feat: add compatible API (#233)

* feat: add compatible API

* test: add api compatibility test

* fmt

* test: adjust CI

* fix: no trailing '\n' for std `Marshal()`

* doc: update README.md

* test: add windows CI

* doc: update README.md

* doc: update README.md

* fmt: add comments and refator

.github/workflows/codeql-analysis.yml

@@ -55,7 +55,7 @@ jobs:
 
       # Initializes the CodeQL tools for scanning.
       - name: Initialize CodeQL
-        uses: github/codeql-action/init@v1
+        uses: github/codeql-action/init@v2
         with:
           languages: ${{ matrix.language }}
           # If you wish to specify custom queries, you can do so here or in a config file.

.github/workflows/push-check-all.yml

@@ -1,4 +1,4 @@
-name: Push Check Linux
+name: Push Check All
 
 on: push
 
@@ -7,7 +7,8 @@ jobs:
     strategy:
       matrix:
         go-version: [1.15.x, 1.16.x, 1.17.x]
-    runs-on: self-hosted
+        os: [self-hosted]
+    runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v2
 
@@ -24,4 +25,4 @@ jobs:
             ${{ runner.os }}-go-
 
       - name: Unit Test
-        run: GOMAXPROCS=4 go test -v -gcflags=-d=checkptr=0 ./...
+        run: go test -v -gcflags=-d=checkptr=0 ./...

.github/workflows/push-check-arm.yml

@@ -0,0 +1,27 @@
+name: Push Check ARM
+
+on: push
+
+jobs:
+  build:
+    strategy:
+      matrix:
+        go-version: [1.15.x, 1.18.x]
+    runs-on: [self-hosted, arm]
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Set up Go
+        uses: actions/setup-go@v2
+        with:
+          go-version: ${{ matrix.go-version }}
+
+      - uses: actions/cache@v2
+        with:
+          path: ~/go/pkg/mod
+          key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
+          restore-keys: |
+            ${{ runner.os }}-go-
+
+      - name: Compatibility Test
+        run: go test -v -gcflags=-d=checkptr=0 .

.github/workflows/push-check-go118.yml

@@ -24,4 +24,4 @@ jobs:
         run: GOMAXPROCS=4 go test -v -gcflags=-d=checkptr=0 -race ./...
       
       - name: Generic Test
-        run: go test -v -gcflags=-d=checkptr=0 -race ./generic_test
+        run: GOMAXPROCS=4 go test -v -gcflags=-d=checkptr=0 -race ./generic_test

.github/workflows/push-check-windows.yml

@@ -1,26 +1,27 @@
-# name: Push Check Go Windows
+name: Push Check Windows
 
-# on: push
+on: push
 
-# jobs:
-#   build:
-#     strategy:
-#       matrix:
-#         go-version: [1.15.x, 1.16.x, 1.17.x, 1.18.x]
-#         os: [windows-latest]
-#     runs-on: ${{ matrix.os }}
-#     steps:
-#       - uses: actions/checkout@v2
+jobs:
+  build:
+    strategy:
+      matrix:
+        go-version: [1.15.x, 1.18.x]
+    runs-on: windows-latest
+    steps:
+      - uses: actions/checkout@v2
 
-#       - name: Set up Go
-#         uses: actions/setup-go@v3
-#         with:
-#           go-version: ${{ matrix.go-version }}
+      - name: Set up Go
+        uses: actions/setup-go@v2
+        with:
+          go-version: ${{ matrix.go-version }}
 
-#       - name: Unit Test
-#         run: go test -v -gcflags -d=checkptr=0 -covermode atomic -coverprofile coverage.out ./...
-#         env:
-#           GOMAXPROCS: 4
+      - uses: actions/cache@v2
+        with:
+          path: ~/go/pkg/mod
+          key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
+          restore-keys: |
+            ${{ runner.os }}-go-
 
-#       - name: Generic Test
-#         run: go test -v -gcflags -d=checkptr=0 -covermode atomic ./generic_test
+      - name: Compatibility Test
+        run: go test -v -gcflags=-d=checkptr=0 .

