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
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] Standard exceptions
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? regards Michael ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
