Generate TokenSyntax with SwiftSyntaxBuilderGeneration

Package.swift

@@ -82,7 +82,6 @@ let package = Package(
         "BuildableCollectionNodes.swift.gyb",
         "BuildableNodes.swift.gyb",
         "ResultBuilders.swift.gyb",
-        "TokenSyntax.swift.gyb",
       ]
     ),
     .target(

Sources/SwiftSyntaxBuilder/gyb_generated/TokenSyntax.swift → Sources/SwiftSyntaxBuilder/generated/TokenSyntax.swift

@@ -1,4 +1,5 @@
-//// Automatically Generated From TokenSyntax.swift.gyb.
+
+//// Automatically Generated by SwiftSyntaxBuilderGeneration
 //// Do Not Edit Directly!
 //===----------------------------------------------------------------------===//
 //
@@ -13,38 +14,35 @@
 //===----------------------------------------------------------------------===//
 
 import SwiftSyntax
-
-
-extension TokenSyntax: ExpressibleAsTokenList, ExpressibleAsNonEmptyTokenList, ExpressibleAsBinaryOperatorExpr, ExpressibleAsDeclModifier, ExpressibleAsIdentifierExpr {
-  /// Conformance to `ExpressibleAsTokenList`.
-  public func createTokenList() -> TokenList {
+extension TokenSyntax: ExpressibleAsTokenList, ExpressibleAsNonEmptyTokenList, ExpressibleAsBinaryOperatorExpr, ExpressibleAsDeclModifier, ExpressibleAsIdentifierExpr{
+  /// Conformance to ExpressibleAsTokenList
+public func createTokenList()-> TokenList{
     return TokenList([self])
   }
-  /// Conformance to `ExpressibleAsNonEmptyTokenList`.
-  public func createNonEmptyTokenList() -> NonEmptyTokenList {
+  /// Conformance to ExpressibleAsNonEmptyTokenList
+public func createNonEmptyTokenList()-> NonEmptyTokenList{
     return NonEmptyTokenList([self])
   }
-  /// Conformance to `ExpressibleAsBinaryOperatorExpr`.
-  public func createBinaryOperatorExpr() -> BinaryOperatorExpr {
+  /// Conformance to ExpressibleAsBinaryOperatorExpr
+public func createBinaryOperatorExpr()-> BinaryOperatorExpr{
     return BinaryOperatorExpr(operatorToken: self)
   }
-  /// Conformance to `ExpressibleAsDeclModifier`.
-  public func createDeclModifier() -> DeclModifier {
+  /// Conformance to ExpressibleAsDeclModifier
+public func createDeclModifier()-> DeclModifier{
     return DeclModifier(name: self)
   }
-  /// Conformance to `ExpressibleAsIdentifierExpr`.
-  public func createIdentifierExpr() -> IdentifierExpr {
+  /// Conformance to ExpressibleAsIdentifierExpr
+public func createIdentifierExpr()-> IdentifierExpr{
     return IdentifierExpr(identifier: self)
   }
 }
 
-/// `TokenSyntax` conforms to `SyntaxBuildable` and `ExprBuildable` via different paths, so we need to pick one default conversion path to create an an `ExprSyntax` (and `Syntax`) from a `String`. We choose `IdentifierExpr`.
-extension TokenSyntax {
-  public func createSyntaxBuildable() -> SyntaxBuildable {
+/// `TokenSyntax` conforms to `SyntaxBuildable` and `ExprBuildable` via different paths, so we need to pick one default conversion path to create an `ExprSyntax` (and `Syntax`) from a `String`. We choose `IdentifierExpr`.
+extension TokenSyntax{
+  public func createSyntaxBuildable()-> SyntaxBuildable{
     return createIdentifierExpr()
   }
-
-  public func createExprBuildable() -> ExprBuildable {
+  public func createExprBuildable()-> ExprBuildable{
     return createIdentifierExpr()
   }
-}
+}

