NoneGroup

Struct NoneGroup 

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pub struct NoneGroup(pub Group);
Expand description

A opaque group of tokens within a None

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§0: Group

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impl Clone for NoneGroup

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fn clone(&self) -> NoneGroup

Returns a duplicate of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for NoneGroup

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

Formats the value using the given formatter. Read more
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impl From<NoneGroup> for Group

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fn from(group: NoneGroup) -> Group

Converts to this type from the input type.
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impl From<NoneGroup> for TokenTree

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fn from(group: NoneGroup) -> TokenTree

Converts to this type from the input type.
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impl GroupDelimiter for NoneGroup

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fn delimiter(&self) -> Delimiter

The surrounding Delimiter of the group.
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impl Parser for NoneGroup

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fn parser( tokens: &mut ShadowCountedIter<'_, <TokenStream as IntoIterator>::IntoIter>, ) -> Result<NoneGroup, Error>

The actual parsing function that must be implemented. This mutates the tokens iterator directly. It should not be called from user code except for implementing parsers itself and then only when the rules below are followed. Read more
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impl ToTokens for NoneGroup

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fn to_tokens(&self, tokens: &mut TokenStream)

Write &self to the given TokenStream.
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fn to_token_iter( &self, ) -> ShadowCountedIter<'_, <TokenStream as IntoIterator>::IntoIter>

Convert &self into a TokenIter object.
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fn into_token_iter<'a>( self, ) -> ShadowCountedIter<'a, <TokenStream as IntoIterator>::IntoIter>
where Self: Sized,

Convert self into a TokenIter object.
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fn to_token_stream(&self) -> TokenStream

Convert &self into a TokenStream object.
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fn into_token_stream(self) -> TokenStream
where Self: Sized,

Convert self into a TokenStream object.
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fn tokens_to_string(&self) -> String

Convert &self into a String object. This is mostly used in the test suite to compare the outputs. When the input is a &str then this parses it and returns a normalized String.

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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> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. 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> Parse for T
where T: Parser,

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fn parse( tokens: &mut ShadowCountedIter<'_, <TokenStream as IntoIterator>::IntoIter>, ) -> Result<Self, Error>

This is the user facing API to parse grammatical entities. Calls a parser() within a transaction. Commits changes on success and returns the parsed value. Read more
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fn parse_all( tokens: &mut ShadowCountedIter<'_, <TokenStream as IntoIterator>::IntoIter>, ) -> Result<Self, Error>

Exhaustive parsing within a transaction. This is a convenience method that implies a EndOfStream at the end. Thus it will error if parsing is not exhaustive. Read more
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fn parse_with<T>( tokens: &mut ShadowCountedIter<'_, <TokenStream as IntoIterator>::IntoIter>, f: impl FnOnce(Self, &mut ShadowCountedIter<'_, <TokenStream as IntoIterator>::IntoIter>) -> Result<T, Error>, ) -> Result<T, Error>

Parse a value in a transaction, pass it to a FnOnce(Self, &mut TokenIter) -> Result<T> closure which creates a new result or returns an Error. Read more
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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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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.