Improved expression framework skeleton.
Parsed array assignment.
Teach the AST pretty printer to print the grammar rule.
Teach the AST viewer to print grammar rules.
Introduced array expressions.
Renamed IdentifierExpr to ScalarIdentifierExpr.
Parsed expressions.
Fixed class Id for AssignStatementAST.
Commented code about expressions parsing.
Parsed read statements.
Parsed write statement.
Improved ParsingStack debugging facilities.
Removed a debug call.
The parsing stack dispose unstacked frames at destruction-time.
Added a comment to ParsingStack.
Use ParsingStack everywhere possible.
Fist version of a table printer.
Put a comment about how parsing frames should be printed.
Integrated pr-rendering inside TablePrinter.
Use an utility class to print a parsing stack.