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1 // Binding.cpp
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2
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3 #include "lib.h"
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4 #include "Var.h"
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5 #include "Binding.h"
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6
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7 using namespace std;
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8
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9 Binding::Binding()
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10 : data(NULL)
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11 {
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12 }
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13
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14 Binding::Binding(Var * newData)
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15 {
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16 data = newData;
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17 if (!null())
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18 {
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19 data->acquire();
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20 }
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21 }
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22
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23 Binding::~Binding()
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24 {
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25 if (!null())
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26 {
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27 data->release();
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28 }
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29 }
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30
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31 Binding::Binding(Binding const & right)
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32 {
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33 data = right.data;
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34 if (!null())
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35 {
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36 data->acquire();
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37 }
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38 }
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39
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40 Binding & Binding::operator=(Binding const & right)
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41 {
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42 Binding temp(right);
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43 swap(data, temp.data);
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44 return *this;
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45 }
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46
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47 Var * Binding::operator->(void)
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48 {
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49 return data;
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50 }
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51
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52 Var const * Binding::operator->(void) const
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53 {
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54 return data;
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55 }
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56
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57 Var & Binding::operator*(void)
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58 {
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59 return *data;
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60 }
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61
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62 Var const & Binding::operator*(void) const
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63 {
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64 return*data;
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65 }
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66
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67 bool Binding::null(void)
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68 {
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69 return data == NULL;
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70 }
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