Struct ilex::Never

pub struct Never(/* private fields */);

Uninhabited type in lieu of the never type !.

Converts to everything, not constructible.

Trait Implementations

impl Clone for Never

fn clone(&self) -> Never

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Never

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

Formats the value using the given formatter.

impl From<Never> for Any

fn from(value: Never) -> Self

Converts to this type from the input type.

impl From<Never> for Any<'_>

fn from(value: Never) -> Self

Converts to this type from the input type.

impl Ord for Never

fn cmp(&self, other: &Never) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized + PartialOrd,

Restrict a value to a certain interval.

impl PartialEq for Never

fn eq(&self, other: &Never) -> 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 PartialOrd for Never

fn partial_cmp(&self, other: &Never) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

This method tests less than (for self and other) and is used by the < operator.

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

This method tests less than or equal to (for self and other) and is used by the <= operator.

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

This method tests greater than (for self and other) and is used by the > operator.

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

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl Rule for Never

type Token<'lex> = Eof<'lex>

This rule’s corresponding token type.

fn try_from_ref(value: &Any) -> Result<&Self, WrongKind>

Converts a reference to Any to a reference to this kind of rule.

impl Spanned for Never

fn span(&self, _ctx: &Context) -> Span

Returns the span in this syntax element.

fn file<'ctx>(&self, ctx: &'ctx Context) -> File<'ctx>

Forwards to SpanId::file().

fn start(&self, ctx: &Context) -> usize

Forwards to Span::start().

fn end(&self, ctx: &Context) -> usize

Forwards to Span::end().

fn is_empty(&self, ctx: &Context) -> bool

Forwards to Span::is_empty().

fn len(&self, ctx: &Context) -> usize

Forwards to Span::len().

fn text<'ctx>(&self, ctx: &'ctx Context) -> &'ctx str

Forwards to SpanId::text().

fn comments<'ctx>(&self, ctx: &'ctx Context) -> Comments<'ctx>

Forwards to SpanId::comments().

impl<'lex> Token<'lex> for Never

type Rule = Never

The token this rule was parsed from.

fn context(self) -> &'lex Context

The context that owns this token.

fn spec(self) -> &'lex Spec

The spec that lexed this token.

fn lexeme(self) -> Lexeme<Self::Rule>

Returns this token’s Lexeme.

fn rule(self) -> Option<&'lex Self::Rule>

The rule inside of Token::spec() that this token refers to.

impl TryFrom<Any<'_>> for Never

type Error = WrongKind

The type returned in the event of a conversion error.

fn try_from(value: Any<'_>) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<Any> for Never

type Error = WrongKind

The type returned in the event of a conversion error.

fn try_from(value: Any) -> Result<Self, Self::Error>

Performs the conversion.

impl Copy for Never

impl Eq for Never

impl StructuralPartialEq for Never