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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
     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     exec_state.prepareStep(Debug.StepAction.StepIn);
     48   }
     49 }
     50 
     51 Debug.setListener(listener);
     52 
     53 
     54 function nop() {}
     55 
     56 
     57 function stress() {
     58   debugger;
     59 
     60   L: with ({x:12}) {
     61     break L;
     62   }
     63 
     64 
     65   with ({x: 'outer'}) {
     66     label: {
     67       with ({x: 'inner'}) {
     68         break label;
     69       }
     70     }
     71   }
     72 
     73 
     74   with ({x: 'outer'}) {
     75     label: {
     76       with ({x: 'inner'}) {
     77         break label;
     78       }
     79     }
     80     nop();
     81   }
     82 
     83 
     84   with ({x: 'outer'}) {
     85     label: {
     86       with ({x: 'middle'}) {
     87         with ({x: 'inner'}) {
     88           break label;
     89         }
     90       }
     91     }
     92   }
     93 
     94 
     95   with ({x: 'outer'}) {
     96     label: {
     97       with ({x: 'middle'}) {
     98         with ({x: 'inner'}) {
     99           break label;
    100         }
    101       }
    102     }
    103     nop();
    104   }
    105 
    106 
    107   with ({x: 'outer'}) {
    108     for (var i = 0; i < 3; ++i) {
    109       with ({x: 'inner' + i}) {
    110         continue;
    111       }
    112     }
    113   }
    114 
    115 
    116   with ({x: 'outer'}) {
    117     label: for (var i = 0; i < 3; ++i) {
    118       with ({x: 'middle' + i}) {
    119         for (var j = 0; j < 3; ++j) {
    120           with ({x: 'inner' + j}) {
    121             continue label;
    122           }
    123         }
    124       }
    125     }
    126   }
    127 
    128 
    129   with ({x: 'outer'}) {
    130     try {
    131       with ({x: 'inner'}) {
    132         throw 0;
    133       }
    134     } catch (e) {
    135     }
    136   }
    137 
    138 
    139   with ({x: 'outer'}) {
    140     try {
    141       with ({x: 'inner'}) {
    142         throw 0;
    143       }
    144     } catch (e) {
    145       nop();
    146     }
    147   }
    148 
    149 
    150   with ({x: 'outer'}) {
    151     try {
    152       with ({x: 'middle'}) {
    153         with ({x: 'inner'}) {
    154           throw 0;
    155         }
    156       }
    157     } catch (e) {
    158     }
    159   }
    160 
    161 
    162   try {
    163     with ({x: 'outer'}) {
    164       try {
    165         with ({x: 'inner'}) {
    166           throw 0;
    167         }
    168       } finally {
    169       }
    170     }
    171   } catch (e) {
    172   }
    173 
    174 
    175   try {
    176     with ({x: 'outer'}) {
    177       try {
    178         with ({x: 'inner'}) {
    179           throw 0;
    180         }
    181       } finally {
    182         nop();
    183       }
    184     }
    185   } catch (e) {
    186   }
    187 
    188 
    189   function stress1() {
    190     with ({x:12}) {
    191       return x;
    192     }
    193   }
    194   stress1();
    195 
    196 
    197   function stress2() {
    198     with ({x: 'outer'}) {
    199       with ({x: 'inner'}) {
    200         return x;
    201       }
    202     }
    203   }
    204   stress2();
    205 
    206   function stress3() {
    207     try {
    208       with ({x: 'inner'}) {
    209         throw 0;
    210       }
    211     } catch (e) {
    212       return e;
    213     }
    214   }
    215   stress3();
    216 
    217 
    218   function stress4() {
    219     try {
    220       with ({x: 'inner'}) {
    221         throw 0;
    222       }
    223     } catch (e) {
    224       with ({x: 'inner'}) {
    225         return e;
    226       }
    227     }
    228   }
    229   stress4();
    230 
    231 }
    232 stress();
    233