README.md

@@ -4,7 +4,7 @@ A blazingly fast JSON serializing & deserializing library, accelerated by JI
 
 ## Requirement
 - Go 1.15/1.16/1.17/1.18
-- Linux/darwin OS
+- Linux/MacOS/Windows
 - Amd64 CPU with AVX instruction set
 
 ## Features
@@ -260,6 +260,12 @@ println(string(buf) == string(exp)) // true
 - iteration: `Values()`, `Properties()`, `ForEach()`, `SortKeys()`
 - modification: `Set()`, `SetByIndex()`, `Add()`
 
+## Compatibility
+Sonic **DOSE NOT** ensure to support all environments, due to the difficulty of developing high-performance codes. For developers who use sonic to build their applications in different environments (ex: developing on M1 Mac but running on linux server), or those who want to handle JSON strictly consistent with `encoding/json`, we provide some compatible APIs as `sonic.API`
+- `ConfigDefault`: the sonic's default config (`EscapeHTML=false`,`SortKeys=false`...) to run on sonic-supporting environment. It will fall back to `encoding/json` with corresponding config , and some options like `SortKeys=false` will be invalid.
+- `ConfigStd`: the std-compatible config (`EscapeHTML=true`,`SortKeys=true`...) to run on sonic-supporting environment. It whill fall back to `encoding/json`.
+- `ConfigFastest`: the fastest config (`NoQuoteTextMarshaler=true`) to run on sonic-supporting environment. It will fall back to `encoding/json` with corresponding config , and some options will be invalid.
+
 ## Tips
 
 ### Pretouch
@@ -317,3 +323,6 @@ Why? Because `ast.Node` stores its children using `array`:
 - Using `Interface()`/`Map()` means Sonic must parse all the underlying values, while `ast.Node` can parse them **on demand**.
 
 **CAUTION:** `ast.Node` **DOESN'T** ensure concurrent security directly, due to its **lazy-load** design. However, your can call `Node.Load()`/`Node.LoadAll()` to achieve that, which may bring performance reduction while it still works faster than converting to `map` or `interface{}` 
+
+## Community
+Sonic is a subproject of [CloudWeGo](https://www.cloudwego.io/). We are committed to building a cloud native ecosystem.

