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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 // Scanner class for the Dart language. The scanner reads source text | 5 // Scanner class for the Dart language. The scanner reads source text |
| 6 // and produces a stream of tokens which is used by the parser. | 6 // and produces a stream of tokens which is used by the parser. |
| 7 // | 7 // |
| 8 | 8 |
| 9 #ifndef VM_SCANNER_H_ | 9 #ifndef VM_SCANNER_H_ |
| 10 #define VM_SCANNER_H_ | 10 #define VM_SCANNER_H_ |
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| 180 // Reads a fixed number of hexadecimal digits. | 180 // Reads a fixed number of hexadecimal digits. |
| 181 bool ScanHexDigits(int digits, int32_t* value); | 181 bool ScanHexDigits(int digits, int32_t* value); |
| 182 | 182 |
| 183 // Reads a variable number of hexadecimal digits. | 183 // Reads a variable number of hexadecimal digits. |
| 184 bool ScanHexDigits(int min_digits, int max_digits, int32_t* value); | 184 bool ScanHexDigits(int min_digits, int max_digits, int32_t* value); |
| 185 | 185 |
| 186 // Reads an escaped code point from within a string literal. | 186 // Reads an escaped code point from within a string literal. |
| 187 void ScanEscapedCodePoint(int32_t* escaped_char); | 187 void ScanEscapedCodePoint(int32_t* escaped_char); |
| 188 | 188 |
| 189 // Reads identifier. | 189 // Reads identifier. |
| 190 RawString* ConsumeIdentChars(bool allow_dollar); | |
| 191 void ScanIdentChars(bool allow_dollar); | 190 void ScanIdentChars(bool allow_dollar); |
| 192 void ScanIdent() { | 191 void ScanIdent() { |
| 193 ScanIdentChars(true); | 192 ScanIdentChars(true); |
| 194 } | 193 } |
| 195 void ScanIdentNoDollar() { | 194 void ScanIdentNoDollar() { |
| 196 ScanIdentChars(false); | 195 ScanIdentChars(false); |
| 197 } | 196 } |
| 198 | 197 |
| 199 // Reads a number literal. | 198 // Reads a number literal. |
| 200 void ScanNumber(bool dec_point_seen); | 199 void ScanNumber(bool dec_point_seen); |
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| 223 | 222 |
| 224 SourcePosition c0_pos_; // Source position of lookahead character c0_. | 223 SourcePosition c0_pos_; // Source position of lookahead character c0_. |
| 225 KeywordTable keywords_[Token::numKeywords]; | 224 KeywordTable keywords_[Token::numKeywords]; |
| 226 Array& keyword_symbol_table_; // Access to keyword symbols in object store. | 225 Array& keyword_symbol_table_; // Access to keyword symbols in object store. |
| 227 }; | 226 }; |
| 228 | 227 |
| 229 | 228 |
| 230 } // namespace dart | 229 } // namespace dart |
| 231 | 230 |
| 232 #endif // VM_SCANNER_H_ | 231 #endif // VM_SCANNER_H_ |
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