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| 1 // Copyright 2016 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 debug event catch prediction for thrown exceptions. We distinguish |
| 8 // between "caught" and "uncaught" based on the following assumptions: |
| 9 // 1) try-catch : Will always catch the exception. |
| 10 // 2) try-finally : Will always re-throw the exception. |
| 11 |
| 12 Debug = debug.Debug; |
| 13 |
| 14 var log = []; |
| 15 |
| 16 function listener(event, exec_state, event_data, data) { |
| 17 try { |
| 18 if (event == Debug.DebugEvent.Exception) { |
| 19 log.push([event_data.exception(), event_data.uncaught()]); |
| 20 } |
| 21 } catch (e) { |
| 22 %AbortJS(e + "\n" + e.stack); |
| 23 } |
| 24 } |
| 25 |
| 26 Debug.setBreakOnException(); |
| 27 Debug.setListener(listener); |
| 28 |
| 29 (function TryCatch() { |
| 30 log = []; // Clear log. |
| 31 function f(a) { |
| 32 try { |
| 33 throw "boom" + a; |
| 34 } catch(e) { |
| 35 return e; |
| 36 } |
| 37 } |
| 38 assertEquals("boom1", f(1)); |
| 39 assertEquals("boom2", f(2)); |
| 40 %OptimizeFunctionOnNextCall(f); |
| 41 assertEquals("boom3", f(3)); |
| 42 print("Collect log:", log); |
| 43 assertEquals([["boom1",false], ["boom2",false], ["boom3",false]], log); |
| 44 })(); |
| 45 |
| 46 (function TryFinally() { |
| 47 log = []; // Clear log. |
| 48 function f(a) { |
| 49 try { |
| 50 throw "baem" + a; |
| 51 } finally { |
| 52 return a + 10; |
| 53 } |
| 54 } |
| 55 assertEquals(11, f(1)); |
| 56 assertEquals(12, f(2)); |
| 57 %OptimizeFunctionOnNextCall(f); |
| 58 assertEquals(13, f(3)); |
| 59 print("Collect log:", log); |
| 60 assertEquals([["baem1",true], ["baem2",true], ["baem3",true]], log); |
| 61 })(); |
| 62 |
| 63 (function TryCatchFinally() { |
| 64 log = []; // Clear log. |
| 65 function f(a) { |
| 66 try { |
| 67 throw "wosh" + a; |
| 68 } catch(e) { |
| 69 return e + a; |
| 70 } finally { |
| 71 // Nothing. |
| 72 } |
| 73 } |
| 74 assertEquals("wosh11", f(1)); |
| 75 assertEquals("wosh22", f(2)); |
| 76 %OptimizeFunctionOnNextCall(f); |
| 77 assertEquals("wosh33", f(3)); |
| 78 print("Collect log:", log); |
| 79 assertEquals([["wosh1",false], ["wosh2",false], ["wosh3",false]], log); |
| 80 })(); |
| 81 |
| 82 (function TryCatchNestedFinally() { |
| 83 log = []; // Clear log. |
| 84 function f(a) { |
| 85 try { |
| 86 try { |
| 87 throw "bang" + a; |
| 88 } finally { |
| 89 // Nothing. |
| 90 } |
| 91 } catch(e) { |
| 92 return e + a; |
| 93 } |
| 94 } |
| 95 assertEquals("bang11", f(1)); |
| 96 assertEquals("bang22", f(2)); |
| 97 %OptimizeFunctionOnNextCall(f); |
| 98 assertEquals("bang33", f(3)); |
| 99 print("Collect log:", log); |
| 100 assertEquals([["bang1",false], ["bang2",false], ["bang3",false]], log); |
| 101 })(); |
| 102 |
| 103 (function TryFinallyNestedCatch() { |
| 104 log = []; // Clear log. |
| 105 function f(a) { |
| 106 try { |
| 107 try { |
| 108 throw "peng" + a; |
| 109 } catch(e) { |
| 110 return e |
| 111 } |
| 112 } finally { |
| 113 return a + 10; |
| 114 } |
| 115 } |
| 116 assertEquals(11, f(1)); |
| 117 assertEquals(12, f(2)); |
| 118 %OptimizeFunctionOnNextCall(f); |
| 119 assertEquals(13, f(3)); |
| 120 print("Collect log:", log); |
| 121 assertEquals([["peng1",false], ["peng2",false], ["peng3",false]], log); |
| 122 })(); |
| 123 |
| 124 (function TryFinallyNestedFinally() { |
| 125 log = []; // Clear log. |
| 126 function f(a) { |
| 127 try { |
| 128 try { |
| 129 throw "oops" + a; |
| 130 } finally { |
| 131 // Nothing. |
| 132 } |
| 133 } finally { |
| 134 return a + 10; |
| 135 } |
| 136 } |
| 137 assertEquals(11, f(1)); |
| 138 assertEquals(12, f(2)); |
| 139 %OptimizeFunctionOnNextCall(f); |
| 140 assertEquals(13, f(3)); |
| 141 print("Collect log:", log); |
| 142 assertEquals([["oops1",true], ["oops2",true], ["oops3",true]], log); |
| 143 })(); |
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