
+                                fieldDecoder3 = fieldDecoder
+                        }
+                }
+                return &threeFieldsStructDecoder{typ,
+                        fieldName1, fieldDecoder1,
+                        fieldName2, fieldDecoder2,
+                        fieldName3, fieldDecoder3}
+        case 4:
+                var fieldName1 int64
+                var fieldName2 int64
+                var fieldName3 int64
+                var fieldName4 int64
+                var fieldDecoder1 *structFieldDecoder
+                var fieldDecoder2 *structFieldDecoder
+                var fieldDecoder3 *structFieldDecoder
+                var fieldDecoder4 *structFieldDecoder
+                for fieldName, fieldDecoder := range fields {
+                        fieldHash := calcHash(fieldName, ctx.caseSensitive())
+                        _, known := knownHash[fieldHash]
+                        if known {
+                                return &generalStructDecoder{typ, fields, false}
+                        }
+                        knownHash[fieldHash] = struct{}{}
+                        if fieldName1 == 0 {
+                                fieldName1 = fieldHash
+                                fieldDecoder1 = fieldDecoder
+                        } else if fieldName2 == 0 {
+                                fieldName2 = fieldHash
+                                fieldDecoder2 = fieldDecoder
+                        } else if fieldName3 == 0 {
+                                fieldName3 = fieldHash
+                                fieldDecoder3 = fieldDecoder
+                        } else {
+                                fieldName4 = fieldHash
+                                fieldDecoder4 = fieldDecoder
+                        }
+                }
+                return &fourFieldsStructDecoder{typ,
+                        fieldName1, fieldDecoder1,
+                        fieldName2, fieldDecoder2,
+                        fieldName3, fieldDecoder3,
+                        fieldName4, fieldDecoder4}
+        case 5:
+                var fieldName1 int64
+                var fieldName2 int64
+                var fieldName3 int64
+                var fieldName4 int64
+                var fieldName5 int64
+                var fieldDecoder1 *structFieldDecoder
+                var fieldDecoder2 *structFieldDecoder
+                var fieldDecoder3 *structFieldDecoder
+                var fieldDecoder4 *structFieldDecoder
+                var fieldDecoder5 *structFieldDecoder
+                for fieldName, fieldDecoder := range fields {
+                        fieldHash := calcHash(fieldName, ctx.caseSensitive())
+                        _, known := knownHash[fieldHash]
+                        if known {
+                                return &generalStructDecoder{typ, fields, false}
+                        }
+                        knownHash[fieldHash] = struct{}{}
+                        if fieldName1 == 0 {
+                                fieldName1 = fieldHash
+                                fieldDecoder1 = fieldDecoder
+                        } else if fieldName2 == 0 {
+                                fieldName2 = fieldHash
+                                fieldDecoder2 = fieldDecoder
+                        } else if fieldName3 == 0 {
+                                fieldName3 = fieldHash
+                                fieldDecoder3 = fieldDecoder
+                        } else if fieldName4 == 0 {
+                                fieldName4 = fieldHash
+                                fieldDecoder4 = fieldDecoder
+                        } else {
+                                fieldName5 = fieldHash
+                                fieldDecoder5 = fieldDecoder
+                        }
+                }
+                return &fiveFieldsStructDecoder{typ,
+                        fieldName1, fieldDecoder1,
+                        fieldName2, fieldDecoder2,
+                        fieldName3, fieldDecoder3,
+                        fieldName4, fieldDecoder4,
+                        fieldName5, fieldDecoder5}
+        case 6:
+                var fieldName1 int64
+                var fieldName2 int64
+                var fieldName3 int64
+                var fieldName4 int64
+                var fieldName5 int64
+                var fieldName6 int64
+                var fieldDecoder1 *structFieldDecoder
+                var fieldDecoder2 *structFieldDecoder
+                var fieldDecoder3 *structFieldDecoder
+                var fieldDecoder4 *structFieldDecoder
+                var fieldDecoder5 *structFieldDecoder
+                var fieldDecoder6 *structFieldDecoder
+                for fieldName, fieldDecoder := range fields {
+                        fieldHash := calcHash(fieldName, ctx.caseSensitive())
+                        _, known := knownHash[fieldHash]
+                        if known {
+                                return &generalStructDecoder{typ, fields, false}
+                        }
+                        knownHash[fieldHash] = struct{}{}
+                        if fieldName1 == 0 {
+                                fieldName1 = fieldHash
+                                fieldDecoder1 = fieldDecoder
+                        } else if fieldName2 == 0 {
+                                fieldName2 = fieldHash
+                                fieldDecoder2 = fieldDecoder
+                        } else if fieldName3 == 0 {
+                                fieldName3 = fieldHash
+                                fieldDecoder3 = fieldDecoder
+                        } else if fieldName4 == 0 {
+                                fieldName4 = fieldHash
+                                fieldDecoder4 = fieldDecoder
+                        } else if fieldName5 == 0 {
+                                fieldName5 = fieldHash
+                                fieldDecoder5 = fieldDecoder
+                        } else {
+                                fieldName6 = fieldHash
+                                fieldDecoder6 = fieldDecoder
+                        }
+                }
+                return &sixFieldsStructDecoder{typ,
+                        fieldName1, fieldDecoder1,
+                        fieldName2, fieldDecoder2,
+                        fieldName3, fieldDecoder3,
+                        fieldName4, fieldDecoder4,
+                        fieldName5, fieldDecoder5,
+                        fieldName6, fieldDecoder6}
+        case 7:
+                var fieldName1 int64
+                var fieldName2 int64
+                var fieldName3 int64
+                var fieldName4 int64
+                var fieldName5 int64
+                var fieldName6 int64
+                var fieldName7 int64
+                var fieldDecoder1 *structFieldDecoder
+                var fieldDecoder2 *structFieldDecoder
+                var fieldDecoder3 *structFieldDecoder
+                var fieldDecoder4 *structFieldDecoder
+                var fieldDecoder5 *structFieldDecoder
+                var fieldDecoder6 *structFieldDecoder
+                var fieldDecoder7 *structFieldDecoder
+                for fieldName, fieldDecoder := range fields {
+                        fieldHash := calcHash(fieldName, ctx.caseSensitive())
+                        _, known := knownHash[fieldHash]
+                        if known {
+                                return &generalStructDecoder{typ, fields, false}
+                        }
+                        knownHash[fieldHash] = struct{}{}
+                        if fieldName1 == 0 {
+                                fieldName1 = fieldHash
+                                fieldDecoder1 = fieldDecoder
+                        } else if fieldName2 == 0 {
+                                fieldName2 = fieldHash
+                                fieldDecoder2 = fieldDecoder
+                        } else if fieldName3 == 0 {
+                                fieldName3 = fieldHash
+                                fieldDecoder3 = fieldDecoder
+                        } else if fieldName4 == 0 {
+                                fieldName4 = fieldHash
+                                fieldDecoder4 = fieldDecoder
+                        } else if fieldName5 == 0 {
+                                fieldName5 = fieldHash
+                                fieldDecoder5 = fieldDecoder
+                        } else if fieldName6 == 0 {
+                                fieldName6 = fieldHash
+                                fieldDecoder6 = fieldDecoder
+                        } else {
+                                fieldName7 = fieldHash
+                                fieldDecoder7 = fieldDecoder
+                        }
+                }
+                return &sevenFieldsStructDecoder{typ,
+                        fieldName1, fieldDecoder1,
+                        fieldName2, fieldDecoder2,
+                        fieldName3, fieldDecoder3,
+                        fieldName4, fieldDecoder4,
+                        fieldName5, fieldDecoder5,
+                        fieldName6, fieldDecoder6,
+                        fieldName7, fieldDecoder7}
+        case 8:
+                var fieldName1 int64
+                var fieldName2 int64
+                var fieldName3 int64
+                var fieldName4 int64
+                var fieldName5 int64
+                var fieldName6 int64
+                var fieldName7 int64
+                var fieldName8 int64
+                var fieldDecoder1 *structFieldDecoder
+                var fieldDecoder2 *structFieldDecoder
+                var fieldDecoder3 *structFieldDecoder
+                var fieldDecoder4 *structFieldDecoder
+                var fieldDecoder5 *structFieldDecoder
+                var fieldDecoder6 *structFieldDecoder
+                var fieldDecoder7 *structFieldDecoder
+                var fieldDecoder8 *structFieldDecoder
