Method ArgIndexLength

source/script.cpp:6972–7002

size_t Line::ArgIndexLength(int aArgIndex)
// This function is similar to ArgToInt(), so maintain them together.
// "ArgLength" is the arg's fully resolved, dereferenced length during runtime.
// Callers must call this only at times when sArgDeref and sArgVar are defined/meaningful.
// Caller must ensure that aArgIndex is 0 or greater.
// ArgLength() was added in v1.0.44.14 to help its callers improve performance by avoiding
// costly calls to _tcslen() (which is especially beneficial for huge strings).
{
#ifdef _DEBUG
	if (aArgIndex < 0)
	{
		LineError(_T("DEBUG: BAD"), WARN);
		aArgIndex = 0;  // But let it continue.
	}
#endif
	if (aArgIndex >= mArgc) // Arg doesn't exist, so don't try accessing sArgVar (unlike sArgDeref, it wouldn't be valid to do so).
		return 0; // i.e. treat it as the empty string.
	if (!mArg[aArgIndex].is_expression && mArg[aArgIndex].postfix)
	{
		// This is a simple constant value or variable reference.
		switch (mArg[aArgIndex].postfix->symbol)
		{
		case SYM_STRING:
			return mArg[aArgIndex].postfix->marker_length;
		case SYM_VAR:
			return mArg[aArgIndex].postfix->var->Length();
		}
	}
	// Otherwise, length isn't known, so do it the slow way.
	return _tcslen(sArgDeref[aArgIndex]);
}