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/*
* Copyright (C) 2003-2019 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.
*
*/
#include "config.h"
#include "Identifier.h"
#include "IdentifierInlines.h"
#include "NumericStrings.h"
#include <wtf/Assertions.h>
namespace JSC {
Ref<AtomStringImpl> Identifier::add(VM& vm, const char* c)
{
ASSERT(c);
ASSERT(c[0]);
if (!c[1])
return vm.smallStrings.singleCharacterStringRep(c[0]);
return *AtomStringImpl::add(c);
}
Ref<AtomStringImpl> Identifier::add8(VM& vm, const UChar* s, int length)
{
if (length == 1) {
UChar c = s[0];
ASSERT(isLatin1(c));
if (canUseSingleCharacterString(c))
return vm.smallStrings.singleCharacterStringRep(c);
}
if (!length)
return *static_cast<AtomStringImpl*>(StringImpl::empty());
return *AtomStringImpl::add(s, length);
}
Identifier Identifier::from(VM& vm, unsigned value)
{
return Identifier(vm, vm.numericStrings.add(value));
}
Identifier Identifier::from(VM& vm, int value)
{
return Identifier(vm, vm.numericStrings.add(value));
}
Identifier Identifier::from(VM& vm, double value)
{
return Identifier(vm, vm.numericStrings.add(value));
}
void Identifier::dump(PrintStream& out) const
{
if (impl()) {
if (impl()->isSymbol()) {
auto* symbol = static_cast<SymbolImpl*>(impl());
if (symbol->isPrivate())
out.print("PrivateSymbol.");
}
out.print(impl());
} else
out.print("<null identifier>");
}
#ifndef NDEBUG
void Identifier::checkCurrentAtomStringTable(VM& vm)
{
// Check the identifier table accessible through the threadspecific matches the
// vm's identifier table.
ASSERT_UNUSED(vm, vm.atomStringTable() == Thread::current().atomStringTable());
}
#else
// These only exists so that our exports are the same for debug and release builds.
// This would be an RELEASE_ASSERT_NOT_REACHED(), but we're in NDEBUG only code here!
NO_RETURN_DUE_TO_CRASH void Identifier::checkCurrentAtomStringTable(VM&) { CRASH(); }
#endif
} // namespace JSC
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