Module `proc_macro2`

A preferred wrapper around the standard proc_macro crate.

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.

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.
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.

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, (), ..]).