SingletonPattern.cs :  » Development » devAdvantage » AnticipatingMinds » KnowledgePack » Design » C# / CSharp Open Source

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C# / CSharp Open Source » Development » devAdvantage 
devAdvantage » AnticipatingMinds » KnowledgePack » Design » SingletonPattern.cs
using System;
using System.Collections;
using AnticipatingMinds.Genesis.KnowledgeManagement;
using AnticipatingMinds.Genesis.CodeDOM;
using AnticipatingMinds.Genesis.CodeDOM.Utilities;
using AnticipatingMinds.Genesis.Effectors.Utilities;
using AnticipatingMinds.Genesis.CodeParser;
using AnticipatingMinds.Genesis.AspNetDom;
using System.Threading;
using System.Text.RegularExpressions;

namespace AnticipatingMinds.KnowledgePack.Design{
  public class SingletonPatternTemplate : RuleTemplate
    {
    public SingletonPatternTemplate(string templateId, IDictionary templateProperties):base(templateId,templateProperties)
    {
    }

    public override string Name
    {
      get
      {
        return ResourceManager.GetLocalizedString("SingletonPatternTemplate|Name");
      }
    }
    
    public override string Description
    {
      get
      {
        return ResourceManager.GetLocalizedString("SingletonPatternTemplate|Description");
      }
    }

    public override Rule CreateRule(string ruleId, IDictionary ruleProperties)
    {
      return new SingletonPatternRule(ruleId, Id, ruleProperties);
    }  
  }

  public class SingletonPatternRule : Rule
  {
    internal SingletonPatternRule(string id, string templateId, IDictionary ruleProperties) : base(id,templateId,ruleProperties)
    {
    }
  
    public override Type[] TargetedCodeElements
    {
      get
      {
        return targetedCodeElements;
      }
    }
    private struct DefaultNames
    {
      public const string InstanceDefaultName = "instance";
      public const string GetInstanceDefaultName = "GetInstance";
      public const string LockDefaultName = "singletonLock";
    }
    private string instanceDefaultName = DefaultNames.InstanceDefaultName;
    private string GetInstanceDefaultName = DefaultNames.GetInstanceDefaultName;
    private string padlockDefaultName = DefaultNames.LockDefaultName;

    private class RuleData
    {
      public RuleViolationCollection violations = new RuleViolationCollection();
      public CodeTypeDeclaration TypeDeclaration = null;
      public bool ObjectCreateReference = false;
    }

    public override RuleViolation[] Analyze(object codeElement, System.Threading.ManualResetEvent cancelAnalysisEvent)
    {
      CodeTypeDeclaration typeDeclaration = codeElement as CodeTypeDeclaration;

      if(typeDeclaration == null || typeDeclaration is AnticipatingMinds.Genesis.AspNetDom.AspNetClassDeclaration)
        return emptyViolationsList;
      
