mirror of https://github.com/tc39/test262.git
33 lines
1.1 KiB
JavaScript
33 lines
1.1 KiB
JavaScript
// Copyright 2019 Ron Buckton. All rights reserved.
|
|
// This code is governed by the BSD license found in the LICENSE file.
|
|
|
|
/*---
|
|
description: An unmatched capture in a match corresponds to an unmatched capture in "indices"
|
|
esid: sec-makeindicesarray
|
|
features: [regexp-match-indices]
|
|
info: |
|
|
MakeIndicesArray ( S, indices, groupNames )
|
|
4. Let _n_ be the number of elements in _indices_.
|
|
...
|
|
6. Set _A_ to ! ArrayCreate(_n_).
|
|
...
|
|
11. For each integer _i_ such that _i_ >= 0 and _i_ < _n_, do
|
|
a. Let _matchIndices_ be _indices_[_i_].
|
|
b. If _matchIndices_ is not *undefined*, then
|
|
i. Let _matchIndicesArray_ be ! GetMatchIndicesArray(_S_, _matchIndices_).
|
|
c. Else,
|
|
i. Let _matchIndicesArray_ be *undefined*.
|
|
d. Perform ! CreateDataProperty(_A_, ! ToString(_n_), _matchIndicesArray_).
|
|
...
|
|
---*/
|
|
|
|
let input = "abd";
|
|
let match = /b(c)?/d.exec(input);
|
|
let indices = match.indices;
|
|
|
|
// `indices` has the same length as match
|
|
assert.sameValue(indices.length, match.length);
|
|
|
|
// The second element of `indices` should be undefined.
|
|
assert.sameValue(indices[1], undefined);
|