1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
|
// |reftest| skip -- regexp-duplicate-named-groups is not supported
// Copyright 2022 Igalia, S.L. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
description: Properties on groups object with duplicate named capture groups
esid: prod-GroupSpecifier
features: [regexp-duplicate-named-groups]
includes: [compareArray.js]
---*/
const matcher = /(?:(?<x>a)|(?<y>a)(?<x>b))(?:(?<z>c)|(?<z>d))/;
const threeMatchResult = "abc".match(matcher);
assert.sameValue(threeMatchResult.groups.x, "b", "group x matches b");
assert.sameValue(threeMatchResult.groups.y, "a", "group y matches a");
assert.sameValue(threeMatchResult.groups.z, "c", "group z matches c");
assert.compareArray(
Object.keys(threeMatchResult.groups),
["x", "y", "z"],
"Properties of groups are ordered in RegExp source order despite y matching before x in this alternative"
);
const twoMatchResult = "ad".match(matcher);
assert.sameValue(twoMatchResult.groups.x, "a", "group x matches a");
assert.sameValue(twoMatchResult.groups.y, undefined, "group y does not match");
assert.sameValue(twoMatchResult.groups.z, "d", "group z matches d");
assert.compareArray(
Object.keys(twoMatchResult.groups),
["x", "y", "z"],
"y is still present on groups object, in the right order, despite not matching"
);
const iteratedMatcher = /(?:(?:(?<x>a)|(?<x>b)|c)\k<x>){2}/;
const matchedInPrevIterationResult = "aac".match(iteratedMatcher);
assert.sameValue(matchedInPrevIterationResult.groups.x, undefined, "group x does not match in the last iteration");
reportCompare(0, 0);
|
