1 #![feature(associated_type_defaults)]
2 #![feature(box_patterns)]
3 #![feature(exact_size_is_empty)]
5 #![feature(min_specialization)]
7 #![feature(stmt_expr_attributes)]
8 #![feature(trusted_step)]
9 #![recursion_limit = "256"]
10 #![deny(rustc::untranslatable_diagnostic)]
11 #![deny(rustc::diagnostic_outside_of_impl)]
16 extern crate rustc_middle;
18 use rustc_ast::MetaItem;
19 use rustc_hir::def_id::DefId;
20 use rustc_middle::ty::{self, TyCtxt};
21 use rustc_span::symbol::{sym, Symbol};
23 pub use self::drop_flag_effects::{
24 drop_flag_effects_for_function_entry, drop_flag_effects_for_location,
25 move_path_children_matching, on_all_children_bits, on_all_drop_children_bits,
26 on_lookup_result_bits,
28 pub use self::framework::{
29 fmt, graphviz, lattice, visit_results, Analysis, AnalysisDomain, Backward, CallReturnPlaces,
30 Direction, Engine, Forward, GenKill, GenKillAnalysis, JoinSemiLattice, Results, ResultsCursor,
31 ResultsRefCursor, ResultsVisitable, ResultsVisitor, SwitchIntEdgeEffects,
34 use self::move_paths::MoveData;
36 pub mod drop_flag_effects;
37 pub mod elaborate_drops;
46 pub(crate) mod indexes {
47 pub(crate) use super::move_paths::MovePathIndex;
50 pub struct MoveDataParamEnv<'tcx> {
51 pub move_data: MoveData<'tcx>,
52 pub param_env: ty::ParamEnv<'tcx>,
55 pub fn has_rustc_mir_with(tcx: TyCtxt<'_>, def_id: DefId, name: Symbol) -> Option<MetaItem> {
56 for attr in tcx.get_attrs(def_id, sym::rustc_mir) {
57 let items = attr.meta_item_list();
58 for item in items.iter().flat_map(|l| l.iter()) {
59 match item.meta_item() {
60 Some(mi) if mi.has_name(name) => return Some(mi.clone()),