add guard patterns to HIR and implement lowering

2024-08-24 21:56:12 -07:00
parent d117b7f211
commit b579c36224
11 changed files with 40 additions and 7 deletions
--- a/compiler/rustc_ast_lowering/src/pat.rs
+++ b/compiler/rustc_ast_lowering/src/pat.rs
@@ -120,8 +120,9 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> {
                            self.lower_range_end(end, e2.is_some()),
                        );
                    }
-                    // FIXME(guard_patterns): lower pattern guards to HIR
-                    PatKind::Guard(inner, _) => pattern = inner,
+                    PatKind::Guard(inner, cond) => {
+                        break hir::PatKind::Guard(self.lower_pat(inner), self.lower_expr(cond));
+                    }
                    PatKind::Slice(pats) => break self.lower_pat_slice(pats),
                    PatKind::Rest => {
                        // If we reach here the `..` pattern is not semantically allowed.