      if(typeDeclaration == null || !IsCodeElementInRuleApplicabilityScope(typeDeclaration))
        return emptyViolationsList;
      RuleData ruleData = new RuleData();
      bool allStatic = false;
      ArrayList staticFields = new ArrayList();
      #region check if type is Singleton
      bool isExistsCurrectTypeField = false;
      bool isExistsCurrectTypeMethod = false;
      #endregion
      // check all member of type for static modifier
      int countConstructors = 0;
      bool withoutParametersConstructor = false;
      foreach(CodeTypeMemberDeclaration member in CodeTypeDeclarationUtils.GetTypeMembers(typeDeclaration))
      {
        if(member is CodeTypeConstructorDeclaration)
        {
          countConstructors++;
          if((member as CodeTypeConstructorDeclaration).InitializerArguments.Count == 0) withoutParametersConstructor = true;
        }
        if(member is CodeTypeFieldDeclaration)
        {
          if((member.Modifiers & CodeTypeMemberDeclaration.MemberDeclarationModifiers.Static) != 0)
          {
            if((member.Modifiers & CodeTypeMemberDeclaration.MemberDeclarationModifiers.Public) != 0)
            {
              allStatic = true;
              staticFields.Add(member);
            }
          }
          else
          {
            allStatic = false;
            break;
          }
        }
        if( member is CodeTypeFieldDeclaration
          && (member as CodeTypeFieldDeclaration).DeclarationType != null
          && (member as CodeTypeFieldDeclaration).DeclarationType.TypeInfo == typeDeclaration.TypeInfo
          && (member.Modifiers & CodeTypeMemberDeclaration.MemberDeclarationModifiers.Static) != 0
          && (member.Modifiers & CodeTypeMemberDeclaration.MemberDeclarationModifiers.Public) == 0
          )
        {
          // check for instance field
          isExistsCurrectTypeField = true;
        }
        if(member is CodeTypeMethodDeclaration
          && (member as CodeTypeMethodDeclaration).ReturnType != null
          && (member as CodeTypeMethodDeclaration).ReturnType.TypeInfo == typeDeclaration.TypeInfo
          && (member as CodeTypeMethodDeclaration).Parameters.Count == 0
          && (member.Modifiers & CodeTypeMemberDeclaration.MemberDeclarationModifiers.Static) != 0
          && (member.Modifiers & CodeTypeMemberDeclaration.MemberDeclarationModifiers.Public) != 0
          )
        {
          // check for GetInstance method
          isExistsCurrectTypeMethod = true;
        }
      }
      // if in type exists method-analog GetInstance && exists field-analog instance 
      if(isExistsCurrectTypeField && isExistsCurrectTypeMethod) return emptyViolationsList;

      bool insideOnlyStaticMember = true;
      #region Check all refernce inside static member 
      foreach(CodeTypeFieldDeclaration field in staticFields)
      {
        if(field == null) continue;
        foreach(CodeVariableDeclarationMember variable in field.DeclaredFields)
        {
          CodeExpressionCollection variableReference = CodeNamedReferenceExpressionUtils.FindReferenceTo(typeDeclaration, variable.Name);  
          foreach(CodeExpression variableExcepression in variableReference)
          {
            CodeTypeMemberDeclaration variableMember =  CodeTypeMemberUtils.GetContainingTypeMember(variableExcepression);
            CodeExpressionStatement variableStatement = CodeStatementUtils.GetElementStatement(variableExcepression) as CodeExpressionStatement;
            if(variableStatement == null) continue;
            if(variableStatement.Expression is CodeBinaryExpression
              && (variableStatement.Expression as CodeBinaryExpression).LeftOperand.Equals(variableExcepression)
              )
            {
              if((variableMember.Modifiers & CodeTypeMemberDeclaration.MemberDeclarationModifiers.Static) != 0)
              {
                insideOnlyStaticMember = (insideOnlyStaticMember) ? true : false;
              }
              else
              {
                insideOnlyStaticMember = false;
              }
            }
          }
        }
      }
      #endregion

      // check if exists create type object
      ruleData.TypeDeclaration = typeDeclaration;
      //WalkAllCompileUnits(typeDeclaration.CompileUnit,new CodeDomWalker.WalkerCallback(FindObjectCreateReference), ruleData);
      
      // if several constructor, this type not correctable to Singleton
      bool isConstructorCorrect = false;
      if(countConstructors == 0
        || (countConstructors == 1 && withoutParametersConstructor))
      {
        isConstructorCorrect = true;
      }
      if(allStatic && insideOnlyStaticMember && isConstructorCorrect)
      {
        CreateViolation(ruleData, typeDeclaration, true);
      }

