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/*
* Copyright (C) 2004, 2005, 2006, 2007, 2008, 2013 Apple Inc. All rights
* reserved.
* Copyright (C) 2010 Patrick Gansterer <paroga@paroga.com>
* Copyright (C) 2012 Google 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 "third_party/blink/renderer/platform/wtf/text/atomic_string.h"
#include "base/numerics/safe_conversions.h"
#include "third_party/blink/renderer/platform/wtf/dtoa.h"
#include "third_party/blink/renderer/platform/wtf/size_assertions.h"
#include "third_party/blink/renderer/platform/wtf/text/atomic_string_table.h"
#include "third_party/blink/renderer/platform/wtf/text/case_map.h"
#include "third_party/blink/renderer/platform/wtf/text/string_impl.h"
#include "third_party/perfetto/include/perfetto/tracing/traced_value.h"
namespace blink {
ASSERT_SIZE(AtomicString, String);
AtomicString::AtomicString(base::span<const LChar> chars)
: string_(AtomicStringTable::Instance().Add(
chars.data(),
base::checked_cast<wtf_size_t>(chars.size()))) {}
AtomicString::AtomicString(base::span<const UChar> chars,
AtomicStringUCharEncoding encoding)
: string_(AtomicStringTable::Instance().Add(
chars.data(),
base::checked_cast<wtf_size_t>(chars.size()),
encoding)) {}
AtomicString::AtomicString(const UChar* chars)
: string_(AtomicStringTable::Instance().Add(
chars,
// SAFETY: safe when `chars` points to a null-terminated cstring.
chars ? UNSAFE_BUFFERS(LengthOfNullTerminatedString(chars)) : 0,
AtomicStringUCharEncoding::kUnknown)) {}
AtomicString::AtomicString(const StringView& string_view)
: string_(AtomicStringTable::Instance().Add(string_view)) {}
scoped_refptr<StringImpl> AtomicString::AddSlowCase(
scoped_refptr<StringImpl>&& string) {
DCHECK(!string->IsAtomic());
return AtomicStringTable::Instance().Add(std::move(string));
}
scoped_refptr<StringImpl> AtomicString::AddSlowCase(StringImpl* string) {
DCHECK(!string->IsAtomic());
return AtomicStringTable::Instance().Add(string);
}
AtomicString AtomicString::FromUTF8(base::span<const uint8_t> bytes) {
if (!bytes.data()) {
return g_null_atom;
}
if (bytes.empty()) {
return g_empty_atom;
}
return AtomicString(AtomicStringTable::Instance().AddUTF8(bytes));
}
AtomicString AtomicString::FromUTF8(const char* chars) {
if (!chars)
return g_null_atom;
if (!*chars)
return g_empty_atom;
return AtomicString(AtomicStringTable::Instance().AddUTF8(
base::as_byte_span(std::string_view(chars))));
}
AtomicString AtomicString::FromUTF8(std::string_view utf8_string) {
return FromUTF8(base::as_byte_span(utf8_string));
}
AtomicString AtomicString::LowerASCII(AtomicString source) {
if (source.IsLowerASCII()) [[likely]] {
return source;
}
StringImpl* impl = source.Impl();
// if impl is null, then IsLowerASCII() should have returned true.
DCHECK(impl);
scoped_refptr<StringImpl> new_impl = impl->LowerASCII();
return AtomicString(String(std::move(new_impl)));
}
AtomicString AtomicString::LowerASCII() const {
return AtomicString::LowerASCII(*this);
}
AtomicString AtomicString::UpperASCII() const {
StringImpl* impl = Impl();
if (!impl) [[unlikely]] {
return *this;
}
return AtomicString(impl->UpperASCII());
}
AtomicString AtomicString::Number(double number, unsigned precision) {
NumberToStringBuffer buffer;
return AtomicString(NumberToFixedPrecisionString(number, precision, buffer));
}
std::ostream& operator<<(std::ostream& out, const AtomicString& s) {
return out << s.GetString();
}
void AtomicString::WriteIntoTrace(perfetto::TracedValue context) const {
perfetto::WriteIntoTracedValue(std::move(context), GetString());
}
#ifndef NDEBUG
void AtomicString::Show() const {
string_.Show();
}
#endif
} // namespace blink
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