v8  10.1.124 (node 18.2.0)
V8 is Google's open source JavaScript engine
String::ExternalStringResource Class Referenceabstract

#include <v8-primitive.h>

Inheritance diagram for String::ExternalStringResource:
Collaboration diagram for String::ExternalStringResource:

Public Member Functions

 ~ExternalStringResource () override=default
 
virtual const uint16_t * data () const =0
 
virtual size_t length () const =0
 
const uint16_t * cached_data () const
 
void UpdateDataCache ()
 
- Public Member Functions inherited from String::ExternalStringResourceBase
virtual ~ExternalStringResourceBase ()=default
 
virtual bool IsCacheable () const
 
 ExternalStringResourceBase (const ExternalStringResourceBase &)=delete
 
void operator= (const ExternalStringResourceBase &)=delete
 

Protected Member Functions

 ExternalStringResource ()=default
 
- Protected Member Functions inherited from String::ExternalStringResourceBase
 ExternalStringResourceBase ()=default
 
virtual void Dispose ()
 
virtual void Lock () const
 
virtual void Unlock () const
 

Detailed Description

An ExternalStringResource is a wrapper around a two-byte string buffer that resides outside V8's heap. Implement an ExternalStringResource to manage the life cycle of the underlying buffer. Note that the string data must be immutable.

Definition at line 281 of file v8-primitive.h.

Constructor & Destructor Documentation

◆ ~ExternalStringResource()

~ExternalStringResource ( )
overridedefault

Override the destructor to manage the life cycle of the underlying buffer.

◆ ExternalStringResource()

ExternalStringResource ( )
protecteddefault

Member Function Documentation

◆ cached_data()

const uint16_t* cached_data ( ) const
inline

Returns the cached data from the underlying buffer. This method can be called only for cacheable resources (i.e. IsCacheable() == true) and only after UpdateDataCache() was called.

Definition at line 305 of file v8-primitive.h.

◆ data()

virtual const uint16_t* data ( ) const
pure virtual

The string data from the underlying buffer. If the resource is cacheable then data() must return the same value for all invocations.

◆ length()

virtual size_t length ( ) const
pure virtual

The length of the string. That is, the number of two-byte characters.

◆ UpdateDataCache()

void UpdateDataCache ( )

Update {cached_data_} with the data from the underlying buffer. This can be called only for cacheable resources.


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