Reorganize source files

include/beast/websocket/impl/write_op.ipp

@@ -0,0 +1,137 @@
+//
+// Copyright (c) 2013-2016 Vinnie Falco (vinnie dot falco at gmail 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 BEAST_WEBSOCKET_IMPL_WRITE_OP_HPP
+#define BEAST_WEBSOCKET_IMPL_WRITE_OP_HPP
+
+#include <beast/consuming_buffers.hpp>
+#include <beast/prepare_buffers.hpp>
+#include <beast/handler_alloc.hpp>
+#include <beast/websocket/detail/frame.hpp>
+#include <algorithm>
+#include <cassert>
+#include <memory>
+
+namespace beast {
+namespace websocket {
+
+// write a message
+//
+template<class NextLayer>
+template<class Buffers, class Handler>
+class stream<NextLayer>::write_op
+{
+    using alloc_type =
+        handler_alloc<char, Handler>;
+
+    struct data : op
+    {
+        stream<NextLayer>& ws;
+        consuming_buffers<Buffers> cb;
+        Handler h;
+        std::size_t remain;
+        bool cont;
+        int state = 0;
+
+        template<class DeducedHandler>
+        data(DeducedHandler&& h_,
+            stream<NextLayer>& ws_, Buffers const& bs)
+            : ws(ws_)
+            , cb(bs)
+            , h(std::forward<DeducedHandler>(h_))
+            , remain(boost::asio::buffer_size(cb))
+            , cont(boost_asio_handler_cont_helpers::
+                is_continuation(h))
+        {
+        }
+    };
+
+    std::shared_ptr<data> d_;
+
+public:
+    write_op(write_op&&) = default;
+    write_op(write_op const&) = default;
+
+    template<class DeducedHandler, class... Args>
+    explicit
+    write_op(DeducedHandler&& h,
+            stream<NextLayer>& ws, Args&&... args)
+        : d_(std::allocate_shared<data>(alloc_type{h},
+            std::forward<DeducedHandler>(h), ws,
+                std::forward<Args>(args)...))
+    {
+        (*this)(error_code{}, false);
+    }
+
+    void operator()(error_code ec, bool again = true);
+
+    friend
+    auto asio_handler_allocate(
+        std::size_t size, write_op* op)
+    {
+        return boost_asio_handler_alloc_helpers::
+            allocate(size, op->d_->h);
+    }
+
+    friend
+    auto asio_handler_deallocate(
+        void* p, std::size_t size, write_op* op)
+    {
+        return boost_asio_handler_alloc_helpers::
+            deallocate(p, size, op->d_->h);
+    }
+
+    friend
+    auto asio_handler_is_continuation(write_op* op)
+    {
+        return op->d_->cont;
+    }
+
+    template <class Function>
+    friend
+    auto asio_handler_invoke(Function&& f, write_op* op)
+    {
+        return boost_asio_handler_invoke_helpers::
+            invoke(f, op->d_->h);
+    }
+};
+
+template<class NextLayer>
+template<class Buffers, class Handler>
+void
+stream<NextLayer>::
+write_op<Buffers, Handler>::
+operator()(error_code ec, bool again)
+{
+    auto& d = *d_;
+    d.cont = d.cont || again;
+    while(! ec && d.state != 99)
+    {
+        switch(d.state)
+        {
+        case 0:
+        {
+            auto const n = std::min(
+                d.remain, d.ws.wr_frag_size_);
+            d.remain -= n;
+            auto const fin = d.remain <= 0;
+            if(fin)
+                d.state = 99;
+            d.ws.async_write_frame(fin,
+                prepare_buffers(n, d.cb), std::move(*this));
+            d.cb.consume(n);
+            return;
+        }
+        }
+    }
+    d.h(ec);
+}
+
+} // websocket
+} // beast
+
+#endif