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 Debug = debug.Debug 31 32 // Simple debug event handler which just counts the number of break points hit. 33 var break_point_hit_count = 0; 34 35 function listener(event, exec_state, event_data, data) { 36 if (event == Debug.DebugEvent.Break) { 37 break_point_hit_count++; 38 } 39 }; 40 41 // Add the debug event listener. 42 Debug.setListener(listener); 43 44 eval( 45 "var inner;\n" + 46 "function outer() {\n" + // Non-trivial outer closure. 47 " var x = 5;\n" + 48 " function a() {\n" + 49 " var foo = 0, y = 7;\n" + 50 " function b() {\n" + 51 " var bar = 0, baz = 0, z = 11;\n" + 52 " function c() {\n" + 53 " return x + y + z;\n" + // Breakpoint line ( #8 ) 54 " }\n" + 55 " inner = c;\n" + 56 " return c();\n" + 57 " }\n" + 58 " return b();\n" + 59 " }\n" + 60 " return a();\n" + 61 "}" 62 ); 63 64 var script = Debug.findScript(outer); 65 66 // The debugger triggers compilation of inner closures. 67 assertEquals(0, Debug.scriptBreakPoints().length); 68 var sbp = Debug.setScriptBreakPointById(script.id, 8); 69 assertEquals(1, Debug.scriptBreakPoints().length); 70 71 // The compiled outer closure should behave correctly. 72 assertEquals(23, outer()); 73 assertEquals(1, break_point_hit_count); 74 75 // The compiled inner closure should behave correctly. 76 assertEquals(23, inner()); 77 assertEquals(2, break_point_hit_count); 78 79 // Remove script break point. 80 assertEquals(1, Debug.scriptBreakPoints().length); 81 Debug.clearBreakPoint(sbp); 82 assertEquals(0, Debug.scriptBreakPoints().length); 83
