Removed fixed dependencies

packages/analyzer/test/generated/element_resolver_test.dart

+// Copyright (c) 2016, 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.
+
+library analyzer.test.generated.element_resolver_test;
+
+import 'package:analyzer/dart/ast/ast.dart';
+import 'package:analyzer/dart/ast/token.dart';
+import 'package:analyzer/dart/element/element.dart';
+import 'package:analyzer/dart/element/type.dart';
+import 'package:analyzer/file_system/memory_file_system.dart';
+import 'package:analyzer/src/dart/element/element.dart';
+import 'package:analyzer/src/generated/element_resolver.dart';
+import 'package:analyzer/src/generated/engine.dart';
+import 'package:analyzer/src/generated/resolver.dart';
+import 'package:analyzer/src/generated/source.dart';
+import 'package:analyzer/src/generated/testing/ast_factory.dart';
+import 'package:analyzer/src/generated/testing/element_factory.dart';
+import 'package:analyzer/src/generated/testing/test_type_provider.dart';
+import 'package:analyzer/src/source/source_resource.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+import 'package:unittest/unittest.dart';
+
+import '../utils.dart';
+import 'analysis_context_factory.dart';
+import 'resolver_test_case.dart';
+import 'test_support.dart';
+
+main() {
+  initializeTestEnvironment();
+  defineReflectiveTests(ElementResolverCodeTest);
+  defineReflectiveTests(ElementResolverTest);
+}
+
+@reflectiveTest
+class ElementResolverCodeTest extends ResolverTestCase {
+  void test_annotation_class_namedConstructor() {
+    addNamedSource(
+        '/a.dart',
+        r'''
+class A {
+  const A.named();
+}
+''');
+    _validateAnnotation('', '@A.named()', (SimpleIdentifier name1,
+        SimpleIdentifier name2,
+        SimpleIdentifier name3,
+        Element annotationElement) {
+      expect(name1, isNotNull);
+      expect(name1.staticElement, new isInstanceOf<ClassElement>());
+      expect(name1.staticElement.displayName, 'A');
+      expect(name2, isNotNull);
+      expect(name2.staticElement, new isInstanceOf<ConstructorElement>());
+      expect(name2.staticElement.displayName, 'named');
+      expect(name3, isNull);
+      if (annotationElement is ConstructorElement) {
+        expect(annotationElement, same(name2.staticElement));
+        expect(annotationElement.enclosingElement, name1.staticElement);
+        expect(annotationElement.displayName, 'named');
+        expect(annotationElement.parameters, isEmpty);
+      } else {
+        fail('Expected "annotationElement" is ConstructorElement, '
+            'but (${annotationElement?.runtimeType}) $annotationElement found.');
+      }
+    });
+  }
+
+  void test_annotation_class_prefixed_namedConstructor() {
+    addNamedSource(
+        '/a.dart',
+        r'''
+class A {
+  const A.named();
+}
+''');
+    _validateAnnotation('as p', '@p.A.named()', (SimpleIdentifier name1,
+        SimpleIdentifier name2,
+        SimpleIdentifier name3,
+        Element annotationElement) {
+      expect(name1, isNotNull);
+      expect(name1.staticElement, new isInstanceOf<PrefixElement>());
+      expect(name1.staticElement.displayName, 'p');
+      expect(name2, isNotNull);
+      expect(name2.staticElement, new isInstanceOf<ClassElement>());
+      expect(name2.staticElement.displayName, 'A');
+      expect(name3, isNotNull);
+      expect(name3.staticElement, new isInstanceOf<ConstructorElement>());
+      expect(name3.staticElement.displayName, 'named');
+      if (annotationElement is ConstructorElement) {
+        expect(annotationElement, same(name3.staticElement));
+        expect(annotationElement.enclosingElement, name2.staticElement);
+        expect(annotationElement.displayName, 'named');
+        expect(annotationElement.parameters, isEmpty);
+      } else {
+        fail('Expected "annotationElement" is ConstructorElement, '
+            'but (${annotationElement?.runtimeType}) $annotationElement found.');
+      }
+    });
+  }
+
+  void test_annotation_class_prefixed_staticConstField() {
+    addNamedSource(
+        '/a.dart',
+        r'''
+class A {
+  static const V = 0;
+}
+''');
+    _validateAnnotation('as p', '@p.A.V', (SimpleIdentifier name1,
+        SimpleIdentifier name2,
+        SimpleIdentifier name3,
+        Element annotationElement) {
+      expect(name1, isNotNull);
+      expect(name1.staticElement, new isInstanceOf<PrefixElement>());
+      expect(name1.staticElement.displayName, 'p');
+      expect(name2, isNotNull);
+      expect(name2.staticElement, new isInstanceOf<ClassElement>());
+      expect(name2.staticElement.displayName, 'A');
+      expect(name3, isNotNull);
+      expect(name3.staticElement, new isInstanceOf<PropertyAccessorElement>());
+      expect(name3.staticElement.displayName, 'V');
+      if (annotationElement is PropertyAccessorElement) {
+        expect(annotationElement, same(name3.staticElement));
+        expect(annotationElement.enclosingElement, name2.staticElement);
+        expect(annotationElement.displayName, 'V');
+      } else {
+        fail('Expected "annotationElement" is PropertyAccessorElement, '
+            'but (${annotationElement?.runtimeType}) $annotationElement found.');
+      }
+    });
+  }
+
+  void test_annotation_class_prefixed_unnamedConstructor() {
+    addNamedSource(
+        '/a.dart',
+        r'''
+class A {
+  const A();
+}
+''');
+    _validateAnnotation('as p', '@p.A', (SimpleIdentifier name1,
+        SimpleIdentifier name2,
+        SimpleIdentifier name3,
+        Element annotationElement) {
+      expect(name1, isNotNull);
+      expect(name1.staticElement, new isInstanceOf<PrefixElement>());
+      expect(name1.staticElement.displayName, 'p');
+      expect(name2, isNotNull);
+      expect(name2.staticElement, new isInstanceOf<ClassElement>());
+      expect(name2.staticElement.displayName, 'A');
+      expect(name3, isNull);
+      if (annotationElement is ConstructorElement) {
