什么是原生函数，我们可以直接调用它们吗？

Question

我在 Move 中遇到过 “原生函数” 一词，但找不到有关它的详细信息. 我听说它们是在 Move 中声明的，但是在外部定义的，通常是在 Rust 中. 这是否意味着它们是钱包或其他模块无法直接调用的内部函数？

BigDev · Answer

In Suis Move language, a native function is one you declare in a Move module but whose actual code lives outside in the underlying system, typically written in Rust for Sui’s virtual machine, handling low-level tasks like cryptography or system operations that Move’s high-level syntax can’t directly manage. You can call these functions directly from your Move code in other modules or scripts, just like regular Move functions, as long as they’re marked public and you import the module properly, so wallets and other contracts can use them without any special restrictions. For example, something like sui::hash::keccak256 is a native function you can call to hash data, and it’s accessible in your transactions or contracts as long as you reference it correctly. The catch is they’re predefined in Sui’s framework, so you can’t create your own native functions in Move; you’re limited to what the system provides, and their behavior depends on the Rust implementation. For more on how native functions work in Move and their usage

mssoni · Answer

Native functions in Move are indeed declared within the language but they dont have a body because theyre implemented outside of Move, usually in Rust. Despite this, if the native function is public, you can call it just like any other function. They arent restricted to internal use only. You can invoke them as long as the necessary permissions and public access are in place.

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什么是原生函数，我们可以直接调用它们吗？

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