| // Copyright (C) 2020 Alexey Shvayka. All rights reserved. |
| // This code is governed by the BSD license found in the LICENSE file. |
| |
| /*--- |
| esid: sec-atom |
| description: > |
| Literal astral symbols within inverted CharacterClass. |
| info: | |
| The production Atom :: CharacterClass evaluates as follows: |
| |
| 1. Evaluate CharacterClass to obtain a CharSet A and a Boolean invert. |
| 2. Call CharacterSetMatcher(A, invert, direction) and return its Matcher result. |
| |
| Runtime Semantics: CharacterSetMatcher ( A, invert, direction ) |
| |
| 1. Return an internal Matcher closure that takes two arguments, a State x and |
| a Continuation c, and performs the following steps: |
| [...] |
| f. Let cc be Canonicalize(ch). |
| g. If invert is false, then |
| [...] |
| h. Else, |
| i. Assert: invert is true. |
| ii. If there exists a member a of set A such that Canonicalize(a) is cc, |
| return failure. |
| ---*/ |
| |
| assert.sameValue(/^[^❤️]$/u.exec("❤️"), null); |
| assert.sameValue(/^[^🧡]/u.exec("🧡"), null); |
| assert.sameValue(/[^💛]$/u.exec("💛"), null); |
| assert.sameValue(/[^💚]/u.exec("💚"), null); |
