I'm adding a bit amount of tracing and debugging code into a class that I'm refactoring.
I have a Trace object which has some filtering properties and methods bool CanTrace(Level, , TracePropertyList = no_additional_properties) and bool Trace(Level, string, TracePropertyList = no_additional_properties).
There are already many places in the code where this trace object is used, and the string argument to the Trace method is usually some expression that I would like to avoid evaluating if I'm not going to end up outputting tracing info.
Repeating the chunk of code
if(trace.CanTrace(LEVEL_INFO, some_props))
trace.Trace(LEVEL_INFO, consume_time().to_str(), some_props);
is ugly, and I'd like something shorter.
I was thinking about the macros
#define TRACE_WITH_PROPS(LEVEL,STRING,PROPS) //...
and
#define TRACE(LEVEL,STRING) //...
Is there a better way to do this? Possibly with templates or C++11? I don't like hiding things from the compiler with defines, and I'm doing my best to remove some macros elsewhere in this codebase.