-
Notifications
You must be signed in to change notification settings - Fork 1
/
m3nodebuilder.go
72 lines (60 loc) · 1.85 KB
/
m3nodebuilder.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
package pathdb
import (
"github.com/freddy33/qsm-go/m3util"
"github.com/freddy33/qsm-go/model/m3path"
)
type OpenNodeBuilder struct {
pathCtx *PathContextDb
d int
expectedSize int
openNodesMap ServerPathNodeMap
insertConflict int
}
func (pathCtx *PathContextDb) createCurrentNodeBuilder() (*OpenNodeBuilder, error) {
if pathCtx.currentNodeBuilder != nil {
return pathCtx.currentNodeBuilder, nil
}
lastNodes, err := pathCtx.GetPathNodesAt(pathCtx.GetMaxDist())
if err != nil {
return nil, err
}
if len(lastNodes) == 0 {
return nil, m3util.MakeQsmErrorf("cannot create open nodes builder from nothing at %s", pathCtx.String())
}
res := new(OpenNodeBuilder)
res.pathCtx = pathCtx
res.d = lastNodes[0].D()
res.expectedSize = m3path.CalculatePredictedSize(pathCtx.GetGrowthType(), res.d)
if res.expectedSize > 32 {
res.openNodesMap = MakeHashPathNodeMap(res.expectedSize)
} else {
res.openNodesMap = MakeSimplePathNodeMap(res.expectedSize)
}
for i := 0; i < len(lastNodes); i++ {
res.addPathNode(lastNodes[i].(*PathNodeDb))
}
pathCtx.currentNodeBuilder = res
return res, nil
}
func createNextNodeBuilder(previous *OpenNodeBuilder) *OpenNodeBuilder {
res := new(OpenNodeBuilder)
res.pathCtx = previous.pathCtx
res.d = previous.d + 1
res.expectedSize = m3path.CalculatePredictedSize(res.pathCtx.GetGrowthType(), res.d)
if res.expectedSize > 32 {
res.openNodesMap = MakeHashPathNodeMap(res.expectedSize)
} else {
res.openNodesMap = MakeSimplePathNodeMap(res.expectedSize)
}
return res
}
func (onb *OpenNodeBuilder) addPathNode(pn *PathNodeDb) *PathNodeDb {
res, _ := onb.openNodesMap.AddPathNode(pn)
return res
}
func (onb *OpenNodeBuilder) openNodesSize() int {
return onb.openNodesMap.Size()
}
func (onb *OpenNodeBuilder) hasPathNode(pn *PathNodeDb) bool {
return onb.openNodesMap.HasPathNode(pn.pathPoint.P)
}