Line data    Source code

       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      292460 :   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_