api.go

@@ -0,0 +1,127 @@
+/*
+ * Copyright 2021 ByteDance Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package sonic
+
+import (
+    `io`
+)
+ 
+ // Config is a combination of sonic/encoder.Options and sonic/decoder.Options
+ type Config struct {
+    EscapeHTML                    bool
+    SortMapKeys                   bool
+    CompactMarshaler              bool
+    NoQuoteTextMarshaler          bool
+    UseInt64                      bool
+    UseNumber                     bool
+    UseUnicodeErrors              bool
+    DisallowUnknownFields         bool
+    CopyString                    bool
+ }
+ 
+ var (
+    // ConfigDefault is the default config of APIs, aiming at efficiency and safty.
+    ConfigDefault = Config{}.Froze()
+ 
+    // ConfigStd is the standard config of APIs, aiming at being compatible with encoding/json.
+    ConfigStd = Config{
+        EscapeHTML : true,
+        SortMapKeys: true,
+        CompactMarshaler: true,
+        CopyString : true,
+    }.Froze()
+ 
+    // ConfigFastest is the fastest config of APIs, aiming at speed.
+    ConfigFastest = Config{
+        NoQuoteTextMarshaler: true,
+    }.Froze()
+ )
+ 
+ 
+ // API a binding of specific config.
+ // This interface is inspired by github.com/json-iterator/go,
+ // and has same behaviors under equavilent config.
+ type API interface {
+    // MarshalToString returns the JSON encoding string of v
+    MarshalToString(v interface{}) (string, error)
+    // Marshal returns the JSON encoding bytes of v.
+    Marshal(v interface{}) ([]byte, error)
+    // MarshalIndent returns the JSON encoding bytes with indent and prefix.
+    MarshalIndent(v interface{}, prefix, indent string) ([]byte, error)
+    // UnmarshalFromString parses the JSON-encoded bytes and stores the result in the value pointed to by v.
+    UnmarshalFromString(str string, v interface{}) error
+    // Unmarshal parses the JSON-encoded string and stores the result in the value pointed to by v.
+    Unmarshal(data []byte, v interface{}) error
+    // NewEncoder create a Encoder holding writer
+    NewEncoder(writer io.Writer) Encoder
+    // NewDecoder create a Decoder holding reader
+    NewDecoder(reader io.Reader) Decoder
+    // Valid validates the JSON-encoded bytes and reportes if it is valid
+    Valid(data []byte) bool
+ }
+ 
+ // Encoder encodes JSON into io.Writer
+ type Encoder interface {
+    // Encode writes the JSON encoding of v to the stream, followed by a newline character.
+    Encode(val interface{}) error
+    // SetEscapeHTML specifies whether problematic HTML characters 
+    // should be escaped inside JSON quoted strings. 
+    // The default behavior NOT ESCAPE 
+    SetEscapeHTML(on bool)
+    // SetIndent instructs the encoder to format each subsequent encoded value 
+    // as if indented by the package-level function Indent(dst, src, prefix, indent).
+    // Calling SetIndent("", "") disables indentation
+    SetIndent(prefix, indent string)
+ }
+ 
+ // Decoder decodes JSON from io.Read
+ type Decoder interface {
+    // Decode reads the next JSON-encoded value from its input and stores it in the value pointed to by v.
+    Decode(val interface{}) error
+    // Buffered returns a reader of the data remaining in the Decoder's buffer.
+    // The reader is valid until the next call to Decode.
+    Buffered() io.Reader
+    // 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.
+    DisallowUnknownFields()
+    // More reports whether there is another element in the current array or object being parsed.
+    More() bool
+    // UseNumber causes the Decoder to unmarshal a number into an interface{} as a Number instead of as a float64.
+    UseNumber()
+ }
+
+ // Marshal returns the JSON encoding bytes of v.
+func Marshal(val interface{}) ([]byte, error) {
+    return ConfigDefault.Marshal(val)
+}
+
+// MarshalString returns the JSON encoding string of v.
+func MarshalString(val interface{}) (string, error) {
+    return ConfigDefault.MarshalToString(val)
+}
+
+// Unmarshal parses the JSON-encoded data and stores the result in the value pointed to by v.
+// NOTICE: This API copies given buffer by default,
+// if you want to pass JSON more efficiently, use UnmarshalString instead.
+func Unmarshal(buf []byte, val interface{}) error {
+    return ConfigDefault.Unmarshal(buf, val)
+}
+
+// UnmarshalString is like Unmarshal, except buf is a string.
+func UnmarshalString(buf string, val interface{}) error {
+    return ConfigDefault.UnmarshalFromString(buf, val)
+}

