The Phonecode program was devised by Lutz Prechelt for comparing versions written in several programming languages.

An Empirical Comparison of Seven Programming Languages

http://page.mi.fu-berlin.de/prechelt/Biblio/jccpprtTR.pdf

The Gilda implementation consists of 5 files. The code is well commented and includes error handling to demonstrate the use of Gilda's exception handling mechanism. The partial.g procedure is an example of using a Sequence.

phonecode.clg      - The class file
phonecode.g        - Top level driver
load.dictionary.g  - Read in the dictionary file
encode.phone.g     - Print out phone number encodings
partial.g          - A sequence to match numeric prefixes

There are also two files that were automatically generated from "phonecode.g" using the new.gilda.exe program. The phonecode.clg; file was also generated and then modified by hand.

root.phonecode.g
help.phonecode.g

Here is a zip file with all the files, test data, and a Windows executable. If you feed illegal input into the program you will be able to see the exceptions being processed.

phonecode_gilda.zip