d2/d2ir/merge.go
2024-11-24 10:45:06 -08:00

85 lines
1.9 KiB
Go

package d2ir
func OverlayMap(base, overlay *Map) {
for _, of := range overlay.Fields {
bf := base.GetField(of.Name)
if bf == nil {
base.Fields = append(base.Fields, of.Copy(base).(*Field))
continue
}
OverlayField(bf, of)
}
for _, oe := range overlay.Edges {
bea := base.GetEdges(oe.ID, nil, nil)
if len(bea) == 0 {
base.Edges = append(base.Edges, oe.Copy(base).(*Edge))
continue
}
be := bea[0]
OverlayEdge(be, oe)
}
}
func ExpandSubstitution(m, resolved *Map, placeholder *Field) {
fi := -1
for i := 0; i < len(m.Fields); i++ {
if m.Fields[i] == placeholder {
fi = i
break
}
}
for _, of := range resolved.Fields {
bf := m.GetField(of.Name)
if bf == nil {
m.Fields = append(m.Fields[:fi], append([]*Field{of.Copy(m).(*Field)}, m.Fields[fi:]...)...)
fi++
continue
}
OverlayField(bf, of)
}
// NOTE this doesn't expand edges in place, and just appends
// I suppose to do this, there needs to be an edge placeholder too on top of the field placeholder
// Will wait to see if a problem
for _, oe := range resolved.Edges {
bea := m.GetEdges(oe.ID, nil, nil)
if len(bea) == 0 {
m.Edges = append(m.Edges, oe.Copy(m).(*Edge))
continue
}
be := bea[0]
OverlayEdge(be, oe)
}
}
func OverlayField(bf, of *Field) {
if of.Primary_ != nil {
bf.Primary_ = of.Primary_.Copy(bf).(*Scalar)
}
if of.Composite != nil {
if bf.Map() != nil && of.Map() != nil {
OverlayMap(bf.Map(), of.Map())
} else {
bf.Composite = of.Composite.Copy(bf).(Composite)
}
}
bf.References = append(bf.References, of.References...)
}
func OverlayEdge(be, oe *Edge) {
if oe.Primary_ != nil {
be.Primary_ = oe.Primary_.Copy(be).(*Scalar)
}
if oe.Map_ != nil {
if be.Map_ != nil {
OverlayMap(be.Map(), oe.Map_)
} else {
be.Map_ = oe.Map_.Copy(be).(*Map)
}
}
be.References = append(be.References, oe.References...)
}