+        expect(annotationElement.enclosingElement, name2.staticElement);
+        expect(annotationElement.displayName, '');
+        expect(annotationElement.parameters, isEmpty);
+      } else {
+        fail('Expected "annotationElement" is ConstructorElement, '
+            'but (${annotationElement?.runtimeType}) $annotationElement found.');
+      }
+    });
+  }
+
+  void test_annotation_class_staticConstField() {
+    addNamedSource(
+        '/a.dart',
+        r'''
+class A {
+  static const V = 0;
+}
+''');
+    _validateAnnotation('', '@A.V', (SimpleIdentifier name1,
+        SimpleIdentifier name2,
+        SimpleIdentifier name3,
+        Element annotationElement) {
+      expect(name1, isNotNull);
+      expect(name1.staticElement, new isInstanceOf<ClassElement>());
+      expect(name1.staticElement.displayName, 'A');
+      expect(name2, isNotNull);
+      expect(name2.staticElement, new isInstanceOf<PropertyAccessorElement>());
+      expect(name2.staticElement.displayName, 'V');
+      expect(name3, isNull);
+      if (annotationElement is PropertyAccessorElement) {
+        expect(annotationElement, same(name2.staticElement));
+        expect(annotationElement.enclosingElement, name1.staticElement);
+        expect(annotationElement.displayName, 'V');
+      } else {
+        fail('Expected "annotationElement" is PropertyAccessorElement, '
+            'but (${annotationElement?.runtimeType}) $annotationElement found.');
+      }
+    });
+  }
+
+  void test_annotation_class_unnamedConstructor() {
+    addNamedSource(
+        '/a.dart',
+        r'''
+class A {
+  const A();
+}
+''');
+    _validateAnnotation('', '@A', (SimpleIdentifier name1,
+        SimpleIdentifier name2,
+        SimpleIdentifier name3,
+        Element annotationElement) {
+      expect(name1, isNotNull);
+      expect(name1.staticElement, new isInstanceOf<ClassElement>());
+      expect(name1.staticElement.displayName, 'A');
+      expect(name2, isNull);
+      expect(name3, isNull);
+      if (annotationElement is ConstructorElement) {
+        expect(annotationElement.enclosingElement, name1.staticElement);
+        expect(annotationElement.displayName, '');
+        expect(annotationElement.parameters, isEmpty);
+      } else {
+        fail('Expected "annotationElement" is ConstructorElement, '
+            'but (${annotationElement?.runtimeType}) $annotationElement found.');
+      }
+    });
+  }
+
+  void test_annotation_topLevelVariable() {
+    addNamedSource(
+        '/a.dart',
+        r'''
+const V = 0;
+''');
+    _validateAnnotation('', '@V', (SimpleIdentifier name1,
+        SimpleIdentifier name2,
+        SimpleIdentifier name3,
+        Element annotationElement) {
+      expect(name1, isNotNull);
+      expect(name1.staticElement, new isInstanceOf<PropertyAccessorElement>());
+      expect(name1.staticElement.displayName, 'V');
+      expect(name2, isNull);
+      expect(name3, isNull);
+      if (annotationElement is PropertyAccessorElement) {
+        expect(annotationElement, same(name1.staticElement));
+        expect(annotationElement.enclosingElement,
+            new isInstanceOf<CompilationUnitElement>());
+        expect(annotationElement.displayName, 'V');
+      } else {
+        fail('Expected "annotationElement" is PropertyAccessorElement, '
+            'but (${annotationElement?.runtimeType}) $annotationElement found.');
+      }
+    });
+  }
+
+  void test_annotation_topLevelVariable_prefixed() {
+    addNamedSource(
+        '/a.dart',
+        r'''
+const V = 0;
+''');
+    _validateAnnotation('as p', '@p.V', (SimpleIdentifier name1,
+        SimpleIdentifier name2,
+        SimpleIdentifier name3,
+        Element annotationElement) {
+      expect(name1, isNotNull);
+      expect(name1.staticElement, new isInstanceOf<PrefixElement>());
+      expect(name1.staticElement.displayName, 'p');
+      expect(name2, isNotNull);
+      expect(name2.staticElement, new isInstanceOf<PropertyAccessorElement>());
+      expect(name2.staticElement.displayName, 'V');
+      expect(name3, isNull);
+      if (annotationElement is PropertyAccessorElement) {
+        expect(annotationElement, same(name2.staticElement));
+        expect(annotationElement.enclosingElement,
+            new isInstanceOf<CompilationUnitElement>());
+        expect(annotationElement.displayName, 'V');
+      } else {
+        fail('Expected "annotationElement" is PropertyAccessorElement, '
+            'but (${annotationElement?.runtimeType}) $annotationElement found.');
+      }
+    });
+  }
+
+  void _validateAnnotation(
+      String annotationPrefix,
+      String annotationText,
+      validator(SimpleIdentifier name1, SimpleIdentifier name2,
+          SimpleIdentifier name3, Element annotationElement)) {
+    CompilationUnit unit = resolveSource('''
+import 'a.dart' $annotationPrefix;
+$annotationText
+class C {}
+''');
+    var clazz = unit.declarations.single as ClassDeclaration;
+    Annotation annotation = clazz.metadata.single;
+    Identifier name = annotation.name;
+    Element annotationElement = annotation.element;
+    if (name is SimpleIdentifier) {
+      validator(name, null, annotation.constructorName, annotationElement);
+    } else if (name is PrefixedIdentifier) {
+      validator(name.prefix, name.identifier, annotation.constructorName,
+          annotationElement);
+    } else {
+      fail('Uknown "name": ${name?.runtimeType} $name');
+    }
+  }
+}
+
+@reflectiveTest
+class ElementResolverTest extends EngineTestCase {
+  /**
+   * The error listener to which errors will be reported.
+   */
+  GatheringErrorListener _listener;
+
+  /**
+   * The type provider used to access the types.
+   */
+  TestTypeProvider _typeProvider;
+
+  /**
+   * The library containing the code being resolved.
+   */
+  LibraryElementImpl _definingLibrary;
+
+  /**
+   * The resolver visitor that maintains the state for the resolver.
