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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 --harmony-scoping |
| 29 |
| 30 "use strict"; |
| 31 |
| 32 // Get the Debug object exposed from the debug context global object. |
| 33 var Debug = debug.Debug; |
| 34 |
| 35 function CheckScope(scope_mirror, scope_expectations, expected_scope_type) { |
| 36 assertEquals(expected_scope_type, scope_mirror.scopeType()); |
| 37 |
| 38 var scope_object = scope_mirror.scopeObject().value(); |
| 39 |
| 40 for (let name in scope_expectations) { |
| 41 let actual = scope_object[name]; |
| 42 let expected = scope_expectations[name]; |
| 43 assertEquals(expected, actual); |
| 44 } |
| 45 } |
| 46 |
| 47 // A copy of the scope types from mirror-debugger.js. |
| 48 var ScopeType = { Global: 0, |
| 49 Local: 1, |
| 50 With: 2, |
| 51 Closure: 3, |
| 52 Catch: 4, |
| 53 Block: 5 }; |
| 54 |
| 55 var f1 = (function F1(x) { |
| 56 function F2(y) { |
| 57 var z = x + y; |
| 58 { |
| 59 var w = 5; |
| 60 var v = "Capybara"; |
| 61 var F3 = function(a, b) { |
| 62 function F4(p) { |
| 63 return p + a + b + z + w + v.length; |
| 64 } |
| 65 return F4; |
| 66 } |
| 67 return F3(4, 5); |
| 68 } |
| 69 } |
| 70 return F2(17); |
| 71 })(5); |
| 72 |
| 73 var mirror = Debug.MakeMirror(f1); |
| 74 |
| 75 assertEquals(4, mirror.scopeCount()); |
| 76 |
| 77 CheckScope(mirror.scope(0), { a: 4, b: 5 }, ScopeType.Closure); |
| 78 CheckScope(mirror.scope(1), { z: 22, w: 5, v: "Capybara" }, ScopeType.Closure); |
| 79 CheckScope(mirror.scope(2), { x: 5 }, ScopeType.Closure); |
| 80 CheckScope(mirror.scope(3), {}, ScopeType.Global); |
| 81 |
| 82 var f2 = (function() { |
| 83 var v1 = 3; |
| 84 var v2 = 4; |
| 85 let l0 = 0; |
| 86 { |
| 87 var v3 = 5; |
| 88 let l1 = 6; |
| 89 let l2 = 7; |
| 90 { |
| 91 var v4 = 8; |
| 92 let l3 = 9; |
| 93 { |
| 94 var v5 = "Cat"; |
| 95 let l4 = 11; |
| 96 var v6 = l4; |
| 97 return function() { |
| 98 return l0 + v1 + v3 + l2 + l3 + v6; |
| 99 }; |
| 100 } |
| 101 } |
| 102 } |
| 103 })(); |
| 104 |
| 105 var mirror = Debug.MakeMirror(f2); |
| 106 |
| 107 assertEquals(5, mirror.scopeCount()); |
| 108 |
| 109 // Implementation artifact: l4 isn't used in closure, but still it is saved. |
| 110 CheckScope(mirror.scope(0), { l4: 11 }, ScopeType.Block); |
| 111 |
| 112 CheckScope(mirror.scope(1), { l3: 9 }, ScopeType.Block); |
| 113 CheckScope(mirror.scope(2), { l1: 6, l2: 7 }, ScopeType.Block); |
| 114 CheckScope(mirror.scope(3), { v1:3, l0: 0, v3: 5, v6: 11 }, ScopeType.Closure); |
| 115 CheckScope(mirror.scope(4), {}, ScopeType.Global); |
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