struct_lit_multiline_style -> struct_lit_single_line (and make it a bool)

Configurations.md

@@ -246,7 +246,7 @@ let lorem = Lorem { ipsum: dolor,
                     sit: amet, };
 ```
 
-See also: [`struct_lit_multiline_style`](#struct_lit_multiline_style), [`indent_style`](#indent_style).
+See also: [`struct_lit_single_line`](#struct_lit_single_line), [`indent_style`](#indent_style).
 
 ### Where predicates
 
@@ -1746,20 +1746,20 @@ let lorem: [ usize; 2 ] = [ ipsum, dolor ];
 
 See also: [`spaces_within_parens_and_brackets`](#spaces_within_parens_and_brackets), [`spaces_within_parens_and_brackets`](#spaces_within_parens_and_brackets).
 
-## `struct_lit_multiline_style`
+## `struct_lit_single_line`
 
-Multiline style on literal structs
+Put small struct literals on a single line
 
-- **Default value**: `"PreferSingle"`
-- **Possible values**: `"ForceMulti"`, `"PreferSingle"`
+- **Default value**: `true`
+- **Possible values**: `true`, `false`
 
-#### `"PreferSingle"` (default):
+#### `true` (default):
 
 ```rust
 let lorem = Lorem { ipsum: dolor, sit: amet };
 ```
 
-#### `"ForceMulti"`:
+#### `false`:
 
 ```rust
 let lorem = Lorem {
@@ -1787,7 +1787,7 @@ let lorem = Lorem { ipsum: dolor, sit: amet };
 #### Lines longer than `struct_lit_width`:
 See [`indent_style`](#indent_style).
 
-See also: [`struct_lit_multiline_style`](#struct_lit_multiline_style), [`indent_style`](#indent_style).
+See also: [`struct_lit_single_line`](#struct_lit_single_line), [`indent_style`](#indent_style).
 
 ## `struct_variant_width`
 

src/config.rs

@@ -100,22 +100,6 @@ impl Density {
     }
 }
 
-configuration_option_enum! { MultilineStyle:
-    // Use horizontal layout if it fits in one line, fall back to vertical
-    PreferSingle,
-    // Use vertical layout
-    ForceMulti,
-}
-
-impl MultilineStyle {
-    pub fn to_list_tactic(self) -> ListTactic {
-        match self {
-            MultilineStyle::PreferSingle => ListTactic::HorizontalVertical,
-            MultilineStyle::ForceMulti => ListTactic::Vertical,
-        }
-    }
-}
-
 configuration_option_enum! { ReportTactic:
     Always,
     Unnumbered,
@@ -563,8 +547,8 @@ create_config! {
     where_density: Density, Density::Vertical, false, "Density of a where clause";
     where_single_line: bool, false, false, "To force single line where layout";
     where_layout: ListTactic, ListTactic::Vertical, false, "Element layout inside a where clause";
-    struct_lit_multiline_style: MultilineStyle, MultilineStyle::PreferSingle, false,
-        "Multiline style on literal structs";
+    struct_lit_single_line: bool, true, false,
+        "Put small struct literals on a single line";
     report_todo: ReportTactic, ReportTactic::Never, false,
         "Report all, none or unnumbered occurrences of TODO in source file comments";
     report_fixme: ReportTactic, ReportTactic::Never, false,