      if(ruleData.violations.Count != 0)
        return ruleData.violations.ToArray();
      else
        return emptyViolationsList;
    }  
    private static CodeDomWalker.WalkerCallbackReturn FindObjectCreateReference(CodeElement codeElement,CodeDomWalker.CallBackNotificationType notification,CodeDomWalkerContext walkerContext,object applicationData)
    {
      if(notification != CodeDomWalker.CallBackNotificationType.OnElement)
      {
        return CodeDomWalker.WalkerCallbackReturn.Next;
      }
      RuleData data = applicationData as RuleData;
      if(codeElement is CodeObjectCreateExpression
        && (codeElement as CodeObjectCreateExpression).CreateType.TypeInfo == data.TypeDeclaration.TypeInfo
        )
      {
        CodeTypeMemberDeclaration memberDeclaration = CodeTypeMemberUtils.GetContainingTypeMember(codeElement);
        if(memberDeclaration.DeclaringType.TypeInfo != data.TypeDeclaration.TypeInfo)
        {
          data.ObjectCreateReference = true;
          return CodeDomWalker.WalkerCallbackReturn.Cancel;
        }
      }
      
      return CodeDomWalker.WalkerCallbackReturn.Next;
    }
    private void CreateViolation(RuleData ruleData, CodeTypeDeclaration typeDeclaration, bool isCorrectable)
    {
      RuleViolation violation = new RuleViolation(this, typeDeclaration);
      violation.Description = ResourceManager.GetLocalizedString("SingletonPatternTemplate|Violation", typeDeclaration.FullName);
      violation.Severity = RuleViolation.ViolationSeverity.Warning;
      if(isCorrectable)
      {
        RuleViolationCorrection violationCorrection;
        violationCorrection = violation.AddCorrection(ResourceManager.GetLocalizedString("SingletonPatternTemplate|Correction"), false, false);
        violationCorrection.CorrectionData["CodeTypeDeclaration"] = typeDeclaration;
      }
      ruleData.violations.Add(violation);
    }

    public override void Correct(RuleViolationCorrection[] requestedCorrections, AnticipatingMinds.Genesis.Effectors.CodeEffector codeEffector, System.Threading.ManualResetEvent cancelCorrectionEvent)
    {
      codeEffector.BeginCodeChanges("Convert type to Singleton pattern");
      foreach(RuleViolationCorrection requestedCorrection in requestedCorrections)
      {
        if(requestedCorrection.Violation.IsFixed)
          continue;
        instanceDefaultName = DefaultNames.InstanceDefaultName;
        GetInstanceDefaultName = DefaultNames.GetInstanceDefaultName;
        padlockDefaultName = DefaultNames.LockDefaultName;

        
        CodeTypeDeclaration typeDeclaration =  requestedCorrection.CorrectionData["CodeTypeDeclaration"] as CodeTypeDeclaration;
        // check for exists fields in type(instance, GetInstance, padlock)
        if(!CheckSingletionFieldsInType(typeDeclaration, ref this.instanceDefaultName))
        {
          continue;
        }
        if(!CheckSingletionFieldsInType(typeDeclaration,ref this.padlockDefaultName))
        {
          continue;
        }
        if(!CheckSingletionMethodInType(typeDeclaration))
        {
          continue;
        }
        TypeData data = new TypeData();
        data.GetInstanceMethodName = this.GetInstanceDefaultName;
        data.TypeDeclaration = typeDeclaration;
        data.codeEffector = codeEffector;

        ChangedStaticModifiers(typeDeclaration, codeEffector, data);
        #region Change Reference
        ChangeCurrentTypeReference(typeDeclaration, codeEffector, data);
        #endregion
        AddInstanceField(typeDeclaration, codeEffector);

