[cfe-dev] How to know in what CXXRecordDecl is a Stmt?

[victor]

I'm having a problem and the information is not very enlightening:

/usr/local/include/llvm/ADT/SmallPtrSet.h:190: const PtrTy llvm::SmallPtrSetIterator<const clang::CXXRecordDecl *>::operator*() const [PtrTy = const clang::CXXRecordDecl *]: Assertion `Bucket < End' failed.
Stack dump:
...

Have you ever bumped into this error? The code of the method that gives the error is:
00192 const PtrTy operator*() const {
00193     assert(Bucket < End);
00194     return PtrTraits::getFromVoidPointer(const_cast<void*>(*Bucket));
00195   }http://llvm.org/docs/doxygen/html/SmallPtrSet_8h_source.html#l00183

I'm not sure where in the code this error occurs, but anyway, is this the correct way to use the method getParents? This gets all kind of nodes, not only Stmt, right?

clang::ASTContext::ParentVector pv = Context->getParents<Stmt>(*m);

Thanks.



Date: Fri, 11 Apr 2014 10:45:55 +0200
Subject: Re: [cfe-dev] How to know in what CXXRecordDecl is a Stmt?
From: klimek at google.com
To: pedretti_86 at hotmail.com
CC: cfe-dev at cs.uiuc.edu

On Fri, Apr 11, 2014 at 10:43 AM, victor <pedretti_86 at hotmail.com> wrote:




Well, as I said, not necessarily - you will definitely find a 
CXXMethodDecl, but from there you have to go to its CXXRecordDecl 
directly, not via getParents(), as it might be an out-of-line 
definition.
Ok, that's much clearer. I hope I can implement it without problems.


No, you get the children directly from the AST nodes.
Sorry if my question is too trivial, but I am not so expert using these libraries. I can find children in Stmt:
http://clang.llvm.org/doxygen/classclang_1_1Stmt.html#a489148e5d234a5a7f00d8b02981bcee5


but I couldn't find it in Decl. What is the way in this case?

You can go from the DeclContext: http://clang.llvm.org/doxygen/classclang_1_1DeclContext.html 
But generally, you'll want to use the AST matchers, or the RecursiveASTVisitor if you want to traverse the ast... 


Date: Fri, 11 Apr 2014 10:02:59 +0200
Subject: Re: [cfe-dev] How to know in what CXXRecordDecl is a Stmt?
From: klimek at google.com

To: pedretti_86 at hotmail.com
CC: cfe-dev at cs.uiuc.edu

On Fri, Apr 11, 2014 at 9:19 AM, victor <pedretti_86 at hotmail.com> wrote:





Oh, thanks, I didn't know that method. 

Note that you'll not always end up in a CXXRecordDecl - sometimes you'll
 also end up in a method decl that is defined out-of-line.

Ok, so I will go through the ParentVector and, if finding a method decl, I will get the CXXRecordDecl of that method with getParent() in CXXMethodDecl, is this right?


 Well, as I said, not necessarily - you will definitely find a CXXMethodDecl, but from there you have to go to its CXXRecordDecl directly, not via getParents(), as it might be an out-of-line definition.


BTW, Isn't there a getChildren in ASTContext for the contrary purpose? I was wondering the reason.



No, you get the children directly from the AST nodes. 


Thanks.


Date: Thu, 10 Apr 2014 10:48:50 +0200
Subject: Re: [cfe-dev] How to know in what CXXRecordDecl is a Stmt?
From: klimek at google.com


To: pedretti_86 at hotmail.com
CC: cfe-dev at cs.uiuc.edu


ASTContext (http://clang.llvm.org/doxygen/classclang_1_1ASTContext.html) has a getParents() method. Note that you'll not always end up in a CXXRecordDecl - sometimes you'll also end up in a method decl that is defined out-of-line.




On Thu, Apr 10, 2014 at 9:40 AM, victor <pedretti_86 at hotmail.com> wrote:




Hello,


When I retrieve a Stmt in the AST, how can I know the CXXRecordDel to which that Stmt belongs to? I have been looking over the methods in the Stmt class, but I couldn't find an appropriate method to this end. 




Thanks in advance.

 		 	   		  

_______________________________________________

cfe-dev mailing list

cfe-dev at cs.uiuc.edu

http://lists.cs.uiuc.edu/mailman/listinfo/cfe-dev



 		 	   		  

 		 	   		  

 		 	   		  
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.llvm.org/pipermail/cfe-dev/attachments/20140412/380b90a9/attachment.html>