1 | struct WrappedInt { |
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2 | int x; |
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3 | }; |
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4 | |
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5 | void ?{}(WrappedInt & this) { |
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6 | printf("constructing int\n"); |
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7 | this.x = 0; |
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8 | } |
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9 | |
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10 | void ?{}(WrappedInt & this, WrappedInt other) { |
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11 | printf("copy constructing int: %d\n", other.x); |
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12 | this.x = other.x; |
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13 | } |
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14 | |
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15 | void ?{}(WrappedInt & this, int x) { |
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16 | printf("constructing int: %d\n", x); |
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17 | this.x = x; |
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18 | } |
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19 | |
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20 | void ^?{}(WrappedInt & this) { |
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21 | printf("destructing int: %d\n", this.x); |
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22 | } |
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23 | |
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24 | void ?=?(WrappedInt & this, int x) { |
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25 | printf("assigning int: %d %d\n", this.x, x); |
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26 | this.x = x; |
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27 | } |
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28 | |
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29 | struct A { |
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30 | WrappedInt x, y, z; |
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31 | }; |
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32 | |
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33 | void ?{}(A & a) { |
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34 | // currently must define default ctor, since there's no "= default" syntax |
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35 | } |
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36 | |
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37 | void ?{}(A & a, int x) { |
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38 | printf("begin construct A\n"); |
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39 | printf("construct a.x\n"); |
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40 | (a.x){ x+999 }; |
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41 | printf("assign a.y\n"); |
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42 | a.y = 0; // not a constructor - default constructor will be inserted |
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43 | printf("end construct A\n"); |
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44 | } // z never constructed - will be automatically default constructed |
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45 | |
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46 | void ?{}(A & this, A other) { |
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47 | printf("begin copy construct A\n"); |
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48 | printf("copy construct this.x\n"); |
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49 | (this.x){ other.x }; |
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50 | printf("assign this.y\n"); |
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51 | this.y = other.y; // not a constructor - copy constructor will be inserted |
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52 | printf("end copy construct A\n"); |
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53 | } // z never constructed - will be automatically copy constructed |
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54 | |
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55 | A ?=?(A & this, A other) { |
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56 | printf("begin ?=? A\n"); |
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57 | this.x = other.x; |
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58 | this.y = other.y; |
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59 | this.z = other.z; |
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60 | printf("end ?=? A\n"); |
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61 | return this; |
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62 | } |
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63 | |
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64 | struct B { |
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65 | A a1, a2, a3; |
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66 | }; |
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67 | |
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68 | void ?{}(B & b) { |
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69 | printf("begin construct B\n"); |
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70 | printf("assign b.a2\n"); |
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71 | b.a2 = (A) { 2 }; |
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72 | printf("construct b.a1\n"); |
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73 | (b.a1){ 1 }; |
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74 | #ifdef ERR1 |
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75 | (b.a2){ b.a3 }; // error, b->a2 was used previously but is explicitly constructed |
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76 | #endif |
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77 | printf("end construct B\n"); |
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78 | } // a2, a3 never constructed - will be automatically default constructed |
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79 | |
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80 | void ^?{}(B & b) { |
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81 | b.a2 = (A) { 0 }; |
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82 | ^(b.a1){}; |
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83 | } // a2, a3 never destructed - will be automatically destructed |
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84 | |
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85 | int main() { |
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86 | printf("Before declaration of b1\n"); |
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87 | B b1; |
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88 | printf("Before declaration of b2\n"); |
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89 | B b2 = b1; |
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90 | printf("End of main\n"); |
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91 | } |
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