Method append

backend/plugin/parser/tsql/batch/batch.go:242–264

append appends r to b.Buffer separated by sep when b.Buffer is not already empty. Dynamically grows b.Buf as necessary to accommodate r and the separator. Specifically, when b.Buf is not empty, b.Buf will grow by increments of MinCapIncrease. After a call to append, b.Len will be len(b.Buf)+len(se

(r, sep []rune)

// After a call to append, b.Len will be len(b.Buf)+len(sep)+len(r). Call Reset
// to reset the Buf.
func (b *Batcher) append(r, sep []rune) {
	rlen := len(r)
	// initial
	if b.buffer == nil {
		b.buffer, b.length = r, rlen
		b.beginByteOffset = b.firstByteOffset
		return
	}
	blen, seplen := b.length, len(sep)
	tlen := blen + rlen + seplen
	// grow
	if bcap := cap(b.buffer); tlen > bcap {
		n := tlen + 2*rlen
		n += minCapIncrease - (n % minCapIncrease)
		z := make([]rune, blen, n)
		copy(z, b.buffer)
		b.buffer = z
	}
	b.buffer = b.buffer[:tlen]
	copy(b.buffer[blen:], sep)
	copy(b.buffer[blen+seplen:], r)
	b.length = tlen
}

// readString seeks to the end of a string returning the position and whether
// or not the string's end was found.