+                for fieldName, fieldDecoder := range fields {
+                        fieldHash := calcHash(fieldName, ctx.caseSensitive())
+                        _, known := knownHash[fieldHash]
+                        if known {
+                                return &generalStructDecoder{typ, fields, false}
+                        }
+                        knownHash[fieldHash] = struct{}{}
+                        if fieldName1 == 0 {
+                                fieldName1 = fieldHash
+                                fieldDecoder1 = fieldDecoder
+                        } else if fieldName2 == 0 {
+                                fieldName2 = fieldHash
+                                fieldDecoder2 = fieldDecoder
+                        } else if fieldName3 == 0 {
+                                fieldName3 = fieldHash
+                                fieldDecoder3 = fieldDecoder
+                        } else if fieldName4 == 0 {
+                                fieldName4 = fieldHash
+                                fieldDecoder4 = fieldDecoder
+                        } else if fieldName5 == 0 {
+                                fieldName5 = fieldHash
+                                fieldDecoder5 = fieldDecoder
+                        } else if fieldName6 == 0 {
+                                fieldName6 = fieldHash
+                                fieldDecoder6 = fieldDecoder
+                        } else if fieldName7 == 0 {
+                                fieldName7 = fieldHash
+                                fieldDecoder7 = fieldDecoder
+                        } else {
+                                fieldName8 = fieldHash
+                                fieldDecoder8 = fieldDecoder
+                        }
+                }
+                return &eightFieldsStructDecoder{typ,
+                        fieldName1, fieldDecoder1,
+                        fieldName2, fieldDecoder2,
+                        fieldName3, fieldDecoder3,
+                        fieldName4, fieldDecoder4,
+                        fieldName5, fieldDecoder5,
+                        fieldName6, fieldDecoder6,
+                        fieldName7, fieldDecoder7,
+                        fieldName8, fieldDecoder8}
+        case 9:
+                var fieldName1 int64
+                var fieldName2 int64
+                var fieldName3 int64
+                var fieldName4 int64
+                var fieldName5 int64
+                var fieldName6 int64
+                var fieldName7 int64
+                var fieldName8 int64
+                var fieldName9 int64
+                var fieldDecoder1 *structFieldDecoder
+                var fieldDecoder2 *structFieldDecoder
+                var fieldDecoder3 *structFieldDecoder
+                var fieldDecoder4 *structFieldDecoder
+                var fieldDecoder5 *structFieldDecoder
+                var fieldDecoder6 *structFieldDecoder
+                var fieldDecoder7 *structFieldDecoder
+                var fieldDecoder8 *structFieldDecoder
+                var fieldDecoder9 *structFieldDecoder
+                for fieldName, fieldDecoder := range fields {
+                        fieldHash := calcHash(fieldName, ctx.caseSensitive())
+                        _, known := knownHash[fieldHash]
+                        if known {
+                                return &generalStructDecoder{typ, fields, false}
+                        }
+                        knownHash[fieldHash] = struct{}{}
+                        if fieldName1 == 0 {
+                                fieldName1 = fieldHash
+                                fieldDecoder1 = fieldDecoder
+                        } else if fieldName2 == 0 {
+                                fieldName2 = fieldHash
+                                fieldDecoder2 = fieldDecoder
+                        } else if fieldName3 == 0 {
+                                fieldName3 = fieldHash
+                                fieldDecoder3 = fieldDecoder
+                        } else if fieldName4 == 0 {
+                                fieldName4 = fieldHash
+                                fieldDecoder4 = fieldDecoder
+                        } else if fieldName5 == 0 {
+                                fieldName5 = fieldHash
+                                fieldDecoder5 = fieldDecoder
+                        } else if fieldName6 == 0 {
+                                fieldName6 = fieldHash
+                                fieldDecoder6 = fieldDecoder
+                        } else if fieldName7 == 0 {
+                                fieldName7 = fieldHash
+                                fieldDecoder7 = fieldDecoder
+                        } else if fieldName8 == 0 {
+                                fieldName8 = fieldHash
+                                fieldDecoder8 = fieldDecoder
+                        } else {
+                                fieldName9 = fieldHash
+                                fieldDecoder9 = fieldDecoder
+                        }
+                }
+                return &nineFieldsStructDecoder{typ,
+                        fieldName1, fieldDecoder1,
+                        fieldName2, fieldDecoder2,
+                        fieldName3, fieldDecoder3,
+                        fieldName4, fieldDecoder4,
+                        fieldName5, fieldDecoder5,
+                        fieldName6, fieldDecoder6,
+                        fieldName7, fieldDecoder7,
+                        fieldName8, fieldDecoder8,
+                        fieldName9, fieldDecoder9}
+        case 10:
+                var fieldName1 int64
+                var fieldName2 int64
+                var fieldName3 int64
+                var fieldName4 int64
+                var fieldName5 int64
+                var fieldName6 int64
+                var fieldName7 int64
+                var fieldName8 int64
+                var fieldName9 int64
+                var fieldName10 int64
+                var fieldDecoder1 *structFieldDecoder
+                var fieldDecoder2 *structFieldDecoder
+                var fieldDecoder3 *structFieldDecoder
+                var fieldDecoder4 *structFieldDecoder
+                var fieldDecoder5 *structFieldDecoder
+                var fieldDecoder6 *structFieldDecoder
+                var fieldDecoder7 *structFieldDecoder
+                var fieldDecoder8 *structFieldDecoder
+                var fieldDecoder9 *structFieldDecoder
+                var fieldDecoder10 *structFieldDecoder
+                for fieldName, fieldDecoder := range fields {
+                        fieldHash := calcHash(fieldName, ctx.caseSensitive())
+                        _, known := knownHash[fieldHash]
+                        if known {
+                                return &generalStructDecoder{typ, fields, false}
+                        }
+                        knownHash[fieldHash] = struct{}{}
+                        if fieldName1 == 0 {
+                                fieldName1 = fieldHash
+                                fieldDecoder1 = fieldDecoder
+                        } else if fieldName2 == 0 {
+                                fieldName2 = fieldHash
+                                fieldDecoder2 = fieldDecoder
+                        } else if fieldName3 == 0 {
+                                fieldName3 = fieldHash
+                                fieldDecoder3 = fieldDecoder
+                        } else if fieldName4 == 0 {
+                                fieldName4 = fieldHash
+                                fieldDecoder4 = fieldDecoder
+                        } else if fieldName5 == 0 {
+                                fieldName5 = fieldHash
+                                fieldDecoder5 = fieldDecoder
+                        } else if fieldName6 == 0 {
+                                fieldName6 = fieldHash
+                                fieldDecoder6 = fieldDecoder
+                        } else if fieldName7 == 0 {
+                                fieldName7 = fieldHash
+                                fieldDecoder7 = fieldDecoder
+                        } else if fieldName8 == 0 {
+                                fieldName8 = fieldHash
+                                fieldDecoder8 = fieldDecoder
+                        } else if fieldName9 == 0 {
+                                fieldName9 = fieldHash
+                                fieldDecoder9 = fieldDecoder
+                        } else {
+                                fieldName10 = fieldHash
+                                fieldDecoder10 = fieldDecoder
+                        }
+                }
+                return &tenFieldsStructDecoder{typ,
+                        fieldName1, fieldDecoder1,
+                        fieldName2, fieldDecoder2,
+                        fieldName3, fieldDecoder3,
+                        fieldName4, fieldDecoder4,
+                        fieldName5, fieldDecoder5,
+                        fieldName6, fieldDecoder6,
+                        fieldName7, fieldDecoder7,
+                        fieldName8, fieldDecoder8,
+                        fieldName9, fieldDecoder9,
+                        fieldName10, fieldDecoder10}
+        }
+        return &generalStructDecoder{typ, fields, false}
+}
+
+type generalStructDecoder struct {
+        typ                   reflect2.Type
+        fields                map[string]*structFieldDecoder
+        disallowUnknownFields bool
+}
+
+func (decoder *generalStructDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) {
+        if !iter.readObjectStart() {
+                return
+        }
+        if !iter.incrementDepth() {
+                return
+        }
+        var c byte
+        for c = ','; c == ','; c = iter.nextToken() {
+                decoder.decodeOneField(ptr, iter)
+        }
+        if iter.Error != nil && iter.Error != io.EOF && len(decoder.typ.Type1().Name()) != 0 {
