len.lua

-- This Script is Part of the Prometheus Obfuscator by levno-710
--
-- len.lua
--
-- This Script contains the expression handler for the LenExpression

local Ast = require("prometheus.ast");

return function(self, expression, funcDepth, numReturns)
    local scope = self.activeBlock.scope;
    local regs = {};
    for i = 1, numReturns do
        regs[i] = self:allocRegister();
        if i == 1 then
            local rhsReg = self:compileExpression(expression.rhs, funcDepth, 1)[1];

            self:addStatement(self:setRegister(scope, regs[i], Ast.LenExpression(self:register(scope, rhsReg))), {regs[i]}, {rhsReg}, true);
            self:freeRegister(rhsReg, false);
        else
            self:addStatement(self:setRegister(scope, regs[i], Ast.NilExpression()), {regs[i]}, {}, false);
        end
    end
    return regs;
end;