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AK+Userland: Remove nullability feature for the ByteBuffer type

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Nobody seems to use this particular feature, in fact there were some
bugs which were uncovered by removing operator bool.
This commit is contained in:
Gunnar Beutner 2021-05-16 08:47:46 +02:00 committed by Andreas Kling
parent c4d0b0cd6b
commit 53d0150827
Notes: sideshowbarker 2024-07-18 18:01:38 +09:00 
Author: https://github.com/gunnarbeutner
Commit: https://github.com/SerenityOS/serenity/commit/53d01508274
Pull-request: https://github.com/SerenityOS/serenity/pull/7151
Reviewed-by: https://github.com/alimpfard
16 changed files with 12 additions and 36 deletions
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10
AK/ByteBuffer.h
View File

@ -28,7 +28,6 @@ public:
{
grow(other.size());
VERIFY(m_size == other.size());
VERIFY(!m_is_null);
__builtin_memcpy(data(), other.data(), other.size());
}
@ -96,10 +95,6 @@ public:
bool operator!=(ByteBuffer const& other) const { return !(*this == other); }
operator bool() const { return !is_null(); }
bool operator!() const { return is_null(); }
[[nodiscard]] bool is_null() const { return m_is_null; }
[[nodiscard]] u8& operator[](size_t i)
{
VERIFY(i < m_size);
@ -152,7 +147,6 @@ public:
void grow(size_t new_size)
{
m_is_null = false;
if (new_size <= m_size)
return;
if (new_size <= capacity()) {
@ -208,20 +202,17 @@ private:
ByteBuffer(size_t size)
{
grow(size);
VERIFY(!m_is_null);
VERIFY(m_size == size);
}
void move_from(ByteBuffer&& other)
{
m_is_null = other.m_is_null;
m_size = other.m_size;
if (other.m_size > inline_capacity) {
m_outline_buffer = other.m_outline_buffer;
m_outline_capacity = other.m_outline_capacity;
} else
__builtin_memcpy(m_inline_buffer, other.m_inline_buffer, other.m_size);
other.m_is_null = true;
other.m_size = 0;
}
@ -242,7 +233,6 @@ private:
size_t capacity() const { return is_inline() ? inline_capacity : m_outline_capacity; }
size_t m_size { 0 };
bool m_is_null { true };
union {
u8 m_inline_buffer[inline_capacity];
struct {

2
AK/String.h
View File

@ -240,8 +240,6 @@ public:
template<typename BufferType>
[[nodiscard]] static String copy(const BufferType& buffer, ShouldChomp should_chomp = NoChomp)
{
if (buffer.is_null())
return {};
if (buffer.is_empty())
return empty();
return String((const char*)buffer.data(), buffer.size(), should_chomp);

2
AK/Vector.h
View File

@ -150,8 +150,6 @@ public:
return false;
}
// NOTE: Vector::is_null() exists for the benefit of String::copy().
bool is_null() const { return false; }
bool is_empty() const { return size() == 0; }
ALWAYS_INLINE size_t size() const { return m_size; }
size_t capacity() const { return m_capacity; }

5
Userland/Applications/HexEditor/HexEditor.cpp
View File

@ -563,11 +563,6 @@ int HexEditor::find_and_highlight(ByteBuffer& needle, int start)
if (m_buffer.is_empty())
return -1;
if (needle.is_null()) {
dbgln("needle is null");
return -1;
}
auto raw_offset = memmem(m_buffer.data() + start, m_buffer.size(), needle.data(), needle.size());
if (raw_offset == NULL)
return -1;

2
Userland/Applications/HexEditor/HexEditorWidget.cpp
View File

@ -189,7 +189,7 @@ void HexEditorWidget::initialize_menubar(GUI::Menubar& menubar)
}));
edit_menu.add_action(GUI::Action::create("Find &Next", { Mod_None, Key_F3 }, Gfx::Bitmap::load_from_file("/res/icons/16x16/find-next.png"), [&](const GUI::Action&) {
if (m_search_text.is_empty() || m_search_buffer.is_empty() || m_search_buffer.is_null()) {
if (m_search_text.is_empty() || m_search_buffer.is_empty()) {
GUI::MessageBox::show(window(), "Nothing to search for", "Not found", GUI::MessageBox::Type::Warning);
return;
}

