Add multipart_suggestion_with_applicability

src/librustc_errors/diagnostic.rs

@@ -278,10 +278,11 @@ impl Diagnostic {
         self
     }
 
-    pub fn multipart_suggestion(
+    pub fn multipart_suggestion_with_applicability(
         &mut self,
         msg: &str,
         suggestion: Vec<(Span, String)>,
+        applicability: Applicability,
     ) -> &mut Self {
         self.suggestions.push(CodeSuggestion {
             substitutions: vec![Substitution {
@@ -292,11 +293,23 @@ impl Diagnostic {
             }],
             msg: msg.to_owned(),
             show_code_when_inline: true,
-            applicability: Applicability::Unspecified,
+            applicability,
         });
         self
     }
 
+    pub fn multipart_suggestion(
+        &mut self,
+        msg: &str,
+        suggestion: Vec<(Span, String)>,
+    ) -> &mut Self {
+        self.multipart_suggestion_with_applicability(
+                                                     msg, 
+                                                     suggestion,
+                                                     Applicability::Unspecified
+                                                    )
+    }
+
     /// Prints out a message with multiple suggested edits of the code.
     pub fn span_suggestions(&mut self, sp: Span, msg: &str, suggestions: Vec<String>) -> &mut Self {
         self.suggestions.push(CodeSuggestion {

src/librustc_errors/diagnostic_builder.rs

@@ -187,6 +187,23 @@ impl<'a> DiagnosticBuilder<'a> {
                                      msg: &str,
                                      suggestions: Vec<String>)
                                      -> &mut Self);
+
+    pub fn multipart_suggestion_with_applicability(&mut self,
+                                              msg: &str,
+                                              suggestion: Vec<(Span, String)>,
+                                              applicability: Applicability)
+                                              -> &mut Self {
+        if !self.allow_suggestions {
+            return self
+        }
+        self.diagnostic.multipart_suggestion_with_applicability(
+            msg,
+            suggestion,
+            applicability,
+        );
+        self
+    }
+
     pub fn span_suggestion_with_applicability(&mut self,
                                               sp: Span,
                                               msg: &str,