1 | // Draft of tests for exception handling. |
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2 | |
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3 | #include <stdio.h> |
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4 | #include <stdbool.h> |
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5 | |
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6 | struct signal_exit { |
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7 | const char * area; |
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8 | }; |
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9 | |
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10 | void ?{}(signal_exit * this, const char * area) { |
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11 | this->area = area; |
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12 | } |
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13 | |
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14 | void ^?{}(signal_exit * this) { |
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15 | printf("Exiting: %s\n", this->area); |
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16 | // sout | "Exiting:" | this->area | endl; |
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17 | } |
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18 | |
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19 | void terminate(int except_value) { |
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20 | signal_exit a = {"terminate function"}; |
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21 | throw except_value; |
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22 | printf("terminate returned\n"); |
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23 | } |
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24 | |
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25 | void resume(int except_value) { |
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26 | signal_exit a = {"resume function"}; |
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27 | throwResume except_value; |
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28 | printf("resume returned\n"); |
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29 | } |
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30 | |
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31 | // Termination Test: Two handlers: no catch, catch |
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32 | void bar() { |
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33 | signal_exit a = {"bar function"}; |
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34 | try { |
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35 | terminate(4); |
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36 | } catch (3) { |
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37 | printf("bar caught exception 3.\n"); |
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38 | } |
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39 | } |
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40 | |
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41 | void foo() { |
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42 | signal_exit a = {"foo function"}; |
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43 | try { |
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44 | bar(); |
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45 | } catch (4) { |
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46 | printf("foo caught exception 4.\n"); |
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47 | } catch (2) { |
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48 | printf("foo caught exception 2.\n"); |
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49 | } |
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50 | } |
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51 | |
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52 | // Resumption Two Handler Test: no catch, catch. |
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53 | void beta() { |
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54 | signal_exit a = {"beta function"}; |
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55 | try { |
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56 | resume(4); |
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57 | } catchResume (3) { |
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58 | printf("beta caught exception 3\n"); |
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59 | } |
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60 | } |
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61 | |
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62 | void alpha() { |
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63 | signal_exit a = {"alpha function"}; |
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64 | try { |
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65 | beta(); |
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66 | } catchResume (2) { |
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67 | printf("alpha caught exception 2\n"); |
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68 | } catchResume (4) { |
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69 | printf("alpha caught exception 4\n"); |
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70 | } |
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71 | } |
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72 | |
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73 | // Finally Test: |
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74 | void farewell(bool jump) { |
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75 | try { |
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76 | if (jump) { |
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77 | printf("jump out of farewell\n"); |
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78 | goto endoffunction; |
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79 | } else { |
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80 | printf("walk out of farewell\n"); |
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81 | } |
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82 | } finally { |
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83 | printf("See you next time\n"); |
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84 | } |
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85 | endoffunction: |
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86 | printf("leaving farewell\n"); |
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87 | } |
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88 | |
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89 | // Resume-to-Terminate Test: |
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90 | void fallback() { |
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91 | try { |
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92 | resume(2); |
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93 | } catch (2) { |
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94 | printf("fallback caught termination 2\n"); |
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95 | } |
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96 | } |
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97 | |
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98 | // Terminate Throw New Exception: |
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99 | void terminate_swap() { |
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100 | signal_exit a = {"terminate_swap"}; |
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101 | try { |
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102 | terminate(2); |
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103 | } catch (2) { |
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104 | terminate(3); |
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105 | } |
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106 | } |
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107 | |
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108 | void terminate_swapped() { |
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109 | signal_exit a = {"terminate_swapped"}; |
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110 | try { |
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111 | terminate_swap(); |
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112 | } catch (3) { |
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113 | printf("terminate_swapped caught exception 3\n"); |
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114 | } |
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115 | } |
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116 | |
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117 | // Resume Throw New Exception: |
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118 | void resume_swap() { |
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119 | signal_exit a = {"terminate_swap"}; |
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120 | try { |
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121 | resume(2); |
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122 | } catchResume (2) { |
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123 | resume(3); |
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124 | } |
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125 | } |
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126 | |
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127 | void resume_swapped() { |
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128 | try { |
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129 | resume_swap(); |
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130 | } catchResume (3) { |
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131 | printf("resume_swapped caught exception 3\n"); |
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132 | } |
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133 | } |
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134 | |
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135 | // Terminate Rethrow: |
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136 | void reterminate() { |
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137 | try { |
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138 | try { |
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139 | terminate(2); |
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140 | } catch (2) { |
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141 | printf("reterminate 2 caught and " |
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142 | "will rethrow exception 2\n"); |
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143 | throw; |
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144 | } |
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145 | } catch (2) { |
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146 | printf("reterminate 1 caught exception 2\n"); |
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147 | } |
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148 | } |
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149 | |
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150 | // Resume Rethrow: |
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151 | void reresume() { |
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152 | try { |
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153 | try { |
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154 | resume(2); |
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155 | } catchResume (2) { |
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156 | printf("reresume 2 caught and rethrows exception 2\n"); |
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157 | throwResume; |
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158 | } |
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159 | } catchResume (2) { |
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160 | printf("reresume 1 caught exception 2\n"); |
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161 | } |
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162 | } |
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163 | |
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164 | // Terminate-Resume interaction: |
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165 | void fum() { |
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166 | // terminate block, call resume |
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167 | try { |
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168 | resume(3); |
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169 | } catch (3) { |
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170 | printf("fum caught exception 3\n"); |
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171 | } |
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172 | } |
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173 | |
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174 | void foe() { |
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175 | // resume block, call terminate |
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176 | try { |
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177 | terminate(3); |
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178 | } catchResume (3) { |
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179 | printf("foe caught exception 3\n"); |
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180 | } |
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181 | } |
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182 | |
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183 | void fy() { |
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184 | // terminate block calls fum, call foe |
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185 | try { |
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186 | foe(); |
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187 | } catch (3) { |
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188 | printf("fy caught exception 3\n"); |
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189 | fum(); |
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190 | } |
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191 | } |
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192 | |
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193 | void fee() { |
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194 | // resume block, call fy |
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195 | try { |
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196 | fy(); |
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197 | } catchResume (3) { |
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198 | printf("fee caught exception 3\n"); |
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199 | } |
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200 | } |
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201 | |
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202 | |
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203 | // main: choose which tests to run |
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204 | int main(int argc, char * argv[]) { |
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205 | signal_exit a = {"main function"}; |
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206 | |
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207 | foo(); printf("\n"); |
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208 | alpha(); printf("\n"); |
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209 | farewell(false); printf("\n"); |
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210 | farewell(true); printf("\n"); |
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211 | fallback(); printf("\n"); |
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212 | terminate_swapped(); printf("\n"); |
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213 | resume_swapped(); printf("\n"); |
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214 | reterminate(); printf("\n"); |
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215 | reresume(); printf("\n"); |
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216 | fee(); printf("\n"); |
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217 | // Uncaught termination test. |
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218 | terminate(7); |
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219 | } |
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