zfvalueSwitch.h

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#ifndef _ZFI_zfvalueSwitch_h_
#define _ZFI_zfvalueSwitch_h_
 
#include "ZFCoreMap.h"
 
ZF_NAMESPACE_GLOBAL_BEGIN

template<typename T_Key, typename T_Hash = ZFCoreMapKeyHash<T_Key>, typename T_Equal = ZFCoreMapKeyEqual<T_Key> >
zfclassLikePOD zfvalueSwitchData {
public:
    zfvalueSwitchData &v(ZF_IN T_Key const &v) {
        m.set(v, m.count());
        return *this;
    }
private:
    ZFCoreMap<T_Key, zfindex, T_Hash, T_Equal> m;
    template<typename T_KeyV, typename T_Key_, typename T_Hash_, typename T_Equal_>
    friend zfindex zfvalueSwitch(ZF_IN T_KeyV const &v, ZF_IN zfvalueSwitchData<T_Key_, T_Hash_, T_Equal_> const &data);
public:
    zfvalueSwitchData(void) : m() {}
    zfvalueSwitchData(ZF_IN const zfvalueSwitchData<T_Key, T_Hash, T_Equal> &ref) : m(ref.m) {}
    zfvalueSwitchData &operator = (ZF_IN const zfvalueSwitchData<T_Key, T_Hash, T_Equal> &ref) {m = ref.m; return *this;}
};

template<typename T_KeyV, typename T_Key, typename T_Hash, typename T_Equal>
zfindex zfvalueSwitch(ZF_IN T_KeyV const &v, ZF_IN zfvalueSwitchData<T_Key, T_Hash, T_Equal> const &data) {
    const zfindex *t = data.m.get(v);
    return t ? *t : zfindexMax();
}
 
ZF_NAMESPACE_GLOBAL_END
 
#endif // #ifndef _ZFI_zfvalueSwitch_h_