+   */
+  ResolverVisitor _visitor;
+
+  /**
+   * The resolver being used to resolve the test cases.
+   */
+  ElementResolver _resolver;
+
+  void fail_visitExportDirective_combinators() {
+    fail("Not yet tested");
+    // Need to set up the exported library so that the identifier can be
+    // resolved.
+    ExportDirective directive = AstFactory.exportDirective2(null, [
+      AstFactory.hideCombinator2(["A"])
+    ]);
+    _resolveNode(directive);
+    _listener.assertNoErrors();
+  }
+
+  void fail_visitFunctionExpressionInvocation() {
+    fail("Not yet tested");
+    _listener.assertNoErrors();
+  }
+
+  void fail_visitImportDirective_combinators_noPrefix() {
+    fail("Not yet tested");
+    // Need to set up the imported library so that the identifier can be
+    // resolved.
+    ImportDirective directive = AstFactory.importDirective3(null, null, [
+      AstFactory.showCombinator2(["A"])
+    ]);
+    _resolveNode(directive);
+    _listener.assertNoErrors();
+  }
+
+  void fail_visitImportDirective_combinators_prefix() {
+    fail("Not yet tested");
+    // Need to set up the imported library so that the identifiers can be
+    // resolved.
+    String prefixName = "p";
+    _definingLibrary.imports = <ImportElement>[
+      ElementFactory.importFor(null, ElementFactory.prefix(prefixName))
+    ];
+    ImportDirective directive = AstFactory.importDirective3(null, prefixName, [
+      AstFactory.showCombinator2(["A"]),
+      AstFactory.hideCombinator2(["B"])
+    ]);
+    _resolveNode(directive);
+    _listener.assertNoErrors();
+  }
+
+  void fail_visitRedirectingConstructorInvocation() {
+    fail("Not yet tested");
+    _listener.assertNoErrors();
+  }
+
+  @override
+  void setUp() {
+    super.setUp();
+    _listener = new GatheringErrorListener();
+    _typeProvider = new TestTypeProvider();
+    _resolver = _createResolver();
+  }
+
+  void test_lookUpMethodInInterfaces() {
+    InterfaceType intType = _typeProvider.intType;
+    //
+    // abstract class A { int operator[](int index); }
+    //
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    MethodElement operator =
+        ElementFactory.methodElement("[]", intType, [intType]);
+    classA.methods = <MethodElement>[operator];
+    //
+    // class B implements A {}
+    //
+    ClassElementImpl classB = ElementFactory.classElement2("B");
+    classB.interfaces = <InterfaceType>[classA.type];
+    //
+    // class C extends Object with B {}
+    //
+    ClassElementImpl classC = ElementFactory.classElement2("C");
+    classC.mixins = <InterfaceType>[classB.type];
+    //
+    // class D extends C {}
+    //
+    ClassElementImpl classD = ElementFactory.classElement("D", classC.type);
+    //
+    // D a;
+    // a[i];
+    //
+    SimpleIdentifier array = AstFactory.identifier3("a");
+    array.staticType = classD.type;
+    IndexExpression expression =
+        AstFactory.indexExpression(array, AstFactory.identifier3("i"));
+    expect(_resolveIndexExpression(expression), same(operator));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitAssignmentExpression_compound() {
+    InterfaceType intType = _typeProvider.intType;
+    SimpleIdentifier leftHandSide = AstFactory.identifier3("a");
+    leftHandSide.staticType = intType;
+    AssignmentExpression assignment = AstFactory.assignmentExpression(
+        leftHandSide, TokenType.PLUS_EQ, AstFactory.integer(1));
+    _resolveNode(assignment);
+    expect(
+        assignment.staticElement, same(getMethod(_typeProvider.numType, "+")));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitAssignmentExpression_simple() {
+    AssignmentExpression expression = AstFactory.assignmentExpression(
+        AstFactory.identifier3("x"), TokenType.EQ, AstFactory.integer(0));
+    _resolveNode(expression);
+    expect(expression.staticElement, isNull);
+    _listener.assertNoErrors();
+  }
+
+  void test_visitBinaryExpression_bangEq() {
+    // String i;
+    // var j;
+    // i == j
+    InterfaceType stringType = _typeProvider.stringType;
+    SimpleIdentifier left = AstFactory.identifier3("i");
+    left.staticType = stringType;
+    BinaryExpression expression = AstFactory.binaryExpression(
+        left, TokenType.BANG_EQ, AstFactory.identifier3("j"));
+    _resolveNode(expression);
+    var stringElement = stringType.element;
+    expect(expression.staticElement, isNotNull);
+    expect(
+        expression.staticElement,
+        stringElement.lookUpMethod(
+            TokenType.EQ_EQ.lexeme, stringElement.library));
+    expect(expression.propagatedElement, isNull);
+    _listener.assertNoErrors();
+  }
+
+  void test_visitBinaryExpression_eq() {
+    // String i;
+    // var j;
+    // i == j
+    InterfaceType stringType = _typeProvider.stringType;
+    SimpleIdentifier left = AstFactory.identifier3("i");
+    left.staticType = stringType;
+    BinaryExpression expression = AstFactory.binaryExpression(
+        left, TokenType.EQ_EQ, AstFactory.identifier3("j"));
+    _resolveNode(expression);
+    var stringElement = stringType.element;
+    expect(
+        expression.staticElement,
+        stringElement.lookUpMethod(
+            TokenType.EQ_EQ.lexeme, stringElement.library));
+    expect(expression.propagatedElement, isNull);
+    _listener.assertNoErrors();
+  }
+
+  void test_visitBinaryExpression_plus() {
+    // num i;
+    // var j;
+    // i + j
+    InterfaceType numType = _typeProvider.numType;
+    SimpleIdentifier left = AstFactory.identifier3("i");
+    left.staticType = numType;
+    BinaryExpression expression = AstFactory.binaryExpression(
+        left, TokenType.PLUS, AstFactory.identifier3("j"));
+    _resolveNode(expression);
+    expect(expression.staticElement, getMethod(numType, "+"));
+    expect(expression.propagatedElement, isNull);
+    _listener.assertNoErrors();
+  }
+
+  void test_visitBinaryExpression_plus_propagatedElement() {
+    // var i = 1;
+    // var j;
+    // i + j
+    InterfaceType numType = _typeProvider.numType;
+    SimpleIdentifier left = AstFactory.identifier3("i");
+    left.propagatedType = numType;
+    BinaryExpression expression = AstFactory.binaryExpression(
+        left, TokenType.PLUS, AstFactory.identifier3("j"));
+    _resolveNode(expression);
+    expect(expression.staticElement, isNull);
+    expect(expression.propagatedElement, getMethod(numType, "+"));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitBreakStatement_withLabel() {
+    // loop: while (true) {
+    //   break loop;
+    // }
+    String label = "loop";
+    LabelElementImpl labelElement = new LabelElementImpl.forNode(
+        AstFactory.identifier3(label), false, false);
+    BreakStatement breakStatement = AstFactory.breakStatement2(label);
+    Expression condition = AstFactory.booleanLiteral(true);