        #region Create Private contstructor
        CreateEmptyPrivateConstructor(typeDeclaration, codeEffector);
        #endregion
        
        requestedCorrection.Violation.IsFixed = true;
      }
      try
      {
        codeEffector.CommitCodeChanges();
      }
      catch(Exception)
      {
        codeEffector.RollbackCodeChanges();
        throw;
      }
    }
    private bool CheckSingletionFieldsInType(CodeTypeDeclaration typeDeclaration,ref string fieldName)
    {
      string[] typeNames = CodeTypeDeclarationUtils.GetTypeMembersNames(typeDeclaration);
      if(Array.IndexOf(typeNames, fieldName) == -1 ) return true;
      else
      {
        SingletonRenameForm frm = new SingletonRenameForm();
        frm.defaultSuggestionTextBox.Text = "";
        frm.currentValueTextBox.Text = fieldName;
        if(frm.ShowDialog() == System.Windows.Forms.DialogResult.OK)
        {
          fieldName = frm.defaultSuggestionTextBox.Text;
          return CheckSingletionFieldsInType(typeDeclaration,ref fieldName);
        }
        else
        {
          return false;  
        }
      }
    }
    private bool CheckSingletionMethodInType(CodeTypeDeclaration typeDeclaration)
    {
      string[] typeNames = CodeTypeDeclarationUtils.GetTypeMembersNames(typeDeclaration);
      if(Array.IndexOf(typeNames, this.GetInstanceDefaultName) == -1 ) return true;

      foreach(CodeTypeMemberDeclaration member in CodeTypeDeclarationUtils.GetTypeMembers(typeDeclaration))
      {
        if(member is CodeTypeMethodDeclaration
          && (member as CodeTypeMethodDeclaration).Name == this.GetInstanceDefaultName
          && (member as CodeTypeMethodDeclaration).Parameters.Count == 0
          )
        {
          SingletonRenameForm frm = new SingletonRenameForm();
          frm.defaultSuggestionTextBox.Text = "";
          frm.currentValueTextBox.Text = this.GetInstanceDefaultName;
          if(frm.ShowDialog() == System.Windows.Forms.DialogResult.OK)
          {
            this.GetInstanceDefaultName = frm.defaultSuggestionTextBox.Text;
            return CheckSingletionMethodInType(typeDeclaration);
          }
          else
          {
            return false;  
          }

        }
      }
      return true;
    }
    private void CreateEmptyPrivateConstructor(CodeTypeDeclaration typeDeclaration, AnticipatingMinds.Genesis.Effectors.CodeEffector codeEffector)
    {
      bool existsConstructor = false;
      foreach(CodeTypeMemberDeclaration member in CodeTypeDeclarationUtils.GetTypeMembers(typeDeclaration))
      {
        if(member is CodeTypeConstructorDeclaration
          && (member as CodeTypeConstructorDeclaration).Parameters.Count == 0)
        {
          existsConstructor = true;
        }
      }      
      if(!existsConstructor)
      {
        CodeTypeConstructorDeclaration constructor = new CodeTypeConstructorDeclaration();
        constructor.Modifiers =  CodeTypeMemberDeclaration.MemberDeclarationModifiers.Private;
        constructor.Parent = typeDeclaration;

        CodeTypeMemberDeclarationCollection memberCollection = new CodeTypeMemberDeclarationCollection();
        memberCollection.AddRange(new CodeTypeMemberDeclaration[]{constructor});
        codeEffector.AddCodeElements(memberCollection, typeDeclaration, (typeDeclaration as CodeClassDeclaration).Members, 0);
        codeEffector.PerformCodeChanges();

      }
    }
    private void AddInstanceField(CodeTypeDeclaration typeDeclaration, AnticipatingMinds.Genesis.Effectors.CodeEffector codeEffector)
    {
      CodeTypeMemberDeclarationCollection memberCollection = new CodeTypeMemberDeclarationCollection();
      
      #region instance field 
      CodeTypeFieldDeclaration instanceField = new CodeTypeFieldDeclaration();
      instanceField.Modifiers = CodeTypeMemberDeclaration.MemberDeclarationModifiers.Static;
      instanceField.DeclarationType = new CodeTypeReference(typeDeclaration.Name);
      CodeVariableDeclarationMember instanceMember = new CodeVariableDeclarationMember(this.instanceDefaultName, new CodeNullReferenceExpression());
      instanceField.DeclaredFields.Add(instanceMember);
      #endregion
      
