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1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file | |
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. | |
4 | |
5 library utf.constants; | |
6 | |
7 /** | |
8 * Invalid codepoints or encodings may be substituted with the value U+fffd. | |
9 */ | |
10 const int UNICODE_REPLACEMENT_CHARACTER_CODEPOINT = 0xfffd; | |
11 const int UNICODE_BOM = 0xfeff; | |
12 const int UNICODE_UTF_BOM_LO = 0xff; | |
13 const int UNICODE_UTF_BOM_HI = 0xfe; | |
14 | |
15 const int UNICODE_BYTE_ZERO_MASK = 0xff; | |
16 const int UNICODE_BYTE_ONE_MASK = 0xff00; | |
17 const int UNICODE_VALID_RANGE_MAX = 0x10ffff; | |
18 const int UNICODE_PLANE_ONE_MAX = 0xffff; | |
19 const int UNICODE_UTF16_RESERVED_LO = 0xd800; | |
20 const int UNICODE_UTF16_RESERVED_HI = 0xdfff; | |
21 const int UNICODE_UTF16_OFFSET = 0x10000; | |
22 const int UNICODE_UTF16_SURROGATE_UNIT_0_BASE = 0xd800; | |
23 const int UNICODE_UTF16_SURROGATE_UNIT_1_BASE = 0xdc00; | |
24 const int UNICODE_UTF16_HI_MASK = 0xffc00; | |
25 const int UNICODE_UTF16_LO_MASK = 0x3ff; | |
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