1 // Copyright 2015 the V8 project authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 // Flags: --expose-debug-as debug --allow-natives-syntax 6 7 // Test that live-editing a frame above one that uses new.target succeeds. 8 9 Debug = debug.Debug 10 var wrapper_calls = 0; 11 var construct_calls = 0; 12 var exceptions = 0; 13 var results = []; 14 var replace_again; 15 16 eval(` 17 function LogNewTarget(arg) { 18 construct_calls++; 19 results.push(new.target); 20 } 21 function Wrapper() { 22 wrapper_calls++; 23 ReplaceOnce(); 24 new LogNewTarget(true); 25 } 26 `); 27 28 function Replace(fun, original, patch) { 29 %ExecuteInDebugContext(function() { 30 var change_log = []; 31 try { 32 var script = Debug.findScript(fun); 33 var patch_pos = script.source.indexOf(original); 34 Debug.LiveEdit.TestApi.ApplySingleChunkPatch( 35 script, patch_pos, original.length, patch, change_log); 36 } catch (e) { 37 exceptions++; 38 } 39 }); 40 } 41 42 function ReplaceOnce(x) { 43 if (replace_again) { 44 replace_again = false; 45 Replace(Wrapper, "true", "false"); 46 } 47 } 48 49 function Revert() { 50 Replace(Wrapper, "false", "true"); 51 } 52 53 replace_again = true; 54 ReplaceOnce(); 55 Wrapper(); 56 Revert(); 57 assertEquals(1, construct_calls); 58 assertEquals(1, wrapper_calls); 59 assertEquals(0, exceptions); // Replace succeeds 60 assertEquals([LogNewTarget], results); 61 62 Wrapper(); 63 assertEquals(2, construct_calls); 64 assertEquals(2, wrapper_calls); 65 assertEquals(0, exceptions); // Replace succeeds 66 assertEquals([LogNewTarget, LogNewTarget], results); 67 68 replace_again = true; 69 Wrapper(); 70 assertEquals(3, construct_calls); 71 assertEquals(4, wrapper_calls); // Restarts 72 assertEquals(0, exceptions); // Replace succeeds 73 assertEquals([LogNewTarget, LogNewTarget, LogNewTarget], results); 74
