Resolve some warnings from MSVC

Author: d-frey

include/tao/json/events/key_camel_case_to_snake_case.hpp

@@ -51,7 +51,7 @@ namespace tao
                         r += '_';
                      }
                      last_lower = false;
-                     r += std::tolower( c );
+                     r += (char)std::tolower( c );
                   }
                   else {
                      last_lower = std::islower( c );

include/tao/json/events/key_snake_case_to_camel_case.hpp

@@ -37,7 +37,7 @@ namespace tao
                         active = false;
                      }
                      else {
-                        r += std::toupper( c );
+                        r += (char)std::toupper( c );
                         active = false;
                      }
                   }

include/tao/json/events/ubjson/grammar.hpp

@@ -195,7 +195,7 @@ namespace tao
                static Result read_number( Input& in )
                {
                   if( in.size( sizeof( Number ) ) > sizeof( Number ) ) {
-                     const Result result = json::internal::be_to_h< Number >( in.current() + 1 );
+                     const Result result = static_cast< Result >( json::internal::be_to_h< Number >( in.current() + 1 ) );
                      in.bump_in_this_line( 1 + sizeof( Number ) );
                      return result;
                   }

include/tao/json/schema.hpp

@@ -83,7 +83,7 @@ namespace tao
             }
             if( month == 2 ) {
                const bool is_leap_year = ( year % 4 == 0 ) && ( year % 100 != 0 || year % 400 == 0 );
-               if( day > ( is_leap_year ? 29 : 28 ) ) {
+               if( day > ( is_leap_year ? 29u : 28u ) ) {
                   return false;
                }
             }
@@ -974,7 +974,7 @@ namespace tao
                      }
                      break;
                   case HAS_MULTIPLE_OF_DOUBLE:
-                     if( !is_multiple_of( v, m_node->m_multiple_of.d ) ) {
+                     if( !is_multiple_of( (double)v, m_node->m_multiple_of.d ) ) {
                         m_match = false;
                      }
                      break;
@@ -990,7 +990,7 @@ namespace tao
                      }
                      break;
                   case HAS_MULTIPLE_OF_DOUBLE:
-                     if( !is_multiple_of( v, m_node->m_multiple_of.d ) ) {
+                     if( !is_multiple_of( (double)v, m_node->m_multiple_of.d ) ) {
                         m_match = false;
                      }
                      break;
@@ -1001,7 +1001,7 @@ namespace tao
             {
                switch( m_node->m_flags & HAS_MULTIPLE_OF ) {
                   case HAS_MULTIPLE_OF_UNSIGNED:
-                     if( !is_multiple_of( v, m_node->m_multiple_of.u ) ) {
+                     if( !is_multiple_of( v, (double)m_node->m_multiple_of.u ) ) {
                         m_match = false;
                      }
                      break;

src/test/json/type.cpp

@@ -11,7 +11,7 @@ namespace tao
    {
       void unit_test()
       {
-         TEST_ASSERT( sizeof( type ) == 1 );
+         static_assert( sizeof( type ) == 1, "oops" );
 
          TEST_ASSERT( to_string( type::UNINITIALIZED ) == std::string( "uninitialized" ) );
          TEST_ASSERT( to_string( type::DISCARDED ) == std::string( "discarded" ) );