#ifndef OpaqueJSString_h
#define OpaqueJSString_h
#include <atomic>
#include <wtf/ThreadSafeRefCounted.h>
#include <wtf/text/WTFString.h>
namespace JSC {
class Identifier;
class VM;
}
struct OpaqueJSString : public ThreadSafeRefCounted<OpaqueJSString> {
static Ref<OpaqueJSString> create()
{
return adoptRef(*new OpaqueJSString);
}
static Ref<OpaqueJSString> create(const LChar* characters, unsigned length)
{
return adoptRef(*new OpaqueJSString(characters, length));
}
static Ref<OpaqueJSString> create(const UChar* characters, unsigned length)
{
return adoptRef(*new OpaqueJSString(characters, length));
}
JS_EXPORT_PRIVATE static RefPtr<OpaqueJSString> create(const String&);
JS_EXPORT_PRIVATE static RefPtr<OpaqueJSString> create(String&&);
JS_EXPORT_PRIVATE ~OpaqueJSString();
bool is8Bit() { return m_string.is8Bit(); }
const LChar* characters8() { return m_string.characters8(); }
const UChar* characters16() { return m_string.characters16(); }
unsigned length() { return m_string.length(); }
const UChar* characters();
JS_EXPORT_PRIVATE String string() const;
JSC::Identifier identifier(JSC::VM*) const;
static bool equal(const OpaqueJSString*, const OpaqueJSString*);
private:
friend class WTF::ThreadSafeRefCounted<OpaqueJSString>;
OpaqueJSString()
: m_characters(nullptr)
{
}
OpaqueJSString(const String& string)
: m_string(string.isolatedCopy())
, m_characters(m_string.impl() && m_string.is8Bit() ? nullptr : const_cast<UChar*>(m_string.characters16()))
{
}
explicit OpaqueJSString(String&& string)
: m_string(WTFMove(string))
, m_characters(m_string.impl() && m_string.is8Bit() ? nullptr : const_cast<UChar*>(m_string.characters16()))
{
}
OpaqueJSString(const LChar* characters, unsigned length)
: m_string(characters, length)
, m_characters(nullptr)
{
}
OpaqueJSString(const UChar* characters, unsigned length)
: m_string(characters, length)
, m_characters(m_string.impl() && m_string.is8Bit() ? nullptr : const_cast<UChar*>(m_string.characters16()))
{
}
String m_string;
std::atomic<UChar*> m_characters;
};
#endif