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      1 // Copyright 2011 the V8 project authors. All rights reserved.
      2 // Redistribution and use in source and binary forms, with or without
      3 // modification, are permitted provided that the following conditions are
      4 // met:
      5 //
      6 //     * Redistributions of source code must retain the above copyright
      7 //       notice, this list of conditions and the following disclaimer.
      8 //     * Redistributions in binary form must reproduce the above
      9 //       copyright notice, this list of conditions and the following
     10 //       disclaimer in the documentation and/or other materials provided
     11 //       with the distribution.
     12 //     * Neither the name of Google Inc. nor the names of its
     13 //       contributors may be used to endorse or promote products derived
     14 //       from this software without specific prior written permission.
     15 //
     16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     27 
     28 // Flags: --expose-debug-as debug --expose-natives-as=builtins
     29 
     30 // Check that the ScopeIterator can properly recreate the scope at
     31 // every point when stepping through functions.
     32 
     33 var Debug = debug.Debug;
     34 
     35 function listener(event, exec_state, event_data, data) {
     36   if (event == Debug.DebugEvent.Break) {
     37     // Access scope details.
     38     var scope_count = exec_state.frame().scopeCount();
     39     for (var i = 0; i < scope_count; i++) {
     40       var scope = exec_state.frame().scope(i);
     41       // assertTrue(scope.isScope());
     42       scope.scopeType();
     43       scope.scopeObject();
     44     }
     45 
     46     // Do steps until we reach the global scope again.
     47     if (true) {
     48       exec_state.prepareStep(Debug.StepAction.StepInMin, 1);
     49     }
     50   }
     51 }
     52 
     53 Debug.setListener(listener);
     54 
     55 
     56 function nop() {}
     57 
     58 
     59 function stress() {
     60   debugger;
     61 
     62   L: with ({x:12}) {
     63     break L;
     64   }
     65 
     66 
     67   with ({x: 'outer'}) {
     68     label: {
     69       with ({x: 'inner'}) {
     70         break label;
     71       }
     72     }
     73   }
     74 
     75 
     76   with ({x: 'outer'}) {
     77     label: {
     78       with ({x: 'inner'}) {
     79         break label;
     80       }
     81     }
     82     nop();
     83   }
     84 
     85 
     86   with ({x: 'outer'}) {
     87     label: {
     88       with ({x: 'middle'}) {
     89         with ({x: 'inner'}) {
     90           break label;
     91         }
     92       }
     93     }
     94   }
     95 
     96 
     97   with ({x: 'outer'}) {
     98     label: {
     99       with ({x: 'middle'}) {
    100         with ({x: 'inner'}) {
    101           break label;
    102         }
    103       }
    104     }
    105     nop();
    106   }
    107 
    108 
    109   with ({x: 'outer'}) {
    110     for (var i = 0; i < 3; ++i) {
    111       with ({x: 'inner' + i}) {
    112         continue;
    113       }
    114     }
    115   }
    116 
    117 
    118   with ({x: 'outer'}) {
    119     label: for (var i = 0; i < 3; ++i) {
    120       with ({x: 'middle' + i}) {
    121         for (var j = 0; j < 3; ++j) {
    122           with ({x: 'inner' + j}) {
    123             continue label;
    124           }
    125         }
    126       }
    127     }
    128   }
    129 
    130 
    131   with ({x: 'outer'}) {
    132     try {
    133       with ({x: 'inner'}) {
    134         throw 0;
    135       }
    136     } catch (e) {
    137     }
    138   }
    139 
    140 
    141   with ({x: 'outer'}) {
    142     try {
    143       with ({x: 'inner'}) {
    144         throw 0;
    145       }
    146     } catch (e) {
    147       nop();
    148     }
    149   }
    150 
    151 
    152   with ({x: 'outer'}) {
    153     try {
    154       with ({x: 'middle'}) {
    155         with ({x: 'inner'}) {
    156           throw 0;
    157         }
    158       }
    159     } catch (e) {
    160     }
    161   }
    162 
    163 
    164   try {
    165     with ({x: 'outer'}) {
    166       try {
    167         with ({x: 'inner'}) {
    168           throw 0;
    169         }
    170       } finally {
    171       }
    172     }
    173   } catch (e) {
    174   }
    175 
    176 
    177   try {
    178     with ({x: 'outer'}) {
    179       try {
    180         with ({x: 'inner'}) {
    181           throw 0;
    182         }
    183       } finally {
    184         nop();
    185       }
    186     }
    187   } catch (e) {
    188   }
    189 
    190 
    191   function stress1() {
    192     with ({x:12}) {
    193       return x;
    194     }
    195   }
    196   stress1();
    197 
    198 
    199   function stress2() {
    200     with ({x: 'outer'}) {
    201       with ({x: 'inner'}) {
    202         return x;
    203       }
    204     }
    205   }
    206   stress2();
    207 
    208   function stress3() {
    209     try {
    210       with ({x: 'inner'}) {
    211         throw 0;
    212       }
    213     } catch (e) {
    214       return e;
    215     }
    216   }
    217   stress3();
    218 
    219 
    220   function stress4() {
    221     try {
    222       with ({x: 'inner'}) {
    223         throw 0;
    224       }
    225     } catch (e) {
    226       with ({x: 'inner'}) {
    227         return e;
    228       }
    229     }
    230   }
    231   stress4();
    232 
    233 }
    234 stress();
    235