public void Stylet()
{
var syntaxTree = CSharpSyntaxTree.ParseText(
@"
namespace RoslynSandbox
{
public class Foo : Stylet.PropertyChangedBase
{
private int bar;
public int Bar
{
get => this.bar;
set
{
if (value == this.bar)
{
return;
}
this.bar = value;
this.NotifyOfPropertyChange();
}
}
}
}");
var compilation = CSharpCompilation.Create("test", new[] { syntaxTree }, MetadataReferences.FromAttributes().Concat(new[] { SpecialMetadataReferences.Stylet }));
var semanticModel = compilation.GetSemanticModel(syntaxTree);
var invocation = syntaxTree.FindInvocation("NotifyOfPropertyChange");
var method = (IMethodSymbol)semanticModel.GetSymbolSafe(invocation, CancellationToken.None);
Assert.AreEqual(AnalysisResult.Yes, PropertyChanged.IsOnPropertyChanged(method, semanticModel, CancellationToken.None));
}
public void CopyLocalInvoke()
{
var syntaxTree = CSharpSyntaxTree.ParseText(@"
namespace RoslynSandbox
{
using System.ComponentModel;
using System.Runtime.CompilerServices;
internal class Foo : INotifyPropertyChanged
{
public event PropertyChangedEventHandler PropertyChanged;
protected virtual void OnPropertyChanged([CallerMemberName] string propertyName = null)
{
var handler = this.PropertyChanged;
if (handler != null) handler(this, new PropertyChangedEventArgs(propertyName));
}
}
}");
var compilation = CSharpCompilation.Create("test", new[] { syntaxTree }, MetadataReferences.FromAttributes());
var semanticModel = compilation.GetSemanticModel(syntaxTree);
var invocation = syntaxTree.FindMethodDeclaration("OnPropertyChanged");
var method = semanticModel.GetDeclaredSymbol(invocation, CancellationToken.None);
Assert.AreEqual(AnalysisResult.Yes, PropertyChanged.IsOnPropertyChanged(method, semanticModel, CancellationToken.None));
}
public void IgnoreWhenRaiseForOtherInstance()
{
var syntaxTree = CSharpSyntaxTree.ParseText(@"
namespace RoslynSandbox
{
using System.ComponentModel;
using System.Runtime.CompilerServices;
public class ViewModel : INotifyPropertyChanged
{
private int value;
public event PropertyChangedEventHandler PropertyChanged;
public int Value
{
get
{
return this.value;
}
set
{
if (value == this.value)
{
return;
}
this.value = value;
this.OnPropertyChanged();
}
}
protected virtual void OnPropertyChanged([CallerMemberName] string propertyName = null)
{
this.PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
}
public void RaiseForChild(string propertyName)
{
var vm = new ViewModel();
vm.OnPropertyChanged(propertyName);
}
}
}");
var compilation = CSharpCompilation.Create("test", new[] { syntaxTree }, MetadataReferences.FromAttributes());
var semanticModel = compilation.GetSemanticModel(syntaxTree);
var invocation = syntaxTree.FindMethodDeclaration("RaiseForChild");
var method = semanticModel.GetDeclaredSymbol(invocation, CancellationToken.None);
Assert.AreEqual(AnalysisResult.No, PropertyChanged.IsOnPropertyChanged(method, semanticModel, CancellationToken.None));
}
public void WhenCreatingPropertyChangedEventArgsSeparately()
{
var syntaxTree = CSharpSyntaxTree.ParseText(@"
namespace RoslynSandbox
{
using System.ComponentModel;
using System.Runtime.CompilerServices;
public class Foo : INotifyPropertyChanged
{
private int bar;
public event PropertyChangedEventHandler PropertyChanged;
public int Bar
{
get => this.bar;
set
{
if (value == this.bar)
{
return;
}
this.bar = value;
this.OnPropertyChanged();
}
}
protected virtual void OnPropertyChanged([CallerMemberName] string propertyName = null)
{
var handler = this.PropertyChanged;
if (handler != null)
{
var args = new PropertyChangedEventArgs(propertyName);
handler.Invoke(this, args);
}
}
}
}");
var compilation = CSharpCompilation.Create("test", new[] { syntaxTree }, MetadataReferences.FromAttributes());
var semanticModel = compilation.GetSemanticModel(syntaxTree);
var invocation = syntaxTree.FindMethodDeclaration("OnPropertyChanged");
var method = semanticModel.GetDeclaredSymbol(invocation, CancellationToken.None);
Assert.AreEqual(AnalysisResult.Yes, PropertyChanged.IsOnPropertyChanged(method, semanticModel, CancellationToken.None));
}
public void WhenNotInvokerINotifyPropertyChangedFullyQualified(string call, AnalysisResult expected)
{
var syntaxTree = CSharpSyntaxTree.ParseText(
@"
namespace RoslynSandbox
{
public class Foo : System.ComponentModel.INotifyPropertyChanged
{
public Foo()
{
Bar1();
var a = Bar2();
