Fasta kernel builders.

pkg/fasta/lib/src/kernel/kernel_formal_parameter_builder.dart

+// Copyright (c) 2016, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+library fasta.kernel_formal_parameter_builder;
+
+import 'package:kernel/ast.dart' show
+    DynamicType,
+    VariableDeclaration;
+
+import 'kernel_builder.dart' show
+    FormalParameterBuilder,
+    KernelTypeBuilder,
+    MetadataBuilder;
+
+class KernelFormalParameterBuilder
+    extends FormalParameterBuilder<KernelTypeBuilder> {
+  VariableDeclaration declaration;
+
+  KernelFormalParameterBuilder(List<MetadataBuilder> metadata,
+      int modifiers, KernelTypeBuilder type, String name,
+      bool hasThis)
+      : super (metadata, modifiers, type, name, hasThis);
+
+  VariableDeclaration build() {
+    return declaration ??= new VariableDeclaration(
+        name, type: type?.build() ?? const DynamicType(), isFinal: isFinal,
+        isConst: isConst);
+  }
+
+  VariableDeclaration get target => declaration;
+}