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| 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 |
| 30 // Get the Debug object exposed from the debug context global object. |
| 31 var Debug = debug.Debug; |
| 32 |
| 33 function CheckScope(scope_mirror, scope_expectations, expected_scope_type) { |
| 34 assertEquals(expected_scope_type, scope_mirror.scopeType()); |
| 35 |
| 36 var scope_object = scope_mirror.scopeObject().value(); |
| 37 |
| 38 for (var name in scope_expectations) { |
| 39 var actual = scope_object[name]; |
| 40 var expected = scope_expectations[name]; |
| 41 assertEquals(expected, actual); |
| 42 } |
| 43 } |
| 44 |
| 45 // A copy of the scope types from mirror-debugger.js. |
| 46 var ScopeType = { Global: 0, |
| 47 Local: 1, |
| 48 With: 2, |
| 49 Closure: 3, |
| 50 Catch: 4, |
| 51 Block: 5 }; |
| 52 |
| 53 var f1 = (function F1(x) { |
| 54 function F2(y) { |
| 55 var z = x + y; |
| 56 with ({w: 5, v: "Capybara"}) { |
| 57 var F3 = function(a, b) { |
| 58 function F4(p) { |
| 59 return p + a + b + z + w + v.length; |
| 60 } |
| 61 return F4; |
| 62 } |
| 63 return F3(4, 5); |
| 64 } |
| 65 } |
| 66 return F2(17); |
| 67 })(5); |
| 68 |
| 69 var mirror = Debug.MakeMirror(f1); |
| 70 |
| 71 assertEquals(5, mirror.scopeCount()); |
| 72 |
| 73 CheckScope(mirror.scope(0), { a: 4, b: 5 }, ScopeType.Closure); |
| 74 CheckScope(mirror.scope(1), { w: 5, v: "Capybara" }, ScopeType.With); |
| 75 CheckScope(mirror.scope(2), { y: 17, z: 22 }, ScopeType.Closure); |
| 76 CheckScope(mirror.scope(3), { x: 5 }, ScopeType.Closure); |
| 77 CheckScope(mirror.scope(4), {}, ScopeType.Global); |
| 78 |
| 79 var f2 = function() { return 5; } |
| 80 |
| 81 var mirror = Debug.MakeMirror(f2); |
| 82 |
| 83 assertEquals(1, mirror.scopeCount()); |
| 84 |
| 85 CheckScope(mirror.scope(0), {}, ScopeType.Global); |
| 86 |
| 87 var f3 = (function F1(invisible_parameter) { |
| 88 var invisible1 = 1; |
| 89 var visible1 = 10; |
| 90 return (function F2() { |
| 91 var invisible2 = 2; |
| 92 return (function F3() { |
| 93 var visible2 = 20; |
| 94 var invisible2 = 3; |
| 95 return (function () {return visible1 + visible2 + visible1a;}); |
| 96 })(); |
| 97 })(); |
| 98 })(5); |
| 99 |
| 100 var mirror = Debug.MakeMirror(f3); |
| 101 |
| 102 assertEquals(3, mirror.scopeCount()); |
| 103 |
| 104 CheckScope(mirror.scope(0), { visible2: 20 }, ScopeType.Closure); |
| 105 CheckScope(mirror.scope(1), { visible1: 10 }, ScopeType.Closure); |
| 106 CheckScope(mirror.scope(2), {}, ScopeType.Global); |
| 107 |
| 108 |
| 109 var f4 = (function One() { |
| 110 try { |
| 111 throw "I'm error 1"; |
| 112 } catch (e1) { |
| 113 try { |
| 114 throw "I'm error 2"; |
| 115 } catch (e2) { |
| 116 return function GetError() { |
| 117 return e1 + e2; |
| 118 }; |
| 119 } |
| 120 } |
| 121 })(); |
| 122 |
| 123 var mirror = Debug.MakeMirror(f4); |
| 124 |
| 125 assertEquals(3, mirror.scopeCount()); |
| 126 |
| 127 CheckScope(mirror.scope(0), { e2: "I'm error 2" }, ScopeType.Catch); |
| 128 CheckScope(mirror.scope(1), { e1: "I'm error 1" }, ScopeType.Catch); |
| 129 CheckScope(mirror.scope(2), {}, ScopeType.Global); |
| 130 |
| 131 |
| 132 var f5 = (function Raz(p1, p2) { |
| 133 var p3 = p1 + p2; |
| 134 return (function() { |
| 135 var p4 = 20; |
| 136 var p5 = 21; |
| 137 var p6 = 22; |
| 138 return eval("(function(p7){return p1 + p4 + p6 + p7})"); |
| 139 })(); |
| 140 })(1,2); |
| 141 |
| 142 var mirror = Debug.MakeMirror(f5); |
| 143 |
| 144 assertEquals(3, mirror.scopeCount()); |
| 145 |
| 146 CheckScope(mirror.scope(0), { p4: 20, p6: 22 }, ScopeType.Closure); |
| 147 CheckScope(mirror.scope(1), { p1: 1 }, ScopeType.Closure); |
| 148 CheckScope(mirror.scope(2), {}, ScopeType.Global); |
| 149 |
| 150 |
| 151 function CheckNoScopeVisible(f) { |
| 152 var mirror = Debug.MakeMirror(f); |
| 153 assertEquals(0, mirror.scopeCount()); |
| 154 } |
| 155 |
| 156 CheckNoScopeVisible(Number); |
| 157 |
| 158 CheckNoScopeVisible(Function.toString); |
| 159 |
| 160 // This getter is known to be implemented as closure. |
| 161 CheckNoScopeVisible(new Error().__lookupGetter__("stack")); |
| 162 |
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