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| 1 // Copyright 2015 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-spreadcalls |
| 6 |
| 7 (function testSpreadCallsStrict() { |
| 8 "use strict" |
| 9 function countArgs() { return arguments.length; } |
| 10 |
| 11 // Test this argument |
| 12 function returnThis() { return this; } |
| 13 assertEquals(void 0, returnThis(..."test")); |
| 14 |
| 15 // Test argument counting with different iterables |
| 16 assertEquals(0, countArgs(..."")); |
| 17 assertEquals(4, countArgs(..."test")); |
| 18 assertEquals(4, countArgs(..."tes", ..."t")); |
| 19 assertEquals(4, countArgs("t", ..."es", "t")); |
| 20 assertEquals(4, countArgs("tes", ..."t!!")); |
| 21 |
| 22 assertEquals(1, countArgs(...[1])); |
| 23 assertEquals(2, countArgs(...[1, 2])); |
| 24 assertEquals(3, countArgs(...[1, 2, 3])); |
| 25 assertEquals(4, countArgs(...[1, 2, 3, 4])); |
| 26 assertEquals(5, countArgs(...[1, 2, 3, 4, 5])); |
| 27 assertEquals(6, countArgs(...[1, 2, 3, 4, 5, 6])); |
| 28 |
| 29 assertEquals(1, countArgs(...new Set([1]))); |
| 30 assertEquals(2, countArgs(...new Set([1, 2]))); |
| 31 assertEquals(3, countArgs(...new Set([1, 2, 3]))); |
| 32 assertEquals(4, countArgs(...new Set([1, 2, 3, 4]))); |
| 33 assertEquals(5, countArgs(...new Set([1, 2, 3, 4, 5]))); |
| 34 assertEquals(6, countArgs(...new Set([1, 2, 3, 4, 5, 6]))); |
| 35 |
| 36 assertEquals(3, countArgs(...(function*(){ yield 1; yield 2; yield 3; })())); |
| 37 |
| 38 // Test values |
| 39 function sum() { |
| 40 var sum = arguments[0]; |
| 41 for (var i = 1; i < arguments.length; ++i) { |
| 42 sum += arguments[i]; |
| 43 } |
| 44 return sum; |
| 45 } |
| 46 |
| 47 assertEquals(void 0, sum(..."")); |
| 48 assertEquals(void 0, sum(...[])); |
| 49 assertEquals(void 0, sum(...new Set)); |
| 50 assertEquals(void 0, sum(...(function*() { })())); |
| 51 |
| 52 assertEquals("test", sum(..."test")); |
| 53 assertEquals(10, sum(...[1, 2, 3, 4])); |
| 54 assertEquals(10, sum(...[1, 2, 3], 4)); |
| 55 assertEquals(10, sum(1, ...[2, 3], 4)); |
| 56 assertEquals(10, sum(1, ...[2, 3], ...[4])); |
| 57 assertEquals(10, sum(1, 2, ...[3, 4])); |
| 58 assertEquals(10, sum(...new Set([1, 2, 3, 4]))); |
| 59 assertEquals(10, sum(...(function*() { |
| 60 yield 1; |
| 61 yield 2; |
| 62 yield 3; |
| 63 yield 4; |
| 64 })())); |
| 65 |
| 66 // nested spreads |
| 67 function makeArray() { |
| 68 var result = []; |
| 69 for (var i = 0; i < arguments.length; ++i) { |
| 70 result.push(arguments[i]); |
| 71 } |
| 72 return result; |
| 73 } |
| 74 assertEquals(10, sum(...makeArray(...[1, 2, 3, 4]))); |
| 75 assertEquals("test!!!", sum(...makeArray(..."test!!!"))); |
| 76 |
| 77 // Interleaved spread/unspread args |
| 78 assertEquals(36, sum(0, ...[1], 2, 3, ...[4, 5], 6, 7, 8)); |
