Module parser 

Parsing of attribute arguments.

Depending on the attribute parser, an ArgParser can be used to parse the arguments given to an attribute. See its documentation for more information.

This is in essence an (improved) duplicate of rustc_ast/attr/mod.rs. That module is intended to be deleted in its entirety.

FIXME(jdonszelmann): delete rustc_ast/attr/mod.rs

Re-exports

use std::borrow::Borrow; 🔒

use std::fmt::Debug; 🔒

use std::fmt::Debug; 🔒

use std::fmt::Display; 🔒

use std::sync::atomic::AtomicBool; 🔒

use std::sync::atomic::Ordering; 🔒

use rustc_ast::token; 🔒

use rustc_ast::token::Delimiter; 🔒

use rustc_ast::token::MetaVarKind; 🔒

use rustc_ast::tokenstream::TokenStream; 🔒

use rustc_ast::AttrArgs; 🔒

use rustc_ast::Expr; 🔒

use rustc_ast::ExprKind; 🔒

use rustc_ast::LitKind; 🔒

use rustc_ast::MetaItemLit; 🔒

use rustc_ast::Path; 🔒

use rustc_ast::PathSegment; 🔒

use rustc_ast::StmtKind; 🔒

use rustc_ast::UnOp; 🔒

use rustc_ast_pretty::pprust; 🔒

use rustc_attr_ir::AttrPath; 🔒

use rustc_errors::Applicability; 🔒

use rustc_errors::Diag; 🔒

use rustc_errors::PResult; 🔒

use rustc_parse::exp; 🔒

use rustc_parse::parser::ForceCollect; 🔒

use rustc_parse::parser::Parser; 🔒

use rustc_parse::parser::PathStyle; 🔒

use rustc_parse::parser::Recovery; 🔒

use rustc_parse::parser::token_descr; 🔒

use rustc_session::diagnostics::create_lit_error; 🔒

use rustc_session::parse::ParseSess; 🔒

use rustc_span::Ident; 🔒

use rustc_span::Span; 🔒

use rustc_span::Symbol; 🔒

use rustc_span::sym; 🔒

use thin_vec::ThinVec; 🔒

use crate::ShouldEmit; 🔒

use crate::diagnostics::AdditionalCommaSuggestion; 🔒

use crate::diagnostics::ExpectedComma; 🔒

use crate::diagnostics::InvalidMetaItem; 🔒

use crate::diagnostics::InvalidMetaItemQuoteIdentSugg; 🔒

use crate::diagnostics::InvalidMetaItemRemoveNegSugg; 🔒

use crate::diagnostics::MetaBadDelim; 🔒

use crate::diagnostics::MetaBadDelimSugg; 🔒

use crate::diagnostics::SuffixedLiteralInAttribute; 🔒

Structs

MetaItemListParser

MetaItemListParserContext 🔒

MetaItemParser

Utility that deconstructs a MetaItem into usable parts.

NameValueParser

PathParser

Enums

AllowExprMetavar

Whether expansions of expr metavariables from declarative macros are permitted. Used when parsing meta items; currently, only cfg predicates enable this option

ArgParser

Used for parsing attribute arguments.

MetaItemOrLitParser

Inside lists, values could be either literals, or more deeply nested meta items. This enum represents that.

Functions

expr_to_lit 🔒

Type Aliases

OwnedPathParser

RefPathParser