Skip to content

dbg macro: align line number to 4 digits #58753

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Closed
wants to merge 1 commit into from
Closed

dbg macro: align line number to 4 digits #58753

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
24 changes: 12 additions & 12 deletions src/libstd/macros.rs
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -221,7 +221,7 @@ macro_rules! eprintln {
/// ```rust
/// let a = 2;
/// let b = dbg!(a * 2) + 1;
/// // ^-- prints: [src/main.rs:2] a * 2 = 4
/// // ^-- prints: [src/main.rs:0002] a * 2 = 4
/// assert_eq!(b, 5);
/// ```
///
Expand Down Expand Up @@ -267,7 +267,7 @@ macro_rules! eprintln {
/// This prints to [stderr]:
///
/// ```text,ignore
/// [src/main.rs:4] n.checked_sub(4) = None
/// [src/main.rs:0004] n.checked_sub(4) = None
/// ```
///
/// Naive factorial implementation:
Expand All @@ -287,15 +287,15 @@ macro_rules! eprintln {
/// This prints to [stderr]:
///
/// ```text,ignore
/// [src/main.rs:3] n <= 1 = false
/// [src/main.rs:3] n <= 1 = false
/// [src/main.rs:3] n <= 1 = false
/// [src/main.rs:3] n <= 1 = true
/// [src/main.rs:4] 1 = 1
/// [src/main.rs:5] n * factorial(n - 1) = 2
/// [src/main.rs:5] n * factorial(n - 1) = 6
/// [src/main.rs:5] n * factorial(n - 1) = 24
/// [src/main.rs:11] factorial(4) = 24
/// [src/main.rs:0003] n <= 1 = false
/// [src/main.rs:0003] n <= 1 = false
/// [src/main.rs:0003] n <= 1 = false
/// [src/main.rs:0003] n <= 1 = true
/// [src/main.rs:0004] 1 = 1
/// [src/main.rs:0005] n * factorial(n - 1) = 2
/// [src/main.rs:0005] n * factorial(n - 1) = 6
/// [src/main.rs:0005] n * factorial(n - 1) = 24
/// [src/main.rs:0011] factorial(4) = 24
/// ```
///
/// The `dbg!(..)` macro moves the input:
Expand All @@ -319,7 +319,7 @@ macro_rules! dbg {
// of temporaries - https://stackoverflow.com/a/48732525/1063961
match $val {
tmp => {
eprintln!("[{}:{}] {} = {:#?}",
eprintln!("[{}:{:04}] {} = {:#?}",
file!(), line!(), stringify!($val), &tmp);
tmp
}
Expand Down
16 changes: 8 additions & 8 deletions src/test/ui/rfc-2361-dbg-macro/dbg-macro-expected-behavior.rs
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -55,31 +55,31 @@ fn test() {

fn validate_stderr(stderr: Vec<String>) {
assert_eq!(stderr, &[
":21] Unit = Unit",
":0021] Unit = Unit",

":22] a = Unit",
":0022] a = Unit",

":28] Point{x: 42, y: 24,} = Point {",
":0028] Point{x: 42, y: 24,} = Point {",
" x: 42,",
" y: 24",
"}",

":29] b = Point {",
":0029] b = Point {",
" x: 42,",
" y: 24",
"}",

":38] &a = NoCopy(",
":0038] &a = NoCopy(",
" 1337",
")",

":38] dbg!(& a) = NoCopy(",
":0038] dbg!(& a) = NoCopy(",
" 1337",
")",
":43] f(&42) = 42",
":0043] f(&42) = 42",

"before",
":48] { foo += 1; eprintln!(\"before\"); 7331 } = 7331",
":0048] { foo += 1; eprintln!(\"before\"); 7331 } = 7331",
]);
}

Expand Down