Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 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 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 5 | // Flags: --ignition-generators --harmony-do-expressions |
| 6 | // Flags: --allow-natives-syntax |
| 7 | |
| 8 | |
| 9 | function MaybeOptimizeOrDeoptimize(f) { |
| 10 | let x = Math.random(); // --random-seed makes this deterministic |
| 11 | if (x <= 0.33) { |
| 12 | %OptimizeFunctionOnNextCall(f); |
| 13 | } else if (x <= 0.66) { |
| 14 | %DeoptimizeFunction(f); |
| 15 | } |
| 16 | } |
| 17 | |
| 18 | function Next(generator, ...args) { |
| 19 | MaybeOptimizeOrDeoptimize(%GeneratorGetFunction(generator)); |
| 20 | return generator.next(...args); |
| 21 | } |
| 22 | |
| 23 | function Return(generator, ...args) { |
| 24 | MaybeOptimizeOrDeoptimize(%GeneratorGetFunction(generator)); |
| 25 | return generator.return(...args); |
| 26 | } |
| 27 | |
| 28 | function Throw(generator, ...args) { |
| 29 | MaybeOptimizeOrDeoptimize(%GeneratorGetFunction(generator)); |
| 30 | return generator.throw(...args); |
| 31 | } |
| 32 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 33 | |
| 34 | { // yield in try-catch |
| 35 | |
| 36 | let g = function*() { |
| 37 | try {yield 1} catch (error) {assertEquals("caught", error)} |
| 38 | }; |
| 39 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 40 | assertThrowsEquals(() => Throw(g(), "not caught"), "not caught"); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 41 | |
| 42 | { |
| 43 | let x = g(); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 44 | assertEquals({value: 1, done: false}, Next(x)); |
| 45 | assertEquals({value: undefined, done: true}, Throw(x, "caught")); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 46 | } |
| 47 | |
| 48 | { |
| 49 | let x = g(); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 50 | assertEquals({value: 1, done: false}, Next(x)); |
| 51 | assertEquals({value: undefined, done: true}, Next(x)); |
| 52 | assertThrowsEquals(() => Throw(x, "not caught"), "not caught"); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 53 | } |
| 54 | } |
| 55 | |
| 56 | |
| 57 | { // return that doesn't close |
| 58 | let g = function*() { try {return 42} finally {yield 43} }; |
| 59 | |
| 60 | { |
| 61 | let x = g(); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 62 | assertEquals({value: 43, done: false}, Next(x)); |
| 63 | assertEquals({value: 42, done: true}, Next(x)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 64 | } |
| 65 | } |
| 66 | |
| 67 | |
| 68 | { // return that doesn't close |
| 69 | let x; |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 70 | let g = function*() { try {return 42} finally {Throw(x, 666)} }; |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 71 | |
| 72 | { |
| 73 | x = g(); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 74 | assertThrows(() => Next(x), TypeError); // still executing |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 75 | } |
| 76 | } |
| 77 | |
| 78 | |
| 79 | { // yield in try-finally, finally clause performs return |
| 80 | |
| 81 | let g = function*() { try {yield 42} finally {return 13} }; |
| 82 | |
| 83 | { // "return" closes at suspendedStart |
| 84 | let x = g(); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 85 | assertEquals({value: 666, done: true}, Return(x, 666)); |
| 86 | assertEquals({value: undefined, done: true}, Next(x, 42)); |
| 87 | assertThrowsEquals(() => Throw(x, 43), 43); |
