Add requestTime to responses

pkg/analyzer_plugin/tool/spec/codegen_dart_protocol.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.
 
 import 'dart:convert';
 
 import 'package:analyzer/src/codegen/tools.dart';
 import 'package:front_end/src/codegen/tools.dart';
 import 'package:html/dom.dart' as dom;
 import 'package:path/path.dart' as path;
@@ skipping 10 matching lines @@
  */
 const Map<String, String> specialElementFlags = const {
   'abstract': '0x01',
   'const': '0x02',
   'final': '0x04',
   'static': '0x08',
   'private': '0x10',
   'deprecated': '0x20'
 };
 
-final GeneratedFile target =
-    new GeneratedFile('lib/protocol/protocol_generated.dart', (String pkgPath) {
-  CodegenProtocolVisitor visitor =
-      new CodegenProtocolVisitor(path.basename(pkgPath), readApi(pkgPath));
-  return visitor.collectCode(visitor.visitApi);
-});
+GeneratedFile target(bool responseRequiresRequestTime) {
+  return new GeneratedFile('lib/protocol/protocol_generated.dart',
+      (String pkgPath) {
+    CodegenProtocolVisitor visitor = new CodegenProtocolVisitor(
+        path.basename(pkgPath), responseRequiresRequestTime, readApi(pkgPath));
+    return visitor.collectCode(visitor.visitApi);
+  });
+}
 
 /**
  * Callback type used to represent arbitrary code generation.
  */
 typedef void CodegenCallback();
 
 typedef String FromJsonSnippetCallback(String jsonPath, String json);
 
 typedef String ToJsonSnippetCallback(String value);
 
@@ skipping 19 matching lines @@
    */
   static const String disclaimer =
       'Clients may not extend, implement or mix-in this class.';
 
   /**
    * The name of the package into which code is being generated.
    */
   final String packageName;
 
   /**
+   * A flag indicating whether the class [Response] requires a `requestTime`
+   * parameter.
+   */
+  final bool responseRequiresRequestTime;
+
+  /**
    * Visitor used to produce doc comments.
    */
   final ToHtmlVisitor toHtmlVisitor;
 
   /**
    * Types implied by the API.  This includes types explicitly named in the
    * API as well as those implied by the definitions of requests, responses,
    * notifications, etc.
    */
   final Map<String, ImpliedType> impliedTypes;
 
-  CodegenProtocolVisitor(this.packageName, Api api)
+  CodegenProtocolVisitor(
+      this.packageName, this.responseRequiresRequestTime, Api api)
       : toHtmlVisitor = new ToHtmlVisitor(api),
         impliedTypes = computeImpliedTypes(api),
         super(api) {
     codeGeneratorSettings.commentLineLength = 79;
     codeGeneratorSettings.languageName = 'dart';
   }
 
   /**
    * Compute the code necessary to compare two objects for equality.
    */
@@ skipping 850 matching lines @@
     return false;
   }
 
   /**
    * Emit the toResponse() code for a class, if appropriate.  Returns true if
    * code was emitted.
    */
   bool emitToResponseMember(ImpliedType impliedType) {
     if (impliedType.kind == 'requestResult') {
       writeln('@override');
-      writeln('Response toResponse(String id) {');
+      if (responseRequiresRequestTime) {
+        writeln('Response toResponse(String id, int requestTime) {');
+      } else {
+        writeln('Response toResponse(String id) {');
+      }
       indent(() {
         String jsonPart = impliedType.type != null ? 'toJson()' : 'null';
-        writeln('return new Response(id, result: $jsonPart);');
+        if (responseRequiresRequestTime) {
+          writeln('return new Response(id, requestTime, result: $jsonPart);');
+        } else {
+          writeln('return new Response(id, result: $jsonPart);');
+        }
       });
       writeln('}');
       return true;
     }
     return false;
   }
 
   /**
    * Compute the code necessary to translate [type] from JSON.
    */
@@ skipping 328 matching lines @@
 
   @override
   String get asClosure => '($type value) => ${callback('value')}';
 
   @override
   bool get isIdentity => false;
 
   @override
   String asSnippet(String value) => callback(value);
 }