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Operator overload #1

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Operator overload #1

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321df57
[class] add operator overloading private method
JonathanOrr Aug 16, 2023
5b4f390
[class] add support for operator overloading
JonathanOrr Aug 16, 2023
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22 changes: 22 additions & 0 deletions class.lua
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Original file line number Diff line number Diff line change
Expand Up @@ -87,10 +87,32 @@ function Class:set(prop, value)
end
end

---perform operator overloading for an new object of a class
---@param class table
---@param obj table
local function opOverload(class, obj)
local opKeys = {
"__mode", "__tostring", "__len", "__pairs", "__ipairs", "__gc", "__name", "__close", --Special Operators
"__unm", "__add", '__sub', "__mul", "__div", "__idiv", "__mod", "__pow", "__concat", --Mathematic Operators
"__eq", "__lt", "__le", --Equivalence Comparison Operators
"__band", "__bor", "__bxor", "__bnot", "__shl", "__shr" --Bitwise Operators
}
local objMt = getmetatable(obj)
for _, operator in pairs(opKeys) do
if class[operator] then
objMt[operator] = class[operator]
end
end
end

-- create an instance of an object with constructor parameters
function Class:new(...)
local obj = self:extend({})
if obj.init then obj:init(...) end

-- overload operators
opOverload(self, obj)

return obj
end

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