Remove code duplication

pkg/analysis_server/lib/src/services/completion/dart/label_contributor.dart

 // Copyright (c) 2015, 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 services.completion.contributor.dart.label;
 
 import 'dart:async';
 
 import 'package:analysis_server/plugin/protocol/protocol.dart' as protocol
-    show Element, ElementKind;
+    show ElementKind;
+import 'package:analysis_server/src/protocol_server.dart'
+    show CompletionSuggestion, CompletionSuggestionKind;
 import 'package:analysis_server/src/provisional/completion/dart/completion_dart.dart';
 import 'package:analysis_server/src/services/completion/dart/completion_manager.dart'
     show DartCompletionRequestImpl;
 import 'package:analysis_server/src/services/completion/dart/local_declaration_visitor.dart'
     show LocalDeclarationVisitor;
 import 'package:analysis_server/src/services/completion/dart/optype.dart';
+import 'package:analysis_server/src/services/completion/dart/utilities.dart';
 import 'package:analyzer/dart/ast/ast.dart';
-import 'package:analyzer/dart/ast/standard_ast_factory.dart';
-import 'package:analyzer/dart/ast/token.dart';
-import 'package:analyzer/src/dart/ast/token.dart';
-import 'package:analyzer/src/generated/source.dart';
-
-import '../../../protocol_server.dart'
-    show CompletionSuggestion, CompletionSuggestionKind, Location;
-
-const DYNAMIC = 'dynamic';
-
-final TypeName NO_RETURN_TYPE = astFactory.typeName(
-    astFactory.simpleIdentifier(new StringToken(TokenType.IDENTIFIER, '', 0)),
-    null);
-
-/**
-* Create a new protocol Element for inclusion in a completion suggestion.
-*/
-protocol.Element createLocalElement(
-    Source source, protocol.ElementKind kind, SimpleIdentifier id,
-    {String parameters,
-    TypeName returnType,
-    bool isAbstract: false,
-    bool isDeprecated: false}) {
-  String name;
-  Location location;
-  if (id != null) {
-    name = id.name;
-    // TODO(danrubel) use lineInfo to determine startLine and startColumn
-    location = new Location(source.fullName, id.offset, id.length, 0, 0);
-  } else {
-    name = '';
-    location = new Location(source.fullName, -1, 0, 1, 0);
-  }
-  int flags = protocol.Element.makeFlags(
-      isAbstract: isAbstract,
-      isDeprecated: isDeprecated,
-      isPrivate: Identifier.isPrivateName(name));
-  return new protocol.Element(kind, name, flags,
-      location: location,
-      parameters: parameters,
-      returnType: nameForType(returnType));
-}
-
-/**
-* Create a new suggestion for the given field.
-* Return the new suggestion or `null` if it could not be created.
-*/
-CompletionSuggestion createLocalFieldSuggestion(
-    Source source, FieldDeclaration fieldDecl, VariableDeclaration varDecl) {
-  bool deprecated = isDeprecated(fieldDecl) || isDeprecated(varDecl);
-  TypeName type = fieldDecl.fields.type;
-  return createLocalSuggestion(
-      varDecl.name, deprecated, DART_RELEVANCE_LOCAL_FIELD, type,
-      classDecl: fieldDecl.parent,
-      element: createLocalElement(
-          source, protocol.ElementKind.FIELD, varDecl.name,
-          returnType: type, isDeprecated: deprecated));
-}
-
-/**
-* Create a new suggestion based upon the given information.
-* Return the new suggestion or `null` if it could not be created.
-*/
-CompletionSuggestion createLocalSuggestion(SimpleIdentifier id,
-    bool isDeprecated, int defaultRelevance, TypeName returnType,
-    {ClassDeclaration classDecl, protocol.Element element}) {
-  if (id == null) {
-    return null;
-  }
-  String completion = id.name;
-  if (completion == null || completion.length <= 0 || completion == '_') {
-    return null;
-  }
-  CompletionSuggestion suggestion = new CompletionSuggestion(
-      CompletionSuggestionKind.INVOCATION,
-      isDeprecated ? DART_RELEVANCE_LOW : defaultRelevance,
-      completion,
-      completion.length,
-      0,
-      isDeprecated,
-      false,
-      returnType: nameForType(returnType),
-      element: element);
-  if (classDecl != null) {
-    SimpleIdentifier classId = classDecl.name;
-    if (classId != null) {
-      String className = classId.name;
-      if (className != null && className.length > 0) {
-        suggestion.declaringType = className;
-      }
-    }
-  }
-  return suggestion;
-}
-
-/**
-* Return `true` if the @deprecated annotation is present
-*/
-bool isDeprecated(AnnotatedNode node) {
-  if (node != null) {
-    NodeList<Annotation> metadata = node.metadata;
-    if (metadata != null) {
-      return metadata.any((Annotation a) {
-        return a.name is SimpleIdentifier && a.name.name == 'deprecated';
-      });
-    }
-  }
-  return false;
-}
-
-/**
-* Return the name for the given type.
-*/
-String nameForType(TypeName type) {
-  if (type == NO_RETURN_TYPE) {
-    return null;
-  }
-  if (type == null) {
-    return DYNAMIC;
-  }
-  Identifier id = type.name;
-  if (id == null) {
-    return DYNAMIC;
-  }
-  String name = id.name;
-  if (name == null || name.length <= 0) {
-    return DYNAMIC;
-  }
-  TypeArgumentList typeArgs = type.typeArguments;
-  if (typeArgs != null) {
-    //TODO (danrubel) include type arguments
-  }
-  return name;
-}
 
 /**
  * A contributor for calculating label suggestions.
  */
 class LabelContributor extends DartCompletionContributor {
   @override
   Future<List<CompletionSuggestion>> computeSuggestions(
       DartCompletionRequest request) async {
     OpType optype = (request as DartCompletionRequestImpl).opType;
 
@@ skipping 118 matching lines @@
             0,
             false,
             false);
         suggestions.add(suggestion);
         return suggestion;
       }
     }
     return null;
   }
 }