Mercurial > pub > dyncall > dyncall
annotate test/callback_plain_c++/test_main.cc @ 545:ca28e9e3c644
- test/callback_plain_c++, to test C++ non-trivial aggrs by value, as well as method callback handlers
- Changelog
author | Tassilo Philipp |
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date | Tue, 31 May 2022 18:35:06 +0200 |
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children | 214c4efc104f |
rev | line source |
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545
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1 /* |
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2 |
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3 Package: dyncall |
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4 Library: test |
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5 File: test/callback_plain_c++/test_main.c |
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6 Description: |
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7 |
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8 Tests only C++ specifics: |
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9 - method callback handlers (= standard dyncallback handler, but testing |
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10 calling convention mode setting and hidden this ptr) |
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11 - calling functions or methods that take/return non-trivial C++ aggregates |
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12 |
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13 License: |
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14 |
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15 Copyright (c) 2022 Tassilo Philipp <tphilipp@potion-studios.com> |
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16 |
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17 Permission to use, copy, modify, and distribute this software for any |
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18 purpose with or without fee is hereby granted, provided that the above |
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19 copyright notice and this permission notice appear in all copies. |
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20 |
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21 THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
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22 WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
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23 MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
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24 ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
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25 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
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26 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
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27 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
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28 |
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29 */ |
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30 |
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31 #include "../../dyncallback/dyncall_callback.h" |
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32 #include "../common/platformInit.h" |
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33 #include "../common/platformInit.c" /* Impl. for functions only used in this translation unit */ |
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34 |
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35 |
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36 #if defined(DC__Feature_AggrByVal) |
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37 struct Triv { |
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38 float t; |
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39 }; |
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40 |
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41 struct NonTriv { |
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42 int i, j; |
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43 NonTriv(int a, int b) : i(a),j(b) { } |
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44 NonTriv(const NonTriv& rhs) { static int a=13, b=37; i = a++; j = b++; } |
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45 }; |
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46 |
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47 |
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48 char cbNonTrivAggrArgHandler(DCCallback* cb, DCArgs* args, DCValue* result, void* userdata) |
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49 { |
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50 int* ud = (int*)userdata; |
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51 int arg1; |
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52 NonTriv arg2(0, 0); |
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53 NonTriv arg3(0, 0); |
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54 Triv arg4; |
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55 double arg5; |
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56 |
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57 printf("reached callback\n"); |
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58 printf("userdata: %d\n", *ud); |
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59 |
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60 // the non-triv arg4 test basically assures that the aggr description list is |
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61 // respected (with first two being NULL as non-trivial aggrs) |
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62 arg1 = dcbArgInt(args); printf("1st argument: %d\n", arg1); |
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63 arg2 = *(NonTriv*)dcbArgAggr(args, NULL); printf("2nd argument: %d %d\n", arg2.i, arg2.j); |
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64 arg3 = *(NonTriv*)dcbArgAggr(args, NULL); printf("3nd argument: %d %d\n", arg3.i, arg3.j); |
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65 dcbArgAggr(args, (DCpointer)&arg4); printf("4th argument: %f\n", arg4.t); |
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66 arg5 = dcbArgDouble(args); printf("5th argument: %f\n", arg5); |
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67 |
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68 // the non-triv aggregate members are 14, 38 and 15, 39, respectively, b/c of |
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69 // copy-ctor call on *passing* them to this handler (not b/c of assignment |
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70 // operator, above); see below on where 13 and 37 are initialized |
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71 result->d = *ud + arg1 + arg2.i + arg2.j + arg3.i + arg3.j + arg4.t + arg5; |
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72 return 'd'; |
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73 } |
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74 |
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75 |
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76 int testNonTrivAggrArgsCallback() |
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77 { |
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78 DCCallback* cb; |
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79 Triv t = { 1.75f }; |
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80 NonTriv a(1, 2); |
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81 NonTriv b(a); // this sets NonTriv's statics a = 13 and b = 37 |
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82 |
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83 int ret = 1; |
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84 double result = 0; |
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85 int userdata = 1337; |
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86 |
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87 DCaggr *triv_aggr = dcNewAggr(1, sizeof(t)); |
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88 dcAggrField(triv_aggr, DC_SIGCHAR_FLOAT, offsetof(Triv, t), 1); |
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89 dcCloseAggr(triv_aggr); |
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90 |
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91 DCaggr *aggrs[3] = { NULL, NULL, triv_aggr }; // NULL b/c non-trivial aggrs, see manpage |
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92 |
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93 cb = dcbNewCallback2("iAAAd)d", &cbNonTrivAggrArgHandler, &userdata, aggrs); |
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94 |
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95 result = ((double(*)(int, NonTriv, NonTriv, Triv, double))cb)(123, a, b, t, 4.5); |
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96 dcbFreeCallback(cb); |
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97 |
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98 printf("successfully returned from callback\n"); |
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99 printf("return value (should be 1572.25): %f\n", result); |
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100 |
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101 ret = result == 1572.25 && ret; |
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102 |
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103 return ret; |
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104 } |
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105 |
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106 |
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107 |
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108 char cbNonTrivAggrReturnHandler(DCCallback* cb, DCArgs* args, DCValue* result, void* userdata) |
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109 { |
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110 printf("reached callback\n"); |
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111 dcbReturnAggr(args, result, NULL); // this sets result->p to the non-triv aggr space allocated by the calling convention |
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112 *(NonTriv*)result->p = NonTriv(1, 3); // explicit non-copy ctor and assignment operator, so not using NonTriv's statics a and b |
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113 |
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114 return 'A'; |
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115 } |
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116 |
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117 |
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118 int testNonTrivAggrReturnCallback() |
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119 { |
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120 int ret = 1; |
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121 |
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122 { |
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123 DCCallback* cb; |
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124 DCaggr *aggrs[1] = { NULL }; // one non-triv aggr |
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125 cb = dcbNewCallback2(")A", &cbNonTrivAggrReturnHandler, NULL, aggrs); |
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126 |
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127 NonTriv result = ((NonTriv(*)())cb)(); |
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128 |
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129 dcbFreeCallback(cb); |
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130 |
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131 printf("successfully returned from callback\n"); |
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132 printf("return value (should be %d %d): %d %d\n", 1, 3, result.i, result.j); |
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133 |
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134 ret = result.i == 1 && result.j == 3 && ret; |
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135 } |
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136 |
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137 return ret; |
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138 } |
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139 #endif |
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140 |
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141 |
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142 int main() |
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143 { |
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144 int result = 1; |
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145 |
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146 dcTest_initPlatform(); |
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147 |
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148 #if defined(DC__Feature_AggrByVal) |
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149 result = testNonTrivAggrArgsCallback() && result; |
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150 result = testNonTrivAggrReturnCallback() && result; |
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151 #endif |
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152 |
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153 printf("result: callback_plain_c++: %d\n", result); |
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154 |
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155 dcTest_deInitPlatform(); |
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156 |
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157 return !result; |
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158 } |
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159 |