| 88 | assertEquals({value: 42, done: true}, Return(x, 42)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 89 | } |
| 90 | |
| 91 | { // "throw" closes at suspendedStart |
| 92 | let x = g(); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 93 | assertThrowsEquals(() => Throw(x, 666), 666); |
| 94 | assertEquals({value: undefined, done: true}, Next(x, 42)); |
| 95 | assertEquals({value: 43, done: true}, Return(x, 43)); |
| 96 | assertThrowsEquals(() => Throw(x, 44), 44); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 97 | } |
| 98 | |
| 99 | { // "next" closes at suspendedYield |
| 100 | let x = g(); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 101 | assertEquals({value: 42, done: false}, Next(x)); |
| 102 | assertEquals({value: 13, done: true}, Next(x, 666)); |
| 103 | assertEquals({value: undefined, done: true}, Next(x, 666)); |
| 104 | assertThrowsEquals(() => Throw(x, 666), 666); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 105 | } |
| 106 | |
| 107 | { // "return" closes at suspendedYield |
| 108 | let x = g(); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 109 | assertEquals({value: 42, done: false}, Next(x)); |
| 110 | assertEquals({value: 13, done: true}, Return(x, 666)); |
| 111 | assertEquals({value: undefined, done: true}, Next(x, 666)); |
| 112 | assertEquals({value: 666, done: true}, Return(x, 666)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 113 | } |
| 114 | |
| 115 | { // "throw" closes at suspendedYield |
| 116 | let x = g(); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 117 | assertEquals({value: 42, done: false}, Next(x)); |
| 118 | assertEquals({value: 13, done: true}, Throw(x, 666)); |
| 119 | assertThrowsEquals(() => Throw(x, 666), 666); |
| 120 | assertEquals({value: undefined, done: true}, Next(x, 666)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 121 | } |
| 122 | } |
| 123 | |
| 124 | |
| 125 | { // yield in try-finally, finally clause doesn't perform return |
| 126 | |
| 127 | let g = function*() { try {yield 42} finally {13} }; |
| 128 | |
| 129 | { // "return" closes at suspendedStart |
| 130 | let x = g(); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 131 | assertEquals({value: 666, done: true}, Return(x, 666)); |
| 132 | assertEquals({value: undefined, done: true}, Next(x, 42)); |
| 133 | assertThrowsEquals(() => Throw(x, 43), 43); |
| 134 | assertEquals({value: 42, done: true}, Return(x, 42)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 135 | } |
| 136 | |
| 137 | { // "throw" closes at suspendedStart |
| 138 | let x = g(); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 139 | assertThrowsEquals(() => Throw(x, 666), 666); |
| 140 | assertEquals({value: undefined, done: true}, Next(x, 42)); |
| 141 | assertEquals({value: 43, done: true}, Return(x, 43)); |
| 142 | assertThrowsEquals(() => Throw(x, 44), 44); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 143 | } |
| 144 | |
| 145 | { // "next" closes at suspendedYield |
| 146 | let x = g(); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 147 | assertEquals({value: 42, done: false}, Next(x)); |
| 148 | assertEquals({value: undefined, done: true}, Next(x, 666)); |
| 149 | assertEquals({value: undefined, done: true}, Next(x, 666)); |
| 150 | assertThrowsEquals(() => Throw(x, 666), 666); |
| 151 | assertEquals({value: 42, done: true}, Return(x, 42)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 152 | } |
| 153 | |
| 154 | { // "return" closes at suspendedYield |
