Clean-up imports

pkg/analyzer/lib/src/generated/constant.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.constant;
 
 import 'dart:collection';
 
+import 'package:analyzer/dart/ast/ast.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/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/generated/ast.dart';
 import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer/src/generated/engine.dart'
     show AnalysisEngine, RecordingErrorListener;
 import 'package:analyzer/src/generated/error.dart';
 import 'package:analyzer/src/generated/java_core.dart';
 import 'package:analyzer/src/generated/resolver.dart' show TypeProvider;
 import 'package:analyzer/src/generated/scanner.dart' show Token, TokenType;
 import 'package:analyzer/src/generated/source.dart' show Source;
 import 'package:analyzer/src/generated/type_system.dart'
     show TypeSystem, TypeSystemImpl;
@@ skipping 2281 matching lines @@
     if (leftOperand != null && rightOperand != null) {
       try {
         return leftOperand.equalEqual(_typeProvider, rightOperand);
       } on EvaluationException catch (exception) {
         _errorReporter.reportErrorForNode(exception.errorCode, node);
       }
     }
     return null;
   }
 
-  DartObjectImpl questionQuestion(Expression node, DartObjectImpl leftOperand,
-      DartObjectImpl rightOperand) {
-    if (leftOperand != null && rightOperand != null) {
-      if (leftOperand.isNull) {
-        return rightOperand;
-      }
-      return leftOperand;
-    }
-    return null;
-  }
-
   DartObjectImpl greaterThan(BinaryExpression node, DartObjectImpl leftOperand,
       DartObjectImpl rightOperand) {
     if (leftOperand != null && rightOperand != null) {
       try {
         return leftOperand.greaterThan(_typeProvider, rightOperand);
       } on EvaluationException catch (exception) {
         _errorReporter.reportErrorForNode(exception.errorCode, node);
       }
     }
     return null;
@@ skipping 134 matching lines @@
     if (evaluationResult != null) {
       try {
         return evaluationResult.performToString(_typeProvider);
       } on EvaluationException catch (exception) {
         _errorReporter.reportErrorForNode(exception.errorCode, node);
       }
     }
     return null;
   }
 
+  DartObjectImpl questionQuestion(Expression node, DartObjectImpl leftOperand,
+      DartObjectImpl rightOperand) {
+    if (leftOperand != null && rightOperand != null) {
+      if (leftOperand.isNull) {
+        return rightOperand;
+      }
+      return leftOperand;
+    }
+    return null;
+  }
+
   DartObjectImpl remainder(BinaryExpression node, DartObjectImpl leftOperand,
       DartObjectImpl rightOperand) {
     if (leftOperand != null && rightOperand != null) {
       try {
         return leftOperand.remainder(_typeProvider, rightOperand);
       } on EvaluationException catch (exception) {
         _errorReporter.reportErrorForNode(exception.errorCode, node);
       }
     }
     return null;
@@ skipping 2976 matching lines @@
       return BoolState.from(_element == rightElement);
     } else if (rightOperand is DynamicState) {
       return BoolState.UNKNOWN_VALUE;
     }
     return BoolState.FALSE_STATE;
   }
 
   @override
   String toString() => _element == null ? "-unknown-" : _element.name;
 }