/// <summary>
/// gets a setter to set a field in a class to a value given a string representation of the value
/// </summary>
/// <param name="info">The <see cref="FieldInfo"> of the field being set</see></param>
/// <param name="argumentClass">The class instance that the field will be set in</param>
/// <returns>A setter (Action) which given a string will set the field to the parsed value of the string</returns>
internal static Action <object> GetSetter(FieldInfo info, object argumentClass)
{
SetterFactory sf = new SetterFactory(info);
var setter2 = sf.GetSetter();
return(x => setter2(argumentClass, (string)x));
}
/// <summary>
/// Initializes the descriptors by scanning the application settings class
/// </summary>
private void BuildDescriptors()
{
TypeInfo ti = this.applicationArgumentClass.GetType().GetTypeInfo();
foreach (PropertyInfo property in ti.GetProperties(BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance))
{
try
{
Action <object> action = SetterFactory.GetSetter(property, this.applicationArgumentClass);
bool found = false;
foreach (CustomAttributeData attributeData in property.CustomAttributes.Where(
x => x.AttributeType.FullName == typeof(ArgumentAttribute).FullName))
{
this.AddDescriptor(attributeData, action, property.Name, property.PropertyType);
found = true;
}
if (!found)
{
this.AddDescriptor(null, action, property.Name, property.PropertyType);
}
}
catch (Exception ex)
{
this.context.Exceptions.Add(ex);
}
}
foreach (FieldInfo field in ti.GetFields(BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance))
{
// skip property backing fields
if (field.Name.EndsWith("k__BackingField", StringComparison.OrdinalIgnoreCase))
{
continue;
}
try
{
Action <object> action = SetterFactory.GetSetter(field, this.applicationArgumentClass);
bool found = false;
foreach (CustomAttributeData attributeData in
field.CustomAttributes.Where(
x => x.AttributeType.FullName == typeof(ArgumentAttribute).FullName))
{
this.AddDescriptor(attributeData, action, field.Name, field.FieldType);
found = true;
}
if (!found)
{
this.AddDescriptor(null, action, field.Name, field.FieldType);
}
}
catch (Exception ex)
{
this.context.Exceptions.Add(ex);
}
}
}
/// <summary>
/// Builds an Action which will set the value of
/// field or property. If the field or property is a List{}
/// if will check if the field/property has been initialized, if not
/// it will initialize it. Then it adds the value to the list.
/// </summary>
/// <returns>The action object</returns>
internal Action <object, string> GetSetter()
{
Type targetType = SetterFactory.GetListType(this.methodType);
if (targetType == null)
{
Action <object, string> setter = (obj, v) =>
{
object value = ObjectCreator.Create(this.methodType, v);
this.setIntoScalar(obj, value);
};
return(setter);
}
else
{
// this is a list, and it may be null, so get the list
Action <object, string> setter = (obj, v) =>
{
object value = ObjectCreator.Create(targetType, v);
object list = this.get(obj);
if (list == null)
{
ConstructorInfo constructor = this.methodType.GetConstructor(new Type[] { });
if (constructor != null)
{
list = constructor.Invoke(new object[] { });
this.setIntoList(obj, list);
}
}
if (list != null)
{
MethodInfo addMethod = list.GetType().GetMethod("Add");
addMethod.Invoke(list, new[] { value });
}
};
return(setter);
}
}