api_test.go

@@ -0,0 +1,262 @@
+/*
+ * Copyright 2021 ByteDance Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package sonic
+
+import (
+    `bytes`
+    `encoding/json`
+    `testing`
+
+    jsoniter `github.com/json-iterator/go`
+    `github.com/stretchr/testify/require`
+)
+
+var jt = jsoniter.Config{
+    ValidateJsonRawMessage: true,
+}.Froze()
+
+func TestCompatMarshalDefault(t *testing.T){
+    var obj = map[string]interface{}{
+        "c": json.RawMessage("[\"<&>\"]"),
+    }
+    sout, serr := ConfigDefault.Marshal(obj)
+    jout, jerr := jt.Marshal(obj)
+    require.Equal(t, jerr, serr)
+    require.Equal(t, string(jout), string(sout))
+
+    // obj = map[string]interface{}{
+    //     "a": json.RawMessage(" [} "),
+    // }
+    // sout, serr = ConfigDefault.Marshal(obj)
+    // jout, jerr = json.Marshal(obj)
+    // require.NotNil(t, jerr)
+    // require.NotNil(t, serr)
+	// require.Equal(t, string(jout), string(sout))
+	
+	obj = map[string]interface{}{
+        "a": json.RawMessage("1"),
+    }
+    sout, serr = ConfigDefault.MarshalIndent(obj, "", "  ")
+    jout, jerr = jt.MarshalIndent(obj, "", "  ")
+	require.Equal(t, jerr, serr)
+    require.Equal(t, string(jout), string(sout))
+}
+
+func TestCompatMarshalStd(t *testing.T) {
+    t.Parallel()
+    var obj = map[string]interface{}{
+        "c": json.RawMessage(" [ \"<&>\" ] "),
+        "b": json.RawMessage(" [ ] "),
+    }
+    sout, serr := ConfigStd.Marshal(obj)
+    jout, jerr := json.Marshal(obj)
+    require.Equal(t, jerr, serr)
+    require.Equal(t, string(jout), string(sout))
+
+    obj = map[string]interface{}{
+        "a": json.RawMessage(" [} "),
+    }
+    sout, serr = ConfigStd.Marshal(obj)
+    jout, jerr = json.Marshal(obj)
+    require.NotNil(t, jerr)
+    require.NotNil(t, serr)
+    require.Equal(t, string(jout), string(sout))
+
+    obj = map[string]interface{}{
+        "a": json.RawMessage("1"),
+    }
+    sout, serr = ConfigStd.MarshalIndent(obj, "xxxx", "  ")
+    jout, jerr = json.MarshalIndent(obj, "xxxx", "  ")
+    require.Equal(t, jerr, serr)
+    require.Equal(t, string(jout), string(sout))
+}
+
+func TestCompatUnmarshalDefault(t *testing.T) {
+    var sobj = map[string]interface{}{}
+    var jobj = map[string]interface{}{}
+    var data = []byte(`{"a":-0}`)
+    var str = string(data)
+    serr := ConfigDefault.UnmarshalFromString(str, &sobj)
+    jerr := jt.UnmarshalFromString(str, &jobj)
+    require.Equal(t, jerr, serr)
+	require.Equal(t, jobj, sobj)
+
+    x := struct{A json.Number}{}
+    y := struct{A json.Number}{}
+    data = []byte(`{"A":"1", "B":-1}`)
+    serr = ConfigDefault.Unmarshal(data, &x)
+    jerr = jt.Unmarshal(data, &y)
+    require.Equal(t, jerr, serr)
+    require.Equal(t, y, x)
+}
+
+func TestCompatUnmarshalStd(t *testing.T) {
+    var sobj = map[string]interface{}{}
+    var jobj = map[string]interface{}{}
+    var data = []byte(`{"a":1.00000001E-10}`)
+    var str = string(data)
+    serr := ConfigStd.UnmarshalFromString(str, &sobj)
+    jerr := json.Unmarshal(data, &jobj)
+    require.Equal(t, jerr, serr)
+    require.Equal(t, jobj, sobj)
+    data[2] = '0'
+    require.Equal(t, jobj, sobj)
+
+    sobj = map[string]interface{}{}
+    jobj = map[string]interface{}{}
+    data = []byte(`{"a":1}`)
+    cfg := Config{
+        UseNumber: true,
+    }.Froze()
+    serr = cfg.Unmarshal(data, &sobj)
+    dec := json.NewDecoder(bytes.NewBuffer(data))
+    dec.UseNumber()
+    jerr = dec.Decode(&jobj)
+    require.Equal(t, jerr, serr)
+    require.Equal(t, jobj, sobj)
+
+    x := struct{A json.Number}{}
+    y := struct{A json.Number}{}
+    data = []byte(`{"A":"1", "B":-1}`)
+    cfg = Config{
+        DisallowUnknownFields: true,
+    }.Froze()
+    serr = cfg.Unmarshal(data, &x)
+    dec = json.NewDecoder(bytes.NewBuffer(data))
+    dec.UseNumber()
