Calling a function

To call a squirrel function it is necessary to push the function in the stack followed by the parameters and then call the function sq_call. The function will pop the parameters and push the return value if the last sq_call parameter is >0.

sq_pushroottable(v);
sq_pushstring(v,“foo”,-1);
sq_get(v,-2); //get the function from the root table
sq_pushroottable(v); //’this’ (function environment object)
sq_pushinteger(v,1);
sq_pushfloat(v,2.0);
sq_pushstring(v,”three”,-1);
sq_call(v,4,SQFalse);
sq_pop(v,2); //pops the roottable and the function
		

this is equivalent to the following Squirrel code

foo(1,2.0,”three”);

If a runtime error occurs (or a exception is thrown) during the squirrel code execution the sq_call will fail.