tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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legacy-octal-escape.js (2836B)

      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 description: Legacy Octal Escape Sequence
      6 info: |
      7    CharacterEscape[U] ::
      8        ControlEscape
      9        c ControlLetter
     10        0 [lookahead ∉ DecimalDigit]
     11        HexEscapeSequence
     12        RegExpUnicodeEscapeSequence[?U]
     13        [~U] LegacyOctalEscapeSequence
     14        IdentityEscape[?U]
     15 
     16    LegacyOctalEscapeSequence ::
     17        OctalDigit [lookahead ∉ OctalDigit]
     18        ZeroToThree OctalDigit [lookahead ∉ OctalDigit]
     19        FourToSeven OctalDigit
     20        ZeroToThree OctalDigit OctalDigit
     21 
     22    The production CharacterEscape :: LegacyOctalEscapeSequence evaluates by
     23    evaluating the SV of the LegacyOctalEscapeSequence and returning its
     24    character result.
     25 ---*/
     26 
     27 assert.sameValue(/\1/.exec('\x01')[0], '\x01', '\\1');
     28 assert.sameValue(/\2/.exec('\x02')[0], '\x02', '\\2');
     29 assert.sameValue(/\3/.exec('\x03')[0], '\x03', '\\3');
     30 assert.sameValue(/\4/.exec('\x04')[0], '\x04', '\\4');
     31 assert.sameValue(/\5/.exec('\x05')[0], '\x05', '\\5');
     32 assert.sameValue(/\6/.exec('\x06')[0], '\x06', '\\6');
     33 assert.sameValue(/\7/.exec('\x07')[0], '\x07', '\\7');
     34 
     35 assert.sameValue(/\00/.exec('\x00')[0], '\x00', '\\00');
     36 assert.sameValue(/\07/.exec('\x07')[0], '\x07', '\\07');
     37 
     38 assert.sameValue(/\30/.exec('\x18')[0], '\x18', '\\30');
     39 assert.sameValue(/\37/.exec('\x1f')[0], '\x1f', '\\37');
     40 
     41 assert.sameValue(/\40/.exec('\x20')[0], '\x20', '\\40');
     42 assert.sameValue(/\47/.exec('\x27')[0], '\x27', '\\47');
     43 
     44 assert.sameValue(/\70/.exec('\x38')[0], '\x38', '\\70');
     45 assert.sameValue(/\77/.exec('\x3f')[0], '\x3f', '\\77');
     46 
     47 // Sequence is bounded according to the String Value
     48 assert.sameValue(/\400/.exec('\x200')[0], '\x200', '\\400');
     49 assert.sameValue(/\470/.exec('\x270')[0], '\x270', '\\470');
     50 assert.sameValue(/\700/.exec('\x380')[0], '\x380', '\\700');
     51 assert.sameValue(/\770/.exec('\x3f0')[0], '\x3f0', '\\770');
     52 
     53 assert.sameValue(/\000/.exec('\x00')[0], '\x00', '\\000');
     54 assert.sameValue(/\007/.exec('\x07')[0], '\x07', '\\007');
     55 assert.sameValue(/\070/.exec('\x38')[0], '\x38', '\\070');
     56 
     57 assert.sameValue(/\300/.exec('\xc0')[0], '\xc0', '\\300');
     58 assert.sameValue(/\307/.exec('\xc7')[0], '\xc7', '\\307');
     59 assert.sameValue(/\370/.exec('\xf8')[0], '\xf8', '\\370');
     60 assert.sameValue(/\377/.exec('\xff')[0], '\xff', '\\377');
     61 
     62 // Sequence is 3 characters max, including leading zeros
     63 assert.sameValue(/\0111/.exec('\x091')[0], '\x091', '\\0111');
     64 assert.sameValue(/\0022/.exec('\x022')[0], '\x022', '\\0022');
     65 assert.sameValue(/\0003/.exec('\x003')[0], '\x003', '\\0003');
     66 
     67 var match = /(.)\1/.exec('a\x01 aa');
     68 assert.sameValue(
     69  match[0], 'aa', 'DecimalEscape takes precedence over LegacyOctalEscapeSequence'
     70 );
     71 
     72 reportCompare(0, 0);