internal static void GenerateConstructor(this ViewModelBuilder vmBuilder, ViewModelToGenerate viewModelToGenerate)
{
if (viewModelToGenerate.GenerateConstructor)
{
Generate(vmBuilder, viewModelToGenerate.ViewModelClassSymbol.Name,
viewModelToGenerate.InjectionsToGenerate,
viewModelToGenerate.CommandsToGenerate?.Any() == true,
viewModelToGenerate.IsEventSubscriber);
}
}
/// <summary>
/// Called for every syntax node in the compilation, we can inspect the nodes and save any information useful for generation
/// </summary>
public void OnVisitSyntaxNode(GeneratorSyntaxContext context)
{
if (context.Node is ClassDeclarationSyntax
{
AttributeLists : { Count : > 0 }
} classDeclarationSyntax)
{
var viewModelClassSymbol = context.SemanticModel.GetDeclaredSymbol(classDeclarationSyntax);
var viewModelAttributeData = viewModelClassSymbol?.GetAttributes().SingleOrDefault(x => x.AttributeClass?.ToDisplayString() == "MvvmGen.ViewModelAttribute");
if (viewModelClassSymbol is not null && viewModelAttributeData is not null)
{
var(commandsToGenerate,
commandsToInvalidateByPropertyName,
propertiesToGenerate,
propertyInvalidationsByGeneratedPropertyName) = ViewModelMemberInspector.Inspect(viewModelClassSymbol);
var viewModelToGenerate = new ViewModelToGenerate(viewModelClassSymbol)
{
InjectionsToGenerate = ViewModelInjectAttributeInspector.Inspect(viewModelClassSymbol),
GenerateConstructor = ViewModelAttributeInspector.Inspect(viewModelAttributeData),
ViewModelFactoryToGenerate = ViewModelGenerateFactoryAttributeInspector.Inspect(viewModelClassSymbol),
CommandsToGenerate = commandsToGenerate,
PropertiesToGenerate = propertiesToGenerate,
CommandsToInvalidateByPropertyName = commandsToInvalidateByPropertyName
};
viewModelToGenerate.WrappedModelType = ModelMemberInspector.Inspect(viewModelAttributeData, viewModelToGenerate.PropertiesToGenerate);
SetPropertiesToInvalidatePropertyOnPropertiesToGenerate(viewModelToGenerate.PropertiesToGenerate, propertyInvalidationsByGeneratedPropertyName);
viewModelToGenerate.IsEventSubscriber = viewModelClassSymbol.Interfaces.Any(x => x.ToDisplayString().StartsWith("MvvmGen.Events.IEventSubscriber"));
ViewModelsToGenerate.Add(viewModelToGenerate);
}
}
}
internal static void GenerateFactoryClass(this ViewModelBuilder vmBuilder, ViewModelToGenerate viewModelToGenerate)
{
if (viewModelToGenerate.ViewModelFactoryToGenerate is null)
{
return;
}
var factoryToGenerate = viewModelToGenerate.ViewModelFactoryToGenerate;
var viewModelClassName = viewModelToGenerate.ViewModelClassSymbol.Name;
var injectionsToGenerate = viewModelToGenerate.InjectionsToGenerate ?? Enumerable.Empty <InjectionToGenerate>();
var accessModifier = viewModelToGenerate.ViewModelClassSymbol.DeclaredAccessibility switch
{
Accessibility.Public => "public",
Accessibility.Internal => "internal",
_ => ""
};
vmBuilder.AppendLine();
vmBuilder.AppendLine($"{accessModifier} interface {factoryToGenerate.InterfaceName} : IViewModelFactory<{viewModelClassName}> {{ }}");
vmBuilder.AppendLine();
vmBuilder.AppendLine($"{accessModifier} class {factoryToGenerate.ClassName} : {factoryToGenerate.InterfaceName}");
vmBuilder.AppendLine("{");
vmBuilder.IncreaseIndent();
vmBuilder.Append($"public {factoryToGenerate.ClassName}(");
var first = true;
foreach (var injectionToGenerate in injectionsToGenerate)
{
if (!first)
{
vmBuilder.Append(", ");
}
first = false;
vmBuilder.Append($"{injectionToGenerate.Type} {injectionToGenerate.PropertyName.ToCamelCase()}");
}
vmBuilder.AppendLine(")");
vmBuilder.AppendLine("{");
vmBuilder.IncreaseIndent();
foreach (var injectionToGenerate in injectionsToGenerate)
{
vmBuilder.AppendLine($"this.{injectionToGenerate.PropertyName} = {injectionToGenerate.PropertyName.ToCamelCase()};");
}
vmBuilder.DecreaseIndent();
vmBuilder.AppendLine("}");
InjectionPropertyGenerator.GenerateInjectionProperties(vmBuilder, injectionsToGenerate);
vmBuilder.AppendLine();
vmBuilder.Append($"public {viewModelClassName} Create() => new {viewModelClassName}(");
first = true;
foreach (var injectionToGenerate in injectionsToGenerate)
{
if (!first)
{
vmBuilder.Append(", ");
}
first = false;
vmBuilder.Append(injectionToGenerate.PropertyName);
}
vmBuilder.AppendLine(");");
vmBuilder.DecreaseIndent();
vmBuilder.AppendLine("}");
}
}
