Add Rich's idea to pass the value into the policy

git-svn-id: svn://svn.code.sf.net/p/loki-lib/code/trunk@954 7ec92016-0320-0410-acc4-a06ded1c099a
This commit is contained in:
syntheticpp 2009-01-28 18:12:10 +00:00
parent c6c68b8391
commit 0ecd4269ce

View file

@ -60,34 +60,36 @@ namespace Loki
////////////////////////////////////////////////////////////////////////////////
template<class T>
struct IgnoreReturnValue
{
static void run()
static void run(const T&)
{
/// Do nothing at all.
}
};
template<class T>
struct TriggerAssert
{
static void run()
static void run(const T&)
{
assert( 0 );
}
};
template<class T>
struct FprintfStderr
{
static void run()
static void run(const T&)
{
fprintf(stderr, "CheckReturn: return value was not checked\n");
}
};
template < class Value , typename OnError = TriggerAssert>
template < class Value , template<class> class OnError = TriggerAssert >
class CheckReturn
{
public:
@ -109,7 +111,7 @@ public:
// If m_checked is false, then a function failed to check the
// return value from a function call.
if (!m_checked)
OnError::run();
OnError<Value>::run(m_value);
}
/// Conversion operator changes CheckReturn back to Value type.