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 --nocrankshaft 29// Get the Debug object exposed from the debug context global object. 30Debug = debug.Debug 31 32function DebuggerStatement() { 33 debugger; /*pause*/ 34} 35 36function TestCase(fun, frame_number) { 37 var exception = false; 38 var codeSnippet = undefined; 39 var resultPositions = undefined; 40 var step = 0; 41 42 function listener(event, exec_state, event_data, data) { 43 try { 44 if (event == Debug.DebugEvent.Break || 45 event == Debug.DebugEvent.Exception) { 46 if (step++ > 0) return; 47 assertHasLineMark(/pause/, exec_state.frame(0)); 48 assertHasLineMark(/positions/, exec_state.frame(frame_number)); 49 var frame = exec_state.frame(frame_number); 50 codeSnippet = frame.sourceLineText(); 51 resultPositions = frame.stepInPositions(); 52 } 53 } catch (e) { 54 exception = e 55 } 56 57 function assertHasLineMark(mark, frame) { 58 var line = frame.sourceLineText(); 59 if (!mark.exec(frame.sourceLineText())) { 60 throw new Error("Line " + line + " should contain mark " + mark); 61 } 62 } 63 } 64 65 Debug.setListener(listener); 66 67 fun(); 68 69 Debug.setListener(null); 70 71 assertTrue(!exception, exception); 72 73 var expectedPositions = {}; 74 var markPattern = new RegExp("/\\*#\\*/", "g"); 75 76 var matchResult; 77 while ( (matchResult = markPattern.exec(codeSnippet)) ) { 78 expectedPositions[matchResult.index] = true; 79 } 80 81 print(codeSnippet); 82 83 var decoratedResult = codeSnippet; 84 85 function replaceStringRange(s, pos, substitute) { 86 return s.substring(0, pos) + substitute + 87 s.substring(pos + substitute.length); 88 } 89 90 var markLength = 5; 91 var unexpectedPositionFound = false; 92 93 for (var i = 0; i < resultPositions.length; i++) { 94 var col = resultPositions[i].position.column - markLength; 95 if (expectedPositions[col]) { 96 delete expectedPositions[col]; 97 decoratedResult = replaceStringRange(decoratedResult, col, "*YES*"); 98 } else { 99 decoratedResult = replaceStringRange(decoratedResult, col, "!BAD!"); 100 unexpectedPositionFound = true; 101 } 102 } 103 104 print(decoratedResult); 105 106 for (var n in expectedPositions) { 107 assertTrue(false, "Some positions are not reported: " + decoratedResult); 108 break; 109 } 110 assertFalse(unexpectedPositionFound, "Found unexpected position: " + 111 decoratedResult); 112} 113 114function TestCaseWithDebugger(fun) { 115 TestCase(fun, 1); 116} 117 118function TestCaseWithBreakpoint(fun, line_number, frame_number) { 119 var breakpointId = Debug.setBreakPoint(fun, line_number); 120 TestCase(fun, frame_number); 121 Debug.clearBreakPoint(breakpointId); 122} 123 124function TestCaseWithException(fun, frame_number) { 125 Debug.setBreakOnException(); 126 TestCase(fun, frame_number); 127 Debug.clearBreakOnException(); 128} 129 130 131// Test cases. 132 133// Step in position, when the function call that we are standing at is already 134// being executed. 135var fun = function() { 136 function g(p) { 137 throw String(p); /*pause*/ 138 } 139 try { 140 var res = [ g(1), /*#*/g(2) ]; /*positions*/ 141 } catch (e) { 142 } 143}; 144TestCaseWithBreakpoint(fun, 2, 1); 145TestCaseWithException(fun, 1); 146 147 148// Step in position, when the function call that we are standing at is raising 149// an exception. 150var fun = function() { 151 var o = { 152 g: function(p) { 153 throw p; 154 } 155 }; 156 try { 157 var res = [ /*#*/f(1), /*#*/g(2) ]; /*pause, positions*/ 158 } catch (e) { 159 } 160}; 161TestCaseWithException(fun, 0); 162 163 164// Step-in position, when already paused almost on the first call site. 165var fun = function() { 166 function g(p) { 167 throw p; 168 } 169 try { 170 var res = [ /*#*/g(Math.rand), /*#*/g(2) ]; /*pause, positions*/ 171 } catch (e) { 172 } 173}; 174TestCaseWithBreakpoint(fun, 5, 0); 175 176// Step-in position, when already paused on the first call site. 177var fun = function() { 178 function g() { 179 throw "Debug"; 180 } 181 try { 182 var res = [ /*#*/g(), /*#*/g() ]; /*pause, positions*/ 183 } catch (e) { 184 } 185}; 186TestCaseWithBreakpoint(fun, 5, 0); 187 188 189// Method calls. 190var fun = function() { 191 var data = { 192 a: function() {} 193 }; 194 var res = [ DebuggerStatement(), data./*#*/a(), data[/*#*/String("a")]/*#*/(), data["a"]/*#*/(), data.a, data["a"] ]; /*positions*/ 195}; 196TestCaseWithDebugger(fun); 197 198// Function call on a value. 199var fun = function() { 200 function g(p) { 201 return g; 202 } 203 var res = [ DebuggerStatement(), /*#*/g(2), /*#*/g(2)/*#*/(3), /*#*/g(0)/*#*/(0)/*#*/(g) ]; /*positions*/ 204}; 205TestCaseWithDebugger(fun); 206 207// Local function call, closure function call, 208// local function construction call. 209var fun = (function(p) { 210 return function() { 211 function f(a, b) { 212 } 213 var res = /*#*/f(DebuggerStatement(), /*#*/p(/*#*/new f())); /*positions*/ 214 }; 215})(Object); 216TestCaseWithDebugger(fun); 217 218// Global function, global object construction, calls before pause point. 219var fun = (function(p) { 220 return function() { 221 var res = [ Math.abs(new Object()), DebuggerStatement(), Math./*#*/abs(4), /*#*/new Object()./*#*/toString() ]; /*positions*/ 222 }; 223})(Object); 224TestCaseWithDebugger(fun); 225