Opinionated config for -json=sonic (#84)

Author: VojtechVitek

README.md

@@ -22,18 +22,18 @@ As you can see, the `-target` supports default `golang`, any git URI, or a local
 ### Set custom template variables
 Change any of the following values by passing `-option="Value"` CLI flag to `webrpc-gen`.
 
-| webrpc-gen -option    | Default    | Description                                                                 | Added in |
-|-----------------------|------------|-----------------------------------------------------------------------------|----------|
-| `-pkg=<name>`         | `"proto"`  | package name                                                                | v0.5.0   |
-| `-client`             | `false`    | generate client code                                                        | v0.5.0   |
-| `-server`             | `false`    | generate server code                                                        | v0.5.0   |
-| `-types=false`        | `true`     | don't generate types                                                        | v0.13.0  |
-| `-json=github.com/bytedance/sonic`|| use [sonic](https://github.com/bytedance/sonic) for JSON encoding           | v0.18.0  |
-| `-json=jsoniter`      | `""`       | use [jsoniter](https://github.com/json-iterator/go) for JSON encoding       | v0.12.0  |
-| `-json=<pkg>`         |            | use other drop-in replacement JSON encoding package                         | v0.18.0  |
-| `-fixEmptyArrays`     | `false`    | force empty array `[]` instead of `null` in JSON (see Go [#27589][go27589]) | v0.13.0  |
-| `-errorStackTrace`    | `false`    | enables error stack traces                                                  | v0.14.0  |
-| `-webrpcHeader=false` | `true`     | enable client send webrpc version in http headers                           | v0.16.0  |
+| webrpc-gen -option    | Default   | Description                                                                 | Added in |
+|-----------------------|-----------|-----------------------------------------------------------------------------|----------|
+| `-pkg=<name>`         | `"proto"` | package name                                                                | v0.5.0   |
+| `-client`             | `false`   | generate client code                                                        | v0.5.0   |
+| `-server`             | `false`   | generate server code                                                        | v0.5.0   |
+| `-types=false`        | `true`    | don't generate types                                                        | v0.13.0  |
+| `-json=sonic`         |           | use [sonic](https://github.com/bytedance/sonic) for JSON encoding           | v0.18.0  |
+| `-json=jsoniter`      |           | use [jsoniter](https://github.com/json-iterator/go) for JSON encoding       | v0.12.0  |
+| `-json=<pkg>`         |           | use alternative drop-in replacement import path for JSON encoding package   | v0.18.0  |
+| `-fixEmptyArrays`     | `false`   | `encoding/json`: fix `null` arrays with reflect (see Go [#27589][go27589])  | v0.13.0  |
+| `-errorStackTrace`    | `false`   | enables error stack traces                                                  | v0.14.0  |
+| `-webrpcHeader=false` | `true`    | enable client send webrpc version in http headers                           | v0.16.0  |
 
 Example:
 ```

_examples/golang-basics/example.gen.go

@@ -1,6 +1,6 @@
 package main
 
-//go:generate go run github.com/webrpc/webrpc/cmd/webrpc-gen -schema=example.ridl -target=../../../gen-golang -pkg=main -server -client -json=github.com/bytedance/sonic -fixEmptyArrays -out=./example.gen.go
+//go:generate go run github.com/webrpc/webrpc/cmd/webrpc-gen -schema=example.ridl -target=../../../gen-golang -pkg=main -server -client -json=sonic -out=./example.gen.go
 
 import (
 	"context"

_examples/golang-basics/main.go

@@ -71,6 +71,8 @@ import (
 	{{- /* Already imported in the stdlib section. */ -}}
 {{- else if eq $opts.json "jsoniter" -}}
 	{{- set $imports "github.com/json-iterator/go" "jsoniter" -}}
+{{- else if eq $opts.json "sonic" -}}
+	{{- set $imports "github.com/bytedance/sonic" "" -}}
 {{- else -}}
 	{{- set $imports $opts.json "json" -}}
 {{- end -}}
@@ -106,6 +108,16 @@ import (
 {{- if eq $opts.json "jsoniter" }}
 
 var json = jsoniter.ConfigCompatibleWithStandardLibrary
+
+{{- else if eq $opts.json "sonic" }}
+
+// Opinionated config for -json=sonic, see https://github.com/bytedance/sonic/blob/main/api.go.
+var json = sonic.Config{
+	NoNullSliceOrMap: true, // Encode empty Array or Object as '[]' or '{}' instead of 'null'.
+	CompactMarshaler: true,
+	CopyString : true,
+	ValidateString : true,
+}.Froze()
 {{- end -}}
 
 {{- end -}}