Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1 | // Copyright 2015 the V8 project authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | #ifndef V8_UNICODE_CACHE_H_ |
| 6 | #define V8_UNICODE_CACHE_H_ |
| 7 | |
| 8 | #include "src/base/macros.h" |
| 9 | #include "src/char-predicates.h" |
| 10 | #include "src/unicode.h" |
| 11 | #include "src/unicode-decoder.h" |
| 12 | |
| 13 | namespace v8 { |
| 14 | namespace internal { |
| 15 | |
| 16 | // Caching predicates used by scanners. |
| 17 | class UnicodeCache { |
| 18 | public: |
| 19 | UnicodeCache() {} |
| 20 | typedef unibrow::Utf8Decoder<512> Utf8Decoder; |
| 21 | |
| 22 | StaticResource<Utf8Decoder>* utf8_decoder() { return &utf8_decoder_; } |
| 23 | |
| 24 | inline bool IsIdentifierStart(unibrow::uchar c); |
| 25 | inline bool IsIdentifierPart(unibrow::uchar c); |
| 26 | inline bool IsLineTerminator(unibrow::uchar c); |
| 27 | inline bool IsLineTerminatorSequence(unibrow::uchar c, unibrow::uchar next); |
| 28 | |
| 29 | inline bool IsWhiteSpace(unibrow::uchar c); |
| 30 | inline bool IsWhiteSpaceOrLineTerminator(unibrow::uchar c); |
| 31 | |
| 32 | private: |
| 33 | unibrow::Predicate<IdentifierStart, 128> kIsIdentifierStart; |
| 34 | unibrow::Predicate<IdentifierPart, 128> kIsIdentifierPart; |
| 35 | unibrow::Predicate<unibrow::LineTerminator, 128> kIsLineTerminator; |
| 36 | unibrow::Predicate<WhiteSpace, 128> kIsWhiteSpace; |
| 37 | unibrow::Predicate<WhiteSpaceOrLineTerminator, 128> |
| 38 | kIsWhiteSpaceOrLineTerminator; |
| 39 | StaticResource<Utf8Decoder> utf8_decoder_; |
| 40 | |
| 41 | DISALLOW_COPY_AND_ASSIGN(UnicodeCache); |
| 42 | }; |
| 43 | |
| 44 | } // namespace internal |
| 45 | } // namespace v8 |
| 46 | |
| 47 | #endif // V8_UNICODE_CACHE_H_ |