+    dec.DisallowUnknownFields()
+    jerr = dec.Decode(&y)
+    require.Equal(t, jerr, serr)
+    require.Equal(t, y, x)
+}
+
+func TestCompatEncoderDefault(t *testing.T) {
+    var o = map[string]interface{}{
+        "a": "<>",
+        // "b": json.RawMessage(" [ ] "),
+    }
+    var w1 = bytes.NewBuffer(nil)
+    var w2 = bytes.NewBuffer(nil)
+    var enc1 = jt.NewEncoder(w1)
+    var enc2 = ConfigDefault.NewEncoder(w2)
+
+    require.Nil(t, enc1.Encode(o))
+    require.Nil(t, enc2.Encode(o))
+    require.Equal(t, w1.String(), w2.String())
+
+    enc1.SetEscapeHTML(true)
+    enc2.SetEscapeHTML(true)
+    enc1.SetIndent("", "  ")
+    enc2.SetIndent("", "  ")
+    require.Nil(t, enc1.Encode(o))
+    require.Nil(t, enc2.Encode(o))
+    require.Equal(t, w1.String(), w2.String())
+    
+    enc1.SetEscapeHTML(false)
+    enc2.SetEscapeHTML(false)
+    enc1.SetIndent("", "")
+    enc2.SetIndent("", "")
+    require.Nil(t, enc1.Encode(o))
+    require.Nil(t, enc2.Encode(o))
+    require.Equal(t, w1.String(), w2.String())
+}
+
+func TestCompatEncoderStd(t *testing.T) {
+    var o = map[string]interface{}{
+        "a": "<>",
+        "b": json.RawMessage(" [ ] "),
+    }
+    var w1 = bytes.NewBuffer(nil)
+    var w2 = bytes.NewBuffer(nil)
+    var enc1 = json.NewEncoder(w1)
+    var enc2 = ConfigStd.NewEncoder(w2)
+
+    require.Nil(t, enc1.Encode(o))
+    require.Nil(t, enc2.Encode(o))
+    require.Equal(t, w1.String(), w2.String())
+
+    enc1.SetEscapeHTML(true)
+    enc2.SetEscapeHTML(true)
+    enc1.SetIndent("\n", "  ")
+    enc2.SetIndent("\n", "  ")
+    require.Nil(t, enc1.Encode(o))
+    require.Nil(t, enc2.Encode(o))
+    require.Equal(t, w1.String(), w2.String())
+    
+    enc1.SetEscapeHTML(false)
+    enc2.SetEscapeHTML(false)
+    enc1.SetIndent("", "")
+    enc2.SetIndent("", "")
+    require.Nil(t, enc1.Encode(o))
+    require.Nil(t, enc2.Encode(o))
+    require.Equal(t, w1.String(), w2.String())
+}
+
+func TestCompatDecoderStd(t *testing.T) {
+    var o1 = map[string]interface{}{}
+    var o2 = map[string]interface{}{}
+    var s = `{"a":"b"} {"1":"2"} a {}`
+    var w1 = bytes.NewBuffer([]byte(s))
+    var w2 = bytes.NewBuffer([]byte(s))
+    var enc1 = json.NewDecoder(w1)
+    var enc2 = ConfigStd.NewDecoder(w2)
+
+    require.Equal(t, enc1.More(), enc2.More())
+    require.Nil(t, enc1.Decode(&o1))
+    require.Nil(t, enc2.Decode(&o2))
+    require.Equal(t, w1.String(), w2.String())
+
+    require.Equal(t, enc1.More(), enc2.More())
+    require.Nil(t, enc1.Decode(&o1))
+    require.Nil(t, enc2.Decode(&o2))
+    require.Equal(t, w1.String(), w2.String())
+    
+    require.Equal(t, enc1.More(), enc2.More())
+    require.NotNil(t, enc1.Decode(&o1))
+    require.NotNil(t, enc2.Decode(&o2))
+    require.Equal(t, w1.String(), w2.String())
+}
+
+func TestCompatDecoderDefault(t *testing.T) {
+    var o1 = map[string]interface{}{}
+    var o2 = map[string]interface{}{}
+    var s = `{"a":"b"} {"1":"2"} a {}`
+    var w1 = bytes.NewBuffer([]byte(s))
+    var w2 = bytes.NewBuffer([]byte(s))
+    var enc1 = jt.NewDecoder(w1)
+    var enc2 = ConfigDefault.NewDecoder(w2)
+
+    require.Equal(t, enc1.More(), enc2.More())
+    require.Nil(t, enc1.Decode(&o1))
+    require.Nil(t, enc2.Decode(&o2))
+    require.Equal(t, w1.String(), w2.String())
+
+    require.Equal(t, enc1.More(), enc2.More())
+    require.Nil(t, enc1.Decode(&o1))
+    require.Nil(t, enc2.Decode(&o2))
+    require.Equal(t, w1.String(), w2.String())
+    
+    require.Equal(t, enc1.More(), enc2.More())
+    require.NotNil(t, enc1.Decode(&o1))
+    require.NotNil(t, enc2.Decode(&o2))
+    require.Equal(t, w1.String(), w2.String())
+
+    // require.Equal(t, enc1.More(), enc2.More())
+    // require.NotNil(t, enc1.Decode(&o1))
+    // require.NotNil(t, enc2.Decode(&o2))
+    // require.Equal(t, w1.String(), w2.String())
+}

