Awesome

CodeGenerator

This is a small .NET Core library that enables easy C# code generation based on Classes and its elements.<br> It has ability to create ClassModels, specify their Members (Constructor, Field, Property, Method) including Attributes and Parameters and write it to .cs files.<br> Defining namespace and using Directives is supported as well.<br> Library can also generate Enums and Interfaces, and create NestedClasses inside parent class.

How to use it

1. Install nuget package (latest version 1.0.2) 'Install-Package CsCodeGenerator'
2. Following is first example of ComplexNumber class and then creating its ClassModel for writing to Complex.cs<br>

Class we want to generate:

using System;
using System.ComponentModel;

namespace CsCodeGenerator.Tests
{
    [Description("Some class info")]
    public partial class ComplexNumber : SomeBaseClass, NumbericInterface
    {
        protected const double PI = 3.14;
        private string remark;

        public ComplexNumber() { }

        public ComplexNumber(double real, double imaginary = 0)
        {
            Real = real;
            Imaginary = imaginary;
        }

        public static string DefaultFormat { get; } = "a + b * i";

        public double Real { get; set; }

        public double Imaginary { get; set; }

        public virtual string Remark
        {
            get { return remark; }
            set { remark = value; }
        }

        public double Modul()
        {
            return Math.Sqrt(Real * Real + Imaginary * Imaginary);
        }

        public ComplexNumber Add(ComplexNumber input)
        {
            ComplexNumber result = new ComplexNumber();
            result.Real = Real + input.Real;
            result.Imaginary = Imaginary + input.Imaginary;
            return result;
        }

        // example of 2 KeyWords(new and virtual), usually here would be just virtual
        public new virtual string ToString()
        {
            return $"({Real:0.00}, {Imaginary:0.00})";
        }
    }
}

Code to do it:

var usingDirectives = new List<string>
{
    "using System;",
    "using System.ComponentModel;"
};
string fileNameSpace = $"{Util.Namespace} CsCodeGenerator.Tests";
string complexNumberText = "ComplexNumber";

ClassModel complexNumberClass = new ClassModel(complexNumberText);
complexNumberClass.SingleKeyWord = KeyWord.Partial; //or: complexNumberClass.KeyWords.Add(KeyWord.Partial);
complexNumberClass.BaseClass =  "SomeBaseClass";
complexNumberClass.Interfaces.Add("NumbericInterface)";

var descriptionAttribute = new AttributeModel("Description")
{
    SingleParameter = new Parameter(@"""Some class info""")
};
complexNumberClass.AddAttribute(descriptionAttribute);

complexNumberClass.DefaultConstructor.IsVisible = true;

Constructor secondConstructor = new Constructor(complexNumberClass.Name);
secondConstructor.Parameters.Add(new Parameter(BuiltInDataType.Double, "real"));
secondConstructor.Parameters.Add(new Parameter(BuiltInDataType.Double, "imaginary") { Value = "0" });
secondConstructor.BodyLines.Add("Real = real;");
secondConstructor.BodyLines.Add("Imaginary = imaginary;");
complexNumberClass.Constructors.Add(secondConstructor);

var fields = new Field[]
{
    new Field(BuiltInDataType.Double, "PI") { SingleKeyWord = KeyWord.Const, DefaultValue = "3.14" },
    new Field(BuiltInDataType.String, "remark") { AccessModifier = AccessModifier.Private },
}.ToDictionary(a => a.Name, a => a);

var properties = new Property[]
{
    new Property(BuiltInDataType.String, "DefaultFormat")
    {
        SingleKeyWord = KeyWord.Static,
        IsGetOnly = true,
        DefaultValue = @"""a + b * i"""
    },
    new Property(BuiltInDataType.Double, "Real"),
    new Property(BuiltInDataType.Double, "Imaginary"),
    new Property(BuiltInDataType.String, "Remark")
    {
        SingleKeyWord = KeyWord.Virtual,
        IsAutoImplemented = false,
        GetterBody = "remark",
        SetterBody = "remark = value"

    },
}.ToDictionary(a => a.Name, a => a);

var methods = new Method[]
{
    new Method(BuiltInDataType.Double, "Modul")
    {
        BodyLines = new List<string> { "return Math.Sqrt(Real * Real + Imaginary * Imaginary);" }
    },
    new Method(complexNumberText, "Add")
    {
        Parameters = new List<Parameter> { new Parameter("ComplexNumber", "input") },
        BodyLines = new List<string>
        {
            "ComplexNumber result = new ComplexNumber();",
            "result.Real = Real + input.Real;",
            "result.Imaginary = Imaginary + input.Imaginary;",
            "return result;"
        }
    },
    new Method(BuiltInDataType.String, "ToString")
    {
        Comment = "example of 2 KeyWords(new and virtual), usually here would be just virtual",
        KeyWords = new List<KeyWord> { KeyWord.New, KeyWord.Virtual },
        BodyLines = new List<string> { "return $\"({Real:0.00}, {Imaginary:0.00})\";" }
    }
}.ToDictionary(a => a.Name, a => a);

complexNumberClass.Fields = fields;
complexNumberClass.Properties = properties;
complexNumberClass.Methods = methods;

FileModel complexNumberFile = new FileModel(complexNumberText);
complexNumberFile.LoadUsingDirectives(usingDirectives);
complexNumberFile.Namespace = fileNameSpace;
complexNumberFile.Classes.Add(complexNumberClass.Name, complexNumberClass);

CsGenerator csGenerator = new CsGenerator();
csGenerator.Files.Add(complexNumberFile.Name, complexNumberFile);
csGenerator.CreateFiles(); //Console.Write(complexNumberFile); 

GeneratorModel Composition Structure:

CsGenerator
|
|---Files
	|
	|---Enums
	|
	|---Classes
		|
		|---Fields
		|
		|---Constructors (DefaultConstructor first)
		|	|---Attributes
		|	|	|--- Parameters
		|	|
		|	|---Parameters
		|
		|---Properties
		|	|---Attributes
		|	|	|--- Parameters
		|	|
		|	|---Parameters
		|
		|---Methods
		|	|---Attributes
		|	|	|--- Parameters
		|	|
		|	|---Parameters
		|
		|---NestedClasses (recursively)
			|--- ...