internal: rename IndentLevel::single to zero

Author: A4-Tacks

crates/ide-assists/src/handlers/extract_struct_from_enum_variant.rs

@@ -290,7 +290,7 @@ fn create_struct_def(
             field_list.clone().into()
         }
     };
-    let field_list = field_list.indent(IndentLevel::single());
+    let field_list = field_list.indent(IndentLevel::zero());
 
     let strukt = make::struct_(enum_vis, name, generics, field_list).clone_for_update();
 

crates/ide-assists/src/utils.rs

@@ -324,7 +324,7 @@ pub fn add_trait_assoc_items_to_impl_with_factory(
                     ExprFillDefaultMode::Underscore => make.expr_underscore().into(),
                 };
                 let new_body = make.block_expr(None::<ast::Stmt>, Some(fill_expr));
-                let new_body = AstNodeEdit::indent(&new_body, IndentLevel::single());
+                let new_body = AstNodeEdit::indent(&new_body, IndentLevel::zero());
                 let mut fn_editor = SyntaxEditor::new(fn_.syntax().clone());
                 fn_.replace_or_insert_body(&mut fn_editor, new_body);
                 let new_fn_ = fn_editor.finish().new_root().clone();

crates/syntax/src/ast/edit.rs

@@ -50,7 +50,7 @@ impl ops::AddAssign<u8> for IndentLevel {
 }
 
 impl IndentLevel {
-    pub fn single() -> IndentLevel {
+    pub fn zero() -> IndentLevel {
         IndentLevel(0)
     }
     pub fn is_zero(&self) -> bool {

crates/syntax/src/ast/edit_in_place.rs

@@ -591,7 +591,7 @@ impl ast::AssocItemList {
                     normalize_ws_between_braces(self.syntax());
                     (IndentLevel::from_token(&l_curly) + 1, ted::Position::after(&l_curly), "\n")
                 }
-                None => (IndentLevel::single(), ted::Position::last_child_of(self.syntax()), "\n"),
+                None => (IndentLevel::zero(), ted::Position::last_child_of(self.syntax()), "\n"),
             },
         };
         let elements: Vec<SyntaxElement> = vec![

crates/syntax/src/syntax_editor/edits.rs

@@ -210,7 +210,7 @@ impl ast::AssocItemList {
                     normalize_ws_between_braces(editor, self.syntax());
                     (IndentLevel::from_token(&l_curly) + 1, Position::after(&l_curly), "\n")
                 }
-                None => (IndentLevel::single(), Position::last_child_of(self.syntax()), "\n"),
+                None => (IndentLevel::zero(), Position::last_child_of(self.syntax()), "\n"),
             },
         };
 
@@ -242,7 +242,7 @@ impl ast::VariantList {
                     normalize_ws_between_braces(editor, self.syntax());
                     (IndentLevel::from_token(&l_curly) + 1, Position::after(&l_curly))
                 }
-                None => (IndentLevel::single(), Position::last_child_of(self.syntax())),
+                None => (IndentLevel::zero(), Position::last_child_of(self.syntax())),
             },
         };
         let elements: Vec<SyntaxElement> = vec![