El máster

Lo he leído aquí  porque lo contaban aquí como un momento PQC.

The first C++ compiler (Cfront) was written in C++. To build that, I first used C to write a “C with Classes”-to-C preprocessor. “C with Classes” was a C dialect that became the immediate ancestor to C++. That preprocessor translated “C with Classes” constructs (such as classes and constructors) into C. It was a traditional preprocessor that didn’t understand all of the language, left most of the type checking for the C compiler to do, and translated individual constructs without complete knowledge. I then wrote the first version of Cfront in “C with Classes”.

Cfront was a traditional compiler that did complete syntax and semantic checking of the C++ source. For that, it had a complete parser, built symbol tables, and built a complete internal tree representation of each class, function, etc. It also did some source level optimization on its internal tree representation of C++ constructs before outputting C. The version that generated C, did not rely on C for any type checking. It simply used C as an assembler. The resulting code was uncompromisingly fast. For more information, see D&E.