started pp parsing of assertions

test/pp_func_traits/Jamfile.v2

@@ -20,6 +20,7 @@ test-pp ref ;
 test-pp except ;
 test-pp trailing_return ;
 test-pp virt ;
+test-pp precondition ;
 
 # TODO: Try to automatically run and test wave too... Maybe something like this:
 #   SHELL "wave access.cpp" ;

test/pp_func_traits/precondition.cpp

@@ -0,0 +1,59 @@
+
+#include <boost/preprocessor/config/config.hpp>
+#if !BOOST_PP_VARIADICS
+#   error "this compiler does not support variadic macros"
+#else
+
+#include <boost/contract/ext_/preprocessor/traits/func/aux_/index.hpp>
+#define BOOST_CONTRACT_EXT_PP_FUNC_TRAITS_AUX_INDEX_TEST \
+    BOOST_CONTRACT_EXT_PP_FUNC_TRAITS_AUX_PRECONDITION_INDEX
+
+#include "../aux_/pp_traits.hpp"
+#include <boost/contract/ext_/preprocessor/traits/func.hpp>
+#include <boost/preprocessor/facilities/empty.hpp>
+
+#define BOOST_CONTRACT_TEST_(precondition_) \
+    BOOST_CONTRACT_TEST_AUX_PP_TRAITS( \
+        BOOST_CONTRACT_EXT_PP_FUNC_TRAITS_PRECONDITION, \
+        BOOST_CONTRACT_EXT_PP_FUNC_TRAITS, \
+        (std::map<int, char>&) (f) ( int x, (std::map<int, char>&) y ) \
+                throw(int, double) override final, \
+        precondition_, \
+        postcondition(x == 0 ? y.empty() : true), \
+        precondition_ \
+    )
+
+int main ( ) {
+    BOOST_CONTRACT_TEST_( BOOST_PP_EMPTY() )
+
+    BOOST_CONTRACT_TEST_( precondition( ) )
+
+    BOOST_CONTRACT_TEST_( precondition( x >= 0, y, z ) )
+
+    BOOST_CONTRACT_TEST_(
+        precondition(
+            namespace (py) as boost::python,
+
+            using namespace std,
+            using std::placeholders::_1,
+            using typename T::value_type,
+            using (std::map<int, char>::insert),
+            using (typename M<int, char>::key_type),
+            using (iv) as vector<int>,
+            using (icmap) as (map<int, char>),
+            template( typename T ) using (vt) as vector<T>,
+            template( typename T, int U ) using (xtu) as (x<T, int, U>),
+
+            typedef unsigned long ul,
+            typedef (map<int, char>) icmap,
+
+            x >= 0,
+            y.size() == x,
+        )
+    )
+
+    return BOOST_CONTRACT_TEST_AUX_PP_TRAITS_REPORT_ERRORS;
+}
+
+#endif // variadics
+

test/pp_func_traits/virt.cpp

@@ -12,8 +12,6 @@
 #include <boost/contract/ext_/preprocessor/traits/func.hpp>
 #include <boost/preprocessor/facilities/empty.hpp>
 
-#include <boost/preprocessor/variadic/size.hpp>
-
 #define BOOST_CONTRACT_TEST_VIRT_(func_traits) \
     BOOST_CONTRACT_EXT_PP_FUNC_TRAITS_FINAL(func_traits) \
     BOOST_CONTRACT_EXT_PP_FUNC_TRAITS_OVERRIDE(func_traits)