private static IEnumerable <Expression> GetChildren(MemberBinding binding)
{
switch (binding.BindingType)
{
case MemberBindingType.Assignment:
yield return(((MemberAssignment)binding).Expression);
break;
case MemberBindingType.MemberBinding:
foreach (Expression child in ExpressionExtensions.GetChildren((IEnumerable <MemberBinding>)((MemberMemberBinding)binding).Bindings))
{
yield return(child);
}
break;
case MemberBindingType.ListBinding:
using (IEnumerator <Expression> enumerator = ExpressionExtensions.GetChildren((IEnumerable <ElementInit>)((MemberListBinding)binding).Initializers).GetEnumerator())
{
while (enumerator.MoveNext())
{
Expression child = enumerator.Current;
yield return(child);
}
break;
}
}
}
public static IEnumerable <Expression> GetChildren(this Expression exp)
{
switch (exp)
{
case UnaryExpression _:
yield return(((UnaryExpression)exp).Operand);
break;
case BinaryExpression _:
yield return(((BinaryExpression)exp).Left);
yield return(((BinaryExpression)exp).Right);
yield return((Expression)((BinaryExpression)exp).Conversion);
break;
case TypeBinaryExpression _:
yield return(((TypeBinaryExpression)exp).Expression);
break;
case ConditionalExpression _:
yield return(((ConditionalExpression)exp).Test);
yield return(((ConditionalExpression)exp).IfTrue);
yield return(((ConditionalExpression)exp).IfFalse);
break;
case MemberExpression _:
yield return(((MemberExpression)exp).Expression);
break;
case MethodCallExpression _:
yield return(((MethodCallExpression)exp).Object);
foreach (Expression expression in ((MethodCallExpression)exp).Arguments)
{
yield return(expression);
}
break;
case LambdaExpression _:
yield return(((LambdaExpression)exp).Body);
foreach (ParameterExpression parameter in ((LambdaExpression)exp).Parameters)
{
yield return((Expression)parameter);
}
break;
case NewExpression _:
foreach (Expression expression in ((NewExpression)exp).Arguments)
{
yield return(expression);
}
break;
case NewArrayExpression _:
foreach (Expression expression in ((NewArrayExpression)exp).Expressions)
{
yield return(expression);
}
break;
case InvocationExpression _:
yield return(((InvocationExpression)exp).Expression);
foreach (Expression expression in ((InvocationExpression)exp).Arguments)
{
yield return(expression);
}
break;
case MemberInitExpression _:
yield return((Expression)((MemberInitExpression)exp).NewExpression);
foreach (Expression child in ExpressionExtensions.GetChildren((IEnumerable <MemberBinding>)((MemberInitExpression)exp).Bindings))
{
yield return(child);
}
break;
case ListInitExpression _:
yield return((Expression)((ListInitExpression)exp).NewExpression);
foreach (Expression child in ExpressionExtensions.GetChildren((IEnumerable <ElementInit>)((ListInitExpression)exp).Initializers))
{
yield return(child);
}
break;
}
}