Merge pull request #188 from goccy/feature/add-benchmark-ffjson

Add a new benchmark target ( ffjson )

README.md

@@ -60,13 +60,26 @@ Replace import statement from `encoding/json` to `github.com/goccy/go-json`
 | [json-iterator/go](https://github.com/json-iterator/go) | yes | yes | partial |
 | [easyjson](https://github.com/mailru/easyjson) | yes | yes |  no |
 | [gojay](https://github.com/francoispqt/gojay) | yes | yes |  no |
-| [segmentio/encoding/json](https://github.com/segmentio/encoding/tree/master/json) | yes | yes | yes |
+| [segmentio/encoding/json](https://github.com/segmentio/encoding/tree/master/json) | yes | yes | partial |
 | [jettison](https://github.com/wI2L/jettison) | yes | no | no |
 | [simdjson-go](https://github.com/minio/simdjson-go) | no | yes | no |
 | goccy/go-json | yes | yes | yes |
 
-- `json-iterator/go` isn't compatible with `encoding/json` in many ways, but it hasn't been supported for a long time.
+- `json-iterator/go` isn't compatible with `encoding/json` in many ways (e.g. https://github.com/json-iterator/go/issues/229 ), but it hasn't been supported for a long time.
+- `segmentio/encoding/json` is well supported for encoders, but some are not supported for decoder APIs such as `Token` ( streaming decode )
 
+## Other libraries
+
+- [jingo](https://github.com/bet365/jingo)
+
+I tried the benchmark but it didn't work.
+Also, it seems to panic when it receives an unexpected value because there is no error handling...
+
+- [ffjson](https://github.com/pquerna/ffjson)
+
+Benchmarking gave very slow results.
+It seems that it is assumed that the user will use the buffer pool properly.
+Also, development seems to have already stopped
 
 # Benchmarks
 

benchmarks/encode_test.go

@@ -8,6 +8,7 @@ import (
 	gojay "github.com/francoispqt/gojay"
 	gojson "github.com/goccy/go-json"
 	jsoniter "github.com/json-iterator/go"
+	"github.com/pquerna/ffjson/ffjson"
 	segmentiojson "github.com/segmentio/encoding/json"
 	"github.com/wI2L/jettison"
 )
@@ -21,6 +22,15 @@ func Benchmark_Encode_SmallStruct_EncodingJson(b *testing.B) {
 	}
 }
 
+func Benchmark_Encode_SmallStruct_FFJson(b *testing.B) {
+	b.ReportAllocs()
+	for i := 0; i < b.N; i++ {
+		if _, err := ffjson.Marshal(NewSmallPayloadFFJson()); err != nil {
+			b.Fatal(err)
+		}
+	}
+}
+
 func Benchmark_Encode_SmallStruct_JsonIter(b *testing.B) {
 	var json = jsoniter.ConfigCompatibleWithStandardLibrary
 	b.ReportAllocs()
@@ -105,6 +115,16 @@ func Benchmark_Encode_SmallStructCached_EncodingJson(b *testing.B) {
 	}
 }
 
+func Benchmark_Encode_SmallStructCached_FFJson(b *testing.B) {
+	cached := NewSmallPayloadFFJson()
+	b.ReportAllocs()
+	for i := 0; i < b.N; i++ {
+		if _, err := ffjson.Marshal(cached); err != nil {
+			b.Fatal(err)
+		}
+	}
+}
+
 func Benchmark_Encode_SmallStructCached_JsonIter(b *testing.B) {
 	var json = jsoniter.ConfigCompatibleWithStandardLibrary
 	cached := NewSmallPayload()

benchmarks/go.mod

@@ -7,6 +7,7 @@ require (
 	github.com/goccy/go-json v0.0.0-00010101000000-000000000000
 	github.com/json-iterator/go v1.1.9
 	github.com/mailru/easyjson v0.0.0-20190312143242-1de009706dbe
+	github.com/pquerna/ffjson v0.0.0-20190930134022-aa0246cd15f7
 	github.com/segmentio/encoding v0.2.4
 	github.com/valyala/fastjson v1.6.3
 	github.com/wI2L/jettison v0.7.1

