Method DecodeInt32

decoder.go:255–272

DecodeInt32 decodes a varint-encoded 32-bit integer from the stream and returns the value. io.ErrUnexpectedEOF is returned if the operation would read past the end of the data.

()

//
// io.ErrUnexpectedEOF is returned if the operation would read past the end of the data.
func (d *Decoder) DecodeInt32() (int32, error) {
	if d.offset >= len(d.p) {
		return 0, io.ErrUnexpectedEOF
	}
	v, n, err := DecodeVarint(d.p[d.offset:])
	if err != nil {
		return 0, fmt.Errorf("invalid data at byte %d: %w", d.offset, err)
	}
	if n == 0 {
		return 0, fmt.Errorf("invalid data at byte %d: %w", d.offset, ErrInvalidVarintData)
	}
	// ensure the result is within [-math.MaxInt32, math.MaxInt32] when converted to a signed value
	if i64 := int64(v); i64 > math.MaxInt32 || i64 < math.MinInt32 {
		return 0, ErrValueOverflow
	}
	d.offset += n
	return int32(v), nil
}

// DecodeInt64 decodes a varint-encoded 64-bit integer from the stream and returns the value.
//