Squirrel programming language
From Freepedia
Squirrel Squirrel Squirrel is a high level imperative/OO programming language, designed to be a light-weight scripting language that fits in the size, memory bandwidth, and real-time requirements of applications like video games.
Contents |
Language features
- dynamic typing
- delegation
- classes & inheritance
- higher order functions
- generators
- cooperative threads(coroutines)
- tail recursion
- exception handling
- automatic memory management (primarly reference counting with backup garbage collector)
- weak references
- both compiler and virtual machine fit together in about 6k lines of C++ code.
- optional 16bits characters strings
Syntax
Squirrel uses a C-like syntax
Factorial in Squirrel:
function factorial(x)
{
if (x == 0) {
return 1;
}
else {
return x * factorial(x-1);
}
}
Random numbers using generators:
function gen_random(max) {
local last=42
local IM = 139968;
local IA = 3877;
local IC = 29573;
for(;;) { //loops forever
yield (max * (last = (last * IA + IC) % IM) / IM);
}
}
local randtor = gen_random(100);
for(local i = 0; i < 10; i += 1)
print(">"+resume randtor+"\n");
classes and inheritance:
class BaseVector {
constructor(...)
{
if(vargc >= 3) {
x = vargv[0];
y = vargv[1];
z = vargv[2];
}
}
x = 0;
y = 0;
z = 0;
}
class Vector3 extends BaseVector {
function _add(other)
{
if(other instanceof this.getclass())
return ::Vector3(x+other.x,y+other.y,z+other.z);
else
throw "wrong parameter";
}
function Print()
{
::print(x+","+y+","+z+"\n");
}
}
local v0 = Vector3(1,2,3)
local v1 = Vector3(11,12,13)
local v2 = v0 + v1;
v2.Print();
History
The language was made public in 2003 under zlib/libpng licence is developed and maintained by Alberto Demichelis.
See also
External links
Categories: Procedural programming languages | Programming languages | Object-oriented programming languages | Scripting languages | Computer language stubs
