Make sure that python3 is installed. Depending on the default python version of your distribution you might need to install the python package or the python3 package.
For Ubuntu 18.04: apt-get install python3
You can check the python version with -V. Try python -V or python3 -V.
Furthermore, we need the python package ply that provides a lexer. You can
install it via your package manager or via pip.
-
On Ubuntu:
apt-get install python3-ply -
Via pip:
pip3 install --user ply
Download and install python3. Recommended way is to use Homebrew as a package manager for Mac.
-
Install XCode (or XCode Developer Tooling):
xcode-select --install -
Install Homebrew:
/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install) -
Install Python3:
brew install python3 -
Install pip:
brew install pip3 -
After the installer completed open a new terminal and install
plywith the following command:pip3 install --user ply
Download and install python3 (https://www.python.org/ftp/python/3.7.3/python-3.7.3.exe). Make sure to add python to the PATH when the installer asks.
After the installer completed, open a command line to install ply with the
following command: pip install --user ply
To run the compiler, open a command line and navigate to the parent directory
of the directory containing this file. You can pass a programm to the compiler
using the echo command and the pipe operaor:
echo "(2+3)*5" | python -m <package>.main
Thereby, <package> is a placeholder for the directory that contains the main
module that you want to execute. In the first tutorial, this will be
ll_parser.main. For instance:
cd <path/to/this/directory>
cd ..
echo "3*9" | python -m ll_parser.main
Depending on your distribution, you might need to run python3 instead of
python.