AK: Move Stream and SeekableStream from LibCore

`Stream` will be qualified as `AK::Stream` until we remove the
`Core::Stream` namespace. `IODevice` now reuses the `SeekMode` that is
defined by `SeekableStream`, since defining its own would require us to
qualify it with `AK::SeekMode` everywhere.

AK/CMakeLists.txt

@@ -19,6 +19,7 @@ set(AK_SOURCES
     NumberFormat.cpp
     Random.cpp
     StackInfo.cpp
+    Stream.cpp
     String.cpp
     StringBuilder.cpp
     StringFloatingPointConversions.cpp

AK/Forward.h

@@ -35,6 +35,8 @@ class StackInfo;
 class DeprecatedFlyString;
 class DeprecatedString;
 class DeprecatedStringCodePointIterator;
+class SeekableStream;
+class Stream;
 class StringBuilder;
 class StringImpl;
 class StringView;
@@ -183,9 +185,11 @@ using AK::Optional;
 using AK::OwnPtr;
 using AK::ReadonlyBytes;
 using AK::RefPtr;
+using AK::SeekableStream;
 using AK::SinglyLinkedList;
 using AK::Span;
 using AK::StackInfo;
+using AK::Stream;
 using AK::String;
 using AK::StringBuilder;
 using AK::StringImpl;

AK/Stream.cpp

@@ -0,0 +1,132 @@
+/*
+ * Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2021, sin-ack <sin-ack@protonmail.com>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <AK/ByteBuffer.h>
+#include <AK/Format.h>
+#include <AK/Stream.h>
+
+namespace AK {
+
+ErrorOr<void> Stream::read_entire_buffer(Bytes buffer)
+{
+    size_t nread = 0;
+    while (nread < buffer.size()) {
+        if (is_eof())
+            return Error::from_string_literal("Reached end-of-file before filling the entire buffer");
+
+        auto result = read(buffer.slice(nread));
+        if (result.is_error()) {
+            if (result.error().is_errno() && result.error().code() == EINTR) {
+                continue;
+            }
+
+            return result.release_error();
+        }
+
+        nread += result.value().size();
+    }
+
+    return {};
+}
+
+ErrorOr<ByteBuffer> Stream::read_until_eof(size_t block_size)
+{
+    return read_until_eof_impl(block_size);
+}
+
+ErrorOr<ByteBuffer> Stream::read_until_eof_impl(size_t block_size, size_t expected_file_size)
+{
+    ByteBuffer data;
+    data.ensure_capacity(expected_file_size);
+
+    size_t total_read = 0;
+    Bytes buffer;
+    while (!is_eof()) {
+        if (buffer.is_empty()) {
+            buffer = TRY(data.get_bytes_for_writing(block_size));
+        }
+
+        auto nread = TRY(read(buffer)).size();
+        total_read += nread;
+        buffer = buffer.slice(nread);
+    }
+
+    data.resize(total_read);
+    return data;
+}
+
+ErrorOr<void> Stream::discard(size_t discarded_bytes)
+{
+    // Note: This was chosen arbitrarily.
+    // Note: This can't be PAGE_SIZE because it is defined to sysconf() on Lagom.
+    constexpr size_t continuous_read_size = 4096;
+
+    Array<u8, continuous_read_size> buffer;
+
+    while (discarded_bytes > 0) {
+        if (is_eof())
+            return Error::from_string_literal("Reached end-of-file before reading all discarded bytes");
+
+        auto slice = TRY(read(buffer.span().slice(0, min(discarded_bytes, continuous_read_size))));
+        discarded_bytes -= slice.size();
+    }
+
+    return {};
+}
+
+ErrorOr<void> Stream::write_entire_buffer(ReadonlyBytes buffer)
+{
+    size_t nwritten = 0;
+    while (nwritten < buffer.size()) {
+        auto result = write(buffer.slice(nwritten));
+        if (result.is_error()) {
+            if (result.error().is_errno() && result.error().code() == EINTR) {
+                continue;
+            }
+
+            return result.release_error();
+        }
+
+        nwritten += result.value();
+    }
+
+    return {};
+}
+
+ErrorOr<size_t> SeekableStream::tell() const
+{
+    // Seek with 0 and SEEK_CUR does not modify anything despite the const_cast,
+    // so it's safe to do this.
+    return const_cast<SeekableStream*>(this)->seek(0, SeekMode::FromCurrentPosition);
+}
+
+ErrorOr<size_t> SeekableStream::size()
+{
+    auto original_position = TRY(tell());
+
+    auto seek_result = seek(0, SeekMode::FromEndPosition);
+    if (seek_result.is_error()) {
+        // Let's try to restore the original position, just in case.
+        auto restore_result = seek(original_position, SeekMode::SetPosition);
+        if (restore_result.is_error()) {
+            dbgln("SeekableStream::size: Couldn't restore initial position, stream might have incorrect position now!");
+        }
+
+        return seek_result.release_error();
+    }
+
+    TRY(seek(original_position, SeekMode::SetPosition));
+    return seek_result.value();
+}
+
+ErrorOr<void> SeekableStream::discard(size_t discarded_bytes)
+{
+    TRY(seek(discarded_bytes, SeekMode::FromCurrentPosition));
+    return {};
+}
+
+}

AK/Stream.h

@@ -0,0 +1,133 @@
+/*
+ * Copyright (c) 2021, sin-ack <sin-ack@protonmail.com>
+ * Copyright (c) 2022, the SerenityOS developers.
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <AK/Error.h>
+#include <AK/Forward.h>
+#include <AK/Traits.h>
+
+namespace AK {
+
+/// The base, abstract class for stream operations. This class defines the
+/// operations one can perform on every stream.
+/// Operations without a sensible default that are unsupported by an implementation
+/// of a Stream should return EBADF as an error.
+class Stream {
+public:
+    /// Reads into a buffer, with the maximum size being the size of the buffer.
+    /// The amount of bytes read can be smaller than the size of the buffer.
+    /// Returns either the bytes that were read, or an errno in the case of
+    /// failure.
+    virtual ErrorOr<Bytes> read(Bytes) = 0;
+    /// Tries to fill the entire buffer through reading. Returns whether the
+    /// buffer was filled without an error.
+    virtual ErrorOr<void> read_entire_buffer(Bytes);
+    /// Reads the stream until EOF, storing the contents into a ByteBuffer which
+    /// is returned once EOF is encountered. The block size determines the size
+    /// of newly allocated chunks while reading.
+    virtual ErrorOr<ByteBuffer> read_until_eof(size_t block_size = 4096);
+    /// Discards the given number of bytes from the stream. As this is usually used
+    /// as an efficient version of `read_entire_buffer`, it returns an error
+    /// if reading failed or if not all bytes could be discarded.
+    /// Unless specifically overwritten, this just uses read() to read into an
+    /// internal stack-based buffer.
+    virtual ErrorOr<void> discard(size_t discarded_bytes);
+
+    /// Tries to write the entire contents of the buffer. It is possible for
+    /// less than the full buffer to be written. Returns either the amount of
+    /// bytes written into the stream, or an errno in the case of failure.
+    virtual ErrorOr<size_t> write(ReadonlyBytes) = 0;
+    /// Same as write, but does not return until either the entire buffer
+    /// contents are written or an error occurs.
+    virtual ErrorOr<void> write_entire_buffer(ReadonlyBytes);
+
+    template<typename T>
+    requires(requires(Stream& stream) { { T::read_from_stream(stream) } -> SameAs<ErrorOr<T>>; })
+    ErrorOr<T> read_value()
+    {
+        return T::read_from_stream(*this);
+    }
+
+    template<typename T>
+    requires(Traits<T>::is_trivially_serializable())
+    ErrorOr<T> read_value()
+    {
+        alignas(T) u8 buffer[sizeof(T)] = {};
+        TRY(read_entire_buffer({ &buffer, sizeof(buffer) }));
+        return bit_cast<T>(buffer);
+    }
+
+    template<typename T>
+    requires(requires(T t, Stream& stream) { { t.write_to_stream(stream) } -> SameAs<ErrorOr<void>>; })
+    ErrorOr<void> write_value(T const& value)
+    {
+        return value.write_to_stream(*this);
+    }
+
+    template<typename T>
+    requires(Traits<T>::is_trivially_serializable())
+    ErrorOr<void> write_value(T const& value)
+    {
+        return write_entire_buffer({ &value, sizeof(value) });
+    }
+
+    /// Returns whether the stream has reached the end of file. For sockets,
+    /// this most likely means that the protocol has disconnected (in the case
+    /// of TCP). For seekable streams, this means the end of the file. Note that
+    /// is_eof will only return true _after_ a read with 0 length, so this
+    /// method should be called after a read.
+    virtual bool is_eof() const = 0;
+
+    virtual bool is_open() const = 0;
+    virtual void close() = 0;
+
+    virtual ~Stream()
+    {
+    }
+
+protected:
+    /// Provides a default implementation of read_until_eof that works for streams
+    /// that behave like POSIX file descriptors. expected_file_size can be
+    /// passed as a heuristic for what the Stream subclass expects the file
+    /// content size to be in order to reduce allocations (does not affect
+    /// actual reading).
+    ErrorOr<ByteBuffer> read_until_eof_impl(size_t block_size, size_t expected_file_size = 0);
+};
+
+enum class SeekMode {
+    SetPosition,
+    FromCurrentPosition,
+    FromEndPosition,
+};
+
+/// Adds seekability to a Stream. Classes inheriting from SeekableStream
+/// will be seekable to any point in the stream.
+class SeekableStream : public Stream {
+public:
+    /// Seeks to the given position in the given mode. Returns either the
+    /// current position of the file, or an errno in the case of an error.
+    virtual ErrorOr<size_t> seek(i64 offset, SeekMode) = 0;
+    /// Returns the current position of the file, or an errno in the case of
+    /// an error.
+    virtual ErrorOr<size_t> tell() const;
+    /// Returns the total size of the stream, or an errno in the case of an
+    /// error. May not preserve the original position on the stream on failure.
+    virtual ErrorOr<size_t> size();
+    /// Shrinks or extends the stream to the given size. Returns an errno in
+    /// the case of an error.
+    virtual ErrorOr<void> truncate(off_t length) = 0;
+    /// Seeks until after the given amount of bytes to be discarded instead of
+    /// reading and discarding everything manually;
+    virtual ErrorOr<void> discard(size_t discarded_bytes) override;
+};
+
+}
+
+#if USING_AK_GLOBALLY
+using AK::SeekMode;
+#endif

Documentation/CodingStyle.md

@@ -666,7 +666,7 @@ T* ret = reinterpret_cast<T*>(buffer);
 ```
 
 ```cpp
-// Core::Stream::SeekableStream::tell()
+// SeekableStream::tell()
 
 // Seek with 0 and SEEK_CUR does not modify anything despite the const_cast,
 // so it's safe to do this.

Ladybird/RequestManagerQt.h

@@ -44,7 +44,7 @@ private:
 
         virtual void set_should_buffer_all_input(bool) override { }
         virtual bool stop() override { return false; }
-        virtual void stream_into(Core::Stream::Stream&) override { }
+        virtual void stream_into(AK::Stream&) override { }
 
         void did_finish();
 

Meta/Lagom/Tools/CodeGenerators/IPCCompiler/main.cpp

@@ -338,7 +338,7 @@ public:)~~~");
     static i32 static_message_id() { return (int)MessageID::@message.pascal_name@; }
     virtual const char* message_name() const override { return "@endpoint.name@::@message.pascal_name@"; }
 
-    static ErrorOr<NonnullOwnPtr<@message.pascal_name@>> decode(Core::Stream::Stream& stream, Core::Stream::LocalSocket& socket)
+    static ErrorOr<NonnullOwnPtr<@message.pascal_name@>> decode(AK::Stream& stream, Core::Stream::LocalSocket& socket)
     {
         IPC::Decoder decoder { stream, socket };)~~~");
 

Meta/Lagom/Tools/CodeGenerators/LibUnicode/GenerateUnicodeData.cpp

@@ -450,7 +450,7 @@ static ErrorOr<void> parse_name_aliases(Core::Stream::BufferedFile& file, Unicod
 
 static ErrorOr<void> parse_value_alias_list(Core::Stream::BufferedFile& file, StringView desired_category, Vector<DeprecatedString> const& value_list, Vector<Alias>& prop_aliases, bool primary_value_is_first = true, bool sanitize_alias = false)
 {
-    TRY(file.seek(0, Core::Stream::SeekMode::SetPosition));
+    TRY(file.seek(0, SeekMode::SetPosition));
     Array<u8, 1024> buffer;
 
     auto append_alias = [&](auto alias, auto value) {
@@ -646,7 +646,7 @@ static ErrorOr<void> parse_block_display_names(Core::Stream::BufferedFile& file,
         unicode_data.block_display_names.append({ code_point_range, index });
     }
 
-    TRY(file.seek(0, Core::Stream::SeekMode::SetPosition));
+    TRY(file.seek(0, SeekMode::SetPosition));
 
     return {};
 }

Meta/Lagom/Wasm/js_repl.cpp

@@ -63,7 +63,7 @@ void displayln(CheckedFormatString<Args...> format_string, Args const&... args)
 
 void displayln() { user_display("\n", 1); }
 
-class UserDisplayStream final : public Core::Stream::Stream {
+class UserDisplayStream final : public AK::Stream {
     virtual ErrorOr<Bytes> read(Bytes) override { return Error::from_string_view("Not readable"sv); };
     virtual ErrorOr<size_t> write(ReadonlyBytes bytes) override
     {

Tests/LibCore/TestLibCoreIODevice.cpp

@@ -53,19 +53,19 @@ TEST_CASE(file_get_read_position)
         }
 
         off_t offset = 0;
-        VERIFY(file->seek(0, Core::SeekMode::FromCurrentPosition, &offset));
+        VERIFY(file->seek(0, SeekMode::FromCurrentPosition, &offset));
         EXPECT_EQ(offset, static_cast<off_t>(i + step_size));
     }
 
     {
         off_t offset = 0;
-        VERIFY(file->seek(0, Core::SeekMode::FromEndPosition, &offset));
+        VERIFY(file->seek(0, SeekMode::FromEndPosition, &offset));
         EXPECT_EQ(offset, 10240);
     }
 
     {
         off_t offset = 0;
-        VERIFY(file->seek(0, Core::SeekMode::SetPosition, &offset));
+        VERIFY(file->seek(0, SeekMode::SetPosition, &offset));
         EXPECT_EQ(offset, 0);
     }
 }

Tests/LibCore/TestLibCoreStream.cpp

@@ -89,17 +89,17 @@ TEST_CASE(file_seeking_around)
 
     StringView buffer_contents { buffer.bytes() };
 
-    EXPECT(!file->seek(500, Core::Stream::SeekMode::SetPosition).is_error());
+    EXPECT(!file->seek(500, SeekMode::SetPosition).is_error());
     EXPECT_EQ(file->tell().release_value(), 500ul);
     EXPECT(!file->read_entire_buffer(buffer).is_error());
     EXPECT_EQ(buffer_contents, expected_seek_contents1);
 
-    EXPECT(!file->seek(234, Core::Stream::SeekMode::FromCurrentPosition).is_error());
+    EXPECT(!file->seek(234, SeekMode::FromCurrentPosition).is_error());
     EXPECT_EQ(file->tell().release_value(), 750ul);
     EXPECT(!file->read_entire_buffer(buffer).is_error());
     EXPECT_EQ(buffer_contents, expected_seek_contents2);
 
-    EXPECT(!file->seek(-105, Core::Stream::SeekMode::FromEndPosition).is_error());
+    EXPECT(!file->seek(-105, SeekMode::FromEndPosition).is_error());
     EXPECT_EQ(file->tell().release_value(), 8597ul);
     EXPECT(!file->read_entire_buffer(buffer).is_error());
     EXPECT_EQ(buffer_contents, expected_seek_contents3);
@@ -122,7 +122,7 @@ TEST_CASE(file_adopt_fd)
 
     StringView buffer_contents { buffer.bytes() };
 
-    EXPECT(!file->seek(500, Core::Stream::SeekMode::SetPosition).is_error());
+    EXPECT(!file->seek(500, SeekMode::SetPosition).is_error());
     EXPECT_EQ(file->tell().release_value(), 500ul);
     EXPECT(!file->read_entire_buffer(buffer).is_error());
     EXPECT_EQ(buffer_contents, expected_seek_contents1);
@@ -428,14 +428,14 @@ TEST_CASE(buffered_long_file_read)
     auto file = maybe_buffered_file.release_value();
 
     auto buffer = ByteBuffer::create_uninitialized(4096).release_value();
-    EXPECT(!file->seek(255, Core::Stream::SeekMode::SetPosition).is_error());
+    EXPECT(!file->seek(255, SeekMode::SetPosition).is_error());
     EXPECT(file->can_read_line().release_value());
     auto maybe_line = file->read_line(buffer);
     EXPECT(!maybe_line.is_error());
     EXPECT_EQ(maybe_line.value().length(), 4095ul); // 4095 bytes on the third line
 
     // Testing that buffering with seeking works properly
-    EXPECT(!file->seek(365, Core::Stream::SeekMode::SetPosition).is_error());
+    EXPECT(!file->seek(365, SeekMode::SetPosition).is_error());
     auto maybe_after_seek_line = file->read_line(buffer);
     EXPECT(!maybe_after_seek_line.is_error());
     EXPECT_EQ(maybe_after_seek_line.value().length(), 3985ul); // 4095 - 110
@@ -499,7 +499,7 @@ TEST_CASE(buffered_file_tell_and_seek)
 
     // Seek seven characters forward.
     {
-        auto current_offset = buffered_file->seek(7, Core::Stream::SeekMode::FromCurrentPosition).release_value();
+        auto current_offset = buffered_file->seek(7, SeekMode::FromCurrentPosition).release_value();
         EXPECT_EQ(current_offset, 9ul);
     }
 
@@ -513,7 +513,7 @@ TEST_CASE(buffered_file_tell_and_seek)
 
     // Seek five characters backwards.
     {
-        auto current_offset = buffered_file->seek(-5, Core::Stream::SeekMode::FromCurrentPosition).release_value();
+        auto current_offset = buffered_file->seek(-5, SeekMode::FromCurrentPosition).release_value();
         EXPECT_EQ(current_offset, 5ul);
     }
 
@@ -527,7 +527,7 @@ TEST_CASE(buffered_file_tell_and_seek)
 
     // Seek back to the beginning.
     {
-        auto current_offset = buffered_file->seek(0, Core::Stream::SeekMode::SetPosition).release_value();
+        auto current_offset = buffered_file->seek(0, SeekMode::SetPosition).release_value();
         EXPECT_EQ(current_offset, 0ul);
     }
 
@@ -541,7 +541,7 @@ TEST_CASE(buffered_file_tell_and_seek)
 
     // Seek beyond the buffer size, which should invalidate the buffer.
     {
-        auto current_offset = buffered_file->seek(12, Core::Stream::SeekMode::SetPosition).release_value();
+        auto current_offset = buffered_file->seek(12, SeekMode::SetPosition).release_value();
         EXPECT_EQ(current_offset, 12ul);
     }
 
@@ -697,7 +697,7 @@ TEST_CASE(allocating_memory_stream_10kb)
 
     EXPECT_EQ(stream.used_buffer_size(), file_size);
 
-    MUST(file->seek(0, Core::Stream::SeekMode::SetPosition));
+    MUST(file->seek(0, SeekMode::SetPosition));
 
     // Check the stream contents when reading back.
     size_t offset = 0;
@@ -727,8 +727,8 @@ TEST_CASE(little_endian_bit_stream_input_output_match)
 
     // Note: The bit stream only ever reads from/writes to the underlying stream in one byte chunks,
     // so testing with sizes that will not trigger a write will yield unexpected results.
-    auto bit_write_stream = MUST(Core::Stream::LittleEndianOutputBitStream::construct(MaybeOwned<Core::Stream::Stream>(*memory_stream)));
-    auto bit_read_stream = MUST(Core::Stream::LittleEndianInputBitStream::construct(MaybeOwned<Core::Stream::Stream>(*memory_stream)));
+    auto bit_write_stream = MUST(Core::Stream::LittleEndianOutputBitStream::construct(MaybeOwned<AK::Stream>(*memory_stream)));
+    auto bit_read_stream = MUST(Core::Stream::LittleEndianInputBitStream::construct(MaybeOwned<AK::Stream>(*memory_stream)));
 
     // Test two mirrored chunks of a fully mirrored pattern to check that we are not dropping bits.
     {
@@ -783,8 +783,8 @@ TEST_CASE(big_endian_bit_stream_input_output_match)
 
     // Note: The bit stream only ever reads from/writes to the underlying stream in one byte chunks,
     // so testing with sizes that will not trigger a write will yield unexpected results.
-    auto bit_write_stream = MUST(Core::Stream::BigEndianOutputBitStream::construct(MaybeOwned<Core::Stream::Stream>(*memory_stream)));
-    auto bit_read_stream = MUST(Core::Stream::BigEndianInputBitStream::construct(MaybeOwned<Core::Stream::Stream>(*memory_stream)));
+    auto bit_write_stream = MUST(Core::Stream::BigEndianOutputBitStream::construct(MaybeOwned<AK::Stream>(*memory_stream)));
+    auto bit_read_stream = MUST(Core::Stream::BigEndianInputBitStream::construct(MaybeOwned<AK::Stream>(*memory_stream)));
 
