Allow input summaries to be specified when running analyzer_cli in non-build mode.

pkg/analyzer_cli/lib/src/driver.dart

Index: pkg/analyzer_cli/lib/src/driver.dart
diff --git a/pkg/analyzer_cli/lib/src/driver.dart b/pkg/analyzer_cli/lib/src/driver.dart
index b16b78780bdbc9b1e9cbaba98615834fd4fcbde4..2593aef1c77783cc7f187ff5371d7c7d1ef9f153 100644
--- a/pkg/analyzer_cli/lib/src/driver.dart
+++ b/pkg/analyzer_cli/lib/src/driver.dart
@@ -32,6 +32,7 @@ import 'package:analyzer/src/generated/utilities_general.dart'
     show PerformanceTag;
 import 'package:analyzer/src/services/lint.dart';
 import 'package:analyzer/src/source/source_resource.dart';
+import 'package:analyzer/src/summary/package_bundle_reader.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';
@@ -78,7 +79,7 @@ class Driver implements CommandLineStarter {
 
   /// The context that was most recently created by a call to [_analyzeAll], or
   /// `null` if [_analyzeAll] hasn't been called yet.
-  AnalysisContext _context;
+  InternalAnalysisContext _context;
 
   /// The total number of source files loaded by an AnalysisContext.
   int _analyzedFileCount = 0;
@@ -314,6 +315,10 @@ class Driver implements CommandLineStarter {
     if (options.incrementalCachePath != _previousOptions.incrementalCachePath) {
       return false;
     }
+    if (!_equalLists(
+        options.buildSummaryInputs, _previousOptions.buildSummaryInputs)) {
+      return false;
+    }
     return true;
   }
 
@@ -347,8 +352,11 @@ class Driver implements CommandLineStarter {
   /// Decide on the appropriate method for resolving URIs based on the given
   /// [options] and [customUrlMappings] settings, and return a
   /// [SourceFactory] that has been configured accordingly.
-  SourceFactory _chooseUriResolutionPolicy(CommandLineOptions options,
-      Map<file_system.Folder, YamlMap> embedderMap, _PackageInfo packageInfo) {
+  SourceFactory _chooseUriResolutionPolicy(
+      CommandLineOptions options,
+      Map<file_system.Folder, YamlMap> embedderMap,
+      _PackageInfo packageInfo,
+      SummaryDataStore summaryDataStore) {
     // Create a custom package resolver if one has been specified.
     if (packageResolverProvider != null) {
       file_system.Folder folder = resourceProvider.getResource('.');
@@ -359,6 +367,7 @@ class Driver implements CommandLineStarter {
         // TODO(brianwilkerson) This doesn't handle sdk extensions.
         List<UriResolver> resolvers = <UriResolver>[
           sdkResolver,
+          new InSummaryUriResolver(resourceProvider, summaryDataStore),
           resolver,
           new file_system.ResourceUriResolver(resourceProvider)
         ];
@@ -417,6 +426,9 @@ class Driver implements CommandLineStarter {
       resolvers.add(new SdkExtUriResolver(packageInfo.packageMap));
     }
 
+    // Then package URIs from summaries.
+    resolvers.add(new InSummaryUriResolver(resourceProvider, summaryDataStore));
+
     // Then package URIs.
     if (packageUriResolver != null) {
       resolvers.add(packageUriResolver);
@@ -505,15 +517,26 @@ class Driver implements CommandLineStarter {
     // No summaries in the presence of embedders or extenders.
     bool useSummaries = embedderMap.isEmpty && !hasSdkExt;
 
+    if (!useSummaries && options.buildSummaryInputs.isNotEmpty) {
+      throw new _DriverError(
+          'Summaries are not supported in this configuration');

[Brian Wilkerson, 2016/09/16 19:27:30]

Could we be more specific? Maybe something like

Summaries are not yet supported when using Flutter.

which, AFAIK, is the only time we'll have either an embedder file or an SDK
extension.

[Paul Berry, 2016/09/16 21:50:14]

Done.

+    }
+
+    // Read any input summaries.
+    SummaryDataStore summaryDataStore = new SummaryDataStore(
+        useSummaries ? options.buildSummaryInputs : <String>[]);
+
     // Once options and embedders are processed, setup the SDK.
     _setupSdk(options, useSummaries);
 
     // Choose a package resolution policy and a diet parsing policy based on
     // the command-line options.
-    SourceFactory sourceFactory =
-        _chooseUriResolutionPolicy(options, embedderMap, packageInfo);
+    SourceFactory sourceFactory = _chooseUriResolutionPolicy(
+        options, embedderMap, packageInfo, summaryDataStore);
 
     _context.sourceFactory = sourceFactory;
+    _context.resultProvider =
+        new InputPackagesResultProvider(_context, summaryDataStore);
 
     incrementalSession = configureIncrementalAnalysis(options, context);
   }
@@ -693,6 +716,19 @@ class Driver implements CommandLineStarter {
     _processAnalysisOptions(resourceProvider, context, options);
   }
 
+  /// Perform a deep comparison of two string lists.
+  static bool _equalLists(List<String> l1, List<String> l2) {
+    if (l1.length != l2.length) {
+      return false;
+    }
+    for (int i = 0; i < l1.length; i++) {
+      if (l1[i] != l2[i]) {
+        return false;
+      }
+    }
+    return true;
+  }
+
   /// Perform a deep comparison of two string maps.
   static bool _equalMaps(Map<String, String> m1, Map<String, String> m2) {
     if (m1.length != m2.length) {