The Gerris Object System
- Most aspects of Object-Oriented Programming (OOP), such as the existence of classes with their own methods and inheritance.
- The ability to interface to other programming languages. (As far as I know, this feature is not used in Gerris, but this has been exploited to give GTS Python bindings in PyGTS.)
To implement Object-Oriented Programming, Gerris/GTS uses its own ‘Object system’. This system is analogous to the GLib object system (GObject), but not identical to it.
THIS CHAPTER IS CURRENTLY BEING WRITTEN.
Note for dummies: pointers to functions
At this stage you (or your teacher if this is a live class) should recall the basic facts about pointers to functions. Remember in particular that
int foo(int bar);
declares a function of an integer returning an integer and
int (*ptr_foo) (int bar);
declares a pointer to an integer function. If we were to write
int *ptr_foo (int bar);
In that case, because
() has precedence over indirection
we would define a function of an integer returning a pointer to an integer.
(That C operator precedence table comes in handy here.)