ponymix: validate arg count before invoking function

A few changes make this fun and easy:

- Merge the function array into the string to action lookup and return a
  Command instead of simply an enum. A Command is the function and the
  min/max arg count.
- Implement an InRange method for the Range class.
- Add a Dispatch function to convert the string to Command and validate
  the arguments.

This leaves us in a position where the argc parameter to each method is
never used, but maybe some day a command will be added that takes a
range of args rather than a fixed number.

0 files changed, 0 insertions, 0 deletions