comparison DEPENDENCIES/generic/include/boost/asio/impl/buffered_read_stream.hpp @ 16:2665513ce2d3

Add boost headers

+//
+// impl/buffered_read_stream.hpp
+// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+//
+// Copyright (c) 2003-2013 Christopher M. Kohlhoff (chris at kohlhoff dot com)
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+
+#ifndef BOOST_ASIO_IMPL_BUFFERED_READ_STREAM_HPP
+#define BOOST_ASIO_IMPL_BUFFERED_READ_STREAM_HPP
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1200)
+# pragma once
+#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
+
+#include <boost/asio/detail/handler_alloc_helpers.hpp>
+#include <boost/asio/detail/handler_cont_helpers.hpp>
+#include <boost/asio/detail/handler_invoke_helpers.hpp>
+#include <boost/asio/detail/handler_type_requirements.hpp>
+
+#include <boost/asio/detail/push_options.hpp>
+
+namespace boost {
+namespace asio {
+
+template <typename Stream>
+std::size_t buffered_read_stream<Stream>::fill()
+{
+  detail::buffer_resize_guard<detail::buffered_stream_storage>
+    resize_guard(storage_);
+  std::size_t previous_size = storage_.size();
+  storage_.resize(storage_.capacity());
+  storage_.resize(previous_size + next_layer_.read_some(buffer(
+          storage_.data() + previous_size,
+          storage_.size() - previous_size)));
+  resize_guard.commit();
+  return storage_.size() - previous_size;
+}
+
+template <typename Stream>
+std::size_t buffered_read_stream<Stream>::fill(boost::system::error_code& ec)
+{
+  detail::buffer_resize_guard<detail::buffered_stream_storage>
+    resize_guard(storage_);
+  std::size_t previous_size = storage_.size();
+  storage_.resize(storage_.capacity());
+  storage_.resize(previous_size + next_layer_.read_some(buffer(
+          storage_.data() + previous_size,
+          storage_.size() - previous_size),
+        ec));
+  resize_guard.commit();
+  return storage_.size() - previous_size;
+}
+
+namespace detail
+{
+  template <typename ReadHandler>
+  class buffered_fill_handler
+  {
+  public:
+    buffered_fill_handler(detail::buffered_stream_storage& storage,
+        std::size_t previous_size, ReadHandler& handler)
+      : storage_(storage),
+        previous_size_(previous_size),
+        handler_(BOOST_ASIO_MOVE_CAST(ReadHandler)(handler))
+    {
+    }
+
+#if defined(BOOST_ASIO_HAS_MOVE)
+    buffered_fill_handler(const buffered_fill_handler& other)
+      : storage_(other.storage_),
+        previous_size_(other.previous_size_),
+        handler_(other.handler_)
+    {
+    }
+
+    buffered_fill_handler(buffered_fill_handler&& other)
+      : storage_(other.storage_),
+        previous_size_(other.previous_size_),
+        handler_(BOOST_ASIO_MOVE_CAST(ReadHandler)(other.handler_))
+    {
+    }
+#endif // defined(BOOST_ASIO_HAS_MOVE)
+
+    void operator()(const boost::system::error_code& ec,
+        const std::size_t bytes_transferred)
+    {
+      storage_.resize(previous_size_ + bytes_transferred);
+      handler_(ec, bytes_transferred);
+    }
+
+  //private:
+    detail::buffered_stream_storage& storage_;
+    std::size_t previous_size_;
+    ReadHandler handler_;
+  };
+
+  template <typename ReadHandler>
+  inline void* asio_handler_allocate(std::size_t size,
+      buffered_fill_handler<ReadHandler>* this_handler)
+  {
+    return boost_asio_handler_alloc_helpers::allocate(
+        size, this_handler->handler_);
+  }
+
+  template <typename ReadHandler>
+  inline void asio_handler_deallocate(void* pointer, std::size_t size,
+      buffered_fill_handler<ReadHandler>* this_handler)
+  {
+    boost_asio_handler_alloc_helpers::deallocate(
+        pointer, size, this_handler->handler_);
+  }
+
+  template <typename ReadHandler>
+  inline bool asio_handler_is_continuation(
+      buffered_fill_handler<ReadHandler>* this_handler)
+  {
+    return boost_asio_handler_cont_helpers::is_continuation(
+          this_handler->handler_);
+  }
+
+  template <typename Function, typename ReadHandler>
+  inline void asio_handler_invoke(Function& function,
+      buffered_fill_handler<ReadHandler>* this_handler)
+  {
+    boost_asio_handler_invoke_helpers::invoke(
+        function, this_handler->handler_);
+  }
+
+  template <typename Function, typename ReadHandler>
+  inline void asio_handler_invoke(const Function& function,
+      buffered_fill_handler<ReadHandler>* this_handler)
+  {
+    boost_asio_handler_invoke_helpers::invoke(
+        function, this_handler->handler_);
+  }
+} // namespace detail
+
+template <typename Stream>
+template <typename ReadHandler>
+BOOST_ASIO_INITFN_RESULT_TYPE(ReadHandler,
+    void (boost::system::error_code, std::size_t))
+buffered_read_stream<Stream>::async_fill(
+    BOOST_ASIO_MOVE_ARG(ReadHandler) handler)
+{
+  // If you get an error on the following line it means that your handler does
+  // not meet the documented type requirements for a ReadHandler.
