Decode RefactoringFeedback automatically.

pkg/analysis_server/lib/src/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.
 
 library protocol;
 
 import 'dart:collection';
 import 'dart:convert';
 
 import 'package:analysis_server/src/computer/element.dart' show
     elementFromEngine;
 import 'package:analysis_server/src/search/search_result.dart' show
     searchResultFromMatch;
 import 'package:analysis_server/src/services/correction/fix.dart' show Fix;
 import 'package:analysis_server/src/services/json.dart';
 import 'package:analysis_server/src/services/search/search_engine.dart' as
     engine;
 import 'package:analyzer/src/generated/ast.dart' as engine;
 import 'package:analyzer/src/generated/element.dart' as engine;
 import 'package:analyzer/src/generated/engine.dart' as engine;
 import 'package:analyzer/src/generated/error.dart' as engine;
 import 'package:analyzer/src/generated/source.dart' as engine;
 
 part 'generated_protocol.dart';
 
+
+final Map<String, RefactoringKind> REQUEST_ID_REFACTORING_KINDS =
+    new HashMap<String, RefactoringKind>();
+
 /**
  * Translate the input [map], applying [keyCallback] to all its keys, and
  * [valueCallback] to all its values.
  */
 mapMap(Map map, {dynamic keyCallback(key), dynamic valueCallback(value)}) {
   Map result = {};
   map.forEach((key, value) {
     if (keyCallback != null) {
       key = keyCallback(key);
     }
@@ skipping 353 matching lines @@
  * Create an OverriddenMember based on an element from the analyzer engine.
  */
 OverriddenMember _overriddenMemberFromEngine(engine.Element member) {
   Element element = elementFromEngine(member);
   String className = member.enclosingElement.displayName;
   return new OverriddenMember(element, className);
 }
 
 
 /**
+ * Create a [RefactoringFeedback] corresponding the given [kind].
+ */
+RefactoringFeedback _refactoringFeedbackFromJson(JsonDecoder jsonDecoder,
+    String jsonPath, Object json, Map feedbackJson) {
+  String requestId;
+  if (jsonDecoder is ResponseDecoder) {
+    requestId = jsonDecoder.response.id;
+  }
+  RefactoringKind kind = REQUEST_ID_REFACTORING_KINDS[requestId];
+  if (kind == RefactoringKind.EXTRACT_LOCAL_VARIABLE) {
+    return new ExtractLocalVariableFeedback.fromJson(jsonDecoder, jsonPath, json);
+  }
+  if (kind == RefactoringKind.EXTRACT_METHOD) {
+    return new ExtractMethodFeedback.fromJson(jsonDecoder, jsonPath, json);
+  }
+  if (kind == RefactoringKind.RENAME) {
+    return new RenameFeedback.fromJson(jsonDecoder, jsonPath, json);
+  }
+  return null;
+}
+
+
+/**
  * Create a [RefactoringOptions] corresponding the given [kind].
  */
 RefactoringOptions _refactoringOptionsFromJson(JsonDecoder jsonDecoder,
     String jsonPath, Object json, RefactoringKind kind) {
   if (kind == RefactoringKind.EXTRACT_LOCAL_VARIABLE) {
     return new ExtractLocalVariableOptions.fromJson(jsonDecoder, jsonPath, json);
   }
   if (kind == RefactoringKind.EXTRACT_METHOD) {
     return new ExtractMethodOptions.fromJson(jsonDecoder, jsonPath, json);
   }
@@ skipping 440 matching lines @@
    */
   factory Response.fromJson(Map<String, Object> json) {
     try {
       Object id = json[Response.ID];
       if (id is! String) {
         return null;
       }
       Object error = json[Response.ERROR];
       RequestError decodedError;
       if (error is Map) {
-        decodedError = new RequestError.fromJson(new ResponseDecoder(),
+        decodedError = new RequestError.fromJson(new ResponseDecoder(null),
             '.error', error);
       }
       Object result = json[Response.RESULT];
       Map<String, Object> decodedResult;
       if (result is Map) {
         decodedResult = result;
       }
       return new Response(id, error: decodedError,
           result: decodedResult);
     } catch (exception) {
@@ skipping 62 matching lines @@
     }
     return jsonObject;
   }
 }
 
 /**
  * JsonDecoder for decoding responses from the server.  This is intended to be
  * used only for testing.  Errors are reported using bare [Exception] objects.
  */
 class ResponseDecoder extends JsonDecoder {
+  final Response response;
+
+  ResponseDecoder(this.response);
+
   @override
   dynamic mismatch(String jsonPath, String expected) {
     return new Exception('Expected $expected at $jsonPath');
   }
 
   @override
   dynamic missingKey(String jsonPath, String key) {
     return new Exception('Missing key $key at $jsonPath');
   }
 }
@@ skipping 15 matching lines @@
     hash = 0x1fffffff & (hash + ((0x03ffffff & hash) << 3));
     hash = hash ^ (hash >> 11);
     return 0x1fffffff & (hash + ((0x00003fff & hash) << 15));
   }
 
   static int hash2(a, b) => finish(combine(combine(0, a), b));
 
   static int hash4(a, b, c, d) =>
       finish(combine(combine(combine(combine(0, a), b), c), d));
 }