     // Test two mirrored chunks of a fully mirrored pattern to check that we are not dropping bits.
     {

Userland/Applets/ResourceGraph/main.cpp

@@ -148,7 +148,7 @@ private:
     {
         if (file) {
             // Seeking to the beginning causes a data refresh!
-            TRY(file->seek(0, Core::Stream::SeekMode::SetPosition));
+            TRY(file->seek(0, SeekMode::SetPosition));
         } else {
             file = TRY(Core::Stream::File::open(filename, Core::Stream::OpenMode::Read));
         }

Userland/Applications/HexEditor/HexDocument.cpp

@@ -64,7 +64,7 @@ bool HexDocumentMemory::write_to_file(NonnullRefPtr<Core::File> file)
     if (!file->write(m_buffer.data(), m_buffer.size()))
         return false;
     for (auto& change : m_changes) {
-        file->seek(change.key, Core::SeekMode::SetPosition);
+        file->seek(change.key, SeekMode::SetPosition);
         file->write(&change.value, 1);
     }
     return true;
@@ -79,7 +79,7 @@ HexDocumentFile::HexDocumentFile(NonnullRefPtr<Core::File> file)
 void HexDocumentFile::write_to_file()
 {
     for (auto& change : m_changes) {
-        m_file->seek(change.key, Core::SeekMode::SetPosition);
+        m_file->seek(change.key, SeekMode::SetPosition);
         m_file->write(&change.value, 1);
     }
     clear_changes();
@@ -105,7 +105,7 @@ bool HexDocumentFile::write_to_file(NonnullRefPtr<Core::File> file)
     }
 
     for (auto& change : m_changes) {
-        file->seek(change.key, Core::SeekMode::SetPosition);
+        file->seek(change.key, SeekMode::SetPosition);
         file->write(&change.value, 1);
     }
 
@@ -149,12 +149,12 @@ void HexDocumentFile::set_file(NonnullRefPtr<Core::File> file)
     m_file = file;
 
     off_t size = 0;
-    if (!file->seek(0, Core::SeekMode::FromEndPosition, &size)) {
+    if (!file->seek(0, SeekMode::FromEndPosition, &size)) {
         m_file_size = 0;
     } else {
         m_file_size = size;
     }
-    file->seek(0, Core::SeekMode::SetPosition);
+    file->seek(0, SeekMode::SetPosition);
 
     clear_changes();
     // make sure the next get operation triggers a read
@@ -169,7 +169,7 @@ NonnullRefPtr<Core::File> HexDocumentFile::file() const
 void HexDocumentFile::ensure_position_in_buffer(size_t position)
 {
     if (position < m_buffer_file_pos || position >= m_buffer_file_pos + m_buffer.size()) {
-        m_file->seek(position, Core::SeekMode::SetPosition);
+        m_file->seek(position, SeekMode::SetPosition);
         m_file->read(m_buffer.data(), m_buffer.size());
         m_buffer_file_pos = position;
     }

Userland/Applications/PixelPaint/Image.cpp

@@ -172,7 +172,7 @@ RefPtr<Gfx::Bitmap> Image::copy_bitmap(Selection const& selection) const
     return cropped_bitmap_or_error.release_value_but_fixme_should_propagate_errors();
 }
 
-ErrorOr<void> Image::export_bmp_to_file(NonnullOwnPtr<Core::Stream::Stream> stream, bool preserve_alpha_channel) const
+ErrorOr<void> Image::export_bmp_to_file(NonnullOwnPtr<AK::Stream> stream, bool preserve_alpha_channel) const
 {
     auto bitmap_format = preserve_alpha_channel ? Gfx::BitmapFormat::BGRA8888 : Gfx::BitmapFormat::BGRx8888;
     auto bitmap = TRY(compose_bitmap(bitmap_format));
@@ -183,7 +183,7 @@ ErrorOr<void> Image::export_bmp_to_file(NonnullOwnPtr<Core::Stream::Stream> stre
     return {};
 }
 
-ErrorOr<void> Image::export_png_to_file(NonnullOwnPtr<Core::Stream::Stream> stream, bool preserve_alpha_channel) const
+ErrorOr<void> Image::export_png_to_file(NonnullOwnPtr<AK::Stream> stream, bool preserve_alpha_channel) const
 {
     auto bitmap_format = preserve_alpha_channel ? Gfx::BitmapFormat::BGRA8888 : Gfx::BitmapFormat::BGRx8888;
     auto bitmap = TRY(compose_bitmap(bitmap_format));
@@ -193,7 +193,7 @@ ErrorOr<void> Image::export_png_to_file(NonnullOwnPtr<Core::Stream::Stream> stre
     return {};
 }
 
-ErrorOr<void> Image::export_qoi_to_file(NonnullOwnPtr<Core::Stream::Stream> stream) const
+ErrorOr<void> Image::export_qoi_to_file(NonnullOwnPtr<AK::Stream> stream) const
 {
     auto bitmap = TRY(compose_bitmap(Gfx::BitmapFormat::BGRA8888));
 

Userland/Applications/PixelPaint/Image.h

@@ -72,9 +72,9 @@ public:
     void paint_into(GUI::Painter&, Gfx::IntRect const& dest_rect) const;
 
     ErrorOr<void> serialize_as_json(JsonObjectSerializer<StringBuilder>& json) const;
-    ErrorOr<void> export_bmp_to_file(NonnullOwnPtr<Core::Stream::Stream>, bool preserve_alpha_channel) const;
-    ErrorOr<void> export_png_to_file(NonnullOwnPtr<Core::Stream::Stream>, bool preserve_alpha_channel) const;
-    ErrorOr<void> export_qoi_to_file(NonnullOwnPtr<Core::Stream::Stream>) const;
+    ErrorOr<void> export_bmp_to_file(NonnullOwnPtr<AK::Stream>, bool preserve_alpha_channel) const;
+    ErrorOr<void> export_png_to_file(NonnullOwnPtr<AK::Stream>, bool preserve_alpha_channel) const;
+    ErrorOr<void> export_qoi_to_file(NonnullOwnPtr<AK::Stream>) const;
 
     void move_layer_to_front(Layer&);
     void move_layer_to_back(Layer&);

Userland/Applications/Spreadsheet/ExportDialog.cpp

@@ -88,7 +88,7 @@ CSVExportDialogPage::CSVExportDialogPage(Sheet const& sheet)
     update_preview();
 }
 
-auto CSVExportDialogPage::generate(Core::Stream::Stream& stream, GenerationType type) -> ErrorOr<void>
+auto CSVExportDialogPage::generate(AK::Stream& stream, GenerationType type) -> ErrorOr<void>
 {
     auto delimiter = TRY([this]() -> ErrorOr<DeprecatedString> {
         if (m_delimiter_other_radio->is_checked()) {

Userland/Applications/Spreadsheet/ExportDialog.h

@@ -27,7 +27,7 @@ struct CSVExportDialogPage {
         Preview
     };
 
-    ErrorOr<void> generate(Core::Stream::Stream&, GenerationType);
+    ErrorOr<void> generate(AK::Stream&, GenerationType);
 
 protected:
     void update_preview();

Userland/Applications/Spreadsheet/Writers/CSV.h

@@ -15,13 +15,13 @@ namespace Writer {
 class CSV {
 public:
     template<typename ContainerType>
-    static ErrorOr<void> generate(Core::Stream::Stream& output, ContainerType const& data, Vector<StringView> headers = {}, WriterBehavior behaviors = default_behaviors())
+    static ErrorOr<void> generate(AK::Stream& output, ContainerType const& data, Vector<StringView> headers = {}, WriterBehavior behaviors = default_behaviors())
     {
         return XSV<ContainerType>::generate(output, data, { ",", "\"", WriterTraits::Repeat }, move(headers), behaviors);
     }
 
     template<typename ContainerType>
-    static ErrorOr<void> generate_preview(Core::Stream::Stream& output, ContainerType const& data, Vector<StringView> headers = {}, WriterBehavior behaviors = default_behaviors())
+    static ErrorOr<void> generate_preview(AK::Stream& output, ContainerType const& data, Vector<StringView> headers = {}, WriterBehavior behaviors = default_behaviors())
     {
         return XSV<ContainerType>::generate_preview(output, data, { ",", "\"", WriterTraits::Repeat }, move(headers), behaviors);
     }

Userland/Applications/Spreadsheet/Writers/XSV.h

@@ -42,7 +42,7 @@ constexpr WriterBehavior default_behaviors()
 template<typename ContainerType, typename HeaderType = Vector<StringView>>
 class XSV {
 public:
-    static ErrorOr<void> generate(Core::Stream::Stream& output, ContainerType const& data, WriterTraits traits, HeaderType headers = {}, WriterBehavior behaviors = default_behaviors())
+    static ErrorOr<void> generate(AK::Stream& output, ContainerType const& data, WriterTraits traits, HeaderType headers = {}, WriterBehavior behaviors = default_behaviors())
     {
         auto writer = XSV(output, data, traits, headers, behaviors);
         auto with_headers = has_flag(writer.m_behaviors, WriterBehavior::WriteHeaders);
@@ -63,7 +63,7 @@ public:
         return {};
     }
 
-    static ErrorOr<void> generate_preview(Core::Stream::Stream& output, ContainerType const& data, WriterTraits traits, HeaderType headers = {}, WriterBehavior behaviors = default_behaviors())
+    static ErrorOr<void> generate_preview(AK::Stream& output, ContainerType const& data, WriterTraits traits, HeaderType headers = {}, WriterBehavior behaviors = default_behaviors())
     {
         auto writer = XSV(output, data, traits, headers, behaviors);
         auto lines_written = 0;
@@ -93,7 +93,7 @@ public:
     }
 
 private:
-    XSV(Core::Stream::Stream& output, ContainerType const& data, WriterTraits traits, HeaderType headers = {}, WriterBehavior behaviors = default_behaviors())
+    XSV(AK::Stream& output, ContainerType const& data, WriterTraits traits, HeaderType headers = {}, WriterBehavior behaviors = default_behaviors())
         : m_data(data)
         , m_traits(move(traits))
         , m_behaviors(behaviors)
@@ -170,7 +170,7 @@ private:
     WriterTraits m_traits;
     WriterBehavior m_behaviors;
     HeaderType m_names;
-    Core::Stream::Stream& m_output;
+    AK::Stream& m_output;
 };
 
 }

Userland/DevTools/UserspaceEmulator/Emulator.cpp

@@ -500,7 +500,7 @@ void Emulator::dump_backtrace()
     dump_backtrace(raw_backtrace());
 }
 
-void Emulator::emit_profile_sample(Core::Stream::Stream& output)
+void Emulator::emit_profile_sample(AK::Stream& output)
 {
     if (!is_in_region_of_interest())
         return;
@@ -513,7 +513,7 @@ void Emulator::emit_profile_sample(Core::Stream::Stream& output)
     output.write_entire_buffer(builder.string_view().bytes()).release_value_but_fixme_should_propagate_errors();
 }
 
-void Emulator::emit_profile_event(Core::Stream::Stream& output, StringView event_name, DeprecatedString const& contents)
+void Emulator::emit_profile_event(AK::Stream& output, StringView event_name, DeprecatedString const& contents)
 {
     StringBuilder builder;
     timeval tv {};

Userland/DevTools/UserspaceEmulator/Emulator.h

@@ -32,7 +32,7 @@ public:
 
     Emulator(DeprecatedString const& executable_path, Vector<StringView> const& arguments, Vector<DeprecatedString> const& environment);
 
-    void set_profiling_details(bool should_dump_profile, size_t instruction_interval, Core::Stream::Stream* profile_stream, NonnullOwnPtrVector<DeprecatedString>* profiler_strings, Vector<int>* profiler_string_id_map)
+    void set_profiling_details(bool should_dump_profile, size_t instruction_interval, AK::Stream* profile_stream, NonnullOwnPtrVector<DeprecatedString>* profiler_strings, Vector<int>* profiler_string_id_map)
     {
         m_is_profiling = should_dump_profile;
         m_profile_instruction_interval = instruction_interval;
@@ -46,7 +46,7 @@ public:
         m_is_in_region_of_interest = value;
     }
 
-    Core::Stream::Stream& profile_stream() { return *m_profile_stream; }
+    AK::Stream& profile_stream() { return *m_profile_stream; }
     NonnullOwnPtrVector<DeprecatedString>& profiler_strings() { return *m_profiler_strings; }
     Vector<int>& profiler_string_id_map() { return *m_profiler_string_id_map; }
 
@@ -139,8 +139,8 @@ private:
 
     void send_signal(int);
 
-    void emit_profile_sample(Core::Stream::Stream&);
-    void emit_profile_event(Core::Stream::Stream&, StringView event_name, DeprecatedString const& contents);
+    void emit_profile_sample(AK::Stream&);
+    void emit_profile_event(AK::Stream&, StringView event_name, DeprecatedString const& contents);
 
     int virt$accept4(FlatPtr);
     u32 virt$allocate_tls(FlatPtr, size_t);
@@ -295,7 +295,7 @@ private:
 
     RangeAllocator m_range_allocator;
 
-    Core::Stream::Stream* m_profile_stream { nullptr };
+    AK::Stream* m_profile_stream { nullptr };
     Vector<int>* m_profiler_string_id_map { nullptr };
     NonnullOwnPtrVector<DeprecatedString>* m_profiler_strings { nullptr };
 

Userland/DevTools/UserspaceEmulator/main.cpp

@@ -57,7 +57,7 @@ int main(int argc, char** argv, char** env)
     if (dump_profile && profile_dump_path.is_empty())
         profile_dump_path = DeprecatedString::formatted("{}.{}.profile", LexicalPath(executable_path).basename(), getpid());
 
-    OwnPtr<Core::Stream::Stream> profile_stream;
+    OwnPtr<AK::Stream> profile_stream;
     OwnPtr<NonnullOwnPtrVector<DeprecatedString>> profile_strings;
     OwnPtr<Vector<int>> profile_string_id_map;
 

Userland/Libraries/LibArchive/TarStream.cpp

@@ -51,7 +51,7 @@ ErrorOr<size_t> TarFileStream::write(ReadonlyBytes)
     return Error::from_errno(EBADF);
 }
 
-ErrorOr<NonnullOwnPtr<TarInputStream>> TarInputStream::construct(NonnullOwnPtr<Core::Stream::Stream> stream)
+ErrorOr<NonnullOwnPtr<TarInputStream>> TarInputStream::construct(NonnullOwnPtr<AK::Stream> stream)
 {
     auto tar_stream = TRY(adopt_nonnull_own_or_enomem(new (nothrow) TarInputStream(move(stream))));
 
@@ -60,7 +60,7 @@ ErrorOr<NonnullOwnPtr<TarInputStream>> TarInputStream::construct(NonnullOwnPtr<C
     return tar_stream;
 }
 
-TarInputStream::TarInputStream(NonnullOwnPtr<Core::Stream::Stream> stream)
+TarInputStream::TarInputStream(NonnullOwnPtr<AK::Stream> stream)
     : m_stream(move(stream))
 {
 }
@@ -136,7 +136,7 @@ TarFileStream TarInputStream::file_contents()
     return TarFileStream(*this);
 }
 
-TarOutputStream::TarOutputStream(MaybeOwned<Core::Stream::Stream> stream)
+TarOutputStream::TarOutputStream(MaybeOwned<AK::Stream> stream)
     : m_stream(move(stream))
 {
 }

Userland/Libraries/LibArchive/TarStream.h

@@ -16,7 +16,7 @@ namespace Archive {
 
 class TarInputStream;
 
-class TarFileStream : public Core::Stream::Stream {
+class TarFileStream : public AK::Stream {
 public:
     virtual ErrorOr<Bytes> read(Bytes) override;
     virtual ErrorOr<size_t> write(ReadonlyBytes) override;
@@ -34,7 +34,7 @@ private:
 
 class TarInputStream {
 public:
-    static ErrorOr<NonnullOwnPtr<TarInputStream>> construct(NonnullOwnPtr<Core::Stream::Stream>);
+    static ErrorOr<NonnullOwnPtr<TarInputStream>> construct(NonnullOwnPtr<AK::Stream>);
     ErrorOr<void> advance();
     bool finished() const { return m_found_end_of_archive || m_stream->is_eof(); }
     ErrorOr<bool> valid() const;
@@ -45,11 +45,11 @@ public:
     ErrorOr<void> for_each_extended_header(F func);
 
 private:
-    TarInputStream(NonnullOwnPtr<Core::Stream::Stream>);
+    TarInputStream(NonnullOwnPtr<AK::Stream>);
     ErrorOr<void> load_next_header();
 
     TarFileHeader m_header;
-    NonnullOwnPtr<Core::Stream::Stream> m_stream;
+    NonnullOwnPtr<AK::Stream> m_stream;
     unsigned long m_file_offset { 0 };
     int m_generation { 0 };
     bool m_found_end_of_archive { false };
@@ -59,14 +59,14 @@ private:
 
 class TarOutputStream {
 public:
-    TarOutputStream(MaybeOwned<Core::Stream::Stream>);
+    TarOutputStream(MaybeOwned<AK::Stream>);
     ErrorOr<void> add_file(StringView path, mode_t, ReadonlyBytes);
     ErrorOr<void> add_link(StringView path, mode_t, StringView);
     ErrorOr<void> add_directory(StringView path, mode_t);
     ErrorOr<void> finish();
 
 private:
-    MaybeOwned<Core::Stream::Stream> m_stream;
+    MaybeOwned<AK::Stream> m_stream;
     bool m_finished { false };
 
     friend class TarFileStream;

Userland/Libraries/LibArchive/Zip.cpp

@@ -100,7 +100,7 @@ ErrorOr<bool> Zip::for_each_member(Function<IterationDecision(ZipMember const&)>
     return true;
 }
 
-ZipOutputStream::ZipOutputStream(NonnullOwnPtr<Core::Stream::Stream> stream)
+ZipOutputStream::ZipOutputStream(NonnullOwnPtr<AK::Stream> stream)
     : m_stream(move(stream))
 {
 }

Userland/Libraries/LibArchive/Zip.h

@@ -55,7 +55,7 @@ struct [[gnu::packed]] EndOfCentralDirectory {
         return true;
     }
 
-    ErrorOr<void> write(Core::Stream::Stream& stream) const
+    ErrorOr<void> write(AK::Stream& stream) const
     {
         auto write_value = [&stream](auto value) {
             return stream.write_entire_buffer({ &value, sizeof(value) });
@@ -141,7 +141,7 @@ struct [[gnu::packed]] CentralDirectoryRecord {
         return true;
     }
 
-    ErrorOr<void> write(Core::Stream::Stream& stream) const
+    ErrorOr<void> write(AK::Stream& stream) const
     {
         auto write_value = [&stream](auto value) {
             return stream.write_entire_buffer({ &value, sizeof(value) });
@@ -210,7 +210,7 @@ struct [[gnu::packed]] LocalFileHeader {
         return true;
     }
 
-    ErrorOr<void> write(Core::Stream::Stream& stream) const
+    ErrorOr<void> write(AK::Stream& stream) const
     {
         auto write_value = [&stream](auto value) {
             return stream.write_entire_buffer({ &value, sizeof(value) });
@@ -267,13 +267,13 @@ private:
 
 class ZipOutputStream {
 public:
-    ZipOutputStream(NonnullOwnPtr<Core::Stream::Stream>);
+    ZipOutputStream(NonnullOwnPtr<AK::Stream>);
 
     ErrorOr<void> add_member(ZipMember const&);
     ErrorOr<void> finish();
 
 private:
-    NonnullOwnPtr<Core::Stream::Stream> m_stream;
+    NonnullOwnPtr<AK::Stream> m_stream;
     Vector<ZipMember> m_members;
 
     bool m_finished { false };

Userland/Libraries/LibAudio/FlacLoader.cpp

@@ -25,7 +25,7 @@
 
 namespace Audio {
 
-FlacLoaderPlugin::FlacLoaderPlugin(NonnullOwnPtr<Core::Stream::SeekableStream> stream)
+FlacLoaderPlugin::FlacLoaderPlugin(NonnullOwnPtr<SeekableStream> stream)
     : LoaderPlugin(move(stream))
 {
 }
@@ -60,7 +60,7 @@ MaybeLoaderError FlacLoaderPlugin::initialize()
 // 11.5 STREAM
 MaybeLoaderError FlacLoaderPlugin::parse_header()
 {
-    auto bit_input = LOADER_TRY(BigEndianInputBitStream::construct(MaybeOwned<Core::Stream::Stream>(*m_stream)));
+    auto bit_input = LOADER_TRY(BigEndianInputBitStream::construct(MaybeOwned<AK::Stream>(*m_stream)));
 
     // A mixture of VERIFY and the non-crashing TRY().
 #define FLAC_VERIFY(check, category, msg)                                                                                                     \
@@ -79,7 +79,7 @@ MaybeLoaderError FlacLoaderPlugin::parse_header()
     auto streaminfo = TRY(next_meta_block(*bit_input));
     FLAC_VERIFY(streaminfo.type == FlacMetadataBlockType::STREAMINFO, LoaderError::Category::Format, "First block must be STREAMINFO");
     auto streaminfo_data_memory = LOADER_TRY(Core::Stream::FixedMemoryStream::construct(streaminfo.data.bytes()));
-    auto streaminfo_data = LOADER_TRY(BigEndianInputBitStream::construct(MaybeOwned<Core::Stream::Stream>(*streaminfo_data_memory)));
+    auto streaminfo_data = LOADER_TRY(BigEndianInputBitStream::construct(MaybeOwned<AK::Stream>(*streaminfo_data_memory)));
 
