[migration] namespace.dart

Change-Id: I87d287cd73e34b3797258e27e4b80e57942bd7c5
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/410163
Reviewed-by: Konstantin Shcheglov <[email protected]>
Commit-Queue: Brian Wilkerson <[email protected]>

Author: bwilkerson

pkg/analysis_server/lib/src/services/correction/namespace.dart

@@ -2,10 +2,7 @@
 // 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.
 
-// ignore_for_file: analyzer_use_new_elements
-
 import 'package:analyzer/dart/ast/ast.dart';
-import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/dart/element/element2.dart';
 import 'package:analyzer/src/dart/resolver/scope.dart';
 
@@ -18,17 +15,6 @@ Element2? getExportedElement(LibraryElement2? library, String name) {
   return namespace.definedNames2[name];
 }
 
-/// Return the [LibraryImportElement] that is referenced by [prefixNode], or
-/// `null` if the node does not reference a prefix or if we cannot determine
-/// which import is being referenced.
-LibraryImportElement? getImportElement(SimpleIdentifier prefixNode) {
-  var parent = prefixNode.parent;
-  if (parent is ImportDirective) {
-    return parent.element;
-  }
-  return _getImportElementInfo(prefixNode);
-}
-
 /// Return the [LibraryImport] that is referenced by [prefixNode], or
 /// `null` if the node does not reference a prefix or if we cannot determine
 /// which import is being referenced.
@@ -40,78 +26,9 @@ LibraryImport? getImportElement2(SimpleIdentifier prefixNode) {
   return _getImportElementInfo2(prefixNode);
 }
 
-/// Return the [LibraryImportElement] that declared [prefix] and imports [element].
-///
-/// [libraryElement] - the [LibraryElement] where reference is.
-/// [prefix] - the import prefix, maybe `null`.
-/// [element] - the referenced element.
-LibraryImportElement? _getImportElement(
-  LibraryElement libraryElement,
-  String prefix,
-  Element element,
-) {
-  if (element.enclosingElement3 is! CompilationUnitElement) {
-    return null;
-  }
-  var usedLibrary = element.library;
-  // find ImportElement that imports used library with used prefix
-  List<LibraryImportElement>? candidates;
-  for (var importElement
-      in libraryElement.definingCompilationUnit.libraryImports) {
-    // required library
-    if (importElement.importedLibrary != usedLibrary) {
-      continue;
-    }
-    // required prefix
-    var prefixElement = importElement.prefix?.element;
-    if (prefixElement == null) {
-      continue;
-    }
-    if (prefix != prefixElement.name) {
-      continue;
-    }
-    // no combinators => only possible candidate
-    if (importElement.combinators.isEmpty) {
-      return importElement;
-    }
-    // OK, we have candidate
-    candidates ??= [];
-    candidates.add(importElement);
-  }
-  // no candidates, probably element is defined in this library
-  if (candidates == null) {
-    return null;
-  }
-  // one candidate
-  if (candidates.length == 1) {
-    return candidates[0];
-  }
-
-  var importElementsMap = <LibraryImportElement, Set<Element>>{};
-  // ensure that each ImportElement has set of elements
-  for (var importElement in candidates) {
-    if (importElementsMap.containsKey(importElement)) {
-      continue;
-    }
-    var namespace = importElement.namespace;
-    var elements = Set<Element>.from(namespace.definedNames.values);
-    importElementsMap[importElement] = elements;
-  }
-  // use import namespace to choose correct one
-  for (var entry in importElementsMap.entries) {
-    var importElement = entry.key;
-    var elements = entry.value;
-    if (elements.contains(element)) {
-      return importElement;
-    }
-  }
-  // not found
-  return null;
-}
-
-/// Return the [LibraryImportElement] that declared [prefix] and imports [element].
+/// Return the [LibraryImport] that declared [prefix] and imports [element].
 ///
-/// [libraryElement] - the [LibraryElement] where reference is.
+/// [libraryElement] - the [LibraryElement2] where reference is.
 /// [prefix] - the import prefix, maybe `null`.
 /// [element] - the referenced element.
 LibraryImport? _getImportElement2(
@@ -177,40 +94,8 @@ LibraryImport? _getImportElement2(
   return null;
 }
 
-/// Returns the [LibraryImportElement] that is referenced by [prefixNode] with a
-/// [PrefixElement], maybe `null`.
-LibraryImportElement? _getImportElementInfo(SimpleIdentifier prefixNode) {
-  // prepare environment
-  var parent = prefixNode.parent;
-  var unit = prefixNode.thisOrAncestorOfType<CompilationUnit>();
-  var libraryElement = unit?.declaredElement?.library;
-  if (libraryElement == null) {
-    return null;
-  }
-  // prepare used element
-  Element? usedElement;
-  if (parent is PrefixedIdentifier) {
-    var prefixed = parent;
-    if (prefixed.prefix == prefixNode) {
-      usedElement = prefixed.staticElement;
-    }
-  } else if (parent is MethodInvocation) {
-    var invocation = parent;
-    if (invocation.target == prefixNode) {
-      usedElement = invocation.methodName.staticElement;
-    }
-  }
-  // we need used Element
-  if (usedElement == null) {
-    return null;
-  }
-  // find ImportElement
-  var prefix = prefixNode.name;
-  return _getImportElement(libraryElement, prefix, usedElement);
-}
-
 /// Returns the [LibraryImport] that is referenced by [prefixNode] with a
-/// [PrefixElement], maybe `null`.
+/// [PrefixElement2], maybe `null`.
 LibraryImport? _getImportElementInfo2(SimpleIdentifier prefixNode) {
   // prepare environment
   var parent = prefixNode.parent;