benchmarks/go.sum

@@ -55,6 +55,7 @@ github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORN
 github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
 github.com/kr/pty v1.1.3/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
 github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
+github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
 github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
 github.com/lunixbochs/vtclean v1.0.0/go.mod h1:pHhQNgMf3btfWnGBVipUOjRYhoOsdGqdm/+2c2E2WMI=
 github.com/mailru/easyjson v0.0.0-20190312143242-1de009706dbe h1:W/GaMY0y69G4cFlmsC6B9sbuo2fP8OFP1ABjt4kPz+w=
@@ -69,11 +70,14 @@ github.com/modern-go/reflect2 v1.0.1 h1:9f412s+6RmYXLWZSEzVVgPGK7C2PphHj5RJrvfx9
 github.com/modern-go/reflect2 v1.0.1/go.mod h1:bx2lNnkwVCuqBIxFjflWJWanXIb3RllmbCylyMrvgv0=
 github.com/neelance/astrewrite v0.0.0-20160511093645-99348263ae86/go.mod h1:kHJEU3ofeGjhHklVoIGuVj85JJwZ6kWPaJwCIxgnFmo=
 github.com/neelance/sourcemap v0.0.0-20151028013722-8c68805598ab/go.mod h1:Qr6/a/Q4r9LP1IltGz7tA7iOK1WonHEYhu1HRBA7ZiM=
+github.com/niemeyer/pretty v0.0.0-20200227124842-a10e7caefd8e h1:fD57ERR4JtEqsWbfPhv4DMiApHyliiK5xCTNVSPiaAs=
 github.com/niemeyer/pretty v0.0.0-20200227124842-a10e7caefd8e/go.mod h1:zD1mROLANZcx1PVRCS0qkT7pwLkGfwJo4zjcN/Tysno=
 github.com/openzipkin/zipkin-go v0.1.1/go.mod h1:NtoC/o8u3JlF1lSlyPNswIbeQH9bJTmOf0Erfk+hxe8=
 github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/pquerna/ffjson v0.0.0-20190930134022-aa0246cd15f7 h1:xoIK0ctDddBMnc74udxJYBqlo9Ylnsp1waqjLsnef20=
+github.com/pquerna/ffjson v0.0.0-20190930134022-aa0246cd15f7/go.mod h1:YARuvh7BUWHNhzDq2OM5tzR2RiCcN2D7sapiKyCel/M=
 github.com/prometheus/client_golang v0.8.0/go.mod h1:7SWBe2y4D6OKWSNQJUaRYU/AaXPKyh/dDVn+NZz0KFw=
 github.com/prometheus/client_model v0.0.0-20180712105110-5c3871d89910/go.mod h1:MbSGuTsp3dbXC40dX6PRTWyKYBIrTGTE9sqQNg2J8bo=
 github.com/prometheus/common v0.0.0-20180801064454-c7de2306084e/go.mod h1:daVV7qP5qjZbuso7PdcryaAu0sAZbrN9i7WWcTMWvro=
@@ -111,6 +115,7 @@ github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+
 github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
 github.com/stretchr/testify v1.3.0 h1:TivCn/peBQ7UY8ooIcPgZFpTNSz0Q2U6UrFlUfqbe0Q=
 github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
+github.com/stretchr/testify v1.5.1 h1:nOGnQDM7FYENwehXlg/kFVnos3rEvtKTjRvOWSzb6H4=
 github.com/stretchr/testify v1.5.1/go.mod h1:5W2xD1RspED5o8YsWQXVCued0rvSQ+mT+I5cxcmMvtA=
 github.com/tarm/serial v0.0.0-20180830185346-98f6abe2eb07/go.mod h1:kDXzergiv9cbyO7IOYJZWg1U88JhDg3PB6klq9Hg2pA=
 github.com/valyala/fastjson v1.6.3 h1:tAKFnnwmeMGPbwJ7IwxcTPCNr3uIzoIj3/Fh90ra4xc=
@@ -176,10 +181,12 @@ google.golang.org/grpc v1.16.0/go.mod h1:0JHn/cJsOMiMfNA9+DeHDlAU7KAAB5GDlYFpa9M
 google.golang.org/grpc v1.17.0/go.mod h1:6QZJwpn2B+Zp71q/5VxRsJ6NXXVCE5NRUHRo+f3cWCs=
 google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/check.v1 v1.0.0-20200227125254-8fa46927fb4f h1:BLraFXnmrev5lT+xlilqcH8XK9/i0At2xKjWk4p6zsU=
 gopkg.in/check.v1 v1.0.0-20200227125254-8fa46927fb4f/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/inf.v0 v0.9.1/go.mod h1:cWUDdTG/fYaXco+Dcufb5Vnc6Gp2YChqWtbxRZE0mXw=
 gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.2.8 h1:obN1ZagJSUGI0Ek/LBmuj4SNLPfIny3KsKFopxRdj10=
 gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 grpc.go4.org v0.0.0-20170609214715-11d0a25b4919/go.mod h1:77eQGdRu53HpSqPFJFmuJdjuHRquDANNeA4x7B8WQ9o=
 honnef.co/go/tools v0.0.0-20180728063816-88497007e858/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=