     // 11.10 METADATA_BLOCK_STREAMINFO
     m_min_block_size = LOADER_TRY(streaminfo_data->read_bits<u16>(16));
@@ -150,7 +150,7 @@ MaybeLoaderError FlacLoaderPlugin::parse_header()
 MaybeLoaderError FlacLoaderPlugin::load_picture(FlacRawMetadataBlock& block)
 {
     auto memory_stream = LOADER_TRY(Core::Stream::FixedMemoryStream::construct(block.data.bytes()));
-    auto picture_block_bytes = LOADER_TRY(BigEndianInputBitStream::construct(MaybeOwned<Core::Stream::Stream>(*memory_stream)));
+    auto picture_block_bytes = LOADER_TRY(BigEndianInputBitStream::construct(MaybeOwned<AK::Stream>(*memory_stream)));
 
     PictureData picture {};
 
@@ -159,12 +159,12 @@ MaybeLoaderError FlacLoaderPlugin::load_picture(FlacRawMetadataBlock& block)
     auto const mime_string_length = LOADER_TRY(picture_block_bytes->read_bits(32));
     // Note: We are seeking before reading the value to ensure that we stayed inside buffer's size.
     auto offset_before_seeking = memory_stream->offset();
-    LOADER_TRY(memory_stream->seek(mime_string_length, Core::Stream::SeekMode::FromCurrentPosition));
+    LOADER_TRY(memory_stream->seek(mime_string_length, SeekMode::FromCurrentPosition));
     picture.mime_string = { block.data.bytes().data() + offset_before_seeking, (size_t)mime_string_length };
 
     auto const description_string_length = LOADER_TRY(picture_block_bytes->read_bits(32));
     offset_before_seeking = memory_stream->offset();
-    LOADER_TRY(memory_stream->seek(description_string_length, Core::Stream::SeekMode::FromCurrentPosition));
+    LOADER_TRY(memory_stream->seek(description_string_length, SeekMode::FromCurrentPosition));
     picture.description_string = Vector<u32> { Span<u32> { reinterpret_cast<u32*>(block.data.bytes().data() + offset_before_seeking), (size_t)description_string_length } };
 
     picture.width = LOADER_TRY(picture_block_bytes->read_bits(32));
@@ -175,7 +175,7 @@ MaybeLoaderError FlacLoaderPlugin::load_picture(FlacRawMetadataBlock& block)
 
     auto const picture_size = LOADER_TRY(picture_block_bytes->read_bits(32));
     offset_before_seeking = memory_stream->offset();
-    LOADER_TRY(memory_stream->seek(picture_size, Core::Stream::SeekMode::FromCurrentPosition));
+    LOADER_TRY(memory_stream->seek(picture_size, SeekMode::FromCurrentPosition));
     picture.data = Vector<u8> { Span<u8> { block.data.bytes().data() + offset_before_seeking, (size_t)picture_size } };
 
     m_pictures.append(move(picture));
@@ -187,7 +187,7 @@ MaybeLoaderError FlacLoaderPlugin::load_picture(FlacRawMetadataBlock& block)
 MaybeLoaderError FlacLoaderPlugin::load_seektable(FlacRawMetadataBlock& block)
 {
     auto memory_stream = LOADER_TRY(Core::Stream::FixedMemoryStream::construct(block.data.bytes()));
-    auto seektable_bytes = LOADER_TRY(BigEndianInputBitStream::construct(MaybeOwned<Core::Stream::Stream>(*memory_stream)));
+    auto seektable_bytes = LOADER_TRY(BigEndianInputBitStream::construct(MaybeOwned<AK::Stream>(*memory_stream)));
     for (size_t i = 0; i < block.length / 18; ++i) {
         // 11.14. SEEKPOINT
         FlacSeekPoint seekpoint {
@@ -259,7 +259,7 @@ MaybeLoaderError FlacLoaderPlugin::seek(int int_sample_index)
     // No seektable or no fitting entry: Perform normal forward read
     if (!maybe_target_seekpoint.has_value()) {
         if (sample_index < m_loaded_samples) {
-            LOADER_TRY(m_stream->seek(m_data_start_location, Core::Stream::SeekMode::SetPosition));
+            LOADER_TRY(m_stream->seek(m_data_start_location, SeekMode::SetPosition));
             m_loaded_samples = 0;
         }
         auto to_read = sample_index - m_loaded_samples;
@@ -279,7 +279,7 @@ MaybeLoaderError FlacLoaderPlugin::seek(int int_sample_index)
 
         dbgln_if(AFLACLOADER_DEBUG, "Seeking to seektable: sample index {}, byte offset {}, sample count {}", target_seekpoint.sample_index, target_seekpoint.byte_offset, target_seekpoint.num_samples);
         auto position = target_seekpoint.byte_offset + m_data_start_location;
-        if (m_stream->seek(static_cast<i64>(position), Core::Stream::SeekMode::SetPosition).is_error())
+        if (m_stream->seek(static_cast<i64>(position), SeekMode::SetPosition).is_error())
             return LoaderError { LoaderError::Category::IO, m_loaded_samples, DeprecatedString::formatted("Invalid seek position {}", position) };
 
         auto remaining_samples_after_seekpoint = sample_index - m_data_start_location;
@@ -333,7 +333,7 @@ MaybeLoaderError FlacLoaderPlugin::next_frame(Span<Sample> target_vector)
         }                                                                                                                                         \
     } while (0)
 
-    auto bit_stream = LOADER_TRY(BigEndianInputBitStream::construct(MaybeOwned<Core::Stream::Stream>(*m_stream)));
+    auto bit_stream = LOADER_TRY(BigEndianInputBitStream::construct(MaybeOwned<AK::Stream>(*m_stream)));
 
     // TODO: Check the CRC-16 checksum (and others) by keeping track of read data
 

Userland/Libraries/LibAudio/FlacLoader.h

@@ -47,7 +47,7 @@ ALWAYS_INLINE ErrorOr<i32> decode_unsigned_exp_golomb(u8 order, BigEndianInputBi
 //      https://datatracker.ietf.org/doc/html/draft-ietf-cellar-flac-03 (newer IETF draft that uses incompatible numberings and names)
 class FlacLoaderPlugin : public LoaderPlugin {
 public:
-    explicit FlacLoaderPlugin(NonnullOwnPtr<Core::Stream::SeekableStream> stream);
+    explicit FlacLoaderPlugin(NonnullOwnPtr<SeekableStream> stream);
     virtual ~FlacLoaderPlugin() override = default;
 
     static Result<NonnullOwnPtr<FlacLoaderPlugin>, LoaderError> create(StringView path);

Userland/Libraries/LibAudio/Loader.cpp

@@ -11,7 +11,7 @@
 
 namespace Audio {
 
-LoaderPlugin::LoaderPlugin(NonnullOwnPtr<Core::Stream::SeekableStream> stream)
+LoaderPlugin::LoaderPlugin(NonnullOwnPtr<SeekableStream> stream)
     : m_stream(move(stream))
 {
 }

Userland/Libraries/LibAudio/Loader.h

@@ -30,7 +30,7 @@ using MaybeLoaderError = Result<void, LoaderError>;
 
 class LoaderPlugin {
 public:
-    explicit LoaderPlugin(NonnullOwnPtr<Core::Stream::SeekableStream> stream);
+    explicit LoaderPlugin(NonnullOwnPtr<SeekableStream> stream);
     virtual ~LoaderPlugin() = default;
 
     virtual LoaderSamples get_more_samples(size_t max_bytes_to_read_from_input = 128 * KiB) = 0;
@@ -58,7 +58,7 @@ public:
     Vector<PictureData> const& pictures() const { return m_pictures; };
 
 protected:
-    NonnullOwnPtr<Core::Stream::SeekableStream> m_stream;
+    NonnullOwnPtr<SeekableStream> m_stream;
 
     Vector<PictureData> m_pictures;
 };

Userland/Libraries/LibAudio/MP3Loader.cpp

@@ -14,7 +14,7 @@ namespace Audio {
 DSP::MDCT<12> MP3LoaderPlugin::s_mdct_12;
 DSP::MDCT<36> MP3LoaderPlugin::s_mdct_36;
 
-MP3LoaderPlugin::MP3LoaderPlugin(NonnullOwnPtr<Core::Stream::SeekableStream> stream)
+MP3LoaderPlugin::MP3LoaderPlugin(NonnullOwnPtr<SeekableStream> stream)
     : LoaderPlugin(move(stream))
 {
 }
@@ -41,7 +41,7 @@ Result<NonnullOwnPtr<MP3LoaderPlugin>, LoaderError> MP3LoaderPlugin::create(Byte
 
 MaybeLoaderError MP3LoaderPlugin::initialize()
 {
-    m_bitstream = LOADER_TRY(Core::Stream::BigEndianInputBitStream::construct(MaybeOwned<Core::Stream::Stream>(*m_stream)));
+    m_bitstream = LOADER_TRY(Core::Stream::BigEndianInputBitStream::construct(MaybeOwned<AK::Stream>(*m_stream)));
 
     TRY(synchronize());
 
@@ -55,7 +55,7 @@ MaybeLoaderError MP3LoaderPlugin::initialize()
 
     TRY(build_seek_table());
 
-    LOADER_TRY(m_stream->seek(0, Core::Stream::SeekMode::SetPosition));
+    LOADER_TRY(m_stream->seek(0, SeekMode::SetPosition));
 
     return {};
 }
@@ -76,7 +76,7 @@ MaybeLoaderError MP3LoaderPlugin::seek(int const position)
 {
     for (auto const& seek_entry : m_seek_table) {
         if (seek_entry.get<1>() >= position) {
-            LOADER_TRY(m_stream->seek(seek_entry.get<0>(), Core::Stream::SeekMode::SetPosition));
+            LOADER_TRY(m_stream->seek(seek_entry.get<0>(), SeekMode::SetPosition));
             m_loaded_samples = seek_entry.get<1>();
             break;
         }
@@ -140,7 +140,7 @@ MaybeLoaderError MP3LoaderPlugin::build_seek_table()
     m_bitstream->align_to_byte_boundary();
 
     while (!synchronize().is_error()) {
-        auto const frame_pos = -2 + LOADER_TRY(m_stream->seek(0, Core::Stream::SeekMode::FromCurrentPosition));
+        auto const frame_pos = -2 + LOADER_TRY(m_stream->seek(0, SeekMode::FromCurrentPosition));
 
         auto error_or_header = read_header();
         if (error_or_header.is_error() || error_or_header.value().id != 1 || error_or_header.value().layer != 3) {
@@ -152,7 +152,7 @@ MaybeLoaderError MP3LoaderPlugin::build_seek_table()
         if (frame_count % 10 == 0)
             m_seek_table.append({ frame_pos, sample_count });
 
-        LOADER_TRY(m_stream->seek(error_or_header.value().frame_size - 6, Core::Stream::SeekMode::FromCurrentPosition));
+        LOADER_TRY(m_stream->seek(error_or_header.value().frame_size - 6, SeekMode::FromCurrentPosition));
 
         // TODO: This is just here to clear the bitstream buffer.
         // Bitstream should have a method to sync its state to the underlying stream.
@@ -242,7 +242,7 @@ ErrorOr<MP3::MP3Frame, LoaderError> MP3LoaderPlugin::read_frame_data(MP3::Header
 
     TRY(m_bit_reservoir.discard(old_reservoir_size - frame.main_data_begin));
 
-    auto reservoir_stream = TRY(Core::Stream::BigEndianInputBitStream::construct(MaybeOwned<Core::Stream::Stream>(m_bit_reservoir)));
+    auto reservoir_stream = TRY(Core::Stream::BigEndianInputBitStream::construct(MaybeOwned<AK::Stream>(m_bit_reservoir)));
 
     for (size_t granule_index = 0; granule_index < 2; granule_index++) {
         for (size_t channel_index = 0; channel_index < header.channel_count(); channel_index++) {

Userland/Libraries/LibAudio/MP3Loader.h

@@ -22,7 +22,7 @@ struct ScaleFactorBand;
 
 class MP3LoaderPlugin : public LoaderPlugin {
 public:
-    explicit MP3LoaderPlugin(NonnullOwnPtr<Core::Stream::SeekableStream> stream);
+    explicit MP3LoaderPlugin(NonnullOwnPtr<SeekableStream> stream);
     virtual ~MP3LoaderPlugin() = default;
 
     static Result<NonnullOwnPtr<MP3LoaderPlugin>, LoaderError> create(StringView path);

Userland/Libraries/LibAudio/WavLoader.cpp

@@ -18,7 +18,7 @@ namespace Audio {
 
 static constexpr size_t const maximum_wav_size = 1 * GiB; // FIXME: is there a more appropriate size limit?
 
-WavLoaderPlugin::WavLoaderPlugin(NonnullOwnPtr<Core::Stream::SeekableStream> stream)
+WavLoaderPlugin::WavLoaderPlugin(NonnullOwnPtr<SeekableStream> stream)
     : LoaderPlugin(move(stream))
 {
 }
@@ -51,7 +51,7 @@ MaybeLoaderError WavLoaderPlugin::initialize()
 }
 
 template<typename SampleReader>
-MaybeLoaderError WavLoaderPlugin::read_samples_from_stream(Core::Stream::Stream& stream, SampleReader read_sample, FixedArray<Sample>& samples) const
+MaybeLoaderError WavLoaderPlugin::read_samples_from_stream(AK::Stream& stream, SampleReader read_sample, FixedArray<Sample>& samples) const
 {
     switch (m_num_channels) {
     case 1:
@@ -72,7 +72,7 @@ MaybeLoaderError WavLoaderPlugin::read_samples_from_stream(Core::Stream::Stream&
 }
 
 // There's no i24 type + we need to do the endianness conversion manually anyways.
-static ErrorOr<double> read_sample_int24(Core::Stream::Stream& stream)
+static ErrorOr<double> read_sample_int24(AK::Stream& stream)
 {
     u8 byte = 0;
     TRY(stream.read(Bytes { &byte, 1 }));
@@ -93,7 +93,7 @@ static ErrorOr<double> read_sample_int24(Core::Stream::Stream& stream)
 }
 
 template<typename T>
-static ErrorOr<double> read_sample(Core::Stream::Stream& stream)
+static ErrorOr<double> read_sample(AK::Stream& stream)
 {
     T sample { 0 };
     TRY(stream.read(Bytes { &sample, sizeof(T) }));
@@ -177,7 +177,7 @@ MaybeLoaderError WavLoaderPlugin::seek(int sample_index)
 
     size_t sample_offset = m_byte_offset_of_data_samples + static_cast<size_t>(sample_index * m_num_channels * (pcm_bits_per_sample(m_sample_format) / 8));
 
-    LOADER_TRY(m_stream->seek(sample_offset, Core::Stream::SeekMode::SetPosition));
+    LOADER_TRY(m_stream->seek(sample_offset, SeekMode::SetPosition));
 
     m_loaded_samples = sample_index;
     return {};

Userland/Libraries/LibAudio/WavLoader.h

@@ -29,7 +29,7 @@ static constexpr unsigned const WAVE_FORMAT_EXTENSIBLE = 0xFFFE; // Determined b
 // Parses and reads audio data from a WAV file.
 class WavLoaderPlugin : public LoaderPlugin {
 public:
-    explicit WavLoaderPlugin(NonnullOwnPtr<Core::Stream::SeekableStream> stream);
+    explicit WavLoaderPlugin(NonnullOwnPtr<SeekableStream> stream);
     static Result<NonnullOwnPtr<WavLoaderPlugin>, LoaderError> create(StringView path);
     static Result<NonnullOwnPtr<WavLoaderPlugin>, LoaderError> create(Bytes buffer);
 
@@ -55,7 +55,7 @@ private:
 
     LoaderSamples samples_from_pcm_data(Bytes const& data, size_t samples_to_read) const;
     template<typename SampleReader>
-    MaybeLoaderError read_samples_from_stream(Core::Stream::Stream& stream, SampleReader read_sample, FixedArray<Sample>& samples) const;
+    MaybeLoaderError read_samples_from_stream(AK::Stream& stream, SampleReader read_sample, FixedArray<Sample>& samples) const;
 
     u32 m_sample_rate { 0 };
     u16 m_num_channels { 0 };

Userland/Libraries/LibCompress/Brotli.h

@@ -13,8 +13,8 @@
 
 namespace Compress {
 
+using AK::Stream;
 using Core::Stream::LittleEndianInputBitStream;
-using Core::Stream::Stream;
 
 class BrotliDecompressionStream : public Stream {
 public:

Userland/Libraries/LibCompress/Deflate.cpp

@@ -188,13 +188,13 @@ ErrorOr<bool> DeflateDecompressor::UncompressedBlock::try_read_more()
     return true;
 }
 
-ErrorOr<NonnullOwnPtr<DeflateDecompressor>> DeflateDecompressor::construct(MaybeOwned<Core::Stream::Stream> stream)
+ErrorOr<NonnullOwnPtr<DeflateDecompressor>> DeflateDecompressor::construct(MaybeOwned<AK::Stream> stream)
 {
     auto output_buffer = TRY(CircularBuffer::create_empty(32 * KiB));
     return TRY(adopt_nonnull_own_or_enomem(new (nothrow) DeflateDecompressor(move(stream), move(output_buffer))));
 }
 
-DeflateDecompressor::DeflateDecompressor(MaybeOwned<Core::Stream::Stream> stream, CircularBuffer output_buffer)
+DeflateDecompressor::DeflateDecompressor(MaybeOwned<AK::Stream> stream, CircularBuffer output_buffer)
     : m_input_stream(make<Core::Stream::LittleEndianInputBitStream>(move(stream)))
     , m_output_buffer(move(output_buffer))
 {
@@ -446,7 +446,7 @@ ErrorOr<void> DeflateDecompressor::decode_codes(CanonicalCode& literal_code, Opt
     return {};
 }
 
-ErrorOr<NonnullOwnPtr<DeflateCompressor>> DeflateCompressor::construct(MaybeOwned<Core::Stream::Stream> stream, CompressionLevel compression_level)
+ErrorOr<NonnullOwnPtr<DeflateCompressor>> DeflateCompressor::construct(MaybeOwned<AK::Stream> stream, CompressionLevel compression_level)
 {
     auto bit_stream = TRY(Core::Stream::LittleEndianOutputBitStream::construct(move(stream)));
     auto deflate_compressor = TRY(adopt_nonnull_own_or_enomem(new (nothrow) DeflateCompressor(move(bit_stream), compression_level)));
@@ -1017,7 +1017,7 @@ ErrorOr<void> DeflateCompressor::final_flush()
 ErrorOr<ByteBuffer> DeflateCompressor::compress_all(ReadonlyBytes bytes, CompressionLevel compression_level)
 {
     auto output_stream = TRY(try_make<Core::Stream::AllocatingMemoryStream>());
-    auto deflate_stream = TRY(DeflateCompressor::construct(MaybeOwned<Core::Stream::Stream>(*output_stream), compression_level));
+    auto deflate_stream = TRY(DeflateCompressor::construct(MaybeOwned<AK::Stream>(*output_stream), compression_level));
 
     TRY(deflate_stream->write_entire_buffer(bytes));
     TRY(deflate_stream->final_flush());

Userland/Libraries/LibCompress/Deflate.h

@@ -37,7 +37,7 @@ private:
     Array<u16, 288> m_bit_code_lengths {};
 };
 
-class DeflateDecompressor final : public Core::Stream::Stream {
+class DeflateDecompressor final : public AK::Stream {
 private:
     class CompressedBlock {
     public:
@@ -74,7 +74,7 @@ public:
     friend CompressedBlock;
     friend UncompressedBlock;
 
-    static ErrorOr<NonnullOwnPtr<DeflateDecompressor>> construct(MaybeOwned<Core::Stream::Stream> stream);
+    static ErrorOr<NonnullOwnPtr<DeflateDecompressor>> construct(MaybeOwned<AK::Stream> stream);
     ~DeflateDecompressor();
 
     virtual ErrorOr<Bytes> read(Bytes) override;
@@ -86,7 +86,7 @@ public:
     static ErrorOr<ByteBuffer> decompress_all(ReadonlyBytes);
 
 private:
-    DeflateDecompressor(MaybeOwned<Core::Stream::Stream> stream, CircularBuffer buffer);
+    DeflateDecompressor(MaybeOwned<AK::Stream> stream, CircularBuffer buffer);
 
     ErrorOr<u32> decode_length(u32);
     ErrorOr<u32> decode_distance(u32);
@@ -104,7 +104,7 @@ private:
     CircularBuffer m_output_buffer;
 };
 
-class DeflateCompressor final : public Core::Stream::Stream {
+class DeflateCompressor final : public AK::Stream {
 public:
     static constexpr size_t block_size = 32 * KiB - 1; // TODO: this can theoretically be increased to 64 KiB - 2
     static constexpr size_t window_size = block_size * 2;
@@ -139,7 +139,7 @@ public:
         BEST // WARNING: this one can take an unreasonable amount of time!
     };
 
