1 | // |
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2 | // Cforall Version 1.0.0 Copyright (C) 2016 University of Waterloo |
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3 | // |
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4 | // The contents of this file are covered under the licence agreement in the |
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5 | // file "LICENCE" distributed with Cforall. |
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6 | // |
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7 | // labelledExit.cfa -- |
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8 | // |
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9 | // Author : Peter A. Buhr |
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10 | // Created On : Wed Aug 10 07:29:39 2016 |
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11 | // Last Modified By : Peter A. Buhr |
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12 | // Last Modified On : Fri Jan 17 14:18:15 2025 |
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13 | // Update Count : 14 |
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14 | // |
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15 | |
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16 | int foo() { |
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17 | int i = 0; |
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18 | int x = 0, y = 0; |
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19 | |
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20 | // block, labelled exits |
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21 | |
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22 | Block: { |
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23 | if ( x == y ) { |
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24 | for ( ; i < y; ) { |
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25 | y += 1; |
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26 | if ( y < 10 ) break Block; |
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27 | } |
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28 | } |
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29 | } |
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30 | |
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31 | // loops, labelled exits |
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32 | |
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33 | w1: while ( y == 10 ) break w1; |
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34 | |
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35 | w2: while ( x < 10 ) { |
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36 | while (y < 5 ) { |
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37 | if ( y == 3 ) break w2; |
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38 | } |
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39 | x += 1; |
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40 | } |
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41 | |
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42 | A: for ( i = 0; i < 10; i += 1 ) { |
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43 | B: for ( i = 0; i < 10; i += 1 ) { |
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44 | C: for ( i = 0; i < 10; i += 1 ) { |
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45 | goto A; |
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46 | goto B; |
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47 | goto C; |
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48 | continue A; |
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49 | continue B; |
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50 | continue C; |
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51 | continue; |
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52 | break A; |
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53 | break B; |
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54 | break C; |
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55 | break; |
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56 | } |
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57 | } |
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58 | } |
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59 | |
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60 | D: for () { |
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61 | break D; |
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62 | continue D; |
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63 | } |
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64 | |
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65 | Z : i += 1; |
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66 | goto Z; |
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67 | X: Y: for () { |
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68 | i += 1; |
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69 | if ( i > 5 ) continue X; |
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70 | if ( i < 5 ) break X; |
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71 | if ( i < 5 ) break Y; |
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72 | break; |
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73 | } |
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74 | XX: for () { |
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75 | YY: for () { |
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76 | ZZ: for () { |
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77 | i += 1; |
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78 | if ( i > 5 ) continue XX; |
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79 | if ( i < 5 ) continue YY; |
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80 | if ( i < 5 ) continue ZZ; |
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81 | if ( i > 5 ) break XX; |
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82 | if ( i < 5 ) break YY; |
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83 | if ( i < 5 ) break ZZ; |
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84 | break; |
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85 | } |
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86 | } |
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87 | } |
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88 | |
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89 | for () ; |
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90 | for ( int i = 0 ;; ) ++i; |
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91 | for ( ; i < 0; ) ; |
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92 | for ( ; ; i += 1 ) ; |
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93 | L0: L1: L2: L3: L4: L5: L6: L7: L8: L9: |
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94 | L10: L11: L12: L13: L14: L15: L16: L17: L18: L19: |
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95 | L20: L21: L22: L23: L24: L25: L26: L27: L28: L29: |
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96 | L31: L32: L33: L34: |
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97 | for () { |
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98 | break L0; |
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99 | break L1; break L2; break L3; break L4; break L5; break L6; |
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100 | break L7; break L8; break L9; break L10; break L11; break L12; |
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101 | break L13; break L14; break L15; break L16; break L17; break L18; |
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102 | break L19; break L20; break L21; break L22; break L23; break L24; |
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103 | break L25; break L26; break L27; break L28; break L29; break L31; |
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104 | break L32; break L33; break L34; |
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105 | } |
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106 | |
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107 | // switch/choose, labelled exits |
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108 | |
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109 | Switch: switch ( i ) { |
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110 | default: |
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111 | i += 1; |
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112 | fallthrough; |
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113 | case 0: |
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114 | i += 1; |
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115 | break Switch; |
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116 | case 1: |
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117 | switch ( i ) { |
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118 | case 0: |
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119 | break Switch; |
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120 | default: |
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121 | ; break; |
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122 | } |
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123 | } |
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124 | |
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125 | Choose: choose ( i ) { |
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126 | default: |
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127 | i += 1; |
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128 | case 0: |
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129 | i += 1; |
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130 | break Choose; |
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131 | case 1: |
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132 | choose ( i ) { |
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133 | case 0: |
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134 | break; |
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135 | default: |
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136 | break Choose; |
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137 | } |
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138 | fallthrough; |
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139 | case 2: |
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140 | i += 1; |
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141 | } |
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142 | |
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143 | // all nested control options, labelled exits |
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144 | |
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145 | Comp: { |
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146 | Try: try { |
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147 | For: for ( ;; ) { |
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148 | While: while ( true ) { |
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149 | Do: do { |
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150 | If: if ( true ) { |
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151 | Switch2: switch ( 3 ) { |
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152 | case 3: |
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153 | break Try; |
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154 | break Comp; |
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155 | break For; continue For; |
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156 | break While; continue While; |
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157 | break Do; continue Do; |
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158 | break If; |
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159 | break Switch2; |
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160 | } // switch |
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161 | } // if |
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162 | } while ( true ); |
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163 | } // while |
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164 | } // for |
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165 | } finally {} // always executed |
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166 | } // compound |
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167 | |
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168 | // computed goto |
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169 | { |
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170 | void *array[] = { &&foo, &&bar, &&hack }; |
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171 | foo: bar: hack: |
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172 | &&foo; |
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173 | &&bar; |
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174 | goto *array[i]; |
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175 | } |
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176 | |
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177 | Q: if ( i > 5 ) { |
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178 | i += 1; |
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179 | break Q; |
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180 | } |
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181 | else |
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182 | i += 1; |
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183 | } |
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184 | |
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185 | int main() { |
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186 | printf("done\n"); |
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187 | } |
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188 | |
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189 | // Local Variables: // |
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190 | // tab-width: 4 // |
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191 | // compile-command: "cfa labelledExit.cfa" // |
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192 | // End: // |
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