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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: --harmony-class-fields |
| 6 |
| 7 // this |
| 8 { |
| 9 class C { |
| 10 a = this; |
| 11 } |
| 12 |
| 13 let c = new C; |
| 14 assertEquals(c, c.a); |
| 15 } |
| 16 |
| 17 { |
| 18 class C { |
| 19 static a = this; |
| 20 } |
| 21 assertEquals(C, C.a); |
| 22 } |
| 23 |
| 24 { |
| 25 let sigil = {}; |
| 26 |
| 27 function outer() { |
| 28 let stored = null; |
| 29 class C { |
| 30 [stored = this] = 0; |
| 31 } |
| 32 |
| 33 assertEquals(sigil, stored); |
| 34 } |
| 35 |
| 36 outer.call(sigil); |
| 37 } |
| 38 |
| 39 // super |
| 40 { |
| 41 class Base { |
| 42 m() { |
| 43 return 0; |
| 44 } |
| 45 } |
| 46 |
| 47 class Derived extends Base { |
| 48 m() { |
| 49 return 1; |
| 50 } |
| 51 a = super.m(); |
| 52 } |
| 53 |
| 54 let c = new Derived; |
| 55 assertEquals(0, c.a); |
| 56 } |
| 57 |
| 58 { |
| 59 class Base { |
| 60 static m() { |
| 61 return 0; |
| 62 } |
| 63 } |
| 64 |
| 65 class Derived extends Base { |
| 66 static m() { |
| 67 return 1; |
| 68 } |
| 69 static a = super.m(); |
| 70 } |
| 71 |
| 72 assertEquals(0, Derived.a); |
| 73 } |
| 74 |
| 75 { |
| 76 let stored = null; |
| 77 |
| 78 class OuterBase { |
| 79 m() { |
| 80 return 0; |
| 81 } |
| 82 } |
| 83 |
| 84 class OuterDerived extends OuterBase { |
| 85 m() { |
| 86 return 1; |
| 87 } |
| 88 |
| 89 constructor() { |
| 90 super(); |
| 91 |
| 92 class InnerBase { |
| 93 m() { |
| 94 return 2; |
| 95 } |
| 96 } |
| 97 |
| 98 class InnerDerived extends InnerBase { |
| 99 m() { |
| 100 return 3; |
| 101 } |
| 102 [stored = super.m()] = 0; |
| 103 } |
| 104 } |
| 105 } |
| 106 |
| 107 new OuterDerived; |
| 108 |
| 109 assertEquals(0, stored); |
| 110 } |
| 111 |
| 112 // new.target |
| 113 { |
| 114 function outer() { |
| 115 class C { |
| 116 a = new.target; |
| 117 } |
| 118 |
| 119 let c = new C; |
| 120 assertTrue(c.hasOwnProperty('a')); |
| 121 assertEquals(undefined, c.a); |
| 122 } |
| 123 |
| 124 new outer; |
| 125 } |
| 126 |
| 127 { |
| 128 function outer() { |
| 129 class C { |
| 130 static a = new.target; |
| 131 } |
| 132 |
| 133 assertTrue(C.hasOwnProperty('a')); |
| 134 assertEquals(undefined, C.a); |
| 135 } |
| 136 |
| 137 new outer; |
| 138 } |
| 139 |
| 140 { |
| 141 function outer() { |
| 142 let stored = null; |
| 143 |
| 144 class C { |
| 145 [stored = new.target] = 0; |
| 146 } |
| 147 assertEquals(outer, stored); |
| 148 } |
| 149 |
| 150 new outer; |
| 151 } |
| 152 |
| 153 // arguments |
| 154 { |
| 155 function outer() { |
| 156 let stored_outer = arguments; |
| 157 let stored_ctor; |
| 158 |
| 159 class C { |
| 160 a = arguments; |
| 161 |
| 162 constructor() { |
| 163 stored_ctor = arguments; |
| 164 } |
| 165 } |
| 166 |
| 167 let c = new C; |
