Factor out TypeInheritanceClause utility function

Author: fwcd

Sources/SwiftSyntaxBuilderGeneration/SyntaxUtilities.swift

@@ -53,3 +53,11 @@ func createTokenSyntaxPatternBinding(_ pattern: ExpressibleAsPatternBuildable, a
                  initializer: nil,
                  accessor: accessor)
 }
+
+func createTypeInheritanceClause(conformances: [String]) -> TypeInheritanceClause? {
+  conformances.isEmpty ? nil : TypeInheritanceClause {
+    for conformance in conformances {
+      InheritedType(typeName: conformance)
+    }
+  }
+}

Sources/SwiftSyntaxBuilderGeneration/Templates/BuildableBaseProtocolsFile.swift

@@ -36,11 +36,7 @@ let buildableBaseProtocolsFile = SourceFile {
     ProtocolDecl(
       modifiers: [TokenSyntax.public],
       identifier: type.listBuildable,
-      inheritanceClause: listConformances.isEmpty ? nil : TypeInheritanceClause {
-        for conformance in listConformances {
-          InheritedType(typeName: conformance)
-        }
-      }
+      inheritanceClause: createTypeInheritanceClause(conformances: listConformances)
     ) {
       FunctionDecl(
         leadingTrivia: [
@@ -60,11 +56,7 @@ let buildableBaseProtocolsFile = SourceFile {
     ProtocolDecl(
       modifiers: [TokenSyntax.public],
       identifier: type.buildable,
-      inheritanceClause: buildableConformances.isEmpty ? nil : TypeInheritanceClause {
-        for conformance in buildableConformances {
-          InheritedType(typeName: conformance)
-        }
-      }
+      inheritanceClause: createTypeInheritanceClause(conformances: buildableConformances)
     ) {
       FunctionDecl(
         leadingTrivia: [

Sources/SwiftSyntaxBuilderGeneration/Templates/ExpressibleAsProtocolsFile.swift

@@ -40,11 +40,7 @@ let expressibleAsProtocolsFile = SourceFile {
     ProtocolDecl(
       modifiers: [TokenSyntax.public],
       identifier: type.expressibleAs,
-      inheritanceClause: declaredConformances.isEmpty ? nil : TypeInheritanceClause {
-        for conformance in declaredConformances {
-          InheritedType(typeName: conformance.expressibleAs)
-        }
-      }
+      inheritanceClause: createTypeInheritanceClause(conformances: declaredConformances.map(\.expressibleAs))
     ) {
       FunctionDecl(
         identifier: .identifier("create\(type.buildableBaseName)"),

Sources/SwiftSyntaxBuilderGeneration/Templates/TokenSyntaxFile.swift

@@ -25,11 +25,7 @@ let tokenSyntaxFile = SourceFile {
 
   ExtensionDecl(
     extendedType: "TokenSyntax",
-    inheritanceClause: TypeInheritanceClause {
-      for conformance in conformances {
-        InheritedType(typeName: conformance.expressibleAs)
-      }
-    }
+    inheritanceClause: createTypeInheritanceClause(conformances: conformances.map(\.expressibleAs))
   ) {
     for conformance in tokenType.elementInCollections {
       FunctionDecl(