| 79 assertEquals(45, sum(0, ...[1], 2, 3, ...[4, 5], 6, 7, 8, ...[9])); |
| 80 |
| 81 // Methods |
| 82 var O = { |
| 83 returnThis: returnThis, |
| 84 countArgs: countArgs, |
| 85 sum: sum, |
| 86 makeArray: makeArray, |
| 87 |
| 88 nested: { |
| 89 returnThis: returnThis, |
| 90 countArgs: countArgs, |
| 91 sum: sum, |
| 92 makeArray: makeArray |
| 93 } |
| 94 }; |
| 95 |
| 96 // Test this argument |
| 97 assertEquals(O, O.returnThis(..."test")); |
| 98 assertEquals(O, O["returnThis"](..."test")); |
| 99 assertEquals(O.nested, O.nested.returnThis(..."test")); |
| 100 assertEquals(O.nested, O.nested["returnThis"](..."test")); |
| 101 |
| 102 // Test argument counting with different iterables |
| 103 assertEquals(0, O.countArgs(..."")); |
| 104 assertEquals(4, O.countArgs(..."test")); |
| 105 assertEquals(4, O.countArgs(..."tes", ..."t")); |
| 106 assertEquals(4, O.countArgs("t", ..."es", "t")); |
| 107 assertEquals(4, O.countArgs("tes", ..."t!!")); |
| 108 |
| 109 assertEquals(1, O.countArgs(...[1])); |
| 110 assertEquals(2, O.countArgs(...[1, 2])); |
| 111 assertEquals(3, O.countArgs(...[1, 2, 3])); |
| 112 assertEquals(4, O.countArgs(...[1, 2, 3, 4])); |
| 113 assertEquals(5, O.countArgs(...[1, 2, 3, 4, 5])); |
| 114 assertEquals(6, O.countArgs(...[1, 2, 3, 4, 5, 6])); |
| 115 |
| 116 assertEquals(1, O.countArgs(...new Set([1]))); |
| 117 assertEquals(2, O.countArgs(...new Set([1, 2]))); |
| 118 assertEquals(3, O.countArgs(...new Set([1, 2, 3]))); |
| 119 assertEquals(4, O.countArgs(...new Set([1, 2, 3, 4]))); |
| 120 assertEquals(5, O.countArgs(...new Set([1, 2, 3, 4, 5]))); |
| 121 assertEquals(6, O.countArgs(...new Set([1, 2, 3, 4, 5, 6]))); |
| 122 |
| 123 assertEquals(3, O.countArgs( |
| 124 ...(function*(){ yield 1; yield 2; yield 3; })())); |
| 125 |
| 126 // Test values |
| 127 assertEquals(void 0, O.sum(..."")); |
| 128 assertEquals(void 0, O.sum(...[])); |
| 129 assertEquals(void 0, O.sum(...new Set)); |
| 130 assertEquals(void 0, O.sum(...(function*() { })())); |
| 131 |
| 132 assertEquals("test", O.sum(..."test")); |
| 133 assertEquals(10, O.sum(...[1, 2, 3, 4])); |
| 134 assertEquals(10, O.sum(...[1, 2, 3], 4)); |
| 135 assertEquals(10, O.sum(1, ...[2, 3], 4)); |
| 136 assertEquals(10, O.sum(1, ...[2, 3], ...[4])); |
| 137 assertEquals(10, O.sum(1, 2, ...[3, 4])); |
| 138 assertEquals(10, O.sum(...new Set([1, 2, 3, 4]))); |
| 139 assertEquals(10, O.sum(...(function*() { |
| 140 yield 1; |
| 141 yield 2; |
| 142 yield 3; |
| 143 yield 4; |
| 144 })())); |
| 145 |
| 146 // nested spreads |
| 147 assertEquals(10, O.sum(...O.makeArray(...[1, 2, 3, 4]))); |
| 148 assertEquals("test!!!", O.sum(...O.makeArray(..."test!!!"))); |
| 149 |
| 150 // Interleaved spread/unspread args |
| 151 assertEquals(36, O.sum(0, ...[1], 2, 3, ...[4, 5], 6, 7, 8)); |