      #region padlock field 
      CodeTypeFieldDeclaration padlockField = new CodeTypeFieldDeclaration();
      padlockField.Modifiers = CodeTypeMemberDeclaration.MemberDeclarationModifiers.Static;
      padlockField.Modifiers |= CodeTypeMemberDeclaration.MemberDeclarationModifiers.ReadOnly;
      padlockField.DeclarationType = new CodeTypeReference("object");
      CodeVariableDeclarationMember padlockMember 
        = new CodeVariableDeclarationMember(this.padlockDefaultName, new CodeObjectCreateExpression(new CodeTypeReference("object")));
      padlockField.DeclaredFields.Add(padlockMember);
      #endregion
      
      #region GetInstance method
      CodeTypeMethodDeclaration instanceMethod = new CodeTypeMethodDeclaration();
      instanceMethod.Name = this.GetInstanceDefaultName;
      instanceMethod.Modifiers = CodeTypeMemberDeclaration.MemberDeclarationModifiers.Static;
      instanceMethod.Modifiers |= CodeTypeMemberDeclaration.MemberDeclarationModifiers.Public;
      instanceMethod.ReturnType = new CodeTypeReference(typeDeclaration.Name);
      instanceMethod.Statements = new CodeStatementBlock();
      
      string instanceContent = String.Format(@"if({0} == null){3}lock({1}){3} if ({0}==null) {0} = new {2}(); {4}{4}  return {0};", this.instanceDefaultName, this.padlockDefaultName, typeDeclaration.Name, "{", "}");
      AnticipatingMinds.Genesis.CodeParser.CSharpParser instanceContentParser = new AnticipatingMinds.Genesis.CodeParser.CSharpParser(instanceContent, typeDeclaration.CompileUnit.Assembly.AssemblyFileName, typeDeclaration.CompileUnit.Assembly);
      instanceMethod.Statements = instanceContentParser.ParseStatements(new ManualResetEvent(false));
      #endregion
      // add new members to type
      memberCollection.AddRange(new CodeTypeMemberDeclaration[]{instanceField, padlockField, instanceMethod});
      codeEffector.AddCodeElements(memberCollection, typeDeclaration, (typeDeclaration as CodeClassDeclaration).Members, 0);
      codeEffector.PerformCodeChanges();
    }
    private void ChangedStaticModifiers(CodeTypeDeclaration typeDeclaration, AnticipatingMinds.Genesis.Effectors.CodeEffector codeEffector, TypeData data)
    {
      CodeTypeMemberDeclarationCollection accessorListAll = new CodeTypeMemberDeclarationCollection();
      foreach(CodeTypeMemberDeclaration member in CodeTypeDeclarationUtils.GetTypeMembers(typeDeclaration))
      {
        bool changeMidifiers = false;
        if(member is CodeTypeConstructorDeclaration)
        {
          member.Modifiers &= ~CodeTypeMemberDeclaration.MemberDeclarationModifiers.Static;
          member.Modifiers &= ~CodeTypeMemberDeclaration.MemberDeclarationModifiers.Public;