| 155 | let x = g(); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 156 | assertEquals({value: 42, done: false}, Next(x)); |
| 157 | assertEquals({value: 666, done: true}, Return(x, 666)); |
| 158 | assertEquals({value: undefined, done: true}, Next(x, 666)); |
| 159 | assertThrowsEquals(() => Throw(x, 44), 44); |
| 160 | assertEquals({value: 42, done: true}, Return(x, 42)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 161 | } |
| 162 | |
| 163 | { // "throw" closes at suspendedYield |
| 164 | let x = g(); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 165 | assertEquals({value: 42, done: false}, Next(x)); |
| 166 | assertThrowsEquals(() => Throw(x, 666), 666); |
| 167 | assertEquals({value: undefined, done: true}, Next(x, 666)); |
| 168 | assertThrowsEquals(() => Throw(x, 666), 666); |
| 169 | assertEquals({value: 42, done: true}, Return(x, 42)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 170 | } |
| 171 | } |
| 172 | |
| 173 | |
| 174 | { // yield in try-finally, finally clause yields and performs return |
| 175 | |
| 176 | let g = function*() { try {yield 42} finally {yield 43; return 13} }; |
| 177 | |
| 178 | { |
| 179 | let x = g(); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 180 | assertEquals({value: 42, done: false}, Next(x)); |
| 181 | assertEquals({value: 43, done: false}, Return(x, 666)); |
| 182 | assertEquals({value: 13, done: true}, Next(x)); |
| 183 | assertEquals({value: 666, done: true}, Return(x, 666)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 184 | } |
| 185 | |
| 186 | { |
| 187 | let x = g(); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 188 | assertEquals({value: 666, done: true}, Return(x, 666)); |
| 189 | assertEquals({value: undefined, done: true}, Next(x)); |
| 190 | assertEquals({value: 666, done: true}, Return(x, 666)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 191 | } |
| 192 | } |
| 193 | |
| 194 | |
| 195 | { // yield in try-finally, finally clause yields and doesn't perform return |
| 196 | |
| 197 | let g = function*() { try {yield 42} finally {yield 43; 13} }; |
| 198 | |
| 199 | { |
| 200 | let x = g(); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 201 | assertEquals({value: 42, done: false}, Next(x)); |
| 202 | assertEquals({value: 43, done: false}, Return(x, 666)); |
| 203 | assertEquals({value: 666, done: true}, Next(x)); |
| 204 | assertEquals({value: 5, done: true}, Return(x, 5)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 205 | } |
| 206 | |
| 207 | { |
| 208 | let x = g(); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 209 | assertEquals({value: 666, done: true}, Return(x, 666)); |
| 210 | assertEquals({value: undefined, done: true}, Next(x)); |
| 211 | assertEquals({value: 666, done: true}, Return(x, 666)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 212 | } |
| 213 | } |
| 214 | |
| 215 | |
| 216 | { // yield*, finally clause performs return |
| 217 | |
| 218 | let h = function*() { try {yield 42} finally {yield 43; return 13} }; |
| 219 | let g = function*() { yield 1; yield yield* h(); }; |
| 220 | |
| 221 | { |
| 222 | let x = g(); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 223 | assertEquals({value: 1, done: false}, Next(x)); |
| 224 | assertEquals({value: 42, done: false}, Next(x)); |
| 225 | assertEquals({value: 43, done: false}, Next(x, 666)); |
| 226 | assertEquals({value: 13, done: false}, Next(x)); |
| 227 | assertEquals({value: undefined, done: true}, Next(x)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 228 | } |
