history_payload.go RawHistoryFolder

1package vt
2
3import renderer "github.com/bnema/vev-vt/core"
4
5func (c *HistoryChunk) recordPayloads() {
6	frame := c.frameView()
7	var last map[renderer.CellPayload]int
8	for row := range c.count {
9		for x := range c.width {
10			p := frame.Cell(x, c.start+row).Payload
11			if p.Empty() {
12				continue
13			}
14			if last == nil {
15				last = make(map[renderer.CellPayload]int)
16			}
17			last[p] = c.start + row
18		}
19	}
20	c.payloadBytes = 0
21	c.payloadDrops = nil
22	if len(last) == 0 {
23		return
24	}
25	c.payloadDrops = make([]uint64, frame.Height)
26	for value, row := range last {
27		bytes := value.LogicalBytes()
28		c.payloadBytes += bytes
29		c.payloadDrops[row] += bytes
30	}
31}
32
33func (c *HistoryChunk) withoutFirstRow() *HistoryChunk {
34	payloadBytes := c.payloadBytes
35	if len(c.payloadDrops) != 0 {
36		payloadBytes -= c.payloadDrops[c.start]
37	}
38	return &HistoryChunk{
39		page: c.page, start: c.start + 1, count: c.count - 1, width: c.width,
40		bounds: c.bounds[1:], rowIDs: c.rowIDs[1:],
41		styleDrops: c.styleDrops, styleCount: c.styleCount - c.styleDrops[c.start],
42		payloadDrops: c.payloadDrops, payloadBytes: payloadBytes,
43	}
44}
45
46func (h *History) recordPayloadScratch(p renderer.CellPayload) {
47	if p.Empty() {
48		return
49	}
50	if h.payloadScratch == nil {
51		h.payloadScratch = make(map[renderer.CellPayload]struct{})
52	}
53	h.payloadScratch[p] = struct{}{}
54}
55
56func (h *History) rowPayloadBytes() uint64 {
57	var n uint64
58	for p := range h.payloadScratch {
59		n += p.LogicalBytes()
60	}
61	return n
62}