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| 1 // Copyright 2011 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: --harmony-scoping | |
| 29 | |
| 30 "use strict"; | |
| 31 | |
| 32 // We want to test the context chain shape. In each of the tests cases | |
| 33 // below, the outer with is to force a runtime lookup of the identifier 'x' | |
| 34 // to actually verify that the inner context has been discarded. A static | |
| 35 // lookup of 'x' might accidentally succeed. | |
| 36 | |
| 37 { | |
| 38 let x = 2; | |
| 39 L: { | |
| 40 let x = 3; | |
| 41 assertEquals(3, x); | |
| 42 break L; | |
| 43 assertTrue(false); | |
| 44 } | |
| 45 assertEquals(2, x); | |
| 46 } | |
| 47 | |
| 48 do { | |
| 49 let x = 4; | |
| 50 assertEquals(4,x); | |
| 51 { | |
| 52 let x = 5; | |
| 53 assertEquals(5, x); | |
| 54 continue; | |
| 55 assertTrue(false); | |
| 56 } | |
| 57 } while (false); | |
| 58 | |
| 59 var caught = false; | |
| 60 try { | |
| 61 { | |
| 62 let xx = 18; | |
| 63 throw 25; | |
| 64 assertTrue(false); | |
| 65 } | |
| 66 } catch (e) { | |
| 67 caught = true; | |
| 68 assertEquals(25, e); | |
| 69 (function () { | |
| 70 try { | |
| 71 // NOTE: This checks that the block scope containing xx has been | |
| 72 // removed from the context chain. | |
| 73 eval('xx'); | |
| 74 assertTrue(false); // should not reach here | |
| 75 } catch (e2) { | |
| 76 assertTrue(e2 instanceof ReferenceError); | |
| 77 } | |
| 78 })(); | |
| 79 } | |
| 80 assertTrue(caught); | |
| 81 | |
| 82 | |
| 83 (function(x) { | |
| 84 label: { | |
| 85 let x = 'inner'; | |
| 86 break label; | |
| 87 } | |
| 88 assertEquals('outer', eval('x')); | |
| 89 })('outer'); | |
| 90 | |
| 91 | |
| 92 (function(x) { | |
| 93 label: { | |
| 94 let x = 'middle'; | |
| 95 { | |
| 96 let x = 'inner'; | |
| 97 break label; | |
| 98 } | |
| 99 } | |
| 100 assertEquals('outer', eval('x')); | |
| 101 })('outer'); | |
| 102 | |
| 103 | |
| 104 (function(x) { | |
| 105 for (var i = 0; i < 10; ++i) { | |
| 106 let x = 'inner' + i; | |
| 107 continue; | |
| 108 } | |
| 109 assertEquals('outer', eval('x')); | |
| 110 })('outer'); | |
| 111 | |
| 112 | |
| 113 (function(x) { | |
| 114 label: for (var i = 0; i < 10; ++i) { | |
| 115 let x = 'middle' + i; | |
| 116 for (var j = 0; j < 10; ++j) { | |
| 117 let x = 'inner' + j; | |
| 118 continue label; | |
| 119 } | |
| 120 } | |
| 121 assertEquals('outer', eval('x')); | |
| 122 })('outer'); | |
| 123 | |
| 124 | |
| 125 (function(x) { | |
| 126 try { | |
| 127 let x = 'inner'; | |
| 128 throw 0; | |
| 129 } catch (e) { | |
| 130 assertEquals('outer', eval('x')); | |
| 131 } | |
| 132 })('outer'); | |
| 133 | |
| 134 | |
| 135 (function(x) { | |
| 136 try { | |
| 137 let x = 'middle'; | |
| 138 { | |
| 139 let x = 'inner'; | |
| 140 throw 0; | |
| 141 } | |
| 142 } catch (e) { | |
| 143 assertEquals('outer', eval('x')); | |
| 144 } | |
| 145 })('outer'); | |
| 146 | |
| 147 | |
| 148 try { | |
| 149 (function(x) { | |
| 150 try { | |
| 151 let x = 'inner'; | |
| 152 throw 0; | |
| 153 } finally { | |
| 154 assertEquals('outer', eval('x')); | |
| 155 } | |
| 156 })('outer'); | |
| 157 } catch (e) { | |
| 158 if (e instanceof MjsUnitAssertionError) throw e; | |
| 159 } | |
| 160 | |
| 161 | |
| 162 try { | |
| 163 (function(x) { | |
| 164 try { | |
| 165 let x = 'middle'; | |
| 166 { | |
| 167 let x = 'inner'; | |
| 168 throw 0; | |
| 169 } | |
| 170 } finally { | |
| 171 assertEquals('outer', eval('x')); | |
| 172 } | |
| 173 })('outer'); | |
| 174 } catch (e) { | |
| 175 if (e instanceof MjsUnitAssertionError) throw e; | |
| 176 } | |
| 177 | |
| 178 | |
| 179 // Verify that the context is correctly set in the stack frame after exiting | |
| 180 // from with. | |
| 181 function f() {} | |
| 182 | |
| 183 (function(x) { | |
| 184 label: { | |
| 185 let x = 'inner'; | |
| 186 break label; | |
| 187 } | |
| 188 f(); // The context could be restored from the stack after the call. | |
| 189 assertEquals('outer', eval('x')); | |
| 190 })('outer'); | |
| 191 | |
| 192 | |
| 193 (function(x) { | |
| 194 for (var i = 0; i < 10; ++i) { | |
| 195 let x = 'inner'; | |
| 196 continue; | |
| 197 } | |
| 198 f(); | |
| 199 assertEquals('outer', eval('x')); | |
| 200 })('outer'); | |
| 201 | |
| 202 | |
| 203 (function(x) { | |
| 204 try { | |
| 205 let x = 'inner'; | |
| 206 throw 0; | |
| 207 } catch (e) { | |
| 208 f(); | |
| 209 assertEquals('outer', eval('x')); | |
| 210 } | |
| 211 })('outer'); | |
| 212 | |
| 213 | |
| 214 try { | |
| 215 (function(x) { | |
| 216 try { | |
| 217 let x = 'inner'; | |
| 218 throw 0; | |
| 219 } finally { | |
| 220 f(); | |
| 221 assertEquals('outer', eval('x')); | |
| 222 } | |
| 223 })('outer'); | |
| 224 } catch (e) { | |
| 225 if (e instanceof MjsUnitAssertionError) throw e; | |
| 226 } | |
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