mirror of
https://github.com/tc39/test262.git
synced 2025-11-04 05:33:50 +01:00
30 lines
1010 B
JavaScript
30 lines
1010 B
JavaScript
// Copyright 2017 the V8 project authors. All rights reserved.
|
|
// This code is governed by the BSD license found in the LICENSE file.
|
|
|
|
/*---
|
|
description: Named groups may be accessed in their replacement string by number
|
|
esid: sec-getsubstitution
|
|
features: [regexp-named-groups]
|
|
info: |
|
|
Runtime Semantics: GetSubstitution( matched, str, position, captures, namedCaptures, replacement )
|
|
|
|
Table: Replacement Text Symbol Substitutions
|
|
|
|
Unicode Characters: $n
|
|
Replacement text:
|
|
The nth element of captures, where n is a single digit in the range 1 to 9. If
|
|
n≤m and the nth element of captures is undefined, use the empty String instead.
|
|
If n>m, the result is implementation-defined.
|
|
---*/
|
|
|
|
let source = "(?<fst>.)(?<snd>.)|(?<thd>x)";
|
|
for (let flags of ["g", "gu"]) {
|
|
let re = new RegExp(source, flags);
|
|
assert.sameValue("badc", "abcd".replace(re, "$2$1"));
|
|
}
|
|
for (let flags of ["", "u"]) {
|
|
let re = new RegExp(source, flags);
|
|
assert.sameValue("bacd", "abcd".replace(re, "$2$1"));
|
|
}
|
|
|