+                iter.Error = fmt.Errorf("%v.%s", decoder.typ, iter.Error.Error())
+        }
+        if c != '}' {
+                iter.ReportError("struct Decode", `expect }, but found `+string([]byte{c}))
+        }
+        iter.decrementDepth()
+}
+
+func (decoder *generalStructDecoder) decodeOneField(ptr unsafe.Pointer, iter *Iterator) {
+        var field string
+        var fieldDecoder *structFieldDecoder
+        if iter.cfg.objectFieldMustBeSimpleString {
+                fieldBytes := iter.ReadStringAsSlice()
+                field = *(*string)(unsafe.Pointer(&fieldBytes))
+                fieldDecoder = decoder.fields[field]
+                if fieldDecoder == nil && !iter.cfg.caseSensitive {
+                        fieldDecoder = decoder.fields[strings.ToLower(field)]
+                }
+        } else {
+                field = iter.ReadString()
+                fieldDecoder = decoder.fields[field]
+                if fieldDecoder == nil && !iter.cfg.caseSensitive {
+                        fieldDecoder = decoder.fields[strings.ToLower(field)]
+                }
+        }
+        if fieldDecoder == nil {
+                if decoder.disallowUnknownFields {
+                        msg := "found unknown field: " + field
+                        iter.ReportError("ReadObject", msg)
+                }
+                c := iter.nextToken()
+                if c != ':' {
+                        iter.ReportError("ReadObject", "expect : after object field, but found "+string([]byte{c}))
+                }
+                iter.Skip()
+                return
+        }
+        c := iter.nextToken()
+        if c != ':' {
+                iter.ReportError("ReadObject", "expect : after object field, but found "+string([]byte{c}))
+        }
+        fieldDecoder.Decode(ptr, iter)
+}
+
+type skipObjectDecoder struct {
+        typ reflect2.Type
+}
+
+func (decoder *skipObjectDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) {
+        valueType := iter.WhatIsNext()
+        if valueType != ObjectValue && valueType != NilValue {
+                iter.ReportError("skipObjectDecoder", "expect object or null")
+                return
+        }
+        iter.Skip()
+}
+
+type oneFieldStructDecoder struct {
+        typ          reflect2.Type
+        fieldHash    int64
+        fieldDecoder *structFieldDecoder
+}
+
+func (decoder *oneFieldStructDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) {
+        if !iter.readObjectStart() {
+                return
+        }
+        if !iter.incrementDepth() {
+                return
+        }
+        for {
+                if iter.readFieldHash() == decoder.fieldHash {
+                        decoder.fieldDecoder.Decode(ptr, iter)
+                } else {
+                        iter.Skip()
+                }
+                if iter.isObjectEnd() {
+                        break
+                }
+        }
+        if iter.Error != nil && iter.Error != io.EOF && len(decoder.typ.Type1().Name()) != 0 {
+                iter.Error = fmt.Errorf("%v.%s", decoder.typ, iter.Error.Error())
+        }
+        iter.decrementDepth()
+}
+
+type twoFieldsStructDecoder struct {
+        typ           reflect2.Type
+        fieldHash1    int64
+        fieldDecoder1 *structFieldDecoder
+        fieldHash2    int64
+        fieldDecoder2 *structFieldDecoder
+}
+
+func (decoder *twoFieldsStructDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) {
+        if !iter.readObjectStart() {
+                return
+        }
+        if !iter.incrementDepth() {
+                return
+        }
+        for {
+                switch iter.readFieldHash() {
+                case decoder.fieldHash1:
+                        decoder.fieldDecoder1.Decode(ptr, iter)
+                case decoder.fieldHash2:
+                        decoder.fieldDecoder2.Decode(ptr, iter)
+                default:
+                        iter.Skip()
+                }
+                if iter.isObjectEnd() {
+                        break
+                }
+        }
+        if iter.Error != nil && iter.Error != io.EOF && len(decoder.typ.Type1().Name()) != 0 {
+                iter.Error = fmt.Errorf("%v.%s", decoder.typ, iter.Error.Error())
+        }
+        iter.decrementDepth()
+}
+
+type threeFieldsStructDecoder struct {
+        typ           reflect2.Type
+        fieldHash1    int64
+        fieldDecoder1 *structFieldDecoder
+        fieldHash2    int64
+        fieldDecoder2 *structFieldDecoder
+        fieldHash3    int64
+        fieldDecoder3 *structFieldDecoder
+}
+
+func (decoder *threeFieldsStructDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) {
+        if !iter.readObjectStart() {
+                return
+        }
+        if !iter.incrementDepth() {
+                return
+        }
+        for {
+                switch iter.readFieldHash() {
+                case decoder.fieldHash1:
+                        decoder.fieldDecoder1.Decode(ptr, iter)
+                case decoder.fieldHash2:
+                        decoder.fieldDecoder2.Decode(ptr, iter)
+                case decoder.fieldHash3:
+                        decoder.fieldDecoder3.Decode(ptr, iter)
+                default:
+                        iter.Skip()
+                }
+                if iter.isObjectEnd() {
+                        break
+                }
+        }
+        if iter.Error != nil && iter.Error != io.EOF && len(decoder.typ.Type1().Name()) != 0 {
+                iter.Error = fmt.Errorf("%v.%s", decoder.typ, iter.Error.Error())
+        }
+        iter.decrementDepth()
+}
+
+type fourFieldsStructDecoder struct {
+        typ           reflect2.Type
+        fieldHash1    int64
+        fieldDecoder1 *structFieldDecoder
+        fieldHash2    int64
+        fieldDecoder2 *structFieldDecoder
+        fieldHash3    int64
+        fieldDecoder3 *structFieldDecoder
+        fieldHash4    int64
+        fieldDecoder4 *structFieldDecoder
+}
+
+func (decoder *fourFieldsStructDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) {
+        if !iter.readObjectStart() {
+                return
+        }
+        if !iter.incrementDepth() {
+                return
+        }
+        for {
+                switch iter.readFieldHash() {
+                case decoder.fieldHash1:
+                        decoder.fieldDecoder1.Decode(ptr, iter)
+                case decoder.fieldHash2:
+                        decoder.fieldDecoder2.Decode(ptr, iter)
+                case decoder.fieldHash3:
+                        decoder.fieldDecoder3.Decode(ptr, iter)
+                case decoder.fieldHash4:
+                        decoder.fieldDecoder4.Decode(ptr, iter)
+                default:
+                        iter.Skip()
+                }
+                if iter.isObjectEnd() {
+                        break
+                }
+        }
+        if iter.Error != nil && iter.Error != io.EOF && len(decoder.typ.Type1().Name()) != 0 {
+                iter.Error = fmt.Errorf("%v.%s", decoder.typ, iter.Error.Error())
+        }
+        iter.decrementDepth()
+}
+
+type fiveFieldsStructDecoder struct {
+        typ           reflect2.Type
+        fieldHash1    int64
+        fieldDecoder1 *structFieldDecoder
+        fieldHash2    int64
+        fieldDecoder2 *structFieldDecoder
+        fieldHash3    int64
+        fieldDecoder3 *structFieldDecoder
+        fieldHash4    int64
+        fieldDecoder4 *structFieldDecoder
+        fieldHash5    int64
+        fieldDecoder5 *structFieldDecoder
+}
+
+func (decoder *fiveFieldsStructDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) {
+        if !iter.readObjectStart() {
+                return
+        }
+        if !iter.incrementDepth() {
+                return
+        }
+        for {
+                switch iter.readFieldHash() {
+                case decoder.fieldHash1:
+                        decoder.fieldDecoder1.Decode(ptr, iter)
+                case decoder.fieldHash2:
+                        decoder.fieldDecoder2.Decode(ptr, iter)
+                case decoder.fieldHash3:
+                        decoder.fieldDecoder3.Decode(ptr, iter)
+                case decoder.fieldHash4:
+                        decoder.fieldDecoder4.Decode(ptr, iter)
+                case decoder.fieldHash5:
+                        decoder.fieldDecoder5.Decode(ptr, iter)
+                default:
+                        iter.Skip()
+                }
+                if iter.isObjectEnd() {
+                        break
+                }
+        }
+        if iter.Error != nil && iter.Error != io.EOF && len(decoder.typ.Type1().Name()) != 0 {
+                iter.Error = fmt.Errorf("%v.%s", decoder.typ, iter.Error.Error())
+        }
+        iter.decrementDepth()
+}
+
+type sixFieldsStructDecoder struct {
+        typ           reflect2.Type
+        fieldHash1    int64
+        fieldDecoder1 *structFieldDecoder
+        fieldHash2    int64
+        fieldDecoder2 *structFieldDecoder
+        fieldHash3    int64
+        fieldDecoder3 *structFieldDecoder
+        fieldHash4    int64
+        fieldDecoder4 *structFieldDecoder
+        fieldHash5    int64
+        fieldDecoder5 *structFieldDecoder
+        fieldHash6    int64
+        fieldDecoder6 *structFieldDecoder
+}
+
+func (decoder *sixFieldsStructDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) {
+        if !iter.readObjectStart() {
+                return
+        }
+        if !iter.incrementDepth() {
+                return
+        }
+        for {
+                switch iter.readFieldHash() {
+                case decoder.fieldHash1:
+                        decoder.fieldDecoder1.Decode(ptr, iter)
+                case decoder.fieldHash2:
+                        decoder.fieldDecoder2.Decode(ptr, iter)
+                case decoder.fieldHash3:
+                        decoder.fieldDecoder3.Decode(ptr, iter)
+                case decoder.fieldHash4:
+                        decoder.fieldDecoder4.Decode(ptr, iter)