-    static ErrorOr<NonnullOwnPtr<DeflateCompressor>> construct(MaybeOwned<Core::Stream::Stream>, CompressionLevel = CompressionLevel::GOOD);
+    static ErrorOr<NonnullOwnPtr<DeflateCompressor>> construct(MaybeOwned<AK::Stream>, CompressionLevel = CompressionLevel::GOOD);
     ~DeflateCompressor();
 
     virtual ErrorOr<Bytes> read(Bytes) override;

Userland/Libraries/LibCompress/Gzip.cpp

@@ -38,9 +38,9 @@ bool BlockHeader::supported_by_implementation() const
     return true;
 }
 
-ErrorOr<NonnullOwnPtr<GzipDecompressor::Member>> GzipDecompressor::Member::construct(BlockHeader header, Core::Stream::Stream& stream)
+ErrorOr<NonnullOwnPtr<GzipDecompressor::Member>> GzipDecompressor::Member::construct(BlockHeader header, AK::Stream& stream)
 {
-    auto deflate_stream = TRY(DeflateDecompressor::construct(MaybeOwned<Core::Stream::Stream>(stream)));
+    auto deflate_stream = TRY(DeflateDecompressor::construct(MaybeOwned<AK::Stream>(stream)));
     return TRY(adopt_nonnull_own_or_enomem(new (nothrow) Member(header, move(deflate_stream))));
 }
 
@@ -50,7 +50,7 @@ GzipDecompressor::Member::Member(BlockHeader header, NonnullOwnPtr<DeflateDecomp
 {
 }
 
-GzipDecompressor::GzipDecompressor(NonnullOwnPtr<Core::Stream::Stream> stream)
+GzipDecompressor::GzipDecompressor(NonnullOwnPtr<AK::Stream> stream)
     : m_input_stream(move(stream))
 {
 }
@@ -186,7 +186,7 @@ ErrorOr<size_t> GzipDecompressor::write(ReadonlyBytes)
     return Error::from_errno(EBADF);
 }
 
-GzipCompressor::GzipCompressor(MaybeOwned<Core::Stream::Stream> stream)
+GzipCompressor::GzipCompressor(MaybeOwned<AK::Stream> stream)
     : m_output_stream(move(stream))
 {
 }
@@ -236,7 +236,7 @@ void GzipCompressor::close()
 ErrorOr<ByteBuffer> GzipCompressor::compress_all(ReadonlyBytes bytes)
 {
     auto output_stream = TRY(try_make<Core::Stream::AllocatingMemoryStream>());
-    GzipCompressor gzip_stream { MaybeOwned<Core::Stream::Stream>(*output_stream) };
+    GzipCompressor gzip_stream { MaybeOwned<AK::Stream>(*output_stream) };
 
     TRY(gzip_stream.write_entire_buffer(bytes));
 

Userland/Libraries/LibCompress/Gzip.h

@@ -38,9 +38,9 @@ struct Flags {
     static constexpr u8 MAX = FTEXT | FHCRC | FEXTRA | FNAME | FCOMMENT;
 };
 
-class GzipDecompressor final : public Core::Stream::Stream {
+class GzipDecompressor final : public AK::Stream {
 public:
-    GzipDecompressor(NonnullOwnPtr<Core::Stream::Stream>);
+    GzipDecompressor(NonnullOwnPtr<AK::Stream>);
     ~GzipDecompressor();
 
     virtual ErrorOr<Bytes> read(Bytes) override;
@@ -56,7 +56,7 @@ public:
 private:
     class Member {
     public:
-        static ErrorOr<NonnullOwnPtr<Member>> construct(BlockHeader header, Core::Stream::Stream&);
+        static ErrorOr<NonnullOwnPtr<Member>> construct(BlockHeader header, AK::Stream&);
 
         BlockHeader m_header;
         NonnullOwnPtr<DeflateDecompressor> m_stream;
@@ -70,7 +70,7 @@ private:
     Member const& current_member() const { return *m_current_member; }
     Member& current_member() { return *m_current_member; }
 
-    NonnullOwnPtr<Core::Stream::Stream> m_input_stream;
+    NonnullOwnPtr<AK::Stream> m_input_stream;
     u8 m_partial_header[sizeof(BlockHeader)];
     size_t m_partial_header_offset { 0 };
     OwnPtr<Member> m_current_member {};
@@ -78,9 +78,9 @@ private:
     bool m_eof { false };
 };
 
-class GzipCompressor final : public Core::Stream::Stream {
+class GzipCompressor final : public AK::Stream {
 public:
-    GzipCompressor(MaybeOwned<Core::Stream::Stream>);
+    GzipCompressor(MaybeOwned<AK::Stream>);
 
     virtual ErrorOr<Bytes> read(Bytes) override;
     virtual ErrorOr<size_t> write(ReadonlyBytes) override;
@@ -91,7 +91,7 @@ public:
     static ErrorOr<ByteBuffer> compress_all(ReadonlyBytes bytes);
 
 private:
-    MaybeOwned<Core::Stream::Stream> m_output_stream;
+    MaybeOwned<AK::Stream> m_output_stream;
 };
 
 }

Userland/Libraries/LibCompress/Zlib.cpp

@@ -69,7 +69,7 @@ u32 ZlibDecompressor::checksum()
     return m_checksum;
 }
 
-ErrorOr<NonnullOwnPtr<ZlibCompressor>> ZlibCompressor::construct(MaybeOwned<Core::Stream::Stream> stream, ZlibCompressionLevel compression_level)
+ErrorOr<NonnullOwnPtr<ZlibCompressor>> ZlibCompressor::construct(MaybeOwned<AK::Stream> stream, ZlibCompressionLevel compression_level)
 {
     // Zlib only defines Deflate as a compression method.
     auto compression_method = ZlibCompressionMethod::Deflate;
@@ -83,7 +83,7 @@ ErrorOr<NonnullOwnPtr<ZlibCompressor>> ZlibCompressor::construct(MaybeOwned<Core
     return zlib_compressor;
 }
 
-ZlibCompressor::ZlibCompressor(MaybeOwned<Core::Stream::Stream> stream, NonnullOwnPtr<Core::Stream::Stream> compressor_stream)
+ZlibCompressor::ZlibCompressor(MaybeOwned<AK::Stream> stream, NonnullOwnPtr<AK::Stream> compressor_stream)
     : m_output_stream(move(stream))
     , m_compressor(move(compressor_stream))
 {
@@ -164,7 +164,7 @@ ErrorOr<void> ZlibCompressor::finish()
 ErrorOr<ByteBuffer> ZlibCompressor::compress_all(ReadonlyBytes bytes, ZlibCompressionLevel compression_level)
 {
     auto output_stream = TRY(try_make<Core::Stream::AllocatingMemoryStream>());
-    auto zlib_stream = TRY(ZlibCompressor::construct(MaybeOwned<Core::Stream::Stream>(*output_stream), compression_level));
+    auto zlib_stream = TRY(ZlibCompressor::construct(MaybeOwned<AK::Stream>(*output_stream), compression_level));
 
     TRY(zlib_stream->write_entire_buffer(bytes));
 

Userland/Libraries/LibCompress/Zlib.h

@@ -61,9 +61,9 @@ private:
     ReadonlyBytes m_data_bytes;
 };
 
-class ZlibCompressor : public Core::Stream::Stream {
+class ZlibCompressor : public AK::Stream {
 public:
-    static ErrorOr<NonnullOwnPtr<ZlibCompressor>> construct(MaybeOwned<Core::Stream::Stream>, ZlibCompressionLevel = ZlibCompressionLevel::Default);
+    static ErrorOr<NonnullOwnPtr<ZlibCompressor>> construct(MaybeOwned<AK::Stream>, ZlibCompressionLevel = ZlibCompressionLevel::Default);
     ~ZlibCompressor();
 
     virtual ErrorOr<Bytes> read(Bytes) override;
@@ -76,12 +76,12 @@ public:
     static ErrorOr<ByteBuffer> compress_all(ReadonlyBytes bytes, ZlibCompressionLevel = ZlibCompressionLevel::Default);
 
 private:
-    ZlibCompressor(MaybeOwned<Core::Stream::Stream> stream, NonnullOwnPtr<Core::Stream::Stream> compressor_stream);
+    ZlibCompressor(MaybeOwned<AK::Stream> stream, NonnullOwnPtr<AK::Stream> compressor_stream);
     ErrorOr<void> write_header(ZlibCompressionMethod, ZlibCompressionLevel);
 
     bool m_finished { false };
-    MaybeOwned<Core::Stream::Stream> m_output_stream;
-    NonnullOwnPtr<Core::Stream::Stream> m_compressor;
+    MaybeOwned<AK::Stream> m_output_stream;
+    NonnullOwnPtr<AK::Stream> m_compressor;
     Crypto::Checksum::Adler32 m_adler32_checksum;
 };
 

Userland/Libraries/LibCore/BitStream.h

@@ -22,7 +22,7 @@ namespace Core::Stream {
 
 /// A stream wrapper class that allows you to read arbitrary amounts of bits
 /// in big-endian order from another stream.
-class BigEndianInputBitStream : public Stream {
+class BigEndianInputBitStream : public AK::Stream {
 public:
     static ErrorOr<NonnullOwnPtr<BigEndianInputBitStream>> construct(MaybeOwned<Stream> stream)
     {
@@ -131,7 +131,7 @@ private:
 
 /// A stream wrapper class that allows you to read arbitrary amounts of bits
 /// in little-endian order from another stream.
-class LittleEndianInputBitStream : public Stream {
+class LittleEndianInputBitStream : public AK::Stream {
 public:
     static ErrorOr<NonnullOwnPtr<LittleEndianInputBitStream>> construct(MaybeOwned<Stream> stream)
     {
@@ -240,7 +240,7 @@ private:
 
 /// A stream wrapper class that allows you to write arbitrary amounts of bits
 /// in big-endian order to another stream.
-class BigEndianOutputBitStream : public Stream {
+class BigEndianOutputBitStream : public AK::Stream {
 public:
     static ErrorOr<NonnullOwnPtr<BigEndianOutputBitStream>> construct(MaybeOwned<Stream> stream)
     {
@@ -323,7 +323,7 @@ private:
 
 /// A stream wrapper class that allows you to write arbitrary amounts of bits
 /// in little-endian order to another stream.
-class LittleEndianOutputBitStream : public Stream {
+class LittleEndianOutputBitStream : public AK::Stream {
 public:
     static ErrorOr<NonnullOwnPtr<LittleEndianOutputBitStream>> construct(MaybeOwned<Stream> stream)
     {

Userland/Libraries/LibCore/ConfigFile.cpp

@@ -176,7 +176,7 @@ ErrorOr<void> ConfigFile::sync()
         return Error::from_errno(ENOENT);
 
     TRY(m_file->truncate(0));
-    TRY(m_file->seek(0, Stream::SeekMode::SetPosition));
+    TRY(m_file->seek(0, SeekMode::SetPosition));
 
     for (auto& it : m_groups) {
         TRY(m_file->write(DeprecatedString::formatted("[{}]\n", it.key).bytes()));

Userland/Libraries/LibCore/Forward.h

@@ -40,7 +40,6 @@ enum class TimerShouldFireWhenNotVisible;
 namespace Stream {
 class File;
 class Socket;
-class Stream;
 class BufferedSocketBase;
 }
 

Userland/Libraries/LibCore/IODevice.h

@@ -9,6 +9,7 @@
 
 #include <AK/EnumBits.h>
 #include <AK/Forward.h>
+#include <AK/Stream.h>
 #include <LibCore/Object.h>
 
 namespace Core {
@@ -62,12 +63,6 @@ enum class OpenMode : unsigned {
     KeepOnExec = 32,
 };
 
-enum class SeekMode {
-    SetPosition,
-    FromCurrentPosition,
-    FromEndPosition,
-};
-
 AK_ENUM_BITWISE_OPERATORS(OpenMode)
 
 class IODevice : public Object {

Userland/Libraries/LibCore/MemoryStream.h

@@ -49,7 +49,7 @@ private:
 
 /// A stream class that allows for writing to an automatically allocating memory area
 /// and reading back the written data afterwards.
-class AllocatingMemoryStream final : public Stream {
+class AllocatingMemoryStream final : public AK::Stream {
 public:
     virtual ErrorOr<Bytes> read(Bytes) override;
     virtual ErrorOr<size_t> write(ReadonlyBytes) override;

Userland/Libraries/LibCore/NetworkJob.cpp

@@ -11,7 +11,7 @@
 
 namespace Core {
 
-NetworkJob::NetworkJob(Core::Stream::Stream& output_stream)
+NetworkJob::NetworkJob(AK::Stream& output_stream)
     : m_output_stream(output_stream)
 {
 }

Userland/Libraries/LibCore/NetworkJob.h

@@ -52,7 +52,7 @@ public:
     }
 
 protected:
-    NetworkJob(Core::Stream::Stream&);
+    NetworkJob(AK::Stream&);
     void did_finish(NonnullRefPtr<NetworkResponse>&&);
     void did_fail(Error);
     void did_progress(Optional<u32> total_size, u32 downloaded);
@@ -61,7 +61,7 @@ protected:
 
 private:
     RefPtr<NetworkResponse> m_response;
-    Core::Stream::Stream& m_output_stream;
+    AK::Stream& m_output_stream;
     Error m_error { Error::None };
 };
 

Userland/Libraries/LibCore/ProcessStatisticsReader.cpp

@@ -15,9 +15,9 @@ namespace Core {
 
 HashMap<uid_t, DeprecatedString> ProcessStatisticsReader::s_usernames;
 
-ErrorOr<AllProcessesStatistics> ProcessStatisticsReader::get_all(Core::Stream::SeekableStream& proc_all_file, bool include_usernames)
+ErrorOr<AllProcessesStatistics> ProcessStatisticsReader::get_all(SeekableStream& proc_all_file, bool include_usernames)
 {
-    TRY(proc_all_file.seek(0, Core::Stream::SeekMode::SetPosition));
+    TRY(proc_all_file.seek(0, SeekMode::SetPosition));
 
     AllProcessesStatistics all_processes_statistics;
 

Userland/Libraries/LibCore/ProcessStatisticsReader.h

@@ -72,7 +72,7 @@ struct AllProcessesStatistics {
 
 class ProcessStatisticsReader {
 public:
-    static ErrorOr<AllProcessesStatistics> get_all(Core::Stream::SeekableStream&, bool include_usernames = true);
+    static ErrorOr<AllProcessesStatistics> get_all(SeekableStream&, bool include_usernames = true);
     static ErrorOr<AllProcessesStatistics> get_all(bool include_usernames = true);
 
 private:

Userland/Libraries/LibCore/Stream.cpp

@@ -22,124 +22,6 @@
 
 namespace Core::Stream {
 
-ErrorOr<void> Stream::read_entire_buffer(Bytes buffer)
-{
-    size_t nread = 0;
-    while (nread < buffer.size()) {
-        if (is_eof())
-            return Error::from_string_literal("Reached end-of-file before filling the entire buffer");
-
-        auto result = read(buffer.slice(nread));
-        if (result.is_error()) {
-            if (result.error().is_errno() && result.error().code() == EINTR) {
-                continue;
-            }
-
-            return result.release_error();
-        }
-
-        nread += result.value().size();
-    }
-
-    return {};
-}
-
-ErrorOr<ByteBuffer> Stream::read_until_eof(size_t block_size)
-{
-    return read_until_eof_impl(block_size);
-}
-
-ErrorOr<ByteBuffer> Stream::read_until_eof_impl(size_t block_size, size_t expected_file_size)
-{
-    ByteBuffer data;
-    data.ensure_capacity(expected_file_size);
-
-    size_t total_read = 0;
-    Bytes buffer;
-    while (!is_eof()) {
-        if (buffer.is_empty()) {
-            buffer = TRY(data.get_bytes_for_writing(block_size));
-        }
-
-        auto nread = TRY(read(buffer)).size();
-        total_read += nread;
-        buffer = buffer.slice(nread);
-    }
-
-    data.resize(total_read);
-    return data;
-}
-
-ErrorOr<void> Stream::discard(size_t discarded_bytes)
-{
-    // Note: This was chosen arbitrarily.
-    // Note: This can't be PAGE_SIZE because it is defined to sysconf() on Lagom.
-    constexpr size_t continuous_read_size = 4096;
-
-    Array<u8, continuous_read_size> buffer;
-
-    while (discarded_bytes > 0) {
-        if (is_eof())
-            return Error::from_string_literal("Reached end-of-file before reading all discarded bytes");
-
-        auto slice = TRY(read(buffer.span().slice(0, min(discarded_bytes, continuous_read_size))));
-        discarded_bytes -= slice.size();
-    }
-
-    return {};
-}
-
-ErrorOr<void> Stream::write_entire_buffer(ReadonlyBytes buffer)
-{
-    size_t nwritten = 0;
-    while (nwritten < buffer.size()) {
-        auto result = write(buffer.slice(nwritten));
-        if (result.is_error()) {
-            if (result.error().is_errno() && result.error().code() == EINTR) {
-                continue;
-            }
-
-            return result.release_error();
-        }
-
-        nwritten += result.value();
-    }
-
-    return {};
-}
-
-ErrorOr<size_t> SeekableStream::tell() const
-{
-    // Seek with 0 and SEEK_CUR does not modify anything despite the const_cast,
-    // so it's safe to do this.
-    return const_cast<SeekableStream*>(this)->seek(0, SeekMode::FromCurrentPosition);
-}
-
-ErrorOr<size_t> SeekableStream::size()
-{
-    auto original_position = TRY(tell());
-
-    auto seek_result = seek(0, SeekMode::FromEndPosition);
-    if (seek_result.is_error()) {
-        // Let's try to restore the original position, just in case.
-        auto restore_result = seek(original_position, SeekMode::SetPosition);
-        if (restore_result.is_error()) {
-            dbgln("Core::SeekableStream::size: Couldn't restore initial position, stream might have incorrect position now!");
-        }
-
-        return seek_result.release_error();
-    }
-
-    TRY(seek(original_position, SeekMode::SetPosition));
-    return seek_result.value();
-}
-
-ErrorOr<void> SeekableStream::discard(size_t discarded_bytes)
-{
-    TRY(seek(discarded_bytes, SeekMode::FromCurrentPosition));
-    return {};
-}
-
 ErrorOr<NonnullOwnPtr<File>> File::open(StringView filename, OpenMode mode, mode_t permissions)
 {
     auto file = TRY(adopt_nonnull_own_or_enomem(new (nothrow) File(mode)));
@@ -780,7 +662,7 @@ void WrappedAKOutputStream::close()
 {
 }
 
-WrapInAKInputStream::WrapInAKInputStream(Core::Stream::Stream& stream)
+WrapInAKInputStream::WrapInAKInputStream(AK::Stream& stream)
     : m_stream(stream)
 {
 }
@@ -826,7 +708,7 @@ bool WrapInAKInputStream::discard_or_error(size_t count)
     return true;
 }
 
-WrapInAKOutputStream::WrapInAKOutputStream(Core::Stream::Stream& stream)
+WrapInAKOutputStream::WrapInAKOutputStream(AK::Stream& stream)
     : m_stream(stream)
 {
 }

