A Dart script for building SDK summary.

pkg/analyzer/tool/summary/build_sdk_summary.dart

Index: pkg/analyzer/tool/summary/build_sdk_summary.dart
diff --git a/pkg/analyzer/tool/summary/build_sdk_summary.dart b/pkg/analyzer/tool/summary/build_sdk_summary.dart
new file mode 100644
index 0000000000000000000000000000000000000000..6bfcf1e3f77d557d39a2b7f812a285363404b177
--- /dev/null
+++ b/pkg/analyzer/tool/summary/build_sdk_summary.dart
@@ -0,0 +1,84 @@
+import 'dart:io';
+
+import 'package:analyzer/dart/element/element.dart';
+import 'package:analyzer/src/generated/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/summary/builder.dart';
+import 'package:analyzer/src/summary/format.dart';
+import 'package:analyzer/src/summary/summarize_elements.dart';
+
+main(List<String> args) {
+  if (args.length < 1 || args.length > 2) {
+    _printUsage();
+    return;
+  }
+  //
+  // Prepare output file path.
+  //
+  String outputFilePath = args[0];
+  if (FileSystemEntity.isDirectorySync(outputFilePath)) {
+    print("'$outputFilePath' is a directory.");
+    _printUsage();
+    return;
+  }
+  //
+  // Prepare SDK path.
+  //
+  String sdkPath;
+  if (args.length == 2) {
+    sdkPath = args[1];
+    if (!FileSystemEntity.isDirectorySync('$sdkPath/lib')) {
+      print("'$sdkPath/lib' does not exist.");
+      _printUsage();
+      return;
+    }
+  } else {
+    sdkPath = DirectoryBasedDartSdk.defaultSdkDirectory.getAbsolutePath();
+  }
+  //
+  // Prepare SDK.
+  //
+  DirectoryBasedDartSdk sdk = new DirectoryBasedDartSdk(new JavaFile(sdkPath));
+  AnalysisContext context = sdk.context;
+  //
+  // Serialize each SDK library.
+  //
+  BuilderContext builderContext = new BuilderContext();
+  List<SdkBundleLibraryBuilder> libraryBuilders = <SdkBundleLibraryBuilder>[];
+  for (SdkLibrary lib in sdk.sdkLibraries) {
+    print('Resolving and serializing: ${lib.shortName}');
+    Source librarySource = sdk.mapDartUri(lib.shortName);
+    LibraryElement libraryElement =
+        context.computeLibraryElement(librarySource);
+    LibrarySerializationResult libraryResult =
+        serializeLibrary(builderContext, libraryElement, context.typeProvider);
+    SdkBundleLibraryBuilder libraryBuilder = encodeSdkBundleLibrary(
+        builderContext,
+        uri: lib.shortName,
+        prelinked: libraryResult.prelinked,
+        unlinkedUnits: libraryResult.unlinkedUnits);
+    libraryBuilders.add(libraryBuilder);
+  }
+  //
+  // Write the whole SDK bundle.
+  //
+  SdkBundleBuilder sdkBundle =
+      encodeSdkBundle(builderContext, libraries: libraryBuilders);
+  File file = new File(outputFilePath);
+  file.writeAsBytesSync(sdkBundle.toBuffer(), mode: FileMode.WRITE_ONLY);
+}
+
+/**
+ * The name of the SDK summary builder application.
+ */
+const BINARY_NAME = "build_sdk_summary";
+
+/**
+ * Print information about how to use the SDK summary builder.
+ */
+void _printUsage() {
+  print('Usage: $BINARY_NAME output_file_path [sdk_path]');
+}