Generate spec.sum and strong.sum summaties for SDK.

pkg/analyzer/tool/summary/build_sdk_summaries.dart

Index: pkg/analyzer/tool/summary/build_sdk_summaries.dart
diff --git a/pkg/analyzer/tool/summary/build_sdk_summary.dart b/pkg/analyzer/tool/summary/build_sdk_summaries.dart
similarity index 64%
rename from pkg/analyzer/tool/summary/build_sdk_summary.dart
rename to pkg/analyzer/tool/summary/build_sdk_summaries.dart
index 624db692893b2ed01977e64442985195e2c3be92..2e680da75498f4f4d0462e3769b5c43795da1a08 100644
--- a/pkg/analyzer/tool/summary/build_sdk_summary.dart
+++ b/pkg/analyzer/tool/summary/build_sdk_summaries.dart
@@ -8,6 +8,7 @@ import 'package:analyzer/src/generated/sdk_io.dart';
 import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer/src/summary/format.dart';
 import 'package:analyzer/src/summary/summarize_elements.dart';
+import 'package:path/path.dart';
 
 main(List<String> args) {
   if (args.length < 1 || args.length > 2) {
@@ -18,9 +19,9 @@ main(List<String> args) {
   //
   // Prepare output file path.
   //
-  String outputFilePath = args[0];
-  if (FileSystemEntity.isDirectorySync(outputFilePath)) {
-    print("'$outputFilePath' is a directory.");
+  String outputDirectoryPath = args[0];
+  if (!FileSystemEntity.isDirectorySync(outputDirectoryPath)) {
+    print("'$outputDirectoryPath' is not a directory.");
     _printUsage();
     exitCode = 1;
     return;
@@ -41,10 +42,30 @@ main(List<String> args) {
     sdkPath = DirectoryBasedDartSdk.defaultSdkDirectory.getAbsolutePath();
   }
   //
+  // Build spec and strong summaries.
+  //
+  _buildSummary(sdkPath, outputDirectoryPath, false);
+  _buildSummary(sdkPath, outputDirectoryPath, true);
+}
+
+/**
+ * The name of the SDK summaries builder application.
+ */
+const BINARY_NAME = "build_sdk_summaries";
+
+/**
+ * Build a strong or spec mode summary for the Dart SDK at [sdkPath].
+ */
+void _buildSummary(
+    String sdkPath, String outputDirectoryPath, bool strongMode) {
+  print('Generating ${strongMode ? 'strong' : 'spec'} mode summary.');
+  Stopwatch sw = new Stopwatch()..start();
+  //
   // Prepare SDK.
   //
   DirectoryBasedDartSdk sdk = new DirectoryBasedDartSdk(new JavaFile(sdkPath));
   AnalysisContext context = sdk.context;
+  context.analysisOptions = new AnalysisOptionsImpl()..strongMode = strongMode;
   //
   // Serialize each SDK library.
   //
@@ -53,13 +74,11 @@ main(List<String> args) {
   List<String> unlinkedUnitUris = <String>[];
   List<UnlinkedUnitBuilder> unlinkedUnits = <UnlinkedUnitBuilder>[];
   for (SdkLibrary lib in sdk.sdkLibraries) {
-    print('Resolving and serializing: ${lib.shortName}');
     Source librarySource = sdk.mapDartUri(lib.shortName);
     LibraryElement libraryElement =
         context.computeLibraryElement(librarySource);
-    // TODO(paulberry): also build a summary of the SDK in strong mode.
     LibrarySerializationResult libraryResult =
-        serializeLibrary(libraryElement, context.typeProvider, false);
+        serializeLibrary(libraryElement, context.typeProvider, strongMode);
     linkedLibraryUris.add(lib.shortName);
     linkedLibraries.add(libraryResult.linked);
     unlinkedUnitUris.addAll(libraryResult.unitUris);
@@ -73,18 +92,20 @@ main(List<String> args) {
       linkedLibraries: linkedLibraries,
       unlinkedUnitUris: unlinkedUnitUris,
       unlinkedUnits: unlinkedUnits);
+  String outputFilePath =
+      join(outputDirectoryPath, strongMode ? 'strong.sum' : 'spec.sum');
   File file = new File(outputFilePath);
   file.writeAsBytesSync(sdkBundle.toBuffer(), mode: FileMode.WRITE_ONLY);
+  //
+  // Done.
+  //
+  print('\tDone in ${sw.elapsedMilliseconds} ms.');
 }
 
 /**
- * The name of the SDK summary builder application.
- */
-const BINARY_NAME = "build_sdk_summary";
-
-/**
- * Print information about how to use the SDK summary builder.
+ * Print information about how to use the SDK summaries builder.
  */
 void _printUsage() {
-  print('Usage: $BINARY_NAME output_file_path [sdk_path]');
+  print('Usage: $BINARY_NAME output_directory_path [sdk_path]');
+  print('Build files spec.sum and strong.sum in the output directory.');
 }