| 229 | |
| 230 | { |
| 231 | let x = g(); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 232 | assertEquals({value: 1, done: false}, Next(x)); |
| 233 | assertEquals({value: 42, done: false}, Next(x)); |
| 234 | assertEquals({value: 43, done: false}, Return(x, 666)); |
| 235 | assertEquals({value: 13, done: false}, Next(x)); |
| 236 | assertEquals({value: undefined, done: true}, Next(x)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 237 | } |
| 238 | |
| 239 | { |
| 240 | let x = g(); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 241 | assertEquals({value: 1, done: false}, Next(x)); |
| 242 | assertEquals({value: 42, done: false}, Next(x)); |
| 243 | assertEquals({value: 43, done: false}, Throw(x, 666)); |
| 244 | assertEquals({value: 13, done: false}, Next(x)); |
| 245 | assertEquals({value: undefined, done: true}, Next(x)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 246 | } |
| 247 | } |
| 248 | |
| 249 | |
| 250 | { // yield*, finally clause does not perform return |
| 251 | |
| 252 | let h = function*() { try {yield 42} finally {yield 43; 13} }; |
| 253 | let g = function*() { yield 1; yield yield* h(); }; |
| 254 | |
| 255 | { |
| 256 | let x = g(); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 257 | assertEquals({value: 1, done: false}, Next(x)); |
| 258 | assertEquals({value: 42, done: false}, Next(x)); |
| 259 | assertEquals({value: 43, done: false}, Next(x, 666)); |
| 260 | assertEquals({value: undefined, done: false}, Next(x)); |
| 261 | assertEquals({value: undefined, done: true}, Next(x)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 262 | } |
| 263 | |
| 264 | { |
| 265 | let x = g(); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 266 | assertEquals({value: 1, done: false}, Next(x)); |
| 267 | assertEquals({value: 42, done: false}, Next(x)); |
| 268 | assertEquals({value: 43, done: false}, Return(x, 44)); |
| 269 | assertEquals({value: 44, done: false}, Next(x)); |
| 270 | assertEquals({value: undefined, done: true}, Next(x)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 271 | } |
| 272 | |
| 273 | { |
| 274 | let x = g(); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 275 | assertEquals({value: 1, done: false}, Next(x)); |
| 276 | assertEquals({value: 42, done: false}, Next(x)); |
| 277 | assertEquals({value: 43, done: false}, Throw(x, 666)); |
| 278 | assertThrowsEquals(() => Next(x), 666); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 279 | } |
| 280 | } |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 281 | |
| 282 | |
| 283 | { // yield*, .return argument is final result |
| 284 | |
| 285 | function* inner() { |
| 286 | yield 2; |
| 287 | } |
| 288 | |
| 289 | function* g() { |
| 290 | yield 1; |
| 291 | return yield* inner(); |
| 292 | } |
| 293 | |
| 294 | { |
| 295 | let x = g(); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 296 | assertEquals({value: 1, done: false}, Next(x)); |
| 297 | assertEquals({value: 2, done: false}, Next(x)); |
| 298 | assertEquals({value: 42, done: true}, Return(x, 42)); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 299 | } |
| 300 | } |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 301 | |
| 302 | |
| 303 | // More or less random tests from here on. |
| 304 | |
| 305 | |
| 306 | { |
| 307 | function* foo() { } |
| 308 | let g = foo(); |
| 309 | assertEquals({value: undefined, done: true}, Next(g)); |
| 310 | assertEquals({value: undefined, done: true}, Next(g)); |
