is there a simple compiler for a small language

Question

I am looking for a simple compiler that compiles a simple language, I need it to write a paper about it and to learn how compilers work, I am not looking for a sophisticated thi

Answer 1

Look at the simple compiler for PL/0 (a small pascal-like subset - no parameters, only integer data). The source, written in Pascal, is only about 500 lines of code, and is easy to follow. This may be all you need to look at.

However, if you want to go a little farther, once you are comfortable with that, look at the source to Pascal-S. This is a compiler for a larger subset of Pascal, but includes some additional concepts, such as parameter passing, additional data types, and arrays and records (structures). Still it is only about 2000 lines of code, and is easy to follow once you have mastered PL/0.

You can find the sources here:

http://standardpascal.org/source.html