+                case decoder.fieldHash5:
+                        decoder.fieldDecoder5.Decode(ptr, iter)
+                case decoder.fieldHash6:
+                        decoder.fieldDecoder6.Decode(ptr, iter)
+                default:
+                        iter.Skip()
+                }
+                if iter.isObjectEnd() {
+                        break
+                }
+        }
+        if iter.Error != nil && iter.Error != io.EOF && len(decoder.typ.Type1().Name()) != 0 {
+                iter.Error = fmt.Errorf("%v.%s", decoder.typ, iter.Error.Error())
+        }
+        iter.decrementDepth()
+}
+
+type sevenFieldsStructDecoder struct {
+        typ           reflect2.Type
+        fieldHash1    int64
+        fieldDecoder1 *structFieldDecoder
+        fieldHash2    int64
+        fieldDecoder2 *structFieldDecoder
+        fieldHash3    int64
+        fieldDecoder3 *structFieldDecoder
+        fieldHash4    int64
+        fieldDecoder4 *structFieldDecoder
+        fieldHash5    int64
+        fieldDecoder5 *structFieldDecoder
+        fieldHash6    int64
+        fieldDecoder6 *structFieldDecoder
+        fieldHash7    int64
+        fieldDecoder7 *structFieldDecoder
+}
+
+func (decoder *sevenFieldsStructDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) {
+        if !iter.readObjectStart() {
+                return
+        }
+        if !iter.incrementDepth() {
+                return
+        }
+        for {
+                switch iter.readFieldHash() {
+                case decoder.fieldHash1:
+                        decoder.fieldDecoder1.Decode(ptr, iter)
+                case decoder.fieldHash2:
+                        decoder.fieldDecoder2.Decode(ptr, iter)
+                case decoder.fieldHash3:
+                        decoder.fieldDecoder3.Decode(ptr, iter)
+                case decoder.fieldHash4:
+                        decoder.fieldDecoder4.Decode(ptr, iter)
+                case decoder.fieldHash5:
+                        decoder.fieldDecoder5.Decode(ptr, iter)
+                case decoder.fieldHash6:
+                        decoder.fieldDecoder6.Decode(ptr, iter)
+                case decoder.fieldHash7:
+                        decoder.fieldDecoder7.Decode(ptr, iter)
+                default:
+                        iter.Skip()
+                }
+                if iter.isObjectEnd() {
+                        break
+                }
+        }
+        if iter.Error != nil && iter.Error != io.EOF && len(decoder.typ.Type1().Name()) != 0 {
+                iter.Error = fmt.Errorf("%v.%s", decoder.typ, iter.Error.Error())
+        }
+        iter.decrementDepth()
+}
+
+type eightFieldsStructDecoder struct {
+        typ           reflect2.Type
+        fieldHash1    int64
+        fieldDecoder1 *structFieldDecoder
+        fieldHash2    int64
+        fieldDecoder2 *structFieldDecoder
+        fieldHash3    int64
+        fieldDecoder3 *structFieldDecoder
+        fieldHash4    int64
+        fieldDecoder4 *structFieldDecoder
+        fieldHash5    int64
+        fieldDecoder5 *structFieldDecoder
+        fieldHash6    int64
+        fieldDecoder6 *structFieldDecoder
+        fieldHash7    int64
+        fieldDecoder7 *structFieldDecoder
+        fieldHash8    int64
+        fieldDecoder8 *structFieldDecoder
+}
+
+func (decoder *eightFieldsStructDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) {
+        if !iter.readObjectStart() {
+                return
+        }
+        if !iter.incrementDepth() {
+                return
+        }
+        for {
+                switch iter.readFieldHash() {
+                case decoder.fieldHash1:
+                        decoder.fieldDecoder1.Decode(ptr, iter)
+                case decoder.fieldHash2:
+                        decoder.fieldDecoder2.Decode(ptr, iter)
+                case decoder.fieldHash3:
+                        decoder.fieldDecoder3.Decode(ptr, iter)
+                case decoder.fieldHash4:
+                        decoder.fieldDecoder4.Decode(ptr, iter)
+                case decoder.fieldHash5:
+                        decoder.fieldDecoder5.Decode(ptr, iter)
+                case decoder.fieldHash6:
+                        decoder.fieldDecoder6.Decode(ptr, iter)
+                case decoder.fieldHash7:
+                        decoder.fieldDecoder7.Decode(ptr, iter)
+                case decoder.fieldHash8:
+                        decoder.fieldDecoder8.Decode(ptr, iter)
+                default:
+                        iter.Skip()
+                }
+                if iter.isObjectEnd() {
+                        break
+                }
+        }
+        if iter.Error != nil && iter.Error != io.EOF && len(decoder.typ.Type1().Name()) != 0 {
+                iter.Error = fmt.Errorf("%v.%s", decoder.typ, iter.Error.Error())
+        }
+        iter.decrementDepth()
+}
+
+type nineFieldsStructDecoder struct {
+        typ           reflect2.Type
+        fieldHash1    int64
+        fieldDecoder1 *structFieldDecoder
+        fieldHash2    int64
+        fieldDecoder2 *structFieldDecoder
+        fieldHash3    int64
+        fieldDecoder3 *structFieldDecoder
+        fieldHash4    int64
+        fieldDecoder4 *structFieldDecoder
+        fieldHash5    int64
+        fieldDecoder5 *structFieldDecoder
+        fieldHash6    int64
+        fieldDecoder6 *structFieldDecoder
+        fieldHash7    int64
+        fieldDecoder7 *structFieldDecoder
+        fieldHash8    int64
+        fieldDecoder8 *structFieldDecoder
+        fieldHash9    int64
+        fieldDecoder9 *structFieldDecoder
+}
+
+func (decoder *nineFieldsStructDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) {
+        if !iter.readObjectStart() {
+                return
+        }
+        if !iter.incrementDepth() {
+                return
+        }
+        for {
+                switch iter.readFieldHash() {
+                case decoder.fieldHash1:
+                        decoder.fieldDecoder1.Decode(ptr, iter)
+                case decoder.fieldHash2:
+                        decoder.fieldDecoder2.Decode(ptr, iter)
+                case decoder.fieldHash3:
+                        decoder.fieldDecoder3.Decode(ptr, iter)
+                case decoder.fieldHash4:
+                        decoder.fieldDecoder4.Decode(ptr, iter)
+                case decoder.fieldHash5:
+                        decoder.fieldDecoder5.Decode(ptr, iter)
+                case decoder.fieldHash6:
+                        decoder.fieldDecoder6.Decode(ptr, iter)
+                case decoder.fieldHash7:
+                        decoder.fieldDecoder7.Decode(ptr, iter)
+                case decoder.fieldHash8:
+                        decoder.fieldDecoder8.Decode(ptr, iter)
+                case decoder.fieldHash9:
+                        decoder.fieldDecoder9.Decode(ptr, iter)
+                default:
+                        iter.Skip()
+                }
+                if iter.isObjectEnd() {
+                        break
+                }
+        }
+        if iter.Error != nil && iter.Error != io.EOF && len(decoder.typ.Type1().Name()) != 0 {
+                iter.Error = fmt.Errorf("%v.%s", decoder.typ, iter.Error.Error())
+        }
+        iter.decrementDepth()
+}
+
+type tenFieldsStructDecoder struct {
+        typ            reflect2.Type
+        fieldHash1     int64
+        fieldDecoder1  *structFieldDecoder
+        fieldHash2     int64
+        fieldDecoder2  *structFieldDecoder
+        fieldHash3     int64
+        fieldDecoder3  *structFieldDecoder
+        fieldHash4     int64
+        fieldDecoder4  *structFieldDecoder
+        fieldHash5     int64
+        fieldDecoder5  *structFieldDecoder
+        fieldHash6     int64
+        fieldDecoder6  *structFieldDecoder
+        fieldHash7     int64
+        fieldDecoder7  *structFieldDecoder
+        fieldHash8     int64
+        fieldDecoder8  *structFieldDecoder
+        fieldHash9     int64
+        fieldDecoder9  *structFieldDecoder
+        fieldHash10    int64
+        fieldDecoder10 *structFieldDecoder
+}
+
+func (decoder *tenFieldsStructDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) {
+        if !iter.readObjectStart() {
+                return
+        }
+        if !iter.incrementDepth() {
+                return
+        }
+        for {
+                switch iter.readFieldHash() {
+                case decoder.fieldHash1:
+                        decoder.fieldDecoder1.Decode(ptr, iter)
+                case decoder.fieldHash2:
+                        decoder.fieldDecoder2.Decode(ptr, iter)
+                case decoder.fieldHash3:
+                        decoder.fieldDecoder3.Decode(ptr, iter)
+                case decoder.fieldHash4:
+                        decoder.fieldDecoder4.Decode(ptr, iter)
+                case decoder.fieldHash5:
+                        decoder.fieldDecoder5.Decode(ptr, iter)
+                case decoder.fieldHash6:
+                        decoder.fieldDecoder6.Decode(ptr, iter)
+                case decoder.fieldHash7:
+                        decoder.fieldDecoder7.Decode(ptr, iter)
+                case decoder.fieldHash8:
+                        decoder.fieldDecoder8.Decode(ptr, iter)
+                case decoder.fieldHash9:
+                        decoder.fieldDecoder9.Decode(ptr, iter)
+                case decoder.fieldHash10:
+                        decoder.fieldDecoder10.Decode(ptr, iter)
+                default:
+                        iter.Skip()
+                }
+                if iter.isObjectEnd() {
+                        break
+                }
+        }
+        if iter.Error != nil && iter.Error != io.EOF && len(decoder.typ.Type1().Name()) != 0 {
+                iter.Error = fmt.Errorf("%v.%s", decoder.typ, iter.Error.Error())
+        }
+        iter.decrementDepth()
+}
+
+type structFieldDecoder struct {
+        field        reflect2.StructField
+        fieldDecoder ValDecoder
+}
+
