feat(apb)!: getters return field error

this way we clean upstream code from a lot of .ok_or(), and everything
that doesn't care about the error can go back to previous usage just
adding .ok()

apb/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "apb"
-version = "0.1.1"
+version = "0.2.0"
 edition = "2021"
 authors = [ "alemi <me@alemi.dev>" ]
 description = "Traits and types to handle ActivityPub objects"

apb/src/key.rs

@@ -1,7 +1,7 @@
 // TODO technically this is not part of ActivityStreams
 
 pub trait PublicKey : super::Base {
-	fn owner(&self) -> Option<&str> { None }
+	fn owner(&self) -> crate::Field<&str> { Err(crate::FieldErr("owner")) }
 	fn public_key_pem(&self) -> &str;
 }
 

apb/src/lib.rs

@@ -93,7 +93,6 @@ pub(crate) use macros::{strenum, getter, setter};
 mod node;
 pub use node::Node;
 
-pub mod server;
 pub mod target;
 
 mod key;
@@ -132,6 +131,12 @@ pub use types::{
 	},
 };
 
+#[derive(Debug, thiserror::Error)]
+#[error("missing field '{0}'")]
+pub struct FieldErr(pub &'static str);
+
+pub type Field<T> = Result<T, FieldErr>;
+
 #[cfg(feature = "unstructured")]
 pub fn new() -> serde_json::Value {
 	serde_json::Value::Object(serde_json::Map::default())

apb/src/macros.rs

@@ -110,102 +110,94 @@ pub(crate) use strenum;
 
 macro_rules! getter {
 	($name:ident -> type $t:ty) => {
-		fn $name(&self) -> Option<$t> {
+		paste::paste! {
-			self.get("type")?.as_str()?.try_into().ok()
+			fn [< $name:snake >] (&self) -> $crate::Field<$t> {
+				self.get("type")
+					.and_then(|x| x.as_str())
+					.and_then(|x| x.try_into().ok())
+					.ok_or($crate::FieldErr("type"))
+			}
 		}
 	};
 
 	($name:ident -> bool) => {
-		fn $name(&self) -> Option<bool> {
+		paste::paste! {
-			self.get(stringify!($name))?.as_bool()
+			fn [< $name:snake >](&self) -> $crate::Field<bool> {
+				self.get(stringify!($name))
+					.and_then(|x| x.as_bool())
+					.ok_or($crate::FieldErr(stringify!($name)))
+			}
 		}
 	};
 
 	($name:ident -> &str) => {
-		fn $name(&self) -> Option<&str> {
+		paste::paste! {
-			self.get(stringify!($name))?.as_str()
+			fn [< $name:snake >](&self) -> $crate::Field<&str> {
+				self.get(stringify!($name))
+					.and_then(|x| x.as_str())
+					.ok_or($crate::FieldErr(stringify!($name)))
 			}
-	};
-
-	($name:ident::$rename:ident -> bool) => {
-		fn $name(&self) -> Option<bool> {
-			self.get(stringify!($rename))?.as_bool()
-		}
-	};
-
-	($name:ident::$rename:ident -> &str) => {
-		fn $name(&self) -> Option<&str> {
-			self.get(stringify!($rename))?.as_str()
 		}
 	};
 
 	($name:ident -> f64) => {
-		fn $name(&self) -> Option<f64> {
+		paste::paste! {
-			self.get(stringify!($name))?.as_f64()
+			fn [< $name:snake >](&self) -> $crate::Field<f64> {
+				self.get(stringify!($name))
+					.and_then(|x| x.as_f64())
+					.ok_or($crate::FieldErr(stringify!($name)))
 			}
-	};
-
-	($name:ident::$rename:ident -> f64) => {
-		fn $name(&self) -> Option<f64> {
-			self.get(stringify!($rename))?.as_f64()
 		}
 	};
 
 	($name:ident -> u64) => {
-		fn $name(&self) -> Option<u64> {
+		paste::paste! {
-			self.get(stringify!($name))?.as_u64()
+			fn [< $name:snake >](&self) -> $crate::Field<u64> {
+				self.get(stringify!($name))
+					.and_then(|x| x.as_u64())
+					.ok_or($crate::FieldErr(stringify!($name)))
+			}
 		}
 	};
 
