Add '--dart-sdk-summary' option to analyzer-cli and use SummaryBasedDartSdk.

pkg/analyzer_cli/lib/src/driver.dart

 // Copyright (c) 2015, 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 analyzer_cli.src.driver;
 
 import 'dart:async';
 import 'dart:convert';
 import 'dart:io';
 
 import 'package:analyzer/file_system/file_system.dart' as fileSystem;
 import 'package:analyzer/file_system/physical_file_system.dart';
 import 'package:analyzer/plugin/embedded_resolver_provider.dart';
 import 'package:analyzer/plugin/options.dart';
 import 'package:analyzer/plugin/resolver_provider.dart';
 import 'package:analyzer/source/analysis_options_provider.dart';
 import 'package:analyzer/source/embedder.dart';
 import 'package:analyzer/source/package_map_provider.dart';
 import 'package:analyzer/source/package_map_resolver.dart';
 import 'package:analyzer/source/pub_package_map_provider.dart';
 import 'package:analyzer/source/sdk_ext.dart';
 import 'package:analyzer/src/generated/constant.dart';
 import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer/src/generated/error.dart';
 import 'package:analyzer/src/generated/interner.dart';
 import 'package:analyzer/src/generated/java_engine.dart';
 import 'package:analyzer/src/generated/java_io.dart';
+import 'package:analyzer/src/generated/sdk.dart';
 import 'package:analyzer/src/generated/sdk_io.dart';
 import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer/src/generated/source_io.dart';
 import 'package:analyzer/src/generated/utilities_general.dart'
     show PerformanceTag;
 import 'package:analyzer/src/services/lint.dart';
+import 'package:analyzer/src/summary/summary_sdk.dart' show SummaryBasedDartSdk;
 import 'package:analyzer/src/task/options.dart';
 import 'package:analyzer_cli/src/analyzer_impl.dart';
 import 'package:analyzer_cli/src/build_mode.dart';
 import 'package:analyzer_cli/src/error_formatter.dart';
 import 'package:analyzer_cli/src/options.dart';
 import 'package:analyzer_cli/src/perf_report.dart';
 import 'package:analyzer_cli/starter.dart';
 import 'package:linter/src/plugin/linter_plugin.dart';
 import 'package:package_config/discovery.dart' as pkgDiscovery;
 import 'package:package_config/packages.dart' show Packages;
@@ skipping 40 matching lines @@
   /// creation.
   CommandLineOptions _previousOptions;
 
   @override
   EmbeddedResolverProvider embeddedUriResolverProvider;
 
   @override
   ResolverProvider packageResolverProvider;
 
   /// SDK instance.
-  DirectoryBasedDartSdk sdk;
+  DartSdk sdk;
 
   /// Collected analysis statistics.
   final AnalysisStats stats = new AnalysisStats();
 
   /// This Driver's current analysis context.
   ///
   /// *Visible for testing.*
   AnalysisContext get context => _context;
 
   @override
@@ skipping 472 matching lines @@
       exitCode = errorSeverity.ordinal;
     }
     if (options.warningsAreFatal && errorSeverity == ErrorSeverity.WARNING) {
       exitCode = errorSeverity.ordinal;
     }
     return errorSeverity;
   }
 
   void _setupSdk(CommandLineOptions options) {
     if (sdk == null) {
-      String dartSdkPath = options.dartSdkPath;
-      sdk = new DirectoryBasedDartSdk(new JavaFile(dartSdkPath));
-      sdk.useSummary = options.sourceFiles.every((String sourcePath) {
-        sourcePath = path.absolute(sourcePath);
-        sourcePath = path.normalize(sourcePath);
-        return !path.isWithin(dartSdkPath, sourcePath);
-      });
-      sdk.analysisOptions = context.analysisOptions;
+      if (options.dartSdkSummaryPath != null) {
+        sdk = new SummaryBasedDartSdk(options.dartSdkSummaryPath);
+      } else {
+        String dartSdkPath = options.dartSdkPath;
+        DirectoryBasedDartSdk directorySdk =
+            new DirectoryBasedDartSdk(new JavaFile(dartSdkPath));
+        directorySdk.useSummary =
+            options.sourceFiles.every((String sourcePath) {
+          sourcePath = path.absolute(sourcePath);
+          sourcePath = path.normalize(sourcePath);
+          return !path.isWithin(dartSdkPath, sourcePath);
+        });
+        directorySdk.analysisOptions = context.analysisOptions;
+        sdk = directorySdk;
+      }
     }
   }
 
   static AnalysisOptionsImpl createAnalysisOptionsForCommandLineOptions(
       CommandLineOptions options) {
     AnalysisOptionsImpl contextOptions = new AnalysisOptionsImpl();
     contextOptions.hint = !options.disableHints;
     contextOptions.enableStrictCallChecks = options.enableStrictCallChecks;
     contextOptions.enableSuperMixins = options.enableSuperMixins;
     contextOptions.generateImplicitErrors = options.showPackageWarnings;
@@ skipping 178 matching lines @@
     for (var package in packages) {
       var packageName = path.basename(package.path);
       var realPath = package.resolveSymbolicLinksSync();
       result[packageName] = [
         PhysicalResourceProvider.INSTANCE.getFolder(realPath)
       ];
     }
     return result;
   }
 }