IDTable.h

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* libscopehal                                                                                                          *
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#ifndef IDTable_h
#define IDTable_h
 
#include "SerializableObject.h"
 
class IDTable : public Bijection<uintptr_t, SerializableObject*>
{
public:
    IDTable()
    : m_nextID(1)
    {
        emplace(0, nullptr);
    }
 
    uintptr_t emplace(SerializableObject* p)
    {
        if(HasID(p))
            return m_reverseMap[p];
 
        uint32_t id = m_nextID ++;
        Bijection::emplace(id, p);
        return id;
    }
 
    void emplace(uintptr_t id, SerializableObject* p)
    {
        ReserveID(id);
        Bijection::emplace(id, p);
    }
 
    bool HasID(SerializableObject* p)
    { return (m_reverseMap.find(p) != m_reverseMap.end()); }
 
    bool HasID(uintptr_t id)
    { return (m_forwardMap.find(id) != m_forwardMap.end()); }
 
    void ReserveID(uintptr_t id)
    { m_nextID = std::max(m_nextID, id+1); }
 
    template<class T>
    T Lookup(uintptr_t id)
    { return dynamic_cast<T>(m_forwardMap[id]); }
 
    [[deprecated]]
    SerializableObject* operator[](uintptr_t key)
    { return m_forwardMap[key]; }
 
    uintptr_t operator[](SerializableObject* key)
    { return m_reverseMap[key]; }
 
    virtual void clear()
    {
        m_forwardMap.clear();
        m_reverseMap.clear();
        m_nextID = 1;
    }
 
protected:
 
    uintptr_t m_nextID;
};
 
#endif