          member.Modifiers |= CodeTypeMemberDeclaration.MemberDeclarationModifiers.Private;
          changeMidifiers = true;
        }
        else if(member is CodeTypeFieldDeclaration)
        {
          if((member.Modifiers & CodeTypeMemberDeclaration.MemberDeclarationModifiers.Public) != 0)
          {
            member.Modifiers &= ~CodeTypeMemberDeclaration.MemberDeclarationModifiers.Public;
            member.Modifiers |= CodeTypeMemberDeclaration.MemberDeclarationModifiers.Private;
            accessorListAll.AddRange(CreateAccessor(typeDeclaration, member as CodeTypeFieldDeclaration, codeEffector, data));
          }
          else
          {
            foreach(CodeVariableDeclarationMember variable in (member as CodeTypeFieldDeclaration).DeclaredFields)
              data.FieldAccessors.Add(variable, member);
          }
          member.Modifiers &= ~CodeTypeMemberDeclaration.MemberDeclarationModifiers.Static;
          changeMidifiers = true;
        }
        else
        {
          if((member.Modifiers & CodeTypeMemberDeclaration.MemberDeclarationModifiers.Static) != 0)
          {
            member.Modifiers &= ~CodeTypeMemberDeclaration.MemberDeclarationModifiers.Static;
            changeMidifiers = true;
          }
        }
        if(changeMidifiers)
          codeEffector.ChangeCodeElement(member, member.GetType().GetProperty("Modifiers"), member.Modifiers);
      }
      if(accessorListAll.Count != 0)
      {
        codeEffector.AddCodeElements(accessorListAll, typeDeclaration, (typeDeclaration as CodeClassDeclaration).Members, 0);
      }
      codeEffector.PerformCodeChanges();
    }
    private class TypeData
    {
      public Hashtable FieldAccessors = new Hashtable();
      public CodeTypeDeclaration TypeDeclaration =null;
      public string GetInstanceMethodName = "";
      public AnticipatingMinds.Genesis.Effectors.CodeEffector codeEffector;
    }
    private void ChangeCurrentTypeReference(CodeTypeDeclaration typeDeclaration, AnticipatingMinds.Genesis.Effectors.CodeEffector codeEffector, TypeData data)
    {  
      WalkAllCompileUnits(typeDeclaration.CompileUnit,new CodeDomWalker.WalkerCallback(ReplaceStaticReference), data);
    }
    private static CodeDomWalker.WalkerCallbackReturn ReplaceStaticReference(CodeElement codeElement,CodeDomWalker.CallBackNotificationType notification,CodeDomWalkerContext walkerContext,object applicationData)
    {
      if(notification != CodeDomWalker.CallBackNotificationType.OnElement)
      {
        return CodeDomWalker.WalkerCallbackReturn.Next;
      }
      if(!(codeElement is CodeNamedReferenceExpression) && !(codeElement is CodeObjectCreateExpression)) 
        return CodeDomWalker.WalkerCallbackReturn.Next; 
      
