v8::internal::FlatStringReader Class Reference

#include <objects.h>

Inheritance diagram for v8::internal::FlatStringReader:

Collaboration diagram for v8::internal::FlatStringReader:

Public Member Functions
	FlatStringReader (Isolate *isolate, Handle< String > str)
	FlatStringReader (Isolate *isolate, Vector< const char > input)
void	PostGarbageCollection ()
uc32	Get (int index)
int	length ()

Private Attributes
String **	str_
bool	is_one_byte_
int	length_
const void *	start_

Detailed Description

Definition at line 9256 of file objects.h.

Constructor & Destructor Documentation

FlatStringReader() [1/2]

v8::internal::FlatStringReader::FlatStringReader	(	Isolate *	isolate,
		Handle< String >	str
	)

Definition at line 8162 of file objects.cc.

    : Relocatable(isolate),
      str_(str.location()),
      length_(str->length()) {
  PostGarbageCollection();
}

References PostGarbageCollection().

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FlatStringReader() [2/2]

v8::internal::FlatStringReader::FlatStringReader	(	Isolate *	isolate,
		Vector< const char >	input
	)

Definition at line 8170 of file objects.cc.

    : Relocatable(isolate),
      str_(0),
      is_one_byte_(true),
      length_(input.length()),
      start_(input.start()) {}

Member Function Documentation

Get()

uc32 v8::internal::FlatStringReader::Get ( int  index )

inline

Definition at line 467 of file objects-inl.h.

                                    {
  DCHECK(0 <= index && index <= length_);
  if (is_one_byte_) {
    return static_cast<const byte*>(start_)[index];
  } else {
    return static_cast<const uc16*>(start_)[index];
  }
}

References DCHECK, is_one_byte_, length_, and start_.

length()

int v8::internal::FlatStringReader::length ( )

inline

Definition at line 9262 of file objects.h.

{ return length_; }

PostGarbageCollection()

void v8::internal::FlatStringReader::PostGarbageCollection

(

)

Definition at line 8178 of file objects.cc.

                                             {
  if (str_ == NULL) return;
  Handle<String> str(str_);
  DCHECK(str->IsFlat());
  DisallowHeapAllocation no_gc;
  // This does not actually prevent the vector from being relocated later.
  String::FlatContent content = str->GetFlatContent();
  DCHECK(content.IsFlat());
  is_one_byte_ = content.IsOneByte();
  if (is_one_byte_) {
    start_ = content.ToOneByteVector().start();
  } else {
    start_ = content.ToUC16Vector().start();
  }
}

References DCHECK, is_one_byte_, v8::internal::String::FlatContent::IsFlat(), v8::internal::String::FlatContent::IsOneByte(), NULL, v8::internal::Vector< T >::start(), start_, str_, v8::internal::String::FlatContent::ToOneByteVector(), and v8::internal::String::FlatContent::ToUC16Vector().

Referenced by FlatStringReader().

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Member Data Documentation

is_one_byte_

bool v8::internal::FlatStringReader::is_one_byte_

private

Definition at line 9265 of file objects.h.

Referenced by Get(), and PostGarbageCollection().

length_

int v8::internal::FlatStringReader::length_

private

Definition at line 9266 of file objects.h.

Referenced by Get().

start_

const void* v8::internal::FlatStringReader::start_

private

Definition at line 9267 of file objects.h.

Referenced by Get(), and PostGarbageCollection().

str_

String** v8::internal::FlatStringReader::str_

private

Definition at line 9264 of file objects.h.

Referenced by PostGarbageCollection().

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

• /mnt/V8SourceCode/src/objects.h
• /mnt/V8SourceCode/src/objects-inl.h
• /mnt/V8SourceCode/src/objects.cc