| // 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 search.domain; |
| |
| import 'dart:async'; |
| |
| import 'package:analysis_server/src/analysis_server.dart'; |
| import 'package:analysis_server/src/computer/element.dart' as se; |
| import 'package:analysis_server/src/constants.dart'; |
| import 'package:analysis_server/src/protocol.dart'; |
| import 'package:analysis_server/src/search/element_references.dart'; |
| import 'package:analysis_server/src/search/search_result.dart'; |
| import 'package:analysis_server/src/search/type_hierarchy.dart'; |
| import 'package:analysis_services/constants.dart'; |
| import 'package:analysis_services/json.dart'; |
| import 'package:analysis_services/search/search_engine.dart'; |
| import 'package:analyzer/src/generated/element.dart'; |
| |
| /** |
| * Instances of the class [SearchDomainHandler] implement a [RequestHandler] |
| * that handles requests in the search domain. |
| */ |
| class SearchDomainHandler implements RequestHandler { |
| /** |
| * The analysis server that is using this handler to process requests. |
| */ |
| final AnalysisServer server; |
| |
| /** |
| * The [SearchEngine] for this server. |
| */ |
| SearchEngine searchEngine; |
| |
| /** |
| * The next searc response id. |
| */ |
| int _nextSearchId = 0; |
| |
| /** |
| * Initialize a newly created handler to handle requests for the given [server]. |
| */ |
| SearchDomainHandler(this.server) { |
| searchEngine = server.searchEngine; |
| } |
| |
| Response findElementReferences(Request request) { |
| String file = request.getRequiredParameter(FILE).asString(); |
| int offset = request.getRequiredParameter(OFFSET).asInt(); |
| bool includePotential = |
| request.getRequiredParameter(INCLUDE_POTENTIAL).asBool(); |
| // prepare elements |
| List<Element> elements = server.getElementsAtOffset(file, offset); |
| elements = elements.map((Element element) { |
| if (element is FieldFormalParameterElement) { |
| return element.field; |
| } |
| if (element is PropertyAccessorElement) { |
| return element.variable; |
| } |
| return element; |
| }).toList(); |
| // schedule search |
| String searchId = (_nextSearchId++).toString(); |
| elements.forEach((Element element) { |
| var computer = new ElementReferencesComputer(searchEngine); |
| var future = computer.compute(element, includePotential); |
| future.then((List<SearchResult> results) { |
| bool isLast = identical(element, elements.last); |
| _sendSearchNotification(searchId, isLast, results); |
| }); |
| }); |
| if (elements.isEmpty) { |
| new Future.microtask(() { |
| _sendSearchNotification(searchId, true, []); |
| }); |
| } |
| // respond |
| Response response = new Response(request.id); |
| response.setResult(ID, searchId); |
| if (elements.isNotEmpty) { |
| var serverElement = new se.Element.fromEngine(elements[0]); |
| response.setResult(ELEMENT, serverElement); |
| } |
| return response; |
| } |
| |
| Response findMemberDeclarations(Request request) { |
| String name = request.getRequiredParameter(NAME).asString(); |
| // schedule search |
| String searchId = (_nextSearchId++).toString(); |
| { |
| var matchesFuture = searchEngine.searchMemberDeclarations(name); |
| matchesFuture.then((List<SearchMatch> matches) { |
| _sendSearchNotification(searchId, true, matches.map(toResult)); |
| }); |
| } |
| // respond |
| return new Response(request.id)..setResult(ID, searchId); |
| } |
| |
| Response findMemberReferences(Request request) { |
| String name = request.getRequiredParameter(NAME).asString(); |
| // schedule search |
| String searchId = (_nextSearchId++).toString(); |
| { |
| var matchesFuture = searchEngine.searchMemberReferences(name); |
| matchesFuture.then((List<SearchMatch> matches) { |
| _sendSearchNotification(searchId, true, matches.map(toResult)); |
| }); |
| } |
| // respond |
| return new Response(request.id)..setResult(ID, searchId); |
| } |
| |
| Response findTopLevelDeclarations(Request request) { |
| String pattern = request.getRequiredParameter(PATTERN).asString(); |
| // schedule search |
| String searchId = (_nextSearchId++).toString(); |
| { |
| var matchesFuture = searchEngine.searchTopLevelDeclarations(pattern); |
| matchesFuture.then((List<SearchMatch> matches) { |
| _sendSearchNotification(searchId, true, matches.map(toResult)); |
| }); |
| } |
| // respond |
| return new Response(request.id)..setResult(ID, searchId); |
| } |
| |
| /** |
| * Implement the `search.getTypeHierarchy` request. |
| */ |
| Response getTypeHierarchy(Request request) { |
| // prepare parameters |
| String file = request.getRequiredParameter(FILE).asString(); |
| int offset = request.getRequiredParameter(OFFSET).asInt(); |
| // prepare Element |
| List<Element> elements = server.getElementsAtOffset(file, offset); |
| Response response = new Response(request.id); |
| if (elements.isEmpty) { |
| response.setEmptyResult(); |
| return response; |
| } |
| Element element = elements.first; |
| // prepare type hierarchy |
| TypeHierarchyComputer computer = new TypeHierarchyComputer(searchEngine); |
| computer.compute(element).then((List<TypeHierarchyItem> items) { |
| if (items != null) { |
| response.setResult(HIERARCHY_ITEMS, objectToJson(items)); |
| } else { |
| response.setEmptyResult(); |
| } |
| server.sendResponse(response); |
| }); |
| // delay response |
| return Response.DELAYED_RESPONSE; |
| } |
| |
| @override |
| Response handleRequest(Request request) { |
| try { |
| String requestName = request.method; |
| if (requestName == SEARCH_FIND_ELEMENT_REFERENCES) { |
| return findElementReferences(request); |
| } else if (requestName == SEARCH_FIND_MEMBER_DECLARATIONS) { |
| return findMemberDeclarations(request); |
| } else if (requestName == SEARCH_FIND_MEMBER_REFERENCES) { |
| return findMemberReferences(request); |
| } else if (requestName == SEARCH_FIND_TOP_LEVEL_DECLARATIONS) { |
| return findTopLevelDeclarations(request); |
| } else if (requestName == SEARCH_GET_TYPE_HIERARCHY) { |
| return getTypeHierarchy(request); |
| } |
| } on RequestFailure catch (exception) { |
| return exception.response; |
| } |
| return null; |
| } |
| |
| void _sendSearchNotification(String searchId, bool isLast, |
| Iterable<SearchResult> results) { |
| Notification notification = new Notification(SEARCH_RESULTS); |
| notification.setParameter(ID, searchId); |
| notification.setParameter(LAST, isLast); |
| notification.setParameter(RESULTS, results); |
| server.sendNotification(notification); |
| } |
| |
| static SearchResult toResult(SearchMatch match) { |
| return new SearchResult.fromMatch(match); |
| } |
| } |