internal static IMethodSymbol GenerateSetPropertyMethod(CommonCompilation compilation)
{
var body = Syntax.ParseStatement(
@"if (!System.Collections.Generic.EqualityComparer<T>.Default.Equals(field, value))
{
field = value;
var handler = PropertyChanged;
if (handler != null)
{
handler(this, new System.ComponentModel.PropertyChangedEventArgs(name));
}
}");
body = body.WithAdditionalAnnotations(CodeAnnotations.Simplify);
var stringType = compilation.GetSpecialType(SpecialType.System_String);
var voidType = compilation.GetSpecialType(SpecialType.System_Void);
var typeParameter = SymbolFactory.CreateTypeParameter("T");
var parameter1 = SymbolFactory.CreateParameter(
attributes: null,
refKind: RefKind.Ref,
isParams: false,
type: typeParameter,
name: "field");
var parameter2 = SymbolFactory.CreateParameter(typeParameter, "value");
var parameter3 = SymbolFactory.CreateParameter(stringType, "name");
return(SymbolFactory.CreateMethod(
attributes: null,
accessibility: CommonAccessibility.Private,
modifiers: new SymbolModifiers(),
returnType: voidType,
explicitInterfaceSymbolOpt: null,
name: "SetProperty",
typeParameters: new[] { typeParameter },
parameters: new[] { parameter1, parameter2, parameter3 },
statements: new[] { body }));
}