+    WhileStatement whileStatement =
+        AstFactory.whileStatement(condition, breakStatement);
+    expect(_resolveBreak(breakStatement, labelElement, whileStatement),
+        same(labelElement));
+    expect(breakStatement.target, same(whileStatement));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitBreakStatement_withoutLabel() {
+    BreakStatement statement = AstFactory.breakStatement();
+    _resolveStatement(statement, null, null);
+    _listener.assertNoErrors();
+  }
+
+  void test_visitCommentReference_prefixedIdentifier_class_getter() {
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    // set accessors
+    String propName = "p";
+    PropertyAccessorElement getter =
+        ElementFactory.getterElement(propName, false, _typeProvider.intType);
+    PropertyAccessorElement setter =
+        ElementFactory.setterElement(propName, false, _typeProvider.intType);
+    classA.accessors = <PropertyAccessorElement>[getter, setter];
+    // set name scope
+    _visitor.nameScope = new EnclosedScope(null)
+      ..defineNameWithoutChecking('A', classA);
+    // prepare "A.p"
+    PrefixedIdentifier prefixed = AstFactory.identifier5('A', 'p');
+    CommentReference commentReference = new CommentReference(null, prefixed);
+    // resolve
+    _resolveNode(commentReference);
+    expect(prefixed.prefix.staticElement, classA);
+    expect(prefixed.identifier.staticElement, getter);
+    _listener.assertNoErrors();
+  }
+
+  void test_visitCommentReference_prefixedIdentifier_class_method() {
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    // set method
+    MethodElement method =
+        ElementFactory.methodElement("m", _typeProvider.intType);
+    classA.methods = <MethodElement>[method];
+    // set name scope
+    _visitor.nameScope = new EnclosedScope(null)
+      ..defineNameWithoutChecking('A', classA);
+    // prepare "A.m"
+    PrefixedIdentifier prefixed = AstFactory.identifier5('A', 'm');
+    CommentReference commentReference = new CommentReference(null, prefixed);
+    // resolve
+    _resolveNode(commentReference);
+    expect(prefixed.prefix.staticElement, classA);
+    expect(prefixed.identifier.staticElement, method);
+    _listener.assertNoErrors();
+  }
+
+  void test_visitCommentReference_prefixedIdentifier_class_operator() {
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    // set method
+    MethodElement method =
+        ElementFactory.methodElement("==", _typeProvider.boolType);
+    classA.methods = <MethodElement>[method];
+    // set name scope
+    _visitor.nameScope = new EnclosedScope(null)
+      ..defineNameWithoutChecking('A', classA);
+    // prepare "A.=="
+    PrefixedIdentifier prefixed = AstFactory.identifier5('A', '==');
+    CommentReference commentReference = new CommentReference(null, prefixed);
+    // resolve
+    _resolveNode(commentReference);
+    expect(prefixed.prefix.staticElement, classA);
+    expect(prefixed.identifier.staticElement, method);
+    _listener.assertNoErrors();
+  }
+
+  void test_visitConstructorName_named() {
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    String constructorName = "a";
+    ConstructorElement constructor =
+        ElementFactory.constructorElement2(classA, constructorName);
+    classA.constructors = <ConstructorElement>[constructor];
+    ConstructorName name = AstFactory.constructorName(
+        AstFactory.typeName(classA), constructorName);
+    _resolveNode(name);
+    expect(name.staticElement, same(constructor));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitConstructorName_unnamed() {
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    String constructorName = null;
+    ConstructorElement constructor =
+        ElementFactory.constructorElement2(classA, constructorName);
+    classA.constructors = <ConstructorElement>[constructor];
+    ConstructorName name = AstFactory.constructorName(
+        AstFactory.typeName(classA), constructorName);
+    _resolveNode(name);
+    expect(name.staticElement, same(constructor));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitContinueStatement_withLabel() {
+    // loop: while (true) {
+    //   continue loop;
+    // }
+    String label = "loop";
+    LabelElementImpl labelElement = new LabelElementImpl.forNode(
+        AstFactory.identifier3(label), false, false);
+    ContinueStatement continueStatement = AstFactory.continueStatement(label);
+    Expression condition = AstFactory.booleanLiteral(true);
+    WhileStatement whileStatement =
+        AstFactory.whileStatement(condition, continueStatement);
+    expect(_resolveContinue(continueStatement, labelElement, whileStatement),
+        same(labelElement));
+    expect(continueStatement.target, same(whileStatement));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitContinueStatement_withoutLabel() {
+    ContinueStatement statement = AstFactory.continueStatement();
+    _resolveStatement(statement, null, null);
+    _listener.assertNoErrors();
+  }
+
+  void test_visitEnumDeclaration() {
+    CompilationUnitElementImpl compilationUnitElement =
+        ElementFactory.compilationUnit('foo.dart');
+    EnumElementImpl enumElement =
+        ElementFactory.enumElement(_typeProvider, ('E'));
+    compilationUnitElement.enums = <ClassElement>[enumElement];
+    EnumDeclaration enumNode = AstFactory.enumDeclaration2('E', []);
+    Annotation annotationNode =
+        AstFactory.annotation(AstFactory.identifier3('a'));
+    annotationNode.element = ElementFactory.classElement2('A');
+    annotationNode.elementAnnotation =
+        new ElementAnnotationImpl(compilationUnitElement);
+    enumNode.metadata.add(annotationNode);
+    enumNode.name.staticElement = enumElement;
+    List<ElementAnnotation> metadata = <ElementAnnotation>[
+      annotationNode.elementAnnotation
+    ];
+    _resolveNode(enumNode);
+    expect(metadata[0].element, annotationNode.element);
+  }
+
+  void test_visitExportDirective_noCombinators() {
+    ExportDirective directive = AstFactory.exportDirective2(null);
+    directive.element = ElementFactory
+        .exportFor(ElementFactory.library(_definingLibrary.context, "lib"));
+    _resolveNode(directive);
+    _listener.assertNoErrors();
+  }
+
+  void test_visitFieldFormalParameter() {
+    String fieldName = "f";
+    InterfaceType intType = _typeProvider.intType;
+    FieldElementImpl fieldElement =
+        ElementFactory.fieldElement(fieldName, false, false, false, intType);
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    classA.fields = <FieldElement>[fieldElement];
+    FieldFormalParameter parameter =
+        AstFactory.fieldFormalParameter2(fieldName);
+    FieldFormalParameterElementImpl parameterElement =
+        ElementFactory.fieldFormalParameter(parameter.identifier);
