Struct cfg_expr::error::ParseError

pub struct ParseError<'a> {
    pub original: &'a str,
    pub span: Range<usize>,
    pub reason: Reason,
}

An error related to parsing of a cfg expression

Fields

original: &'a str

The string that was parsed

span: Range<usize>

The range of characters in the original string that result in this error

reason: Reason

The specific reason for the error

Trait Implementations

impl<'a> Debug for ParseError<'a>

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

Formats the value using the given formatter.

impl<'a> Display for ParseError<'a>

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

Formats the value using the given formatter.

impl<'a> Error for ParseError<'a>

fn description(&self) -> &str

Deprecated since 1.41.0:

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

impl<'a> PartialEq<ParseError<'a>> for ParseError<'a>

fn eq(&self, other: &ParseError<'a>) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &ParseError<'a>) -> bool

This method tests for !=.

impl<'a> StructuralPartialEq for ParseError<'a>