benchmarks/small_payload.go

@@ -4,6 +4,7 @@ import "github.com/francoispqt/gojay"
 
 var SmallFixture = []byte(`{"st": 1,"sid": 486,"tt": "active","gr": 0,"uuid": "de305d54-75b4-431b-adb2-eb6b9e546014","ip": "127.0.0.1","ua": "user_agent","tz": -6,"v": 1}`)
 
+// ffjson:skip
 type SmallPayload struct {
 	St   int
 	Sid  int
@@ -16,6 +17,18 @@ type SmallPayload struct {
 	V    int
 }
 
+type SmallPayloadFFJson struct {
+	St   int
+	Sid  int
+	Tt   string
+	Gr   int
+	Uuid string
+	Ip   string
+	Ua   string
+	Tz   int
+	V    int
+}
+
 //easyjson:json
 type SmallPayloadEasyJson struct {
 	St   int
@@ -100,3 +113,17 @@ func NewSmallPayloadEasyJson() *SmallPayloadEasyJson {
 		V:    6,
 	}
 }
+
+func NewSmallPayloadFFJson() *SmallPayloadFFJson {
+	return &SmallPayloadFFJson{
+		St:   1,
+		Sid:  2,
+		Tt:   "TestString",
+		Gr:   4,
+		Uuid: "8f9a65eb-4807-4d57-b6e0-bda5d62f1429",
+		Ip:   "127.0.0.1",
+		Ua:   "Mozilla",
+		Tz:   8,
+		V:    6,
+	}
+}

benchmarks/small_payload_ffjson.go

@@ -0,0 +1,608 @@
+// Code generated by ffjson <https://github.com/pquerna/ffjson>. DO NOT EDIT.
+// source: small_payload.go
+
+package benchmark
+
+import (
+	"bytes"
+	"fmt"
+
+	fflib "github.com/pquerna/ffjson/fflib/v1"
+)
+
+// MarshalJSON marshal bytes to json - template
+func (j *SmallPayloadFFJson) MarshalJSON() ([]byte, error) {
+	var buf fflib.Buffer
+	if j == nil {
+		buf.WriteString("null")
+		return buf.Bytes(), nil
+	}
+	err := j.MarshalJSONBuf(&buf)
+	if err != nil {
+		return nil, err
+	}
+	return buf.Bytes(), nil
+}
+
+// MarshalJSONBuf marshal buff to json - template
+func (j *SmallPayloadFFJson) MarshalJSONBuf(buf fflib.EncodingBuffer) error {
+	if j == nil {
+		buf.WriteString("null")
+		return nil
+	}
+	var err error
+	var obj []byte
+	_ = obj
+	_ = err
+	buf.WriteString(`{"St":`)
+	fflib.FormatBits2(buf, uint64(j.St), 10, j.St < 0)
+	buf.WriteString(`,"Sid":`)
+	fflib.FormatBits2(buf, uint64(j.Sid), 10, j.Sid < 0)
+	buf.WriteString(`,"Tt":`)
+	fflib.WriteJsonString(buf, string(j.Tt))
+	buf.WriteString(`,"Gr":`)
+	fflib.FormatBits2(buf, uint64(j.Gr), 10, j.Gr < 0)
+	buf.WriteString(`,"Uuid":`)
+	fflib.WriteJsonString(buf, string(j.Uuid))
+	buf.WriteString(`,"Ip":`)
+	fflib.WriteJsonString(buf, string(j.Ip))
+	buf.WriteString(`,"Ua":`)
+	fflib.WriteJsonString(buf, string(j.Ua))
+	buf.WriteString(`,"Tz":`)
+	fflib.FormatBits2(buf, uint64(j.Tz), 10, j.Tz < 0)
+	buf.WriteString(`,"V":`)
+	fflib.FormatBits2(buf, uint64(j.V), 10, j.V < 0)
+	buf.WriteByte('}')
+	return nil
+}
+
+const (
+	ffjtSmallPayloadFFJsonbase = iota
+	ffjtSmallPayloadFFJsonnosuchkey
+
+	ffjtSmallPayloadFFJsonSt
+
+	ffjtSmallPayloadFFJsonSid
+
+	ffjtSmallPayloadFFJsonTt
+
+	ffjtSmallPayloadFFJsonGr
+
+	ffjtSmallPayloadFFJsonUuid
+
+	ffjtSmallPayloadFFJsonIp
+
+	ffjtSmallPayloadFFJsonUa
+
+	ffjtSmallPayloadFFJsonTz
+
+	ffjtSmallPayloadFFJsonV
+)
+
+var ffjKeySmallPayloadFFJsonSt = []byte("St")
+
+var ffjKeySmallPayloadFFJsonSid = []byte("Sid")
+
+var ffjKeySmallPayloadFFJsonTt = []byte("Tt")
+
+var ffjKeySmallPayloadFFJsonGr = []byte("Gr")
+
+var ffjKeySmallPayloadFFJsonUuid = []byte("Uuid")
+
+var ffjKeySmallPayloadFFJsonIp = []byte("Ip")
+
+var ffjKeySmallPayloadFFJsonUa = []byte("Ua")
+
+var ffjKeySmallPayloadFFJsonTz = []byte("Tz")
+
+var ffjKeySmallPayloadFFJsonV = []byte("V")
+
+// UnmarshalJSON umarshall json - template of ffjson
+func (j *SmallPayloadFFJson) UnmarshalJSON(input []byte) error {
+	fs := fflib.NewFFLexer(input)
+	return j.UnmarshalJSONFFLexer(fs, fflib.FFParse_map_start)
+}
+
+// UnmarshalJSONFFLexer fast json unmarshall - template ffjson
+func (j *SmallPayloadFFJson) UnmarshalJSONFFLexer(fs *fflib.FFLexer, state fflib.FFParseState) error {
+	var err error
+	currentKey := ffjtSmallPayloadFFJsonbase
+	_ = currentKey
+	tok := fflib.FFTok_init
+	wantedTok := fflib.FFTok_init
+
+mainparse:
+	for {
+		tok = fs.Scan()
+		//	println(fmt.Sprintf("debug: tok: %v  state: %v", tok, state))
+		if tok == fflib.FFTok_error {
+			goto tokerror
+		}
+
+		switch state {
+
+		case fflib.FFParse_map_start:
+			if tok != fflib.FFTok_left_bracket {
+				wantedTok = fflib.FFTok_left_bracket
+				goto wrongtokenerror
+			}
+			state = fflib.FFParse_want_key
+			continue
+
+		case fflib.FFParse_after_value:
+			if tok == fflib.FFTok_comma {
