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Merge pull request #64 from TurtleP/turtlep/assert_one_of

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add `assert:one_of`
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Max Cahill 2023-03-21 14:39:58 +11:00 committed by GitHub
commit 3421c93848
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1 changed files with 15 additions and 0 deletions
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15
assert.lua
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@ -82,6 +82,21 @@ function assert:type_or_nil(a, t, msg, stack_level)
return a return a
end end
--assert a value is one of those in a table of options
function assert:one_of(a, t, msg, stack_level)
for _, value in ipairs(t) do
if value == a then
return a
end
end
error(("assertion failed: %s not one of %s %s"):format(
tostring(a),
table.concat(t, ", "),
_extra(msg)
), 2 + (stack_level or 0))
end
--replace everything in assert with nop functions that just return their second argument, for near-zero overhead on release --replace everything in assert with nop functions that just return their second argument, for near-zero overhead on release
function assert:nop() function assert:nop()
local nop = function(_, a) local nop = function(_, a)