bjoernager/rust
bjoernager/rust
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Actually infer args in visitors

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This commit is contained in:
kadmin 2021-05-06 15:33:44 +00:00
parent 3605675bb1
commit 8759f00c73
30 changed files with 257 additions and 97 deletions
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10
compiler/rustc_ast_lowering/src/lib.rs
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@ -51,7 +51,7 @@ use rustc_hir::def::{DefKind, Namespace, PartialRes, PerNS, Res};
use rustc_hir::def_id::{DefId, DefIdMap, DefPathHash, LocalDefId, CRATE_DEF_ID};
use rustc_hir::definitions::{DefKey, DefPathData, Definitions};
use rustc_hir::intravisit;
use rustc_hir::{ConstArg, GenericArg, ParamName};
use rustc_hir::{ConstArg, GenericArg, InferKind, ParamName};
use rustc_index::vec::{Idx, IndexVec};
use rustc_session::lint::builtin::{BARE_TRAIT_OBJECTS, MISSING_ABI};
use rustc_session::lint::{BuiltinLintDiagnostics, LintBuffer};
@ -1219,9 +1219,13 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> {
ast::GenericArg::Lifetime(lt) => GenericArg::Lifetime(self.lower_lifetime(&lt)),
ast::GenericArg::Type(ty) => {
match ty.kind {
TyKind::Infer => {
TyKind::Infer if self.sess.features_untracked().generic_arg_infer => {
let hir_id = self.lower_node_id(ty.id);
return GenericArg::Infer(hir::InferArg { hir_id, span: ty.span });
return GenericArg::Infer(hir::InferArg {
hir_id,
span: ty.span,
kind: InferKind::Type,
});
}
// We parse const arguments as path types as we cannot distinguish them during
// parsing. We try to resolve that ambiguity by attempting resolution in both the