+				state = fflib.FFParse_want_key
+			} else if tok == fflib.FFTok_right_bracket {
+				goto done
+			} else {
+				wantedTok = fflib.FFTok_comma
+				goto wrongtokenerror
+			}
+
+		case fflib.FFParse_want_key:
+			// json {} ended. goto exit. woo.
+			if tok == fflib.FFTok_right_bracket {
+				goto done
+			}
+			if tok != fflib.FFTok_string {
+				wantedTok = fflib.FFTok_string
+				goto wrongtokenerror
+			}
+
+			kn := fs.Output.Bytes()
+			if len(kn) <= 0 {
+				// "" case. hrm.
+				currentKey = ffjtSmallPayloadFFJsonnosuchkey
+				state = fflib.FFParse_want_colon
+				goto mainparse
+			} else {
+				switch kn[0] {
+
+				case 'G':
+
+					if bytes.Equal(ffjKeySmallPayloadFFJsonGr, kn) {
+						currentKey = ffjtSmallPayloadFFJsonGr
+						state = fflib.FFParse_want_colon
+						goto mainparse
+					}
+
+				case 'I':
+
+					if bytes.Equal(ffjKeySmallPayloadFFJsonIp, kn) {
+						currentKey = ffjtSmallPayloadFFJsonIp
+						state = fflib.FFParse_want_colon
+						goto mainparse
+					}
+
+				case 'S':
+
+					if bytes.Equal(ffjKeySmallPayloadFFJsonSt, kn) {
+						currentKey = ffjtSmallPayloadFFJsonSt
+						state = fflib.FFParse_want_colon
+						goto mainparse
+
+					} else if bytes.Equal(ffjKeySmallPayloadFFJsonSid, kn) {
+						currentKey = ffjtSmallPayloadFFJsonSid
+						state = fflib.FFParse_want_colon
+						goto mainparse
+					}
+
+				case 'T':
+
+					if bytes.Equal(ffjKeySmallPayloadFFJsonTt, kn) {
+						currentKey = ffjtSmallPayloadFFJsonTt
+						state = fflib.FFParse_want_colon
+						goto mainparse
+
+					} else if bytes.Equal(ffjKeySmallPayloadFFJsonTz, kn) {
+						currentKey = ffjtSmallPayloadFFJsonTz
+						state = fflib.FFParse_want_colon
+						goto mainparse
+					}
+
+				case 'U':
+
+					if bytes.Equal(ffjKeySmallPayloadFFJsonUuid, kn) {
+						currentKey = ffjtSmallPayloadFFJsonUuid
+						state = fflib.FFParse_want_colon
+						goto mainparse
+
+					} else if bytes.Equal(ffjKeySmallPayloadFFJsonUa, kn) {
+						currentKey = ffjtSmallPayloadFFJsonUa
+						state = fflib.FFParse_want_colon
+						goto mainparse
+					}
+
+				case 'V':
+
+					if bytes.Equal(ffjKeySmallPayloadFFJsonV, kn) {
+						currentKey = ffjtSmallPayloadFFJsonV
+						state = fflib.FFParse_want_colon
+						goto mainparse
+					}
+
+				}
+
+				if fflib.SimpleLetterEqualFold(ffjKeySmallPayloadFFJsonV, kn) {
+					currentKey = ffjtSmallPayloadFFJsonV
+					state = fflib.FFParse_want_colon
+					goto mainparse
+				}
+
+				if fflib.SimpleLetterEqualFold(ffjKeySmallPayloadFFJsonTz, kn) {
+					currentKey = ffjtSmallPayloadFFJsonTz
+					state = fflib.FFParse_want_colon
+					goto mainparse
+				}
+
+				if fflib.SimpleLetterEqualFold(ffjKeySmallPayloadFFJsonUa, kn) {
+					currentKey = ffjtSmallPayloadFFJsonUa
+					state = fflib.FFParse_want_colon
+					goto mainparse
+				}
+
+				if fflib.SimpleLetterEqualFold(ffjKeySmallPayloadFFJsonIp, kn) {
+					currentKey = ffjtSmallPayloadFFJsonIp
+					state = fflib.FFParse_want_colon
+					goto mainparse
+				}
+
+				if fflib.SimpleLetterEqualFold(ffjKeySmallPayloadFFJsonUuid, kn) {
+					currentKey = ffjtSmallPayloadFFJsonUuid
+					state = fflib.FFParse_want_colon
+					goto mainparse
+				}
+
+				if fflib.SimpleLetterEqualFold(ffjKeySmallPayloadFFJsonGr, kn) {
+					currentKey = ffjtSmallPayloadFFJsonGr
