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exception updates

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This commit is contained in:
Daniel Larimer 2014-06-11 21:46:26 -04:00
parent 454da57a32
commit cb69e2385b
3 changed files with 17 additions and 6 deletions
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4
include/fc/exception/exception.hpp
View file

@ -30,7 +30,8 @@ namespace fc
eof_exception_code = 11,
std_exception_code = 13,
invalid_operation_exception_code = 14,
unknown_host_exception_code = 15
unknown_host_exception_code = 15,
null_optional_code = 16
};
/**
@ -276,6 +277,7 @@ namespace fc
*/
FC_DECLARE_EXCEPTION( assert_exception, assert_exception_code, "Assert Exception" );
FC_DECLARE_EXCEPTION( eof_exception, eof_exception_code, "End Of File" );
FC_DECLARE_EXCEPTION( null_optional, null_optional_code, "null optional" );
std::string except_str();

9
include/fc/optional.hpp
View file

@ -9,6 +9,7 @@ namespace fc {
# pragma warning(disable:4521) /* multiple copy ctors */
# pragma warning(disable:4522) /* multiple assignment operators */
#endif
bool assert_optional(bool is_valid ); // defined in exception.cpp
/**
* @brief provides stack-based nullable value similar to boost::optional
@ -188,17 +189,17 @@ namespace fc {
// casts and comparisons, use valid() or !!
explicit operator bool()const { return _valid; }
T& operator*() { assert(_valid); return ref(); }
const T& operator*()const { assert(_valid); return ref(); }
T& operator*() { assert(assert_optional(_valid)); return ref(); }
const T& operator*()const { assert(assert_optional(_valid)); return ref(); }
T* operator->()
{
assert( _valid );
assert( assert_optional(_valid) );
return ptr();
}
const T* operator->()const
{
assert( _valid );
assert( assert_optional(_valid) );
return ptr();
}

10
src/exception.cpp
View file

@ -11,13 +11,14 @@ namespace fc
(parse_error_exception)
(invalid_arg_exception)
(invalid_operation_exception)
(unknown_host_exception)
(key_not_found_exception)
(bad_cast_exception)
(out_of_range_exception)
(canceled_exception)
(assert_exception)
(eof_exception)
(unknown_host_exception)
(null_optional)
)
namespace detail
@ -195,4 +196,11 @@ namespace fc
("key",k)("enum",e) );
}
bool assert_optional(bool is_valid )
{
if( !is_valid )
throw null_optional();
return true;
}
} // fc