#611 Create a try-catch statement

[Erik Hänel]

Create a try-catch statement, which can be used to catch errors. Something like

try
## some code
catch (ERRORTYPE)
## handle here
catch (OTHER ERROR TYPE)
## handle here
endtry

Analysis:

The try-catch statement can be implemented as flow ctrl statement with some logical adaptions. Furthermore, we'll have to select the error types, which can be catched by this statement. As syntax, we'll use

try
     ## some code
catch expression:  ## catch errors of type "expression" here
     ## handle these errors
catch:  ## catch all other catchable errors here
     {sType, sMessage} = getlasterror(); ## Get type and message
     warn sMessage  ## do something with the information
     rethrow;  ## rethrow the handled error
endtry

Implementation:

• Implementation: Implemented as proposed by the analysis.
• Revision: [r1018] and [r1019]
• Implementation test: Code segments with try...catch , getlasterror() and rethrow were executed.

Documentation:

• ChangesLog updated
• Code changes commented
• Documentation articles:
  • corresponding documentation articles updated
  • new documentation articles created
  • not needed
• Language files:
  • corresponding language files updated
  • not needed

Tests:

Functionality was added to the automatic SW tests. No deviations detected.