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Edit File: debug-stepout-recursive-function.js

// Copyright 2009 the V8 project authors. All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
//       notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
//       copyright notice, this list of conditions and the following
//       disclaimer in the documentation and/or other materials provided
//       with the distribution.
//     * Neither the name of Google Inc. nor the names of its
//       contributors may be used to endorse or promote products derived
//       from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

// Flags: --expose-debug-as debug
// Get the Debug object exposed from the debug context global object.
Debug = debug.Debug

var exception = null;
var step_out_count = 1;

// Simple debug event handler which counts the number of breaks hit and steps.
var break_point_hit_count = 0;
function listener(event, exec_state, event_data, data) {
  try {
    if (event == Debug.DebugEvent.Break) {
      break_point_hit_count++;
      // Continue stepping until returned to bottom frame.
      if (exec_state.frameCount() > 1) {
        exec_state.prepareStep(Debug.StepAction.StepOut, step_out_count);
      }

}
  } catch(e) {
    exception = e;
  }

};

function BeginTest(name) {
  test_name = name;
  break_point_hit_count = 0;
  exception = null;
}

function EndTest(expected_break_point_hit_count) {
  assertEquals(expected_break_point_hit_count, break_point_hit_count, test_name);
  assertNull(exception, test_name);
  test_name = null;
}

// Add the debug event listener.
Debug.setListener(listener);

var shouldBreak = null;
function fact(x) {
  if (shouldBreak(x)) {
    debugger;
  }
  if (x < 2) {
    return 1;
  } else {
    return x*fact(x-1);
  }
}

BeginTest('Test 1');
shouldBreak = function(x) { return x == 3; };
step_out_count = 1;
fact(3);
EndTest(2);

BeginTest('Test 2');
shouldBreak = function(x) { return x == 2; };
step_out_count = 1;
fact(3);
EndTest(3);

BeginTest('Test 3');
shouldBreak = function(x) { return x == 1; };
step_out_count = 2;
fact(3);
EndTest(2);

BeginTest('Test 4');
shouldBreak = function(x) { return x == 1 || x == 3; };
step_out_count = 2;
fact(3);
EndTest(3);

// Get rid of the debug event listener.
Debug.setListener(null);

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