+func (decoder *structFieldDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) {
+        fieldPtr := decoder.field.UnsafeGet(ptr)
+        decoder.fieldDecoder.Decode(fieldPtr, iter)
+        if iter.Error != nil && iter.Error != io.EOF {
+                iter.Error = fmt.Errorf("%s: %s", decoder.field.Name(), iter.Error.Error())
+        }
+}
+
+type stringModeStringDecoder struct {
+        elemDecoder ValDecoder
+        cfg         *frozenConfig
+}
+
+func (decoder *stringModeStringDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) {
+        decoder.elemDecoder.Decode(ptr, iter)
+        str := *((*string)(ptr))
+        tempIter := decoder.cfg.BorrowIterator([]byte(str))
+        defer decoder.cfg.ReturnIterator(tempIter)
+        *((*string)(ptr)) = tempIter.ReadString()
+}
+
+type stringModeNumberDecoder struct {
+        elemDecoder ValDecoder
+}
+
+func (decoder *stringModeNumberDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) {
+        if iter.WhatIsNext() == NilValue {
+                decoder.elemDecoder.Decode(ptr, iter)
+                return
+        }
+
+        c := iter.nextToken()
+        if c != '"' {
+                iter.ReportError("stringModeNumberDecoder", `expect ", but found `+string([]byte{c}))
+                return
+        }
+        decoder.elemDecoder.Decode(ptr, iter)
+        if iter.Error != nil {
+                return
+        }
+        c = iter.readByte()
+        if c != '"' {
+                iter.ReportError("stringModeNumberDecoder", `expect ", but found `+string([]byte{c}))
+                return
+        }
+}
diff --git a/vendor/github.com/json-iterator/go/reflect_struct_encoder.go b/vendor/github.com/json-iterator/go/reflect_struct_encoder.go
new file mode 100644
index 0000000..152e3ef
--- /dev/null
+++ b/vendor/github.com/json-iterator/go/reflect_struct_encoder.go
@@ -0,0 +1,211 @@
+package jsoniter
+
+import (
+        "fmt"
+        "github.com/modern-go/reflect2"
+        "io"
+        "reflect"
+        "unsafe"
+)
+
+func encoderOfStruct(ctx *ctx, typ reflect2.Type) ValEncoder {
+        type bindingTo struct {
+                binding *Binding
+                toName  string
+                ignored bool
+        }
+        orderedBindings := []*bindingTo{}
+        structDescriptor := describeStruct(ctx, typ)
+        for _, binding := range structDescriptor.Fields {
+                for _, toName := range binding.ToNames {
+                        new := &bindingTo{
+                                binding: binding,
+                                toName:  toName,
+                        }
+                        for _, old := range orderedBindings {
+                                if old.toName != toName {
+                                        continue
+                                }
+                                old.ignored, new.ignored = resolveConflictBinding(ctx.frozenConfig, old.binding, new.binding)
+                        }
+                        orderedBindings = append(orderedBindings, new)
+                }
+        }
+        if len(orderedBindings) == 0 {
+                return &emptyStructEncoder{}
+        }
+        finalOrderedFields := []structFieldTo{}
+        for _, bindingTo := range orderedBindings {
+                if !bindingTo.ignored {
+                        finalOrderedFields = append(finalOrderedFields, structFieldTo{
+                                encoder: bindingTo.binding.Encoder.(*structFieldEncoder),
+                                toName:  bindingTo.toName,
+                        })
+                }
+        }
+        return &structEncoder{typ, finalOrderedFields}
+}
+
+func createCheckIsEmpty(ctx *ctx, typ reflect2.Type) checkIsEmpty {
+        encoder := createEncoderOfNative(ctx, typ)
+        if encoder != nil {
+                return encoder
+        }
+        kind := typ.Kind()
+        switch kind {
+        case reflect.Interface:
+                return &dynamicEncoder{typ}
+        case reflect.Struct:
+                return &structEncoder{typ: typ}
+        case reflect.Array:
+                return &arrayEncoder{}
+        case reflect.Slice:
+                return &sliceEncoder{}
+        case reflect.Map:
+                return encoderOfMap(ctx, typ)
+        case reflect.Ptr:
+                return &OptionalEncoder{}
+        default:
+                return &lazyErrorEncoder{err: fmt.Errorf("unsupported type: %v", typ)}
+        }
+}
+
+func resolveConflictBinding(cfg *frozenConfig, old, new *Binding) (ignoreOld, ignoreNew bool) {
+        newTagged := new.Field.Tag().Get(cfg.getTagKey()) != ""
+        oldTagged := old.Field.Tag().Get(cfg.getTagKey()) != ""
+        if newTagged {
+                if oldTagged {
+                        if len(old.levels) > len(new.levels) {
+                                return true, false
+                        } else if len(new.levels) > len(old.levels) {
+                                return false, true
+                        } else {
+                                return true, true
+                        }
+                } else {
+                        return true, false
+                }
+        } else {
+                if oldTagged {
+                        return true, false
+                }
+                if len(old.levels) > len(new.levels) {
+                        return true, false
+                } else if len(new.levels) > len(old.levels) {
+                        return false, true
+                } else {
+                        return true, true
+                }
+        }
+}
+
+type structFieldEncoder struct {
+        field        reflect2.StructField
+        fieldEncoder ValEncoder
+        omitempty    bool
+}
+
+func (encoder *structFieldEncoder) Encode(ptr unsafe.Pointer, stream *Stream) {
+        fieldPtr := encoder.field.UnsafeGet(ptr)
+        encoder.fieldEncoder.Encode(fieldPtr, stream)
+        if stream.Error != nil && stream.Error != io.EOF {
+                stream.Error = fmt.Errorf("%s: %s", encoder.field.Name(), stream.Error.Error())
+        }
+}
+
+func (encoder *structFieldEncoder) IsEmpty(ptr unsafe.Pointer) bool {
+        fieldPtr := encoder.field.UnsafeGet(ptr)
+        return encoder.fieldEncoder.IsEmpty(fieldPtr)
+}
+
+func (encoder *structFieldEncoder) IsEmbeddedPtrNil(ptr unsafe.Pointer) bool {
+        isEmbeddedPtrNil, converted := encoder.fieldEncoder.(IsEmbeddedPtrNil)
+        if !converted {
+                return false
+        }
+        fieldPtr := encoder.field.UnsafeGet(ptr)
+        return isEmbeddedPtrNil.IsEmbeddedPtrNil(fieldPtr)
+}
+
+type IsEmbeddedPtrNil interface {
+        IsEmbeddedPtrNil(ptr unsafe.Pointer) bool
+}
+
+type structEncoder struct {
+        typ    reflect2.Type
+        fields []structFieldTo
+}
+
+type structFieldTo struct {
+        encoder *structFieldEncoder
+        toName  string
+}
+
+func (encoder *structEncoder) Encode(ptr unsafe.Pointer, stream *Stream) {
+        stream.WriteObjectStart()
+        isNotFirst := false
+        for _, field := range encoder.fields {
+                if field.encoder.omitempty && field.encoder.IsEmpty(ptr) {
+                        continue
+                }
+                if field.encoder.IsEmbeddedPtrNil(ptr) {
+                        continue
+                }
+                if isNotFirst {
+                        stream.WriteMore()
+                }
+                stream.WriteObjectField(field.toName)
+                field.encoder.Encode(ptr, stream)
+                isNotFirst = true
+        }
+        stream.WriteObjectEnd()
+        if stream.Error != nil && stream.Error != io.EOF {
+                stream.Error = fmt.Errorf("%v.%s", encoder.typ, stream.Error.Error())
+        }
+}
+
+func (encoder *structEncoder) IsEmpty(ptr unsafe.Pointer) bool {
+        return false
+}
+
+type emptyStructEncoder struct {
+}
+
+func (encoder *emptyStructEncoder) Encode(ptr unsafe.Pointer, stream *Stream) {
+        stream.WriteEmptyObject()
+}
+
+func (encoder *emptyStructEncoder) IsEmpty(ptr unsafe.Pointer) bool {
+        return false
+}
+
+type stringModeNumberEncoder struct {
+        elemEncoder ValEncoder
+}
+
+func (encoder *stringModeNumberEncoder) Encode(ptr unsafe.Pointer, stream *Stream) {
+        stream.writeByte('"')
+        encoder.elemEncoder.Encode(ptr, stream)
+        stream.writeByte('"')
+}
+
+func (encoder *stringModeNumberEncoder) IsEmpty(ptr unsafe.Pointer) bool {
+        return encoder.elemEncoder.IsEmpty(ptr)
+}
+
+type stringModeStringEncoder struct {
+        elemEncoder ValEncoder
+        cfg         *frozenConfig
+}
+
+func (encoder *stringModeStringEncoder) Encode(ptr unsafe.Pointer, stream *Stream) {
+        tempStream := encoder.cfg.BorrowStream(nil)
+        tempStream.Attachment = stream.Attachment
+        defer encoder.cfg.ReturnStream(tempStream)
+        encoder.elemEncoder.Encode(ptr, tempStream)
+        stream.WriteString(string(tempStream.Buffer()))
+}
+
+func (encoder *stringModeStringEncoder) IsEmpty(ptr unsafe.Pointer) bool {
+        return encoder.elemEncoder.IsEmpty(ptr)
+}
diff --git a/vendor/github.com/json-iterator/go/stream.go b/vendor/github.com/json-iterator/go/stream.go
new file mode 100644
index 0000000..23d8a3a
--- /dev/null
+++ b/vendor/github.com/json-iterator/go/stream.go
@@ -0,0 +1,210 @@
+package jsoniter
+
+import (
+        "io"
+)
+
+// stream is a io.Writer like object, with JSON specific write functions.
+// Error is not returned as return value, but stored as Error member on this stream instance.
+type Stream struct {
+        cfg        *frozenConfig
+        out        io.Writer
+        buf        []byte
+        Error      error
+        indention  int
+        Attachment interface{} // open for customized encoder
+}
+
+// NewStream create new stream instance.
+// cfg can be jsoniter.ConfigDefault.
+// out can be nil if write to internal buffer.
+// bufSize is the initial size for the internal buffer in bytes.
