chore: remove static containers

Author: ashtum

include/boost/http_proto.hpp

@@ -24,16 +24,12 @@
 #include <boost/http_proto/method.hpp>
 #include <boost/http_proto/parser.hpp>
 #include <boost/http_proto/request.hpp>
-#include <boost/http_proto/request_base.hpp>
 #include <boost/http_proto/request_parser.hpp>
 #include <boost/http_proto/response.hpp>
-#include <boost/http_proto/response_base.hpp>
 #include <boost/http_proto/response_parser.hpp>
 #include <boost/http_proto/serializer.hpp>
 #include <boost/http_proto/sink.hpp>
 #include <boost/http_proto/source.hpp>
-#include <boost/http_proto/static_request.hpp>
-#include <boost/http_proto/static_response.hpp>
 #include <boost/http_proto/status.hpp>
 #include <boost/http_proto/string_body.hpp>
 #include <boost/http_proto/version.hpp>

include/boost/http_proto/fields_base.hpp

@@ -37,7 +37,7 @@ class fields_base
     detail::header h_;
     std::size_t max_cap_ =
         std::numeric_limits<std::size_t>::max();
-    bool external_storage_ = false;
+    bool view_ = false;
 
     using entry =
         detail::header::entry;
@@ -46,6 +46,9 @@ class fields_base
     using table =
         detail::header::table;
 
+    struct view_tag_t {};
+    static constexpr view_tag_t view_tag{};
+
     class op_t;
     class prefix_op_t
     {
@@ -67,24 +70,18 @@ class fields_base
     friend class message_base;
     friend class request_base;
     friend class request;
-    friend class static_request;
     friend class response_base;
     friend class response;
-    friend class static_response;
     friend class parser;
+    friend class request_parser;
+    friend class response_parser;
     friend class serializer;
 
     BOOST_HTTP_PROTO_DECL
     explicit
     fields_base(
         detail::kind k) noexcept;
 
-    BOOST_HTTP_PROTO_DECL
-    fields_base(
-        detail::kind k,
-        void* storage,
-        std::size_t cap) noexcept;
-
     BOOST_HTTP_PROTO_DECL
     fields_base(
         detail::kind k,
@@ -101,9 +98,8 @@ class fields_base
 
     BOOST_HTTP_PROTO_DECL
     fields_base(
-        detail::header const& h,
-        void* storage,
-        std::size_t cap);
+        view_tag_t,
+        detail::header const& h);
 
 public:
     //--------------------------------------------
@@ -1349,6 +1345,9 @@ class fields_base
     copy_impl(
         detail::header const&);
 
+    void
+    clone_if_needed();
+
     BOOST_HTTP_PROTO_DECL
     void
     insert_impl(

include/boost/http_proto/message_base.hpp

@@ -28,8 +28,6 @@ namespace http_proto {
     @see
         @ref response,
         @ref request,
-        @ref static_response,
-        @ref static_request,
         @ref metadata.
 */
 class message_base

include/boost/http_proto/parser.hpp

@@ -32,8 +32,6 @@ namespace http_proto {
 // Forward declaration
 class request_parser;
 class response_parser;
-class static_request;
-class static_response;
 
 /** A parser for HTTP/1 messages.
 
@@ -624,11 +622,8 @@ class parser
     void
     start_impl(bool);
 
-    static_request const&
-    safe_get_request() const;
-
-    static_response const&
-    safe_get_response() const;
+    detail::header const&
+    safe_get_header() const;
 
     BOOST_HTTP_PROTO_DECL
     detail::workspace&