gistfile1.cpp

struct name {
    virtual name::~name() = 0;
};

// foo
struct identifier : name {
    string name;
};

// foo.bar
struct qualified_name : name {
    unique_ptr<name> base;
    string child;
};

// foo<bar, baz>
struct parameterized_name : name {
    unique_ptr<name> base;
    vector<unique_ptr<name>> params;
};