Module cfg_select 

Re-exports

use rustc_ast::attr::AttrIdGenerator; 🔒

use rustc_ast::tokenstream::TokenStream; 🔒

use rustc_ast::AttrKind; 🔒

use rustc_ast::Expr; 🔒

use rustc_ast::SyntheticAttr; 🔒

use rustc_ast::ast; 🔒

use rustc_attr_ir::CfgEntry; 🔒

use rustc_attr_parsing as attr; 🔒

use rustc_attr_parsing::CfgSelectBranches; 🔒

use rustc_attr_parsing::parse_cfg_select; 🔒

use rustc_expand::base::DummyResult; 🔒

use rustc_expand::base::ExpandResult; 🔒

use rustc_expand::base::ExtCtxt; 🔒

use rustc_expand::base::MacResult; 🔒

use rustc_expand::base::MacroExpanderResult; 🔒

use rustc_expand::expand::DeclaredIdents; 🔒

use rustc_span::Ident; 🔒

use rustc_span::Span; 🔒

use rustc_span::sym; 🔒

use smallvec::SmallVec; 🔒

use crate::diagnostics::CfgSelectNoMatches; 🔒

Macros

forward_to_parser_any_macro 🔒

Structs

CfgSelectResult 🔒

This intermediate structure is used to emit parse errors for the branches that are not chosen. The MacResult instance below parses all branches, emitting any errors it encounters, but only keeps the parse result for the selected branch.

Functions

expand_cfg_select 🔒

mk_attr 🔒

Construct a #[<cfg_trace>] attribute from a CfgEntry. This allows us to keep track of items that were behind a cfg_select!, which is relevant for some diagnostics.

tts_to_mac_result 🔒