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. 30Debug = debug.Debug 31 32var exception = null; 33var state = 0; 34var expected_function_name = null; 35var expected_source_line_text = null; 36var expected_caller_source_line = null; 37var 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'. 42function 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. 62Debug.setListener(listener); 63 64 65function g() { 66 return "s"; // expected line 67} 68 69function testFunction() { 70 var f = g; 71 var s = 1 +f(10); 72} 73 74function g2() { 75 return "s2"; // expected line 76} 77 78function testFunction2() { 79 var f = g2; 80 var s = 1 +f(10, 20); 81} 82 83// Run three times. First time the function will be compiled lazily, 84// second time cached version will be used. 85for (var i = 0; i < 3; 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. 101for (var i = 0; i < 3; 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. 115Debug.setListener(null); 116