Method EncodePackedSInt32

encoder.go:218–231

EncodePackedSInt32 writes a list of 32-bit signed integers to the buffer using packed encoding, preceded by the varint-encoded tag key. This operation is O(n^2) because we have to traverse the list of values to calculate the total encoded size and write that size *before* the actual encoded values.

(tag int, vs []int32)

// This operation is O(n^2) because we have to traverse the list of values to calculate the total
// encoded size and write that size *before* the actual encoded values.
func (e *Encoder) EncodePackedSInt32(tag int, vs []int32) {
	if len(vs) == 0 {
		return
	}
	e.offset += EncodeTag(e.p[e.offset:], tag, WireTypeLengthDelimited)
	sz := 0
	for _, v := range vs {
		sz += SizeOfZigZag(uint64(v))
	}
	e.offset += EncodeVarint(e.p[e.offset:], uint64(sz))
	for _, v := range vs {
		e.offset += EncodeZigZag32(e.p[e.offset:], v)
	}
}

// EncodePackedSInt64 writes a list of 64-bit signed integers to the buffer using packed encoding,
// preceded by the varint-encoded tag key.