+    parameterElement.field = fieldElement;
+    parameterElement.type = intType;
+    parameter.identifier.staticElement = parameterElement;
+    _resolveInClass(parameter, classA);
+    expect(parameter.element.type, same(intType));
+  }
+
+  void test_visitImportDirective_noCombinators_noPrefix() {
+    ImportDirective directive = AstFactory.importDirective3(null, null);
+    directive.element = ElementFactory.importFor(
+        ElementFactory.library(_definingLibrary.context, "lib"), null);
+    _resolveNode(directive);
+    _listener.assertNoErrors();
+  }
+
+  void test_visitImportDirective_noCombinators_prefix() {
+    String prefixName = "p";
+    ImportElement importElement = ElementFactory.importFor(
+        ElementFactory.library(_definingLibrary.context, "lib"),
+        ElementFactory.prefix(prefixName));
+    _definingLibrary.imports = <ImportElement>[importElement];
+    ImportDirective directive = AstFactory.importDirective3(null, prefixName);
+    directive.element = importElement;
+    _resolveNode(directive);
+    _listener.assertNoErrors();
+  }
+
+  void test_visitImportDirective_withCombinators() {
+    ShowCombinator combinator = AstFactory.showCombinator2(["A", "B", "C"]);
+    ImportDirective directive =
+        AstFactory.importDirective3(null, null, [combinator]);
+    LibraryElementImpl library =
+        ElementFactory.library(_definingLibrary.context, "lib");
+    TopLevelVariableElementImpl varA =
+        ElementFactory.topLevelVariableElement2("A");
+    TopLevelVariableElementImpl varB =
+        ElementFactory.topLevelVariableElement2("B");
+    TopLevelVariableElementImpl varC =
+        ElementFactory.topLevelVariableElement2("C");
+    CompilationUnitElementImpl unit =
+        library.definingCompilationUnit as CompilationUnitElementImpl;
+    unit.accessors = <PropertyAccessorElement>[
+      varA.getter,
+      varA.setter,
+      varB.getter,
+      varC.setter
+    ];
+    unit.topLevelVariables = <TopLevelVariableElement>[varA, varB, varC];
+    directive.element = ElementFactory.importFor(library, null);
+    _resolveNode(directive);
+    expect(combinator.shownNames[0].staticElement, same(varA));
+    expect(combinator.shownNames[1].staticElement, same(varB));
+    expect(combinator.shownNames[2].staticElement, same(varC));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitIndexExpression_get() {
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    InterfaceType intType = _typeProvider.intType;
+    MethodElement getter =
+        ElementFactory.methodElement("[]", intType, [intType]);
+    classA.methods = <MethodElement>[getter];
+    SimpleIdentifier array = AstFactory.identifier3("a");
+    array.staticType = classA.type;
+    IndexExpression expression =
+        AstFactory.indexExpression(array, AstFactory.identifier3("i"));
+    expect(_resolveIndexExpression(expression), same(getter));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitIndexExpression_set() {
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    InterfaceType intType = _typeProvider.intType;
+    MethodElement setter =
+        ElementFactory.methodElement("[]=", intType, [intType]);
+    classA.methods = <MethodElement>[setter];
+    SimpleIdentifier array = AstFactory.identifier3("a");
+    array.staticType = classA.type;
+    IndexExpression expression =
+        AstFactory.indexExpression(array, AstFactory.identifier3("i"));
+    AstFactory.assignmentExpression(
+        expression, TokenType.EQ, AstFactory.integer(0));
+    expect(_resolveIndexExpression(expression), same(setter));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitInstanceCreationExpression_named() {
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    String constructorName = "a";
+    ConstructorElement constructor =
+        ElementFactory.constructorElement2(classA, constructorName);
+    classA.constructors = <ConstructorElement>[constructor];
+    ConstructorName name = AstFactory.constructorName(
+        AstFactory.typeName(classA), constructorName);
+    name.staticElement = constructor;
+    InstanceCreationExpression creation =
+        AstFactory.instanceCreationExpression(Keyword.NEW, name);
+    _resolveNode(creation);
+    expect(creation.staticElement, same(constructor));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitInstanceCreationExpression_unnamed() {
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    String constructorName = null;
+    ConstructorElement constructor =
+        ElementFactory.constructorElement2(classA, constructorName);
+    classA.constructors = <ConstructorElement>[constructor];
+    ConstructorName name = AstFactory.constructorName(
+        AstFactory.typeName(classA), constructorName);
+    name.staticElement = constructor;
+    InstanceCreationExpression creation =
+        AstFactory.instanceCreationExpression(Keyword.NEW, name);
+    _resolveNode(creation);
+    expect(creation.staticElement, same(constructor));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitInstanceCreationExpression_unnamed_namedParameter() {
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    String constructorName = null;
+    ConstructorElementImpl constructor =
+        ElementFactory.constructorElement2(classA, constructorName);
+    String parameterName = "a";
+    ParameterElement parameter = ElementFactory.namedParameter(parameterName);
+    constructor.parameters = <ParameterElement>[parameter];
+    classA.constructors = <ConstructorElement>[constructor];
+    ConstructorName name = AstFactory.constructorName(
+        AstFactory.typeName(classA), constructorName);
+    name.staticElement = constructor;
+    InstanceCreationExpression creation = AstFactory.instanceCreationExpression(
+        Keyword.NEW,
+        name,
+        [AstFactory.namedExpression2(parameterName, AstFactory.integer(0))]);
+    _resolveNode(creation);
+    expect(creation.staticElement, same(constructor));
+    expect(
+        (creation.argumentList.arguments[0] as NamedExpression)
+            .name
+            .label
+            .staticElement,
+        same(parameter));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitMethodInvocation() {
+    InterfaceType numType = _typeProvider.numType;
+    SimpleIdentifier left = AstFactory.identifier3("i");
+    left.staticType = numType;
+    String methodName = "abs";
+    MethodInvocation invocation = AstFactory.methodInvocation(left, methodName);
+    _resolveNode(invocation);
+    expect(invocation.methodName.staticElement,
+        same(getMethod(numType, methodName)));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitMethodInvocation_namedParameter() {
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    String methodName = "m";
+    String parameterName = "p";