Userland/Libraries/LibCore/Stream.h

@@ -17,6 +17,7 @@
 #include <AK/Noncopyable.h>
 #include <AK/Result.h>
 #include <AK/Span.h>
+#include <AK/Stream.h>
 #include <AK/Time.h>
 #include <AK/Variant.h>
 #include <LibCore/Notifier.h>
@@ -27,119 +28,6 @@
 
 namespace Core::Stream {
 
-/// The base, abstract class for stream operations. This class defines the
-/// operations one can perform on every stream in LibCore.
-/// Operations without a sensible default that are unsupported by an implementation
-/// of a Stream should return EBADF as an error.
-class Stream {
-public:
-    /// Reads into a buffer, with the maximum size being the size of the buffer.
-    /// The amount of bytes read can be smaller than the size of the buffer.
-    /// Returns either the bytes that were read, or an errno in the case of
-    /// failure.
-    virtual ErrorOr<Bytes> read(Bytes) = 0;
-    /// Tries to fill the entire buffer through reading. Returns whether the
-    /// buffer was filled without an error.
-    virtual ErrorOr<void> read_entire_buffer(Bytes);
-    /// Reads the stream until EOF, storing the contents into a ByteBuffer which
-    /// is returned once EOF is encountered. The block size determines the size
-    /// of newly allocated chunks while reading.
-    virtual ErrorOr<ByteBuffer> read_until_eof(size_t block_size = 4096);
-    /// Discards the given number of bytes from the stream. As this is usually used
-    /// as an efficient version of `read_entire_buffer`, it returns an error
-    /// if reading failed or if not all bytes could be discarded.
-    /// Unless specifically overwritten, this just uses read() to read into an
-    /// internal stack-based buffer.
-    virtual ErrorOr<void> discard(size_t discarded_bytes);
-
-    /// Tries to write the entire contents of the buffer. It is possible for
-    /// less than the full buffer to be written. Returns either the amount of
-    /// bytes written into the stream, or an errno in the case of failure.
-    virtual ErrorOr<size_t> write(ReadonlyBytes) = 0;
-    /// Same as write, but does not return until either the entire buffer
-    /// contents are written or an error occurs.
-    virtual ErrorOr<void> write_entire_buffer(ReadonlyBytes);
-
-    template<typename T>
-    requires(requires(Stream& stream) { { T::read_from_stream(stream) } -> SameAs<ErrorOr<T>>; })
-    ErrorOr<T> read_value()
-    {
-        return T::read_from_stream(*this);
-    }
-
-    template<typename T>
-    requires(Traits<T>::is_trivially_serializable())
-    ErrorOr<T> read_value()
-    {
-        alignas(T) u8 buffer[sizeof(T)] = {};
-        TRY(read_entire_buffer({ &buffer, sizeof(buffer) }));
-        return bit_cast<T>(buffer);
-    }
-
-    template<typename T>
-    requires(requires(T t, Stream& stream) { { t.write_to_stream(stream) } -> SameAs<ErrorOr<void>>; })
-    ErrorOr<void> write_value(T const& value)
-    {
-        return value.write_to_stream(*this);
-    }
-
-    template<typename T>
-    requires(Traits<T>::is_trivially_serializable())
-    ErrorOr<void> write_value(T const& value)
-    {
-        return write_entire_buffer({ &value, sizeof(value) });
-    }
-
-    /// Returns whether the stream has reached the end of file. For sockets,
-    /// this most likely means that the protocol has disconnected (in the case
-    /// of TCP). For seekable streams, this means the end of the file. Note that
-    /// is_eof will only return true _after_ a read with 0 length, so this
-    /// method should be called after a read.
-    virtual bool is_eof() const = 0;
-
-    virtual bool is_open() const = 0;
-    virtual void close() = 0;
-
-    virtual ~Stream()
-    {
-    }
-
-protected:
-    /// Provides a default implementation of read_until_eof that works for streams
-    /// that behave like POSIX file descriptors. expected_file_size can be
-    /// passed as a heuristic for what the Stream subclass expects the file
-    /// content size to be in order to reduce allocations (does not affect
-    /// actual reading).
-    ErrorOr<ByteBuffer> read_until_eof_impl(size_t block_size, size_t expected_file_size = 0);
-};
-
-enum class SeekMode {
-    SetPosition,
-    FromCurrentPosition,
-    FromEndPosition,
-};
-
-/// Adds seekability to Core::Stream. Classes inheriting from SeekableStream
-/// will be seekable to any point in the stream.
-class SeekableStream : public Stream {
-public:
-    /// Seeks to the given position in the given mode. Returns either the
-    /// current position of the file, or an errno in the case of an error.
-    virtual ErrorOr<size_t> seek(i64 offset, SeekMode) = 0;
-    /// Returns the current position of the file, or an errno in the case of
-    /// an error.
-    virtual ErrorOr<size_t> tell() const;
-    /// Returns the total size of the stream, or an errno in the case of an
-    /// error. May not preserve the original position on the stream on failure.
-    virtual ErrorOr<size_t> size();
-    /// Shrinks or extends the stream to the given size. Returns an errno in
-    /// the case of an error.
-    virtual ErrorOr<void> truncate(off_t length) = 0;
-    /// Seeks until after the given amount of bytes to be discarded instead of
-    /// reading and discarding everything manually;
-    virtual ErrorOr<void> discard(size_t discarded_bytes) override;
-};
-
 enum class PreventSIGPIPE {
     No,
     Yes,
@@ -147,7 +35,7 @@ enum class PreventSIGPIPE {
 
 /// The Socket class is the base class for all concrete BSD-style socket
 /// classes. Sockets are non-seekable streams which can be read byte-wise.
-class Socket : public Stream {
+class Socket : public AK::Stream {
 public:
     Socket(Socket&&) = default;
     Socket& operator=(Socket&&) = default;
@@ -577,7 +465,7 @@ private:
 // Buffered stream wrappers
 
 template<typename T>
-concept StreamLike = IsBaseOf<Stream, T>;
+concept StreamLike = IsBaseOf<AK::Stream, T>;
 template<typename T>
 concept SeekableStreamLike = IsBaseOf<SeekableStream, T>;
 template<typename T>
@@ -1028,7 +916,7 @@ using ReusableTCPSocket = BasicReusableSocket<TCPSocket>;
 using ReusableUDPSocket = BasicReusableSocket<UDPSocket>;
 
 // Note: This is only a temporary hack, to break up the task of moving away from AK::Stream into smaller parts.
-class WrappedAKInputStream final : public Stream {
+class WrappedAKInputStream final : public AK::Stream {
 public:
     WrappedAKInputStream(NonnullOwnPtr<DeprecatedInputStream> stream);
     virtual ErrorOr<Bytes> read(Bytes) override;
@@ -1043,7 +931,7 @@ private:
 };
 
 // Note: This is only a temporary hack, to break up the task of moving away from AK::Stream into smaller parts.
-class WrappedAKOutputStream final : public Stream {
+class WrappedAKOutputStream final : public AK::Stream {
 public:
     WrappedAKOutputStream(NonnullOwnPtr<DeprecatedOutputStream> stream);
     virtual ErrorOr<Bytes> read(Bytes) override;
@@ -1059,25 +947,25 @@ private:
 // Note: This is only a temporary hack, to break up the task of moving away from AK::Stream into smaller parts.
 class WrapInAKInputStream final : public DeprecatedInputStream {
 public:
-    WrapInAKInputStream(Core::Stream::Stream& stream);
+    WrapInAKInputStream(AK::Stream& stream);
     virtual size_t read(Bytes) override;
     virtual bool unreliable_eof() const override;
     virtual bool read_or_error(Bytes) override;
     virtual bool discard_or_error(size_t count) override;
 
 private:
-    Core::Stream::Stream& m_stream;
+    AK::Stream& m_stream;
 };
 
 // Note: This is only a temporary hack, to break up the task of moving away from AK::Stream into smaller parts.
 class WrapInAKOutputStream final : public DeprecatedOutputStream {
 public:
-    WrapInAKOutputStream(Core::Stream::Stream& stream);
+    WrapInAKOutputStream(AK::Stream& stream);
     virtual size_t write(ReadonlyBytes) override;
     virtual bool write_or_error(ReadonlyBytes) override;
 
 private:
-    Core::Stream::Stream& m_stream;
+    AK::Stream& m_stream;
 };
 
 }

Userland/Libraries/LibDNS/Name.cpp

@@ -75,7 +75,7 @@ void Name::randomize_case()
     m_name = builder.to_deprecated_string();
 }
 
-ErrorOr<void> Name::write_to_stream(Core::Stream::Stream& stream) const
+ErrorOr<void> Name::write_to_stream(AK::Stream& stream) const
 {
     auto parts = as_string().split_view('.');
     for (auto& part : parts) {

Userland/Libraries/LibDNS/Name.h

@@ -22,7 +22,7 @@ public:
 
     size_t serialized_size() const;
     DeprecatedString const& as_string() const { return m_name; }
-    ErrorOr<void> write_to_stream(Core::Stream::Stream&) const;
+    ErrorOr<void> write_to_stream(AK::Stream&) const;
 
     void randomize_case();
 

Userland/Libraries/LibDebug/Dwarf/AddressRanges.cpp

@@ -11,7 +11,7 @@
 
 namespace Debug::Dwarf {
 
-AddressRangesV5::AddressRangesV5(NonnullOwnPtr<Core::Stream::Stream> range_lists_stream, CompilationUnit const& compilation_unit)
+AddressRangesV5::AddressRangesV5(NonnullOwnPtr<AK::Stream> range_lists_stream, CompilationUnit const& compilation_unit)
     : m_range_lists_stream(move(range_lists_stream))
     , m_compilation_unit(compilation_unit)
 {
@@ -85,7 +85,7 @@ ErrorOr<void> AddressRangesV5::for_each_range(Function<void(Range)> callback)
     return {};
 }
 
-AddressRangesV4::AddressRangesV4(NonnullOwnPtr<Core::Stream::Stream> ranges_stream, CompilationUnit const& compilation_unit)
+AddressRangesV4::AddressRangesV4(NonnullOwnPtr<AK::Stream> ranges_stream, CompilationUnit const& compilation_unit)
     : m_ranges_stream(move(ranges_stream))
     , m_compilation_unit(compilation_unit)
 {

Userland/Libraries/LibDebug/Dwarf/AddressRanges.h

@@ -24,12 +24,12 @@ class AddressRangesV5 {
     AK_MAKE_NONMOVABLE(AddressRangesV5);
 
 public:
-    AddressRangesV5(NonnullOwnPtr<Core::Stream::Stream> range_lists_stream, CompilationUnit const& compilation_unit);
+    AddressRangesV5(NonnullOwnPtr<AK::Stream> range_lists_stream, CompilationUnit const& compilation_unit);
 
     ErrorOr<void> for_each_range(Function<void(Range)>);
 
 private:
-    NonnullOwnPtr<Core::Stream::Stream> m_range_lists_stream;
+    NonnullOwnPtr<AK::Stream> m_range_lists_stream;
     CompilationUnit const& m_compilation_unit;
 };
 
@@ -38,12 +38,12 @@ class AddressRangesV4 {
     AK_MAKE_NONMOVABLE(AddressRangesV4);
 
 public:
-    AddressRangesV4(NonnullOwnPtr<Core::Stream::Stream> ranges_stream, CompilationUnit const&);
+    AddressRangesV4(NonnullOwnPtr<AK::Stream> ranges_stream, CompilationUnit const&);
 
     ErrorOr<void> for_each_range(Function<void(Range)>);
 
 private:
-    NonnullOwnPtr<Core::Stream::Stream> m_ranges_stream;
+    NonnullOwnPtr<AK::Stream> m_ranges_stream;
     CompilationUnit const& m_compilation_unit;
 };
 

Userland/Libraries/LibDebug/Dwarf/DwarfInfo.cpp

@@ -80,7 +80,7 @@ ErrorOr<void> DwarfInfo::populate_compilation_units()
 }
 
 ErrorOr<AttributeValue> DwarfInfo::get_attribute_value(AttributeDataForm form, ssize_t implicit_const_value,
-    Core::Stream::SeekableStream& debug_info_stream, CompilationUnit const* unit) const
+    SeekableStream& debug_info_stream, CompilationUnit const* unit) const
 {
     AttributeValue value;
     value.m_form = form;

Userland/Libraries/LibDebug/Dwarf/DwarfInfo.h

@@ -43,7 +43,7 @@ public:
     ErrorOr<void> for_each_compilation_unit(Callback) const;
 
     ErrorOr<AttributeValue> get_attribute_value(AttributeDataForm form, ssize_t implicit_const_value,
-        Core::Stream::SeekableStream& debug_info_stream, CompilationUnit const* unit = nullptr) const;
+        SeekableStream& debug_info_stream, CompilationUnit const* unit = nullptr) const;
 
     ErrorOr<Optional<DIE>> get_die_at_address(FlatPtr) const;
 

Userland/Libraries/LibDebug/Dwarf/DwarfTypes.h

@@ -54,7 +54,7 @@ struct [[gnu::packed]] CompilationUnitHeader {
     u32 abbrev_offset() const { return (common.version <= 4) ? v4.abbrev_offset : v5.abbrev_offset; }
     u8 address_size() const { return (common.version <= 4) ? v4.address_size : v5.address_size; }
 
-    static ErrorOr<CompilationUnitHeader> read_from_stream(Core::Stream::Stream& stream)
+    static ErrorOr<CompilationUnitHeader> read_from_stream(AK::Stream& stream)
     {
         CompilationUnitHeader header;
         TRY(stream.read_entire_buffer(Bytes { &header.common, sizeof(header.common) }));

Userland/Libraries/LibDebug/Dwarf/LineProgram.cpp

@@ -14,7 +14,7 @@
 
 namespace Debug::Dwarf {
 
-LineProgram::LineProgram(DwarfInfo& dwarf_info, Core::Stream::SeekableStream& stream)
+LineProgram::LineProgram(DwarfInfo& dwarf_info, SeekableStream& stream)
     : m_dwarf_info(dwarf_info)
     , m_stream(stream)
 {

Userland/Libraries/LibDebug/Dwarf/LineProgram.h

@@ -66,7 +66,7 @@ struct [[gnu::packed]] LineProgramUnitHeader32 {
     u8 line_range() const { return (common.version <= 4) ? v4.line_range : v5.line_range; }
     u8 opcode_base() const { return (common.version <= 4) ? v4.opcode_base : v5.opcode_base; }
 
-    static ErrorOr<LineProgramUnitHeader32> read_from_stream(Core::Stream::Stream& stream)
+    static ErrorOr<LineProgramUnitHeader32> read_from_stream(AK::Stream& stream)
     {
         LineProgramUnitHeader32 header;
         TRY(stream.read_entire_buffer(Bytes { &header.common, sizeof(header.common) }));
@@ -109,7 +109,7 @@ class LineProgram {
     AK_MAKE_NONMOVABLE(LineProgram);
 
 public:
-    explicit LineProgram(DwarfInfo& dwarf_info, Core::Stream::SeekableStream& stream);
+    explicit LineProgram(DwarfInfo& dwarf_info, SeekableStream& stream);
 
     struct LineInfo {
         FlatPtr address { 0 };
@@ -174,7 +174,7 @@ private:
     static constexpr u16 MAX_DWARF_VERSION = 5;
 
     DwarfInfo& m_dwarf_info;
-    Core::Stream::SeekableStream& m_stream;
+    SeekableStream& m_stream;
 
     size_t m_unit_offset { 0 };
     LineProgramUnitHeader32 m_unit_header {};

Userland/Libraries/LibGemini/Job.cpp

@@ -15,7 +15,7 @@
 
 namespace Gemini {
 
-Job::Job(GeminiRequest const& request, Core::Stream::Stream& output_stream)
+Job::Job(GeminiRequest const& request, AK::Stream& output_stream)
     : Core::NetworkJob(output_stream)
     , m_request(request)
 {

Userland/Libraries/LibGemini/Job.h

@@ -17,7 +17,7 @@ class Job : public Core::NetworkJob {
     C_OBJECT(Job);
 
 public:
-    explicit Job(GeminiRequest const&, Core::Stream::Stream&);
+    explicit Job(GeminiRequest const&, AK::Stream&);
     virtual ~Job() override = default;
 
     virtual void start(Core::Stream::Socket&) override;

Userland/Libraries/LibGfx/GIFLoader.cpp

@@ -89,7 +89,7 @@ enum class GIFFormat {
     GIF89a,
 };
 
-static ErrorOr<GIFFormat> decode_gif_header(Core::Stream::Stream& stream)
+static ErrorOr<GIFFormat> decode_gif_header(AK::Stream& stream)
 {
     static auto valid_header_87 = "GIF87a"sv;
     static auto valid_header_89 = "GIF89a"sv;

Userland/Libraries/LibGfx/JPGLoader.cpp

@@ -459,7 +459,7 @@ static inline bool is_valid_marker(const Marker marker)
     return false;
 }
 
-static inline ErrorOr<Marker> read_marker_at_cursor(Core::Stream::Stream& stream)
+static inline ErrorOr<Marker> read_marker_at_cursor(AK::Stream& stream)
 {
     u16 marker = TRY(stream.read_value<BigEndian<u16>>());
     if (is_valid_marker(marker))
@@ -476,7 +476,7 @@ static inline ErrorOr<Marker> read_marker_at_cursor(Core::Stream::Stream& stream
     return is_valid_marker(marker) ? marker : JPG_INVALID;
 }
 
-static ErrorOr<void> read_start_of_scan(Core::Stream::SeekableStream& stream, JPGLoadingContext& context)
+static ErrorOr<void> read_start_of_scan(AK::SeekableStream& stream, JPGLoadingContext& context)
 {
     if (context.state < JPGLoadingContext::State::FrameDecoded) {
         dbgln_if(JPG_DEBUG, "{}: SOS found before reading a SOF!", TRY(stream.tell()));
@@ -537,7 +537,7 @@ static ErrorOr<void> read_start_of_scan(Core::Stream::SeekableStream& stream, JP
     return {};
 }
 
-static ErrorOr<void> read_reset_marker(Core::Stream::SeekableStream& stream, JPGLoadingContext& context)
+static ErrorOr<void> read_reset_marker(AK::SeekableStream& stream, JPGLoadingContext& context)
 {
     u16 bytes_to_read = TRY(stream.read_value<BigEndian<u16>>()) - 2;
     if (bytes_to_read != 2) {
@@ -548,7 +548,7 @@ static ErrorOr<void> read_reset_marker(Core::Stream::SeekableStream& stream, JPG
     return {};
 }
 
-static ErrorOr<void> read_huffman_table(Core::Stream::SeekableStream& stream, JPGLoadingContext& context)
+static ErrorOr<void> read_huffman_table(AK::SeekableStream& stream, JPGLoadingContext& context)
 {
     i32 bytes_to_read = TRY(stream.read_value<BigEndian<u16>>());
     TRY(ensure_bounds_okay(TRY(stream.tell()), bytes_to_read, context.data_size));
@@ -600,7 +600,7 @@ static ErrorOr<void> read_huffman_table(Core::Stream::SeekableStream& stream, JP
     return {};
 }
 
-static ErrorOr<void> read_icc_profile(Core::Stream::SeekableStream& stream, JPGLoadingContext& context, int bytes_to_read)
+static ErrorOr<void> read_icc_profile(SeekableStream& stream, JPGLoadingContext& context, int bytes_to_read)
 {
     if (bytes_to_read <= 2)
         return Error::from_string_literal("icc marker too small");
@@ -658,7 +658,7 @@ static ErrorOr<void> read_icc_profile(Core::Stream::SeekableStream& stream, JPGL
     return {};
 }
 
-static ErrorOr<void> read_app_marker(Core::Stream::SeekableStream& stream, JPGLoadingContext& context, int app_marker_number)
+static ErrorOr<void> read_app_marker(SeekableStream& stream, JPGLoadingContext& context, int app_marker_number)
 {
     i32 bytes_to_read = TRY(stream.read_value<BigEndian<u16>>());
     TRY(ensure_bounds_okay(TRY(stream.tell()), bytes_to_read, context.data_size));
@@ -718,7 +718,7 @@ static inline void set_macroblock_metadata(JPGLoadingContext& context)
     context.mblock_meta.total = context.mblock_meta.hcount * context.mblock_meta.vcount;
 }
 
-static ErrorOr<void> read_start_of_frame(Core::Stream::SeekableStream& stream, JPGLoadingContext& context)
+static ErrorOr<void> read_start_of_frame(AK::SeekableStream& stream, JPGLoadingContext& context)
 {
     if (context.state == JPGLoadingContext::FrameDecoded) {
         dbgln_if(JPG_DEBUG, "{}: SOF repeated!", TRY(stream.tell()));
@@ -802,7 +802,7 @@ static ErrorOr<void> read_start_of_frame(Core::Stream::SeekableStream& stream, J
     return {};
 }
 
-static ErrorOr<void> read_quantization_table(Core::Stream::SeekableStream& stream, JPGLoadingContext& context)
+static ErrorOr<void> read_quantization_table(AK::SeekableStream& stream, JPGLoadingContext& context)
 {
     i32 bytes_to_read = TRY(stream.read_value<BigEndian<u16>>()) - 2;
     TRY(ensure_bounds_okay(TRY(stream.tell()), bytes_to_read, context.data_size));
@@ -838,7 +838,7 @@ static ErrorOr<void> read_quantization_table(Core::Stream::SeekableStream& strea
     return {};
 }
 
-static ErrorOr<void> skip_marker_with_length(Core::Stream::Stream& stream)
+static ErrorOr<void> skip_marker_with_length(AK::Stream& stream)
 {
     u16 bytes_to_skip = TRY(stream.read_value<BigEndian<u16>>()) - 2;
     TRY(stream.discard(bytes_to_skip));
@@ -1086,7 +1086,7 @@ static ErrorOr<void> compose_bitmap(JPGLoadingContext& context, Vector<Macrobloc
     return {};
 }
 
-static ErrorOr<void> parse_header(Core::Stream::SeekableStream& stream, JPGLoadingContext& context)
+static ErrorOr<void> parse_header(AK::SeekableStream& stream, JPGLoadingContext& context)
 {
     auto marker = TRY(read_marker_at_cursor(stream));
     if (marker != JPG_SOI) {
@@ -1163,7 +1163,7 @@ static ErrorOr<void> parse_header(Core::Stream::SeekableStream& stream, JPGLoadi
     VERIFY_NOT_REACHED();
 }
 
-static ErrorOr<void> scan_huffman_stream(Core::Stream::SeekableStream& stream, JPGLoadingContext& context)
+static ErrorOr<void> scan_huffman_stream(AK::SeekableStream& stream, JPGLoadingContext& context)
 {
     u8 last_byte;
     u8 current_byte = TRY(stream.read_value<u8>());

Userland/Libraries/LibGfx/QOILoader.cpp

@@ -21,7 +21,7 @@ static constexpr u8 QOI_OP_RUN = 0b11000000;
 static constexpr u8 QOI_MASK_2 = 0b11000000;
 static constexpr u8 END_MARKER[] = { 0, 0, 0, 0, 0, 0, 0, 1 };
 
-static ErrorOr<QOIHeader> decode_qoi_header(Core::Stream::Stream& stream)
+static ErrorOr<QOIHeader> decode_qoi_header(AK::Stream& stream)
 {
     auto header = TRY(stream.read_value<QOIHeader>());
     if (StringView { header.magic, array_size(header.magic) } != QOI_MAGIC)
@@ -31,7 +31,7 @@ static ErrorOr<QOIHeader> decode_qoi_header(Core::Stream::Stream& stream)
     return header;
 }
 