| 311 | } |
| 312 | |
| 313 | { |
| 314 | function* foo() { return new.target } |
| 315 | let g = foo(); |
| 316 | assertEquals({value: undefined, done: true}, Next(g)); |
| 317 | assertEquals({value: undefined, done: true}, Next(g)); |
| 318 | } |
| 319 | |
| 320 | { |
| 321 | function* foo() { throw 666; return 42} |
| 322 | let g = foo(); |
| 323 | assertThrowsEquals(() => Next(g), 666); |
| 324 | assertEquals({value: undefined, done: true}, Next(g)); |
| 325 | } |
| 326 | |
| 327 | { |
| 328 | function* foo(a) { return a; } |
| 329 | let g = foo(42); |
| 330 | assertEquals({value: 42, done: true}, Next(g)); |
| 331 | assertEquals({value: undefined, done: true}, Next(g)); |
| 332 | } |
| 333 | |
| 334 | { |
| 335 | function* foo(a) { a.iwashere = true; return a; } |
| 336 | let x = {}; |
| 337 | let g = foo(x); |
| 338 | assertEquals({value: {iwashere: true}, done: true}, Next(g)); |
| 339 | assertEquals({value: undefined, done: true}, Next(g)); |
| 340 | } |
| 341 | |
| 342 | { |
| 343 | let a = 42; |
| 344 | function* foo() { return a; } |
| 345 | let g = foo(); |
| 346 | assertEquals({value: 42, done: true}, Next(g)); |
| 347 | assertEquals({value: undefined, done: true}, Next(g)); |
| 348 | } |
| 349 | |
| 350 | { |
| 351 | let a = 40; |
| 352 | function* foo(b) { return a + b; } |
| 353 | let g = foo(2); |
| 354 | assertEquals({value: 42, done: true}, Next(g)); |
| 355 | assertEquals({value: undefined, done: true}, Next(g)); |
| 356 | } |
| 357 | |
| 358 | { |
| 359 | let a = 40; |
| 360 | function* foo(b) { a--; b++; return a + b; } |
| 361 | let g = foo(2); |
| 362 | assertEquals({value: 42, done: true}, Next(g)); |
| 363 | assertEquals({value: undefined, done: true}, Next(g)); |
| 364 | } |
| 365 | |
| 366 | { |
| 367 | let g; |
| 368 | function* foo() { Next(g) } |
| 369 | g = foo(); |
| 370 | assertThrows(() => Next(g), TypeError); |
| 371 | assertEquals({value: undefined, done: true}, Next(g)); |
| 372 | } |
| 373 | |
| 374 | { |
| 375 | function* foo() { yield 2; yield 3; yield 4 } |
| 376 | g = foo(); |
| 377 | assertEquals({value: 2, done: false}, Next(g)); |
| 378 | assertEquals({value: 3, done: false}, Next(g)); |
| 379 | assertEquals({value: 4, done: false}, Next(g)); |
| 380 | assertEquals({value: undefined, done: true}, Next(g)); |
| 381 | assertEquals({value: undefined, done: true}, Next(g)); |
| 382 | } |
| 383 | |
| 384 | |
| 385 | { |
| 386 | function* foo() { yield 2; if (true) { yield 3 }; yield 4 } |
| 387 | g = foo(); |
| 388 | assertEquals({value: 2, done: false}, Next(g)); |
| 389 | assertEquals({value: 3, done: false}, Next(g)); |
| 390 | assertEquals({value: 4, done: false}, Next(g)); |
| 391 | assertEquals({value: undefined, done: true}, Next(g)); |
| 392 | assertEquals({value: undefined, done: true}, Next(g)); |
| 393 | } |
| 394 | |
| 395 | { |
| 396 | function* foo() { yield 2; if (true) { yield 3; yield 4 } } |
| 397 | g = foo(); |
| 398 | assertEquals({value: 2, done: false}, Next(g)); |
| 399 | assertEquals({value: 3, done: false}, Next(g)); |
| 400 | assertEquals({value: 4, done: false}, Next(g)); |
| 401 | assertEquals({value: undefined, done: true}, Next(g)); |
| 402 | assertEquals({value: undefined, done: true}, Next(g)); |
| 403 | } |
| 404 | |
| 405 | { |
| 406 | function* foo() { yield 2; if (false) { yield 3 }; yield 4 } |
| 407 | g = foo(); |
| 408 | assertEquals({value: 2, done: false}, Next(g)); |
| 409 | assertEquals({value: 4, done: false}, Next(g)); |
