Install libopentoken-doc by entering the following commands in the terminal:
sudo apt update sudo apt install libopentoken-doc
OpenToken lexical analysis library for Ada: documentation
OpenToken is a facility for performing token analysis within the Ada language. It is designed to provide all the functionality of a traditional lexical analyzer generator, such as lex. But due to the magic of inheritance and runtime polymorphism it is implemented entirely in Ada as withed-in code. No precompilation step is required, and no messy tool-generated source code is created. . This package contains the documentation.