47 lines
1.4 KiB
C++
47 lines
1.4 KiB
C++
// Copyright 2015 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef V8_UNICODE_CACHE_H_
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#define V8_UNICODE_CACHE_H_
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#include "src/base/macros.h"
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#include "src/char-predicates.h"
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#include "src/unicode.h"
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#include "src/unicode-decoder.h"
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namespace v8 {
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namespace internal {
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// Caching predicates used by scanners.
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class UnicodeCache {
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public:
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UnicodeCache() {}
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typedef unibrow::Utf8Decoder<512> Utf8Decoder;
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StaticResource<Utf8Decoder>* utf8_decoder() { return &utf8_decoder_; }
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inline bool IsIdentifierStart(unibrow::uchar c);
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inline bool IsIdentifierPart(unibrow::uchar c);
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inline bool IsLineTerminator(unibrow::uchar c);
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inline bool IsLineTerminatorSequence(unibrow::uchar c, unibrow::uchar next);
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inline bool IsWhiteSpace(unibrow::uchar c);
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inline bool IsWhiteSpaceOrLineTerminator(unibrow::uchar c);
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private:
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unibrow::Predicate<IdentifierStart, 128> kIsIdentifierStart;
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unibrow::Predicate<IdentifierPart, 128> kIsIdentifierPart;
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unibrow::Predicate<unibrow::LineTerminator, 128> kIsLineTerminator;
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unibrow::Predicate<WhiteSpace, 128> kIsWhiteSpace;
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unibrow::Predicate<WhiteSpaceOrLineTerminator, 128>
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kIsWhiteSpaceOrLineTerminator;
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StaticResource<Utf8Decoder> utf8_decoder_;
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DISALLOW_COPY_AND_ASSIGN(UnicodeCache);
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};
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} // namespace internal
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} // namespace v8
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#endif // V8_UNICODE_CACHE_H_
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