Struct Error 

pub struct Error {
    pub path: String,
    pub line: u32,
    pub column: u32,
    pub message: String,
}

A place in a rule file and what is wrong there.

The compiler’s own diagnostics carry a code, a caret and a source map, and none of that is wanted here. A rule file is read by cargo xtask rules and its errors are read by whoever is editing the rules, in a build log, so the shape that belongs here is the one every other build tool prints: the file, the position, and one sentence. Spending a number out of the compiler’s diagnostic sequence on it would also be wrong, because those numbers are part of what a user of the compiler can look up, and nobody compiling a C program will ever see one of these.

Fields

path: String

The file the rule was read from, as it should be printed.

line: u32

The line, counted from one.

column: u32

The column, counted from one, in characters.

message: String

What is wrong, as a sentence with no trailing full stop.

Trait Implementations

impl Clone for Error

fn clone(&self) -> Error

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Error

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Display for Error

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for Error

impl Error for Error

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl PartialEq for Error

fn eq(&self, other: &Error) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for Error