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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.
     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 // Get the Debug object exposed from the debug context global object.
     30 Debug = debug.Debug
     31 
     32 var exception = null;
     33 var state = 0;
     34 
     35 // Simple debug event handler which first time will cause 'step in' action
     36 // to get into g.call and than check that execution is pauesed inside
     37 // function 'g'.
     38 function listener(event, exec_state, event_data, data) {
     39   try {
     40     if (event == Debug.DebugEvent.Break) {
     41       if (state == 0) {
     42         // Step into f2.call:
     43         exec_state.prepareStep(Debug.StepAction.StepIn, 2);
     44         state = 2;
     45       } else if (state == 2) {
     46         assertEquals('g', event_data.func().name());
     47         assertEquals('  return t + 1; // expected line',
     48                      event_data.sourceLineText());
     49         state = 3;
     50       }
     51     }
     52   } catch(e) {
     53     exception = e;
     54   }
     55 };
     56 
     57 // Add the debug event listener.
     58 Debug.setListener(listener);
     59 
     60 
     61 // Sample functions.
     62 function g(t) {
     63   return t + 1; // expected line
     64 }
     65 
     66 // Test step into function call from a function without local variables.
     67 function call1() {
     68   debugger;
     69   g.call(null, 3);
     70 }
     71 
     72 
     73 // Test step into function call from a function with some local variables.
     74 function call2() {
     75   var aLocalVar = 'test';
     76   var anotherLocalVar  = g(aLocalVar) + 's';
     77   var yetAnotherLocal = 10;
     78   debugger;
     79   g.call(null, 3);
     80 }
     81 
     82 // Test step into function call which is a part of an expression.
     83 function call3() {
     84   var alias = g;
     85   debugger;
     86   var r = 10 + alias.call(null, 3);
     87   var aLocalVar = 'test';
     88   var anotherLocalVar  = g(aLocalVar) + 's';
     89   var yetAnotherLocal = 10;
     90 }
     91 
     92 // Test step into function call from a function with some local variables.
     93 function call4() {
     94   var alias = g;
     95   debugger;
     96   alias.call(null, 3);
     97   var aLocalVar = 'test';
     98   var anotherLocalVar  = g(aLocalVar) + 's';
     99   var yetAnotherLocal = 10;
    100 }
    101 
    102 // Test step into function apply from a function without local variables.
    103 function apply1() {
    104   debugger;
    105   g.apply(null, [3]);
    106 }
    107 
    108 
    109 // Test step into function apply from a function with some local variables.
    110 function apply2() {
    111   var aLocalVar = 'test';
    112   var anotherLocalVar  = g(aLocalVar) + 's';
    113   var yetAnotherLocal = 10;
    114   debugger;
    115   g.apply(null, [3, 4]);
    116 }
    117 
    118 // Test step into function apply which is a part of an expression.
    119 function apply3() {
    120   var alias = g;
    121   debugger;
    122   var r = 10 + alias.apply(null, [3, 'unused arg']);
    123   var aLocalVar = 'test';
    124   var anotherLocalVar  = g(aLocalVar) + 's';
    125   var yetAnotherLocal = 10;
    126 }
    127 
    128 // Test step into function apply from a function with some local variables.
    129 function apply4() {
    130   var alias = g;
    131   debugger;
    132   alias.apply(null, [3]);
    133   var aLocalVar = 'test';
    134   var anotherLocalVar  = g(aLocalVar) + 's';
    135   var yetAnotherLocal = 10;
    136 }
    137 
    138 var testFunctions =
    139     [call1, call2, call3, call4, apply1, apply2, apply3, apply4];
    140 
    141 for (var i = 0; i < testFunctions.length; i++) {
    142   state = 0;
    143   testFunctions[i]();
    144   assertNull(exception);
    145   assertEquals(3, state);
    146 }
    147 
    148 // Get rid of the debug event listener.
    149 Debug.setListener(null);