| 410 | assertEquals({value: undefined, done: true}, Next(g)); |
| 411 | assertEquals({value: undefined, done: true}, Next(g)); |
| 412 | } |
| 413 | |
| 414 | { |
| 415 | function* foo() { yield 2; while (true) { yield 3 }; yield 4 } |
| 416 | g = foo(); |
| 417 | assertEquals({value: 2, done: false}, Next(g)); |
| 418 | assertEquals({value: 3, done: false}, Next(g)); |
| 419 | assertEquals({value: 3, done: false}, Next(g)); |
| 420 | assertEquals({value: 3, done: false}, Next(g)); |
| 421 | assertEquals({value: 3, done: false}, Next(g)); |
| 422 | } |
| 423 | |
| 424 | { |
| 425 | function* foo() { yield 2; (yield 3) + 42; yield 4 } |
| 426 | g = foo(); |
| 427 | assertEquals({value: 2, done: false}, Next(g)); |
| 428 | assertEquals({value: 3, done: false}, Next(g)); |
| 429 | assertEquals({value: 4, done: false}, Next(g)); |
| 430 | } |
| 431 | |
| 432 | { |
| 433 | function* foo() { yield 2; (do {yield 3}) + 42; yield 4 } |
| 434 | g = foo(); |
| 435 | assertEquals({value: 2, done: false}, Next(g)); |
| 436 | assertEquals({value: 3, done: false}, Next(g)); |
| 437 | assertEquals({value: 4, done: false}, Next(g)); |
| 438 | } |
| 439 | |
| 440 | { |
| 441 | function* foo() { yield 2; return (yield 3) + 42; yield 4 } |
| 442 | g = foo(); |
| 443 | assertEquals({value: 2, done: false}, Next(g)); |
| 444 | assertEquals({value: 3, done: false}, Next(g)); |
| 445 | assertEquals({value: 42, done: true}, Next(g, 0)); |
| 446 | assertEquals({value: undefined, done: true}, Next(g)); |
| 447 | } |
| 448 | |
| 449 | { |
| 450 | let x = 42; |
| 451 | function* foo() { |
| 452 | yield x; |
| 453 | for (let x in {a: 1, b: 2}) { |
| 454 | let i = 2; |
| 455 | yield x; |
| 456 | yield i; |
| 457 | do { |
| 458 | yield i; |
| 459 | } while (i-- > 0); |
| 460 | } |
| 461 | yield x; |
| 462 | return 5; |
| 463 | } |
| 464 | g = foo(); |
| 465 | assertEquals({value: 42, done: false}, Next(g)); |
| 466 | assertEquals({value: 'a', done: false}, Next(g)); |
| 467 | assertEquals({value: 2, done: false}, Next(g)); |
| 468 | assertEquals({value: 2, done: false}, Next(g)); |
| 469 | assertEquals({value: 1, done: false}, Next(g)); |
| 470 | assertEquals({value: 0, done: false}, Next(g)); |
| 471 | assertEquals({value: 'b', done: false}, Next(g)); |
| 472 | assertEquals({value: 2, done: false}, Next(g)); |
| 473 | assertEquals({value: 2, done: false}, Next(g)); |
| 474 | assertEquals({value: 1, done: false}, Next(g)); |
| 475 | assertEquals({value: 0, done: false}, Next(g)); |
| 476 | assertEquals({value: 42, done: false}, Next(g)); |
| 477 | assertEquals({value: 5, done: true}, Next(g)); |
| 478 | } |
| 479 | |
| 480 | { |
| 481 | let a = 3; |
| 482 | function* foo() { |
| 483 | let b = 4; |
| 484 | yield 1; |
| 485 | { let c = 5; yield 2; yield a; yield b; yield c; } |
| 486 | } |
| 487 | g = foo(); |
| 488 | assertEquals({value: 1, done: false}, Next(g)); |
| 489 | assertEquals({value: 2, done: false}, Next(g)); |
| 490 | assertEquals({value: 3, done: false}, Next(g)); |
| 491 | assertEquals({value: 4, done: false}, Next(g)); |
| 492 | assertEquals({value: 5, done: false}, Next(g)); |
| 493 | assertEquals({value: undefined, done: true}, Next(g)); |
| 494 | } |
| 495 | |
| 496 | { |
| 497 | function* foo() { |
| 498 | yield 42; |
| 499 | yield 42; |
| 500 | yield 42; |
| 501 | yield 42; |
| 502 | yield 42; |
| 503 | yield 42; |
| 504 | yield 42; |
| 505 | yield 42; |
| 506 | yield 42; |
| 507 | yield 42; |
| 508 | yield 42; |
| 509 | yield 42; |
| 510 | yield 42; |
| 511 | yield 42; |
