[Mono-devel-list] MSVB conversion from C# to Mbas status

[Manjula G H M]

Dennis, 

Good to see your progress.

We are fixing lot of bugs (these bugs are not filled in bugzilla. We
develop test cases and run and fix bugs as we come across and check in
to SVN) related to Conversions. We are also focusing on expressions as
it is not 100% complete. Please make sure you won't duplicate the
effort.  

Appreciate if you can sync up with us before you take up.

Thanks
Manjula

>>> Dennis Hayes <denisraytek at yahoo.com> 02/22/05 12:10 PM >>>

These 28 files convert easily

AppWinStyle.vb
AssemblyInfo.vb
BooleanType.vb
ByteType.vb
CallType.vb
ComClassAttribute.vb
CompareMethod.vb
DateFormat.vb
DateInterval.vb
DateType.vb
DefaultArgumentValueAttribute.vb
DoubleType.vb
DueDate.vb
FirstDayOfWeek.vb
FirstWeekOfYear.vb
Globals.vb
MsgBoxResult.vb
MsgBoxStyle.vb
OpenMode.vb
OptionCompareAttribute.vb
OptionTextAttribute.vb
SpcInfo.vb
StandardModuleAttribute.vb
TabInfo.vb
TODOAttribute.vb
VBErrors.vb
VBFixedArrayAttribute.vb
VBFixedStringAttribute.vb

 

these 48 require significant effort (or depend on another file that
requires effort)

BaseVBFile.vb
BinaryVBFile.vb
CallType.vb
CharArrayType.vb
CharType.vb
Collection.vb
Constants.vb
ControlChars.vb
Conversion.vb
DateAndTime.vb
DecimalType.vb
ErrObject.vb
ExceptionUtils.vb
FileAttribute.vb
FileSystem.vb
Financial.vb
FlowControl.vb
ForEachEnum.vb
HostServices.vb
IncompleteInitialization.vb
Information.vb
InputVBFile.vb
IntegerType.vb
Interaction.vb
IVbHost.vb
LateBinding.vb
LongType.vb
MsgBoxStyle.vb
ObjectType.vb
OpenAccess.vb
OpenMode.vb
OpenShare.vb
OutPutVBFile.vb
ProjectData.vb
RandomVBFile.vb
ShortType.vb
SingleType.vb
StaticLocalInitFlag.vb
Strings.vb
StringType.vb
TriState.vb
Utils.vb
VariantType.vb
VBBinder.vb
VBFile.vb
VBMath.vb
VbStrConv.vb
VBUtils.vb

Top issues uncovered thus far

1) Mbas does not yet support #ifdef, easy to work around.

2) The converter converts else if to else if, works in VB, mbas
requires single word elseif, easy to work around. The converter could do
a better job on this as well.

3) Basic keywords used as variable names (example type enum has String
as an entry)

4) Neither VB nor mbas supports some abstract get's. I think. I have
not looked into these errors at all.

5) Some files crash mbas with internal compiler errors. Some or all of
these could be caused by illeage syntax in the converted code.

6) Default objects cause errors. Could be mbas, the converter, or just
something that needs to be done by hand. (*.Length* is used with out an
object i.e. not myobject.Length. In foreach loops?).

7) Assignments in expressions myfunction(x += 5). These will be some of
the first changes I make in the C# code.

8) In at least one case, the converter uses the MSVB function it is
converting to do the converting. WE use Cint(mychar) in a char to int
conversion. The Cint function is replaced with the MSVB function. I
expect to replace this with a call to System.Convert, with changes as
needed to get the same behavior.

9) Some classes have no namespace declared.

10) Some classes import/uses their own namespace.

It will probably be a week or two before I do much more on this. At
that point, I will probably fix #7, 8, 9, 10 in the SVN C# code, and
file some bugs with the converter tool people.

Feasibility:

1) Looks good at some point.

2) Maturity of mbas will be the key constraint

3) At some point I will (should ;)) make test cases for related mbas
issues.

4) The tool does a good job of doing most of the conversion. Issues
with mbas and the tool require some easy work arounds. Fewer than a
dozen tough problems appear repeatedly.

Dennis

 

 

 


 


		
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