Auto merge of #53815 - F001:if-let-guard, r=petrochenkov

[rust.git] / src / librustc_resolve / lib.rs

diff --git a/src/librustc_resolve/lib.rs b/src/librustc_resolve/lib.rs
index 78c518aea961da2b419c07ca4370c5aa7bbff5f7..0f6a97423091796dc83d97866b4a8d238c99f4bc 100644 (file)
--- a/src/librustc_resolve/lib.rs
+++ b/src/librustc_resolve/lib.rs
@@ -70,7 +70,7 @@
 use syntax::ptr::P;
 
 use syntax_pos::{Span, DUMMY_SP, MultiSpan};
-use errors::{DiagnosticBuilder, DiagnosticId};
+use errors::{Applicability, DiagnosticBuilder, DiagnosticId};
 
 use std::cell::{Cell, RefCell};
 use std::cmp;
@@ -221,9 +221,12 @@ fn resolve_struct_error<'sess, 'a>(resolver: &'sess Resolver,
             let sugg_msg = "try using a local type parameter instead";
             if let Some((sugg_span, new_snippet)) = cm.generate_local_type_param_snippet(span) {
                 // Suggest the modification to the user
-                err.span_suggestion(sugg_span,
-                                    sugg_msg,
-                                    new_snippet);
+                err.span_suggestion_with_applicability(
+                    sugg_span,
+                    sugg_msg,
+                    new_snippet,
+                    Applicability::MachineApplicable,
+                );
             } else if let Some(sp) = cm.generate_fn_name_span(span) {
                 err.span_label(sp, "try adding a local type parameter in this method instead");
             } else {
@@ -2698,7 +2701,10 @@ fn resolve_arm(&mut self, arm: &Arm) {
         // This has to happen *after* we determine which pat_idents are variants
         self.check_consistent_bindings(&arm.pats);
 
-        walk_list!(self, visit_expr, &arm.guard);
+        match arm.guard {
+            Some(ast::Guard::If(ref expr)) => self.visit_expr(expr),
+            _ => {}
+        }
         self.visit_expr(&arm.body);
 
         self.ribs[ValueNS].pop();
@@ -3004,8 +3010,12 @@ fn smart_resolve_path_fragment(&mut self,
                                         enum_path);
                         err.help(&msg);
                     } else {
-                        err.span_suggestion(span, "you can try using the variant's enum",
-                                            enum_path);
+                        err.span_suggestion_with_applicability(
+                            span,
+                            "you can try using the variant's enum",
+                            enum_path,
+                            Applicability::MachineApplicable,
+                        );
                     }
                 }
             }
@@ -3014,20 +3024,32 @@ fn smart_resolve_path_fragment(&mut self,
                     let self_is_available = this.self_value_is_available(path[0].span, span);
                     match candidate {
                         AssocSuggestion::Field => {
-                            err.span_suggestion(span, "try",
-                                                format!("self.{}", path_str));
+                            err.span_suggestion_with_applicability(
+                                span,
+                                "try",
+                                format!("self.{}", path_str),
+                                Applicability::MachineApplicable,
+                            );
                             if !self_is_available {
                                 err.span_label(span, format!("`self` value is only available in \
                                                                methods with `self` parameter"));
                             }
                         }
                         AssocSuggestion::MethodWithSelf if self_is_available => {
-                            err.span_suggestion(span, "try",
-                                                format!("self.{}", path_str));
+                            err.span_suggestion_with_applicability(
+                                span,
+                                "try",
+                                format!("self.{}", path_str),
+                                Applicability::MachineApplicable,
+                            );
                         }
                         AssocSuggestion::MethodWithSelf | AssocSuggestion::AssocItem => {
-                            err.span_suggestion(span, "try",
-                                                format!("Self::{}", path_str));
+                            err.span_suggestion_with_applicability(
+                                span,
+                                "try",
+                                format!("Self::{}", path_str),
+                                Applicability::MachineApplicable,
+                            );
                         }
                     }
                     return (err, candidates);
@@ -4662,15 +4684,16 @@ fn report_conflict<'b>(&mut self,
                     format!("other_{}", name)
                 };
 
-                err.span_suggestion(binding.span,
-                                    rename_msg,
-                                    if snippet.ends_with(';') {
-                                        format!("{} as {};",
-                                                &snippet[..snippet.len()-1],
-                                                suggested_name)
-                                    } else {
-                                        format!("{} as {}", snippet, suggested_name)
-                                    });
+                err.span_suggestion_with_applicability(
+                    binding.span,
+                    rename_msg,
+                    if snippet.ends_with(';') {
+                        format!("{} as {};", &snippet[..snippet.len() - 1], suggested_name)
+                    } else {
+                        format!("{} as {}", snippet, suggested_name)
+                    },
+                    Applicability::MachineApplicable,
+                );
             } else {
                 err.span_label(binding.span, rename_msg);
             }