Remove i_properties interface

We use metadata_t directly. No need for generic interface now.

src/i_properties.hpp

-/*
-    Copyright (c) 2007-2014 Contributors as noted in the AUTHORS file
-
-    This file is part of 0MQ.
-
-    0MQ is free software; you can redistribute it and/or modify it under
-    the terms of the GNU Lesser General Public License as published by
-    the Free Software Foundation; either version 3 of the License, or
-    (at your option) any later version.
-
-    0MQ is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU Lesser General Public License for more details.
-
-    You should have received a copy of the GNU Lesser General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*/
-
-#ifndef __ZMQ_I_PROPERTIES_HPP_INCLUDED__
-#define __ZMQ_I_PROPERTIES_HPP_INCLUDED__
-
-#include <string>
-
-namespace zmq
-{
-    //  Interface for accessing message properties.
-    //  Implementers are supposed to use reference counting to
-    //  manage object's lifetime.
-
-    struct i_properties
-    {
-        virtual ~i_properties () {}
-
-        //  Returns pointer to property value or NULL if
-        //  property not found.
-        virtual const char *get (const std::string &property) const = 0;
-
-        virtual void add_ref () = 0;
-
-        //  Drop reference. Returns true iff the reference
-        //  counter drops to zero.
-        virtual bool drop_ref () = 0;
-    };
-}
-
-#endif

src/metadata.hpp

@@ -21,13 +21,13 @@
 #define __ZMQ_METADATA_HPP_INCLUDED__
 
 #include <map>
+#include <string>
 
 #include "atomic_counter.hpp"
-#include "i_properties.hpp"
 
 namespace zmq
 {
-    class metadata_t : public i_properties
+    class metadata_t
     {
         public:
 

src/msg.cpp

@@ -26,7 +26,7 @@
 
 #include "stdint.hpp"
 #include "likely.hpp"
-#include "i_properties.hpp"
+#include "metadata.hpp"
 #include "err.hpp"
 
 //  Check whether the sizes of public representation of the message (zmq_msg_t)
@@ -42,7 +42,7 @@ bool zmq::msg_t::check ()
 
 int zmq::msg_t::init ()
 {
-    u.vsm.properties = NULL;
+    u.vsm.metadata = NULL;
     u.vsm.type = type_vsm;
     u.vsm.flags = 0;
     u.vsm.size = 0;
@@ -54,13 +54,13 @@ int zmq::msg_t::init_size (size_t size_)
 {
     file_desc = -1;
     if (size_ <= max_vsm_size) {
-        u.vsm.properties = NULL;
+        u.vsm.metadata = NULL;
         u.vsm.type = type_vsm;
         u.vsm.flags = 0;
         u.vsm.size = (unsigned char) size_;
     }
     else {
-        u.lmsg.properties = NULL;
+        u.lmsg.metadata = NULL;
         u.lmsg.type = type_lmsg;
         u.lmsg.flags = 0;
         u.lmsg.content =
@@ -90,14 +90,14 @@ int zmq::msg_t::init_data (void *data_, size_t size_, msg_free_fn *ffn_,
 
     //  Initialize constant message if there's no need to deallocate
     if (ffn_ == NULL) {
-        u.cmsg.properties = NULL;
+        u.cmsg.metadata = NULL;
         u.cmsg.type = type_cmsg;
         u.cmsg.flags = 0;
         u.cmsg.data = data_;
         u.cmsg.size = size_;
     }
     else {
-        u.lmsg.properties = NULL;
+        u.lmsg.metadata = NULL;
         u.lmsg.type = type_lmsg;
         u.lmsg.flags = 0;
         u.lmsg.content = (content_t*) malloc (sizeof (content_t));
@@ -118,7 +118,7 @@ int zmq::msg_t::init_data (void *data_, size_t size_, msg_free_fn *ffn_,
 
 int zmq::msg_t::init_delimiter ()
 {
-    u.delimiter.properties = NULL;
+    u.delimiter.metadata = NULL;
     u.delimiter.type = type_delimiter;
     u.delimiter.flags = 0;
     return 0;
@@ -150,9 +150,9 @@ int zmq::msg_t::close ()
         }
     }
 
-    if (u.base.properties != NULL)
-        if (u.base.properties->drop_ref ())
-            delete u.base.properties;
+    if (u.base.metadata != NULL)
+        if (u.base.metadata->drop_ref ())
+            delete u.base.metadata;
 
     //  Make the message invalid.
     u.base.type = 0;
@@ -205,8 +205,8 @@ int zmq::msg_t::copy (msg_t &src_)
         }
     }
 
-    if (src_.u.base.properties != NULL)
-        src_.u.base.properties->add_ref ();
+    if (src_.u.base.metadata != NULL)
+        src_.u.base.metadata->add_ref ();
 
     *this = src_;
 
@@ -275,17 +275,17 @@ void zmq::msg_t::set_fd (int64_t fd_)
     file_desc = fd_;
 }
 
-zmq::i_properties *zmq::msg_t::properties () const
+zmq::metadata_t *zmq::msg_t::metadata () const
 {
-    return u.base.properties;
+    return u.base.metadata;
 }
 
