Global Declarations
    enumerators
            e1  ~>  <econst $3> e1  =  4
            e2  ~>  <econst E2> e2  =  e1
            e3  ~>  <econst E2> e3  =  e1 + 1
    declarations
            a  ~>  declaration a | static/external | int
            f2  ~>  declaration f2 | function/external | int ()
    objects b  ~>  object b | static/internal | long long
            c  ~>  object c | static/external | long = 4
            xe1  ~>  object xe1 | static/external | enum $3
    functions
            g  ~>  function g | function/internal | int (char * * a)
            f1  ~>  function f1 | function/internal | int ()
            export  ~>  function export | function/external | int ()
    tags    $3  ~>  enum $3 {e1  =  4;}
            E2  ~>  enum E2 {e2  =  e1; e3  =  e1 + 1;}
    typeDefs
            ENUM2  ~>  typedef ENUM2 as enum E2