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      1 // Copyright 2008 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.
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     14 //       from this software without specific prior written permission.
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     16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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     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 // Get the Debug object exposed from the debug context global object.
     30 Debug = debug.Debug
     31 
     32 // Simple debug event handler which just counts the number of break points hit.
     33 var break_point_hit_count;
     34 
     35 function listener(event, exec_state, event_data, data) {
     36   if (event == Debug.DebugEvent.Break) {
     37     break_point_hit_count++;
     38   }
     39 };
     40 
     41 // Add the debug event listener.
     42 Debug.setListener(listener);
     43 
     44 // Test function.
     45 function f() {a=1;b=2;};
     46 
     47 // This tests enabeling and disabling of break points including the case
     48 // with several break points in the same location.
     49 break_point_hit_count = 0;
     50 
     51 // Set a breakpoint in f.
     52 bp1 = Debug.setBreakPoint(f);
     53 f();
     54 assertEquals(1, break_point_hit_count);
     55 
     56 // Disable the breakpoint.
     57 Debug.disableBreakPoint(bp1);
     58 f();
     59 assertEquals(1, break_point_hit_count);
     60 
     61 // Enable the breakpoint.
     62 Debug.enableBreakPoint(bp1);
     63 f();
     64 assertEquals(2, break_point_hit_count);
     65 
     66 // Set another breakpoint in f at the same place.
     67 bp2 = Debug.setBreakPoint(f);
     68 f();
     69 assertEquals(3, break_point_hit_count);
     70 
     71 // Disable the second breakpoint.
     72 Debug.disableBreakPoint(bp2);
     73 f();
     74 assertEquals(4, break_point_hit_count);
     75 
     76 // Disable the first breakpoint.
     77 Debug.disableBreakPoint(bp1);
     78 f();
     79 assertEquals(4, break_point_hit_count);
     80 
     81 // Enable both breakpoints.
     82 Debug.enableBreakPoint(bp1);
     83 Debug.enableBreakPoint(bp2);
     84 f();
     85 assertEquals(5, break_point_hit_count);
     86 
     87 // Disable the first breakpoint.
     88 Debug.disableBreakPoint(bp1);
     89 f();
     90 assertEquals(6, break_point_hit_count);
     91 
     92 // Deactivate all breakpoints.
     93 Debug.debuggerFlags().breakPointsActive.setValue(false);
     94 f();
     95 assertEquals(6, break_point_hit_count);
     96 
     97 // Enable the first breakpoint.
     98 Debug.enableBreakPoint(bp1);
     99 f();
    100 assertEquals(6, break_point_hit_count);
    101 
    102 // Activate all breakpoints.
    103 Debug.debuggerFlags().breakPointsActive.setValue(true);
    104 f();
    105 assertEquals(7, break_point_hit_count);
    106