The SCI Compiler

New with SCICompanion version 3, the compiler supports a syntax (which we’ll call Sierra Script) that is nearly identical to the original script that was used by Sierra.

SCI is an object-oriented language with message passing semantics (like Objective-C or SmallTalk). Syntactically, it looks a lot like LISP (due to the plethora of parentheses).

One difference that will be programmers familiar with C++, C# or java, is that expressions use Prefix notation instead of Infix notation. For instance, to add two numbers together and assign them to a variable in C#, might look like this:

// C#
int i = 5 + 6;

But in SCI script it looks like:

(= i (+ 5 6))

The topics below describe all the various language features and syntax.