+func NewStream(cfg API, out io.Writer, bufSize int) *Stream {
+        return &Stream{
+                cfg:       cfg.(*frozenConfig),
+                out:       out,
+                buf:       make([]byte, 0, bufSize),
+                Error:     nil,
+                indention: 0,
+        }
+}
+
+// Pool returns a pool can provide more stream with same configuration
+func (stream *Stream) Pool() StreamPool {
+        return stream.cfg
+}
+
+// Reset reuse this stream instance by assign a new writer
+func (stream *Stream) Reset(out io.Writer) {
+        stream.out = out
+        stream.buf = stream.buf[:0]
+}
+
+// Available returns how many bytes are unused in the buffer.
+func (stream *Stream) Available() int {
+        return cap(stream.buf) - len(stream.buf)
+}
+
+// Buffered returns the number of bytes that have been written into the current buffer.
+func (stream *Stream) Buffered() int {
+        return len(stream.buf)
+}
+
+// Buffer if writer is nil, use this method to take the result
+func (stream *Stream) Buffer() []byte {
+        return stream.buf
+}
+
+// SetBuffer allows to append to the internal buffer directly
+func (stream *Stream) SetBuffer(buf []byte) {
+        stream.buf = buf
+}
+
+// Write writes the contents of p into the buffer.
+// It returns the number of bytes written.
+// If nn < len(p), it also returns an error explaining
+// why the write is short.
+func (stream *Stream) Write(p []byte) (nn int, err error) {
+        stream.buf = append(stream.buf, p...)
+        if stream.out != nil {
+                nn, err = stream.out.Write(stream.buf)
+                stream.buf = stream.buf[nn:]
+                return
+        }
+        return len(p), nil
+}
+
+// WriteByte writes a single byte.
+func (stream *Stream) writeByte(c byte) {
+        stream.buf = append(stream.buf, c)
+}
+
+func (stream *Stream) writeTwoBytes(c1 byte, c2 byte) {
+        stream.buf = append(stream.buf, c1, c2)
+}
+
+func (stream *Stream) writeThreeBytes(c1 byte, c2 byte, c3 byte) {
+        stream.buf = append(stream.buf, c1, c2, c3)
+}
+
+func (stream *Stream) writeFourBytes(c1 byte, c2 byte, c3 byte, c4 byte) {
+        stream.buf = append(stream.buf, c1, c2, c3, c4)
+}
+
+func (stream *Stream) writeFiveBytes(c1 byte, c2 byte, c3 byte, c4 byte, c5 byte) {
+        stream.buf = append(stream.buf, c1, c2, c3, c4, c5)
+}
+
+// Flush writes any buffered data to the underlying io.Writer.
+func (stream *Stream) Flush() error {
+        if stream.out == nil {
+                return nil
+        }
+        if stream.Error != nil {
+                return stream.Error
+        }
+        _, err := stream.out.Write(stream.buf)
+        if err != nil {
+                if stream.Error == nil {
+                        stream.Error = err
+                }
+                return err
+        }
+        stream.buf = stream.buf[:0]
+        return nil
+}
+
+// WriteRaw write string out without quotes, just like []byte
+func (stream *Stream) WriteRaw(s string) {
+        stream.buf = append(stream.buf, s...)
+}
+
+// WriteNil write null to stream
+func (stream *Stream) WriteNil() {
+        stream.writeFourBytes('n', 'u', 'l', 'l')
+}
+
+// WriteTrue write true to stream
+func (stream *Stream) WriteTrue() {
+        stream.writeFourBytes('t', 'r', 'u', 'e')
+}
+
+// WriteFalse write false to stream
+func (stream *Stream) WriteFalse() {
+        stream.writeFiveBytes('f', 'a', 'l', 's', 'e')
+}
+
+// WriteBool write true or false into stream
+func (stream *Stream) WriteBool(val bool) {
+        if val {
+                stream.WriteTrue()
+        } else {
+                stream.WriteFalse()
+        }
+}
+
+// WriteObjectStart write { with possible indention
+func (stream *Stream) WriteObjectStart() {
+        stream.indention += stream.cfg.indentionStep
+        stream.writeByte('{')
+        stream.writeIndention(0)
+}
+
+// WriteObjectField write "field": with possible indention
+func (stream *Stream) WriteObjectField(field string) {
+        stream.WriteString(field)
+        if stream.indention > 0 {
+                stream.writeTwoBytes(':', ' ')
+        } else {
+                stream.writeByte(':')
+        }
+}
+
+// WriteObjectEnd write } with possible indention
+func (stream *Stream) WriteObjectEnd() {
+        stream.writeIndention(stream.cfg.indentionStep)
+        stream.indention -= stream.cfg.indentionStep
+        stream.writeByte('}')
+}
+
+// WriteEmptyObject write {}
+func (stream *Stream) WriteEmptyObject() {
+        stream.writeByte('{')
+        stream.writeByte('}')
+}
+
+// WriteMore write , with possible indention
+func (stream *Stream) WriteMore() {
+        stream.writeByte(',')
+        stream.writeIndention(0)
+}
+
+// WriteArrayStart write [ with possible indention
+func (stream *Stream) WriteArrayStart() {
+        stream.indention += stream.cfg.indentionStep
+        stream.writeByte('[')
+        stream.writeIndention(0)
+}
+
+// WriteEmptyArray write []
+func (stream *Stream) WriteEmptyArray() {
+        stream.writeTwoBytes('[', ']')
+}
+
+// WriteArrayEnd write ] with possible indention
+func (stream *Stream) WriteArrayEnd() {
+        stream.writeIndention(stream.cfg.indentionStep)
+        stream.indention -= stream.cfg.indentionStep
+        stream.writeByte(']')
+}
+
+func (stream *Stream) writeIndention(delta int) {
+        if stream.indention == 0 {
+                return
+        }
+        stream.writeByte('\n')
+        toWrite := stream.indention - delta
+        for i := 0; i < toWrite; i++ {
+                stream.buf = append(stream.buf, ' ')
+        }
+}
diff --git a/vendor/github.com/json-iterator/go/stream_float.go b/vendor/github.com/json-iterator/go/stream_float.go
new file mode 100644
index 0000000..826aa59
--- /dev/null
+++ b/vendor/github.com/json-iterator/go/stream_float.go
@@ -0,0 +1,111 @@
+package jsoniter
+
+import (
+        "fmt"
+        "math"
+        "strconv"
+)
+
+var pow10 []uint64
+
+func init() {
+        pow10 = []uint64{1, 10, 100, 1000, 10000, 100000, 1000000}
+}
+
+// WriteFloat32 write float32 to stream
+func (stream *Stream) WriteFloat32(val float32) {
+        if math.IsInf(float64(val), 0) || math.IsNaN(float64(val)) {
+                stream.Error = fmt.Errorf("unsupported value: %f", val)
+                return
+        }
+        abs := math.Abs(float64(val))
+        fmt := byte('f')
+        // Note: Must use float32 comparisons for underlying float32 value to get precise cutoffs right.
+        if abs != 0 {
+                if float32(abs) < 1e-6 || float32(abs) >= 1e21 {
+                        fmt = 'e'
+                }
+        }
+        stream.buf = strconv.AppendFloat(stream.buf, float64(val), fmt, -1, 32)
+}
+
+// WriteFloat32Lossy write float32 to stream with ONLY 6 digits precision although much much faster
+func (stream *Stream) WriteFloat32Lossy(val float32) {
+        if math.IsInf(float64(val), 0) || math.IsNaN(float64(val)) {
+                stream.Error = fmt.Errorf("unsupported value: %f", val)
+                return
+        }
+        if val < 0 {
+                stream.writeByte('-')
+                val = -val
+        }
+        if val > 0x4ffffff {
+                stream.WriteFloat32(val)
+                return
+        }
+        precision := 6
+        exp := uint64(1000000) // 6
+        lval := uint64(float64(val)*float64(exp) + 0.5)
+        stream.WriteUint64(lval / exp)
+        fval := lval % exp
+        if fval == 0 {
+                return
+        }
+        stream.writeByte('.')
+        for p := precision - 1; p > 0 && fval < pow10[p]; p-- {
+                stream.writeByte('0')
+        }
+        stream.WriteUint64(fval)
+        for stream.buf[len(stream.buf)-1] == '0' {
+                stream.buf = stream.buf[:len(stream.buf)-1]
+        }
+}
+
+// WriteFloat64 write float64 to stream
+func (stream *Stream) WriteFloat64(val float64) {
+        if math.IsInf(val, 0) || math.IsNaN(val) {
+                stream.Error = fmt.Errorf("unsupported value: %f", val)
+                return
+        }
+        abs := math.Abs(val)
+        fmt := byte('f')
+        // Note: Must use float32 comparisons for underlying float32 value to get precise cutoffs right.
+        if abs != 0 {
+                if abs < 1e-6 || abs >= 1e21 {
+                        fmt = 'e'
+                }
+        }
+        stream.buf = strconv.AppendFloat(stream.buf, float64(val), fmt, -1, 64)
+}
+
+// WriteFloat64Lossy write float64 to stream with ONLY 6 digits precision although much much faster
+func (stream *Stream) WriteFloat64Lossy(val float64) {
+        if math.IsInf(val, 0) || math.IsNaN(val) {
+                stream.Error = fmt.Errorf("unsupported value: %f", val)
+                return
+        }
+        if val < 0 {
+                stream.writeByte('-')
+                val = -val
+        }
+        if val > 0x4ffffff {
+                stream.WriteFloat64(val)
+                return
+        }
+        precision := 6
+        exp := uint64(1000000) // 6
+        lval := uint64(val*float64(exp) + 0.5)
+        stream.WriteUint64(lval / exp)
+        fval := lval % exp
+        if fval == 0 {
+                return
+        }
+        stream.writeByte('.')
