}
}

// A StringReader delivers its data one string segment at a time via Read.
type StringReader struct {
	data []string
	step int
}

func (r *StringReader) Read(p []byte) (n int, err error) {
	if r.step < len(r.data) {
		s := r.data[r.step]
		n = copy(p, s)
		r.step++
	} else {
		err = io.EOF
	}
	return
}

func readRuneSegments(t *testing.T, segments []string) {
	got := ""

	LDPSW	8(R1), (ZR, R2)     // 3f084169
	STP	(R3, R4), (R5)      // a31000a9
	STP	(R3, R4), 8(R5)     // a39000a9
	STP.W	(R3, R4), 8(R5)     // a39080a9
	STP.P	(R3, R4), 8(R5)     // a39080a8
	STP	(R3, R4), -8(R5)    // a3903fa9
	STP	(R3, R4), -4(R5)    // bb1000d1631300a9
	STP	(R3, R4), 11(R0)    // 1b2c0091631300a9
	STP	(R3, R4), 1024(R0)  // 1b001091631300a9
	STP	(R3, R4), (RSP)     // e31300a9

		buf[n-7] = '\x00'
	})
}

func BenchmarkCountSingle(b *testing.B) {
	benchBytes(b, indexSizes, func(b *testing.B, n int) {
		buf := bmbuf[0:n]
		step := 8
		for i := 0; i < len(buf); i += step {
			buf[i] = 1
		}
		expect := (len(buf) + (step - 1)) / step
		for i := 0; i < b.N; i++ {
			j := Count(buf, []byte{1})
			if j != expect {
				b.Fatal("bad count", j, expect)
			}
		}