Re: warning compiling math_data.C

[Angus Leeming]

Andre Poenitz wrote:

> On Fri, Nov 01, 2002 at 04:32:14PM +0000, Angus Leeming wrote:
>> André, I have a warning when compiling math_data.C. Wouldn't it be more
>> elegant/comprehensible to define a MathCursor::npos if you're saying that
>> the value is now invalid?
> 
> Why not. Apply it if you want (I am off now for the weekend).
> 
> Andre'

I won't do that because I'm not at all sure that this code is safe if it 
receives
        size = (size_type)-1;
Should you not add a test that size is valid? What should you do if it 
isn't?

Angus


void MathCursor::adjust(pos_type from, size_type size)
{
        if (cursor().pos_ > from)
                cursor().pos_ += size;
        if (Anchor_.back().pos_ > from)
                Anchor_.back().pos_ += size;
        // just to be on the safe side
        // theoretically unecessary
        normalize();
}