ASSIGNMENT: Abstract syntax

Using the template for the 3rd assignment, you should write the code for construction of the abstract syntax trees.

You must upload your solution as a ZIP file named xxxxxxxx-abstr.zip, where xxxxxxxx represents your student identification number. The contents of the uploaded ZIP file must follow the exact directory structure of the template. The ZIP file must contain the complete source distribution (including previous phases) but should exclude ANTLR and generated files.