Enum ParseError 

pub enum ParseError {
    UnexpectedToken {
        expected: String,
        found: TokenKind,
        span: SourceSpan,
    },
    UnexpectedEof {
        expected: String,
        span: SourceSpan,
    },
    Expected {
        expected: String,
        span: SourceSpan,
    },
    InvalidNumber {
        span: SourceSpan,
    },
    InvalidIndentation {
        span: SourceSpan,
    },
    MixedConnectionOperators {
        span: SourceSpan,
    },
    EmptyBlock {
        span: SourceSpan,
    },
    LexerError {
        message: String,
        span: SourceSpan,
    },
}

A parse error with rich context for display.

Variants

UnexpectedToken

Fields

expected: String

found: TokenKind

span: SourceSpan

UnexpectedEof

Fields

expected: String

span: SourceSpan

Expected

Fields

expected: String

span: SourceSpan

InvalidNumber

Fields

span: SourceSpan

InvalidIndentation

Fields

span: SourceSpan

MixedConnectionOperators

Fields

span: SourceSpan

EmptyBlock

Fields

span: SourceSpan

LexerError

Fields

message: String

span: SourceSpan

Implementations

impl ParseError

pub fn unexpected_token( expected: impl Into<String>, found: TokenKind, span: Span, ) -> Self

Create an unexpected token error.

pub fn unexpected_eof(expected: impl Into<String>, span: Span) -> Self

Create an unexpected EOF error.

pub fn expected(expected: impl Into<String>, span: Span) -> Self

Create an expected error.

pub fn invalid_number(span: Span) -> Self

Create an invalid number error.

pub fn invalid_indentation(span: Span) -> Self

Create an invalid indentation error.

pub fn mixed_connection_operators(span: Span) -> Self

Create a mixed connection operators error.

pub fn empty_block(span: Span) -> Self

Create an empty block error.

pub fn lexer_error(message: impl Into<String>, span: Span) -> Self

Create a lexer 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 Diagnostic for ParseError

fn code(&self) -> Option<Box<dyn Display + '_>>

Unique diagnostic code that can be used to look up more information about this Diagnostic. Ideally also globally unique, and documented in the toplevel crate’s documentation for easy searching. Rust path format (foo::bar::baz) is recommended, but more classic codes like E0123 or enums will work just fine.

fn help(&self) -> Option<Box<dyn Display + '_>>

Additional help text related to this Diagnostic. Do you have any advice for the poor soul who’s just run into this issue?

fn labels(&self) -> Option<Box<dyn Iterator<Item = LabeledSpan> + '_>>

Labels to apply to this Diagnostic’s Diagnostic::source_code

fn severity(&self) -> Option<Severity>

Diagnostic severity. This may be used by ReportHandlers to change the display format of this diagnostic.

fn url<'a>(&'a self) -> Option<Box<dyn Display + 'a>>

URL to visit for a more detailed explanation/help about this Diagnostic.

fn source_code(&self) -> Option<&dyn SourceCode>

Source code to apply this Diagnostic’s Diagnostic::labels to.

fn related<'a>( &'a self, ) -> Option<Box<dyn Iterator<Item = &'a dyn Diagnostic> + 'a>>

Additional related Diagnostics.

fn diagnostic_source(&self) -> Option<&dyn Diagnostic>

The cause of the error.

impl Display for ParseError

fn fmt(&self, __formatter: &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.