+    MethodElementImpl method = ElementFactory.methodElement(methodName, null);
+    ParameterElement parameter = ElementFactory.namedParameter(parameterName);
+    method.parameters = <ParameterElement>[parameter];
+    classA.methods = <MethodElement>[method];
+    SimpleIdentifier left = AstFactory.identifier3("i");
+    left.staticType = classA.type;
+    MethodInvocation invocation = AstFactory.methodInvocation(left, methodName,
+        [AstFactory.namedExpression2(parameterName, AstFactory.integer(0))]);
+    _resolveNode(invocation);
+    expect(invocation.methodName.staticElement, same(method));
+    expect(
+        (invocation.argumentList.arguments[0] as NamedExpression)
+            .name
+            .label
+            .staticElement,
+        same(parameter));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitPostfixExpression() {
+    InterfaceType numType = _typeProvider.numType;
+    SimpleIdentifier operand = AstFactory.identifier3("i");
+    operand.staticType = numType;
+    PostfixExpression expression =
+        AstFactory.postfixExpression(operand, TokenType.PLUS_PLUS);
+    _resolveNode(expression);
+    expect(expression.staticElement, getMethod(numType, "+"));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitPrefixedIdentifier_dynamic() {
+    DartType dynamicType = _typeProvider.dynamicType;
+    SimpleIdentifier target = AstFactory.identifier3("a");
+    VariableElementImpl variable = ElementFactory.localVariableElement(target);
+    variable.type = dynamicType;
+    target.staticElement = variable;
+    target.staticType = dynamicType;
+    PrefixedIdentifier identifier =
+        AstFactory.identifier(target, AstFactory.identifier3("b"));
+    _resolveNode(identifier);
+    expect(identifier.staticElement, isNull);
+    expect(identifier.identifier.staticElement, isNull);
+    _listener.assertNoErrors();
+  }
+
+  void test_visitPrefixedIdentifier_nonDynamic() {
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    String getterName = "b";
+    PropertyAccessorElement getter =
+        ElementFactory.getterElement(getterName, false, _typeProvider.intType);
+    classA.accessors = <PropertyAccessorElement>[getter];
+    SimpleIdentifier target = AstFactory.identifier3("a");
+    VariableElementImpl variable = ElementFactory.localVariableElement(target);
+    variable.type = classA.type;
+    target.staticElement = variable;
+    target.staticType = classA.type;
+    PrefixedIdentifier identifier =
+        AstFactory.identifier(target, AstFactory.identifier3(getterName));
+    _resolveNode(identifier);
+    expect(identifier.staticElement, same(getter));
+    expect(identifier.identifier.staticElement, same(getter));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitPrefixedIdentifier_staticClassMember_getter() {
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    // set accessors
+    String propName = "b";
+    PropertyAccessorElement getter =
+        ElementFactory.getterElement(propName, false, _typeProvider.intType);
+    PropertyAccessorElement setter =
+        ElementFactory.setterElement(propName, false, _typeProvider.intType);
+    classA.accessors = <PropertyAccessorElement>[getter, setter];
+    // prepare "A.m"
+    SimpleIdentifier target = AstFactory.identifier3("A");
+    target.staticElement = classA;
+    target.staticType = classA.type;
+    PrefixedIdentifier identifier =
+        AstFactory.identifier(target, AstFactory.identifier3(propName));
+    // resolve
+    _resolveNode(identifier);
+    expect(identifier.staticElement, same(getter));
+    expect(identifier.identifier.staticElement, same(getter));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitPrefixedIdentifier_staticClassMember_method() {
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    // set methods
+    String propName = "m";
+    MethodElement method =
+        ElementFactory.methodElement("m", _typeProvider.intType);
+    classA.methods = <MethodElement>[method];
+    // prepare "A.m"
+    SimpleIdentifier target = AstFactory.identifier3("A");
+    target.staticElement = classA;
+    target.staticType = classA.type;
+    PrefixedIdentifier identifier =
+        AstFactory.identifier(target, AstFactory.identifier3(propName));
+    AstFactory.assignmentExpression(
+        identifier, TokenType.EQ, AstFactory.nullLiteral());
+    // resolve
+    _resolveNode(identifier);
+    expect(identifier.staticElement, same(method));
+    expect(identifier.identifier.staticElement, same(method));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitPrefixedIdentifier_staticClassMember_setter() {
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    // set accessors
+    String propName = "b";
+    PropertyAccessorElement getter =
+        ElementFactory.getterElement(propName, false, _typeProvider.intType);
+    PropertyAccessorElement setter =
+        ElementFactory.setterElement(propName, false, _typeProvider.intType);
+    classA.accessors = <PropertyAccessorElement>[getter, setter];
+    // prepare "A.b = null"
+    SimpleIdentifier target = AstFactory.identifier3("A");
+    target.staticElement = classA;
+    target.staticType = classA.type;
+    PrefixedIdentifier identifier =
+        AstFactory.identifier(target, AstFactory.identifier3(propName));
+    AstFactory.assignmentExpression(
+        identifier, TokenType.EQ, AstFactory.nullLiteral());
+    // resolve
+    _resolveNode(identifier);
+    expect(identifier.staticElement, same(setter));
+    expect(identifier.identifier.staticElement, same(setter));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitPrefixExpression() {
+    InterfaceType numType = _typeProvider.numType;
+    SimpleIdentifier operand = AstFactory.identifier3("i");
+    operand.staticType = numType;
+    PrefixExpression expression =
+        AstFactory.prefixExpression(TokenType.PLUS_PLUS, operand);
+    _resolveNode(expression);
+    expect(expression.staticElement, getMethod(numType, "+"));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitPropertyAccess_getter_identifier() {
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    String getterName = "b";
+    PropertyAccessorElement getter =
+        ElementFactory.getterElement(getterName, false, _typeProvider.intType);
+    classA.accessors = <PropertyAccessorElement>[getter];
+    SimpleIdentifier target = AstFactory.identifier3("a");
+    target.staticType = classA.type;
+    PropertyAccess access = AstFactory.propertyAccess2(target, getterName);
+    _resolveNode(access);
+    expect(access.propertyName.staticElement, same(getter));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitPropertyAccess_getter_super() {
+    //
+    // class A {
+    //  int get b;
+    // }
+    // class B {
+    //   ... super.m ...
