在语言C＃编译器写的？

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我看了看源代码在 referencesource.microsoft/ ，似乎所有的源代码在C＃。

I looked at the source code at referencesource.microsoft/, and it appears all the source code is in C#.

我也看了看源代码，新的C＃编译器平台（的罗斯林），它也是在C＃。这怎么可能？是C＃语言编译器C＃编写的？还是我失去了一些东西明显？如果C＃编译器是用C＃编写，然后它是如何工作的？

I also looked at the source code for the new C# compiler platform (Roslyn), and it is also in C#. How is that possible? Is C# language compiler written in C#? Or am I missing something obvious? If C# compiler is written in C# then how does it work?

推荐答案

原来的C＃编译器没有写在C＃中，在C和C ++。新的罗斯林编译器C＃语言编写的，但最初是与旧的编译器编译。一旦新的编译器做，它能够编译它自己的源代码：这就是所谓的引导。

The original C# compiler wasn't written in C#, it was in C and C++. The new Roslyn compiler was written in C#, but was initially compiled with the old compiler. Once the new compiler was done, it was able to compile its own source code: this is called bootstrapping.