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091584830b
As an experiment, with a thought for how Gin might eventually migrate to
and use features from jsonv2, I have put together a new json/codec for
json/v2.
---
Selected with -tags jsonv2, and constrained to go1.27 &&
goexperiment.jsonv2 since encoding/json/v2 is still gated by the
experiment in 1.27 and GOEXPERIMENT=nojsonv2 makes it unimportable.
json.go negates that entire expression, mirroring how it already
negates sonic's OS constraint, so -tags jsonv2 on Go 1.25/1.26 falls
back to encoding/json rather than leaving API nil.
Uses json.DefaultOptionsV1() to keep behaviour identical to the v1
codec: v2's native defaults would render nil slices/maps as []/{} and
match member names case-sensitively, silently zeroing fields that
previously bound.
Fills three v1 gaps v2's API doesn't cover directly: UseNumber has no
exported option, so it's reproduced with a custom *any unmarshaler;
MarshalWrite omits Encoder.Encode's trailing newline; MarshalIndent
becomes jsontext.WithIndentPrefix + WithIndent.
42 lines
965 B
Go
42 lines
965 B
Go
// Copyright 2025 Gin Core Team. All rights reserved.
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// Use of this source code is governed by a MIT style
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// license that can be found in the LICENSE file.
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//go:build !(jsonv2 && go1.27 && goexperiment.jsonv2) && !jsoniter && !go_json && !(sonic && (linux || windows || darwin))
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package json
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import (
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"encoding/json"
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"io"
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)
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// Package indicates what library is being used for JSON encoding.
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const Package = "encoding/json"
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func init() {
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API = jsonApi{}
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}
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type jsonApi struct{}
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func (j jsonApi) Marshal(v any) ([]byte, error) {
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return json.Marshal(v)
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}
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func (j jsonApi) Unmarshal(data []byte, v any) error {
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return json.Unmarshal(data, v)
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}
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func (j jsonApi) MarshalIndent(v any, prefix, indent string) ([]byte, error) {
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return json.MarshalIndent(v, prefix, indent)
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}
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func (j jsonApi) NewEncoder(writer io.Writer) Encoder {
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return json.NewEncoder(writer)
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}
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func (j jsonApi) NewDecoder(reader io.Reader) Decoder {
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return json.NewDecoder(reader)
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}
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