+    // }
+    //
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    String getterName = "b";
+    PropertyAccessorElement getter =
+        ElementFactory.getterElement(getterName, false, _typeProvider.intType);
+    classA.accessors = <PropertyAccessorElement>[getter];
+    SuperExpression target = AstFactory.superExpression();
+    target.staticType = ElementFactory.classElement("B", classA.type).type;
+    PropertyAccess access = AstFactory.propertyAccess2(target, getterName);
+    AstFactory.methodDeclaration2(
+        null,
+        null,
+        null,
+        null,
+        AstFactory.identifier3("m"),
+        AstFactory.formalParameterList(),
+        AstFactory.expressionFunctionBody(access));
+    _resolveNode(access);
+    expect(access.propertyName.staticElement, same(getter));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitPropertyAccess_setter_this() {
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    String setterName = "b";
+    PropertyAccessorElement setter =
+        ElementFactory.setterElement(setterName, false, _typeProvider.intType);
+    classA.accessors = <PropertyAccessorElement>[setter];
+    ThisExpression target = AstFactory.thisExpression();
+    target.staticType = classA.type;
+    PropertyAccess access = AstFactory.propertyAccess2(target, setterName);
+    AstFactory.assignmentExpression(
+        access, TokenType.EQ, AstFactory.integer(0));
+    _resolveNode(access);
+    expect(access.propertyName.staticElement, same(setter));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitSimpleIdentifier_classScope() {
+    InterfaceType doubleType = _typeProvider.doubleType;
+    String fieldName = "NAN";
+    SimpleIdentifier node = AstFactory.identifier3(fieldName);
+    _resolveInClass(node, doubleType.element);
+    expect(node.staticElement, getGetter(doubleType, fieldName));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitSimpleIdentifier_dynamic() {
+    SimpleIdentifier node = AstFactory.identifier3("dynamic");
+    _resolveIdentifier(node);
+    expect(node.staticElement, same(_typeProvider.dynamicType.element));
+    expect(node.staticType, same(_typeProvider.typeType));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitSimpleIdentifier_lexicalScope() {
+    SimpleIdentifier node = AstFactory.identifier3("i");
+    VariableElementImpl element = ElementFactory.localVariableElement(node);
+    expect(_resolveIdentifier(node, [element]), same(element));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitSimpleIdentifier_lexicalScope_field_setter() {
+    InterfaceType intType = _typeProvider.intType;
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    String fieldName = "a";
+    FieldElement field =
+        ElementFactory.fieldElement(fieldName, false, false, false, intType);
+    classA.fields = <FieldElement>[field];
+    classA.accessors = <PropertyAccessorElement>[field.getter, field.setter];
+    SimpleIdentifier node = AstFactory.identifier3(fieldName);
+    AstFactory.assignmentExpression(node, TokenType.EQ, AstFactory.integer(0));
+    _resolveInClass(node, classA);
+    Element element = node.staticElement;
+    EngineTestCase.assertInstanceOf((obj) => obj is PropertyAccessorElement,
+        PropertyAccessorElement, element);
+    expect((element as PropertyAccessorElement).isSetter, isTrue);
+    _listener.assertNoErrors();
+  }
+
+  void test_visitSuperConstructorInvocation() {
+    ClassElementImpl superclass = ElementFactory.classElement2("A");
+    ConstructorElementImpl superConstructor =
+        ElementFactory.constructorElement2(superclass, null);
+    superclass.constructors = <ConstructorElement>[superConstructor];
+    ClassElementImpl subclass =
+        ElementFactory.classElement("B", superclass.type);
+    ConstructorElementImpl subConstructor =
+        ElementFactory.constructorElement2(subclass, null);
+    subclass.constructors = <ConstructorElement>[subConstructor];
+    SuperConstructorInvocation invocation =
+        AstFactory.superConstructorInvocation();
+    AstFactory.classDeclaration(null, 'C', null, null, null, null, [
+      AstFactory.constructorDeclaration(null, 'C', null, [invocation])
+    ]);
+    _resolveInClass(invocation, subclass);
+    expect(invocation.staticElement, superConstructor);
+    _listener.assertNoErrors();
+  }
+
+  void test_visitSuperConstructorInvocation_namedParameter() {
+    ClassElementImpl superclass = ElementFactory.classElement2("A");
+    ConstructorElementImpl superConstructor =
+        ElementFactory.constructorElement2(superclass, null);
+    String parameterName = "p";
+    ParameterElement parameter = ElementFactory.namedParameter(parameterName);
+    superConstructor.parameters = <ParameterElement>[parameter];
+    superclass.constructors = <ConstructorElement>[superConstructor];
+    ClassElementImpl subclass =
+        ElementFactory.classElement("B", superclass.type);
+    ConstructorElementImpl subConstructor =
+        ElementFactory.constructorElement2(subclass, null);
+    subclass.constructors = <ConstructorElement>[subConstructor];
+    SuperConstructorInvocation invocation = AstFactory
+        .superConstructorInvocation([
+      AstFactory.namedExpression2(parameterName, AstFactory.integer(0))
+    ]);
+    AstFactory.classDeclaration(null, 'C', null, null, null, null, [
+      AstFactory.constructorDeclaration(null, 'C', null, [invocation])
+    ]);
+    _resolveInClass(invocation, subclass);
+    expect(invocation.staticElement, superConstructor);
+    expect(
+        (invocation.argumentList.arguments[0] as NamedExpression)
+            .name
+            .label
+            .staticElement,
+        same(parameter));
+    _listener.assertNoErrors();
+  }
+
+  /**
+   * Create and return the resolver used by the tests.