| 512 | yield 42; |
| 513 | yield 42; |
| 514 | yield 42; |
| 515 | yield 42; |
| 516 | yield 42; |
| 517 | yield 42; |
| 518 | yield 42; |
| 519 | yield 42; |
| 520 | yield 42; |
| 521 | yield 42; |
| 522 | yield 42; |
| 523 | yield 42; |
| 524 | yield 42; |
| 525 | yield 42; |
| 526 | yield 42; |
| 527 | yield 42; |
| 528 | yield 42; |
| 529 | yield 42; |
| 530 | yield 42; |
| 531 | yield 42; |
| 532 | yield 42; |
| 533 | yield 42; |
| 534 | yield 42; |
| 535 | yield 42; |
| 536 | yield 42; |
| 537 | yield 42; |
| 538 | yield 42; |
| 539 | yield 42; |
| 540 | yield 42; |
| 541 | yield 42; |
| 542 | yield 42; |
| 543 | yield 42; |
| 544 | yield 42; |
| 545 | yield 42; |
| 546 | yield 42; |
| 547 | yield 42; |
| 548 | yield 42; |
| 549 | yield 42; |
| 550 | yield 42; |
| 551 | yield 42; |
| 552 | yield 42; |
| 553 | yield 42; |
| 554 | yield 42; |
| 555 | yield 42; |
| 556 | yield 42; |
| 557 | yield 42; |
| 558 | yield 42; |
| 559 | yield 42; |
| 560 | yield 42; |
| 561 | yield 42; |
| 562 | yield 42; |
| 563 | yield 42; |
| 564 | yield 42; |
| 565 | yield 42; |
| 566 | yield 42; |
| 567 | yield 42; |
| 568 | yield 42; |
| 569 | yield 42; |
| 570 | yield 42; |
| 571 | yield 42; |
| 572 | yield 42; |
| 573 | yield 42; |
| 574 | yield 42; |
| 575 | yield 42; |
| 576 | yield 42; |
| 577 | yield 42; |
| 578 | yield 42; |
| 579 | yield 42; |
| 580 | yield 42; |
| 581 | yield 42; |
| 582 | yield 42; |
| 583 | yield 42; |
| 584 | yield 42; |
| 585 | yield 42; |
| 586 | yield 42; |
| 587 | yield 42; |
| 588 | yield 42; |
| 589 | yield 42; |
| 590 | yield 42; |
| 591 | yield 42; |
| 592 | yield 42; |
| 593 | yield 42; |
| 594 | yield 42; |
| 595 | yield 42; |
| 596 | yield 42; |
| 597 | yield 42; |
| 598 | } |
| 599 | g = foo(); |
| 600 | for (let i = 0; i < 100; ++i) { |
| 601 | assertEquals({value: 42, done: false}, i%25 === 0 ? Next(g) : g.next()); |
| 602 | } |
| 603 | assertEquals({value: undefined, done: true}, Next(g)); |
| 604 | } |
| 605 | |
| 606 | { |
| 607 | function* foo() { |
| 608 | for (let i = 0; i < 3; ++i) { |
| 609 | let j = 0 |
| 610 | yield i; |
| 611 | do { |
| 612 | yield (i + 10); |
| 613 | } while (++j < 2); |
| 614 | } |
| 615 | } |
| 616 | g = foo(); |
| 617 | assertEquals({value: 0, done: false}, Next(g)); |
| 618 | assertEquals({value: 10, done: false}, Next(g)); |
| 619 | assertEquals({value: 10, done: false}, Next(g)); |
| 620 | assertEquals({value: 1, done: false}, Next(g)); |
| 621 | assertEquals({value: 11, done: false}, Next(g)); |
| 622 | assertEquals({value: 11, done: false}, Next(g)); |
| 623 | assertEquals({value: 2, done: false}, Next(g)); |
| 624 | assertEquals({value: 12, done: false}, Next(g)); |
| 625 | assertEquals({value: 12, done: false}, Next(g)); |
| 626 | assertEquals({value: undefined, done: true}, Next(g)); |
| 627 | } |
| 628 | |
| 629 | { |
| 630 | let foo = function*() { |
| 631 | while (true) { |
| 632 | if (true || false) yield 42; |
| 633 | continue; |
| 634 | } |
| 635 | } |
| 636 | g = foo(); |
| 637 | assertEquals({value: 42, done: false}, Next(g)); |
| 638 | assertEquals({value: 42, done: false}, Next(g)); |
| 639 | assertEquals({value: 42, done: false}, Next(g)); |
| 640 | } |
| 641 | |
| 642 | { |
| 643 | let foo = function*() { |
| 644 | yield* (function*() { yield 42; }()); |
| 645 | assertUnreachable(); |
| 646 | } |
| 647 | g = foo(); |
| 648 | assertEquals({value: 42, done: false}, Next(g)); |
| 649 | assertEquals({value: 23, done: true}, Return(g, 23)); |
| 650 | } |