      TypeData data = applicationData as TypeData;
      
      #region Prepare GetInstance invoke
      CodeMethodReferenceExpression getInstance = new CodeMethodReferenceExpression();
      getInstance.TargetObject = new CodeTypeReferenceExpression(CodeTypeReferenceUtils.GetShortestTypeNameReference(codeElement ,data.TypeDeclaration));
      getInstance.Name = data.GetInstanceMethodName;
      CodeMethodInvokeExpression getInstanceInvoke = new CodeMethodInvokeExpression();
      getInstanceInvoke.MethodReferenceExpression = getInstance;
      #endregion
      if(codeElement is CodeFieldReferenceExpression
        && (codeElement as CodeFieldReferenceExpression).FieldInfo != null
        && (codeElement as CodeFieldReferenceExpression).FieldInfo.DeclaringTypeInfo == data.TypeDeclaration.TypeInfo
        )
      {
        CodeFieldReferenceExpression fieldReference = codeElement as CodeFieldReferenceExpression;
        #region Field Reference
        foreach(CodeVariableDeclarationMember variable in data.FieldAccessors.Keys)
        {
          CodeNamedReferenceExpression newNamedReference = null;
          if(data.FieldAccessors[variable] is CodeTypePropertyDeclaration
            && (data.FieldAccessors[variable] as CodeTypePropertyDeclaration).ReturnType.TypeInfo == fieldReference.ExpressionType
            && ((data.FieldAccessors[variable] as CodeTypePropertyDeclaration).Name == fieldReference.Name || variable.Name == fieldReference.Name)
            )
          {
            newNamedReference = new CodePropertyReferenceExpression(getInstanceInvoke , (data.FieldAccessors[variable] as CodeTypePropertyDeclaration).Name);
          }
          if (data.FieldAccessors[variable] is CodeTypeFieldDeclaration
              && fieldReference.FieldInfo != null
              && (data.FieldAccessors[variable] as CodeTypeFieldDeclaration).DeclaringType.TypeInfo == fieldReference.FieldInfo.DeclaringTypeInfo
              && variable.Name == fieldReference.Name
            )
          {
            newNamedReference = codeElement.Clone() as CodeNamedReferenceExpression;  
            newNamedReference.TargetObject = getInstanceInvoke;
          }
          if(newNamedReference != null)
          {
            data.codeEffector.ReplaceCodeElement(codeElement, newNamedReference);
            data.codeEffector.PerformCodeChanges();
          }
        }
        #endregion
      }
      // check other reference
      if((codeElement is CodeMethodReferenceExpression
        && (codeElement as CodeMethodReferenceExpression).MethodInfo != null
        && (codeElement as CodeMethodReferenceExpression).MethodInfo.DeclaringTypeInfo == data.TypeDeclaration.TypeInfo
        ) || (codeElement is CodePropertyReferenceExpression
        && (codeElement as CodePropertyReferenceExpression).PropertyInfo != null
        && (codeElement as CodePropertyReferenceExpression).PropertyInfo.DeclaringTypeInfo == data.TypeDeclaration.TypeInfo
        ) || (codeElement is CodeEventReferenceExpression
        && (codeElement as CodeEventReferenceExpression).EventInfo != null
        && (codeElement as CodeEventReferenceExpression).EventInfo.DeclaringTypeInfo == data.TypeDeclaration.TypeInfo
        )
      )
      {
        #region MethodReference
        CodeNamedReferenceExpression newNamedReference = codeElement.Clone() as CodeNamedReferenceExpression;
        newNamedReference.TargetObject = getInstanceInvoke;
        data.codeEffector.ReplaceCodeElement(codeElement, newNamedReference);
        data.codeEffector.PerformCodeChanges();
        #endregion
      }
      if( codeElement is CodeObjectCreateExpression 
        && (codeElement as CodeObjectCreateExpression).CreateType.TypeInfo == data.TypeDeclaration.TypeInfo
        )
      {
        data.codeEffector.ReplaceCodeElement(codeElement, getInstanceInvoke);
        data.codeEffector.PerformCodeChanges();
      }
      return CodeDomWalker.WalkerCallbackReturn.Next;
    }
    private CodeTypeMemberDeclarationCollection CreateAccessor(CodeTypeDeclaration typeDeclaration, CodeTypeFieldDeclaration member, AnticipatingMinds.Genesis.Effectors.CodeEffector codeEffector, TypeData data)
    {
      CodeTypeMemberDeclarationCollection accessorList = new CodeTypeMemberDeclarationCollection();
      foreach(CodeVariableDeclarationMember variable in member.DeclaredFields)
      {
        string propertyName; 
        string variableName; 
        CreatePropertyAndFieldNames(typeDeclaration, member, variable, out propertyName, out variableName);
        if(variable.Name != variableName)
        {
          codeEffector.ChangeCodeElement(variable, variable.GetType().GetProperty("Name"), variableName); 
          codeEffector.PerformCodeChanges();
        }
        
        CodeTypePropertyDeclaration accessor = new CodeTypePropertyDeclaration(propertyName);
        accessor.ReturnType = member.DeclarationType;
        accessor.Modifiers = CodeTypeMemberDeclaration.MemberDeclarationModifiers.Public;
        #region GetStatement
        accessor.GetAccessorStatements = new CodeStatementBlock();
        string getStatementContent = String.Format("return {0};", variableName);
        AnticipatingMinds.Genesis.CodeParser.CSharpParser getStatementContentParser = new AnticipatingMinds.Genesis.CodeParser.CSharpParser(getStatementContent, typeDeclaration.CompileUnit.Assembly.AssemblyFileName, typeDeclaration.CompileUnit.Assembly);
        accessor.GetAccessorStatements = getStatementContentParser.ParseStatements(new ManualResetEvent(false));
        #endregion