-static ErrorOr<Color> decode_qoi_op_rgb(Core::Stream::Stream& stream, u8 first_byte, Color pixel)
+static ErrorOr<Color> decode_qoi_op_rgb(AK::Stream& stream, u8 first_byte, Color pixel)
 {
     VERIFY(first_byte == QOI_OP_RGB);
     u8 bytes[3];
@@ -41,7 +41,7 @@ static ErrorOr<Color> decode_qoi_op_rgb(Core::Stream::Stream& stream, u8 first_b
     return Color { bytes[0], bytes[1], bytes[2], pixel.alpha() };
 }
 
-static ErrorOr<Color> decode_qoi_op_rgba(Core::Stream::Stream& stream, u8 first_byte)
+static ErrorOr<Color> decode_qoi_op_rgba(AK::Stream& stream, u8 first_byte)
 {
     VERIFY(first_byte == QOI_OP_RGBA);
     u8 bytes[4];
@@ -49,7 +49,7 @@ static ErrorOr<Color> decode_qoi_op_rgba(Core::Stream::Stream& stream, u8 first_
     return Color { bytes[0], bytes[1], bytes[2], bytes[3] };
 }
 
-static ErrorOr<u8> decode_qoi_op_index(Core::Stream::Stream&, u8 first_byte)
+static ErrorOr<u8> decode_qoi_op_index(AK::Stream&, u8 first_byte)
 {
     VERIFY((first_byte & QOI_MASK_2) == QOI_OP_INDEX);
     u8 index = first_byte & ~QOI_MASK_2;
@@ -57,7 +57,7 @@ static ErrorOr<u8> decode_qoi_op_index(Core::Stream::Stream&, u8 first_byte)
     return index;
 }
 
-static ErrorOr<Color> decode_qoi_op_diff(Core::Stream::Stream&, u8 first_byte, Color pixel)
+static ErrorOr<Color> decode_qoi_op_diff(AK::Stream&, u8 first_byte, Color pixel)
 {
     VERIFY((first_byte & QOI_MASK_2) == QOI_OP_DIFF);
     u8 dr = (first_byte & 0b00110000) >> 4;
@@ -74,7 +74,7 @@ static ErrorOr<Color> decode_qoi_op_diff(Core::Stream::Stream&, u8 first_byte, C
     };
 }
 
-static ErrorOr<Color> decode_qoi_op_luma(Core::Stream::Stream& stream, u8 first_byte, Color pixel)
+static ErrorOr<Color> decode_qoi_op_luma(AK::Stream& stream, u8 first_byte, Color pixel)
 {
     VERIFY((first_byte & QOI_MASK_2) == QOI_OP_LUMA);
     auto byte = TRY(stream.read_value<u8>());
@@ -91,7 +91,7 @@ static ErrorOr<Color> decode_qoi_op_luma(Core::Stream::Stream& stream, u8 first_
     };
 }
 
-static ErrorOr<u8> decode_qoi_op_run(Core::Stream::Stream&, u8 first_byte)
+static ErrorOr<u8> decode_qoi_op_run(AK::Stream&, u8 first_byte)
 {
     VERIFY((first_byte & QOI_MASK_2) == QOI_OP_RUN);
     u8 run = first_byte & ~QOI_MASK_2;
@@ -107,7 +107,7 @@ static ErrorOr<u8> decode_qoi_op_run(Core::Stream::Stream&, u8 first_byte)
     return run;
 }
 
-static ErrorOr<void> decode_qoi_end_marker(Core::Stream::Stream& stream)
+static ErrorOr<void> decode_qoi_end_marker(AK::Stream& stream)
 {
     u8 bytes[array_size(END_MARKER)];
     TRY(stream.read_entire_buffer({ &bytes, array_size(bytes) }));
@@ -118,7 +118,7 @@ static ErrorOr<void> decode_qoi_end_marker(Core::Stream::Stream& stream)
     return {};
 }
 
-static ErrorOr<NonnullRefPtr<Bitmap>> decode_qoi_image(Core::Stream::Stream& stream, u32 width, u32 height)
+static ErrorOr<NonnullRefPtr<Bitmap>> decode_qoi_image(AK::Stream& stream, u32 width, u32 height)
 {
     // FIXME: Why is Gfx::Bitmap's size signed? Makes no sense whatsoever.
     if (width > NumericLimits<int>::max())
@@ -162,7 +162,7 @@ static ErrorOr<NonnullRefPtr<Bitmap>> decode_qoi_image(Core::Stream::Stream& str
     return { move(bitmap) };
 }
 
-QOIImageDecoderPlugin::QOIImageDecoderPlugin(NonnullOwnPtr<Core::Stream::Stream> stream)
+QOIImageDecoderPlugin::QOIImageDecoderPlugin(NonnullOwnPtr<AK::Stream> stream)
 {
     m_context = make<QOILoadingContext>();
     m_context->stream = move(stream);
@@ -234,7 +234,7 @@ ErrorOr<ImageFrameDescriptor> QOIImageDecoderPlugin::frame(size_t index)
     return *m_context->error;
 }
 
-ErrorOr<void> QOIImageDecoderPlugin::decode_header_and_update_context(Core::Stream::Stream& stream)
+ErrorOr<void> QOIImageDecoderPlugin::decode_header_and_update_context(AK::Stream& stream)
 {
     VERIFY(m_context->state < QOILoadingContext::State::HeaderDecoded);
     auto error_or_header = decode_qoi_header(stream);
@@ -248,7 +248,7 @@ ErrorOr<void> QOIImageDecoderPlugin::decode_header_and_update_context(Core::Stre
     return {};
 }
 
-ErrorOr<void> QOIImageDecoderPlugin::decode_image_and_update_context(Core::Stream::Stream& stream)
+ErrorOr<void> QOIImageDecoderPlugin::decode_image_and_update_context(AK::Stream& stream)
 {
     VERIFY(m_context->state < QOILoadingContext::State::ImageDecoded);
     auto error_or_bitmap = decode_qoi_image(stream, m_context->header.width, m_context->header.height);

Userland/Libraries/LibGfx/QOILoader.h

@@ -32,7 +32,7 @@ struct QOILoadingContext {
         Error,
     };
     State state { State::NotDecoded };
-    OwnPtr<Core::Stream::Stream> stream {};
+    OwnPtr<AK::Stream> stream {};
     QOIHeader header {};
     RefPtr<Bitmap> bitmap;
     Optional<Error> error;
@@ -56,10 +56,10 @@ public:
     virtual ErrorOr<Optional<ReadonlyBytes>> icc_data() override;
 
 private:
-    ErrorOr<void> decode_header_and_update_context(Core::Stream::Stream&);
-    ErrorOr<void> decode_image_and_update_context(Core::Stream::Stream&);
+    ErrorOr<void> decode_header_and_update_context(AK::Stream&);
+    ErrorOr<void> decode_image_and_update_context(AK::Stream&);
 
-    QOIImageDecoderPlugin(NonnullOwnPtr<Core::Stream::Stream>);
+    QOIImageDecoderPlugin(NonnullOwnPtr<AK::Stream>);
 
     OwnPtr<QOILoadingContext> m_context;
 };

Userland/Libraries/LibHTTP/HttpsJob.h

@@ -31,7 +31,7 @@ public:
     Function<Vector<TLS::Certificate>()> on_certificate_requested;
 
 private:
-    explicit HttpsJob(HttpRequest&& request, Core::Stream::Stream& output_stream)
+    explicit HttpsJob(HttpRequest&& request, AK::Stream& output_stream)
         : Job(move(request), output_stream)
     {
     }

Userland/Libraries/LibHTTP/Job.cpp

@@ -86,7 +86,7 @@ static ErrorOr<ByteBuffer> handle_content_encoding(ByteBuffer const& buf, Deprec
     return buf;
 }
 
-Job::Job(HttpRequest&& request, Core::Stream::Stream& output_stream)
+Job::Job(HttpRequest&& request, AK::Stream& output_stream)
     : Core::NetworkJob(output_stream)
     , m_request(move(request))
 {

Userland/Libraries/LibHTTP/Job.h

@@ -19,7 +19,7 @@ class Job : public Core::NetworkJob {
     C_OBJECT(Job);
 
 public:
-    explicit Job(HttpRequest&&, Core::Stream::Stream&);
+    explicit Job(HttpRequest&&, AK::Stream&);
     virtual ~Job() override = default;
 
     virtual void start(Core::Stream::Socket&) override;

Userland/Libraries/LibIPC/Decoder.h

@@ -32,7 +32,7 @@ inline ErrorOr<T> decode(Decoder&)
 
 class Decoder {
 public:
-    Decoder(Core::Stream::Stream& stream, Core::Stream::LocalSocket& socket)
+    Decoder(AK::Stream& stream, Core::Stream::LocalSocket& socket)
         : m_stream(stream)
         , m_socket(socket)
     {
@@ -59,7 +59,7 @@ public:
     Core::Stream::LocalSocket& socket() { return m_socket; }
 
 private:
-    Core::Stream::Stream& m_stream;
+    AK::Stream& m_stream;
     Core::Stream::LocalSocket& m_socket;
 };
 

Userland/Libraries/LibJS/Print.h

@@ -15,7 +15,7 @@
 namespace JS {
 struct PrintContext {
     JS::VM& vm;
-    Core::Stream::Stream& stream;
+    AK::Stream& stream;
     bool strip_ansi { false };
 };
 

Userland/Libraries/LibLine/Editor.cpp

@@ -1574,7 +1574,7 @@ void Editor::strip_styles(bool strip_anchored)
     m_refresh_needed = true;
 }
 
-ErrorOr<void> Editor::reposition_cursor(Core::Stream::Stream& stream, bool to_end)
+ErrorOr<void> Editor::reposition_cursor(AK::Stream& stream, bool to_end)
 {
     auto cursor = m_cursor;
     auto saved_cursor = m_cursor;
@@ -1596,12 +1596,12 @@ ErrorOr<void> Editor::reposition_cursor(Core::Stream::Stream& stream, bool to_en
     return {};
 }
 
-ErrorOr<void> VT::move_absolute(u32 row, u32 col, Core::Stream::Stream& stream)
+ErrorOr<void> VT::move_absolute(u32 row, u32 col, AK::Stream& stream)
 {
     return stream.write_entire_buffer(DeprecatedString::formatted("\033[{};{}H", row, col).bytes());
 }
 
-ErrorOr<void> VT::move_relative(int row, int col, Core::Stream::Stream& stream)
+ErrorOr<void> VT::move_relative(int row, int col, AK::Stream& stream)
 {
     char x_op = 'A', y_op = 'D';
 
@@ -1753,7 +1753,7 @@ DeprecatedString Style::to_deprecated_string() const
     return builder.to_deprecated_string();
 }
 
-ErrorOr<void> VT::apply_style(Style const& style, Core::Stream::Stream& stream, bool is_starting)
+ErrorOr<void> VT::apply_style(Style const& style, AK::Stream& stream, bool is_starting)
 {
     if (is_starting) {
         TRY(stream.write_entire_buffer(DeprecatedString::formatted("\033[{};{};{}m{}{}{}",
@@ -1771,7 +1771,7 @@ ErrorOr<void> VT::apply_style(Style const& style, Core::Stream::Stream& stream,
     return {};
 }
 
-ErrorOr<void> VT::clear_lines(size_t count_above, size_t count_below, Core::Stream::Stream& stream)
+ErrorOr<void> VT::clear_lines(size_t count_above, size_t count_below, AK::Stream& stream)
 {
     if (count_below + count_above == 0) {
         TRY(stream.write_entire_buffer("\033[2K"sv.bytes()));
@@ -1790,17 +1790,17 @@ ErrorOr<void> VT::clear_lines(size_t count_above, size_t count_below, Core::Stre
     return {};
 }
 
-ErrorOr<void> VT::save_cursor(Core::Stream::Stream& stream)
+ErrorOr<void> VT::save_cursor(AK::Stream& stream)
 {
     return stream.write_entire_buffer("\033[s"sv.bytes());
 }
 
-ErrorOr<void> VT::restore_cursor(Core::Stream::Stream& stream)
+ErrorOr<void> VT::restore_cursor(AK::Stream& stream)
 {
     return stream.write_entire_buffer("\033[u"sv.bytes());
 }
 
-ErrorOr<void> VT::clear_to_end_of_line(Core::Stream::Stream& stream)
+ErrorOr<void> VT::clear_to_end_of_line(AK::Stream& stream)
 {
     return stream.write_entire_buffer("\033[K"sv.bytes());
 }

Userland/Libraries/LibLine/Editor.h

@@ -393,7 +393,7 @@ private:
     }
 
     void recalculate_origin();
-    ErrorOr<void> reposition_cursor(Core::Stream::Stream&, bool to_end = false);
+    ErrorOr<void> reposition_cursor(AK::Stream&, bool to_end = false);
 
     struct CodepointRange {
         size_t start { 0 };

Userland/Libraries/LibLine/VT.h

@@ -13,13 +13,13 @@
 namespace Line {
 namespace VT {
 
-ErrorOr<void> save_cursor(Core::Stream::Stream&);
-ErrorOr<void> restore_cursor(Core::Stream::Stream&);
-ErrorOr<void> clear_to_end_of_line(Core::Stream::Stream&);
-ErrorOr<void> clear_lines(size_t count_above, size_t count_below, Core::Stream::Stream&);
-ErrorOr<void> move_relative(int x, int y, Core::Stream::Stream&);
-ErrorOr<void> move_absolute(u32 x, u32 y, Core::Stream::Stream&);
-ErrorOr<void> apply_style(Style const&, Core::Stream::Stream&, bool is_starting = true);
+ErrorOr<void> save_cursor(AK::Stream&);
+ErrorOr<void> restore_cursor(AK::Stream&);
+ErrorOr<void> clear_to_end_of_line(AK::Stream&);
+ErrorOr<void> clear_lines(size_t count_above, size_t count_below, AK::Stream&);
+ErrorOr<void> move_relative(int x, int y, AK::Stream&);
+ErrorOr<void> move_absolute(u32 x, u32 y, AK::Stream&);
+ErrorOr<void> apply_style(Style const&, AK::Stream&, bool is_starting = true);
 
 }
 }

Userland/Libraries/LibProtocol/Request.cpp

@@ -20,7 +20,7 @@ bool Request::stop()
     return m_client->stop_request({}, *this);
 }
 
-void Request::stream_into(Core::Stream::Stream& stream)
+void Request::stream_into(AK::Stream& stream)
 {
     VERIFY(!m_internal_stream_data);
 

Userland/Libraries/LibProtocol/Request.h

@@ -37,7 +37,7 @@ public:
     int fd() const { return m_fd; }
     bool stop();
 
-    void stream_into(Core::Stream::Stream&);
+    void stream_into(AK::Stream&);
 
     bool should_buffer_all_input() const { return m_should_buffer_all_input; }
     /// Note: Will override `on_finish', and `on_headers_received', and expects `on_buffered_request_finish' to be set!
@@ -74,12 +74,12 @@ private:
     };
 
     struct InternalStreamData {
-        InternalStreamData(NonnullOwnPtr<Core::Stream::Stream> stream)
+        InternalStreamData(NonnullOwnPtr<AK::Stream> stream)
             : read_stream(move(stream))
         {
         }
 
-        NonnullOwnPtr<Core::Stream::Stream> read_stream;
+        NonnullOwnPtr<AK::Stream> read_stream;
         RefPtr<Core::Notifier> read_notifier;
         bool success;
         u32 total_size { 0 };

Userland/Libraries/LibSQL/Heap.cpp

@@ -142,9 +142,9 @@ ErrorOr<void> Heap::seek_block(u32 block)
     }
 
     if (block == m_end_of_file)
-        TRY(m_file->seek(0, Core::Stream::SeekMode::FromEndPosition));
+        TRY(m_file->seek(0, SeekMode::FromEndPosition));
     else
-        TRY(m_file->seek(block * BLOCKSIZE, Core::Stream::SeekMode::SetPosition));
+        TRY(m_file->seek(block * BLOCKSIZE, SeekMode::SetPosition));
 
     return {};
 }

Userland/Libraries/LibWasm/Parser/Parser.cpp

@@ -13,7 +13,7 @@
 
 namespace Wasm {
 
-ParseError with_eof_check(Core::Stream::Stream const& stream, ParseError error_if_not_eof)
+ParseError with_eof_check(AK::Stream const& stream, ParseError error_if_not_eof)
 {
     if (stream.is_eof())
         return ParseError::UnexpectedEof;
@@ -21,7 +21,7 @@ ParseError with_eof_check(Core::Stream::Stream const& stream, ParseError error_i
 }
 
 template<typename T>
-static auto parse_vector(Core::Stream::Stream& stream)
+static auto parse_vector(AK::Stream& stream)
 {
     ScopeLogger<WASM_BINPARSER_DEBUG> logger;
     if constexpr (requires { T::parse(stream); }) {
@@ -72,7 +72,7 @@ static auto parse_vector(Core::Stream::Stream& stream)
     }
 }
 
-static ParseResult<DeprecatedString> parse_name(Core::Stream::Stream& stream)
+static ParseResult<DeprecatedString> parse_name(AK::Stream& stream)
 {
     ScopeLogger<WASM_BINPARSER_DEBUG> logger;
     auto data = parse_vector<u8>(stream);
@@ -88,8 +88,8 @@ struct ParseUntilAnyOfResult {
     Vector<T> values;
 };
 template<typename T, u8... terminators, typename... Args>
-static ParseResult<ParseUntilAnyOfResult<T>> parse_until_any_of(Core::Stream::Stream& stream, Args&... args)
-requires(requires(Core::Stream::Stream& stream, Args... args) { T::parse(stream, args...); })
+static ParseResult<ParseUntilAnyOfResult<T>> parse_until_any_of(AK::Stream& stream, Args&... args)
+requires(requires(AK::Stream& stream, Args... args) { T::parse(stream, args...); })
 {
     ScopeLogger<WASM_BINPARSER_DEBUG> logger;
     ReconsumableStream new_stream { stream };
@@ -118,7 +118,7 @@ requires(requires(Core::Stream::Stream& stream, Args... args) { T::parse(stream,
     }
 }
 
-ParseResult<ValueType> ValueType::parse(Core::Stream::Stream& stream)
+ParseResult<ValueType> ValueType::parse(AK::Stream& stream)
 {
     ScopeLogger<WASM_BINPARSER_DEBUG> logger("ValueType"sv);
     auto tag_or_error = stream.read_value<u8>();
@@ -145,7 +145,7 @@ ParseResult<ValueType> ValueType::parse(Core::Stream::Stream& stream)
     }
 }
 
-ParseResult<ResultType> ResultType::parse(Core::Stream::Stream& stream)
+ParseResult<ResultType> ResultType::parse(AK::Stream& stream)
 {
     ScopeLogger<WASM_BINPARSER_DEBUG> logger("ResultType"sv);
     auto types = parse_vector<ValueType>(stream);
@@ -154,7 +154,7 @@ ParseResult<ResultType> ResultType::parse(Core::Stream::Stream& stream)
     return ResultType { types.release_value() };
 }
 
-ParseResult<FunctionType> FunctionType::parse(Core::Stream::Stream& stream)
+ParseResult<FunctionType> FunctionType::parse(AK::Stream& stream)
 {
     ScopeLogger<WASM_BINPARSER_DEBUG> logger("FunctionType"sv);
     auto tag_or_error = stream.read_value<u8>();
@@ -178,7 +178,7 @@ ParseResult<FunctionType> FunctionType::parse(Core::Stream::Stream& stream)
     return FunctionType { parameters_result.release_value(), results_result.release_value() };
 }
 
-ParseResult<Limits> Limits::parse(Core::Stream::Stream& stream)
+ParseResult<Limits> Limits::parse(AK::Stream& stream)
 {
     ScopeLogger<WASM_BINPARSER_DEBUG> logger("Limits"sv);
     auto flag_or_error = stream.read_value<u8>();
@@ -207,7 +207,7 @@ ParseResult<Limits> Limits::parse(Core::Stream::Stream& stream)
     return Limits { static_cast<u32>(min), move(max) };
 }
 
-ParseResult<MemoryType> MemoryType::parse(Core::Stream::Stream& stream)
+ParseResult<MemoryType> MemoryType::parse(AK::Stream& stream)
 {
     ScopeLogger<WASM_BINPARSER_DEBUG> logger("MemoryType"sv);
     auto limits_result = Limits::parse(stream);
@@ -216,7 +216,7 @@ ParseResult<MemoryType> MemoryType::parse(Core::Stream::Stream& stream)
     return MemoryType { limits_result.release_value() };
 }
 
-ParseResult<TableType> TableType::parse(Core::Stream::Stream& stream)
+ParseResult<TableType> TableType::parse(AK::Stream& stream)
 {
     ScopeLogger<WASM_BINPARSER_DEBUG> logger("TableType"sv);
     auto type_result = ValueType::parse(stream);
@@ -230,7 +230,7 @@ ParseResult<TableType> TableType::parse(Core::Stream::Stream& stream)
     return TableType { type_result.release_value(), limits_result.release_value() };
 }
 
-ParseResult<GlobalType> GlobalType::parse(Core::Stream::Stream& stream)
+ParseResult<GlobalType> GlobalType::parse(AK::Stream& stream)
 {
     ScopeLogger<WASM_BINPARSER_DEBUG> logger("GlobalType"sv);
     auto type_result = ValueType::parse(stream);
@@ -249,7 +249,7 @@ ParseResult<GlobalType> GlobalType::parse(Core::Stream::Stream& stream)
     return GlobalType { type_result.release_value(), mutable_ == 0x01 };
 }
 
