FaceArray.h

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#pragma once
 
#include <ogdf/basic/Array.h>
#include <ogdf/basic/CombinatorialEmbedding.h>
 
namespace ogdf {
 
 
 
class FaceArrayBase {
    ListIterator<FaceArrayBase*> m_it;
 
public:
    const ConstCombinatorialEmbedding* m_pEmbedding; 
 
    FaceArrayBase() : m_pEmbedding(nullptr) { }
 
    explicit FaceArrayBase(const ConstCombinatorialEmbedding* pE) : m_pEmbedding(pE) {
        if (pE) {
            m_it = pE->registerArray(this);
        }
    }
 
    FaceArrayBase(FaceArrayBase& base) : m_it(base.m_it), m_pEmbedding(base.m_pEmbedding) {
        if (m_pEmbedding) {
            m_pEmbedding->moveRegisterArray(m_it, this);
        }
        base.m_pEmbedding = nullptr;
        base.m_it = ListIterator<FaceArrayBase*>();
    }
 
    // destructor, unregisters the array
    virtual ~FaceArrayBase() {
        if (m_pEmbedding) {
            m_pEmbedding->unregisterArray(m_it);
        }
    }
 
    // event interface used by CombinatorialEmbedding
    virtual void enlargeTable(int newTableSize) = 0;
    virtual void reinit(int initTableSize) = 0;
 
    void reregister(const ConstCombinatorialEmbedding* pE) {
        if (m_pEmbedding) {
            m_pEmbedding->unregisterArray(m_it);
        }
        if ((m_pEmbedding = pE) != nullptr) {
            m_it = pE->registerArray(this);
        }
    }
 
    void moveRegister(FaceArrayBase& base) {
        if (m_pEmbedding) {
            m_pEmbedding->unregisterArray(m_it);
        }
        m_pEmbedding = base.m_pEmbedding;
        m_it = base.m_it;
        base.m_pEmbedding = nullptr;
        base.m_it = ListIterator<FaceArrayBase*>();
        if (m_pEmbedding != nullptr) {
            m_pEmbedding->moveRegisterArray(m_it, this);
        }
    }
};
 
 
template<class T>
class FaceArray : private Array<T>, protected FaceArrayBase {
    T m_x; 
 
public:
    using key_type = face;
    using value_type = T;
 
    using iterator = internal::GraphArrayIterator<FaceArray<T>>;
    using const_iterator = internal::GraphArrayConstIterator<FaceArray<T>>;
 
    FaceArray() : Array<T>(), FaceArrayBase() { }
 
    FaceArray(const ConstCombinatorialEmbedding& E)
        : Array<T>(E.faceArrayTableSize()), FaceArrayBase(&E) { }
 
 
    FaceArray(const ConstCombinatorialEmbedding& E, const T& x)
        : Array<T>(0, E.faceArrayTableSize() - 1, x), FaceArrayBase(&E), m_x(x) { }
 
 
    FaceArray(const FaceArray<T>& A) : Array<T>(A), FaceArrayBase(A.m_pEmbedding), m_x(A.m_x) { }
 
 
    FaceArray(FaceArray<T>&& A) : Array<T>(std::move(A)), FaceArrayBase(A), m_x(A.m_x) { }
 
 
    bool valid() const { return Array<T>::low() <= Array<T>::high(); }
 
    const ConstCombinatorialEmbedding* embeddingOf() const { return m_pEmbedding; }
 
    const T& operator[](face f) const {
        OGDF_ASSERT(f != nullptr);
        OGDF_ASSERT(f->embeddingOf() == m_pEmbedding);
        return Array<T>::operator[](f->index());
    }
 
    T& operator[](face f) {
        OGDF_ASSERT(f != nullptr);
        OGDF_ASSERT(f->embeddingOf() == m_pEmbedding);
        return Array<T>::operator[](f->index());
    }
 
    const T& operator()(face f) const {
        OGDF_ASSERT(f != nullptr);
        OGDF_ASSERT(f->embeddingOf() == m_pEmbedding);
        return Array<T>::operator[](f->index());
    }
 
    T& operator()(face f) {
        OGDF_ASSERT(f != nullptr);
        OGDF_ASSERT(f->embeddingOf() == m_pEmbedding);
        return Array<T>::operator[](f->index());
    }
 
 
 
 
    iterator begin() { return iterator(m_pEmbedding->firstFace(), this); }
 
 
    const_iterator begin() const { return const_iterator(m_pEmbedding->firstFace(), this); }
 
 
    const_iterator cbegin() const { return const_iterator(m_pEmbedding->firstFace(), this); }
 
 
    iterator end() { return iterator(nullptr, this); }
 
 
    const_iterator end() const { return const_iterator(nullptr, this); }
 
 
    const_iterator cend() const { return const_iterator(nullptr, this); }
 
 
 
    void init() {
        Array<T>::init();
        reregister(nullptr);
    }
 
    void init(const ConstCombinatorialEmbedding& E) {
        Array<T>::init(E.faceArrayTableSize());
        reregister(&E);
    }
 
 
    void init(const ConstCombinatorialEmbedding& E, const T& x) {
        Array<T>::init(0, E.faceArrayTableSize() - 1, m_x = x);
        reregister(&E);
    }
 
    void fill(const T& x) {
        int high = m_pEmbedding->maxFaceIndex();
        if (high >= 0) {
            Array<T>::fill(0, high, x);
        }
    }
 
    FaceArray<T>& operator=(const FaceArray<T>& a) {
        Array<T>::operator=(a);
        m_x = a.m_x;
        reregister(a.m_pEmbedding);
        return *this;
    }
 
 
    FaceArray<T>& operator=(FaceArray<T>&& a) {
        Array<T>::operator=(std::move(a));
        m_x = a.m_x;
        moveRegister(a);
        return *this;
    }
 
 
 
    static key_type findSuccKey(key_type key) { return key->succ(); }
 
    static key_type findPredKey(key_type key) { return key->pred(); }
 
 
private:
    virtual void enlargeTable(int newTableSize) { Array<T>::resize(newTableSize, m_x); }
 
    virtual void reinit(int initTableSize) { Array<T>::init(0, initTableSize - 1, m_x); }
 
    OGDF_NEW_DELETE
};
 
}