Mapping Generator

Branch	Status
Master
Develop

"AutoMapper" like, Roslyn based, code fix provider that allows to generate mapping code in design time.

You can download it as Visual Studio Extension from Visual Studio Marketplace.

Motivation

The reasons behind why I don't use AutoMapper

Further Development

If you find this extension useful (you feel it helps you on the daily basis) you can support further development by buying me a coffee (it's simple, just click the button below). Sometimes it's hard to stay awake till midnight implementing new features, coffee helps me with that. . I really appreciate your support in any form.

Contributing

Before you start any contributing work, please read the contribution guidline

Supported IDE

VisualStudio.

Install as VSIX from Market place or as a NuGet package. Verify your Roslyn integration option in case you are using R#.

JetBrains Rider

Install as a NuGet package

VSCode

Install as a NuGet package or use this instruction to install from VSIX

Using along with Resharper

If you are not able to open Roslyn refactoring menu (ctr + .) please verify your Resharper settings related to Visual Studio Integration or Visual Studio code analysis (depends on the R# version). For more information please check #50

Main features

Generate mapping method body

Pure mapping method

Non-void method that takes single parameter

public UserDTO Map(UserEntity entity)
{
    
}

Updating method

Void method that takes two parameters

public void Update(UserDTO source, UserEntity target)
{
    
}

Mapping Constructor

Constructor method that takes single complex parameter

public UserDTO(UserEntity user)
{
    
}

Constructor method that takes more than one parameter

public UserDTO(string firstName, string lastName, int age, int cash)
{
}

Updating member method

Void member method that takes single parameter

public void UpdateWith(UserEntity en)
{
    
}

Void member method with more than one parameter

public void Update(string firstName, string lastName, int age)
{
}

Generate inline code for fixing Compiler Errors:

CS0029 Cannot implicitly convert type 'type' to 'type'

CS0266 Cannot implicitly convert type 'type1' to 'type2'. An explicit conversion exists (are you missing a cast?)

CS7036 There is no argument given that corresponds to the required formal parameter

Other mappings

• Complete empty initialization block

• Complete empty initialization block in lambda expression Expression<Func<T,T2>> = (T) => new T2{}

• Provide local accessible variables as parameters for method and constructor invocation

• Create missing mapping lambda
  

• Generate ICloneable interface implementation

Object scaffolding

Mapping rules

• Mapping Property-To-Property

  target.FirstName = source.FirstName;
  target.LastName = source.LastName;

• Mapping Method Call-To-Property

  target.Total = source.GetTotal()

• Flattening with sub-property

  target.UnitId = source.Unit.Id

• Mapping complex property

   target.MainAddress = new AddressDTO(){
  	BuildingNo = source.MainAddress.BuildingNo,
  	City = source.MainAddress.City,
  	FlatNo = source.MainAddress.FlatNo,
  	Street = source.MainAddress.Street,
  	ZipCode = source.MainAddress.ZipCode
  };

• Mapping collections

  target.Addresses = source.Addresses.Select(sourceAddresse => new AddressDTO(){
    BuildingNo = sourceAddresse.BuildingNo,
    City = sourceAddresse.City,
    FlatNo = sourceAddresse.FlatNo,
    Street = sourceAddresse.Street,
    ZipCode = sourceAddresse.ZipCode
  }).ToList().AsReadOnly();

• Unwrapping wrappers

  customerEntity.Kind = cutomerDTO.Kind.Selected;

    public enum CustomerKind
    {
        Regular,
        Premium
    }
  
    public class Dropdown<T>
    {
        public List<T> AllOptions { get; set; }
  
        public T Selected { get; set; }
    }
  
    public class CustomerDTO
    {
        public string Name { get; set; }
        public Dropdown<CustomerKind> Kind { get; set; }
    }
  
    public class UserEntity
    {
        public string Name { get; set; }
        public CustomerKind Kind { get; set; }
    }

• Using existing direct mapping constructor

  target.MainAddress = new AddressDTO(source.MainAddress);

• using existing multi-parameter constuctor

  this.User =  new UserDTO(firstName: entity.FirstName, lastName: entity.LastName, age: entity.Age);