+   */
+  ElementResolver _createResolver() {
+    MemoryResourceProvider resourceProvider = new MemoryResourceProvider();
+    InternalAnalysisContext context = AnalysisContextFactory.contextWithCore(
+        resourceProvider: resourceProvider);
+    Source source = new FileSource(resourceProvider.getFile("/test.dart"));
+    CompilationUnitElementImpl unit =
+        new CompilationUnitElementImpl("test.dart");
+    unit.librarySource = unit.source = source;
+    _definingLibrary = ElementFactory.library(context, "test");
+    _definingLibrary.definingCompilationUnit = unit;
+    _visitor = new ResolverVisitor(
+        _definingLibrary, source, _typeProvider, _listener,
+        nameScope: new LibraryScope(_definingLibrary));
+    return _visitor.elementResolver;
+  }
+
+  /**
+   * Return the element associated with the label of [statement] after the
+   * resolver has resolved it.  [labelElement] is the label element to be
+   * defined in the statement's label scope, and [labelTarget] is the statement
+   * the label resolves to.
+   */
+  Element _resolveBreak(BreakStatement statement, LabelElementImpl labelElement,
+      Statement labelTarget) {
+    _resolveStatement(statement, labelElement, labelTarget);
+    return statement.label.staticElement;
+  }
+
+  /**
+   * Return the element associated with the label [statement] after the
+   * resolver has resolved it.  [labelElement] is the label element to be
+   * defined in the statement's label scope, and [labelTarget] is the AST node
+   * the label resolves to.
+   *
+   * @param statement the statement to be resolved
+   * @param labelElement the label element to be defined in the statement's label scope
+   * @return the element to which the statement's label was resolved
+   */
+  Element _resolveContinue(ContinueStatement statement,
+      LabelElementImpl labelElement, AstNode labelTarget) {
+    _resolveStatement(statement, labelElement, labelTarget);
+    return statement.label.staticElement;
+  }
+
+  /**
+   * Return the element associated with the given identifier after the resolver has resolved the
+   * identifier.
+   *
+   * @param node the expression to be resolved
+   * @param definedElements the elements that are to be defined in the scope in which the element is
+   *          being resolved
+   * @return the element to which the expression was resolved
+   */
+  Element _resolveIdentifier(Identifier node, [List<Element> definedElements]) {
+    _resolveNode(node, definedElements);
+    return node.staticElement;
+  }
+
+  /**
+   * Return the element associated with the given identifier after the resolver has resolved the
+   * identifier.
+   *
+   * @param node the expression to be resolved
+   * @param enclosingClass the element representing the class enclosing the identifier
+   * @return the element to which the expression was resolved
+   */
+  void _resolveInClass(AstNode node, ClassElement enclosingClass) {
+    Scope outerScope = _visitor.nameScope;
+    try {
+      _visitor.enclosingClass = enclosingClass;
+      EnclosedScope innerScope = new ClassScope(
+          new TypeParameterScope(outerScope, enclosingClass), enclosingClass);
+      _visitor.nameScope = innerScope;
+      node.accept(_resolver);
+    } finally {
+      _visitor.enclosingClass = null;
+      _visitor.nameScope = outerScope;
+    }
+  }
+
+  /**
+   * Return the element associated with the given expression after the resolver has resolved the
+   * expression.
+   *
+   * @param node the expression to be resolved
+   * @param definedElements the elements that are to be defined in the scope in which the element is
+   *          being resolved
+   * @return the element to which the expression was resolved
+   */
+  Element _resolveIndexExpression(IndexExpression node,
+      [List<Element> definedElements]) {
+    _resolveNode(node, definedElements);
+    return node.staticElement;
+  }
+
+  /**
+   * Return the element associated with the given identifier after the resolver has resolved the
+   * identifier.
+   *
+   * @param node the expression to be resolved
+   * @param definedElements the elements that are to be defined in the scope in which the element is
+   *          being resolved
+   * @return the element to which the expression was resolved
+   */
+  void _resolveNode(AstNode node, [List<Element> definedElements]) {
+    Scope outerScope = _visitor.nameScope;
+    try {
+      EnclosedScope innerScope = new EnclosedScope(outerScope);
+      if (definedElements != null) {
+        for (Element element in definedElements) {
+          innerScope.define(element);
+        }
+      }
+      _visitor.nameScope = innerScope;
+      node.accept(_resolver);
+    } finally {
+      _visitor.nameScope = outerScope;
+    }
+  }
+
+  /**
+   * Return the element associated with the label of the given statement after the resolver has
+   * resolved the statement.
+   *
+   * @param statement the statement to be resolved
+   * @param labelElement the label element to be defined in the statement's label scope
+   * @return the element to which the statement's label was resolved
+   */
+  void _resolveStatement(
+      Statement statement, LabelElementImpl labelElement, AstNode labelTarget) {
+    LabelScope outerScope = _visitor.labelScope;
+    try {
+      LabelScope innerScope;
+      if (labelElement == null) {
+        innerScope = outerScope;
+      } else {
+        innerScope = new LabelScope(
+            outerScope, labelElement.name, labelTarget, labelElement);
+      }
+      _visitor.labelScope = innerScope;
+      statement.accept(_resolver);
+    } finally {
+      _visitor.labelScope = outerScope;
+    }
+  }
+}