+        for p := precision - 1; p > 0 && fval < pow10[p]; p-- {
+                stream.writeByte('0')
+        }
+        stream.WriteUint64(fval)
+        for stream.buf[len(stream.buf)-1] == '0' {
+                stream.buf = stream.buf[:len(stream.buf)-1]
+        }
+}
diff --git a/vendor/github.com/json-iterator/go/stream_int.go b/vendor/github.com/json-iterator/go/stream_int.go
new file mode 100644
index 0000000..d1059ee
--- /dev/null
+++ b/vendor/github.com/json-iterator/go/stream_int.go
@@ -0,0 +1,190 @@
+package jsoniter
+
+var digits []uint32
+
+func init() {
+        digits = make([]uint32, 1000)
+        for i := uint32(0); i < 1000; i++ {
+                digits[i] = (((i / 100) + '0') << 16) + ((((i / 10) % 10) + '0') << 8) + i%10 + '0'
+                if i < 10 {
+                        digits[i] += 2 << 24
+                } else if i < 100 {
+                        digits[i] += 1 << 24
+                }
+        }
+}
+
+func writeFirstBuf(space []byte, v uint32) []byte {
+        start := v >> 24
+        if start == 0 {
+                space = append(space, byte(v>>16), byte(v>>8))
+        } else if start == 1 {
+                space = append(space, byte(v>>8))
+        }
+        space = append(space, byte(v))
+        return space
+}
+
+func writeBuf(buf []byte, v uint32) []byte {
+        return append(buf, byte(v>>16), byte(v>>8), byte(v))
+}
+
+// WriteUint8 write uint8 to stream
+func (stream *Stream) WriteUint8(val uint8) {
+        stream.buf = writeFirstBuf(stream.buf, digits[val])
+}
+
+// WriteInt8 write int8 to stream
+func (stream *Stream) WriteInt8(nval int8) {
+        var val uint8
+        if nval < 0 {
+                val = uint8(-nval)
+                stream.buf = append(stream.buf, '-')
+        } else {
+                val = uint8(nval)
+        }
+        stream.buf = writeFirstBuf(stream.buf, digits[val])
+}
+
+// WriteUint16 write uint16 to stream
+func (stream *Stream) WriteUint16(val uint16) {
+        q1 := val / 1000
+        if q1 == 0 {
+                stream.buf = writeFirstBuf(stream.buf, digits[val])
+                return
+        }
+        r1 := val - q1*1000
+        stream.buf = writeFirstBuf(stream.buf, digits[q1])
+        stream.buf = writeBuf(stream.buf, digits[r1])
+        return
+}
+
+// WriteInt16 write int16 to stream
+func (stream *Stream) WriteInt16(nval int16) {
+        var val uint16
+        if nval < 0 {
+                val = uint16(-nval)
+                stream.buf = append(stream.buf, '-')
+        } else {
+                val = uint16(nval)
+        }
+        stream.WriteUint16(val)
+}
+
+// WriteUint32 write uint32 to stream
+func (stream *Stream) WriteUint32(val uint32) {
+        q1 := val / 1000
+        if q1 == 0 {
+                stream.buf = writeFirstBuf(stream.buf, digits[val])
+                return
+        }
+        r1 := val - q1*1000
+        q2 := q1 / 1000
+        if q2 == 0 {
+                stream.buf = writeFirstBuf(stream.buf, digits[q1])
+                stream.buf = writeBuf(stream.buf, digits[r1])
+                return
+        }
+        r2 := q1 - q2*1000
+        q3 := q2 / 1000
+        if q3 == 0 {
+                stream.buf = writeFirstBuf(stream.buf, digits[q2])
+        } else {
+                r3 := q2 - q3*1000
+                stream.buf = append(stream.buf, byte(q3+'0'))
+                stream.buf = writeBuf(stream.buf, digits[r3])
+        }
+        stream.buf = writeBuf(stream.buf, digits[r2])
+        stream.buf = writeBuf(stream.buf, digits[r1])
+}
+
+// WriteInt32 write int32 to stream
+func (stream *Stream) WriteInt32(nval int32) {
+        var val uint32
+        if nval < 0 {
+                val = uint32(-nval)
+                stream.buf = append(stream.buf, '-')
+        } else {
+                val = uint32(nval)
+        }
+        stream.WriteUint32(val)
+}
+
+// WriteUint64 write uint64 to stream
+func (stream *Stream) WriteUint64(val uint64) {
+        q1 := val / 1000
+        if q1 == 0 {
+                stream.buf = writeFirstBuf(stream.buf, digits[val])
+                return
+        }
+        r1 := val - q1*1000
+        q2 := q1 / 1000
+        if q2 == 0 {
+                stream.buf = writeFirstBuf(stream.buf, digits[q1])
+                stream.buf = writeBuf(stream.buf, digits[r1])
+                return
+        }
+        r2 := q1 - q2*1000
+        q3 := q2 / 1000
+        if q3 == 0 {
+                stream.buf = writeFirstBuf(stream.buf, digits[q2])
+                stream.buf = writeBuf(stream.buf, digits[r2])
+                stream.buf = writeBuf(stream.buf, digits[r1])
+                return
+        }
+        r3 := q2 - q3*1000
+        q4 := q3 / 1000
+        if q4 == 0 {
+                stream.buf = writeFirstBuf(stream.buf, digits[q3])
+                stream.buf = writeBuf(stream.buf, digits[r3])
+                stream.buf = writeBuf(stream.buf, digits[r2])
+                stream.buf = writeBuf(stream.buf, digits[r1])
+                return
+        }
+        r4 := q3 - q4*1000
+        q5 := q4 / 1000
+        if q5 == 0 {
+                stream.buf = writeFirstBuf(stream.buf, digits[q4])
+                stream.buf = writeBuf(stream.buf, digits[r4])
+                stream.buf = writeBuf(stream.buf, digits[r3])
+                stream.buf = writeBuf(stream.buf, digits[r2])
+                stream.buf = writeBuf(stream.buf, digits[r1])
+                return
+        }
+        r5 := q4 - q5*1000
+        q6 := q5 / 1000
+        if q6 == 0 {
+                stream.buf = writeFirstBuf(stream.buf, digits[q5])
+        } else {
+                stream.buf = writeFirstBuf(stream.buf, digits[q6])
+                r6 := q5 - q6*1000
+                stream.buf = writeBuf(stream.buf, digits[r6])
+        }
+        stream.buf = writeBuf(stream.buf, digits[r5])
+        stream.buf = writeBuf(stream.buf, digits[r4])
+        stream.buf = writeBuf(stream.buf, digits[r3])
+        stream.buf = writeBuf(stream.buf, digits[r2])
+        stream.buf = writeBuf(stream.buf, digits[r1])
+}
+
+// WriteInt64 write int64 to stream
+func (stream *Stream) WriteInt64(nval int64) {
+        var val uint64
+        if nval < 0 {
+                val = uint64(-nval)
+                stream.buf = append(stream.buf, '-')
+        } else {
+                val = uint64(nval)
+        }
+        stream.WriteUint64(val)
+}
+
+// WriteInt write int to stream
+func (stream *Stream) WriteInt(val int) {
+        stream.WriteInt64(int64(val))
+}
+
+// WriteUint write uint to stream
+func (stream *Stream) WriteUint(val uint) {
+        stream.WriteUint64(uint64(val))
+}
diff --git a/vendor/github.com/json-iterator/go/stream_str.go b/vendor/github.com/json-iterator/go/stream_str.go
new file mode 100644
index 0000000..54c2ba0
--- /dev/null
+++ b/vendor/github.com/json-iterator/go/stream_str.go
@@ -0,0 +1,372 @@
+package jsoniter
+
+import (
+        "unicode/utf8"
+)
+
+// htmlSafeSet holds the value true if the ASCII character with the given
+// array position can be safely represented inside a JSON string, embedded
+// inside of HTML <script> tags, without any additional escaping.
+//
+// All values are true except for the ASCII control characters (0-31), the
+// double quote ("), the backslash character ("\"), HTML opening and closing
+// tags ("<" and ">"), and the ampersand ("&").
