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145
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1 struct coro1 {
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2 struct promise_type;
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3 using handle_type = coro::coroutine_handle<coro1::promise_type>;
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4 handle_type handle;
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5 coro1 () : handle(0) {}
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6 coro1 (handle_type _handle)
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7 : handle(_handle) {
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8 PRINT("Created coro1 object from handle");
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9 }
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10 coro1 (const coro1 &) = delete; // no copying
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11 coro1 (coro1 &&s) : handle(s.handle) {
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12 s.handle = nullptr;
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13 PRINT("coro1 mv ctor ");
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14 }
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15 coro1 &operator = (coro1 &&s) {
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16 handle = s.handle;
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17 s.handle = nullptr;
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18 PRINT("coro1 op= ");
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19 return *this;
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20 }
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21 ~coro1() {
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22 PRINT("Destroyed coro1");
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23 if ( handle )
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24 handle.destroy();
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25 }
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26
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27 // Some awaitables to use in tests.
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28 // With progress printing for debug.
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29 struct suspend_never_prt {
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30 #ifdef MISSING_AWAIT_READY
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31 #else
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32 bool await_ready() const noexcept { return true; }
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33 #endif
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34 void await_suspend(handle_type) const noexcept { PRINT ("susp-never-susp");}
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35 void await_resume() const noexcept { PRINT ("susp-never-resume");}
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36 };
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37
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38 struct suspend_always_prt {
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39 bool await_ready() const noexcept { return false; }
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40 #ifdef MISSING_AWAIT_SUSPEND
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41 #else
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42 void await_suspend(handle_type) const noexcept { PRINT ("susp-always-susp");}
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43 #endif
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44 void await_resume() const noexcept { PRINT ("susp-always-resume");}
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45 ~suspend_always_prt() { PRINT ("susp-always-dtor"); }
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46 };
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47
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48 struct suspend_always_intprt {
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49 int x;
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50 suspend_always_intprt() : x(5) {}
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51 suspend_always_intprt(int __x) : x(__x) {}
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52 ~suspend_always_intprt() {}
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53 bool await_ready() const noexcept { return false; }
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54 void await_suspend(coro::coroutine_handle<>) const noexcept { PRINT ("susp-always-susp-intprt");}
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55 #ifdef MISSING_AWAIT_RESUME
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56 #else
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57 int await_resume() const noexcept { PRINT ("susp-always-resume-intprt"); return x;}
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58 #endif
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59 };
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60
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61 /* This returns the square of the int that it was constructed with. */
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62 struct suspend_always_longprtsq {
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63 long x;
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64 suspend_always_longprtsq() : x(12L) { PRINT ("suspend_always_longprtsq def ctor"); }
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65 suspend_always_longprtsq(long _x) : x(_x) { PRINTF ("suspend_always_longprtsq ctor with %ld\n", x); }
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66 ~suspend_always_longprtsq() {}
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67 bool await_ready() const noexcept { return false; }
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68 void await_suspend(coro::coroutine_handle<>) const noexcept { PRINT ("susp-always-susp-longsq");}
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69 long await_resume() const noexcept { PRINT ("susp-always-resume-longsq"); return x * x;}
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70 };
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71
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72 struct suspend_always_intrefprt {
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73 int& x;
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74 suspend_always_intrefprt(int& __x) : x(__x) {}
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75 ~suspend_always_intrefprt() {}
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76 bool await_ready() const noexcept { return false; }
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77 void await_suspend(coro::coroutine_handle<>) const noexcept { PRINT ("susp-always-susp-intprt");}
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78 int& await_resume() const noexcept { PRINT ("susp-always-resume-intprt"); return x;}
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79 };
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80
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81 struct promise_type {
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82
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83 promise_type() : vv(-1) { PRINT ("Created Promise"); }
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84 promise_type(int __x) : vv(__x) { PRINTF ("Created Promise with %d\n",__x); }
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85 ~promise_type() { PRINT ("Destroyed Promise"); }
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86
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87 auto get_return_object () {
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88 PRINT ("get_return_object: handle from promise");
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89 return handle_type::from_promise (*this);
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90 }
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91
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92 auto initial_suspend () {
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93 PRINT ("get initial_suspend (always)");
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94 return suspend_always_prt{};
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95 }
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96 auto final_suspend () {
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97 PRINT ("get final_suspend (always)");
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98 return suspend_always_prt{};
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99 }
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100
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101 #ifdef USE_AWAIT_TRANSFORM
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102
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103 auto await_transform (int v) {
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104 PRINTF ("await_transform an int () %d\n",v);
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105 return suspend_always_intprt (v);
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106 }
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107
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108 auto await_transform (long v) {
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109 PRINTF ("await_transform a long () %ld\n",v);
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110 return suspend_always_longprtsq (v);
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111 }
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112
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113 #endif
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114
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115 auto yield_value (int v) {
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116 PRINTF ("yield_value (%d)\n", v);
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117 vv = v;
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118 return suspend_always_prt{};
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119 }
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120
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121 #ifdef RETURN_VOID
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122
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123 void return_void () {
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124 PRINT ("return_void ()");
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125 }
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126
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127 #else
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128
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129 void return_value (int v) {
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130 PRINTF ("return_value (%d)\n", v);
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131 vv = v;
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132 }
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133
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134 #endif
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135 void unhandled_exception() { PRINT ("** unhandled exception"); }
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136
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137 int get_value () { return vv; }
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138 private:
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139 int vv;
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140 };
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141
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142 };
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