class-escape.js (2303B)
1 // Copyright (C) 2016 the V8 project authors. All rights reserved. 2 // This code is governed by the BSD license found in the LICENSE file. 3 /*--- 4 esid: sec-regular-expressions-patterns 5 es6id: B.1.4 6 description: Extensions to ClassEscape 7 info: | 8 ClassEscape[U] :: 9 b 10 [+U] - 11 [~U] c ClassControlLetter 12 CharacterClassEscape 13 CharacterEscape[?U] 14 15 ClassControlLetter :: 16 DecimalDigit 17 _ 18 19 The production ClassEscape :: c ClassControlLetter evaluates as follows: 20 21 1. Let ch be the character matched by ClassControlLetter. 22 2. Let i be ch's character value. 23 3. Let j be the remainder of dividing i by 32. 24 4. Let d be the character whose character value is j. 25 5. Return the CharSet containing the single character d. 26 ---*/ 27 28 var match; 29 30 match = /\c0/.exec('\x0f\x10\x11'); 31 assert.sameValue(match, null, '\\c0 outside of CharacterClass'); 32 33 match = /[\c0]/.exec('\x0f\x10\x11'); 34 assert.sameValue(match[0], '\x10', '\\c0 within CharacterClass'); 35 36 match = /[\c00]+/.exec('\x0f0\x10\x11'); 37 assert.sameValue(match[0], '0\x10', '\\c00 within CharacterClass'); 38 39 match = /\c1/.exec('\x10\x11\x12'); 40 assert.sameValue(match, null, '\\c1 outside of CharacterClass'); 41 42 match = /[\c1]/.exec('\x10\x11\x12'); 43 assert.sameValue(match[0], '\x11', '\\c1 within CharacterClass'); 44 45 match = /[\c10]+/.exec('\x100\x11\x12'); 46 assert.sameValue(match[0], '0\x11', '\\c10 within CharacterClass'); 47 48 match = /\c8/.exec('\x17\x18\x19'); 49 assert.sameValue(match, null, '\\c8 outside of CharacterClass'); 50 51 match = /[\c8]/.exec('\x17\x18\x19'); 52 assert.sameValue(match[0], '\x18', '\\c8 within CharacterClass'); 53 54 match = /[\c80]+/.exec('\x170\x18\x19'); 55 assert.sameValue(match[0], '0\x18', '\\c80 within CharacterClass'); 56 57 match = /\c9/.exec('\x18\x19\x1a'); 58 assert.sameValue(match, null, '\\c9 outside of CharacterClass'); 59 60 match = /[\c9]/.exec('\x18\x19\x1a'); 61 assert.sameValue(match[0], '\x19', '\\c9 within CharacterClass'); 62 63 match = /[\c90]+/.exec('\x180\x19\x1a'); 64 assert.sameValue(match[0], '0\x19', '\\c90 within CharacterClass'); 65 66 match = /\c_/.exec('\x1e\x1f\x20'); 67 assert.sameValue(match, null, '\\c_ outside of CharacterClass'); 68 69 match = /[\c_]/.exec('\x1e\x1f\x20'); 70 assert.sameValue(match[0], '\x1f', '\\c_ within CharacterClass'); 71 72 reportCompare(0, 0);