From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: pjb@informatimago.com (Pascal J. Bourguignon) Newsgroups: gmane.emacs.help Subject: Re: Creating C++ constructor member init lists Date: Tue, 27 Oct 2009 22:21:13 +0100 Organization: Informatimago Message-ID: <871vkottx2.fsf@galatea.local> References: NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: ger.gmane.org 1256679707 21658 80.91.229.12 (27 Oct 2009 21:41:47 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Tue, 27 Oct 2009 21:41:47 +0000 (UTC) To: help-gnu-emacs@gnu.org Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Tue Oct 27 22:41:41 2009 Return-path: Envelope-to: geh-help-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([199.232.76.165]) by lo.gmane.org with esmtp (Exim 4.50) id 1N2tnK-0008Mc-2U for geh-help-gnu-emacs@m.gmane.org; Tue, 27 Oct 2009 22:41:34 +0100 Original-Received: from localhost ([127.0.0.1]:59357 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1N2tnJ-0005S1-DU for geh-help-gnu-emacs@m.gmane.org; Tue, 27 Oct 2009 17:41:33 -0400 Original-Path: news.stanford.edu!usenet.stanford.edu!fu-berlin.de!uni-berlin.de!individual.net!not-for-mail Original-Newsgroups: gnu.emacs.help Original-Lines: 80 Original-X-Trace: individual.net o+giS7C5Xk86s2aPpEotqwD3D2PbhTTymTkXPDQKIDr7hqTTGJ Cancel-Lock: sha1:NDIxNTE0NzQzM2Y5YmU0NjBhZjBhZTcxOWFhZGNiNzBkNjcyZTZlNw== sha1:sa9A99k/8rbn8iKShWOz4XhcqD0= Face: iVBORw0KGgoAAAANSUhEUgAAADAAAAAwAQMAAABtzGvEAAAABlBMVEUAAAD///+l2Z/dAAAA oElEQVR4nK3OsRHCMAwF0O8YQufUNIQRGIAja9CxSA55AxZgFO4coMgYrEDDQZWPIlNAjwq9 033pbOBPtbXuB6PKNBn5gZkhGa86Z4x2wE67O+06WxGD/HCOGR0deY3f9Ijwwt7rNGNf6Oac l/GuZTF1wFGKiYYHKSFAkjIo1b6sCYS1sVmFhhhahKQssRjRT90ITWUk6vvK3RsPGs+M1RuR mV+hO/VvFAAAAABJRU5ErkJggg== X-Accept-Language: fr, es, en X-Disabled: X-No-Archive: no User-Agent: Gnus/5.1008 (Gnus v5.10.8) Emacs/22.3 (darwin) Original-Xref: news.stanford.edu gnu.emacs.help:174213 X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Users list for the GNU Emacs text editor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.help:69296 Archived-At: Sarir Khamsi writes: > I'd like to write some code in some language (preferably in Emacs > Lisp) to take a C++ class and add member variables to the > constructor's member initialization list in an automated > fashion. Given something like: > > struct MyType > { > MyType(); > // ... > private: > int i1_; > double d_; > T1 *pT1_; > T2 t2_; > }; > > I'd like the code to generate: > > struct MyType > { > MyType() : > i1_(0), > d_(0.0), > pT1_(0), > t2_() > { > } > // ... > private: > int i1_; > double d_; > T1 *pT1_; > T2 t2_; > }; > > It would be easy to write something that just default-constructs the > members, but I'd like to make it smart enough to init bools to > "false", ints to "0", doubles to "0.0", etc. My questions are: > > - Are there helper functions in c++-mode that can be used to > enumerate member variables, or make life easier? Not in c++-mode. But you might find that with the cedet project. > - Is there code to do something like this already (I looked a bit and > didn't find exactly what I wanted)? Possibly in cedet. At least, there there are the tools to do such a thing, (eg. the bovinator is a parser generator to implement the partial parsers needed for such kind of tools). > - Is GCC-XML worth looking into? I've looked at the output of a small > C++ class and could use Python to do what I want. If you need something more precise. However, if you are working in emacs, you may want to be able to work on code that is not perfect, syntax-wise (code that you are editing), and therefore the tools you'll find in the cedet project will probably be more adapted to what you want to do than gcc-xml. > I haven't started the coding and wanted to get other people's > input. Thanks. http://cedet.sourceforge.net The C/C++ parser is already implemented (click on "Parts of CEDET" / Semantic ) Also, if you want to generate your constructors, you can do so with SRecode, which is a template based code generation tool. (But I guess you will have to add your features to collect the attributes of the class and put them in the constructor tranmission). -- __Pascal Bourguignon__