compat.go

@@ -0,0 +1,117 @@
+// +build !amd64
+
+/*
+ * Copyright 2021 ByteDance Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package sonic
+
+import (
+    `bytes`
+    `encoding/json`
+    `io`
+)
+
+type frozenConfig struct {
+    Config
+}
+
+// Froze convert the Config to API
+func (cfg Config) Froze() API {
+    api := &frozenConfig{Config: cfg}
+    return api
+}
+
+func (cfg *frozenConfig) marshalOptions(val interface{}, prefix, indent string) ([]byte, error) {
+    w := bytes.NewBuffer([]byte{})
+    enc := json.NewEncoder(w)
+    enc.SetEscapeHTML(cfg.EscapeHTML)
+    enc.SetIndent(prefix, indent)
+    err := enc.Encode(val)
+	out := w.Bytes()
+
+	// json.Encoder always appends '\n' after encoding,
+	// which is not same with json.Marshal()
+	if len(out) > 0 && out[len(out)-1] == '\n' {
+		out = out[:len(out)-1]
+	}
+	return out, err
+}
+
+// Marshal is implemented by sonic
+func (cfg *frozenConfig) Marshal(val interface{}) ([]byte, error) {
+    if !cfg.EscapeHTML {
+        return cfg.marshalOptions(val, "", "")
+    }
+    return json.Marshal(val)
+}
+
+// MarshalToString is implemented by sonic
+func (cfg *frozenConfig) MarshalToString(val interface{}) (string, error) {
+    out, err := cfg.Marshal(val)
+    return string(out), err
+}
+
+// MarshalIndent is implemented by sonic
+func (cfg *frozenConfig) MarshalIndent(val interface{}, prefix, indent string) ([]byte, error) {
+    if !cfg.EscapeHTML {
+        return cfg.marshalOptions(val, prefix, indent)
+    }
+    return json.MarshalIndent(val, prefix, indent)
+}
+
+// UnmarshalFromString is implemented by sonic
+func (cfg *frozenConfig) UnmarshalFromString(buf string, val interface{}) error {
+    r := bytes.NewBufferString(buf)
+    dec := json.NewDecoder(r)
+    if cfg.UseNumber {
+        dec.UseNumber()
+    }
+    if cfg.DisallowUnknownFields {
+        dec.DisallowUnknownFields()
+    }
+    return dec.Decode(val)
+}
+
+// Unmarshal is implemented by sonic
+func (cfg *frozenConfig) Unmarshal(buf []byte, val interface{}) error {
+    return cfg.UnmarshalFromString(string(buf), val)
+}
+
+// NewEncoder is implemented by sonic
+func (cfg *frozenConfig) NewEncoder(writer io.Writer) Encoder {
+    enc := json.NewEncoder(writer)
+    if !cfg.EscapeHTML {
+        enc.SetEscapeHTML(cfg.EscapeHTML)
+    }
+    return enc
+}
+
+// NewDecoder is implemented by sonic
+func (cfg *frozenConfig) NewDecoder(reader io.Reader) Decoder {
+    dec := json.NewDecoder(reader)
+    if cfg.UseNumber {
+        dec.UseNumber()
+    }
+    if cfg.DisallowUnknownFields {
+        dec.DisallowUnknownFields()
+    }
+    return dec
+}
+
+// Valid is implemented by sonic
+func (cfg *frozenConfig) Valid(data []byte) bool {
+    return json.Valid(data)
+}

decode_float_test.go

@@ -1,3 +1,5 @@
+// +build amd64
+
 /*
  * Copyright 2021 ByteDance Inc.
  *
@@ -17,12 +19,12 @@
 package sonic
 
 import (
-	"encoding/json"
-	"reflect"
-	"strings"
-	"testing"
+    `encoding/json`
+    `reflect`
+    `strings`
+    `testing`
 
