IConstructorDescription

IConstructorDescription description of constructor.

/// <summary>Constructor description</summary>
public interface IConstructorDescription : IAnnotable
{
    /// <summary>
    /// Describes record constructor method: 
    ///     <see cref="ConstructorInfo"/>
    ///     <see cref="MethodInfo"/>
    ///     <see cref="Delegate"/>
    ///     <![CDATA[IWriterBase]]> as <see cref="ValueType"/>
    ///     <![CDATA[EmitLine]]> (e.g. (OpCodes.Newobj, ci), (OpCodes.Initobj, ValueType) )
    ///     <![CDATA[IEnumerable<EmitLine>]]>.
    /// </summary>
    object Constructor { get; set; }
    /// <summary>Record type</summary>
    Type Type { get; set; }
    /// <summary>Parameters</summary>
    IParameterDescription[] Parameters { get; set; }
    /// <summary>Record which constructor is member of.</summary>
    IRecordDescription? Record { get; set; }
}

ConstructorDescriptor is the default implementation.

IConstructorDescription constructorDescription = new ConstructorDescription
{
    Constructor = null!,
    Type = typeof(MyClass),
    Parameters = new IParameterDescription[0],
    Annotations = new object[0],
    Record = null
}.SetReadOnly();

Extension methods can be used to set each field.

IConstructorDescription constructorDescription =
    new ConstructorDescription()
    .SetConstructor(null!)
    .SetType(typeof(MyClass))
    .SetParameters(new IParameterDescription[0])
    .SetAnnotations(new object[0])
    .SetRecord(null)
    .SetReadOnly();

.Clone() makes a copy.

IConstructionDescription clone = constructionDescription.Clone().SetReadOnly();

.Read() assigns constuctor description from ConstructorInfo, MethodInfo, Delegate, EmitLine, IEnumerable<EmitLine>. Note that MethodInfo can be static or non-static.

// Create delegate ctor
Func<int, MyClass> ctor = (int value) => new MyClass(value);
//
IRecordDescription recordDescription = new RecordDescription().Read(typeof(MyClass));
// Create constructor description from delegate
IConstructorDescription constructorDescription = new ConstructorDescription().SetRecord(recordDescription).Read(ctor);
// Create construction description
IConstructionDescription constructionDescription = constructorDescription.CreateConstructionDescription();

public class MyClass
{
    public readonly int value;

    public MyClass(int value)
    {
        this.value = value;
    }
}

Full Example

Full example

using System;
using Avalanche.Utilities;
using Avalanche.Utilities.Record;

class constructordescription
{
    public static void Run()
    {
        {
            // <01>
            IConstructorDescription constructorDescription = new ConstructorDescription
            {
                Constructor = null!,
                Type = typeof(MyClass),
                Parameters = new IParameterDescription[0],
                Annotations = new object[0],
                Record = null
            }.SetReadOnly();
            // </01>
        }
        {
            // <02>
            IConstructorDescription constructorDescription =
                new ConstructorDescription()
                .SetConstructor(null!)
                .SetType(typeof(MyClass))
                .SetParameters(new IParameterDescription[0])
                .SetAnnotations(new object[0])
                .SetRecord(null)
                .SetReadOnly();
            // </02>
            // <03>
            IConstructorDescription clone = constructorDescription.Clone().SetReadOnly();
            // </03>
        }

        {
            // <04>
            // Create delegate ctor
            Func<int, MyClass> ctor = (int value) => new MyClass(value);
            // Read info into description
            IRecordDescription recordDescription = new RecordDescription().Read(typeof(MyClass));
            // Create constructor description from delegate
            IConstructorDescription constructorDescription = new ConstructorDescription().SetRecord(recordDescription).Read(ctor);
            // </04>
        }
    }
    // <06>
    public class MyClass
    {
        public readonly int value;

        public MyClass(int value)
        {
            this.value = value;
        }
    }
    // </06>
}