#include <scanner-character-streams.h>

Inheritance diagram for v8::internal::GenericStringUtf16CharacterStream:

Collaboration diagram for v8::internal::GenericStringUtf16CharacterStream:

Public Member Functions
	GenericStringUtf16CharacterStream (Handle< String > data, unsigned start_position, unsigned end_position)

virtual	~GenericStringUtf16CharacterStream ()

Public Member Functions inherited from v8::internal::BufferedUtf16CharacterStream
	BufferedUtf16CharacterStream ()

virtual	~BufferedUtf16CharacterStream ()

virtual void	PushBack (uc32 character)

Public Member Functions inherited from v8::internal::Utf16CharacterStream
	Utf16CharacterStream ()

virtual	~Utf16CharacterStream ()

uc32	Advance ()

unsigned	pos () const

unsigned	SeekForward (unsigned code_unit_count)

Protected Member Functions
virtual unsigned	BufferSeekForward (unsigned delta)

virtual unsigned	FillBuffer (unsigned position)

Protected Member Functions inherited from v8::internal::BufferedUtf16CharacterStream
virtual unsigned	SlowSeekForward (unsigned delta)

virtual bool	ReadBlock ()

virtual void	SlowPushBack (uc16 character)

Protected Attributes
Handle< String >	string_

unsigned	length_

Protected Attributes inherited from v8::internal::BufferedUtf16CharacterStream
const uc16 *	pushback_limit_

uc16	buffer_ [kBufferSize]

Protected Attributes inherited from v8::internal::Utf16CharacterStream
const uint16_t *	buffer_cursor_

const uint16_t *	buffer_end_

unsigned	pos_

Additional Inherited Members
Static Protected Attributes inherited from v8::internal::BufferedUtf16CharacterStream
static const unsigned	kBufferSize = 512

static const unsigned	kPushBackStepSize = 16

Static Protected Attributes inherited from v8::internal::Utf16CharacterStream
static const uc32	kEndOfInput = -1

Detailed Description

Definition at line 40 of file scanner-character-streams.h.

Constructor & Destructor Documentation

◆ GenericStringUtf16CharacterStream()

v8::internal::GenericStringUtf16CharacterStream::GenericStringUtf16CharacterStream	(	Handle< String >	data,
		unsigned	start_position,
		unsigned	end_position
	)

Definition at line 127 of file scanner-character-streams.cc.

     : string_(data),
       length_(end_position) {
   DCHECK(end_position >= start_position);
   pos_ = start_position;
 }

References DCHECK, and v8::internal::Utf16CharacterStream::pos_.

◆ ~GenericStringUtf16CharacterStream()

v8::internal::GenericStringUtf16CharacterStream::~GenericStringUtf16CharacterStream ( )

virtual

Definition at line 138 of file scanner-character-streams.cc.

138 { }

Member Function Documentation

◆ BufferSeekForward()

unsigned v8::internal::GenericStringUtf16CharacterStream::BufferSeekForward ( unsigned delta )

protectedvirtual

Implements v8::internal::BufferedUtf16CharacterStream.

Definition at line 141 of file scanner-character-streams.cc.

                                                                             {
   unsigned old_pos = pos_;
   pos_ = Min(pos_ + delta, length_);
   ReadBlock();
   return pos_ - old_pos;
 }

References length_, v8::internal::Min(), v8::internal::Utf16CharacterStream::pos_, and v8::internal::BufferedUtf16CharacterStream::ReadBlock().

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◆ FillBuffer()

unsigned v8::internal::GenericStringUtf16CharacterStream::FillBuffer ( unsigned position )

protectedvirtual

Implements v8::internal::BufferedUtf16CharacterStream.

Definition at line 149 of file scanner-character-streams.cc.

                                                                         {
   if (from_pos >= length_) return 0;
   unsigned length = kBufferSize;
   if (from_pos + length > length_) {
     length = length_ - from_pos;
   }
   String::WriteToFlat<uc16>(*string_, buffer_, from_pos, from_pos + length);
   return length;
 }