Enum NativeParseError 

pub enum NativeParseError {
    Lex(LexError),
    Unexpected {
        found: String,
        expected: &'static str,
        span: Span,
    },
    MissingOperand {
        operator: String,
        span: Span,
    },
    NewlineInApplication {
        span: Span,
    },
    InvalidAssignmentTarget {
        span: Span,
    },
    InvalidLambdaParameters {
        span: Span,
    },
    Unsupported {
        syntax: String,
        span: Span,
    },
}

An error produced by the native lexer or precedence parser.

Variants

Lex(LexError)

Tokenization failed before parsing began.

Unexpected

The parser encountered a token that cannot occur in this position.

Fields

found: String

A readable description of the received token.

expected: &'static str

A readable description of the required syntax.

span: Span

The received token or end-of-input position.

MissingOperand

A prefix or binary operator has no operand.

Fields

operator: String

The operator spelling.

span: Span

The operator or end-of-input position.

NewlineInApplication

Implicit function application crossed a top-level line break.

Fields

span: Span

The token following the line break.

InvalidAssignmentTarget

The left side of an assignment is not assignable.

Fields

span: Span

The assignment operator span.

InvalidLambdaParameters

The left side of a lambda arrow is not a parameter form.

Fields

span: Span

The lambda arrow span.

Unsupported

The grammar recognizes syntax that this native backend cannot lower yet.

Fields

syntax: String

The unsupported syntax spelling.

span: Span

The unsupported token span.

Trait Implementations

impl Debug for NativeParseError

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

Formats the value using the given formatter.

impl Display for NativeParseError

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

Formats the value using the given formatter.

impl Error for NativeParseError

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 Spanned for NativeParseError

fn span(&self) -> Span

Returns the smallest span covering this value.