Add handler helpers

include/beast/http/impl/parse.ipp

@@ -10,7 +10,7 @@
 
 #include <beast/http/concepts.hpp>
 #include <beast/core/bind_handler.hpp>
-#include <beast/core/handler_alloc.hpp>
+#include <beast/core/handler_helpers.hpp>
 #include <beast/core/handler_ptr.hpp>
 #include <beast/core/stream_concepts.hpp>
 #include <boost/assert.hpp>
@@ -35,7 +35,7 @@ class parse_op
 
         data(Handler& handler, Stream& s_,
                 DynamicBuffer& sb_, Parser& p_)
-            : cont(boost_asio_handler_cont_helpers::
+            : cont(beast_asio_helpers::
                 is_continuation(handler))
             , s(s_)
             , db(sb_)
@@ -68,7 +68,7 @@ public:
     void* asio_handler_allocate(
         std::size_t size, parse_op* op)
     {
-        return boost_asio_handler_alloc_helpers::
+        return beast_asio_helpers::
             allocate(size, op->d_.handler());
     }
 
@@ -76,7 +76,7 @@ public:
     void asio_handler_deallocate(
         void* p, std::size_t size, parse_op* op)
     {
-        return boost_asio_handler_alloc_helpers::
+        return beast_asio_helpers::
             deallocate(p, size, op->d_.handler());
     }
 
@@ -90,7 +90,7 @@ public:
     friend
     void asio_handler_invoke(Function&& f, parse_op* op)
     {
-        return boost_asio_handler_invoke_helpers::
+        return beast_asio_helpers::
             invoke(f, op->d_.handler());
     }
 };