| // Copyright (C) 2018 Peter Wong. All rights reserved. |
| // This code is governed by the BSD license found in the LICENSE file. |
| /*--- |
| esid: pending |
| description: Verify regexp's lastIndex is cached |
| info: | |
| RegExp.prototype [ @@matchAll ] ( string ) |
| [...] |
| 3. Return ? MatchAllIterator(R, string). |
| |
| MatchAllIterator ( R, O ) |
| [...] |
| 2. If ? IsRegExp(R) is true, then |
| [...] |
| f. Let lastIndex be ? ToLength(? Get(R, "lastIndex")). |
| g. Perform ? Set(matcher, "lastIndex", lastIndex, true). |
| features: [Symbol.matchAll] |
| includes: [compareArray.js, compareIterator.js, regExpUtils.js] |
| ---*/ |
| |
| var regexp = /./g; |
| regexp.lastIndex = { |
| valueOf() { |
| return 2; |
| } |
| }; |
| var str = 'abcd'; |
| var iter = regexp[Symbol.matchAll](str); |
| |
| // Verify lastIndex is cached at the time of calling @@matchAll |
| regexp.lastIndex = 0; |
| |
| assert.compareIterator(iter, [ |
| matchValidator(['c'], 2, str), |
| matchValidator(['d'], 3, str) |
| ]); |