perplex_runtime

Enum Symbol

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pub enum Symbol<T, NT> {
    Terminal(T),
    Nonterminal(NT),
}
Expand description

A symbol on the parse stack.

Generic over the type of terminal T and nonterminal NT.

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Terminal(T)

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Nonterminal(NT)

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impl<T, NT> Symbol<T, NT>

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pub fn unwrap_terminal(self) -> T

Return the terminal wrapped in this symbol.

Panics if the symbol is not a terminal.

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pub fn unwrap_nonterminal(self) -> NT

Return the nonterminal wrapped in this symbol.

Panics if the symbol is not a nonterminal.

Auto Trait Implementations§

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impl<T, NT> Freeze for Symbol<T, NT>
where T: Freeze, NT: Freeze,

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impl<T, NT> RefUnwindSafe for Symbol<T, NT>
where T: RefUnwindSafe, NT: RefUnwindSafe,

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impl<T, NT> Send for Symbol<T, NT>
where T: Send, NT: Send,

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impl<T, NT> Sync for Symbol<T, NT>
where T: Sync, NT: Sync,

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impl<T, NT> Unpin for Symbol<T, NT>
where T: Unpin, NT: Unpin,

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impl<T, NT> UnwindSafe for Symbol<T, NT>
where T: UnwindSafe, NT: UnwindSafe,

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.