// Copyright 2023 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
//go:build goexperiment.jsonv2
package jsontext
import (
"io"
"encoding/json/internal"
)
// Internal is for internal use only.
// This is exempt from the Go compatibility agreement.
var Internal exporter
type exporter struct{}
// Export exposes internal functionality from "jsontext" to "json".
// This cannot be dynamically called by other packages since
// they cannot obtain a reference to the internal.AllowInternalUse value.
func (exporter) Export(p *internal.NotForPublicUse) export {
if p != &internal.AllowInternalUse {
panic("unauthorized call to Export")
}
return export{}
}
// The export type exposes functionality to packages with visibility to
// the internal.AllowInternalUse variable. The "json" package uses this
// to modify low-level state in the Encoder and Decoder types.
// It mutates the state directly instead of calling ReadToken or WriteToken
// since this is more performant. The public APIs need to track state to ensure
// that users are constructing a valid JSON value, but the "json" implementation
// guarantees that it emits valid JSON by the structure of the code itself.
type export struct{}
// Encoder returns a pointer to the underlying encoderState.
func (export) Encoder(e *Encoder) *encoderState { return &e.s }
// Decoder returns a pointer to the underlying decoderState.
func (export) Decoder(d *Decoder) *decoderState { return &d.s }
func (export) GetBufferedEncoder(o ...Options) *Encoder {
return getBufferedEncoder(o...)
}
func (export) PutBufferedEncoder(e *Encoder) {
putBufferedEncoder(e)
}
func (export) GetStreamingEncoder(w io.Writer, o ...Options) *Encoder {
return getStreamingEncoder(w, o...)
}
func (export) PutStreamingEncoder(e *Encoder) {
putStreamingEncoder(e)
}
func (export) GetBufferedDecoder(b []byte, o ...Options) *Decoder {
return getBufferedDecoder(b, o...)
}
func (export) PutBufferedDecoder(d *Decoder) {
putBufferedDecoder(d)
}
func (export) GetStreamingDecoder(r io.Reader, o ...Options) *Decoder {
return getStreamingDecoder(r, o...)
}
func (export) PutStreamingDecoder(d *Decoder) {
putStreamingDecoder(d)
}
func (export) IsIOError(err error) bool {
_, ok := err.(*ioError)
return ok
}