a = Bar3();
if (Bar4())
{
}
OnPropertyChanged();
}
public event System.ComponentModel.PropertyChangedEventHandler PropertyChanged;
protected virtual void OnPropertyChanged([System.Runtime.CompilerServices.CallerMemberName] string propertyName = null)
{
PropertyChanged?.Invoke(this, new System.ComponentModel.PropertyChangedEventArgs(propertyName));
}
private void Bar1()
{
}
private int Bar2() => 1;
private int Bar3() => 2;
private bool Bar4() => true;
}
}");
var compilation = CSharpCompilation.Create("test", new[] { syntaxTree }, MetadataReferences.FromAttributes());
var semanticModel = compilation.GetSemanticModel(syntaxTree);
var invocation = syntaxTree.FindInvocation(call);
Assert.AreEqual(expected, PropertyChanged.IsOnPropertyChanged(invocation, semanticModel, CancellationToken.None));
}
public void ExceptionHandlingRelayCommand()
{
var syntaxTree = CSharpSyntaxTree.ParseText(@"
namespace RoslynSandbox
{
using System;
using Gu.Reactive;
using Gu.Wpf.Reactive;
public class ExceptionHandlingRelayCommand : ConditionRelayCommand
{
private Exception _exception;
public ExceptionHandlingRelayCommand(Action action, ICondition condition)
: base(action, condition)
{
}
public Exception Exception
{
get => _exception;
private set
{
if (Equals(value, _exception))
{
return;
}
_exception = value;
OnPropertyChanged();
}
}
}
}");
var compilation = CSharpCompilation.Create("test", new[] { syntaxTree }, MetadataReferences.FromAttributes());
var semanticModel = compilation.GetSemanticModel(syntaxTree);
var invocation = syntaxTree.FindInvocation("OnPropertyChanged()");
Assert.AreEqual(AnalysisResult.Maybe, PropertyChanged.IsOnPropertyChanged(invocation, semanticModel, CancellationToken.None, out var method));
Assert.AreEqual("Gu.Wpf.Reactive.CommandBase<object>.OnPropertyChanged(string)", method.ToString());
}
public void WhenTrue(string signature)
{
var syntaxTree = CSharpSyntaxTree.ParseText(
@"
namespace RoslynSandbox
{
using System;
using System.ComponentModel;
using System.Linq.Expressions;
using System.Runtime.CompilerServices;
public class Foo : INotifyPropertyChanged
{
public event PropertyChangedEventHandler PropertyChanged;
protected virtual void OnPropertyChanged<T>(Expression<Func<T>> property)
{
this.OnPropertyChanged(((MemberExpression)property.Body).Member.Name);
}
protected virtual void OnPropertyChanged(PropertyChangedEventArgs e)
{
this.PropertyChanged?.Invoke(this, e);
}
protected virtual void OnPropertyChanged([CallerMemberName] string propertyName = null)
{
this.PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
}
}
}");
var compilation = CSharpCompilation.Create("test", new[] { syntaxTree }, MetadataReferences.FromAttributes());
var semanticModel = compilation.GetSemanticModel(syntaxTree);
var methodDeclaration = syntaxTree.FindMethodDeclaration(signature);
var method = semanticModel.GetDeclaredSymbol(methodDeclaration);
Assert.AreEqual(AnalysisResult.Yes, PropertyChanged.IsOnPropertyChanged(method, semanticModel, CancellationToken.None));
}
public void WhenNotInvoker()
{
var syntaxTree = CSharpSyntaxTree.ParseText(
@"
namespace RoslynSandbox
{
public class Foo
{
public Foo()
{
Bar();
}
private void Bar()
{
}
}
}");
var compilation = CSharpCompilation.Create("test", new[] { syntaxTree }, MetadataReferences.FromAttributes());
var semanticModel = compilation.GetSemanticModel(syntaxTree);
var invocation = syntaxTree.FindInvocation("Bar();");
Assert.AreEqual(AnalysisResult.No, PropertyChanged.IsOnPropertyChanged(invocation, semanticModel, CancellationToken.None));
}
public void MvvmLight()
{
var syntaxTree = CSharpSyntaxTree.ParseText(
@"
namespace RoslynSandbox
{
public class Foo : GalaSoft.MvvmLight.ViewModelBase
{
private int bar;
public int Bar
{
get => this.bar;
set
{
if (value == this.bar)
{
return;
}
this.bar = value;
this.RaisePropertyChanged();
}
}
}
}");
var compilation = CSharpCompilation.Create(
"test",
new[] { syntaxTree },
MetadataReferences.Transitive(typeof(GalaSoft.MvvmLight.ViewModelBase).Assembly));
var semanticModel = compilation.GetSemanticModel(syntaxTree);
var invocation = syntaxTree.FindInvocation("RaisePropertyChanged");
var method = (IMethodSymbol)semanticModel.GetSymbolSafe(invocation, CancellationToken.None);
Assert.AreEqual(AnalysisResult.Yes, PropertyChanged.IsOnPropertyChanged(method, semanticModel, CancellationToken.None));
}
