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1 // Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file |
2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
4 | 4 |
5 library characters; | 5 #library("characters"); |
6 | 6 |
7 const int $EOF = 0; | 7 const int $EOF = 0; |
8 const int $STX = 2; | 8 const int $STX = 2; |
9 const int $BS = 8; | 9 const int $BS = 8; |
10 const int $TAB = 9; | 10 const int $TAB = 9; |
11 const int $LF = 10; | 11 const int $LF = 10; |
12 const int $VTAB = 11; | 12 const int $VTAB = 11; |
13 const int $FF = 12; | 13 const int $FF = 12; |
14 const int $CR = 13; | 14 const int $CR = 13; |
15 const int $SPACE = 32; | 15 const int $SPACE = 32; |
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126 assert(isHexDigit(hexDigit)); | 126 assert(isHexDigit(hexDigit)); |
127 // hexDigit is one of '0'..'9', 'A'..'F' and 'a'..'f'. | 127 // hexDigit is one of '0'..'9', 'A'..'F' and 'a'..'f'. |
128 if (hexDigit <= $9) return hexDigit - $0; | 128 if (hexDigit <= $9) return hexDigit - $0; |
129 return (hexDigit | ($a ^ $A)) - ($a - 10); | 129 return (hexDigit | ($a ^ $A)) - ($a - 10); |
130 } | 130 } |
131 | 131 |
132 bool isUnicodeScalarValue(int value) { | 132 bool isUnicodeScalarValue(int value) { |
133 return value < $FIRST_SURROGATE || | 133 return value < $FIRST_SURROGATE || |
134 (value > $LAST_SURROGATE && value <= $LAST_CODE_POINT); | 134 (value > $LAST_SURROGATE && value <= $LAST_CODE_POINT); |
135 } | 135 } |
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