Method Decode

internal/encoding/json/stream.go:48–78

Decode reads the next JSON-encoded value from its input and stores it in the value pointed to by v. See the documentation for [Unmarshal] for details about the conversion of JSON into a Go value.

(v any)

// See the documentation for [Unmarshal] for details about
// the conversion of JSON into a Go value.
func (dec *Decoder) Decode(v any) error {
	if dec.err != nil {
		return dec.err
	}

	if err := dec.tokenPrepareForDecode(); err != nil {
		return err
	}

	if !dec.tokenValueAllowed() {
		return &SyntaxError{msg: "not at beginning of value", Offset: dec.InputOffset()}
	}

	// Read whole value into buffer.
	n, err := dec.readValue()
	if err != nil {
		return err
	}
	dec.d.init(dec.buf[dec.scanp : dec.scanp+n])
	dec.scanp += n

	// Don't save err from unmarshal into dec.err:
	// the connection is still usable since we read a complete JSON
	// object from it before the error happened.
	err = dec.d.unmarshal(v)

	// fixup token streaming state
	dec.tokenValueEnd()

	return err
}

// Buffered returns a reader of the data remaining in the Decoder's
// buffer. The reader is valid until the next call to [Decoder.Decode].