        #region SetStatement
        if((member.Modifiers & CodeTypeMemberDeclaration.MemberDeclarationModifiers.ReadOnly) == 0)
        {
          accessor.SetAccessorStatements = new CodeStatementBlock();
          string setStatementContent = String.Format("{0} = value;", variableName);
          AnticipatingMinds.Genesis.CodeParser.CSharpParser setStatementContentParser = new AnticipatingMinds.Genesis.CodeParser.CSharpParser(setStatementContent, typeDeclaration.CompileUnit.Assembly.AssemblyFileName, typeDeclaration.CompileUnit.Assembly);
          accessor.SetAccessorStatements = setStatementContentParser.ParseStatements(new ManualResetEvent(false));
        }
        #endregion
        accessorList.Add(accessor);
        
        data.FieldAccessors.Add(variable, accessor);
      }
      int indexAccessor = (typeDeclaration as CodeClassDeclaration).Members.IndexOf(member);
      return accessorList;
    }  
    // check and create right names for property and private field
    private void CreatePropertyAndFieldNames(CodeTypeDeclaration typeDeclaration, CodeTypeFieldDeclaration field, CodeVariableDeclarationMember member,out string propertyName,out string fieldName)
    {
      string[] typeNames = CodeTypeDeclarationUtils.GetTypeMembersNames(typeDeclaration);

      if(Regex.IsMatch(member.Name, "^[A-Z]") || Regex.IsMatch(member.Name, "^_"))
      {
        propertyName = member.Name;
        fieldName = member.Name.Trim().Substring(0, 1).ToLower()+ member.Name.Substring(1);
        while(Array.IndexOf(typeNames,fieldName) != -1) fieldName = "_"+fieldName;
      }
      else
      {
        propertyName = member.Name.Trim().Substring(0, 1).ToUpper()+ member.Name.Substring(1);
        while(Array.IndexOf(typeNames,propertyName) != -1) propertyName = "_" + propertyName;
        fieldName = member.Name;
      }
    }

    private static RuleViolation[] emptyViolationsList = new  RuleViolation[0];
    private Type[] targetedCodeElements = {typeof(CodeClassDeclaration)};
    private static Type[] applicableApplicabilityScopeTypes = {typeof(ClassApplicabilityScope),typeof(FileApplicabilityScope)};
    public override Type[] ApplicableApplicabilityScopeTypes
    {
      get
      {
        return applicableApplicabilityScopeTypes;
      }
    }
    #region Private Helper Functions
    private void WalkAllCompileUnits(CodeAssemblyFile startUnit,CodeDomWalker.WalkerCallback callback,object applicationData)
    {
      CodeAssemblyFileCollection compileUnits = new CodeAssemblyFileCollection();
      if(startUnit != null && startUnit.Assembly != null && startUnit.Assembly.Solution != null)
      {
        foreach(CodeAssembly codeAssembly in startUnit.Assembly.Solution.Assemblies)
          foreach(CodeAssemblyFile assemblyFile in codeAssembly.AssemblyFiles)
            compileUnits.Add(assemblyFile);
      }

      if(startUnit != null && startUnit.Assembly != null && startUnit.Assembly.Solution == null)
      {
        foreach(CodeAssemblyFile assemblyFile in startUnit.Assembly.AssemblyFiles)
          if(assemblyFile is CodeCompileUnit)
            compileUnits.Add(assemblyFile as CodeCompileUnit);
      }
      if(startUnit != null && startUnit.Assembly == null)
        compileUnits.Add(startUnit);
        

      foreach(CodeAssemblyFile compileUnit in compileUnits)
        CodeDomWalker.WalkCompileUnit(compileUnit,callback,applicationData);
    }
    #endregion
  }

}
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