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//! Publicly exposed metric macros are defined here.
//! Although `dipstick` does not have a macro-based API,
//! in some situations they can make instrumented code simpler.

// TODO add #[timer("name")] method annotation processors

/// A convenience macro to wrap a block or an expression with a start / stop timer.
/// Elapsed time is sent to the supplied statsd client after the computation has been performed.
/// Expression result (if any) is transparently returned.
#[macro_export]
macro_rules! time {
    ($timer: expr, $body: expr) => {{
        let start_time = $timer.start();
        let value = $body;
        $timer.stop(start_time);
        value
    }}
}