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Replace literals with leafCellHeaderSize

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This commit is contained in:
Ben Johnson 2020-11-19 14:18:53 -07:00
parent d125c68275
commit a9831ad5a1
1 changed files with 8 additions and 8 deletions
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16
rbf/rbf.go
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@ -490,11 +490,11 @@ func readLeafCell(page []byte, i int) leafCell {
switch cell.Type {
case ContainerTypeArray:
cell.Data = buf[18 : 18+(cell.ElemN*2)]
cell.Data = buf[leafCellHeaderSize : leafCellHeaderSize+(cell.ElemN*2)]
case ContainerTypeRLE:
cell.Data = buf[18 : 18+(cell.ElemN*4)]
cell.Data = buf[leafCellHeaderSize : leafCellHeaderSize+(cell.ElemN*4)]
case ContainerTypeBitmapPtr:
cell.Data = buf[18 : 18+4]
cell.Data = buf[leafCellHeaderSize : leafCellHeaderSize+4]
default:
}
@ -517,11 +517,11 @@ func readLeafCellBytesAtOffset(page []byte, offset int) []byte {
switch typ {
case ContainerTypeArray:
return buf[:18+(n*2)]
return buf[:leafCellHeaderSize+(n*2)]
case ContainerTypeRLE:
return buf[:18+(n*4)]
return buf[:leafCellHeaderSize+(n*4)]
case ContainerTypeBitmapPtr:
return buf[:18+4]
return buf[:leafCellHeaderSize+4]
default:
panic(fmt.Sprintf("invalid cell type: %d", typ))
}
@ -554,8 +554,8 @@ func writeLeafCell(page []byte, i, offset int, cell leafCell) {
*(*uint32)(unsafe.Pointer(&page[offset+8])) = uint32(cell.Type)
*(*uint16)(unsafe.Pointer(&page[offset+12])) = uint16(cell.ElemN)
*(*uint32)(unsafe.Pointer(&page[offset+14])) = uint32(cell.BitN)
assert(offset+18+len(cell.Data) <= PageSize) // leaf cell write extends beyond page
copy(page[offset+18:], cell.Data)
assert(offset+leafCellHeaderSize+len(cell.Data) <= PageSize) // leaf cell write extends beyond page
copy(page[offset+leafCellHeaderSize:], cell.Data)
}
// branchCell represents a branch cell.