Enum proc_macro::TokenTree1.29.0[][src]

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

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

Variants

Group(Group)

A token stream surrounded by bracket delimiters.

Ident(Ident)

An identifier.

Punct(Punct)

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

Literal(Literal)

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

Implementations

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

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

Returns a copy of the value. Read more

Performs copy-assignment from source. Read more

Prints token tree in a form convenient for debugging.

Formats the value using the given formatter. Read more

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.

Formats the value using the given formatter. Read more

Extends a collection with the contents of an iterator. Read more

🔬 This is a nightly-only experimental API. (extend_one #72631)

Extends a collection with exactly one element.

🔬 This is a nightly-only experimental API. (extend_one #72631)

Reserves capacity in a collection for the given number of additional elements. Read more

Performs the conversion.

Performs the conversion.

Performs the conversion.

Performs the conversion.

Creates a token stream containing a single token tree.

Performs the conversion.

Collects a number of token trees into a single stream.

Creates a value from an iterator. Read more

Converts the given value to a String. Read more

Auto Trait Implementations

Blanket Implementations

Gets the TypeId of self. Read more

Immutably borrows from an owned value. Read more

Mutably borrows from an owned value. Read more

Performs the conversion.

Performs the conversion.

The resulting type after obtaining ownership.

Creates owned data from borrowed data, usually by cloning. Read more

🔬 This is a nightly-only experimental API. (toowned_clone_into #41263)

recently added

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

Converts the given value to a String. Read more

The type returned in the event of a conversion error.

Performs the conversion.

The type returned in the event of a conversion error.

Performs the conversion.