This post is part of the Introduction to parsing series. In the last part we have worked on some preliminary changes to our parser to handle variables. In this part, we will actually make our parser understand variables! Grammar changes and more lookahead tokens After a couple of clean-up commits, we are ready to start extending our parser. The grammar is currently this: program: [end-of-line]* [expression end-of-line+]* expression: term [ ('+'|'-') term ]*; term : factor [ ('*'|'/') factor]*...
