Method EvaluateCondition

source/script.cpp:10596–10610

ResultType Line::EvaluateCondition()
// Returns CONDITION_TRUE or CONDITION_FALSE (FAIL is returned only in DEBUG mode).
{
#ifdef _DEBUG
	if (mActionType != ACT_IF)
		return LineError(_T("DEBUG: EvaluateCondition() was called with a line that isn't a condition."));
#endif

	// The following is ordered for short-circuit performance.
	Var *var = mArg[0].type == ARG_TYPE_INPUT_VAR ? VAR(mArg[0]) : nullptr;
	bool if_condition = var ? VarToBOOL(*var) // Not verified recently: 30% faster than having ExpandArgs() resolve ARG1 even when it's a naked variable.
		: ResultToBOOL(ARG1); // CAN'T simply check *ARG1=='1' because the loadtime routine has various ways of setting if_expresion to false for things that are normally expressions.

	return if_condition ? CONDITION_TRUE : CONDITION_FALSE;
}