Analyze requested files.

pkg/analyzer/lib/src/dart/analysis/driver.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.
 
 import 'dart:async';
 import 'dart:collection';
 import 'dart:convert';
 
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/token.dart';
@@ skipping 210 matching lines @@
 
         // Verify all changed files one at a time.
         if (_changedFiles.isNotEmpty) {
           String path = _removeFirst(_changedFiles);
           _verifyApiSignatureOfChangedFile(path);
           // Repeat the processing loop.
           _hasWork.notify();
           continue;
         }
 
-        // TODO(scheglov) analyze requested files
+        // Analyze a requested file.
+        if (_requestedFiles.isNotEmpty) {
+          String path = _requestedFiles.keys.first;
+          AnalysisResult result = _computeAnalysisResult(path, withUnit: true);
+          _requestedFiles.remove(path).forEach((completer) {
+            completer.complete(result);
+          });
+          yield result;
+          // Repeat the processing loop.
+          _hasWork.notify();
+          continue;
+        }
 
         // Analyze a priority file.
         if (_priorityFiles.isNotEmpty) {
           bool analyzed = false;
           for (String path in _priorityFiles) {
             if (_filesToAnalyze.remove(path)) {
               AnalysisResult result =
                   _computeAnalysisResult(path, withUnit: true);
               yield result;
               break;
@@ skipping 859 matching lines @@
       }
     }
     for (UnlinkedExportPublic export in unit.publicNamespace.exports) {
       referenced.exported.add(export.uri);
     }
     return referenced;
   }
 
   _ReferencedUris._();
 }