| 168 assertEquals('[object Arguments]', Object.prototype.toString.call(c.a)); |
| 169 assertFalse(stored_outer === c.a); |
| 170 assertFalse(stored_ctor === c.a); |
| 171 } |
| 172 |
| 173 outer(); |
| 174 } |
| 175 |
| 176 { |
| 177 function outer() { |
| 178 let stored_outer = arguments; |
| 179 |
| 180 class C { |
| 181 static a = arguments; |
| 182 } |
| 183 |
| 184 assertEquals('[object Arguments]', Object.prototype.toString.call(C.a)); |
| 185 assertFalse(stored_outer === C.a); |
| 186 } |
| 187 |
| 188 outer(); |
| 189 } |
| 190 |
| 191 { |
| 192 function outer() { |
| 193 let stored = null; |
| 194 |
| 195 class C { |
| 196 [stored = arguments] = 0; |
| 197 } |
| 198 |
| 199 assertEquals(arguments, stored); |
| 200 } |
| 201 |
| 202 outer(); |
| 203 } |
| 204 |
| 205 |
| 206 // ctor params |
| 207 { |
| 208 let b = 0; |
| 209 class C { |
| 210 a = b; |
| 211 |
| 212 constructor(b) {} |
| 213 } |
| 214 |
| 215 let c = new C(1); |
| 216 assertEquals(0, c.a); |
| 217 } |
| 218 |
| 219 // class declaration name |
| 220 { |
| 221 class C { |
| 222 a = C; |
| 223 } |
| 224 let stored_class = C; |
| 225 C = null; |
| 226 |
| 227 let c = new stored_class; |
| 228 assertEquals(stored_class, c.a); |
| 229 } |
| 230 |
| 231 { |
| 232 class C { |
| 233 static a = () => C; |
| 234 } |
| 235 let stored_class = C; |
| 236 C = null; |
| 237 |
| 238 assertEquals(stored_class, stored_class.a()); |
| 239 } |
| 240 |
| 241 { |
| 242 let stored = null; |
| 243 |
| 244 class C { |
| 245 [stored = () => C] = 0; |
| 246 } |
| 247 let stored_class = C; |
| 248 C = null; |
| 249 |
| 250 assertEquals(stored_class, stored()); |
| 251 } |
| 252 |
| 253 { |
| 254 assertThrows(() => { |
| 255 class C { |
| 256 static a = C; |
| 257 } |
| 258 }, ReferenceError); |
| 259 } |
| 260 |
| 261 { |
| 262 assertThrows(() => { |
| 263 class C { |
| 264 [C] = 0; |
| 265 } |
| 266 }, ReferenceError); |
| 267 } |
| 268 |
| 269 // class expression name |
| 270 { |
| 271 let C = null; |
| 272 let stored_class = class C { |
| 273 a = C; |
| 274 } |
| 275 |
| 276 let c = new stored_class; |
| 277 assertEquals(stored_class, c.a); |
| 278 } |
| 279 |
| 280 { |
| 281 let C = null; |
| 282 let stored_class = class C { |
| 283 static a = () => C; |
| 284 } |
| 285 |
| 286 assertEquals(stored_class, stored_class.a()); |
| 287 } |
| 288 |
| 289 { |
| 290 let C = null; |
| 291 let stored = null; |
| 292 |
| 293 let stored_class = class C { |
| 294 [stored = () => C] = 0; |
| 295 }; |
| 296 |
| 297 assertEquals(stored_class, stored()); |
| 298 } |
| 299 |
| 300 { |
| 301 assertThrows(() => ( |
| 302 class C { |
| 303 static a = C; |
| 304 } |
| 305 ), ReferenceError); |
| 306 } |
| 307 |
| 308 { |
| 309 assertThrows(() => ( |
| 310 class C { |
| 311 [C] = 0; |
| 312 } |
| 313 ), ReferenceError); |
| 314 } |
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