unibrow::Utf16 Class Reference

#include <unicode.h>

Collaboration diagram for unibrow::Utf16:

Static Public Member Functions
static bool	IsSurrogatePair (int lead, int trail)
static bool	IsLeadSurrogate (int code)
static bool	IsTrailSurrogate (int code)
static int	CombineSurrogatePair (uchar lead, uchar trail)
static uint16_t	LeadSurrogate (uint32_t char_code)
static uint16_t	TrailSurrogate (uint32_t char_code)

Static Public Attributes
static const int	kNoPreviousCharacter = -1
static const uchar	kMaxNonSurrogateCharCode = 0xffff
static const int	kMaxExtraUtf8BytesForOneUtf16CodeUnit = 3
static const int	kUtf8BytesToCodeASurrogate = 3

Detailed Description

Definition at line 80 of file unicode.h.

Member Function Documentation

CombineSurrogatePair()

static int unibrow::Utf16::CombineSurrogatePair ( uchar  lead, uchar  trail  )

inlinestatic

Definition at line 94 of file unicode.h.

                                                                  {
    return 0x10000 + ((lead & 0x3ff) << 10) + (trail & 0x3ff);
  }

Referenced by unibrow::Utf8::Encode().

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IsLeadSurrogate()

static bool unibrow::Utf16::IsLeadSurrogate ( int  code )

inlinestatic

Definition at line 85 of file unicode.h.

                                               {
    if (code == kNoPreviousCharacter) return false;
    return (code & 0xfc00) == 0xd800;
  }

References kNoPreviousCharacter.

Referenced by unibrow::Utf8::Encode(), IsSurrogatePair(), unibrow::Utf8::Length(), and v8::Utf8LengthHelper::Visitor::VisitTwoByteString().

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IsSurrogatePair()

static bool unibrow::Utf16::IsSurrogatePair ( int  lead, int  trail  )

inlinestatic

Definition at line 82 of file unicode.h.

                                                          {
    return IsLeadSurrogate(lead) && IsTrailSurrogate(trail);
  }

References IsLeadSurrogate(), and IsTrailSurrogate().

Referenced by unibrow::Utf8::Encode().

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IsTrailSurrogate()

static bool unibrow::Utf16::IsTrailSurrogate ( int  code )

inlinestatic

Definition at line 89 of file unicode.h.

                                                {
    if (code == kNoPreviousCharacter) return false;
    return (code & 0xfc00) == 0xdc00;
  }

References kNoPreviousCharacter.

Referenced by unibrow::Utf8::Encode(), IsSurrogatePair(), unibrow::Utf8::Length(), and v8::Utf8LengthHelper::Visitor::VisitTwoByteString().

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LeadSurrogate()

static uint16_t unibrow::Utf16::LeadSurrogate ( uint32_t  char_code )

inlinestatic

Definition at line 108 of file unicode.h.

                                                           {
    return 0xd800 + (((char_code - 0x10000) >> 10) & 0x3ff);
  }

Referenced by v8::internal::StringHasher::ComputeUtf8Hash(), v8::internal::Utf8ToUtf16CharacterStream::CopyChars(), v8::internal::String::IsUtf8EqualTo(), unibrow::Utf8DecoderBase::Reset(), v8::internal::WriteTwoByteData(), and unibrow::Utf8DecoderBase::WriteUtf16Slow().

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TrailSurrogate()

static uint16_t unibrow::Utf16::TrailSurrogate ( uint32_t  char_code )

inlinestatic

Definition at line 111 of file unicode.h.

                                                            {
    return 0xdc00 + (char_code & 0x3ff);
  }

Referenced by v8::internal::StringHasher::ComputeUtf8Hash(), v8::internal::Utf8ToUtf16CharacterStream::CopyChars(), v8::internal::String::IsUtf8EqualTo(), unibrow::Utf8DecoderBase::Reset(), v8::internal::WriteTwoByteData(), and unibrow::Utf8DecoderBase::WriteUtf16Slow().

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Member Data Documentation

kMaxExtraUtf8BytesForOneUtf16CodeUnit

const int unibrow::Utf16::kMaxExtraUtf8BytesForOneUtf16CodeUnit = 3

static

Definition at line 104 of file unicode.h.

kMaxNonSurrogateCharCode

const uchar unibrow::Utf16::kMaxNonSurrogateCharCode = 0xffff

static

Definition at line 98 of file unicode.h.

Referenced by v8::internal::StringHasher::ComputeUtf8Hash(), v8::internal::String::IsUtf8EqualTo(), unibrow::Utf8DecoderBase::Reset(), v8::internal::WriteTwoByteData(), and unibrow::Utf8DecoderBase::WriteUtf16Slow().

kNoPreviousCharacter

const int unibrow::Utf16::kNoPreviousCharacter = -1

static

Definition at line 97 of file unicode.h.

Referenced by v8::internal::CodeEventLogger::NameBuffer::AppendString(), unibrow::Utf8::Encode(), IsLeadSurrogate(), IsTrailSurrogate(), v8::internal::String::ToCString(), and v8::Utf8LengthHelper::Visitor::VisitTwoByteString().

kUtf8BytesToCodeASurrogate

const int unibrow::Utf16::kUtf8BytesToCodeASurrogate = 3

static

Definition at line 107 of file unicode.h.

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The documentation for this class was generated from the following file:

• /mnt/V8SourceCode/src/unicode.h