4
Userland/Libraries/LibCore/IODevice.cpp
View File

@ -33,8 +33,6 @@ const char* IODevice::error_string() const
int IODevice::read(u8* buffer, int length)
{
auto read_buffer = read(length);
if (read_buffer.is_null())
return 0;
memcpy(buffer, read_buffer.data(), length);
return read_buffer.size();
}
@ -151,8 +149,6 @@ ByteBuffer IODevice::read_all()
}
data.append((const u8*)read_buffer, nread);
}
if (data.is_empty())
return {};
return ByteBuffer::copy(data.data(), data.size());
}

2
Userland/Libraries/LibGemini/Job.cpp
View File

@ -110,7 +110,7 @@ void Job::on_socket_connected()
auto read_size = 64 * KiB;
auto payload = receive(read_size);
if (!payload) {
if (payload.is_empty()) {
if (eof()) {
finish_up();
return IterationDecision::Break;

2
Userland/Libraries/LibHTTP/Job.cpp
View File

@ -283,7 +283,7 @@ void Job::on_socket_connected()
}
auto payload = receive(read_size);
if (!payload) {
if (payload.is_empty()) {
if (eof()) {
finish_up();
return IterationDecision::Break;

4
Userland/Libraries/LibTLS/ClientHandshake.cpp
View File

@ -474,9 +474,7 @@ ssize_t TLSv12::handle_payload(ReadonlyBytes vbuffer)
}
break;
case Finished:
if (m_context.cached_handshake) {
m_context.cached_handshake.clear();
}
m_context.cached_handshake.clear();
if (m_context.handshake_messages[10] >= 1) {
dbgln("unexpected finished message");
payload_res = (i8)Error::UnexpectedMessage;

2
Userland/Libraries/LibWeb/CSS/Parser/DeprecatedCSSParser.cpp
View File

@ -431,7 +431,7 @@ public:
if (type != CSS::Selector::SimpleSelector::Type::Universal) {
while (is_valid_selector_char(peek()))
buffer.append(consume_one());
PARSE_VERIFY(!buffer.is_null());
PARSE_VERIFY(!buffer.is_empty());
}
auto value = String::copy(buffer);

2
Userland/Libraries/LibWeb/Loader/Resource.h
View File

@ -42,7 +42,7 @@ public:
bool is_failed() const { return m_failed; }
const String& error() const { return m_error; }
bool has_encoded_data() const { return !m_encoded_data.is_null(); }
bool has_encoded_data() const { return !m_encoded_data.is_empty(); }
const URL& url() const { return m_request.url(); }
const ByteBuffer& encoded_data() const { return m_encoded_data; }

2
Userland/Libraries/LibWeb/XHR/XMLHttpRequest.cpp
View File

@ -47,7 +47,7 @@ void XMLHttpRequest::fire_progress_event(const String& event_name, u64 transmitt
String XMLHttpRequest::response_text() const
{
if (m_response_object.is_null())
if (m_response_object.is_empty())
return {};
return String::copy(m_response_object);
}

2
Userland/Services/FileOperation/main.cpp
View File

@ -143,7 +143,7 @@ int perform_copy(const String& source, const String& destination)
while (true) {
print_progress();
auto buffer = source_file.read(65536);
if (buffer.is_null())
if (buffer.is_empty())
break;
if (!destination_file.write(buffer)) {
report_warning(String::formatted("Failed to write to destination file: {}", destination_file.error_string()));

2
Userland/Services/LookupServer/MulticastDNS.cpp
View File

@ -168,7 +168,7 @@ Vector<DNSAnswer> MulticastDNS::lookup(const DNSName& name, DNSRecordType record
}
auto buffer = receive(1024);
if (!buffer)
if (buffer.is_empty())
return {};
auto optional_packet = DNSPacket::from_raw_packet(buffer.data(), buffer.size());
if (!optional_packet.has_value()) {

2
Userland/Services/WebServer/Client.cpp
View File

@ -41,7 +41,7 @@ void Client::start()
{
m_socket->on_ready_to_read = [this] {
auto raw_request = m_socket->read_all();
if (raw_request.is_null()) {
if (raw_request.is_empty()) {
die();
return;
}

3
Userland/Utilities/du.cpp
View File

@ -106,7 +106,8 @@ int parse_args(int argc, char** argv, Vector<String>& files, DuOption& du_option
auto file = Core::File::construct(exclude_from);
bool success = file->open(Core::OpenMode::ReadOnly);
VERIFY(success);
if (const auto buff = file->read_all()) {
const auto buff = file->read_all();
if (!buff.is_empty()) {
String patterns = String::copy(buff, Chomp);
du_option.excluded_patterns.append(patterns.split('\n'));
}