Code generate Dart classes representing the analysis server API.

pkg/analysis_server/tool/spec/api.dart

 // Copyright (c) 2014, 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.
 
 /**
  * Data structures representing an API definition, and visitor base classes
  * for visiting those data structures.
  */
 library api;
 
@@ skipping 359 matching lines @@
 
   accept(ApiVisitor visitor) => visitor.visitTypeReference(this);
 }
 
 /**
  * Type which represents a union among multiple choices.
  */
 class TypeUnion extends TypeDecl {
   final List<TypeDecl> choices;
 
-  TypeUnion(this.choices, dom.Element html) : super(html);
+  /**
+   * The field that is used to disambiguate this union
+   */
+  final String field;
+
+  TypeUnion(this.choices, this.field, dom.Element html) : super(html);
 
   accept(ApiVisitor visitor) => visitor.visitTypeUnion(this);
 }
 
 /**
  * Type of a JSON object with specified fields, some of which may be optional.
  */
 class TypeObject extends TypeDecl {
   final List<TypeObjectField> fields;
 
   TypeObject(this.fields, dom.Element html) : super(html);
 
   accept(ApiVisitor visitor) => visitor.visitTypeObject(this);
+
+  /**
+   * Return the field with the given [name], or null if there is no such field.
+   */
+  TypeObjectField getField(String name) {
+    for (TypeObjectField field in fields) {
+      if (field.name == name) {
+        return field;
+      }
+    }
+    return null;
+  }
 }
 
 /**
  * Description of a single field in a [TypeObject].
  */
 class TypeObjectField extends ApiNode {
   final String name;
   final TypeDecl type;
   final bool optional;
 
@@ skipping 51 matching lines @@
 }
 
 /**
  * Description of a single allowed value for an enum.
  */
 class TypeEnumValue extends ApiNode {
   final String value;
 
   TypeEnumValue(this.value, dom.Element html) : super(html);
 }