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| 1 // Copyright 2009 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 var expected_function_name = null; |
| 35 var expected_source_line_text = null; |
| 36 var expected_caller_source_line = null; |
| 37 var step_in_count = 2; |
| 38 |
| 39 // Simple debug event handler which first time will cause 'step in' action |
| 40 // to get into g.call and than check that execution is pauesed inside |
| 41 // function 'g'. |
| 42 function listener(event, exec_state, event_data, data) { |
| 43 try { |
| 44 if (event == Debug.DebugEvent.Break) { |
| 45 if (state == 0) { |
| 46 // Step into f(). |
| 47 exec_state.prepareStep(Debug.StepAction.StepIn, step_in_count); |
| 48 state = 2; |
| 49 } else if (state == 2) { |
| 50 assertEquals(expected_source_line_text, |
| 51 event_data.sourceLineText()); |
| 52 assertEquals(expected_function_name, event_data.func().name()); |
| 53 state = 3; |
| 54 } |
| 55 } |
| 56 } catch(e) { |
| 57 exception = e; |
| 58 } |
| 59 }; |
| 60 |
| 61 // Add the debug event listener. |
| 62 Debug.setListener(listener); |
| 63 |
| 64 |
| 65 function g() { |
| 66 return "s"; // expected line |
| 67 } |
| 68 |
| 69 function testFunction() { |
| 70 var f = g; |
| 71 var s = 1 +f(10); |
| 72 } |
| 73 |
| 74 function g2() { |
| 75 return "s2"; // expected line |
| 76 } |
| 77 |
| 78 function testFunction2() { |
| 79 var f = g2; |
| 80 var s = 1 +f(10, 20); |
| 81 } |
| 82 |
| 83 // Run twice: first time function will be compiled lazily, second time |
| 84 // cached version will be used. |
| 85 for (var i = 0; i < 2; i++) { |
| 86 state = 0; |
| 87 expected_function_name = 'g'; |
| 88 expected_source_line_text = ' return "s"; // expected line'; |
| 89 step_in_count = 2; |
| 90 // Set a break point and call to invoke the debug event listener. |
| 91 Debug.setBreakPoint(testFunction, 1, 0); |
| 92 testFunction(); |
| 93 assertNull(exception); |
| 94 assertEquals(3, state); |
| 95 } |
| 96 |
| 97 // Test stepping into function call when a breakpoint is set at the place |
| 98 // of call. Use different pair of functions so that g2 is compiled lazily. |
| 99 // Run twice: first time function will be compiled lazily, second time |
| 100 // cached version will be used. |
| 101 for (var i = 0; i < 2; i++) { |
| 102 state = 0; |
| 103 expected_function_name = 'g2'; |
| 104 expected_source_line_text = ' return "s2"; // expected line'; |
| 105 step_in_count = 1; |
| 106 // Set a break point and call to invoke the debug event listener. |
| 107 Debug.setBreakPoint(testFunction2, 2, 0); |
| 108 testFunction2(); |
| 109 assertNull(exception); |
| 110 assertEquals(3, state); |
| 111 } |
| 112 |
| 113 |
| 114 // Get rid of the debug event listener. |
| 115 Debug.setListener(null); |
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