+  BOOST_ASIO_READ_HANDLER_CHECK(ReadHandler, handler) type_check;
+
+  detail::async_result_init<
+    ReadHandler, void (boost::system::error_code, std::size_t)> init(
+      BOOST_ASIO_MOVE_CAST(ReadHandler)(handler));
+
+  std::size_t previous_size = storage_.size();
+  storage_.resize(storage_.capacity());
+  next_layer_.async_read_some(
+      buffer(
+        storage_.data() + previous_size,
+        storage_.size() - previous_size),
+      detail::buffered_fill_handler<BOOST_ASIO_HANDLER_TYPE(
+        ReadHandler, void (boost::system::error_code, std::size_t))>(
+        storage_, previous_size, init.handler));
+
+  return init.result.get();
+}
+
+template <typename Stream>
+template <typename MutableBufferSequence>
+std::size_t buffered_read_stream<Stream>::read_some(
+    const MutableBufferSequence& buffers)
+{
+  if (boost::asio::buffer_size(buffers) == 0)
+    return 0;
+
+  if (storage_.empty())
+    this->fill();
+
+  return this->copy(buffers);
+}
+
+template <typename Stream>
+template <typename MutableBufferSequence>
+std::size_t buffered_read_stream<Stream>::read_some(
+    const MutableBufferSequence& buffers, boost::system::error_code& ec)
+{
+  ec = boost::system::error_code();
+
+  if (boost::asio::buffer_size(buffers) == 0)
+    return 0;
+
+  if (storage_.empty() && !this->fill(ec))
+    return 0;
+
+  return this->copy(buffers);
+}
+
+namespace detail
+{
+  template <typename MutableBufferSequence, typename ReadHandler>
+  class buffered_read_some_handler
+  {
+  public:
+    buffered_read_some_handler(detail::buffered_stream_storage& storage,
+        const MutableBufferSequence& buffers, ReadHandler& handler)
+      : storage_(storage),
+        buffers_(buffers),
+        handler_(handler)
+    {
+    }
+
+#if defined(BOOST_ASIO_HAS_MOVE)
+      buffered_read_some_handler(const buffered_read_some_handler& other)
+        : storage_(other.storage_),
+          buffers_(other.buffers_),
+          handler_(other.handler_)
+      {
+      }
+
+      buffered_read_some_handler(buffered_read_some_handler&& other)
+        : storage_(other.storage_),
+          buffers_(other.buffers_),
+          handler_(BOOST_ASIO_MOVE_CAST(ReadHandler)(other.handler_))
+      {
+      }
+#endif // defined(BOOST_ASIO_HAS_MOVE)
+
+    void operator()(const boost::system::error_code& ec, std::size_t)
+    {
+      if (ec || storage_.empty())
+      {
+        const std::size_t length = 0;
+        handler_(ec, length);
+      }
+      else
+      {
+        const std::size_t bytes_copied = boost::asio::buffer_copy(
+            buffers_, storage_.data(), storage_.size());
+        storage_.consume(bytes_copied);
+        handler_(ec, bytes_copied);
+      }
+    }
+
+  //private:
+    detail::buffered_stream_storage& storage_;
+    MutableBufferSequence buffers_;
+    ReadHandler handler_;
+  };
+
+  template <typename MutableBufferSequence, typename ReadHandler>
+  inline void* asio_handler_allocate(std::size_t size,
+      buffered_read_some_handler<
+        MutableBufferSequence, ReadHandler>* this_handler)
+  {
+    return boost_asio_handler_alloc_helpers::allocate(
+        size, this_handler->handler_);
+  }
+
+  template <typename MutableBufferSequence, typename ReadHandler>
+  inline void asio_handler_deallocate(void* pointer, std::size_t size,
