Enum proc_macro2::TokenTree [] [src]

pub enum TokenTree {
    Group(Group),
    Ident(Ident),
    Punct(Punct),
    Literal(Literal),
}

A single token or a delimited sequence of token trees (e.g. [1, (), ..]).

Variants

A token stream surrounded by bracket delimiters.

An identifier.

A single punctuation character (+, ,, $, etc.).

A literal character ('a'), string ("hello"), number (2.3), etc.

Methods

impl TokenTree
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Returns the span of this tree, delegating to the span method of the contained token or a delimited stream.

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Configures the span for only this token.

Note that if this token is a Group then this method will not configure the span of each of the internal tokens, this will simply delegate to the set_span method of each variant.

Trait Implementations

impl Extend<TokenTree> for TokenStream
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Extends a collection with the contents of an iterator. Read more

impl FromIterator<TokenTree> for TokenStream
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Collects a number of token trees into a single stream.

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Creates a value from an iterator. Read more

impl Clone for TokenTree
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Returns a copy of the value. Read more

1.0.0
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Performs copy-assignment from source. Read more

impl From<Group> for TokenTree
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Performs the conversion.

impl From<Ident> for TokenTree
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Performs the conversion.

impl From<Punct> for TokenTree
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Performs the conversion.

impl From<Literal> for TokenTree
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Performs the conversion.

impl Display for TokenTree
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Prints the token tree as a string that is supposed to be losslessly convertible back into the same token tree (modulo spans), except for possibly TokenTree::Groups with Delimiter::None delimiters and negative numeric literals.

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Formats the value using the given formatter. Read more

impl Debug for TokenTree
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Prints token tree in a form convenient for debugging.

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Formats the value using the given formatter. Read more