-void zmq::msg_t::set_properties (zmq::i_properties *properties_)
+void zmq::msg_t::set_metadata (zmq::metadata_t *metadata_)
 {
-    assert (properties_ != NULL);
-    assert (u.base.properties == NULL);
-    properties_->add_ref ();
-    u.base.properties = properties_;
+    assert (metadata_ != NULL);
+    assert (u.base.metadata == NULL);
+    metadata_->add_ref ();
+    u.base.metadata = metadata_;
 }
 
 bool zmq::msg_t::is_identity () const
@@ -317,8 +317,8 @@ void zmq::msg_t::add_refs (int refs_)
 {
     zmq_assert (refs_ >= 0);
 
-    //  Operation not supported for messages with properties.
-    zmq_assert (u.base.properties == NULL);
+    //  Operation not supported for messages with metadata.
+    zmq_assert (u.base.metadata == NULL);
 
     //  No copies required.
     if (!refs_)
@@ -340,8 +340,8 @@ bool zmq::msg_t::rm_refs (int refs_)
 {
     zmq_assert (refs_ >= 0);
 
-    //  Operation not supported for messages with properties.
-    zmq_assert (u.base.properties == NULL);
+    //  Operation not supported for messages with metadata.
+    zmq_assert (u.base.metadata == NULL);
 
     //  No copies required.
     if (!refs_)

src/msg.hpp

@@ -25,7 +25,7 @@
 
 #include "config.hpp"
 #include "atomic_counter.hpp"
-#include "i_properties.hpp"
+#include "metadata.hpp"
 
 //  Signature for free function to deallocate the message content.
 //  Note that it has to be declared as "C" so that it is the same as
@@ -71,8 +71,8 @@ namespace zmq
         void reset_flags (unsigned char flags_);
         int64_t fd ();
         void set_fd (int64_t fd_);
-        i_properties *properties () const;
-        void set_properties (i_properties *properties_);
+        metadata_t *metadata () const;
+        void set_metadata (metadata_t *metadata_);
         bool is_identity () const;
         bool is_credential () const;
         bool is_delimiter () const;
@@ -92,7 +92,7 @@ namespace zmq
         //  Size in bytes of the largest message that is still copied around
         //  rather than being reference-counted.
         enum { msg_t_size = 48 };
-        enum { max_vsm_size = msg_t_size - (8 + sizeof (i_properties *) + 3) };
+        enum { max_vsm_size = msg_t_size - (8 + sizeof (metadata_t *) + 3) };
 
         //  Shared message buffer. Message data are either allocated in one
         //  continuous block along with this structure - thus avoiding one
@@ -134,37 +134,37 @@ namespace zmq
         //  the union.
         union {
             struct {
-                i_properties *properties;
-                unsigned char unused [msg_t_size - (8 + sizeof (i_properties *) + 2)];
+                metadata_t *metadata;
+                unsigned char unused [msg_t_size - (8 + sizeof (metadata_t *) + 2)];
                 unsigned char type;
                 unsigned char flags;
             } base;
             struct {
-                i_properties *properties;
+                metadata_t *metadata;
                 unsigned char data [max_vsm_size];
                 unsigned char size;
                 unsigned char type;
                 unsigned char flags;
             } vsm;
             struct {
-                i_properties *properties;
+                metadata_t *metadata;
                 content_t *content;
-                unsigned char unused [msg_t_size - (8 + sizeof (i_properties *) + sizeof (content_t*) + 2)];
+                unsigned char unused [msg_t_size - (8 + sizeof (metadata_t *) + sizeof (content_t*) + 2)];
                 unsigned char type;
                 unsigned char flags;
             } lmsg;
             struct {
-                i_properties *properties;
+                metadata_t *metadata;
                 void* data;
                 size_t size;
                 unsigned char unused
-                    [msg_t_size - (8 + sizeof (i_properties *) + sizeof (void*) + sizeof (size_t) + 2)];
+                    [msg_t_size - (8 + sizeof (metadata_t *) + sizeof (void*) + sizeof (size_t) + 2)];
                 unsigned char type;
                 unsigned char flags;
             } cmsg;
             struct {
-                i_properties *properties;
-                unsigned char unused [msg_t_size - (8 + sizeof (i_properties *) + 2)];
+                metadata_t *metadata;
+                unsigned char unused [msg_t_size - (8 + sizeof (metadata_t *) + 2)];
                 unsigned char type;
                 unsigned char flags;
             } delimiter;

src/stream_engine.cpp

@@ -814,7 +814,7 @@ int zmq::stream_engine_t::decode_and_push (msg_t *msg_)
     if (mechanism->decode (msg_) == -1)
         return -1;
     if (metadata)
-        msg_->set_properties (metadata);
+        msg_->set_metadata (metadata);
     if (session->push_msg (msg_) == -1) {
         if (errno == EAGAIN)
             write_msg = &stream_engine_t::push_one_then_decode_and_push;

src/zmq.cpp

@@ -63,7 +63,7 @@ struct iovec {
 #include "err.hpp"
 #include "msg.hpp"
 #include "fd.hpp"
-#include "i_properties.hpp"
+#include "metadata.hpp"
 
 #if !defined ZMQ_HAVE_WINDOWS
 #include <unistd.h>
@@ -647,9 +647,9 @@ int zmq_msg_set (zmq_msg_t *, int, int)
 
 const char *zmq_msg_gets (zmq_msg_t *msg_, const char *property_)
 {
-    zmq::i_properties *properties = ((zmq::msg_t*) msg_)->properties ();
-    if (properties)
-        return properties->get (std::string (property_));
+    zmq::metadata_t *metadata = ((zmq::msg_t*) msg_)->metadata ();
+    if (metadata)
+        return metadata->get (std::string (property_));
     else
         return NULL;
 }