Adding Annotation Syntax to C++ Source

Question

I want to create my own custom annotation (just like the Java style annotation) tags in my C++ source. Since standard C++ syntax doesn\'t allow annotation, I\'d like to mod

Answer 1

Does Visual Studio expose its compiler internals for users to modify (e.g. output of its lexer, abstract syntax tree, etc.)?

No

Are there any third party tools for parsing C++ syntax and allow me to emit my own customized C++ source base on my own annotation?

Clang