HaasScript is a scripting language designed specifically for creating trading algorithms on HaasOnline platforms. While it shares similarities with Lua, it includes a range of custom functions and tools tailored for trading strategies. Converting existing code or logic from other programming languages to HaasScript is a common task for developers who want to leverage their existing strategies on the HaasOnline platform. This process involves understanding the differences and similarities between HaasScript and the source language, and then adapting the code accordingly.