Module quoted 

Re-exports

use rustc_ast::token; 🔒

use rustc_ast::token::Delimiter; 🔒

use rustc_ast::token::IdentKind; 🔒

use rustc_ast::token::NonterminalKind; 🔒

use rustc_ast::token::Token; 🔒

use rustc_ast::tokenstream::TokenStreamIter; 🔒

use rustc_ast::NodeId; 🔒

use rustc_ast::tokenstream; 🔒

use rustc_ast_pretty::pprust; 🔒

use rustc_errors::Applicability; 🔒

use rustc_feature::Features; 🔒

use rustc_session::Session; 🔒

use rustc_session::diagnostics::feature_err; 🔒

use rustc_span::edition::Edition; 🔒

use rustc_span::Ident; 🔒

use rustc_span::Span; 🔒

use rustc_span::Symbol; 🔒

use rustc_span::kw; 🔒

use rustc_span::sym; 🔒

use crate::diagnostics; 🔒

use crate::mbe::macro_parser::count_metavar_decls; 🔒

use crate::mbe::Delimited; 🔒

use crate::mbe::KleeneOp; 🔒

use crate::mbe::KleeneToken; 🔒

use crate::mbe::MetaVarExpr; 🔒

use crate::mbe::SequenceRepetition; 🔒

use crate::mbe::TokenTree; 🔒

Enums

RulePart 🔒

Which part of a macro rule we’re parsing

Constants

VALID_FRAGMENT_NAMES_MSG 🔒

Functions

kleene_op 🔒

Takes a token and returns Some(KleeneOp) if the token is + * or ?. Otherwise, return None.

maybe_emit_macro_metavar_expr_concat_feature 🔒

maybe_emit_macro_metavar_expr_feature 🔒

Asks for the macro_metavar_expr feature if it is not enabled

parse 🔒

Takes a tokenstream::TokenStream and returns a Vec<self::TokenTree>. Specifically, this takes a generic TokenStream, such as is used in the rest of the compiler, and returns a collection of TokenTree for use in parsing a macro.

parse_kleene_op 🔒

Parse the next token tree of the input looking for a KleeneOp. Returns

parse_one_tt 🔒

Takes a tokenstream::TokenTree and returns a self::TokenTree. Like parse, but for a single token tree. Emits errors to sess if needed.

parse_sep_and_kleene_op 🔒

Attempt to parse a single Kleene star, possibly with a separator.

parse_tree 🔒

Takes a tokenstream::TokenTree and returns a self::TokenTree. Specifically, this takes a generic TokenTree, such as is used in the rest of the compiler, and returns a TokenTree for use in parsing a macro.

span_dollar_dollar_or_metavar_in_the_lhs_err 🔒