NewCommand returns a new Command.

NewGie returns a new Gie object.

NewParser creates a Parser object and runs the parser The parser runs one line at time.

Command holds a set of testcases As the gie file is read, the current Command object gets modified, testcases get added, etc.

Gie is the top-level object for the Gie test runner Gie manages reading and parsing the .gie files and then executing the commands and their testcases.

Parser reads the .gie files and returns the list of commands it constructed.