[java] : detecting function within a declared function that has particular name

[ahmed-farid-dev]

Hi, if you can help me to detect a function inside a declared function that has a particular name like this:

private boolean login(String pwd, HttpServletRequest request) {
    String password = request.getParameter("password");
    return password.equals(pwd);        
}

I wanna detect equals() function and in the same time matching the name of the declared function in this case login().

[atorralba]

You can use getEnclosingCallable, e.g. (untested code):

predicate test() {
  exists(MethodAccess equals, Method login |
    equals.getMethod().hasName("equals") and
    login.hasName("login") and
    equals.getEnclosingCallable() = login
  )
}

Of course, feel free to further restrict login and equals based on their declaring types, qualifiers, or whatever else you need.