807// Other math operations...
case DC_CALL_SCRIPT_LAMBDA:
{
// Determine in which register the name of
// the script lambda to call is stored.
// (Presumably it was loaded by a previous
// load instr.)
U32 iReg = instr.GetSrcRegisterIndex();
// Grab the appropriate register, which
// contains the name of the lambda to call.
Variant& lambda
= pCurStackFrame->GetRegister(iReg);
// Look up the byte code of the lambda by
// name.
DCByteCode* pCalledCode
= DcLookUpByteCode(lambda.AsStringId());
// Now "call" the lambda by pushing a new
// stack frame.
if (pCalledCode)
{
pCurStackFrame
= DcPushStackFrame(pCalledCode);
}
}
break;case DC_RETURN:
{
// Just pop the stack frame. If we’re in
// the top lambda on the stack, this
// function will return NULL, and the loop
// will terminate.
pCurStackFrame = DcPopStackFrame();
}
break;// Other instructions...// ...
} // end switch
} // end for
}In the above example, we assume that the global functions DcPushStack
Frame() and DcPopStackFrame() manage the stack of register banks for us
14.8. Scripting