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* luci/libs: In luci.ip: __array16() does assert() already, so drop redundant sanity checks in add() and sub()

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Jo-Philipp Wich 2008-08-09 18:59:37 +00:00
parent ba298a020b
commit 2787a7f688
1 changed files with 18 additions and 22 deletions
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40
libs/core/luasrc/ip.lua
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@ -551,19 +551,17 @@ function cidr.add( self, amount, inplace )
local data = { unpack(self[2]) }
local shorts = __array16( amount, self[1] )
if shorts then
for pos = #data, 1, -1 do
local add = ( #shorts > 0 ) and table.remove( shorts, #shorts ) or 0
if ( data[pos] + add ) > 0xFFFF then
data[pos] = ( data[pos] + add ) % 0xFFFF
if pos > 1 then
data[pos-1] = data[pos-1] + ( add - data[pos] )
else
return nil
end
for pos = #data, 1, -1 do
local add = ( #shorts > 0 ) and table.remove( shorts, #shorts ) or 0
if ( data[pos] + add ) > 0xFFFF then
data[pos] = ( data[pos] + add ) % 0xFFFF
if pos > 1 then
data[pos-1] = data[pos-1] + ( add - data[pos] )
else
data[pos] = data[pos] + add
return nil
end
else
data[pos] = data[pos] + add
end
end
@ -584,19 +582,17 @@ function cidr.sub( self, amount, inplace )
local data = { unpack(self[2]) }
local shorts = __array16( amount, self[1] )
if shorts then
for pos = #data, 1, -1 do
local sub = ( #shorts > 0 ) and table.remove( shorts, #shorts ) or 0
if ( data[pos] - sub ) < 0 then
data[pos] = ( sub - data[pos] ) % 0xFFFF
if pos > 1 then
data[pos-1] = data[pos-1] - ( sub + data[pos] )
else
return nil
end
for pos = #data, 1, -1 do
local sub = ( #shorts > 0 ) and table.remove( shorts, #shorts ) or 0
if ( data[pos] - sub ) < 0 then
data[pos] = ( sub - data[pos] ) % 0xFFFF
if pos > 1 then
data[pos-1] = data[pos-1] - ( sub + data[pos] )
else
data[pos] = data[pos] - sub
return nil
end
else
data[pos] = data[pos] - sub
end
end