Code clean-up

pkg/analyzer/lib/src/generated/error_verifier.dart

 // Copyright (c) 2014, 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.src.generated.error_verifier;
 
 import 'dart:collection';
 import "dart:math" as math;
 
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/token.dart';
 import 'package:analyzer/dart/ast/visitor.dart';
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/dart/element/type.dart';
 import 'package:analyzer/dart/element/visitor.dart';
-import 'package:analyzer/src/dart/ast/token.dart';
 import 'package:analyzer/src/dart/ast/utilities.dart';
 import 'package:analyzer/src/dart/element/element.dart';
 import 'package:analyzer/src/dart/element/member.dart';
 import 'package:analyzer/src/dart/element/type.dart';
 import 'package:analyzer/src/dart/resolver/inheritance_manager.dart';
 import 'package:analyzer/src/generated/constant.dart';
 import 'package:analyzer/src/generated/element_resolver.dart';
 import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer/src/generated/error.dart';
 import 'package:analyzer/src/generated/java_engine.dart';
@@ skipping 5670 matching lines @@
     for (Expression expression in args.arguments) {
       if (expression is NamedExpression) {
         if (expression.name.label.name == name) {
           return true;
         }
       }
     }
     return false;
   }
 
-  bool _expressionIsAssignable(
-      Expression expression, DartType expectedStaticType) {
-    return _expressionIsAssignableAtType(
-        expression, getStaticType(expression), expectedStaticType);
-  }
-
   bool _expressionIsAssignableAtType(Expression expression,
       DartType actualStaticType, DartType expectedStaticType) {
     bool concrete =
         _options.strongMode && StaticInfo.isKnownFunction(expression);
     if (concrete) {
       actualStaticType =
           _typeSystem.typeToConcreteType(_typeProvider, actualStaticType);
       // TODO(leafp): Move the Downcast functionality here.
       // TODO(leafp): Support strict downcasts
     }
@@ skipping 452 matching lines @@
 class _InvocationCollector extends RecursiveAstVisitor {
   final List<String> superCalls = <String>[];
 
   @override
   visitMethodInvocation(MethodInvocation node) {
     if (node.target is SuperExpression) {
       superCalls.add(node.methodName.name);
     }
   }
 }