Re: [fpc-pascal] Standard exceptions
On Mon, 28 Feb 2011, Michael Fuchs wrote: Hello, while porting software from .NET to FreePascal I am looking for some exceptions for recurrent errors. For example: ArgumentException, ArgumentNullException, ArgumentOutOfRangeException Is there a unit which defines those exceptions? These exact exceptions are not defined. The SysUtils unit defines the most standard exceptions, as well as the Classes unit. Michael. ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Standard exceptions
Am 28.02.2011 13:51, schrieb Michael Fuchs: Hello, while porting software from .NET to FreePascal I am looking for some exceptions for recurrent errors. For example: ArgumentException, ArgumentNullException, ArgumentOutOfRangeException Is there a unit which defines those exceptions? As far as I'm aware of: There are none. There is ERangeError though (in SysUtils), but that's not an equivalent for ArgumentOutOfRangeException (I suppose that inherits from ArgumentException?). Regards, Sven ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Standard exceptions
Am 28.02.2011 14:17, schrieb Sven Barth: As far as I'm aware of: There are none. There is ERangeError though (in SysUtils), but that's not an equivalent for ArgumentOutOfRangeException (I suppose that inherits from ArgumentException?). Yes,and all Argument..Exceptions have a property ParamName:String containing the parameter which causes the error. I also miss a NotImplementedException (or ENotImplemented in FPC style), very handy for test driven development. :) And by the way: how about a InnerException for the SysUtils.Exception class? This would be nice if you want to wrap an exception around another. Are there any chances for implement this? regards Michael ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Standard exceptions
On Mon, Feb 28, 2011 at 9:51 AM, Michael Fuchs freepas...@ypa-software.de wrote: Hello, while porting software from .NET to FreePascal I am looking for some exceptions for recurrent errors. For example: ArgumentException, ArgumentNullException, ArgumentOutOfRangeException Is there a unit which defines those exceptions? I never heard anybody said do this conversion... Well, do not exists these Classes in FPC. Not exists a place for all Exception classes but the first classe to exceptions is declared in SysUtils unit. Marcos Douglas ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Standard exceptions
On 28 Feb 2011, at 13:51, Michael Fuchs wrote: while porting software from .NET to FreePascal I am looking for some exceptions for recurrent errors. For example: ArgumentException, ArgumentNullException, ArgumentOutOfRangeException None of these exist in Pascal. You can get exceptions for range check errors (ERangeError) in case you enable range checking and include the sysutils unit in your uses clause, but in that case range checking will be performed for all assignments, not just for passed arguments (and the range is checked by the compiler at the caller side based on the declared parameter types, not at the callee side). There are only a few routines in the RTL that explicitly raise it after explicitly checking their arguments. There are no generic equivalents to ArgumentException and ArgumentNullException (when asking such questions in the future, you may also want to include a reference to a web page that describes what they mean, it makes it easier for people to answer you). Is there a unit which defines those exceptions? Most general exception types are defined in the sysutils unit. In many cases, routines return an error code rather than throwing an exception though. And if they throw an exception, it's quite likely that it's specific to that routine rather than of some generic type. The FPC manuals list per routine what happens in case of errors. Jonas___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Standard exceptions
On Tue, 01 Mar 2011 12:38:27 +0100, Michael Fuchs freepas...@ypa-software.de wrote: I also miss a NotImplementedException (or ENotImplemented in FPC style), very handy for test driven development. :) Yeah. And type //-- @abstract(Obvious coding error.) Coder_Needs_Coffee = class (SysUtils.Exception); was very handy for those me stupid situations. ;) Vinzent. ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
[fpc-pascal] XHTML writer support in fcl-xml
Right now, fcl-xml only contains writer for THTMLDocument class from htmlelements unit. There's also another THTMLDocument class in dom_html unit which is used as a base class of TXHTMLDocument in xhtml unit. First, why the separation? Second, is there any plan to have writer support for TXHTMLDocument? I need to produce strict xhtml document dynamically. -- View this message in context: http://free-pascal-general.1045716.n5.nabble.com/XHTML-writer-support-in-fcl-xml-tp3404505p3404505.html Sent from the Free Pascal - General mailing list archive at Nabble.com. ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Fwd: Problem
On Tue, 1 Mar 2011, Jonas Maebe wrote: To Rocco: the correct address to send messages for the list to is fpc-pascal@lists.freepascal.org Begin forwarded message: From: ROCCO DALTO roccoandr...@verizon.net Date: Tue 1 Mar 2011 01:13:08 GMT+01:00 To: fpc-pascal-boun...@lists.freepascal.org Subject: Probem! Thank You for responding. Problem:Still Cannot Run Programs Compiled In Free Pascal At My Website. I constructed math software in Turbo Pascal 7.0 and put some sample programs on my current website at http://www.mathtut.biz. The programs run fine at my site. I recently downloaded Free Pascal and modified some programs I constructed in Turbo Pascal 7.0. The problem is that the applications(complied in Free Pascal) run fine everywhere except at my website above(Using Host Monster). The file cannot be found on the server when running from website. Can you explain why? Can you provide a solution? Also,the programs loaded in the control panel(Host Monster) which where written in Turbo Pascal 7.0 are type text/x-generic and programs written in Free Pascal are type application/x-msdownload. Host Monster claimed the problem is with Free Pascal. What exactly do they claim ? Michael. ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Standard exceptions
In our previous episode, Jonas Maebe said: None of these exist in Pascal. You can get exceptions for range check errors (ERangeError) in case you enable range checking and include the sysutils unit in your uses clause, but in that case range checking will be performed for all assignments, not just for passed arguments (and the range is checked by the compiler at the caller side based on the declared parameter types, not at the callee side). There are only a few routines in the RTL that explicitly raise it after explicitly checking their arguments. There are no generic equivalents to ArgumentException and ArgumentNullException (when asking such questions in the future, you may also want to include a reference to a web page that describes what they mean, it makes it easier for people to answer you). C# has nullable types, and my guess would be that the ArgumentNullexception happens you assign/pass a nullable value with NULL to a non-nullable equivalent. So it could be that it corresponds to some EVariantisnull error, but that is a bit of a stretch. ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
[fpc-pascal] Consumer producer unit (donation to fcl)
i have implemented a small consumer x producer unit (ie: threads that produce or consume tobjects) it is thread safe (based around a tthreadsafequeue with signalling - the thread can sleep/wait arbitrary timeout time while its queue is empty waiting for the producer) is it interesting for the fcl ? i want to donate it, and i think it can be incremented with other functions. currently theres the following : TProducer (thread that produces tobjects, placing then on the queue of a consumer) TConsumer (thread that consumes tobjects thru a queue) TConsumerProducer (kind of a proxy, that consumes tobjects in a side, process them and sends then to another consumer, it inherits from TConsumer) TRandomMultiplexerProducerConsumerThread (similar to the previous, but has more than one consumer attached, it selects the next one to send its tobjects by random) TRoundRobinMultiplexerProducerConsumerThread (similar to the previous, but instead of random chance, uses a round robing fashion) TCustomAddressableMultiplexer (similar to the previous, but allows a kind of addressability of the tobjects, selecting with consumer to send to, by using a message address and a hashtable - tfphashobjectlist) Now i am developing bus and other models (various threads sharing a bus to send messages to each other, where each thread has an address). but the basic implementation evolves around the consumer producer model. ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