-	"github.com/bytedance/sonic/decoder"
+    `github.com/bytedance/sonic/decoder`
 )
 
 type atofTest struct {

decode_test.go

@@ -1,3 +1,5 @@
+// +build amd64
+
 /*
  * Copyright 2021 ByteDance Inc.
  *

decoder/decoder.go

@@ -37,6 +37,24 @@ const (
     _F_allow_control = 31
 )
 
+type Options uint64
+
+const (
+    OptionUseInt64         Options = 1 << _F_use_int64
+    OptionUseNumber        Options = 1 << _F_use_number
+    OptionUseUnicodeErrors Options = 1 << _F_disable_urc
+    OptionDisableUnknown   Options = 1 << _F_disable_unknown
+    OptionCopyString       Options = 1 << _F_copy_string
+)
+
+func (self *Decoder) SetOptions(opts Options) {
+    if (opts & 1<<_F_use_number != 0) && (opts & 1<<_F_use_int64 != 0) {
+        panic("can't set OptionUseInt64 and OptionUseNumber both!")
+    }
+    self.f = uint64(opts)
+}
+
+
 // Decoder is the decoder context object
 type Decoder struct {
     i int

encode_test.go

@@ -1,3 +1,5 @@
+// +build amd64
+
 /*
  * Copyright 2021 ByteDance Inc.
  *
@@ -160,7 +162,7 @@ func TestRoundtripStringTag(t *testing.T) {
         t.Run(test.name, func(t *testing.T) {
             // Indent with a tab prefix to make the multi-line string
             // literals in the table nicer to read.
-			got, err := encoder.EncodeIndented(&test.in, "\t\t\t", "\t", 0)
+            got, err := encoder.EncodeIndented(&test.in, "            ", "    ", 0)
             if err != nil {
                 t.Fatal(err)
             }

search_test.go

@@ -1,3 +1,5 @@
+// +build amd64
+
 /*
  * Copyright 2021 ByteDance Inc.
  *

sonic.go

@@ -1,3 +1,5 @@
+// +build amd64
+
 /*
  * Copyright 2021 ByteDance Inc.
  *
@@ -18,6 +20,7 @@
 package sonic
 
 import (
+    `io`
     `reflect`
 
     `github.com/bytedance/sonic/ast`
@@ -28,36 +31,7 @@ import (
     `github.com/bytedance/sonic/internal/rt`
 )
 
-// Marshal returns the JSON encoding bytes of v.
-func Marshal(val interface{}) ([]byte, error) {
-    return encoder.Encode(val, 0)
-}
-
-// MarshalString returns the JSON encoding string of v.
-func MarshalString(val interface{}) (string, error) {
-    buf, err := encoder.Encode(val, 0)
-    return rt.Mem2Str(buf), err
-}
-
-// Unmarshal parses the JSON-encoded data and stores the result in the value
-// pointed to by v.
-// NOTICE: This API copies given buffer by default,
-// if you want to pass JSON more efficiently, use UnmarshalString instead.
-func Unmarshal(buf []byte, val interface{}) error {
-    return UnmarshalString(string(buf), val)
-}
-
-// UnmarshalString is like Unmarshal, except buf is a string.
-func UnmarshalString(buf string, val interface{}) error {
-    dec := decoder.NewDecoder(buf)
-    err := dec.Decode(val)
-    pos := dec.Pos()
-
-    /* check for errors */
-    if err != nil {
-        return err
-    }
-
+func checkTrailings(buf string, pos int) error {
     /* skip all the trailing spaces */
     if pos != len(buf) {
         for pos < len(buf) && (types.SPACE_MASK & (1 << buf[pos])) != 0 {
@@ -73,11 +47,103 @@ func UnmarshalString(buf string, val interface{}) error {
     /* junk after JSON value */
     return decoder.SyntaxError {
         Src  : buf,
-        Pos  : dec.Pos(),
+        Pos  : pos,
         Code : types.ERR_INVALID_CHAR,
     }
 }
 
