Version 1.0

Status for V2: Creating Parser (Hacked (S)LR Parser)

This Ruby script compiles the Extended Singmaster Notation for the Rubik's cube into a simpler notation. The Extended Singmaster Notation is further explained in notation.md. In the simplified notation, there are no parentheses, and a turn is always paired with the number of times the turn would be done. The grammar used for the lexer and the parser is in grammar.md. This compiler is originally written for the Cubing Analysis and Testing Suite (cats).

Here are some current issues with the project:

• Does not support face slice and anti-slice moves, conjugates, and commutators yet
• Has not been refactored and optimized therefore it has a lot of code smell and can be made shorter (possibly down to 200 lines from 413 lines).
• Can possibly skip and merge some steps like code optimization since the grammar is simple.
• Uses Ruby, which might be an issue for some people due to it being an interpreted language.
• Determining the modularity/period of an algorithm can make the program compile faster.
• Has not been tested or validated fully yet

The compiler is originally written for software that doesn't use Ruby, so it requires an external file called '.input' that contains a string of moves. The output would be the simplified string of moves stored in the file '.output'. It is important to note that the program deletes the input file afterwards.

This project is licensed under the BSD 3-Clause Clear License (License.MD would be uploaded later).