+					state = fflib.FFParse_want_colon
+					goto mainparse
+				}
+
+				if fflib.SimpleLetterEqualFold(ffjKeySmallPayloadFFJsonTt, kn) {
+					currentKey = ffjtSmallPayloadFFJsonTt
+					state = fflib.FFParse_want_colon
+					goto mainparse
+				}
+
+				if fflib.EqualFoldRight(ffjKeySmallPayloadFFJsonSid, kn) {
+					currentKey = ffjtSmallPayloadFFJsonSid
+					state = fflib.FFParse_want_colon
+					goto mainparse
+				}
+
+				if fflib.EqualFoldRight(ffjKeySmallPayloadFFJsonSt, kn) {
+					currentKey = ffjtSmallPayloadFFJsonSt
+					state = fflib.FFParse_want_colon
+					goto mainparse
+				}
+
+				currentKey = ffjtSmallPayloadFFJsonnosuchkey
+				state = fflib.FFParse_want_colon
+				goto mainparse
+			}
+
+		case fflib.FFParse_want_colon:
+			if tok != fflib.FFTok_colon {
+				wantedTok = fflib.FFTok_colon
+				goto wrongtokenerror
+			}
+			state = fflib.FFParse_want_value
+			continue
+		case fflib.FFParse_want_value:
+
+			if tok == fflib.FFTok_left_brace || tok == fflib.FFTok_left_bracket || tok == fflib.FFTok_integer || tok == fflib.FFTok_double || tok == fflib.FFTok_string || tok == fflib.FFTok_bool || tok == fflib.FFTok_null {
+				switch currentKey {
+
+				case ffjtSmallPayloadFFJsonSt:
+					goto handle_St
+
+				case ffjtSmallPayloadFFJsonSid:
+					goto handle_Sid
+
+				case ffjtSmallPayloadFFJsonTt:
+					goto handle_Tt
+
+				case ffjtSmallPayloadFFJsonGr:
+					goto handle_Gr
+
+				case ffjtSmallPayloadFFJsonUuid:
+					goto handle_Uuid
+
+				case ffjtSmallPayloadFFJsonIp:
+					goto handle_Ip
+
+				case ffjtSmallPayloadFFJsonUa:
+					goto handle_Ua
+
+				case ffjtSmallPayloadFFJsonTz:
+					goto handle_Tz
+
+				case ffjtSmallPayloadFFJsonV:
+					goto handle_V
+
+				case ffjtSmallPayloadFFJsonnosuchkey:
+					err = fs.SkipField(tok)
+					if err != nil {
+						return fs.WrapErr(err)
+					}
+					state = fflib.FFParse_after_value
+					goto mainparse
+				}
+			} else {
+				goto wantedvalue
+			}
+		}
+	}
+
+handle_St:
+
+	/* handler: j.St type=int kind=int quoted=false*/
+
+	{
+		if tok != fflib.FFTok_integer && tok != fflib.FFTok_null {
+			return fs.WrapErr(fmt.Errorf("cannot unmarshal %s into Go value for int", tok))
+		}
+	}
+
+	{
+
+		if tok == fflib.FFTok_null {
+
+		} else {
+
+			tval, err := fflib.ParseInt(fs.Output.Bytes(), 10, 64)
+
+			if err != nil {
+				return fs.WrapErr(err)
+			}
+
+			j.St = int(tval)
+
+		}
+	}
+
+	state = fflib.FFParse_after_value
+	goto mainparse
+
+handle_Sid:
+
+	/* handler: j.Sid type=int kind=int quoted=false*/
+
+	{
+		if tok != fflib.FFTok_integer && tok != fflib.FFTok_null {
+			return fs.WrapErr(fmt.Errorf("cannot unmarshal %s into Go value for int", tok))
+		}
+	}
+
+	{
+
+		if tok == fflib.FFTok_null {
+
+		} else {
+
+			tval, err := fflib.ParseInt(fs.Output.Bytes(), 10, 64)
+
+			if err != nil {
+				return fs.WrapErr(err)
+			}
+
+			j.Sid = int(tval)
+
+		}
+	}
+
+	state = fflib.FFParse_after_value
+	goto mainparse
+
+handle_Tt:
+
+	/* handler: j.Tt type=string kind=string quoted=false*/
+
+	{
+
+		{
+			if tok != fflib.FFTok_string && tok != fflib.FFTok_null {
+				return fs.WrapErr(fmt.Errorf("cannot unmarshal %s into Go value for string", tok))
+			}
+		}
+
+		if tok == fflib.FFTok_null {
+
+		} else {
+
+			outBuf := fs.Output.Bytes()
+
+			j.Tt = string(string(outBuf))