Sources/SwiftSyntaxBuilderGeneration/Templates/TokenSyntaxFile.swift

@@ -0,0 +1,86 @@
+//===----------------------------------------------------------------------===//
+//
+// This source file is part of the Swift.org open source project
+//
+// Copyright (c) 2014 - 2022 Apple Inc. and the Swift project authors
+// Licensed under Apache License v2.0 with Runtime Library Exception
+//
+// See https://swift.org/LICENSE.txt for license information
+// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
+//
+//===----------------------------------------------------------------------===//
+
+import Foundation
+import SwiftSyntax
+import SwiftSyntaxBuilder
+
+let tokenSyntaxFile = SourceFile {
+  ImportDecl(
+    leadingTrivia: .docLineComment(copyrightHeader),
+    path: "SwiftSyntax"
+  )
+
+  let tokenType = SyntaxBuildableType(syntaxKind: "Token")
+  let conformances = tokenType.generatedExpressibleAsConformances
+
+  ExtensionDecl(
+    extendedType: "TokenSyntax",
+    inheritanceClause: TypeInheritanceClause {
+      for conformance in conformances {
+        InheritedType(typeName: conformance.expressibleAs)
+      }
+    }
+  ) {
+    for conformance in tokenType.elementInCollections {
+      FunctionDecl(
+        leadingTrivia: .docLineComment("/// Conformance to \(conformance.expressibleAs)") + .newline,
+        modifiers: [TokenSyntax.public],
+        identifier: .identifier("create\(conformance.buildableBaseName)"),
+        signature: FunctionSignature(
+          input: ParameterClause(),
+          output: conformance.buildable
+        )
+      ) {
+        ReturnStmt(expression: FunctionCallExpr(conformance.buildable) {
+          TupleExprElement(expression: ArrayExpr {
+            ArrayElement(expression: "self")
+          })
+        })
+      }
+    }
+    for conformance in tokenType.convertibleToTypes {
+      let param = Node.from(type: conformance).singleNonDefaultedChild
+      FunctionDecl(
+        leadingTrivia: .docLineComment("/// Conformance to \(conformance.expressibleAs)") + .newline,
+        modifiers: [TokenSyntax.public],
+        identifier: .identifier("create\(conformance.buildableBaseName)"),
+        signature: FunctionSignature(
+          input: ParameterClause(),
+          output: conformance.buildable
+        )
+      ) {
+        ReturnStmt(expression: FunctionCallExpr(conformance.buildable) {
+          TupleExprElement(label: param.swiftName, expression: "self")
+        })
+      }
+    }
+  }
+
+  ExtensionDecl(
+    leadingTrivia: .newline + .docLineComment("/// `TokenSyntax` conforms to `SyntaxBuildable` and `ExprBuildable` via different paths, so we need to pick one default conversion path to create an `ExprSyntax` (and `Syntax`) from a `String`. We choose `IdentifierExpr`.") + .newline,
+    extendedType: "TokenSyntax"
+  ) {
+    for buildable in ["SyntaxBuildable", "ExprBuildable"] {
+      FunctionDecl(
+        modifiers: [TokenSyntax.public],
+        identifier: .identifier("create\(buildable)"),
+        signature: FunctionSignature(
+          input: ParameterClause(),
+          output: buildable
+        )
+      ) {
+        ReturnStmt(expression: FunctionCallExpr("createIdentifierExpr"))
+      }
+    }
+  }
+}

Sources/SwiftSyntaxBuilderGeneration/main.swift

@@ -17,6 +17,7 @@ import SwiftSyntaxBuilder
 /// SwiftSyntaxBuilder sources to be generated
 let sourceTemplates = [
   (tokensFile, "Tokens.swift"),
+  (tokenSyntaxFile, "TokenSyntax.swift"),
 ]
 
 guard CommandLine.arguments.count > 1 else {