Super tiny compiler, written in Ruby, using TDD.
100% covered with tests.
Converts Lispy expressions to C-like expressions like so:
| Operation | Lisp | C |
|---|---|---|
| 1 + 1 | (add 1 1) | add(1, 1) |
| 4 - 2 | (subtract 4 2) | subtract(4, 2) |
| 2 + (4 - 2) | (add 2 (subtract 4 2)) | add(2, subtract(4, 2)) |
Compilers generally consist of 3 main parts:
- Parsing
- Transformation
- Code Generation
Parsing consists of two parts:
- Lexical Analysis - takes raw code and splits it apart into tokens (check out
Tokenizer) - Syntactic Analysis - takes the tokens and reformats them into AST (check out
Parser)
Transformation consists of two parts:
- Traverser - traverseres the original AST and operates on it (check out
Traverser) - Transformer - transforms the original AST to another, suited for destination lanaguage (check out
Transformer)
Code generation consists of:
- Code Generator - converts the destination AST to runnable destination code (check out
Generator)
Install dependencies
bundle install
Run tests with
rake
This repo is basically a port of thejameskyle/the-super-tiny-compiler to Ruby. Definitely check it out for more thorough deep dive into compilers.
MIT