iterator.cpp

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#include "yaml-cpp-pm/node.h"
#include "yaml-cpp-pm/exceptions.h"
#include "iterpriv.h"

namespace YAML_PM
{
        Iterator::Iterator(): m_pData(new IterPriv)
        {
        }

        Iterator::Iterator(std::auto_ptr<IterPriv> pData): m_pData(pData)
        {
        }

        Iterator::Iterator(const Iterator& rhs): m_pData(new IterPriv(*rhs.m_pData))
        {
        }

        Iterator& Iterator::operator = (const Iterator& rhs)
        {
                if(this == &rhs)
                        return *this;

                m_pData.reset(new IterPriv(*rhs.m_pData));
                return *this;
        }

        Iterator::~Iterator()
        {
        }

        Iterator& Iterator::operator ++ ()
        {
                if(m_pData->type == IterPriv::IT_SEQ)
                        ++m_pData->seqIter;
                else if(m_pData->type == IterPriv::IT_MAP)
                        ++m_pData->mapIter;

                return *this;
        }

        Iterator Iterator::operator ++ (int)
        {
                Iterator temp = *this;

                if(m_pData->type == IterPriv::IT_SEQ)
                        ++m_pData->seqIter;
                else if(m_pData->type == IterPriv::IT_MAP)
                        ++m_pData->mapIter;

                return temp;
        }

        const Node& Iterator::operator * () const
        {
                if(m_pData->type == IterPriv::IT_SEQ)
                        return **m_pData->seqIter;

                throw BadDereference();
        }

        const Node *Iterator::operator -> () const
        {
                if(m_pData->type == IterPriv::IT_SEQ)
                        return *m_pData->seqIter;

                throw BadDereference();
        }

        const Node& Iterator::first() const
        {
                if(m_pData->type == IterPriv::IT_MAP)
                        return *m_pData->mapIter->first;

                throw BadDereference();
        }

        const Node& Iterator::second() const
        {
                if(m_pData->type == IterPriv::IT_MAP)
                        return *m_pData->mapIter->second;

                throw BadDereference();
        }

        bool operator == (const Iterator& it, const Iterator& jt)
        {
                if(it.m_pData->type != jt.m_pData->type)
                        return false;

                if(it.m_pData->type == IterPriv::IT_SEQ)
                        return it.m_pData->seqIter == jt.m_pData->seqIter;
                else if(it.m_pData->type == IterPriv::IT_MAP)
                        return it.m_pData->mapIter == jt.m_pData->mapIter;

                return true;
        }

        bool operator != (const Iterator& it, const Iterator& jt)
        {
                return !(it == jt);
        }
}