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/*
* Copyright (C) 2003, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#ifndef Identifier_h
#define Identifier_h
#include "JSGlobalData.h"
#include "ThreadSpecific.h"
#include "UString.h"
namespace JSC {
class ExecState;
class Identifier {
friend class Structure;
public:
Identifier() { }
Identifier(ExecState* exec, const char* s) : _ustring(add(exec, s)) { } // Only to be used with string literals.
Identifier(ExecState* exec, const UChar* s, int length) : _ustring(add(exec, s, length)) { }
Identifier(ExecState* exec, UString::Rep* rep) : _ustring(add(exec, rep)) { }
Identifier(ExecState* exec, const UString& s) : _ustring(add(exec, s.rep())) { }
Identifier(JSGlobalData* globalData, const char* s) : _ustring(add(globalData, s)) { } // Only to be used with string literals.
Identifier(JSGlobalData* globalData, const UChar* s, int length) : _ustring(add(globalData, s, length)) { }
Identifier(JSGlobalData* globalData, UString::Rep* rep) : _ustring(add(globalData, rep)) { }
Identifier(JSGlobalData* globalData, const UString& s) : _ustring(add(globalData, s.rep())) { }
// Special constructor for cases where we overwrite an object in place.
Identifier(PlacementNewAdoptType) : _ustring(PlacementNewAdopt) { }
const UString& ustring() const { return _ustring; }
const UChar* data() const { return _ustring.data(); }
int size() const { return _ustring.size(); }
const char* ascii() const { return _ustring.ascii(); }
static Identifier from(ExecState* exec, unsigned y);
static Identifier from(ExecState* exec, int y);
static Identifier from(ExecState* exec, double y);
bool isNull() const { return _ustring.isNull(); }
bool isEmpty() const { return _ustring.isEmpty(); }
uint32_t toUInt32(bool* ok) const { return _ustring.toUInt32(ok); }
uint32_t toUInt32(bool* ok, bool tolerateEmptyString) const { return _ustring.toUInt32(ok, tolerateEmptyString); };
uint32_t toStrictUInt32(bool* ok) const { return _ustring.toStrictUInt32(ok); }
unsigned toArrayIndex(bool* ok) const { return _ustring.toArrayIndex(ok); }
double toDouble() const { return _ustring.toDouble(); }
friend bool operator==(const Identifier&, const Identifier&);
friend bool operator!=(const Identifier&, const Identifier&);
friend bool operator==(const Identifier&, const char*);
friend bool operator!=(const Identifier&, const char*);
static void remove(UString::Rep*);
static bool equal(const UString::Rep*, const char*);
static bool equal(const UString::Rep*, const UChar*, unsigned length);
static bool equal(const UString::Rep* a, const UString::Rep* b) { return JSC::equal(a, b); }
static PassRefPtr<UString::Rep> add(ExecState*, const char*); // Only to be used with string literals.
static PassRefPtr<UString::Rep> add(JSGlobalData*, const char*); // Only to be used with string literals.
private:
UString _ustring;
static bool equal(const Identifier& a, const Identifier& b) { return a._ustring.rep() == b._ustring.rep(); }
static bool equal(const Identifier& a, const char* b) { return equal(a._ustring.rep(), b); }
static PassRefPtr<UString::Rep> add(ExecState*, const UChar*, int length);
static PassRefPtr<UString::Rep> add(JSGlobalData*, const UChar*, int length);
static PassRefPtr<UString::Rep> add(ExecState* exec, UString::Rep* r)
{
#ifndef NDEBUG
checkCurrentIdentifierTable(exec);
#endif
if (r->isIdentifier())
return r;
return addSlowCase(exec, r);
}
static PassRefPtr<UString::Rep> add(JSGlobalData* globalData, UString::Rep* r)
{
#ifndef NDEBUG
checkCurrentIdentifierTable(globalData);
#endif
if (r->isIdentifier())
return r;
return addSlowCase(globalData, r);
}
static PassRefPtr<UString::Rep> addSlowCase(ExecState*, UString::Rep* r);
static PassRefPtr<UString::Rep> addSlowCase(JSGlobalData*, UString::Rep* r);
static void checkCurrentIdentifierTable(ExecState*);
static void checkCurrentIdentifierTable(JSGlobalData*);
};
inline bool operator==(const Identifier& a, const Identifier& b)
{
return Identifier::equal(a, b);
}
inline bool operator!=(const Identifier& a, const Identifier& b)
{
return !Identifier::equal(a, b);
}
inline bool operator==(const Identifier& a, const char* b)
{
return Identifier::equal(a, b);
}
inline bool operator!=(const Identifier& a, const char* b)
{
return !Identifier::equal(a, b);
}
IdentifierTable* createIdentifierTable();
void deleteIdentifierTable(IdentifierTable*);
struct ThreadIdentifierTableData {
ThreadIdentifierTableData()
: defaultIdentifierTable(0)
, currentIdentifierTable(0)
{
}
IdentifierTable* defaultIdentifierTable;
IdentifierTable* currentIdentifierTable;
};
extern WTF::ThreadSpecific<ThreadIdentifierTableData>* g_identifierTableSpecific;
void createIdentifierTableSpecific();
inline IdentifierTable* defaultIdentifierTable()
{
if (!g_identifierTableSpecific)
createIdentifierTableSpecific();
ThreadIdentifierTableData& data = **g_identifierTableSpecific;
return data.defaultIdentifierTable;
}
inline void setDefaultIdentifierTable(IdentifierTable* identifierTable)
{
if (!g_identifierTableSpecific)
createIdentifierTableSpecific();
ThreadIdentifierTableData& data = **g_identifierTableSpecific;
data.defaultIdentifierTable = identifierTable;
}
inline IdentifierTable* currentIdentifierTable()
{
if (!g_identifierTableSpecific)
createIdentifierTableSpecific();
ThreadIdentifierTableData& data = **g_identifierTableSpecific;
return data.currentIdentifierTable;
}
inline IdentifierTable* setCurrentIdentifierTable(IdentifierTable* identifierTable)
{
if (!g_identifierTableSpecific)
createIdentifierTableSpecific();
ThreadIdentifierTableData& data = **g_identifierTableSpecific;
IdentifierTable* oldIdentifierTable = data.currentIdentifierTable;
data.currentIdentifierTable = identifierTable;
return oldIdentifierTable;
}
inline void resetCurrentIdentifierTable()
{
if (!g_identifierTableSpecific)
createIdentifierTableSpecific();
ThreadIdentifierTableData& data = **g_identifierTableSpecific;
data.currentIdentifierTable = data.defaultIdentifierTable;
}
} // namespace JSC
#endif // Identifier_h
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