Remove unused method from LibraryContext, use ElementResynthesizer directly.

pkg/analyzer/lib/src/dart/analysis/library_context.dart

 // Copyright (c) 2017, 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.
 
 import 'package:analyzer/context/declared_variables.dart';
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/element/element.dart'
     show CompilationUnitElement, LibraryElement;
 import 'package:analyzer/error/error.dart';
 import 'package:analyzer/src/context/context.dart';
 import 'package:analyzer/src/dart/analysis/driver.dart';
 import 'package:analyzer/src/dart/analysis/file_state.dart';
+import 'package:analyzer/src/dart/element/element.dart';
+import 'package:analyzer/src/dart/element/handle.dart';
 import 'package:analyzer/src/generated/engine.dart'
     show AnalysisContext, AnalysisEngine, AnalysisOptions;
 import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer/src/summary/format.dart';
 import 'package:analyzer/src/summary/idl.dart';
 import 'package:analyzer/src/summary/link.dart';
 import 'package:analyzer/src/summary/package_bundle_reader.dart';
-import 'package:analyzer/src/task/dart.dart' show COMPILATION_UNIT_ELEMENT;
-import 'package:analyzer/task/dart.dart' show LibrarySpecificUnit;
 import 'package:front_end/src/base/performace_logger.dart';
 import 'package:front_end/src/byte_store/byte_store.dart';
 
 /**
  * Context information necessary to analyze one or more libraries within an
  * [AnalysisDriver].
  *
  * Currently this is implemented as a wrapper around [AnalysisContext].
  * TODO(paulberry): make a front end API that this can make use of instead.
  */
 class LibraryContext {
   final SummaryDataStore store;
 
   /**
    * The [AnalysisContext] which is used to do the analysis.
    */
   final AnalysisContext _analysisContext;
 
   /**
+   * The resynthesizer that resynthesizes elements in [_analysisContext].
+   */
+  final ElementResynthesizer _resynthesizer;
+
+  /**
    * Create a [LibraryContext] which is prepared to analyze [targetLibrary].
    */
   factory LibraryContext.forSingleLibrary(
       FileState targetLibrary,
       PerformanceLog logger,
       PackageBundle sdkBundle,
       ByteStore byteStore,
       AnalysisOptions options,
       DeclaredVariables declaredVariables,
       SourceFactory sourceFactory,
@@ skipping 74 matching lines @@
 
       linkedLibraries.forEach((uri, linkedBuilder) {
         FileState library = libraries[uri];
         String key = '${library.transitiveSignature}.linked';
         List<int> bytes = linkedBuilder.toBuffer();
         LinkedLibrary linked = new LinkedLibrary.fromBuffer(bytes);
         store.addLinkedLibrary(uri, linked);
         byteStore.put(key, bytes);
       });
 
-      AnalysisContextImpl analysisContext = _createAnalysisContext(
+      var resynthesizingContext = _createResynthesizingContext(
           options, declaredVariables, sourceFactory, store);
-      analysisContext.contentCache = new _ContentCacheWrapper(fsState);
+      resynthesizingContext.context.contentCache =
+          new _ContentCacheWrapper(fsState);
 
-      return new LibraryContext._(store, analysisContext);
+      return new LibraryContext._(store, resynthesizingContext.context,
+          resynthesizingContext.resynthesizer);
     });
   }
 
-  LibraryContext._(this.store, this._analysisContext);
+  LibraryContext._(this.store, this._analysisContext, this._resynthesizer);
 
   /**
    * Computes a [CompilationUnitElement] for the given library/unit pair.
    */
   CompilationUnitElement computeUnitElement(
       Source librarySource, Source unitSource) {
-    return _analysisContext.computeResult(
-        new LibrarySpecificUnit(librarySource, unitSource),
-        COMPILATION_UNIT_ELEMENT);
+    String libraryUri = librarySource.uri.toString();
+    String unitUri = unitSource.uri.toString();
+    return _resynthesizer.getElement(
+        new ElementLocationImpl.con3(<String>[libraryUri, unitUri]));
   }
 
   /**
    * Cleans up any persistent resources used by this [LibraryContext].
    *
    * Should be called once the [LibraryContext] is no longer needed.
    */
   void dispose() {
     _analysisContext.dispose();
   }
 
   /**
-   * Computes a resolved [CompilationUnit] and a list of [AnalysisError]s for
-   * the given library/unit pair.
-   */
-  ResolutionResult resolveUnit(Source librarySource, Source unitSource) {
-    CompilationUnit resolvedUnit =
-        _analysisContext.resolveCompilationUnit2(unitSource, librarySource);
-    List<AnalysisError> errors = _analysisContext.computeErrors(unitSource);
-    return new ResolutionResult(resolvedUnit, errors);
-  }
-
-  /**
    * Resynthesize the [LibraryElement] from the given [store].
    */
   static LibraryElement resynthesizeLibraryElement(
       AnalysisOptions analysisOptions,
       DeclaredVariables declaredVariables,
       SourceFactory sourceFactory,
       SummaryDataStore store,
       String uri) {
-    AnalysisContextImpl analysisContext = _createAnalysisContext(
+    var resynthesizingContext = _createResynthesizingContext(
         analysisOptions, declaredVariables, sourceFactory, store);
     try {
-      return new StoreBasedSummaryResynthesizer(
-              analysisContext, sourceFactory, analysisOptions.strongMode, store)
-          .getLibraryElement(uri);
+      return resynthesizingContext.resynthesizer
+          .getElement(new ElementLocationImpl.con3([uri]));
     } finally {
-      analysisContext.dispose();
+      resynthesizingContext.context.dispose();
     }
   }
 
-  static AnalysisContextImpl _createAnalysisContext(
+  static _ResynthesizingAnalysisContext _createResynthesizingContext(
       AnalysisOptions analysisOptions,
       DeclaredVariables declaredVariables,
       SourceFactory sourceFactory,
       SummaryDataStore store) {
     AnalysisContextImpl analysisContext =
         AnalysisEngine.instance.createAnalysisContext();
     analysisContext.useSdkCachePartition = false;
     analysisContext.analysisOptions = analysisOptions;
     analysisContext.declaredVariables.addAll(declaredVariables);
     analysisContext.sourceFactory = sourceFactory.clone();
-    analysisContext.resultProvider =
-        new InputPackagesResultProvider(analysisContext, store);
-    return analysisContext;
+    var provider = new InputPackagesResultProvider(analysisContext, store);
+    analysisContext.resultProvider = provider;
+    return new _ResynthesizingAnalysisContext(
+        analysisContext, provider.resynthesizer);
   }
 }
 
 /**
  * Container object holding the result of a call to
  * [LibraryContext.resolveUnit].
  */
 class ResolutionResult {
   final CompilationUnit resolvedUnit;
   final List<AnalysisError> errors;
@@ skipping 42 matching lines @@
   @override
   String setContents(Source source, String contents) {
     throw new UnimplementedError();
   }
 
   FileState _getFileForSource(Source source) {
     String path = source.fullName;
     return fsState.getFileForPath(path);
   }
 }
+
+/**
+ * Container with analysis context and the corresponding resynthesizer.
+ */
+class _ResynthesizingAnalysisContext {
+  final AnalysisContextImpl context;
+  final ElementResynthesizer resynthesizer;
+
+  _ResynthesizingAnalysisContext(this.context, this.resynthesizer);
+}