src/expr.rs

@@ -21,7 +21,7 @@ use closures;
 use codemap::{LineRangeUtils, SpanUtils};
 use comment::{combine_strs_with_missing_comments, contains_comment, recover_comment_removed,
               rewrite_comment, rewrite_missing_comment, FindUncommented};
-use config::{Config, ControlBraceStyle, IndentStyle, MultilineStyle};
+use config::{Config, ControlBraceStyle, IndentStyle};
 use lists::{definitive_tactic, itemize_list, shape_for_tactic, struct_lit_formatting,
             struct_lit_shape, struct_lit_tactic, write_list, DefinitiveListTactic, ListFormatting,
             ListItem, ListTactic, Separator, SeparatorPlace, SeparatorTactic};
@@ -2346,8 +2346,7 @@ pub fn wrap_struct_field(
     one_line_width: usize,
 ) -> String {
     if context.config.indent_style() == IndentStyle::Block
-        && (fields_str.contains('\n')
-            || context.config.struct_lit_multiline_style() == MultilineStyle::ForceMulti
+        && (fields_str.contains('\n') || !context.config.struct_lit_single_line()
             || fields_str.len() > one_line_width)
     {
         format!(

src/lists.rs

@@ -796,7 +796,8 @@ pub fn struct_lit_tactic(
     if let Some(h_shape) = h_shape {
         let prelim_tactic = match (context.config.indent_style(), items.len()) {
             (IndentStyle::Visual, 1) => ListTactic::HorizontalVertical,
-            _ => context.config.struct_lit_multiline_style().to_list_tactic(),
+            _ if context.config.struct_lit_single_line() => ListTactic::HorizontalVertical,
+            _ => ListTactic::Vertical,
         };
         definitive_tactic(items, prelim_tactic, Separator::Comma, h_shape.width)
     } else {

tests/source/configs-struct_lit_single_line-false.rs

@@ -1,4 +1,4 @@
-// rustfmt-struct_lit_multiline_style: ForceMulti
+// rustfmt-struct_lit_single_line: false
 // Struct literal multiline-style
 
 fn main() {

tests/source/configs-struct_lit_single_line-true.rs

@@ -1,4 +1,4 @@
-// rustfmt-struct_lit_multiline_style: PreferSingle
+// rustfmt-struct_lit_single_line: true
 // rustfmt-struct_lit_width: 100
 // Struct literal multiline-style
 

tests/source/struct_lits_multiline.rs

@@ -1,6 +1,6 @@
 // rustfmt-normalize_comments: true
 // rustfmt-wrap_comments: true
-// rustfmt-struct_lit_multiline_style: ForceMulti
+// rustfmt-struct_lit_single_line: false
 
 // Struct literal expressions.
 

tests/source/struct_lits_visual_multiline.rs

@@ -1,7 +1,7 @@
 // rustfmt-normalize_comments: true
 // rustfmt-wrap_comments: true
 // rustfmt-indent_style: Visual
-// rustfmt-struct_lit_multiline_style: ForceMulti
+// rustfmt-struct_lit_single_line: false
 // rustfmt-error_on_line_overflow: false
 
 // Struct literal expressions.

tests/target/configs-struct_lit_single_line-false.rs

@@ -1,4 +1,4 @@
-// rustfmt-struct_lit_multiline_style: ForceMulti
+// rustfmt-struct_lit_single_line: false
 // Struct literal multiline-style
 
 fn main() {

tests/target/configs-struct_lit_single_line-true.rs

@@ -1,4 +1,4 @@
-// rustfmt-struct_lit_multiline_style: PreferSingle
+// rustfmt-struct_lit_single_line: true
 // rustfmt-struct_lit_width: 100
 // Struct literal multiline-style
 

tests/target/struct_lits_multiline.rs

@@ -1,6 +1,6 @@
 // rustfmt-normalize_comments: true
 // rustfmt-wrap_comments: true
-// rustfmt-struct_lit_multiline_style: ForceMulti
+// rustfmt-struct_lit_single_line: false
 
 // Struct literal expressions.
 

tests/target/struct_lits_visual_multiline.rs

@@ -1,7 +1,7 @@
 // rustfmt-normalize_comments: true
 // rustfmt-wrap_comments: true
 // rustfmt-indent_style: Visual
-// rustfmt-struct_lit_multiline_style: ForceMulti
+// rustfmt-struct_lit_single_line: false
 // rustfmt-error_on_line_overflow: false
 
 // Struct literal expressions.