Formal-Languages

Lecture notes and examples for my class on formal languages and compilers.

Docker (Experimental Feature)

The notebooks available in this repository can be run via Docker. In order to be able to store changes made to these notebooks it is beneficial to create a local directory Solutions that will be linked to the directory Python/Personal-Solutions. The permissions of the directory Solutions need to be set to 777. For example, with linux creating this directory and setting the permissions is achieved with the following commands:

    cd
    mkdir Solutions
    chmod 777 Solutions

Then, in order to change a file in the docker container and have the changes persist, inside the docker container the file has to be copied to Python/Personal-Solutions.

The docker image can be downloaded via the following command:

    docker pull karlstroetmann/formal-languages

After that, the container can be started as follows:

docker run -p 8888:8888 -v /Users/yourname/Solutions/:/home/jovyan/Python/Personal-Solutions karlstroetmann/formal-languages

Note that you have to replace the directory /Users/yourname with your home directory. Unfortunately, you cannot specify your home directory as ~, since Docker does not understand this notation.

To connect to the container, enter the adress localhost:8888 into your browser. You will then be asked for a token. You find this token in the message that is displayed by the docker run ... command executed previously.

Important notes:

• FileNotFoundError: [Errno 2] No such file or directory: 'xdg-open': Set .render(view=False), because files can not be opened automatically
• antlr4 command is available
• The path to antlr4.jar is /home/jovyan/.local/antlr-4.8-complete.jar