-ParseResult<BlockType> BlockType::parse(Core::Stream::Stream& stream)
+ParseResult<BlockType> BlockType::parse(AK::Stream& stream)
 {
     ScopeLogger<WASM_BINPARSER_DEBUG> logger("BlockType"sv);
     auto kind_or_error = stream.read_value<u8>();
@@ -282,7 +282,7 @@ ParseResult<BlockType> BlockType::parse(Core::Stream::Stream& stream)
     return BlockType { TypeIndex(index_value) };
 }
 
-ParseResult<Vector<Instruction>> Instruction::parse(Core::Stream::Stream& stream, InstructionPointer& ip)
+ParseResult<Vector<Instruction>> Instruction::parse(AK::Stream& stream, InstructionPointer& ip)
 {
     struct NestedInstructionState {
         Vector<Instruction> prior_instructions;
@@ -782,7 +782,7 @@ ParseResult<Vector<Instruction>> Instruction::parse(Core::Stream::Stream& stream
     return resulting_instructions;
 }
 
-ParseResult<CustomSection> CustomSection::parse(Core::Stream::Stream& stream)
+ParseResult<CustomSection> CustomSection::parse(AK::Stream& stream)
 {
     ScopeLogger<WASM_BINPARSER_DEBUG> logger("CustomSection"sv);
     auto name = parse_name(stream);
@@ -808,7 +808,7 @@ ParseResult<CustomSection> CustomSection::parse(Core::Stream::Stream& stream)
     return CustomSection(name.release_value(), move(data_buffer));
 }
 
-ParseResult<TypeSection> TypeSection::parse(Core::Stream::Stream& stream)
+ParseResult<TypeSection> TypeSection::parse(AK::Stream& stream)
 {
     ScopeLogger<WASM_BINPARSER_DEBUG> logger("TypeSection"sv);
     auto types = parse_vector<FunctionType>(stream);
@@ -817,7 +817,7 @@ ParseResult<TypeSection> TypeSection::parse(Core::Stream::Stream& stream)
     return TypeSection { types.release_value() };
 }
 
-ParseResult<ImportSection::Import> ImportSection::Import::parse(Core::Stream::Stream& stream)
+ParseResult<ImportSection::Import> ImportSection::Import::parse(AK::Stream& stream)
 {
     ScopeLogger<WASM_BINPARSER_DEBUG> logger("Import"sv);
     auto module = parse_name(stream);
@@ -850,7 +850,7 @@ ParseResult<ImportSection::Import> ImportSection::Import::parse(Core::Stream::St
     }
 }
 
-ParseResult<ImportSection> ImportSection::parse(Core::Stream::Stream& stream)
+ParseResult<ImportSection> ImportSection::parse(AK::Stream& stream)
 {
     ScopeLogger<WASM_BINPARSER_DEBUG> logger("ImportSection"sv);
     auto imports = parse_vector<Import>(stream);
@@ -859,7 +859,7 @@ ParseResult<ImportSection> ImportSection::parse(Core::Stream::Stream& stream)
     return ImportSection { imports.release_value() };
 }
 
-ParseResult<FunctionSection> FunctionSection::parse(Core::Stream::Stream& stream)
+ParseResult<FunctionSection> FunctionSection::parse(AK::Stream& stream)
 {
     ScopeLogger<WASM_BINPARSER_DEBUG> logger("FunctionSection"sv);
     auto indices = parse_vector<size_t>(stream);
@@ -874,7 +874,7 @@ ParseResult<FunctionSection> FunctionSection::parse(Core::Stream::Stream& stream
     return FunctionSection { move(typed_indices) };
 }
 
-ParseResult<TableSection::Table> TableSection::Table::parse(Core::Stream::Stream& stream)
+ParseResult<TableSection::Table> TableSection::Table::parse(AK::Stream& stream)
 {
     ScopeLogger<WASM_BINPARSER_DEBUG> logger("Table"sv);
     auto type = TableType::parse(stream);
@@ -883,7 +883,7 @@ ParseResult<TableSection::Table> TableSection::Table::parse(Core::Stream::Stream
     return Table { type.release_value() };
 }
 
-ParseResult<TableSection> TableSection::parse(Core::Stream::Stream& stream)
+ParseResult<TableSection> TableSection::parse(AK::Stream& stream)
 {
     ScopeLogger<WASM_BINPARSER_DEBUG> logger("TableSection"sv);
     auto tables = parse_vector<Table>(stream);
@@ -892,7 +892,7 @@ ParseResult<TableSection> TableSection::parse(Core::Stream::Stream& stream)
     return TableSection { tables.release_value() };
 }
 
-ParseResult<MemorySection::Memory> MemorySection::Memory::parse(Core::Stream::Stream& stream)
+ParseResult<MemorySection::Memory> MemorySection::Memory::parse(AK::Stream& stream)
 {
     ScopeLogger<WASM_BINPARSER_DEBUG> logger("Memory"sv);
     auto type = MemoryType::parse(stream);
@@ -901,7 +901,7 @@ ParseResult<MemorySection::Memory> MemorySection::Memory::parse(Core::Stream::St
     return Memory { type.release_value() };
 }
 
-ParseResult<MemorySection> MemorySection::parse(Core::Stream::Stream& stream)
+ParseResult<MemorySection> MemorySection::parse(AK::Stream& stream)
 {
     ScopeLogger<WASM_BINPARSER_DEBUG> logger("MemorySection"sv);
     auto memories = parse_vector<Memory>(stream);
@@ -910,7 +910,7 @@ ParseResult<MemorySection> MemorySection::parse(Core::Stream::Stream& stream)
     return MemorySection { memories.release_value() };
 }
 
-ParseResult<Expression> Expression::parse(Core::Stream::Stream& stream)
+ParseResult<Expression> Expression::parse(AK::Stream& stream)
 {
     ScopeLogger<WASM_BINPARSER_DEBUG> logger("Expression"sv);
     InstructionPointer ip { 0 };
@@ -921,7 +921,7 @@ ParseResult<Expression> Expression::parse(Core::Stream::Stream& stream)
     return Expression { move(instructions.value().values) };
 }
 
-ParseResult<GlobalSection::Global> GlobalSection::Global::parse(Core::Stream::Stream& stream)
+ParseResult<GlobalSection::Global> GlobalSection::Global::parse(AK::Stream& stream)
 {
     ScopeLogger<WASM_BINPARSER_DEBUG> logger("Global"sv);
     auto type = GlobalType::parse(stream);
@@ -933,7 +933,7 @@ ParseResult<GlobalSection::Global> GlobalSection::Global::parse(Core::Stream::St
     return Global { type.release_value(), exprs.release_value() };
 }
 
-ParseResult<GlobalSection> GlobalSection::parse(Core::Stream::Stream& stream)
+ParseResult<GlobalSection> GlobalSection::parse(AK::Stream& stream)
 {
     ScopeLogger<WASM_BINPARSER_DEBUG> logger("GlobalSection"sv);
     auto result = parse_vector<Global>(stream);
@@ -942,7 +942,7 @@ ParseResult<GlobalSection> GlobalSection::parse(Core::Stream::Stream& stream)
     return GlobalSection { result.release_value() };
 }
 
-ParseResult<ExportSection::Export> ExportSection::Export::parse(Core::Stream::Stream& stream)
+ParseResult<ExportSection::Export> ExportSection::Export::parse(AK::Stream& stream)
 {
     ScopeLogger<WASM_BINPARSER_DEBUG> logger("Export"sv);
     auto name = parse_name(stream);
@@ -973,7 +973,7 @@ ParseResult<ExportSection::Export> ExportSection::Export::parse(Core::Stream::St
     }
 }
 
-ParseResult<ExportSection> ExportSection::parse(Core::Stream::Stream& stream)
+ParseResult<ExportSection> ExportSection::parse(AK::Stream& stream)
 {
     ScopeLogger<WASM_BINPARSER_DEBUG> logger("ExportSection"sv);
     auto result = parse_vector<Export>(stream);
@@ -982,7 +982,7 @@ ParseResult<ExportSection> ExportSection::parse(Core::Stream::Stream& stream)
     return ExportSection { result.release_value() };
 }
 
-ParseResult<StartSection::StartFunction> StartSection::StartFunction::parse(Core::Stream::Stream& stream)
+ParseResult<StartSection::StartFunction> StartSection::StartFunction::parse(AK::Stream& stream)
 {
     ScopeLogger<WASM_BINPARSER_DEBUG> logger("StartFunction"sv);
     auto index = GenericIndexParser<FunctionIndex>::parse(stream);
@@ -991,7 +991,7 @@ ParseResult<StartSection::StartFunction> StartSection::StartFunction::parse(Core
     return StartFunction { index.release_value() };
 }
 
-ParseResult<StartSection> StartSection::parse(Core::Stream::Stream& stream)
+ParseResult<StartSection> StartSection::parse(AK::Stream& stream)
 {
     ScopeLogger<WASM_BINPARSER_DEBUG> logger("StartSection"sv);
     auto result = StartFunction::parse(stream);
@@ -1000,7 +1000,7 @@ ParseResult<StartSection> StartSection::parse(Core::Stream::Stream& stream)
     return StartSection { result.release_value() };
 }
 
-ParseResult<ElementSection::SegmentType0> ElementSection::SegmentType0::parse(Core::Stream::Stream& stream)
+ParseResult<ElementSection::SegmentType0> ElementSection::SegmentType0::parse(AK::Stream& stream)
 {
     auto expression = Expression::parse(stream);
     if (expression.is_error())
@@ -1012,7 +1012,7 @@ ParseResult<ElementSection::SegmentType0> ElementSection::SegmentType0::parse(Co
     return SegmentType0 { indices.release_value(), Active { 0, expression.release_value() } };
 }
 
-ParseResult<ElementSection::SegmentType1> ElementSection::SegmentType1::parse(Core::Stream::Stream& stream)
+ParseResult<ElementSection::SegmentType1> ElementSection::SegmentType1::parse(AK::Stream& stream)
 {
     auto kind_or_error = stream.read_value<u8>();
     if (kind_or_error.is_error())
@@ -1028,49 +1028,49 @@ ParseResult<ElementSection::SegmentType1> ElementSection::SegmentType1::parse(Co
     return SegmentType1 { indices.release_value() };
 }
 
-ParseResult<ElementSection::SegmentType2> ElementSection::SegmentType2::parse(Core::Stream::Stream& stream)
+ParseResult<ElementSection::SegmentType2> ElementSection::SegmentType2::parse(AK::Stream& stream)
 {
     dbgln("Type 2");
     (void)stream;
     return ParseError::NotImplemented;
 }
 
-ParseResult<ElementSection::SegmentType3> ElementSection::SegmentType3::parse(Core::Stream::Stream& stream)
+ParseResult<ElementSection::SegmentType3> ElementSection::SegmentType3::parse(AK::Stream& stream)
 {
     dbgln("Type 3");
     (void)stream;
     return ParseError::NotImplemented;
 }
 
-ParseResult<ElementSection::SegmentType4> ElementSection::SegmentType4::parse(Core::Stream::Stream& stream)
+ParseResult<ElementSection::SegmentType4> ElementSection::SegmentType4::parse(AK::Stream& stream)
 {
     dbgln("Type 4");
     (void)stream;
     return ParseError::NotImplemented;
 }
 
-ParseResult<ElementSection::SegmentType5> ElementSection::SegmentType5::parse(Core::Stream::Stream& stream)
+ParseResult<ElementSection::SegmentType5> ElementSection::SegmentType5::parse(AK::Stream& stream)
 {
     dbgln("Type 5");
     (void)stream;
     return ParseError::NotImplemented;
 }
 
-ParseResult<ElementSection::SegmentType6> ElementSection::SegmentType6::parse(Core::Stream::Stream& stream)
+ParseResult<ElementSection::SegmentType6> ElementSection::SegmentType6::parse(AK::Stream& stream)
 {
     dbgln("Type 6");
     (void)stream;
     return ParseError::NotImplemented;
 }
 
-ParseResult<ElementSection::SegmentType7> ElementSection::SegmentType7::parse(Core::Stream::Stream& stream)
+ParseResult<ElementSection::SegmentType7> ElementSection::SegmentType7::parse(AK::Stream& stream)
 {
     dbgln("Type 7");
     (void)stream;
     return ParseError::NotImplemented;
 }
 
-ParseResult<ElementSection::Element> ElementSection::Element::parse(Core::Stream::Stream& stream)
+ParseResult<ElementSection::Element> ElementSection::Element::parse(AK::Stream& stream)
 {
     ScopeLogger<WASM_BINPARSER_DEBUG> logger("Element"sv);
     auto tag_or_error = stream.read_value<u8>();
@@ -1139,7 +1139,7 @@ ParseResult<ElementSection::Element> ElementSection::Element::parse(Core::Stream
     }
 }
 
-ParseResult<ElementSection> ElementSection::parse(Core::Stream::Stream& stream)
+ParseResult<ElementSection> ElementSection::parse(AK::Stream& stream)
 {
     ScopeLogger<WASM_BINPARSER_DEBUG> logger("ElementSection"sv);
     auto result = parse_vector<Element>(stream);
@@ -1148,7 +1148,7 @@ ParseResult<ElementSection> ElementSection::parse(Core::Stream::Stream& stream)
     return ElementSection { result.release_value() };
 }
 
-ParseResult<Locals> Locals::parse(Core::Stream::Stream& stream)
+ParseResult<Locals> Locals::parse(AK::Stream& stream)
 {
     ScopeLogger<WASM_BINPARSER_DEBUG> logger("Locals"sv);
     size_t count;
@@ -1166,7 +1166,7 @@ ParseResult<Locals> Locals::parse(Core::Stream::Stream& stream)
     return Locals { static_cast<u32>(count), type.release_value() };
 }
 
-ParseResult<CodeSection::Func> CodeSection::Func::parse(Core::Stream::Stream& stream)
+ParseResult<CodeSection::Func> CodeSection::Func::parse(AK::Stream& stream)
 {
     ScopeLogger<WASM_BINPARSER_DEBUG> logger("Func"sv);
     auto locals = parse_vector<Locals>(stream);
@@ -1178,7 +1178,7 @@ ParseResult<CodeSection::Func> CodeSection::Func::parse(Core::Stream::Stream& st
     return Func { locals.release_value(), body.release_value() };
 }
 
-ParseResult<CodeSection::Code> CodeSection::Code::parse(Core::Stream::Stream& stream)
+ParseResult<CodeSection::Code> CodeSection::Code::parse(AK::Stream& stream)
 {
     ScopeLogger<WASM_BINPARSER_DEBUG> logger("Code"sv);
     size_t size;
@@ -1195,7 +1195,7 @@ ParseResult<CodeSection::Code> CodeSection::Code::parse(Core::Stream::Stream& st
     return Code { static_cast<u32>(size), func.release_value() };
 }
 
-ParseResult<CodeSection> CodeSection::parse(Core::Stream::Stream& stream)
+ParseResult<CodeSection> CodeSection::parse(AK::Stream& stream)
 {
     ScopeLogger<WASM_BINPARSER_DEBUG> logger("CodeSection"sv);
     auto result = parse_vector<Code>(stream);
@@ -1204,7 +1204,7 @@ ParseResult<CodeSection> CodeSection::parse(Core::Stream::Stream& stream)
     return CodeSection { result.release_value() };
 }
 
-ParseResult<DataSection::Data> DataSection::Data::parse(Core::Stream::Stream& stream)
+ParseResult<DataSection::Data> DataSection::Data::parse(AK::Stream& stream)
 {
     ScopeLogger<WASM_BINPARSER_DEBUG> logger("Data"sv);
     auto tag_or_error = stream.read_value<u8>();
@@ -1246,7 +1246,7 @@ ParseResult<DataSection::Data> DataSection::Data::parse(Core::Stream::Stream& st
     VERIFY_NOT_REACHED();
 }
 
-ParseResult<DataSection> DataSection::parse(Core::Stream::Stream& stream)
+ParseResult<DataSection> DataSection::parse(AK::Stream& stream)
 {
     ScopeLogger<WASM_BINPARSER_DEBUG> logger("DataSection"sv);
     auto data = parse_vector<Data>(stream);
@@ -1256,7 +1256,7 @@ ParseResult<DataSection> DataSection::parse(Core::Stream::Stream& stream)
     return DataSection { data.release_value() };
 }
 
-ParseResult<DataCountSection> DataCountSection::parse([[maybe_unused]] Core::Stream::Stream& stream)
+ParseResult<DataCountSection> DataCountSection::parse([[maybe_unused]] AK::Stream& stream)
 {
     ScopeLogger<WASM_BINPARSER_DEBUG> logger("DataCountSection"sv);
     u32 value;
@@ -1272,7 +1272,7 @@ ParseResult<DataCountSection> DataCountSection::parse([[maybe_unused]] Core::Str
     return DataCountSection { value };
 }
 
-ParseResult<Module> Module::parse(Core::Stream::Stream& stream)
+ParseResult<Module> Module::parse(AK::Stream& stream)
 {
     ScopeLogger<WASM_BINPARSER_DEBUG> logger("Module"sv);
     u8 buf[4];

Userland/Libraries/LibWasm/Printer/Printer.h

@@ -18,7 +18,7 @@ DeprecatedString instruction_name(OpCode const& opcode);
 Optional<OpCode> instruction_from_name(StringView name);
 
 struct Printer {
-    explicit Printer(Core::Stream::Stream& stream, size_t initial_indent = 0)
+    explicit Printer(AK::Stream& stream, size_t initial_indent = 0)
         : m_stream(stream)
         , m_indent(initial_indent)
     {
@@ -72,7 +72,7 @@ private:
         m_stream.write_entire_buffer(builder.string_view().bytes()).release_value_but_fixme_should_propagate_errors();
     }
 
-    Core::Stream::Stream& m_stream;
+    AK::Stream& m_stream;
     size_t m_indent { 0 };
 };
 

Userland/Libraries/LibWasm/Types.h

@@ -59,11 +59,11 @@ AK_TYPEDEF_DISTINCT_ORDERED_ID(size_t, LabelIndex);
 AK_TYPEDEF_DISTINCT_ORDERED_ID(size_t, DataIndex);
 AK_TYPEDEF_DISTINCT_NUMERIC_GENERAL(u64, InstructionPointer, Arithmetic, Comparison, Flags, Increment);
 
-ParseError with_eof_check(Core::Stream::Stream const& stream, ParseError error_if_not_eof);
+ParseError with_eof_check(AK::Stream const& stream, ParseError error_if_not_eof);
 
 template<typename T>
 struct GenericIndexParser {
-    static ParseResult<T> parse(Core::Stream::Stream& stream)
+    static ParseResult<T> parse(AK::Stream& stream)
     {
         size_t value;
         Core::Stream::WrapInAKInputStream wrapped_stream { stream };
@@ -73,9 +73,9 @@ struct GenericIndexParser {
     }
 };
 
-class ReconsumableStream : public Core::Stream::Stream {
+class ReconsumableStream : public AK::Stream {
 public:
-    explicit ReconsumableStream(Core::Stream::Stream& stream)
+    explicit ReconsumableStream(AK::Stream& stream)
         : m_stream(stream)
     {
     }
@@ -133,13 +133,13 @@ private:
         m_stream.close();
     }
 
-    Core::Stream::Stream& m_stream;
+    AK::Stream& m_stream;
     Vector<u8, 8> m_buffer;
 };
 
-class ConstrainedStream : public Core::Stream::Stream {
+class ConstrainedStream : public AK::Stream {
 public:
-    explicit ConstrainedStream(Core::Stream::Stream& stream, size_t size)
+    explicit ConstrainedStream(AK::Stream& stream, size_t size)
         : m_stream(stream)
         , m_bytes_left(size)
     {
@@ -182,7 +182,7 @@ private:
         m_stream.close();
     }
 
-    Core::Stream::Stream& m_stream;
+    AK::Stream& m_stream;
     size_t m_bytes_left { 0 };
 };
 
@@ -211,7 +211,7 @@ public:
     auto is_numeric() const { return !is_reference(); }
     auto kind() const { return m_kind; }
 
-    static ParseResult<ValueType> parse(Core::Stream::Stream& stream);
+    static ParseResult<ValueType> parse(AK::Stream& stream);
 
     static DeprecatedString kind_name(Kind kind)
     {
@@ -250,7 +250,7 @@ public:
 
     auto const& types() const { return m_types; }
 
-    static ParseResult<ResultType> parse(Core::Stream::Stream& stream);
+    static ParseResult<ResultType> parse(AK::Stream& stream);
 
 private:
     Vector<ValueType> m_types;
@@ -268,7 +268,7 @@ public:
     auto& parameters() const { return m_parameters; }
     auto& results() const { return m_results; }
 
-    static ParseResult<FunctionType> parse(Core::Stream::Stream& stream);
+    static ParseResult<FunctionType> parse(AK::Stream& stream);
 
 private:
     Vector<ValueType> m_parameters;
@@ -287,7 +287,7 @@ public:
     auto min() const { return m_min; }
     auto& max() const { return m_max; }
 
