1 | //! Private macro used for error handling. |
2 | |
3 | /// Logs an error, ignores an `Ok` value. |
4 | macro_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. |
17 | macro_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 | crate::error::log_error(&e); |
26 | let closure = $el; |
27 | return closure(); |
28 | } |
29 | } |
30 | }; |
31 | } |
32 | |
33 | /// Print an error message to stdout. Format is the same as println! or format! |
34 | macro_rules! error { |
35 | ($($arg:tt)*) => ( |
36 | println!("Criterion.rs ERROR: {}" , &format!($($arg)*)) |
37 | ) |
38 | } |
39 | |
40 | /// Print a debug message to stdout. Format is the same as println! or format! |
41 | macro_rules! info { |
42 | ($($arg:tt)*) => ( |
43 | if $crate::debug_enabled() { |
44 | println!("Criterion.rs DEBUG: {}" , &format!($($arg)*)) |
45 | } |
46 | ) |
47 | } |
48 | |