[aspectc-user] puma usage :: retrieving scope info dtls from classdb

[Terry]

Hi,

This is regarding the usage of the Puma library.

The goal I intended to achieve is to find the starting and ending
nodes/tokens on the AST for a specific scope.

So, here are the steps I've taken:
1. produce the parse tree
    Puma::CCParser parser;
    Puma::CTranslationUnit* tu = parser.parse(*unit, project);
2. conduct further semantic analysis
    Puma::CCSemVisitor semantics(err);
    semantics.run(tu->tree());
3. I am interested in "attributes", so I use an "attribute" (generally a
variable) for instance. I tried to get the info I expected.
3.1 I obtained a pointer to the attribute info from the class database thru
    "Puma::CAttributeInfo *pAttrInfo"
3.2 I obtained a pointer to the scope info of this attribute thru
    "Puma::CScopeInfo * pScopeInfo = pAttrInfo->ObjectInfo()->Scope()"
3.3 I obtained a pointer to source info for the above scope thru
    "Puma::CSourceInfo * pSrcInfo = pScopeInfo->SourceInfo()"
3.4 (where the problem lies) I tried to get the start token of this scope
thru
    "Puma::CT_Token * pCTToken = pSrcInfo->StartToken()",
    YET I kept receiving a null pointer for pCTToken.

If anyone knows how to address problem, please show me the right steps.
Thanks a lot!

Terry Yang
Computer Security Laboratory
Concordia Institute for Information Systems Security
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