+
+		}
+	}
+
+	state = fflib.FFParse_after_value
+	goto mainparse
+
+handle_Gr:
+
+	/* handler: j.Gr type=int kind=int quoted=false*/
+
+	{
+		if tok != fflib.FFTok_integer && tok != fflib.FFTok_null {
+			return fs.WrapErr(fmt.Errorf("cannot unmarshal %s into Go value for int", tok))
+		}
+	}
+
+	{
+
+		if tok == fflib.FFTok_null {
+
+		} else {
+
+			tval, err := fflib.ParseInt(fs.Output.Bytes(), 10, 64)
+
+			if err != nil {
+				return fs.WrapErr(err)
+			}
+
+			j.Gr = int(tval)
+
+		}
+	}
+
+	state = fflib.FFParse_after_value
+	goto mainparse
+
+handle_Uuid:
+
+	/* handler: j.Uuid type=string kind=string quoted=false*/
+
+	{
+
+		{
+			if tok != fflib.FFTok_string && tok != fflib.FFTok_null {
+				return fs.WrapErr(fmt.Errorf("cannot unmarshal %s into Go value for string", tok))
+			}
+		}
+
+		if tok == fflib.FFTok_null {
+
+		} else {
+
+			outBuf := fs.Output.Bytes()
+
+			j.Uuid = string(string(outBuf))
+
+		}
+	}
+
+	state = fflib.FFParse_after_value
+	goto mainparse
+
+handle_Ip:
+
+	/* handler: j.Ip type=string kind=string quoted=false*/
+
+	{
+
+		{
+			if tok != fflib.FFTok_string && tok != fflib.FFTok_null {
+				return fs.WrapErr(fmt.Errorf("cannot unmarshal %s into Go value for string", tok))
+			}
+		}
+
+		if tok == fflib.FFTok_null {
+
+		} else {
+
+			outBuf := fs.Output.Bytes()
+
+			j.Ip = string(string(outBuf))
+
+		}
+	}
+
+	state = fflib.FFParse_after_value
+	goto mainparse
+
+handle_Ua:
+
+	/* handler: j.Ua type=string kind=string quoted=false*/
+
+	{
+
+		{
+			if tok != fflib.FFTok_string && tok != fflib.FFTok_null {
+				return fs.WrapErr(fmt.Errorf("cannot unmarshal %s into Go value for string", tok))
+			}
+		}
+
+		if tok == fflib.FFTok_null {
+
+		} else {
+
+			outBuf := fs.Output.Bytes()
+
+			j.Ua = string(string(outBuf))
+
+		}
+	}
+
+	state = fflib.FFParse_after_value
+	goto mainparse
+
+handle_Tz:
+
+	/* handler: j.Tz type=int kind=int quoted=false*/
+
+	{
+		if tok != fflib.FFTok_integer && tok != fflib.FFTok_null {
+			return fs.WrapErr(fmt.Errorf("cannot unmarshal %s into Go value for int", tok))
+		}
+	}
+
+	{
+
+		if tok == fflib.FFTok_null {
+
+		} else {
+
+			tval, err := fflib.ParseInt(fs.Output.Bytes(), 10, 64)
+
+			if err != nil {
+				return fs.WrapErr(err)
+			}
+
+			j.Tz = int(tval)
+
+		}
+	}
+
+	state = fflib.FFParse_after_value
+	goto mainparse
+
+handle_V:
+
+	/* handler: j.V type=int kind=int quoted=false*/
+
+	{
+		if tok != fflib.FFTok_integer && tok != fflib.FFTok_null {
+			return fs.WrapErr(fmt.Errorf("cannot unmarshal %s into Go value for int", tok))
+		}
+	}
+
+	{
+
+		if tok == fflib.FFTok_null {
+
+		} else {
+
+			tval, err := fflib.ParseInt(fs.Output.Bytes(), 10, 64)
+
+			if err != nil {
+				return fs.WrapErr(err)
+			}
+
+			j.V = int(tval)
+
+		}
+	}
+
+	state = fflib.FFParse_after_value
+	goto mainparse
+
+wantedvalue:
+	return fs.WrapErr(fmt.Errorf("wanted value token, but got token: %v", tok))
+wrongtokenerror:
+	return fs.WrapErr(fmt.Errorf("ffjson: wanted token: %v, but got token: %v output=%s", wantedTok, tok, fs.Output.String()))
+tokerror:
+	if fs.BigError != nil {
+		return fs.WrapErr(fs.BigError)
+	}
+	err = fs.Error.ToError()
+	if err != nil {
+		return fs.WrapErr(err)
+	}
+	panic("ffjson-generated: unreachable, please report bug.")
+done:
+
+	return nil
+}