Move package summary reading code into analyzer.

pkg/analyzer_cli/lib/src/package_analyzer.dart

Index: pkg/analyzer_cli/lib/src/package_analyzer.dart
diff --git a/pkg/analyzer_cli/lib/src/package_analyzer.dart b/pkg/analyzer_cli/lib/src/package_analyzer.dart
index 3b53b3f7e304315aaab8c1699cdf4bf12a66f672..746c77a22d14836f4e9475346f2086cc6ed2855c 100644
--- a/pkg/analyzer_cli/lib/src/package_analyzer.dart
+++ b/pkg/analyzer_cli/lib/src/package_analyzer.dart
@@ -11,23 +11,15 @@ import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/file_system/file_system.dart';
 import 'package:analyzer/file_system/physical_file_system.dart';
 import 'package:analyzer/source/package_map_resolver.dart';
-import 'package:analyzer/src/context/cache.dart';
-import 'package:analyzer/src/context/context.dart';
 import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer/src/generated/error.dart';
 import 'package:analyzer/src/generated/java_io.dart';
-import 'package:analyzer/src/generated/resolver.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/summary/format.dart';
-import 'package:analyzer/src/summary/idl.dart';
-import 'package:analyzer/src/summary/resynthesize.dart';
+import 'package:analyzer/src/summary/package_bundle_reader.dart';
 import 'package:analyzer/src/summary/summarize_elements.dart';
-import 'package:analyzer/src/summary/summary_sdk.dart';
-import 'package:analyzer/src/task/dart.dart';
-import 'package:analyzer/task/dart.dart';
-import 'package:analyzer/task/model.dart';
 import 'package:analyzer_cli/src/analyzer_impl.dart';
 import 'package:analyzer_cli/src/driver.dart';
 import 'package:analyzer_cli/src/error_formatter.dart';
@@ -35,214 +27,6 @@ import 'package:analyzer_cli/src/options.dart';
 import 'package:path/path.dart' as pathos;
 
