u-astral-char-class-invert.js (1122B)
1 // Copyright (C) 2020 Alexey Shvayka. All rights reserved. 2 // This code is governed by the BSD license found in the LICENSE file. 3 4 /*--- 5 esid: sec-atom 6 description: > 7 Literal astral symbols within inverted CharacterClass. 8 info: | 9 The production Atom :: CharacterClass evaluates as follows: 10 11 1. Evaluate CharacterClass to obtain a CharSet A and a Boolean invert. 12 2. Call CharacterSetMatcher(A, invert, direction) and return its Matcher result. 13 14 Runtime Semantics: CharacterSetMatcher ( A, invert, direction ) 15 16 1. Return an internal Matcher closure that takes two arguments, a State x and 17 a Continuation c, and performs the following steps: 18 [...] 19 f. Let cc be Canonicalize(ch). 20 g. If invert is false, then 21 [...] 22 h. Else, 23 i. Assert: invert is true. 24 ii. If there exists a member a of set A such that Canonicalize(a) is cc, 25 return failure. 26 ---*/ 27 28 assert.sameValue(/^[^❤️]$/u.exec("❤️"), null); 29 assert.sameValue(/^[^🧡]/u.exec("🧡"), null); 30 assert.sameValue(/[^💛]$/u.exec("💛"), null); 31 assert.sameValue(/[^💚]/u.exec("💚"), null); 32 33 reportCompare(0, 0);