isourclosure

Overview of the isourclosure function.

Function Characteristics

This function is pure; it does not modify any data when called.

Function definition

function isourclosure(closure: (...any) -> (...any)): boolean

High-Level Overview

Validates that the provided closure is originating from the executor.

Low-Level Overview

The Luau compiler or the luau_load function are overridden to replace the line defined of every proto to -1. This allows us to validate if the Luau closure is originating from the executor.

For C closures, their c.f is checked; if it is within the .text section of ROBLOX, then it is not our function; if it isn't, however, then it is ours, as there is no way we have another DLL messing us up.

This makes checking the C closure's simple pointer mathematics and is much cheaper than keeping an entire function hashset or vector.