| 152 assertEquals(45, O.sum(0, ...[1], 2, 3, ...[4, 5], 6, 7, 8, ...[9])); |
| 153 })(); |
| 154 |
| 155 |
| 156 (function testSpreadCallsSloppy() { |
| 157 // Test this argument |
| 158 function returnThis() { return this; } |
| 159 assertEquals(this, returnThis(..."test")); |
| 160 |
| 161 function countArgs() { return arguments.length; } |
| 162 |
| 163 // Test argument counting with different iterables |
| 164 assertEquals(0, countArgs(..."")); |
| 165 assertEquals(4, countArgs(..."test")); |
| 166 assertEquals(4, countArgs(..."tes", ..."t")); |
| 167 assertEquals(4, countArgs("t", ..."es", "t")); |
| 168 assertEquals(4, countArgs("tes", ..."t!!")); |
| 169 |
| 170 assertEquals(1, countArgs(...[1])); |
| 171 assertEquals(2, countArgs(...[1, 2])); |
| 172 assertEquals(3, countArgs(...[1, 2, 3])); |
| 173 assertEquals(4, countArgs(...[1, 2, 3, 4])); |
| 174 assertEquals(5, countArgs(...[1, 2, 3, 4, 5])); |
| 175 assertEquals(6, countArgs(...[1, 2, 3, 4, 5, 6])); |
| 176 |
| 177 assertEquals(1, countArgs(...new Set([1]))); |
| 178 assertEquals(2, countArgs(...new Set([1, 2]))); |
| 179 assertEquals(3, countArgs(...new Set([1, 2, 3]))); |
| 180 assertEquals(4, countArgs(...new Set([1, 2, 3, 4]))); |
| 181 assertEquals(5, countArgs(...new Set([1, 2, 3, 4, 5]))); |
| 182 assertEquals(6, countArgs(...new Set([1, 2, 3, 4, 5, 6]))); |
| 183 |
| 184 assertEquals(3, countArgs(...(function*(){ |
| 185 yield 1; |
| 186 yield 2; |
| 187 yield 3; |
| 188 })())); |
| 189 |
| 190 // Test values |
| 191 function sum() { |
| 192 var sum = arguments[0]; |
| 193 for (var i = 1; i < arguments.length; ++i) { |
| 194 sum += arguments[i]; |
| 195 } |
| 196 return sum; |
| 197 } |
| 198 |
| 199 assertEquals(void 0, sum(..."")); |
| 200 assertEquals(void 0, sum(...[])); |
| 201 assertEquals(void 0, sum(...new Set)); |
| 202 assertEquals(void 0, sum(...(function*() { })())); |
| 203 |
| 204 assertEquals("test", sum(..."test")); |
| 205 assertEquals(10, sum(...[1, 2, 3, 4])); |
| 206 assertEquals(10, sum(...[1, 2, 3], 4)); |
| 207 assertEquals(10, sum(1, ...[2, 3], 4)); |
| 208 assertEquals(10, sum(1, ...[2, 3], ...[4])); |
| 209 assertEquals(10, sum(1, 2, ...[3, 4])); |
| 210 assertEquals(10, sum(...new Set([1, 2, 3, 4]))); |
| 211 assertEquals(10, sum(...(function*() { |
| 212 yield 1; |
| 213 yield 2; |
| 214 yield 3; |
| 215 yield 4; |
| 216 })())); |
| 217 |
| 218 // nested spreads |
| 219 function makeArray() { |
| 220 var result = []; |
| 221 for (var i = 0; i < arguments.length; ++i) { |
| 222 result.push(arguments[i]); |
| 223 } |
| 224 return result; |
| 225 } |
| 226 assertEquals(10, sum(...makeArray(...[1, 2, 3, 4]))); |
| 227 assertEquals("test!!!", sum(...makeArray(..."test!!!"))); |
| 228 |
