Fasta builders.

pkg/fasta/lib/src/builder/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.formal_parameter_builder;
+
+import 'package:dart_parser/src/parser.dart' show
+    FormalParameterType;
+
+import 'builder.dart' show
+    MetadataBuilder,
+    ModifierBuilder,
+    TypeBuilder;
+
+abstract class FormalParameterBuilder<T extends TypeBuilder>
+    extends ModifierBuilder {
+  final List<MetadataBuilder> metadata;
+
+  final int modifiers;
+
+  final T type;
+
+  final String name;
+
+  /// True if this parameter is on the form `this.name`.
+  final bool hasThis;
+
+  FormalParameterType kind = FormalParameterType.REQUIRED;
+
+  FormalParameterBuilder(this.metadata, this.modifiers, this.type, this.name,
+      this.hasThis);
+
+  bool get isRequired => kind.isRequired;
+
+  bool get isPositional => kind.isPositional;
+
+  bool get isNamed => kind.isNamed;
+
+  bool get isOptional => !isRequired;
+
+  bool get isLocal => true;
+}