 /**
- * If [uri] has the `package` scheme in form of `package:pkg/file.dart`,
- * return the `pkg` name.  Otherwise return `null`.
- */
-String getPackageName(Uri uri) {
-  if (uri.scheme != 'package') {
-    return null;
-  }
-  String path = uri.path;
-  int index = path.indexOf('/');
-  if (index == -1) {
-    return null;
-  }
-  return path.substring(0, index);
-}
-
-/**
- * A concrete resynthesizer that serves summaries from given file paths.
- */
-class FileBasedSummaryResynthesizer extends SummaryResynthesizer {
-  final Map<String, UnlinkedUnit> unlinkedMap = <String, UnlinkedUnit>{};
-  final Map<String, LinkedLibrary> linkedMap = <String, LinkedLibrary>{};
-
-  FileBasedSummaryResynthesizer(
-      SummaryResynthesizer parent,
-      AnalysisContext context,
-      TypeProvider typeProvider,
-      SourceFactory sourceFactory,
-      bool strongMode,
-      List<String> summaryPaths)
-      : super(parent, context, typeProvider, sourceFactory, strongMode) {
-    summaryPaths.forEach(_fillMaps);
-  }
-
-  @override
-  LinkedLibrary getLinkedSummary(String uri) {
-    return linkedMap[uri];
-  }
-
-  @override
-  UnlinkedUnit getUnlinkedSummary(String uri) {
-    return unlinkedMap[uri];
-  }
-
-  @override
-  bool hasLibrarySummary(String uri) {
-    return linkedMap.containsKey(uri);
-  }
-
-  void _fillMaps(String path) {
-    io.File file = new io.File(path);
-    List<int> buffer = file.readAsBytesSync();
-    PackageBundle bundle = new PackageBundle.fromBuffer(buffer);
-    for (int i = 0; i < bundle.unlinkedUnitUris.length; i++) {
-      unlinkedMap[bundle.unlinkedUnitUris[i]] = bundle.unlinkedUnits[i];
-    }
-    for (int i = 0; i < bundle.linkedLibraryUris.length; i++) {
-      linkedMap[bundle.linkedLibraryUris[i]] = bundle.linkedLibraries[i];
-    }
-  }
-}
-
-/**
- * The [ResultProvider] that provides results from input package summaries.
- */
-class InputPackagesResultProvider extends ResultProvider {
-  final InternalAnalysisContext context;
-  final Map<String, String> packageSummaryInputs;
-
-  FileBasedSummaryResynthesizer resynthesizer;
-  SummaryResultProvider sdkProvider;
-
-  InputPackagesResultProvider(this.context, this.packageSummaryInputs) {
-    InternalAnalysisContext sdkContext = context.sourceFactory.dartSdk.context;
-    sdkProvider = sdkContext.resultProvider;
-    // Set the type provider to prevent the context from computing it.
-    context.typeProvider = sdkContext.typeProvider;
-    // Create a chained resynthesizer.
-    resynthesizer = new FileBasedSummaryResynthesizer(
-        sdkProvider.resynthesizer,
-        context,
-        context.typeProvider,
-        context.sourceFactory,
-        context.analysisOptions.strongMode,
-        packageSummaryInputs.values.toList());
-  }
-
-  bool compute(CacheEntry entry, ResultDescriptor result) {
-    if (sdkProvider.compute(entry, result)) {
-      return true;
-    }
-    AnalysisTarget target = entry.target;
-    // Only library results are supported for now.
-    if (target is Source) {
-      Uri uri = target.uri;
-      // We know how to server results to input packages.
-      String sourcePackageName = getPackageName(uri);
-      if (!packageSummaryInputs.containsKey(sourcePackageName)) {
-        return false;
-      }
-      // Provide known results.
-      String uriString = uri.toString();
-      if (result == LIBRARY_ELEMENT1 ||
-          result == LIBRARY_ELEMENT2 ||
-          result == LIBRARY_ELEMENT3 ||
-          result == LIBRARY_ELEMENT4 ||
-          result == LIBRARY_ELEMENT5 ||
-          result == LIBRARY_ELEMENT6 ||
-          result == LIBRARY_ELEMENT7 ||
-          result == LIBRARY_ELEMENT8 ||
-          result == LIBRARY_ELEMENT ||
-          false) {
-        LibraryElement libraryElement =
-            resynthesizer.getLibraryElement(uriString);
-        entry.setValue(result, libraryElement, TargetedResult.EMPTY_LIST);
-        return true;
-      } else if (result == READY_LIBRARY_ELEMENT2 ||
-          result == READY_LIBRARY_ELEMENT5 ||
-          result == READY_LIBRARY_ELEMENT6) {
-        entry.setValue(result, true, TargetedResult.EMPTY_LIST);
-        return true;
-      } else if (result == SOURCE_KIND) {
-        if (resynthesizer.linkedMap.containsKey(uriString)) {
-          entry.setValue(result, SourceKind.LIBRARY, TargetedResult.EMPTY_LIST);
-          return true;
-        }
-        if (resynthesizer.unlinkedMap.containsKey(uriString)) {
-          entry.setValue(result, SourceKind.PART, TargetedResult.EMPTY_LIST);
-          return true;
-        }
-        return false;
-      }
-    }
-    return false;
-  }
-}
-
-/**
- * The [UriResolver] that knows about sources that are parts of packages which
- * are served from their summaries.
- */
-class InSummaryPackageUriResolver extends UriResolver {
-  final Map<String, String> packageSummaryInputs;
-
-  InSummaryPackageUriResolver(this.packageSummaryInputs);
-
-  @override
-  Source resolveAbsolute(Uri uri, [Uri actualUri]) {
-    actualUri ??= uri;
-    String packageName = getPackageName(actualUri);
-    if (packageSummaryInputs.containsKey(packageName)) {
-      return new InSummarySource(actualUri);
-    }
-    return null;
-  }
-}
-
-/**
- * A placeholder of a source that is part of a package whose analysis results
- * are served from its summary.  This source uses its URI as [fullName] and has
- * empty contents.
- */
-class InSummarySource extends Source {
-  final Uri uri;
-
-  InSummarySource(this.uri);
-
-  @override
-  TimestampedData<String> get contents => new TimestampedData<String>(0, '');
-
-  @override
-  String get encoding => uri.toString();
-
-  @override
-  String get fullName => encoding;
-
-  @override
-  int get hashCode => uri.hashCode;
-
-  @override
-  bool get isInSystemLibrary => false;
-
-  @override
-  int get modificationStamp => 0;
-
-  @override
-  String get shortName => pathos.basename(fullName);
-
-  @override
-  UriKind get uriKind => UriKind.PACKAGE_URI;
-
-  @override
-  bool operator ==(Object object) =>
-      object is InSummarySource && object.uri == uri;
-
-  @override
-  bool exists() => true;
-
-  @override
-  Uri resolveRelativeUri(Uri relativeUri) {
-    Uri baseUri = uri;
-    return baseUri.resolveUri(relativeUri);
-  }
-
-  @override
-  String toString() => uri.toString();
-}
-
-/**
  * The hermetic whole package analyzer.
  */
 class PackageAnalyzer {