[Laszlo-dev] For Review: Change 20071029-dda-s Summary: support try/catch/finally and throw statements in SWF7/8

[Donald Anderson]

Hi John,

This is standard Javascript that we just didn't support in SWF7/8 up  
to now.

For test cases, if you're talking about a .lzx file in the test  
directory,
that illustrates how to use the language feature and proves that it  
works,
I can do that.  If there's something else you have in mind, let me know.

- Don

On Oct 30, 2007, at 9:49 AM, John Sundman wrote:

> Are there test cases?  If not, please add at least one.
>
> What level of documentation is needed for this?  Is this standard  
> JavaScript, or an LZX enhancement?  If it's not standard  
> Javascript, then I expect we'll need to explain the concept, since  
> not all LZX developers can be expected to be familiar with Java and  
> other languages that support try/catch.
>
> Thanks,
>
> jrs
>
>
>
> On Oct 29, 2007, at 11:36 PM, Donald Anderson wrote:
>
>> Change 20071029-dda-s by dda at freddie.local on 2007-10-29 22:24:27 EDT
>>     in /Users/dda/laszlo/src/svn/openlaszlo/trunk
>>     for http://svn.openlaszlo.org/openlaszlo/trunk
>>
>> Summary: support try/catch/finally and throw statements in SWF7/8
>>
>> New Features: try/catch/finally supported in SWF7/8.
>>
>> Bugs Fixed:  LPP-1539
>>
>> Technical Reviewer: ptw
>> QA Reviewer: maxcarlson
>> Doc Reviewer: (pending)
>>
>> Documentation:
>>
>> Release Notes:
>>     try, catch, finally, throw statements are now supported in  
>> SWF7/8 as well as DHTML
>>     runtimes.
>>
>> Details:
>>     try/catch/finally are very helpful in creating a reliable  
>> software.
>>     It should help in consolidating/maintaining code in the  
>> runtime kernel,
>>     since DHTML already supports try/catch and we won't need to have
>>     alternate implementations of error handling code.
>>
>> Tests:
>>     created some simple tests using try/catch/finally,
>>     also try/catch (no finally).  Had some problems with
>>     my try/finally (no catch) example.
>>     The only way I've found to trigger an exception
>>     in SWF7/8 is to use an explicit throw statement,
>>     since the SWF instruction set seems to continue to operate
>>     with various kinds of errors.
>>
>> Files:
>> M      WEB-INF/lps/server/src/org/openlaszlo/sc/Actions.java
>> M      WEB-INF/lps/server/src/org/openlaszlo/sc/Instructions.java
>> M      WEB-INF/lps/server/src/org/openlaszlo/sc/Assembler.java
>> M      WEB-INF/lps/server/src/org/openlaszlo/sc/ 
>> InstructionCollector.java
>> M      WEB-INF/lps/server/src/org/openlaszlo/sc/CodeGenerator.java
>>
>> Changeset: http://svn.openlaszlo.org/openlaszlo/patches/20071029- 
>> dda-s.tar
>>
>>
>>
>> --
>>
>> Don Anderson
>> Java/C/C++, Berkeley DB, systems consultant
>>
>> Voice:  617-547-7881
>> Email:  dda at ddanderson.com
>> WWW:    http://www.ddanderson.com
>>
>


--

Don Anderson
Java/C/C++, Berkeley DB, systems consultant

Voice:  617-547-7881
Email:  dda at ddanderson.com
WWW:    http://www.ddanderson.com