AK: Deprecate the old AK::Stream

This also removes a few cases where the respective header wasn't
actually required to be included.

AK/Stream.h

@@ -1,167 +0,0 @@
-/*
- * Copyright (c) 2020, the SerenityOS developers.
- *
- * SPDX-License-Identifier: BSD-2-Clause
- */
-
-#pragma once
-
-#include <AK/Concepts.h>
-#include <AK/Endian.h>
-#include <AK/Forward.h>
-#include <AK/Optional.h>
-#include <AK/Span.h>
-#include <AK/StdLibExtras.h>
-
-namespace AK::Detail {
-
-class Stream {
-public:
-    virtual ~Stream() { VERIFY(!has_any_error()); }
-
-    virtual bool has_recoverable_error() const { return m_recoverable_error; }
-    virtual bool has_fatal_error() const { return m_fatal_error; }
-    virtual bool has_any_error() const { return has_recoverable_error() || has_fatal_error(); }
-
-    virtual bool handle_recoverable_error()
-    {
-        VERIFY(!has_fatal_error());
-        return exchange(m_recoverable_error, false);
-    }
-    virtual bool handle_fatal_error() { return exchange(m_fatal_error, false); }
-    virtual bool handle_any_error()
-    {
-        if (has_any_error()) {
-            m_recoverable_error = false;
-            m_fatal_error = false;
-
-            return true;
-        }
-
-        return false;
-    }
-
-    ErrorOr<void> try_handle_any_error()
-    {
-        if (!handle_any_error())
-            return {};
-        return Error::from_string_literal("Stream error");
-    }
-
-    virtual void set_recoverable_error() const { m_recoverable_error = true; }
-    virtual void set_fatal_error() const { m_fatal_error = true; }
-
-private:
-    mutable bool m_recoverable_error { false };
-    mutable bool m_fatal_error { false };
-};
-
-}
-
-namespace AK {
-
-class InputStream : public virtual Detail::Stream {
-public:
-    // Reads at least one byte unless none are requested or none are available. Does nothing
-    // and returns zero if there is already an error.
-    virtual size_t read(Bytes) = 0;
-
-    // If this function returns true, then no more data can be read. If read(Bytes) previously
-    // returned zero even though bytes were requested, then the inverse is true as well.
-    virtual bool unreliable_eof() const = 0;
-
-    // Some streams additionally define a method with the signature:
-    //
-    //     bool eof() const;
-    //
-    // This method has the same semantics as unreliable_eof() but returns true if and only if no
-    // more data can be read. (A failed read is not necessary.)
-
-    virtual bool read_or_error(Bytes) = 0;
-    virtual bool discard_or_error(size_t count) = 0;
-};
-
-class OutputStream : public virtual Detail::Stream {
-public:
-    virtual size_t write(ReadonlyBytes) = 0;
-    virtual bool write_or_error(ReadonlyBytes) = 0;
-};
-
-class DuplexStream
-    : public InputStream
-    , public OutputStream {
-};
-
-inline InputStream& operator>>(InputStream& stream, Bytes bytes)
-{
-    stream.read_or_error(bytes);
-    return stream;
-}
-inline OutputStream& operator<<(OutputStream& stream, ReadonlyBytes bytes)
-{
-    stream.write_or_error(bytes);
-    return stream;
-}
-
-template<typename T>
-InputStream& operator>>(InputStream& stream, LittleEndian<T>& value)
-{
-    return stream >> Bytes { &value.m_value, sizeof(value.m_value) };
-}
-template<typename T>
-OutputStream& operator<<(OutputStream& stream, LittleEndian<T> value)
-{
-    return stream << ReadonlyBytes { &value.m_value, sizeof(value.m_value) };
-}
-
-template<typename T>
-InputStream& operator>>(InputStream& stream, BigEndian<T>& value)
-{
-    return stream >> Bytes { &value.m_value, sizeof(value.m_value) };
-}
-template<typename T>
-OutputStream& operator<<(OutputStream& stream, BigEndian<T> value)
-{
-    return stream << ReadonlyBytes { &value.m_value, sizeof(value.m_value) };
-}
-
-template<typename T>
-InputStream& operator>>(InputStream& stream, Optional<T>& value)
-{
-    T temporary;
-    stream >> temporary;
-    value = temporary;
-    return stream;
-}
-
-template<Integral I>
-InputStream& operator>>(InputStream& stream, I& value)
-{
-    stream.read_or_error({ &value, sizeof(value) });
-    return stream;
-}
-template<Integral I>
-OutputStream& operator<<(OutputStream& stream, I value)
-{
-    stream.write_or_error({ &value, sizeof(value) });
-    return stream;
-}
-
-#ifndef KERNEL
-
-template<FloatingPoint F>
-InputStream& operator>>(InputStream& stream, F& value)
-{
-    stream.read_or_error({ &value, sizeof(value) });
-    return stream;
-}
-template<FloatingPoint F>
-OutputStream& operator<<(OutputStream& stream, F value)
-{
-    stream.write_or_error({ &value, sizeof(value) });
-    return stream;
-}
-
-#endif
-
-}