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