+      buffered_read_some_handler<
+        MutableBufferSequence, ReadHandler>* this_handler)
+  {
+    boost_asio_handler_alloc_helpers::deallocate(
+        pointer, size, this_handler->handler_);
+  }
+
+  template <typename MutableBufferSequence, typename ReadHandler>
+  inline bool asio_handler_is_continuation(
+      buffered_read_some_handler<
+        MutableBufferSequence, ReadHandler>* this_handler)
+  {
+    return boost_asio_handler_cont_helpers::is_continuation(
+          this_handler->handler_);
+  }
+
+  template <typename Function, typename MutableBufferSequence,
+      typename ReadHandler>
+  inline void asio_handler_invoke(Function& function,
+      buffered_read_some_handler<
+        MutableBufferSequence, ReadHandler>* this_handler)
+  {
+    boost_asio_handler_invoke_helpers::invoke(
+        function, this_handler->handler_);
+  }
+
+  template <typename Function, typename MutableBufferSequence,
+      typename ReadHandler>
+  inline void asio_handler_invoke(const Function& function,
+      buffered_read_some_handler<
+        MutableBufferSequence, ReadHandler>* this_handler)
+  {
+    boost_asio_handler_invoke_helpers::invoke(
+        function, this_handler->handler_);
+  }
+} // namespace detail
+
+template <typename Stream>
+template <typename MutableBufferSequence, typename ReadHandler>
+BOOST_ASIO_INITFN_RESULT_TYPE(ReadHandler,
+    void (boost::system::error_code, std::size_t))
+buffered_read_stream<Stream>::async_read_some(
+    const MutableBufferSequence& buffers,
+    BOOST_ASIO_MOVE_ARG(ReadHandler) handler)
+{
+  // If you get an error on the following line it means that your handler does
+  // not meet the documented type requirements for a ReadHandler.
+  BOOST_ASIO_READ_HANDLER_CHECK(ReadHandler, handler) type_check;
+
+  detail::async_result_init<
+    ReadHandler, void (boost::system::error_code, std::size_t)> init(
+      BOOST_ASIO_MOVE_CAST(ReadHandler)(handler));
+
+  if (boost::asio::buffer_size(buffers) == 0 || !storage_.empty())
+  {
+    next_layer_.async_read_some(boost::asio::mutable_buffers_1(0, 0),
+        detail::buffered_read_some_handler<
+          MutableBufferSequence, BOOST_ASIO_HANDLER_TYPE(
+            ReadHandler, void (boost::system::error_code, std::size_t))>(
+            storage_, buffers, init.handler));
+  }
+  else
+  {
+    this->async_fill(detail::buffered_read_some_handler<
+          MutableBufferSequence, BOOST_ASIO_HANDLER_TYPE(
+            ReadHandler, void (boost::system::error_code, std::size_t))>(
+            storage_, buffers, init.handler));
+  }
+
+  return init.result.get();
+}
+
+template <typename Stream>
+template <typename MutableBufferSequence>
+std::size_t buffered_read_stream<Stream>::peek(
+    const MutableBufferSequence& buffers)
+{
+  if (storage_.empty())
+    this->fill();
+  return this->peek_copy(buffers);
+}
+
+template <typename Stream>
+template <typename MutableBufferSequence>
+std::size_t buffered_read_stream<Stream>::peek(
+    const MutableBufferSequence& buffers, boost::system::error_code& ec)
+{
+  ec = boost::system::error_code();
+  if (storage_.empty() && !this->fill(ec))
+    return 0;
+  return this->peek_copy(buffers);
+}
+
+} // namespace asio
+} // namespace boost
+
+#include <boost/asio/detail/pop_options.hpp>
+
+#endif // BOOST_ASIO_IMPL_BUFFERED_READ_STREAM_HPP