ionoy

Install LiveSharp extension: https://marketplace.visualstudio.com/items?itemName=ionoy.LiveSharp
Install LiveSharp NuGet package: https://www.nuget.org/packages/livesharp

1) add [assembly:LiveSharpInjectRuleBaseClass("Xamarin.Forms.ContentPage", "Xamarin.Forms.ContentView")] attribute to App.xaml.cs
2) add [LiveSharpStart] attribute to App constructor
3) add this code to the end of App constructor
 LiveSharpContext.AddUpdateHandler(ctx => {
    var instances = ctx.UpdatedMethods
        .SelectMany(method => method.Instances)
        .Distinct()

ionoy

using Clarity;
using System;
using System.Collections.Generic;
using System.Linq;
using Xamarin.Forms;

namespace Sample.Calculator
{
    using CalcOp = Func<double, double, double>;

ionoy

class MyView : View, IElementController
{
    public static BindableProperty HostedPageProperty = BindableProperty.Create("HostedPage", typeof(Page), typeof(MyView), propertyChanged: OnHostedPageChanged);

    ReadOnlyCollection<Element> _logicalChildrenInner = new ReadOnlyCollection<Element>(new List<Element>());
    ReadOnlyCollection<Element> IElementController.LogicalChildren => _logicalChildrenInner;

    public void SetHostedPage(Page page)
    {
        _logicalChildrenInner = new ReadOnlyCollection<Element>(new List<Element>(new[] { page } ));

ionoy

using Clarity;
using System;
using System.Collections.Generic;
using System.Linq;
using Xamarin.Forms;

namespace Sample.Calculator
{
    public class App : Application {
        public App() => MainPage = new Calculator().MainPage();

ionoy

public class CodedUiTest : ContentView
{
    public CodedUiTest ()
    {
        InitializeContentLive(); 
    }

    public void InitializeContentLive()
    {
        var grid = new Grid();

ionoy

// Attribute can be omitted if method name is exactly `InitializeContent`
[ContentInitializer] 
public void InitializeContent() {
  Content = new Grid { 
    ...
  };
}

ionoy

[Export(typeof(IQuickInfoSourceProvider))]
[Name("Mouse processor")]
[ContentType(Strings.AmmyContentType)]
[TextViewRole(PredefinedTextViewRoles.Interactive)]
internal sealed class QuickInfoSourceProvider : IQuickInfoSourceProvider
{
    [Import]
    SVsServiceProvider serviceProvider;

    public IQuickInfoSource TryCreateQuickInfoSource(ITextBuffer textBuffer)

ionoy

Syntax:

extend syntax Expression
{
    ...
    | Parenthesized = "(" Expression ")";
    ...
}

Mapping:

ionoy

    [ExplicitSpaces]
    syntax Binding = "bind" s Path=BindingPath? Source=("from" s BindingSource)? Converter=("convert" s LambdaExpr s)? ConverterBack=("convertback" s LambdaExpr s)? Settings=("set" s "[" s (!"set" NodeMember; ContentDelimiter)* s  "]")?;

    syntax BindingPath
    {
      | StringLiteral
      | Parameter = "$" Key=Reference
      | QRef = Key=QualifiedReference
    }
    

ionoy

[CompileStatistic("RegularRuleParser")]
public static int _#_NotEscs_(int pos, string text)
{
	int okPos = -1;
	if (pos < text.Length)
	{
		int curPos = pos + 1;
		while (true)
		{
			okPos = curPos;