tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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string-binary-literal.js (2112B)

      1 // Copyright (C) 2015 the V8 project authors. All rights reserved.
      2 // This code is governed by the BSD license found in the LICENSE file.
      3 
      4 /*---
      5 es6id: 20.1.1.1
      6 description: Mathematical value of valid binary integer literals
      7 info: |
      8    20.1.1.1 Number ( [ value ] )
      9 
     10    When Number is called with argument number, the following steps are taken:
     11 
     12    1. If no arguments were passed to this function invocation, let n be +0.
     13    2. Else, let n be ToNumber(value).
     14 
     15    [...]
     16 
     17    7.1.3.1 ToNumber Applied to the String Type
     18 
     19    All grammar symbols not explicitly defined above have the definitions used
     20    in the Lexical Grammar for numeric literals (11.8.3)
     21 
     22    [...]
     23 
     24    The MV of BinaryIntegerLiteral :: 0b BinaryDigits is the MV of
     25    BinaryDigits.
     26    The MV of BinaryIntegerLiteral :: 0B BinaryDigits is the MV of
     27    BinaryDigits.
     28    The MV of BinaryDigits :: BinaryDigit is the MV of BinaryDigit.
     29    The MV of BinaryDigits :: BinaryDigits BinaryDigit is (the MV of
     30    BinaryDigits × 2) plus the MV of BinaryDigit.
     31 ---*/
     32 
     33 assert.sameValue(Number('0b0'), 0, 'lower-case head');
     34 assert.sameValue(Number('0B0'), 0, 'upper-case head');
     35 assert.sameValue(Number('0b00'), 0, 'lower-case head with leading zeros');
     36 assert.sameValue(Number('0B00'), 0, 'upper-case head with leading zeros');
     37 
     38 assert.sameValue(Number('0b1'), 1, 'lower-case head');
     39 assert.sameValue(Number('0B1'), 1, 'upper-case head');
     40 assert.sameValue(Number('0b01'), 1, 'lower-case head with leading zeros');
     41 assert.sameValue(Number('0B01'), 1, 'upper-case head with leading zeros');
     42 
     43 assert.sameValue(Number('0b10'), 2, 'lower-case head');
     44 assert.sameValue(Number('0B10'), 2, 'upper-case head');
     45 assert.sameValue(Number('0b010'), 2, 'lower-case head with leading zeros');
     46 assert.sameValue(Number('0B010'), 2, 'upper-case head with leading zeros');
     47 
     48 assert.sameValue(Number('0b11'), 3, 'lower-case head');
     49 assert.sameValue(Number('0B11'), 3, 'upper-case head');
     50 assert.sameValue(Number('0b011'), 3, 'lower-case head with leading zeros');
     51 assert.sameValue(Number('0B011'), 3, 'upper-case head with leading zeros');
     52 
     53 reportCompare(0, 0);