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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 /** | 5 /** |
6 * An abstract string representation. | 6 * An abstract string representation. |
7 */ | 7 */ |
8 class ByteString implements SourceString { | 8 class ByteString implements SourceString { |
9 final List<int> bytes; | 9 final List<int> bytes; |
10 final int offset; | 10 final int offset; |
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82 | 82 |
83 | 83 |
84 class AsciiStringIterator implements Iterator<int> { | 84 class AsciiStringIterator implements Iterator<int> { |
85 final List<int> bytes; | 85 final List<int> bytes; |
86 int offset; | 86 int offset; |
87 final int end; | 87 final int end; |
88 AsciiStringIterator(List<int> bytes) | 88 AsciiStringIterator(List<int> bytes) |
89 : this.bytes = bytes, offset = 0, end = bytes.length; | 89 : this.bytes = bytes, offset = 0, end = bytes.length; |
90 AsciiStringIterator.range(List<int> bytes, int from, int length) | 90 AsciiStringIterator.range(List<int> bytes, int from, int length) |
91 : this.bytes = bytes, offset = from, end = from + length; | 91 : this.bytes = bytes, offset = from, end = from + length; |
92 bool hasNext() => offset < end; | 92 bool get hasNext => offset < end; |
93 int next() => bytes[offset++]; | 93 int next() => bytes[offset++]; |
94 } | 94 } |
95 | 95 |
96 | 96 |
97 /** | 97 /** |
98 * A string that consists of characters that can be encoded as UTF-8. | 98 * A string that consists of characters that can be encoded as UTF-8. |
99 */ | 99 */ |
100 class Utf8String extends ByteString { | 100 class Utf8String extends ByteString { |
101 final String charset = "UTF8"; | 101 final String charset = "UTF8"; |
102 | 102 |
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135 * A ByteString-valued token. | 135 * A ByteString-valued token. |
136 */ | 136 */ |
137 class ByteStringToken extends Token { | 137 class ByteStringToken extends Token { |
138 final ByteString value; | 138 final ByteString value; |
139 | 139 |
140 ByteStringToken(PrecedenceInfo info, ByteString this.value, int charOffset) | 140 ByteStringToken(PrecedenceInfo info, ByteString this.value, int charOffset) |
141 : super(info, charOffset); | 141 : super(info, charOffset); |
142 | 142 |
143 String toString() => value.toString(); | 143 String toString() => value.toString(); |
144 } | 144 } |
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