Re: [Boost-users] Dynamically creating classed by name?
Note that a component of the serialization library "extended_type_info" addresses this issue (as it must) in order to de-serialize pointers. You might look in the serialization documentation.
Robert Ramey
Frankly speaking, I've been researching on this topic as well. Most of the current libraries (e.g. Reflex) uses external programs/scripts to general the "stub" program for reflection support. This is not acceptable for our current environment. Boost.Serialization was a very good candidate, though a little bit difficult to use--It provides the necessary support all under the hood of C++ and C++ alone. Nonetheless, though I've inspected "extended_type_info" reference in the manual a number of times, I'm sorry that I cannot see how to achieve what Rob Caldecott wanted using it. Maybe you can shed some light on this? TIA! Cheers, Freddie
Rob Caldecott wrote:
> > Is there any way that, using Boost, you can dynamically create > > classes by name, similar to the MFC RUNTIME_CLASS macros? I was > > hoping that the boost::serialize libs might be able to help with this. > > > > For example, I want to be able to do something like: > > > > CMyClass* pClass = CREATE_CLASS_BY_NAME("CMyClass"); > > > > Can Boost help me to achieve this? -- Wu Yinghui, Freddie Research & Development Software Engineer Volume Interactions Pte Ltd 1 Kim Seng Promenade, #12-01 Great World City East Tower Singapore 237994 Tel: +65 62226962 (Ext 216) Fax: +65 62226215 Email: yhwu@volumeinteractions.com URL: http://www.volumeinteractions.com Important: This message is intended for the recipient(s) addressed above. It contains privileged and confidential information. If you are not the intended recipient, please notify the sender immediately by replying to this message and then delete it from your system. You must not read, copy, use, or disseminate this communication in any form. Thank you.
I went back a looked at it again. I though the something very close to the following was already in there extended_type_info *eti = extended_type_info("MY_CLASS"); void * v = eti->create_instance(); But alas - my memory was wrong. The basic machinery is there and the functional equivalent to the above is certainly there, but its intertwined sith some other stuff like creation of objects on the stack, non-default arguments, and other stuff. I remember I was thinking about adding a little bit onto extended_type_info to support this but I realise now I never got around to it. maybe someday. Robert Ramey Wu Yinghui, Freddie wrote:
Note that a component of the serialization library "extended_type_info" addresses this issue (as it must) in order to de-serialize pointers. You might look in the serialization documentation.
Robert Ramey
Frankly speaking, I've been researching on this topic as well. Most of the current libraries (e.g. Reflex) uses external programs/scripts to general the "stub" program for reflection support. This is not acceptable for our current environment.
Boost.Serialization was a very good candidate, though a little bit difficult to use--It provides the necessary support all under the hood of C++ and C++ alone. Nonetheless, though I've inspected "extended_type_info" reference in the manual a number of times, I'm sorry that I cannot see how to achieve what Rob Caldecott wanted using it.
Maybe you can shed some light on this? TIA!
Cheers,
Freddie
Rob Caldecott wrote:
Is there any way that, using Boost, you can dynamically create classes by name, similar to the MFC RUNTIME_CLASS macros? I was > > hoping that the boost::serialize libs might be able to help with this. > > For example, I want to be able to do something like:
CMyClass* pClass = CREATE_CLASS_BY_NAME("CMyClass");
Can Boost help me to achieve this?
-- Wu Yinghui, Freddie Research & Development Software Engineer
Volume Interactions Pte Ltd 1 Kim Seng Promenade, #12-01 Great World City East Tower Singapore 237994 Tel: +65 62226962 (Ext 216) Fax: +65 62226215 Email: yhwu@volumeinteractions.com URL: http://www.volumeinteractions.com
Important: This message is intended for the recipient(s) addressed above. It contains privileged and confidential information. If you are not the intended recipient, please notify the sender immediately by replying to this message and then delete it from your system. You must not read, copy, use, or disseminate this communication in any form. Thank you.
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Wu Yinghui, Freddie