Re: error exceptions

On Tuesday, August 09, 2011 3:28:14 PM, Josh Stratton wrote:
> Thanks for the responses.  What is the corresponding luabind call
> similar to luaL_dostring that actually throws exceptions?
> 
> On Tue, Aug 9, 2011 at 3:22 PM, Nigel Atkinson<[email protected]>  wrote:
>> On Wed, August 10, 2011 12:43 am, Willi Schinmeyer wrote:
>>
>>> Am Dienstag, den 09.08.2011, 07:17 -0700 schrieb Josh Stratton:
>>>> so I'm assuming there is some error in there
>>>> I thought should raise an exception.
>>>
>>> Nope, errors don't usually raise exceptions, they just change the return
>>> value. Read the manual regarding luaL_dostring(), I don't know how to
>>> check its success off the top of my head.
>>
>>
>>
>>
>> luaL_dostring reurns 1 on error, and in that case you should find a string
>> describing the problem at the top of the Lua stack.
>>
>> Nigel
>>
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> 
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There is no single Luabind call tha
t does what luaL_dostring does. You 
have to do all of the individual steps.

You have Lua compile the string into a chunk, using the standard Lua 
API (no exceptions). Then, if it compiled successfully, you have to use 
luabind::from_stack to convert the Lua chunk into a luabind::object 
(note that it will still also be on the stack, so you'll have to deal 
with that). Once it's a luabind::object, you can call it with 
operator().

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