-    static ParseResult<Limits> parse(Core::Stream::Stream& stream);
+    static ParseResult<Limits> parse(AK::Stream& stream);
 
 private:
     u32 m_min { 0 };
@@ -304,7 +304,7 @@ public:
 
     auto& limits() const { return m_limits; }
 
-    static ParseResult<MemoryType> parse(Core::Stream::Stream& stream);
+    static ParseResult<MemoryType> parse(AK::Stream& stream);
 
 private:
     Limits m_limits;
@@ -323,7 +323,7 @@ public:
     auto& limits() const { return m_limits; }
     auto& element_type() const { return m_element_type; }
 
-    static ParseResult<TableType> parse(Core::Stream::Stream& stream);
+    static ParseResult<TableType> parse(AK::Stream& stream);
 
 private:
     ValueType m_element_type;
@@ -342,7 +342,7 @@ public:
     auto& type() const { return m_type; }
     auto is_mutable() const { return m_is_mutable; }
 
-    static ParseResult<GlobalType> parse(Core::Stream::Stream& stream);
+    static ParseResult<GlobalType> parse(AK::Stream& stream);
 
 private:
     ValueType m_type;
@@ -388,7 +388,7 @@ public:
         return m_type_index;
     }
 
-    static ParseResult<BlockType> parse(Core::Stream::Stream& stream);
+    static ParseResult<BlockType> parse(AK::Stream& stream);
 
 private:
     Kind m_kind { Empty };
@@ -452,7 +452,7 @@ public:
     {
     }
 
-    static ParseResult<Vector<Instruction>> parse(Core::Stream::Stream& stream, InstructionPointer& ip);
+    static ParseResult<Vector<Instruction>> parse(AK::Stream& stream, InstructionPointer& ip);
 
     auto& opcode() const { return m_opcode; }
     auto& arguments() const { return m_arguments; }
@@ -499,7 +499,7 @@ public:
     auto& name() const { return m_name; }
     auto& contents() const { return m_contents; }
 
-    static ParseResult<CustomSection> parse(Core::Stream::Stream& stream);
+    static ParseResult<CustomSection> parse(AK::Stream& stream);
 
 private:
     DeprecatedString m_name;
@@ -517,7 +517,7 @@ public:
 
     auto& types() const { return m_types; }
 
-    static ParseResult<TypeSection> parse(Core::Stream::Stream& stream);
+    static ParseResult<TypeSection> parse(AK::Stream& stream);
 
 private:
     Vector<FunctionType> m_types;
@@ -539,7 +539,7 @@ public:
         auto& name() const { return m_name; }
         auto& description() const { return m_description; }
 
-        static ParseResult<Import> parse(Core::Stream::Stream& stream);
+        static ParseResult<Import> parse(AK::Stream& stream);
 
     private:
         template<typename T>
@@ -566,7 +566,7 @@ public:
 
     auto& imports() const { return m_imports; }
 
-    static ParseResult<ImportSection> parse(Core::Stream::Stream& stream);
+    static ParseResult<ImportSection> parse(AK::Stream& stream);
 
 private:
     Vector<Import> m_imports;
@@ -583,7 +583,7 @@ public:
 
     auto& types() const { return m_types; }
 
-    static ParseResult<FunctionSection> parse(Core::Stream::Stream& stream);
+    static ParseResult<FunctionSection> parse(AK::Stream& stream);
 
 private:
     Vector<TypeIndex> m_types;
@@ -600,7 +600,7 @@ public:
 
         auto& type() const { return m_type; }
 
-        static ParseResult<Table> parse(Core::Stream::Stream& stream);
+        static ParseResult<Table> parse(AK::Stream& stream);
 
     private:
         TableType m_type;
@@ -616,7 +616,7 @@ public:
 
     auto& tables() const { return m_tables; };
 
-    static ParseResult<TableSection> parse(Core::Stream::Stream& stream);
+    static ParseResult<TableSection> parse(AK::Stream& stream);
 
 private:
     Vector<Table> m_tables;
@@ -633,7 +633,7 @@ public:
 
         auto& type() const { return m_type; }
 
-        static ParseResult<Memory> parse(Core::Stream::Stream& stream);
+        static ParseResult<Memory> parse(AK::Stream& stream);
 
     private:
         MemoryType m_type;
@@ -649,7 +649,7 @@ public:
 
     auto& memories() const { return m_memories; }
 
-    static ParseResult<MemorySection> parse(Core::Stream::Stream& stream);
+    static ParseResult<MemorySection> parse(AK::Stream& stream);
 
 private:
     Vector<Memory> m_memories;
@@ -664,7 +664,7 @@ public:
 
     auto& instructions() const { return m_instructions; }
 
-    static ParseResult<Expression> parse(Core::Stream::Stream& stream);
+    static ParseResult<Expression> parse(AK::Stream& stream);
 
 private:
     Vector<Instruction> m_instructions;
@@ -683,7 +683,7 @@ public:
         auto& type() const { return m_type; }
         auto& expression() const { return m_expression; }
 
-        static ParseResult<Global> parse(Core::Stream::Stream& stream);
+        static ParseResult<Global> parse(AK::Stream& stream);
 
     private:
         GlobalType m_type;
@@ -700,7 +700,7 @@ public:
 
     auto& entries() const { return m_entries; }
 
-    static ParseResult<GlobalSection> parse(Core::Stream::Stream& stream);
+    static ParseResult<GlobalSection> parse(AK::Stream& stream);
 
 private:
     Vector<Global> m_entries;
@@ -722,7 +722,7 @@ public:
         auto& name() const { return m_name; }
         auto& description() const { return m_description; }
 
-        static ParseResult<Export> parse(Core::Stream::Stream& stream);
+        static ParseResult<Export> parse(AK::Stream& stream);
 
     private:
         DeprecatedString m_name;
@@ -738,7 +738,7 @@ public:
 
     auto& entries() const { return m_entries; }
 
-    static ParseResult<ExportSection> parse(Core::Stream::Stream& stream);
+    static ParseResult<ExportSection> parse(AK::Stream& stream);
 
 private:
     Vector<Export> m_entries;
@@ -755,7 +755,7 @@ public:
 
         auto& index() const { return m_index; }
 
-        static ParseResult<StartFunction> parse(Core::Stream::Stream& stream);
+        static ParseResult<StartFunction> parse(AK::Stream& stream);
 
     private:
         FunctionIndex m_index;
@@ -770,7 +770,7 @@ public:
 
     auto& function() const { return m_function; }
 
-    static ParseResult<StartSection> parse(Core::Stream::Stream& stream);
+    static ParseResult<StartSection> parse(AK::Stream& stream);
 
 private:
     StartFunction m_function;
@@ -789,43 +789,43 @@ public:
 
     struct SegmentType0 {
         // FIXME: Implement me!
-        static ParseResult<SegmentType0> parse(Core::Stream::Stream& stream);
+        static ParseResult<SegmentType0> parse(AK::Stream& stream);
 
         Vector<FunctionIndex> function_indices;
         Active mode;
     };
     struct SegmentType1 {
-        static ParseResult<SegmentType1> parse(Core::Stream::Stream& stream);
+        static ParseResult<SegmentType1> parse(AK::Stream& stream);
 
         Vector<FunctionIndex> function_indices;
     };
     struct SegmentType2 {
         // FIXME: Implement me!
-        static ParseResult<SegmentType2> parse(Core::Stream::Stream& stream);
+        static ParseResult<SegmentType2> parse(AK::Stream& stream);
     };
     struct SegmentType3 {
         // FIXME: Implement me!
-        static ParseResult<SegmentType3> parse(Core::Stream::Stream& stream);
+        static ParseResult<SegmentType3> parse(AK::Stream& stream);
     };
     struct SegmentType4 {
         // FIXME: Implement me!
-        static ParseResult<SegmentType4> parse(Core::Stream::Stream& stream);
+        static ParseResult<SegmentType4> parse(AK::Stream& stream);
     };
     struct SegmentType5 {
         // FIXME: Implement me!
-        static ParseResult<SegmentType5> parse(Core::Stream::Stream& stream);
+        static ParseResult<SegmentType5> parse(AK::Stream& stream);
     };
     struct SegmentType6 {
         // FIXME: Implement me!
-        static ParseResult<SegmentType6> parse(Core::Stream::Stream& stream);
+        static ParseResult<SegmentType6> parse(AK::Stream& stream);
     };
     struct SegmentType7 {
         // FIXME: Implement me!
-        static ParseResult<SegmentType7> parse(Core::Stream::Stream& stream);
+        static ParseResult<SegmentType7> parse(AK::Stream& stream);
     };
 
     struct Element {
-        static ParseResult<Element> parse(Core::Stream::Stream&);
+        static ParseResult<Element> parse(AK::Stream&);
 
         ValueType type;
         Vector<Expression> init;
@@ -841,7 +841,7 @@ public:
 
     auto& segments() const { return m_segments; }
 
-    static ParseResult<ElementSection> parse(Core::Stream::Stream& stream);
+    static ParseResult<ElementSection> parse(AK::Stream& stream);
 
 private:
     Vector<Element> m_segments;
@@ -859,7 +859,7 @@ public:
     auto n() const { return m_n; }
     auto& type() const { return m_type; }
 
-    static ParseResult<Locals> parse(Core::Stream::Stream& stream);
+    static ParseResult<Locals> parse(AK::Stream& stream);
 
 private:
     u32 m_n { 0 };
@@ -880,7 +880,7 @@ public:
         auto& locals() const { return m_locals; }
         auto& body() const { return m_body; }
 
-        static ParseResult<Func> parse(Core::Stream::Stream& stream);
+        static ParseResult<Func> parse(AK::Stream& stream);
 
     private:
         Vector<Locals> m_locals;
@@ -897,7 +897,7 @@ public:
         auto size() const { return m_size; }
         auto& func() const { return m_func; }
 
-        static ParseResult<Code> parse(Core::Stream::Stream& stream);
+        static ParseResult<Code> parse(AK::Stream& stream);
 
     private:
         u32 m_size { 0 };
@@ -913,7 +913,7 @@ public:
 
     auto& functions() const { return m_functions; }
 
-    static ParseResult<CodeSection> parse(Core::Stream::Stream& stream);
+    static ParseResult<CodeSection> parse(AK::Stream& stream);
 
 private:
     Vector<Code> m_functions;
@@ -940,7 +940,7 @@ public:
 
         auto& value() const { return m_value; }
 
-        static ParseResult<Data> parse(Core::Stream::Stream& stream);
+        static ParseResult<Data> parse(AK::Stream& stream);
 
     private:
         Value m_value;
@@ -955,7 +955,7 @@ public:
 
     auto& data() const { return m_data; }
 
-    static ParseResult<DataSection> parse(Core::Stream::Stream& stream);
+    static ParseResult<DataSection> parse(AK::Stream& stream);
 
 private:
     Vector<Data> m_data;
@@ -972,7 +972,7 @@ public:
 
     auto& count() const { return m_count; }
 
-    static ParseResult<DataCountSection> parse(Core::Stream::Stream& stream);
+    static ParseResult<DataCountSection> parse(AK::Stream& stream);
 
 private:
     Optional<u32> m_count;
@@ -1067,7 +1067,7 @@ public:
     StringView validation_error() const { return *m_validation_error; }
     void set_validation_error(DeprecatedString error) { m_validation_error = move(error); }
 
-    static ParseResult<Module> parse(Core::Stream::Stream& stream);
+    static ParseResult<Module> parse(AK::Stream& stream);
 
 private:
     bool populate_sections();

Userland/Libraries/LibWeb/Loader/ResourceLoader.h

@@ -61,7 +61,7 @@ public:
     virtual void set_should_buffer_all_input(bool) = 0;
     virtual bool stop() = 0;
 
-    virtual void stream_into(Core::Stream::Stream&) = 0;
+    virtual void stream_into(AK::Stream&) = 0;
 
     Function<void(bool success, u32 total_size, HashMap<DeprecatedString, DeprecatedString, CaseInsensitiveStringTraits> const& response_headers, Optional<u32> response_code, ReadonlyBytes payload)> on_buffered_request_finish;
     Function<void(bool success, u32 total_size)> on_finish;

Userland/Libraries/LibWebView/RequestServerAdapter.cpp

@@ -64,7 +64,7 @@ bool RequestServerRequestAdapter::stop()
     return m_request->stop();
 }
 
-void RequestServerRequestAdapter::stream_into(Core::Stream::Stream& stream)
+void RequestServerRequestAdapter::stream_into(AK::Stream& stream)
 {
     m_request->stream_into(stream);
 }

Userland/Libraries/LibWebView/RequestServerAdapter.h

@@ -27,7 +27,7 @@ public:
     virtual void set_should_buffer_all_input(bool) override;
     virtual bool stop() override;
 
-    virtual void stream_into(Core::Stream::Stream&) override;
+    virtual void stream_into(AK::Stream&) override;
 
 private:
     RequestServerRequestAdapter(NonnullRefPtr<Protocol::Request>);

Userland/Services/WebServer/Client.cpp

@@ -175,7 +175,7 @@ ErrorOr<bool> Client::handle_request(ReadonlyBytes raw_request)
     return true;
 }
 
-ErrorOr<void> Client::send_response(Core::Stream::Stream& response, HTTP::HttpRequest const& request, ContentInfo content_info)
+ErrorOr<void> Client::send_response(AK::Stream& response, HTTP::HttpRequest const& request, ContentInfo content_info)
 {
     StringBuilder builder;
     builder.append("HTTP/1.0 200 OK\r\n"sv);

Userland/Services/WebServer/Client.h

@@ -30,7 +30,7 @@ private:
     };
 
     ErrorOr<bool> handle_request(ReadonlyBytes);
-    ErrorOr<void> send_response(Core::Stream::Stream&, HTTP::HttpRequest const&, ContentInfo);
+    ErrorOr<void> send_response(AK::Stream&, HTTP::HttpRequest const&, ContentInfo);
     ErrorOr<void> send_redirect(StringView redirect, HTTP::HttpRequest const&);
     ErrorOr<void> send_error_response(unsigned code, HTTP::HttpRequest const&, Vector<String> const& headers = {});
     void die();

Userland/Utilities/gml-format.cpp

@@ -26,7 +26,7 @@ static ErrorOr<bool> format_file(StringView path, bool inplace)
     if (inplace && !read_from_stdin) {
         if (formatted_gml == contents)
             return true;
-        TRY(file->seek(0, Core::Stream::SeekMode::SetPosition));
+        TRY(file->seek(0, SeekMode::SetPosition));
         TRY(file->truncate(0));
         TRY(file->write(formatted_gml.bytes()));
     } else {

Userland/Utilities/gunzip.cpp

@@ -10,7 +10,7 @@
 #include <LibMain/Main.h>
 #include <unistd.h>
 
-static ErrorOr<void> decompress_file(NonnullOwnPtr<Core::Stream::File> input_stream, Core::Stream::Stream& output_stream)
+static ErrorOr<void> decompress_file(NonnullOwnPtr<Core::Stream::File> input_stream, AK::Stream& output_stream)
 {
     auto gzip_stream = Compress::GzipDecompressor { move(input_stream) };
 

Userland/Utilities/headless-browser.cpp

@@ -336,7 +336,7 @@ public:
             return false;
         }
 
-        virtual void stream_into(Core::Stream::Stream&) override
+        virtual void stream_into(AK::Stream&) override
         {
         }
 
@@ -415,7 +415,7 @@ public:
             return false;
         }
 
-        virtual void stream_into(Core::Stream::Stream&) override
+        virtual void stream_into(AK::Stream&) override
         {
         }
 
@@ -484,7 +484,7 @@ public:
             return false;
         }
 
-        virtual void stream_into(Core::Stream::Stream&) override
+        virtual void stream_into(AK::Stream&) override
         {
         }
 

Userland/Utilities/hexdump.cpp

@@ -39,7 +39,7 @@ ErrorOr<int> serenity_main(Main::Arguments args)
 
     auto file = TRY(Core::Stream::File::open_file_or_standard_stream(path, Core::Stream::OpenMode::Read));
     if (seek_to.has_value())
-        TRY(file->seek(seek_to.value(), Core::Stream::SeekMode::SetPosition));
+        TRY(file->seek(seek_to.value(), SeekMode::SetPosition));
 
     auto print_line = [](Bytes line) {
         VERIFY(line.size() <= LINE_LENGTH_BYTES);

Userland/Utilities/js.cpp

@@ -84,7 +84,7 @@ static DeprecatedString s_history_path = DeprecatedString::formatted("{}/.js-his
 static int s_repl_line_level = 0;
 static bool s_fail_repl = false;
 
-static ErrorOr<void> print(JS::Value value, Core::Stream::Stream& stream)
+static ErrorOr<void> print(JS::Value value, AK::Stream& stream)
 {
     JS::PrintContext print_context { .vm = *g_vm, .stream = stream, .strip_ansi = s_strip_ansi };
     return JS::print(value, print_context);

Userland/Utilities/pro.cpp

@@ -104,9 +104,9 @@ private:
 
 /// Wraps a stream to silently ignore writes when the condition isn't true.
 template<typename ConditionT>
-class ConditionalOutputStream final : public Core::Stream::Stream {
+class ConditionalOutputStream final : public AK::Stream {
 public:
-    ConditionalOutputStream(ConditionT&& condition, MaybeOwned<Core::Stream::Stream> stream)
+    ConditionalOutputStream(ConditionT&& condition, MaybeOwned<AK::Stream> stream)
         : m_stream(move(stream))
         , m_condition(condition)
     {
@@ -141,7 +141,7 @@ public:
     }
 
 private:
-    MaybeOwned<Core::Stream::Stream> m_stream;
+    MaybeOwned<AK::Stream> m_stream;
     ConditionT m_condition;
 };
 

Userland/Utilities/tail.cpp

@@ -14,7 +14,7 @@
 
 static ErrorOr<void> tail_from_pos(Core::Stream::File& file, off_t startline)
 {
-    TRY(file.seek(startline + 1, Core::Stream::SeekMode::SetPosition));
+    TRY(file.seek(startline + 1, SeekMode::SetPosition));
     auto buffer = TRY(file.read_until_eof());
     out("{}", StringView { buffer });
     return {};
@@ -24,13 +24,13 @@ static ErrorOr<off_t> find_seek_pos(Core::Stream::File& file, int wanted_lines)
 {
     // Rather than reading the whole file, start at the end and work backwards,
     // stopping when we've found the number of lines we want.
-    off_t pos = TRY(file.seek(0, Core::Stream::SeekMode::FromEndPosition));
+    off_t pos = TRY(file.seek(0, SeekMode::FromEndPosition));
 
     off_t end = pos;
     int lines = 0;
 
     for (; pos >= 0; pos--) {
-        TRY(file.seek(pos, Core::Stream::SeekMode::SetPosition));
+        TRY(file.seek(pos, SeekMode::SetPosition));
 
         if (file.is_eof())
             break;
@@ -102,7 +102,7 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
     TRY(tail_from_pos(*f, pos));
 
     if (follow) {
-        TRY(f->seek(0, Core::Stream::SeekMode::FromEndPosition));
+        TRY(f->seek(0, SeekMode::FromEndPosition));
 
         Core::EventLoop event_loop;
         auto watcher = TRY(Core::FileWatcher::create());
@@ -118,7 +118,7 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
                 auto bytes = buffer_or_error.value().bytes();
                 out("{}", StringView { bytes });
 
-                auto potential_error = f->seek(0, Core::Stream::SeekMode::FromEndPosition);
+                auto potential_error = f->seek(0, SeekMode::FromEndPosition);
                 if (potential_error.is_error()) {
                     auto error = potential_error.error();
                     warnln(error.string_literal());

Userland/Utilities/tar.cpp

@@ -64,7 +64,7 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
         if (!directory.is_empty())
             TRY(Core::System::chdir(directory));
 
-        NonnullOwnPtr<Core::Stream::Stream> input_stream = TRY(Core::Stream::File::open_file_or_standard_stream(archive_file, Core::Stream::OpenMode::Read));
+        NonnullOwnPtr<AK::Stream> input_stream = TRY(Core::Stream::File::open_file_or_standard_stream(archive_file, Core::Stream::OpenMode::Read));
 
         if (gzip)
             input_stream = make<Compress::GzipDecompressor>(move(input_stream));
@@ -206,7 +206,7 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
             return 1;
         }
 
-        NonnullOwnPtr<Core::Stream::Stream> output_stream = TRY(Core::Stream::File::standard_output());
+        NonnullOwnPtr<AK::Stream> output_stream = TRY(Core::Stream::File::standard_output());
 
         if (!archive_file.is_empty())
             output_stream = TRY(Core::Stream::File::open(archive_file, Core::Stream::OpenMode::Write));

Userland/Utilities/utmpupdate.cpp

@@ -70,7 +70,7 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
         json.remove(tty_name);
     }
 
-    TRY(file->seek(0, Core::Stream::SeekMode::SetPosition));
+    TRY(file->seek(0, SeekMode::SetPosition));
     TRY(file->truncate(0));
     TRY(file->write(json.to_deprecated_string().bytes()));
 

Userland/Utilities/wasm.cpp

@@ -19,7 +19,7 @@
 #include <unistd.h>
 
 RefPtr<Line::Editor> g_line_editor;
-static OwnPtr<Core::Stream::Stream> g_stdout {};
+static OwnPtr<AK::Stream> g_stdout {};
 static OwnPtr<Wasm::Printer> g_printer {};
 static bool g_continue { false };
 static void (*old_signal)(int);