criterion/
macros_private.rs

1//! Private macro used for error handling.
2
3/// Logs an error, ignores an `Ok` value.
4macro_rules! log_if_err {
5    ($x:expr) => {
6        let closure = || {
7            try_else_return!($x);
8        };
9        closure();
10    };
11}
12
13/// Matches a result, returning the `Ok` value in case of success,
14/// exits the calling function otherwise.
15/// A closure which returns the return value for the function can
16/// be passed as second parameter.
17macro_rules! try_else_return {
18    ($x:expr) => {
19        try_else_return!($x, || {});
20    };
21    ($x:expr, $el:expr) => {
22        match $x {
23            Ok(x) => x,
24            Err(e) => {
25                ::error::log_error(&e);
26                let closure = $el;
27                return closure();
28            }
29        }
30    };
31}
32
33/// Print an error message to stdout. Format is the same as println! or format!
34macro_rules! error {
35    ($($arg:tt)*) => (
36        println!("Criterion.rs ERROR: {}", &format!($($arg)*));
37    )
38}
39
40/// Print a debug message to stdout. Format is the same as println! or format!
41macro_rules! info {
42    ($($arg:tt)*) => (
43        if $crate::debug_enabled() {
44            println!("Criterion.rs DEBUG: {}", &format!($($arg)*));
45        }
46    )
47}