[cfe-users] Reading and Attaching Comments to CLANG AST

[George Karpenkov via cfe-users]

Hi Bewoayia,

I think you would have more luck asking your question at cfe-dev, in my understanding very few people read cfe-users.

George

> On Mar 7, 2018, at 1:49 AM, Bewoayia Kebianyor via cfe-users <cfe-users at lists.llvm.org> wrote:
> 
> Hi,
> 
> can anyone help in providing clarification to this query?
> 
> I am new to Clang, LLVM and have some questions regarding attaching comments to the clang AST. I would like to parse a C/C++ file and get preceeding comments to variable declarations and attach these to the AST. The comments are annotations of model objects in the source code. I need to get the source location for certain actions in the model based on these comments.
> 
> So far I can visit the VarDecl, statements using the ASTRecursive visitor. I have read several tutorials and searched, but could not find any straight forward way of reading the comments and attaching it to the AST node. I also noticed that the getRawCommentForDeclNoCache(VarDecl) is always null. From one of the tutorials it was mentioned that the option -fparse-all-comments must be passed to clang inorder to have non-doxygen style of comments.
> 
> Can someone please provide me with more clarification on this? Why do I always get nullptr for  getRawCommentForDeclNoCache(VarDecl). Where to pass this option.
> 
> Thanks inadvance,
> 
> Bewoayia
> 
> -----"cfe-users" <cfe-users-bounces at lists.llvm.org> schrieb: -----
> An: cfe-users at lists.llvm.org
> Von: Bewoayia Kebianyor via cfe-users 
> Gesendet von: "cfe-users" 
> Datum: 28.02.2018 14:36
> Betreff: [cfe-users] Reading and Attaching Comments to CLANG AST
> 
> Hello,
> 
> I am new to Clang, LLVM and have some questions regarding attaching comments to the clang AST. I would like to parse a C/C++ file and get preceeding comments to variable declarations and attach these to the AST. The comments are annotations of model objects in the source code. I need to get the source location for certain actions in the model based on these comments.
> 
> So far I can visit the VarDecl, statements using the ASTRecursive visitor. I have read several tutorials and searched, but could not find any straight forward way of reading the comments and attaching it to the AST node. I also noticed that the getRawCommentForDeclNoCache(VarDecl) is always null. From one of the tutorials it was mentioned that the option -fparse-all-comments must be passed to clang inorder to have non-doxygen style of comments.
> 
> Can someone please provide me with more clarification on this? Why do I always get nullptr for  getRawCommentForDeclNoCache(VarDecl). Where to pass this option.
> 
> Thanks inadvance,
> 
> Bewoayia
> 
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