Formatting

Author: DougGregor

Sources/_SwiftSyntaxMacros/FreestandingDeclarationMacro.swift

@@ -16,6 +16,7 @@ public protocol FreestandingDeclarationMacro: DeclarationMacro {
   /// Expand a macro described by the given freestanding macro expansion
   /// declaration within the given context to produce a set of declarations.
   static func expansion(
-    of node: MacroExpansionDeclSyntax, in context: inout MacroExpansionContext
+    of node: MacroExpansionDeclSyntax,
+    in context: inout MacroExpansionContext
   ) throws -> [DeclSyntax]
 }

Sources/_SwiftSyntaxMacros/MacroSystem.swift

@@ -89,17 +89,21 @@ class MacroApplication: SyntaxRewriter {
       // Expand declaration macros that were parsed as macro expansion
       // expressions in this context.
       if case let .expr(exprItem) = item.item,
-         let exprExpansion = exprItem.as(MacroExpansionExprSyntax.self),
-         let macro = macroSystem.macros[exprExpansion.macro.text],
-         let freestandingMacro = macro as? FreestandingDeclarationMacro.Type {
+        let exprExpansion = exprItem.as(MacroExpansionExprSyntax.self),
+        let macro = macroSystem.macros[exprExpansion.macro.text],
+        let freestandingMacro = macro as? FreestandingDeclarationMacro.Type
+      {
         do {
           let expandedDecls = try freestandingMacro.expansion(
-            of: exprExpansion.asMacroExpansionDecl(), in: &context
+            of: exprExpansion.asMacroExpansionDecl(),
+            in: &context
           )
 
-          newItems.append(contentsOf: expandedDecls.map { decl in
-            CodeBlockItemSyntax(item: .decl(decl))
-          })
+          newItems.append(
+            contentsOf: expandedDecls.map { decl in
+              CodeBlockItemSyntax(item: .decl(decl))
+            }
+          )
         } catch {
           // Record the error
           context.diagnose(
@@ -124,20 +128,24 @@ class MacroApplication: SyntaxRewriter {
   override func visit(_ node: MemberDeclListSyntax) -> MemberDeclListSyntax {
     var newItems: [MemberDeclListItemSyntax] = []
     for item in node {
-        // Expand declaration macros, which produce zero or more declarations.
+      // Expand declaration macros, which produce zero or more declarations.
       if let declExpansion = item.decl.as(MacroExpansionDeclSyntax.self),
-         let macro = macroSystem.macros[declExpansion.macro.text],
-         let freestandingMacro = macro as? FreestandingDeclarationMacro.Type {
+        let macro = macroSystem.macros[declExpansion.macro.text],
+        let freestandingMacro = macro as? FreestandingDeclarationMacro.Type
+      {
         do {
           let expandedDecls = try freestandingMacro.expansion(
-            of: declExpansion, in: &context
+            of: declExpansion,
+            in: &context
           )
 
-          newItems.append(contentsOf: expandedDecls.map { decl in
-            MemberDeclListItemSyntax(decl: decl)
-          })
+          newItems.append(
+            contentsOf: expandedDecls.map { decl in
+              MemberDeclListItemSyntax(decl: decl)
+            }
+          )
         } catch {
-            // Record the error
+          // Record the error
           context.diagnose(
             Diagnostic(
               node: Syntax(node),

Tests/SwiftSyntaxMacrosTest/MacroSystemTests.swift

@@ -195,7 +195,8 @@ struct DefineBitwidthNumberedStructsMacro: FreestandingDeclarationMacro {
       case let .stringSegment(prefix) = stringLiteral.segments[0]
     else {
       throw CustomError.message(
-        "#bitwidthNumberedStructs macro requires a string literal")
+        "#bitwidthNumberedStructs macro requires a string literal"
+      )
     }
 
     return [8, 16, 32, 64].map { bitwidth in