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      1 // Copyright 2012 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 
     31 Debug = debug.Debug
     32 
     33 
     34 function TestCase(test_scenario, expected_output) {
     35   // Global variable, accessed from eval'd script.
     36   test_output = "";
     37 
     38   var script_text_generator = (function() {
     39     var variables = { a: 1, b: 1, c: 1, d: 1, e: 1, f: 1 };
     40 
     41     return {
     42       get: function() {
     43         return "(function() {\n " +
     44             "  function A() {\n " +
     45             "    test_output += 'a' + " + variables.a + ";\n " +
     46             "    test_output += '=';\n " +
     47             "    debugger;\n " +
     48             "    return 'Capybara';\n " +
     49             "  }\n " +
     50             "  function B(p1, p2) {\n " +
     51             "    test_output += 'b' + " + variables.b + ";\n " +
     52             "    return A();\n " +
     53             "  }\n " +
     54             "  function C() {\n " +
     55             "    test_output += 'c' + " + variables.c + ";\n " +
     56             "    // Function call with argument adaptor is intentional.\n " +
     57             "    return B();\n " +
     58             "  }\n " +
     59             "  function D() {\n " +
     60             "    test_output += 'd' + " + variables.d + ";\n " +
     61             "    // Function call with argument adaptor is intentional.\n " +
     62             "    return C(1, 2);\n " +
     63             "  }\n " +
     64             "  function E() {\n " +
     65             "    test_output += 'e' + " + variables.e + ";\n " +
     66             "    return D();\n " +
     67             "  }\n " +
     68             "  function F() {\n " +
     69             "    test_output += 'f' + " + variables.f + ";\n " +
     70             "    return E();\n " +
     71             "  }\n " +
     72             "  return F();\n " +
     73             "})\n";
     74       },
     75       change: function(var_name) {
     76         variables[var_name]++;
     77       }
     78     };
     79   })();
     80 
     81   var test_fun = eval(script_text_generator.get());
     82 
     83   var script = Debug.findScript(test_fun);
     84 
     85   var scenario_pos = 0;
     86 
     87   function DebuggerStatementHandler() {
     88     while (true) {
     89       assertTrue(scenario_pos < test_scenario.length);
     90       var change_var = test_scenario[scenario_pos++];
     91       if (change_var == '=') {
     92         // Continue.
     93         return;
     94       }
     95       script_text_generator.change(change_var);
     96       try {
     97         Debug.LiveEdit.SetScriptSource(script, script_text_generator.get(),
     98             false, []);
     99       } catch (e) {
    100         print("LiveEdit exception: " + e);
    101         throw e;
    102       }
    103     }
    104   }
    105 
    106   var saved_exception = null;
    107 
    108   function listener(event, exec_state, event_data, data) {
    109     if (event == Debug.DebugEvent.Break) {
    110       try {
    111         DebuggerStatementHandler();
    112       } catch (e) {
    113         saved_exception = e;
    114       }
    115     } else {
    116       print("Other: " + event);
    117     }
    118   }
    119 
    120   Debug.setListener(listener);
    121   assertEquals("Capybara", test_fun());
    122   Debug.setListener(null);
    123 
    124   if (saved_exception) {
    125     print("Exception: " + saved_exception);
    126     assertUnreachable();
    127   }
    128 
    129   print(test_output);
    130 
    131   assertEquals(expected_output, test_output);
    132 }
    133 
    134 TestCase(['='], "f1e1d1c1b1a1=");
    135 
    136 TestCase(['c', '=', '='], "f1e1d1c1b1a1=c2b1a1=");
    137 
    138 TestCase(['b', 'c', 'd', 'e', '=', '='], "f1e1d1c1b1a1=e2d2c2b2a1=");
    139 
    140 TestCase(['b', 'c', '=', 'b', 'c', 'd', 'e', '=', '='], "f1e1d1c1b1a1=c2b2a1=e2d2c3b3a1=");
    141 
    142 TestCase(['e', 'f', '=', '='], "f1e1d1c1b1a1=f2e2d1c1b1a1=");
    143