| 229 // Interleaved spread/unspread args |
| 230 assertEquals(36, sum(0, ...[1], 2, 3, ...[4, 5], 6, 7, 8)); |
| 231 assertEquals(45, sum(0, ...[1], 2, 3, ...[4, 5], 6, 7, 8, ...[9])); |
| 232 |
| 233 // Methods |
| 234 var O = { |
| 235 returnThis: returnThis, |
| 236 countArgs: countArgs, |
| 237 sum: sum, |
| 238 makeArray: makeArray, |
| 239 |
| 240 nested: { |
| 241 returnThis: returnThis, |
| 242 countArgs: countArgs, |
| 243 sum: sum, |
| 244 makeArray: makeArray |
| 245 } |
| 246 }; |
| 247 |
| 248 // Test this argument |
| 249 assertEquals(O, O.returnThis(..."test")); |
| 250 assertEquals(O, O["returnThis"](..."test")); |
| 251 assertEquals(O.nested, O.nested.returnThis(..."test")); |
| 252 assertEquals(O.nested, O.nested["returnThis"](..."test")); |
| 253 |
| 254 // Test argument counting with different iterables |
| 255 assertEquals(0, O.countArgs(..."")); |
| 256 assertEquals(4, O.countArgs(..."test")); |
| 257 assertEquals(4, O.countArgs(..."tes", ..."t")); |
| 258 assertEquals(4, O.countArgs("t", ..."es", "t")); |
| 259 assertEquals(4, O.countArgs("tes", ..."t!!")); |
| 260 |
| 261 assertEquals(1, O.countArgs(...[1])); |
| 262 assertEquals(2, O.countArgs(...[1, 2])); |
| 263 assertEquals(3, O.countArgs(...[1, 2, 3])); |
| 264 assertEquals(4, O.countArgs(...[1, 2, 3, 4])); |
| 265 assertEquals(5, O.countArgs(...[1, 2, 3, 4, 5])); |
| 266 assertEquals(6, O.countArgs(...[1, 2, 3, 4, 5, 6])); |
| 267 |
| 268 assertEquals(1, O.countArgs(...new Set([1]))); |
| 269 assertEquals(2, O.countArgs(...new Set([1, 2]))); |
| 270 assertEquals(3, O.countArgs(...new Set([1, 2, 3]))); |
| 271 assertEquals(4, O.countArgs(...new Set([1, 2, 3, 4]))); |
| 272 assertEquals(5, O.countArgs(...new Set([1, 2, 3, 4, 5]))); |
| 273 assertEquals(6, O.countArgs(...new Set([1, 2, 3, 4, 5, 6]))); |
| 274 |
| 275 assertEquals(3, O.countArgs(...(function*(){ |
| 276 yield 1; |
| 277 yield 2; |
| 278 yield 3; |
| 279 })())); |
| 280 |
| 281 // Test values |
| 282 assertEquals(void 0, O.sum(..."")); |
| 283 assertEquals(void 0, O.sum(...[])); |
| 284 assertEquals(void 0, O.sum(...new Set)); |
| 285 assertEquals(void 0, O.sum(...(function*() { })())); |
| 286 |
| 287 assertEquals("test", O.sum(..."test")); |
| 288 assertEquals(10, O.sum(...[1, 2, 3, 4])); |
| 289 assertEquals(10, O.sum(...[1, 2, 3], 4)); |
| 290 assertEquals(10, O.sum(1, ...[2, 3], 4)); |
| 291 assertEquals(10, O.sum(1, ...[2, 3], ...[4])); |
| 292 assertEquals(10, O.sum(1, 2, ...[3, 4])); |
| 293 assertEquals(10, O.sum(...new Set([1, 2, 3, 4]))); |
| 294 assertEquals(10, O.sum(...(function*() { |
| 295 yield 1; |
| 296 yield 2; |
| 297 yield 3; |
| 298 yield 4; |
| 299 })())); |
| 300 |
| 301 // nested spreads |
| 302 assertEquals(10, O.sum(...O.makeArray(...[1, 2, 3, 4]))); |
| 303 assertEquals("test!!!", O.sum(...O.makeArray(..."test!!!"))); |
