Struct ParseError 

pub struct ParseError {
    pub message: String,
    pub position: Option<usize>,
    pub line: Option<usize>,
    pub column: Option<usize>,
}

Error type for parsing failures

Fields

message: String

Error message describing what went wrong

position: Option<usize>

Position in the input where the error occurred

line: Option<usize>

Line number where the error occurred (if available)

column: Option<usize>

Column number where the error occurred (if available)

Implementations

impl ParseError

pub fn new(message: impl Into<String>) -> Self

Create a new parse error with just a message

pub fn at_position(message: impl Into<String>, position: usize) -> Self

Create a parse error with position information

pub fn at_location( message: impl Into<String>, line: usize, column: usize, ) -> Self

Create a parse error with line and column information

pub fn with_position(self, position: usize) -> Self

Add position information to an existing error

pub fn with_location(self, line: usize, column: usize) -> Self

Add line/column information to an existing error

Trait Implementations

impl Clone for ParseError

fn clone(&self) -> ParseError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ParseError

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

Formats the value using the given formatter.

impl Display for ParseError

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

Formats the value using the given formatter.

impl Error for ParseError

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 From<ParseError> for EvalError

fn from(msg: ParseError) -> Self

Converts to this type from the input type.