Enum wagon_parser::firstpass::WagCheckError

pub enum WagCheckError {
    DuplicateParameters(String, SpannableNode<Ident>),
    DisparateParameters {
        terminal: String,
        offender: Vec<SpannableNode<Ident>>,
        expected: Vec<SpannableNode<Ident>>,
        span: Span,
    },
}

Any error that can occur during the rewriting/checking process.

Variants

DuplicateParameters(String, SpannableNode<Ident>)

A rule wants multiple parameters, but they are the exact same.

DisparateParameters

Fields

terminal: String

The non-terminal which has the issue.

offender: Vec<SpannableNode<Ident>>

The specific Ident which caused the issue.

expected: Vec<SpannableNode<Ident>>

The Ident we expected to see.

span: Span

The span information of this node.

Two alternative instances of a rule want different parameters.

Trait Implementations

impl Debug for WagCheckError

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

Formats the value using the given formatter.

impl Display for WagCheckError

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

Formats the value using the given formatter.

impl Error for WagCheckError

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

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 ErrorReport for WagCheckError

fn msg(&self) -> (String, String)

Return a tuple description of the error message.

fn span(self) -> Span

Return span information for this error.

fn report(self) -> ((String, String), Range<usize>, Option<String>)

where Self: Sized,

Return the full error report

fn source(&self) -> Option<String>

Return the text source for this error message.

impl From<WagCheckError> for WagParseError

fn from(value: WagCheckError) -> Self

Converts to this type from the input type.

impl PartialEq for WagCheckError

fn eq(&self, other: &WagCheckError) -> bool

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

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for WagCheckError

impl StructuralPartialEq for WagCheckError