resolve: improve "try using tuple struct" message

This commit improves the tuple struct case added in rust-lang/rust#77341
so that the context is mentioned in more of the message.

Signed-off-by: David Wood <david@davidtw.co>

compiler/rustc_resolve/src/late/diagnostics.rs

@@ -1341,21 +1341,6 @@ fn suggest_using_enum_variant(
 
             let non_suggestable_variant_count = variants.len() - suggestable_variants.len();
 
-            if !suggestable_variants.is_empty() {
-                let msg = if non_suggestable_variant_count == 0 && suggestable_variants.len() == 1 {
-                    "try using the enum's variant"
-                } else {
-                    "try using one of the enum's variants"
-                };
-
-                err.span_suggestions(
-                    span,
-                    msg,
-                    suggestable_variants.drain(..),
-                    Applicability::MaybeIncorrect,
-                );
-            }
-
             let source_msg = if source.is_call() {
                 "to construct"
             } else if matches!(source, PathSource::TupleStruct(..)) {
@@ -1364,6 +1349,21 @@ fn suggest_using_enum_variant(
                 unreachable!()
             };
 
+            if !suggestable_variants.is_empty() {
+                let msg = if non_suggestable_variant_count == 0 && suggestable_variants.len() == 1 {
+                    format!("try {} the enum's variant", source_msg)
+                } else {
+                    format!("try {} one of the enum's variants", source_msg)
+                };
+
+                err.span_suggestions(
+                    span,
+                    &msg,
+                    suggestable_variants.drain(..),
+                    Applicability::MaybeIncorrect,
+                );
+            }
+
             // If the enum has no tuple variants..
             if non_suggestable_variant_count == variants.len() {
                 err.help(&format!("the enum has no tuple variants {}", source_msg));

src/test/ui/did_you_mean/issue-43871-enum-instead-of-variant.stderr

@@ -2,7 +2,7 @@ error[E0423]: expected function, tuple struct or tuple variant, found enum `Opti
   --> $DIR/issue-43871-enum-instead-of-variant.rs:19:13
    |
 LL |     let x = Option(1);
-   |             ^^^^^^ help: try using one of the enum's variants: `std::option::Option::Some`
+   |             ^^^^^^ help: try to construct one of the enum's variants: `std::option::Option::Some`
    |
    = help: you might have meant to construct the enum's non-tuple variant
 
@@ -10,7 +10,7 @@ error[E0532]: expected tuple struct or tuple variant, found enum `Option`
   --> $DIR/issue-43871-enum-instead-of-variant.rs:21:12
    |
 LL |     if let Option(_) = x {
-   |            ^^^^^^ help: try using one of the enum's variants: `std::option::Option::Some`
+   |            ^^^^^^ help: try to match against one of the enum's variants: `std::option::Option::Some`
    |
    = help: you might have meant to match against the enum's non-tuple variant
 
@@ -18,7 +18,7 @@ error[E0532]: expected tuple struct or tuple variant, found enum `Example`
   --> $DIR/issue-43871-enum-instead-of-variant.rs:27:12
    |
 LL |     if let Example(_) = y {
-   |            ^^^^^^^ help: try using one of the enum's variants: `Example::Ex`
+   |            ^^^^^^^ help: try to match against one of the enum's variants: `Example::Ex`
    |
    = help: you might have meant to match against the enum's non-tuple variant
 note: the enum is defined here

src/test/ui/issues/issue-73427.stderr

@@ -118,7 +118,7 @@ LL | |     Tuple(),
 LL | |     Unit,
 LL | | }
    | |_^
-help: try using one of the enum's variants
+help: try to construct one of the enum's variants
    |
 LL |     let x = A::TupleWithFields(3);
    |             ^^^^^^^^^^^^^^^^^^
@@ -143,7 +143,7 @@ LL | |     Tuple(),
 LL | |     Unit,
 LL | | }
    | |_^
-help: try using one of the enum's variants
+help: try to match against one of the enum's variants
    |
 LL |     if let A::TupleWithFields(3) = x { }
    |            ^^^^^^^^^^^^^^^^^^