Packets: Fix VariantParser invalid parser access bug

[senf.git] / Utils / Logger / Config.ih

diff --git a/Utils/Logger/Config.ih b/Utils/Logger/Config.ih
index 10b9e4a..a850fde 100644 (file)
--- a/Utils/Logger/Config.ih
+++ b/Utils/Logger/Config.ih
@@ -1,8 +1,8 @@
 // $Id$
 //
-// Copyright (C) 2007 
-// Fraunhofer Institut fuer offene Kommunikationssysteme (FOKUS)
-// Kompetenzzentrum fuer Satelitenkommunikation (SatCom)
+// Copyright (C) 2007
+// Fraunhofer Institute for Open Communication Systems (FOKUS)
+// Competence Center NETwork research (NET), St. Augustin, GERMANY
 //     Stefan Bund <g0dil@berlios.de>
 //
 // This program is free software; you can redistribute it and/or modify
@@ -23,8 +23,8 @@
 /** \file
     \brief Config internal header */
 
-#ifndef IH_Config_
-#define IH_Config_ 1
+#ifndef IH_SENF_Utils_Logger_Config_
+#define IH_SENF_Utils_Logger_Config_ 1
 
 // Custom includes
 #include <boost/preprocessor/expand.hpp>
@@ -33,6 +33,7 @@
 #include <boost/preprocessor/seq/fold_right.hpp>
 #include <boost/preprocessor/seq/pop_back.hpp>
 #include <boost/preprocessor/if.hpp>
+#include <boost/preprocessor/facilities/is_empty.hpp>
 #include "../preprocessor.hh"
 
 ///////////////////////////////ih.p////////////////////////////////////////
@@ -41,56 +42,87 @@ namespace senf {
 namespace log {
 namespace detail {
 
-    template <class Stream, class Area>
+    struct na {};
+
+    /// Internal: Compile time configuration for given \a Stream and \a Area
+    template <class Stream, class Area, class QueryStream=Stream, bool Query=true>
     struct Config
     {
-        typedef typename Config<Stream,void>::compileLimit compileLimit;
+        typedef typename Config<na, Area, Stream, Query>::compileLimit compileLimit;
+    };
+
+#   ifndef DOXYGEN
+
+    template <class Area, class QueryStream, bool Query>
+    struct Config<na, Area, QueryStream, Query>
+    {
+        typedef typename Config<QueryStream, na, QueryStream, Query>::compileLimit compileLimit;
+    };
+
+    template <class Stream, class QueryStream, bool Query>
+    struct Config<Stream, na, QueryStream, Query>
+    {
+        typedef typename Config<na, na, QueryStream, Query>::compileLimit compileLimit;
     };
 
-    template <class Stream>
-    struct Config<Stream, void>
+    template <class QueryStream, bool Query>
+    struct Config<na, na, QueryStream, Query>
     {
-        typedef typename Stream::compileLimit compileLimit;
+        typedef typename QueryStream::compileLimit compileLimit;
     };
 
+#   endif
+
 }}}
 
-#define SENF_LOG_SEQ_TO_NAME_(s,data,elem) ::elem
+#define SENF_LOG_CHECK_NA_
+
+#define SENF_LOG_CAT(a,b) SENF_LOG_CAT_I(a,b)
+#define SENF_LOG_CAT_I(a,b) a ## b
+
+#define SENF_LOG_IS_NA(elt) BOOST_PP_IS_EMPTY( SENF_LOG_CAT(SENF_LOG_CHECK_NA, elt) )
+
+#define SENF_LOG_SEQ_TO_NAME_(s,state,elem)                                                       \
+    BOOST_PP_IF( SENF_LOG_IS_NA(elem), senf::log::detail::na, state::elem )
 
 #define SENF_LOG_SEQ_TO_NAME(seq)                                                                 \
-    BOOST_PP_SEQ_FOR_EACH(SENF_LOG_SEQ_TO_NAME_, none, seq)
+    BOOST_PP_SEQ_FOLD_LEFT(SENF_LOG_SEQ_TO_NAME_, , seq)
 
 #define SENF_LOG_PREDECL_(s, state, elem)                                                         \
     namespace elem { state }
 
-#define SENF_LOG_PREDECL(seq)                                                                     \
+#define SENF_LOG_PREDECL_long(seq)                                                                \
     BOOST_PP_SEQ_FOLD_RIGHT( SENF_LOG_PREDECL_,                                                   \
                              class SENF_PP_SEQ_BACK(seq);,                                        \
                              BOOST_PP_SEQ_POP_BACK(seq) )
 
+#define SENF_LOG_PREDECL_short(seq)                                                               \
+   BOOST_PP_IF( SENF_LOG_IS_NA( SENF_PP_SEQ_BACK(seq) ), ; , class SENF_PP_SEQ_BACK(seq); )
+
+#define SENF_LOG_PREDECL(seq)                                                                     \
+    BOOST_PP_CAT(SENF_LOG_PREDECL_,                                                               \
+                 BOOST_PP_IF(BOOST_PP_DEC(BOOST_PP_SEQ_SIZE(seq)),long,short))(seq)
+
 #define SENF_LOG_NIL(x)
 
 #define SENF_LOG_CONF_DEFINE(stream, area, level)                                                 \
     SENF_LOG_PREDECL(stream)                                                                      \
-    BOOST_PP_IF(BOOST_PP_DEC(BOOST_PP_SEQ_SIZE(area)),                                            \
-                SENF_LOG_PREDECL,                                                                 \
-                SENF_LOG_NIL)(area)                                                               \
+    SENF_LOG_PREDECL(area)                                                                        \
     namespace senf { namespace log { namespace detail {                                           \
-        template <>                                                                               \
+        template <class QueryStream>                                                              \
         struct Config< SENF_LOG_SEQ_TO_NAME(stream),                                              \
-                       BOOST_PP_IF(BOOST_PP_DEC(BOOST_PP_SEQ_SIZE(area)),                         \
-                                   SENF_LOG_SEQ_TO_NAME(area),                                    \
-                                   void) >                                                        \
+                       SENF_LOG_SEQ_TO_NAME(area),                                                \
+                       QueryStream,                                                               \
+                       true >                                                                     \
         { typedef senf::log::level compileLimit; };                                               \
     }}}
 
 #ifdef SENF_LOG_CONF
 
-#   define SLC_elt(s, state, elt)                                                                  \
+#   define SLC_elt(r, data, elt) \
         SENF_LOG_CONF_DEFINE elt
 
-    // Need to use fold here to not exhaust the maximum FOR nesting depth ...
-    BOOST_PP_SEQ_FOLD_LEFT(SLC_elt, none, SENF_LOG_CONF)
+    BOOST_PP_SEQ_FOR_EACH(SLC_elt, none, SENF_LOG_CONF)
 
 #   undef SLC_elt