理论：JIT编译器可以先解析整个程序，然后再执行吗？
通常，JIT编译器的工作原理是读取字节代码，将其翻译为机器代码，然后执行。这是我的理解，但理论上，是否可以让JIT编译器先解析整个程序，然后再将程序作为机器代码执行？我不知道 JIT 编译器在技术上和具体上是如何工作的，所以我不知道在这种情况下有任何可行性。但理论上可能吗？还是我做错了？
Normally, JIT Compiler works by reads the byte code, translate it into machine code, and execute it. This is what I understand, but in theory, is it possible to make the JIT Compiler parses the whole program first, then execute the program later as machine code? I do not know how JIT Compiler works technically and exactly, so I don't know any feasibility in this case. But theoretically, is it possible? Or am I doing it wrong?
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正如 Mehrdad 所说，它不再是 JIT 编译器，但是，是的，您可以提前编译。在 .NET 中，他们有一个名为 ngen.exe 的工具 就是这样做的。
As Mehrdad said, it's no longer a JIT compiler, but yes, you can compile ahead of time. In .NET they have a tool called ngen.exe which does just this.
不，这是不可能的，原因很简单，“JIT”意味着“Just-In-Time”，如果你不这样做“Just-In-Time”，那么它就不是“Just-In-Time”编译器。
这就像问是否可以购买一辆红色但蓝色的汽车一样。
您要求的是一个提前编译器，通常简称为编译器。
No, this is not possible, for the simple reason that "JIT" means "Just-In-Time" and if you don't do it "Just-In-Time", then it's not a "Just-In-Time" compiler.
That's like asking whether it would be possible to buy a red car, but in blue.
What you are asking for, is an Ahead-Of-Time compiler, which is usually just called a compiler.
是的，这是可能的，但它通常不再称为 JIT 编译。它本质上是提前（AOT）编译。
Yes, it's possible, but it's usually not called JIT compilation anymore. It's essentially ahead-of-time (AOT) compilation.