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util.array: Take advantage of table.move()

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This commit is contained in:
Matthew Wild 2022-03-18 15:22:00 +00:00
parent 26605b5197
commit 22cc92f437
1 changed files with 6 additions and 10 deletions
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16
util/array.lua
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@ -8,6 +8,7 @@
local t_insert, t_sort, t_remove, t_concat
= table.insert, table.sort, table.remove, table.concat;
local t_move = require "util.table".move;
local setmetatable = setmetatable;
local getmetatable = getmetatable;
@ -137,13 +138,11 @@ function array_base.slice(outa, ina, i, j)
return outa;
end
for idx = 1, 1+j-i do
outa[idx] = ina[i+(idx-1)];
end
t_move(ina, i, j, 1, outa);
if ina == outa then
for idx = 2+j-i, #outa do
outa[idx] = nil;
end
-- Clear (nil) remainder of range
t_move(ina, #outa+1, #outa*2, 2+j-i, ina);
end
return outa;
end
@ -209,10 +208,7 @@ function array_methods:shuffle()
end
function array_methods:append(ina)
local len, len2 = #self, #ina;
for i = 1, len2 do
self[len+i] = ina[i];
end
t_move(ina, 1, #ina, #self+1, self);
return self;
end