Method UnmarshalJSON

libs/bits/bit_array.go:397–424

UnmarshalJSON implements json.Unmarshaler interface by unmarshaling a custom JSON description.

(bz []byte)

// UnmarshalJSON implements json.Unmarshaler interface by unmarshaling a custom
// JSON description.
func (bA *BitArray) UnmarshalJSON(bz []byte) error {
	b := string(bz)
	if b == "null" {
		// This is required e.g. for encoding/json when decoding
		// into a pointer with pre-allocated BitArray.
		bA.Bits = 0
		bA.Elems = nil
		return nil
	}

	// Validate 'b'.
	match := bitArrayJSONRegexp.FindStringSubmatch(b)
	if match == nil {
		return fmt.Errorf("bitArray in JSON should be a string of format %q but got %s", bitArrayJSONRegexp.String(), b)
	}
	bits := match[1]

	// Construct new BitArray and copy over.
	numBits := len(bits)
	bA2 := NewBitArray(numBits)
	for i := 0; i < numBits; i++ {
		if bits[i] == 'x' {
			bA2.SetIndex(i, true)
		}
	}
	*bA = *bA2 //nolint:govet
	return nil
}

// ToProto converts BitArray to protobuf. It returns nil if BitArray is
// nil/empty.