+var htmlSafeSet = [utf8.RuneSelf]bool{
+        ' ':      true,
+        '!':      true,
+        '"':      false,
+        '#':      true,
+        '$':      true,
+        '%':      true,
+        '&':      false,
+        '\'':     true,
+        '(':      true,
+        ')':      true,
+        '*':      true,
+        '+':      true,
+        ',':      true,
+        '-':      true,
+        '.':      true,
+        '/':      true,
+        '0':      true,
+        '1':      true,
+        '2':      true,
+        '3':      true,
+        '4':      true,
+        '5':      true,
+        '6':      true,
+        '7':      true,
+        '8':      true,
+        '9':      true,
+        ':':      true,
+        ';':      true,
+        '<':      false,
+        '=':      true,
+        '>':      false,
+        '?':      true,
+        '@':      true,
+        'A':      true,
+        'B':      true,
+        'C':      true,
+        'D':      true,
+        'E':      true,
+        'F':      true,
+        'G':      true,
+        'H':      true,
+        'I':      true,
+        'J':      true,
+        'K':      true,
+        'L':      true,
+        'M':      true,
+        'N':      true,
+        'O':      true,
+        'P':      true,
+        'Q':      true,
+        'R':      true,
+        'S':      true,
+        'T':      true,
+        'U':      true,
+        'V':      true,
+        'W':      true,
+        'X':      true,
+        'Y':      true,
+        'Z':      true,
+        '[':      true,
+        '\\':     false,
+        ']':      true,
+        '^':      true,
+        '_':      true,
+        '`':      true,
+        'a':      true,
+        'b':      true,
+        'c':      true,
+        'd':      true,
+        'e':      true,
+        'f':      true,
+        'g':      true,
+        'h':      true,
+        'i':      true,
+        'j':      true,
+        'k':      true,
+        'l':      true,
+        'm':      true,
+        'n':      true,
+        'o':      true,
+        'p':      true,
+        'q':      true,
+        'r':      true,
+        's':      true,
+        't':      true,
+        'u':      true,
+        'v':      true,
+        'w':      true,
+        'x':      true,
+        'y':      true,
+        'z':      true,
+        '{':      true,
+        '|':      true,
+        '}':      true,
+        '~':      true,
+        '\u007f': true,
+}
+
+// safeSet holds the value true if the ASCII character with the given array
+// position can be represented inside a JSON string without any further
+// escaping.
+//
+// All values are true except for the ASCII control characters (0-31), the
+// double quote ("), and the backslash character ("\").
+var safeSet = [utf8.RuneSelf]bool{
+        ' ':      true,
+        '!':      true,
+        '"':      false,
+        '#':      true,
+        '$':      true,
+        '%':      true,
+        '&':      true,
+        '\'':     true,
+        '(':      true,
+        ')':      true,
+        '*':      true,
+        '+':      true,
+        ',':      true,
+        '-':      true,
+        '.':      true,
+        '/':      true,
+        '0':      true,
+        '1':      true,
+        '2':      true,
+        '3':      true,
+        '4':      true,
+        '5':      true,
+        '6':      true,
+        '7':      true,
+        '8':      true,
+        '9':      true,
+        ':':      true,
+        ';':      true,
+        '<':      true,
+        '=':      true,
+        '>':      true,
+        '?':      true,
+        '@':      true,
+        'A':      true,
+        'B':      true,
+        'C':      true,
+        'D':      true,
+        'E':      true,
+        'F':      true,
+        'G':      true,
+        'H':      true,
+        'I':      true,
+        'J':      true,
+        'K':      true,
+        'L':      true,
+        'M':      true,
+        'N':      true,
+        'O':      true,
+        'P':      true,
+        'Q':      true,
+        'R':      true,
+        'S':      true,
+        'T':      true,
+        'U':      true,
+        'V':      true,
+        'W':      true,
+        'X':      true,
+        'Y':      true,
+        'Z':      true,
+        '[':      true,
+        '\\':     false,
+        ']':      true,
+        '^':      true,
+        '_':      true,
+        '`':      true,
+        'a':      true,
+        'b':      true,
+        'c':      true,
+        'd':      true,
+        'e':      true,
+        'f':      true,
+        'g':      true,
+        'h':      true,
+        'i':      true,
+        'j':      true,
+        'k':      true,
+        'l':      true,
+        'm':      true,
+        'n':      true,
+        'o':      true,
+        'p':      true,
+        'q':      true,
+        'r':      true,
+        's':      true,
+        't':      true,
+        'u':      true,
+        'v':      true,
+        'w':      true,
+        'x':      true,
+        'y':      true,
+        'z':      true,
+        '{':      true,
+        '|':      true,
+        '}':      true,
+        '~':      true,
+        '\u007f': true,
+}
+
+var hex = "0123456789abcdef"
+
+// WriteStringWithHTMLEscaped write string to stream with html special characters escaped
+func (stream *Stream) WriteStringWithHTMLEscaped(s string) {
+        valLen := len(s)
+        stream.buf = append(stream.buf, '"')
+        // write string, the fast path, without utf8 and escape support
+        i := 0
+        for ; i < valLen; i++ {
+                c := s[i]
+                if c < utf8.RuneSelf && htmlSafeSet[c] {
+                        stream.buf = append(stream.buf, c)
+                } else {
+                        break
+                }
+        }
+        if i == valLen {
+                stream.buf = append(stream.buf, '"')
+                return
+        }
+        writeStringSlowPathWithHTMLEscaped(stream, i, s, valLen)
+}
+
+func writeStringSlowPathWithHTMLEscaped(stream *Stream, i int, s string, valLen int) {
+        start := i
+        // for the remaining parts, we process them char by char
+        for i < valLen {
+                if b := s[i]; b < utf8.RuneSelf {
+                        if htmlSafeSet[b] {
+                                i++
+                                continue
+                        }
+                        if start < i {
+                                stream.WriteRaw(s[start:i])
+                        }
+                        switch b {
+                        case '\\', '"':
+                                stream.writeTwoBytes('\\', b)
+                        case '\n':
+                                stream.writeTwoBytes('\\', 'n')
+                        case '\r':
+                                stream.writeTwoBytes('\\', 'r')
+                        case '\t':
+                                stream.writeTwoBytes('\\', 't')
+                        default:
+                                // This encodes bytes < 0x20 except for \t, \n and \r.
+                                // If escapeHTML is set, it also escapes <, >, and &
+                                // because they can lead to security holes when
+                                // user-controlled strings are rendered into JSON
+                                // and served to some browsers.
+                                stream.WriteRaw(`\u00`)
+                                stream.writeTwoBytes(hex[b>>4], hex[b&0xF])
+                        }
+                        i++
+                        start = i
+                        continue
+                }
+                c, size := utf8.DecodeRuneInString(s[i:])
+                if c == utf8.RuneError && size == 1 {
+                        if start < i {
+                                stream.WriteRaw(s[start:i])
+                        }
+                        stream.WriteRaw(`\ufffd`)
+                        i++
+                        start = i
+                        continue
+                }
+                // U+2028 is LINE SEPARATOR.
+                // U+2029 is PARAGRAPH SEPARATOR.
+                // They are both technically valid characters in JSON strings,
+                // but don't work in JSONP, which has to be evaluated as JavaScript,
+                // and can lead to security holes there. It is valid JSON to
+                // escape them, so we do so unconditionally.
+                // See http://timelessrepo.com/json-isnt-a-javascript-subset for discussion.
+                if c == '\u2028' || c == '\u2029' {
+                        if start < i {
+                                stream.WriteRaw(s[start:i])
+                        }
+                        stream.WriteRaw(`\u202`)
+                        stream.writeByte(hex[c&0xF])
+                        i += size
+                        start = i
+                        continue
+                }
+                i += size
+        }
+        if start < len(s) {
+                stream.WriteRaw(s[start:])
+        }
+        stream.writeByte('"')
+}
+
+// WriteString write string to stream without html escape
+func (stream *Stream) WriteString(s string) {
+        valLen := len(s)
+        stream.buf = append(stream.buf, '"')
+        // write string, the fast path, without utf8 and escape support
+        i := 0
+        for ; i < valLen; i++ {
+                c := s[i]
+                if c > 31 && c != '"' && c != '\\' {
+                        stream.buf = append(stream.buf, c)
+                } else {
+                        break
+                }
+        }
+        if i == valLen {
+                stream.buf = append(stream.buf, '"')
+                return
+        }
+        writeStringSlowPath(stream, i, s, valLen)
+}
+
+func writeStringSlowPath(stream *Stream, i int, s string, valLen int) {
+        start := i
+        // for the remaining parts, we process them char by char
+        for i < valLen {
+                if b := s[i]; b < utf8.RuneSelf {
+                        if safeSet[b] {
+                                i++
+                                continue
+                        }
+                        if start < i {
+                                stream.WriteRaw(s[start:i])
+                        }
+                        switch b {
+                        case '\\', '"':
+                                stream.writeTwoBytes('\\', b)
+                        case '\n':
+                                stream.writeTwoBytes('\\', 'n')
+                        case '\r':
+                                stream.writeTwoBytes('\\', 'r')
+                        case '\t':
+                                stream.writeTwoBytes('\\', 't')
+                        default:
+                                // This encodes bytes < 0x20 except for \t, \n and \r.
+                                // If escapeHTML is set, it also escapes <, >, and &
+                                // because they can lead to security holes when
+                                // user-controlled strings are rendered into JSON
+                                // and served to some browsers.
+                                stream.WriteRaw(`\u00`)
+                                stream.writeTwoBytes(hex[b>>4], hex[b&0xF])
+                        }
+                        i++
+                        start = i
+                        continue
+                }
+                i++
+                continue
+        }
+        if start < len(s) {
+                stream.WriteRaw(s[start:])
+        }
+        stream.writeByte('"')
+}
diff --git a/vendor/github.com/json-iterator/go/test.sh b/vendor/github.com/json-iterator/go/test.sh
new file mode 100644
index 0000000..f4e7c0b
--- /dev/null
+++ b/vendor/github.com/json-iterator/go/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/json-iterator/go $d
+    if [ -f profile.out ]; then
+        cat profile.out >> coverage.txt
+        rm profile.out
+    fi
+done