| 304 |
| 305 // Interleaved spread/unspread args |
| 306 assertEquals(36, O.sum(0, ...[1], 2, 3, ...[4, 5], 6, 7, 8)); |
| 307 assertEquals(45, O.sum(0, ...[1], 2, 3, ...[4, 5], 6, 7, 8, ...[9])); |
| 308 })(); |
| 309 |
| 310 |
| 311 (function testSpreadEvaluationOrder() { |
| 312 "use strict"; |
| 313 var log = ""; |
| 314 function* gen() { log += "X"; yield 0; log += "Y"; } |
| 315 function a() { log += "A"; } |
| 316 function b() { log += "B"; return gen(); } |
| 317 function* c() { log += 'C1'; yield 1; log += 'C2'; } |
| 318 function d() { log += "D"; } |
| 319 function e() { log += "E"; } |
| 320 function fn() { |
| 321 var args = []; |
| 322 for (var i = 0; i < arguments.length; ++i) args.push(arguments[i]); |
| 323 return args; |
| 324 } |
| 325 |
| 326 var result = fn(a(), ...b(), d()); |
| 327 assertEquals([undefined, 0, undefined], result); |
| 328 assertEquals("ABXYD", log); |
| 329 |
| 330 log = ""; |
| 331 result = fn(...b(), d()); |
| 332 assertEquals([0, undefined], result); |
| 333 assertEquals("BXYD", log); |
| 334 |
| 335 log = ""; |
| 336 result = fn(a(), ...b()); |
| 337 assertEquals([undefined, 0], result); |
| 338 assertEquals("ABXY", log); |
| 339 |
| 340 log = ""; |
| 341 result = fn(a(), ...b(), ...c(), d(), e()); |
| 342 assertEquals([undefined, 0, 1, undefined, undefined], result); |
| 343 assertEquals("ABXYC1C2DE", log); |
| 344 |
| 345 log = ""; |
| 346 result = fn(a(), ...b(), ...c(), d(), e(), ...b(), ...c()); |
| 347 assertEquals([undefined, 0, 1, undefined, undefined, 0, 1], result); |
| 348 assertEquals("ABXYC1C2DEBXYC1C2", log); |
| 349 })(); |
| 350 |
| 351 |
| 352 (function testCustomArrayPrototypeIterator() { |
| 353 var origIterator = |
| 354 Object.getOwnPropertyDescriptor(Array.prototype, Symbol.iterator); |
| 355 Object.defineProperty(Array.prototype, Symbol.iterator, { |
| 356 value: function*() { |
| 357 yield 1; |
| 358 yield 2; |
| 359 yield 3; |
| 360 }, |
| 361 configurable: true |
| 362 }); |
| 363 function returnCountStrict() { 'use strict'; return arguments.length; } |
| 364 function returnCountSloppy() { return arguments.length; } |
| 365 |
| 366 assertEquals(3, returnCountStrict(...[1])); |
| 367 assertEquals(4, returnCountStrict(1, ...[2])); |
| 368 assertEquals(5, returnCountStrict(1, ...[2], 3)); |
| 369 assertEquals(3, returnCountSloppy(...[1])); |
| 370 assertEquals(4, returnCountSloppy(1, ...[2])); |
| 371 assertEquals(5, returnCountSloppy(1, ...[2], 3)); |
| 372 |
| 373 Object.defineProperty(Array.prototype, Symbol.iterator, origIterator); |
| 374 })(); |
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Chromium Code Reviews
Issue 938443002:
[es6] implement spread calls (Closed)
Base URL: https://chromium.googlesource.com/v8/v8.git@master