+type frozenConfig struct {
+    Config
+    encoderOpts encoder.Options
+    decoderOpts decoder.Options
+}
+
+// Froze convert the Config to API
+func (cfg Config) Froze() API {
+    api := &frozenConfig{Config: cfg}
+    if cfg.EscapeHTML {
+        api.encoderOpts |= encoder.EscapeHTML
+    }
+    if cfg.SortMapKeys {
+        api.encoderOpts |= encoder.SortMapKeys
+    }
+    if cfg.CompactMarshaler {
+        api.encoderOpts |= encoder.CompactMarshaler
+    }
+    if cfg.NoQuoteTextMarshaler {
+        api.encoderOpts |= encoder.NoQuoteTextMarshaler
+    }
+    if cfg.UseInt64 {
+        api.decoderOpts |= decoder.OptionUseInt64
+    }
+    if cfg.UseNumber {
+        api.decoderOpts |= decoder.OptionUseNumber
+    }
+    if cfg.DisallowUnknownFields {
+        api.decoderOpts |= decoder.OptionDisableUnknown
+    }
+    if cfg.CopyString {
+        api.decoderOpts |= decoder.OptionCopyString
+    }
+    return api
+}
+
+// Marshal is implemented by sonic
+func (cfg *frozenConfig) Marshal(val interface{}) ([]byte, error) {
+    return encoder.Encode(val, cfg.encoderOpts)
+}
+
+// MarshalToString is implemented by sonic
+func (cfg *frozenConfig) MarshalToString(val interface{}) (string, error) {
+    buf, err := encoder.Encode(val, cfg.encoderOpts)
+    return rt.Mem2Str(buf), err
+}
+
+// MarshalIndent is implemented by sonic
+func (cfg *frozenConfig) MarshalIndent(val interface{}, prefix, indent string) ([]byte, error) {
+    return encoder.EncodeIndented(val, prefix, indent, cfg.encoderOpts)
+}
+
+// UnmarshalFromString is implemented by sonic
+func (cfg *frozenConfig) UnmarshalFromString(buf string, val interface{}) error {
+    dec := decoder.NewDecoder(buf)
+    dec.SetOptions(cfg.decoderOpts)
+
+    err := dec.Decode(val)
+    pos := dec.Pos()
+
+    /* check for errors */
+    if err != nil {
+        return err
+    }
+    return checkTrailings(buf, pos)
+}
+
+// Unmarshal is implemented by sonic
+func (cfg *frozenConfig) Unmarshal(buf []byte, val interface{}) error {
+    return cfg.UnmarshalFromString(string(buf), val)
+}
+
+// NewEncoder is implemented by sonic
+func (cfg *frozenConfig) NewEncoder(writer io.Writer) Encoder {
+    enc := encoder.NewStreamEncoder(writer)
+    enc.Opts = cfg.encoderOpts
+    return enc
+}
+
+// NewDecoder is implemented by sonic
+func (cfg *frozenConfig) NewDecoder(reader io.Reader) Decoder {
+    dec := decoder.NewStreamDecoder(reader)
+    dec.SetOptions(cfg.decoderOpts)
+    return dec
+}
+
+// Valid is implemented by sonic
+func (cfg *frozenConfig) Valid(data []byte) bool {
+    ok, _ := encoder.Valid(data)
+    return ok
+}
+
 // Pretouch compiles vt ahead-of-time to avoid JIT compilation on-the-fly, in
 // order to reduce the first-hit latency.
 //

use_number_test.go

@@ -1,3 +1,5 @@
+// +build amd64
+
 /*
  * Copyright 2021 ByteDance Inc.
  *
@@ -17,11 +19,11 @@
 package sonic
 
 import (
-	"encoding/json"
-	"reflect"
-	"testing"
+    `encoding/json`
+    `reflect`
+    `testing`
 
-	"github.com/bytedance/sonic/decoder"
+    `github.com/bytedance/sonic/decoder`
 )
 
 type useInt64Test struct {