Module proc_macro2

A preferred wrapper around the standard proc_macro crate.

See crate ::proc_macro2.

Modules

extra

Items which do not have a correspondence to any API in the proc_macro crate, but are necessary to include in proc-macro2.

token_stream

Public implementation details for the TokenStream type, such as iterators.

Structs

Group

A delimited token stream.

Ident

A word of Rust code, which may be a keyword or legal variable name.

LexError

Error returned from TokenStream::from_str.

LineColumn

A line-column pair representing the start or end of a Span.

Literal

A literal string ("hello"), byte string (b"hello"), character ('a'), byte character (b'a'), an integer or floating point number with or without a suffix (1, 1u8, 2.3, 2.3f32).

Punct

A Punct is a single punctuation character like +, - or #.

Span

A region of source code, along with macro expansion information.

TokenStream

An abstract stream of tokens, or more concretely a sequence of token trees.

Enums

Delimiter

Describes how a sequence of token trees is delimited.

Spacing

Whether a Punct is followed immediately by another Punct or followed by another token or whitespace.

TokenTree

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