Implement step in and step out

[shanedell]

Description

Implement step in and step out

• Renamed step to stepOver to make it more specific what is going on.
• Implemented step in and step out logic.
• Made stepIn do what step, now stepOver, was doing.

Closes #5
Closes #1089

Wiki

• I have determined that no documentation updates are needed for these changes
• I have added following documentation for these changes

Review Instructions including Screenshots

Ensure that stepOver, stepIn and stepOut all work when clicked. Also ensure they do the proper actions

[shanedell]

@stevedlawrence and/or @mbeckerle would you mind testing this update out? I am not fully confident if all the step functions behave as they should and would appreciate any feedback or assistance you can provide me.

[stevedlawrence]

I'll try to take a look this week. Can you describe what the intended behavior of stepIn, stepOut, and stepOver is? I know there's been discussions about it but I'm not sure what was finally decided on and want to make sure I'm on the same page when playing around with it.

[shanedell]

I basically tried to do what you had stated before in an email. I have it pasted here in issue #5. But basically:

"step-in" would just be the current behavior and pause at every hook

"step" would capture the current top of the stack and cause all hooks to do
nothing until the endElement hook sees that element

"step-out" would capture the second element in the stack (i.e. the parent of the
current element) and cause all hooks to do nothing until the end element for
that element is seen

I am not sure if there was anything formally decided, I mostly went with you had stated since you would know better how it could be done or what was possible with Daffoidl.

[lrbarber]

In my initial testing, there seems to be some disconnect between the displayed current schema location and the contents of the infoset. The location indicator seems to jump ahead a step or two before the infoset is updated.
The step into function seems to sometimes jump ahead as if doing a step over or step out.
The step out seems to be delayed by a step or two, but then doesn't quite exit the current element.

[shanedell]

@stevedlawrence If you would have time this week could you possibly take a look at this? I would value your feedback greatly on where this is at

[mbeckerle]

+0 I guess I'm going to have to read @arosien 's book on Cats Effect and really study it to be able to grok this code. I can't understand this well enough to review it effectively.

[shanedell]

@lrbarber Can you give this another look when you have a chance and provide any feedback on what you are seeing? Meaning is step in, step out and step over behaving how you would expect? If not can you describe what you are expecting versus what is actually happening? Thank you

[lrbarber]

The gif schema looks to be a good example to use while testing step-in/out/over.

https://github.com/DFDLSchemas/GIF/blob/master/src/main/resources/com/mitre/gif/xsd/gif.dfdl.xsd

...and here's a sample gif file to parse: