Struct grass::Error

pub struct Error { /* fields omitted */ }

SassErrors can be either a structured error specific to grass or an io::Error.

In the former case, the best way to interact with the error is to simply print it to the user. The Display implementation of this kind of error mirrors that of the errors dart-sass emits, e.g.

 Error: $number: foo is not a number.
     |
 308 |     color: unit(foo);
     |                 ^^^
     |
 ./input.scss:308:17

The file name, line number, and column are structured in such a way as to allow Visual Studio Code users to go directly to the error by simply clicking the file name.

Note that this is a deviation from the Sass specification.

Trait Implementations

impl Clone for SassError

fn clone(&self) -> SassError

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for SassError

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

Formats the value using the given formatter.

impl Display for SassError

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

Formats the value using the given formatter.

impl Error for SassError

fn description(&self) -> &'static str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

if let Err(e) = "xc".parse::<u32>() { // Print e itself, no need for description(). eprintln!("Error: {}", e); }

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

The lower-level source of this error, if any.

fn backtrace(&self) -> Option<&Backtrace>

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

Returns a stack backtrace, if available, of where this error occurred.

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

👎 Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting