ADT
        ast-experimental
      
      
        
          | Last change
 on this file since 0cee082 was             f498c51, checked in by Peter A. Buhr <pabuhr@…>, 7 years ago | 
        
          | 
change printf to sout
 | 
        
          | 
              
Property                 mode
 set to                 100644 | 
        
          | File size:
            2.4 KB | 
      
      
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| 1 | // | 
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| 2 | // Cforall Version 1.0.0 Copyright (C) 2018 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 | // fallthrough.cfa -- | 
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| 8 | // | 
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| 9 | // Author           : Rob Schluntz | 
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| 10 | // Created On       : Wed Mar 14 10:06:25 2018 | 
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| 11 | // Last Modified By : Peter A. Buhr | 
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| 12 | // Last Modified On : Mon Dec 24 11:24:35 2018 | 
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| 13 | // Update Count     : 22 | 
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| 14 | // | 
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| 15 |  | 
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| 16 | #include <fstream.hfa> | 
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| 17 |  | 
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| 18 | void test(int choice) { | 
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| 19 | choose ( choice ) { | 
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| 20 | case 1: | 
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| 21 | sout | "case 1"; | 
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| 22 | fallthru; | 
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| 23 | case 2: | 
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| 24 | sout | "case 2"; | 
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| 25 | fallthru; | 
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| 26 | sout | "did not fallthru"; | 
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| 27 | if ( 7 ) fallthru common2; | 
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| 28 | fallthru common1; | 
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| 29 | case 3: | 
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| 30 | sout | "case 3"; | 
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| 31 | fallthru default; | 
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| 32 | fallthru common1; | 
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| 33 | common1: | 
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| 34 | sout | "common1"; | 
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| 35 | // break | 
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| 36 | case 4: | 
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| 37 | sout | "case 4"; | 
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| 38 | fallthru common2; | 
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| 39 | case 5: | 
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| 40 | sout | "case 5"; | 
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| 41 | fallthru common2; | 
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| 42 | fallthru default; | 
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| 43 | case 6: | 
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| 44 | sout | "case 6"; | 
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| 45 | fallthru common2; | 
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| 46 | common2: | 
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| 47 | sout | "common2"; | 
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| 48 | // break | 
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| 49 | default: | 
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| 50 | sout | "default"; | 
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| 51 | fallthru; | 
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| 52 | } // choose | 
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| 53 |  | 
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| 54 | sout | nl; | 
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| 55 |  | 
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| 56 | switch ( choice ) { | 
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| 57 | case 1: | 
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| 58 | sout | "case 1"; | 
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| 59 | switch ( choice ) { | 
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| 60 | case 1: | 
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| 61 | sout | "case 1"; | 
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| 62 | for ( int i = 0; i < 4; i += 1 ) { | 
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| 63 | sout | i; | 
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| 64 | if ( i == 2 ) fallthru common; | 
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| 65 | } // for | 
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| 66 | } // switch | 
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| 67 | break; | 
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| 68 | case 5: | 
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| 69 | sout | "case 5"; | 
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| 70 | if ( choice == 5 ) { | 
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| 71 | if ( choice != 5 ) { | 
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| 72 | sout | "error"; | 
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| 73 | } else { | 
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| 74 | sout | "check"; | 
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| 75 | fallthru common; | 
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| 76 | } // if | 
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| 77 | } // if | 
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| 78 | common: | 
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| 79 | sout | "common"; | 
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| 80 | fallthru; | 
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| 81 | break; | 
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| 82 | default: | 
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| 83 | sout | "default"; | 
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| 84 | fallthru; | 
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| 85 | } // switch | 
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| 86 |  | 
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| 87 | #if ERR1 | 
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| 88 | // ERROR: fallthrough must be enclosed in switch or choose | 
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| 89 | fallthru; | 
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| 90 | // ERROR: fallthrough must be enclosed in switch or choose | 
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| 91 | fallthru common4; | 
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| 92 | // ERROR: fallthrough must be enclosed in switch or choose | 
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| 93 | fallthru default; | 
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| 94 | choose ( 3 ) { | 
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| 95 | case 2: | 
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| 96 | for () { | 
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| 97 | choose ( 2 ) { | 
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| 98 | case 1: | 
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| 99 | // ERROR: default is later, but in a different switch | 
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| 100 | fallthru default; | 
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| 101 | // ERROR: common3 is later, but not at the same level as a case clause | 
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| 102 | fallthru common3; | 
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| 103 | } | 
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| 104 | common3: ; | 
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| 105 | } // for | 
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| 106 | default: | 
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| 107 | case 1: | 
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| 108 | common4: | 
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| 109 | // ERROR: attempt to jump up with fallthrough | 
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| 110 | if ( 7 ) fallthru common4; | 
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| 111 | // ERROR: attempt to jump up with fallthrough | 
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| 112 | fallthru default; | 
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| 113 | } // choose | 
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| 114 | #endif | 
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| 115 | } | 
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| 116 |  | 
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| 117 | int main() { | 
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| 118 | test( 1 ); | 
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| 119 | sout | nl; | 
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| 120 | test( 5 ); | 
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| 121 | } | 
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| 122 |  | 
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| 123 | // Local Variables: // | 
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| 124 | // tab-width: 4 // | 
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| 125 | // compile-command: "cfa fallthrough.cfa" // | 
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| 126 | // End: // | 
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