public object GetValue(Expression expression)
{
var call = ((MethodCallExpression)expression);
var targetObject = call.Object != null
? call.Object.GetValue <object>()
: null;
var parameters = call.Method.GetParameters();
var args = call.Arguments
.Select((expr, i) =>
{
var paramIType = parameters[i].ParameterType;
if (typeof(Expression).IsAssignableFrom(paramIType))
{
switch (expr.NodeType)
{
case ExpressionType.Lambda:
return(expr);
case ExpressionType.Quote:
return(((UnaryExpression)expr).Operand);
default:
throw new ArgumentOutOfRangeException();
}
}
return(ExpressionExtensions.GetValue <object>(expr));
})
.ToArray();
return(call.Method.Invoke(targetObject, args));
}
public object GetValue(Expression expression)
{
var mi = (MemberInitExpression)expression;
var obj = mi.NewExpression.GetValue <object>();
foreach (var memberBinding in mi.Bindings)
{
switch (memberBinding.BindingType)
{
case MemberBindingType.Assignment:
{
var ma = (MemberAssignment)memberBinding;
var memberValue = ma.Expression.GetValue <object>();
switch (memberBinding.Member.MemberType)
{
case MemberTypes.Field:
((FieldInfo)memberBinding.Member).SetValue(obj, memberValue);
break;
case MemberTypes.Property:
((PropertyInfo)memberBinding.Member).SetValue(obj, memberValue);
break;
default:
throw new NotSupportedException($"Member type '{memberBinding.Member.MemberType}' not supported");
}
}
break;
//case MemberBindingType.MemberBinding:
// break;
case MemberBindingType.ListBinding:
{
var lb = (MemberListBinding)memberBinding;
switch (lb.Member.MemberType)
{
case MemberTypes.Property:
{
var propMember = (PropertyInfo)lb.Member;
var propertyVal = propMember.GetValue(obj);
foreach (var lbInitializer in lb.Initializers)
{
lbInitializer.AddMethod.Invoke(propertyVal,
lbInitializer.Arguments
.Select(a => ExpressionExtensions.GetValue <object>(a))
.ToArray());
}
}
break;
default:
throw new ArgumentOutOfRangeException();
}
}
break;
default:
throw new ArgumentOutOfRangeException();
}
}
return(obj);
}