-	($name:ident::$rename:ident -> u64) => {
+	($name:ident -> i64) => {
-		fn $name(&self) -> Option<u64> {
+		paste::paste! {
-			self.get(stringify!($rename))?.as_u64()
+			fn [< $name:snake >](&self) -> $crate::Field<i64> {
+				self.get(stringify!($name))
+					.and_then(|x| x.as_i64())
+					.ok_or($crate::FieldErr(stringify!($name)))
+			}
 		}
 	};
 
 	($name:ident -> chrono::DateTime<chrono::Utc>) => {
-		fn $name(&self) -> Option<chrono::DateTime<chrono::Utc>> {
+		paste::paste! {
-			Some(
+			fn [< $name:snake >](&self) -> $crate::Field<chrono::DateTime<chrono::Utc>> {
+				Ok(
 					chrono::DateTime::parse_from_rfc3339(
 							self
-							.get(stringify!($name))?
+								.get(stringify!($name))
-							.as_str()?
+								.and_then(|x| x.as_str())
+								.ok_or($crate::FieldErr(stringify!($name)))?
 						)
-					.ok()?
+						.map_err(|e| {
+							tracing::warn!("invalid time string ({e}), ignoring");
+							$crate::FieldErr(stringify!($name))
+						})?
 						.with_timezone(&chrono::Utc)
 				)
 			}
-	};
-
-	($name:ident::$rename:ident -> chrono::DateTime<chrono::Utc>) => {
-		fn $name(&self) -> Option<chrono::DateTime<chrono::Utc>> {
-			Some(
-				chrono::DateTime::parse_from_rfc3339(
-						self
-							.get(stringify!($rename))?
-							.as_str()?
-					)
-					.ok()?
-					.with_timezone(&chrono::Utc)
-			)
 		}
 	};
 
 	($name:ident -> node $t:ty) => {
-		fn $name(&self) -> $crate::Node<$t> {
+		paste::paste! {
+			fn [< $name:snake >](&self) -> $crate::Node<$t> {
 				match self.get(stringify!($name)) {
 					Some(x) => $crate::Node::from(x.clone()),
 					None => $crate::Node::Empty,
 				}
 			}
-	};
-
-	($name:ident::$rename:ident -> node $t:ty) => {
-		fn $name(&self) -> $crate::Node<$t> {
-			match self.get(stringify!($rename)) {
-				Some(x) => $crate::Node::from(x.clone()),
-				None => $crate::Node::Empty,
-			}
 		}
 	};
 }
@@ -215,7 +207,7 @@ pub(crate) use getter;
 macro_rules! setter {
 	($name:ident -> bool) => {
 		paste::item! {
-			fn [< set_$name >](mut self, val: Option<bool>) -> Self {
+			fn [< set_$name:snake >](mut self, val: Option<bool>) -> Self {
 				$crate::macros::set_maybe_value(
 					&mut self, stringify!($name), val.map(|x| serde_json::Value::Bool(x))
 				);
@@ -224,20 +216,9 @@ macro_rules! setter {
 		}
 	};
 
-	($name:ident::$rename:ident -> bool) => {
-		paste::item! {
-			fn [< set_$name >](mut self, val: Option<bool>) -> Self {
-				$crate::macros::set_maybe_value(
-					&mut self, stringify!($rename), val.map(|x| serde_json::Value::Bool(x))
-				);
-				self
-			}
-		}
-	};
-
 	($name:ident -> &str) => {
 		paste::item! {
-			fn [< set_$name >](mut self, val: Option<&str>) -> Self {
+			fn [< set_$name:snake >](mut self, val: Option<&str>) -> Self {
 				$crate::macros::set_maybe_value(
 					&mut self, stringify!($name), val.map(|x| serde_json::Value::String(x.to_string()))
 				);
@@ -246,20 +227,9 @@ macro_rules! setter {
 		}
 	};
 
-	($name:ident::$rename:ident -> &str) => {
-		paste::item! {
-			fn [< set_$name >](mut self, val: Option<&str>) -> Self {
-				$crate::macros::set_maybe_value(
-					&mut self, stringify!($rename), val.map(|x| serde_json::Value::String(x.to_string()))
-				);
-				self
-			}
-		}
-	};
-
 	($name:ident -> u64) => {
 		paste::item! {
-			fn [< set_$name >](mut self, val: Option<u64>) -> Self {
+			fn [< set_$name:snake >](mut self, val: Option<u64>) -> Self {
 				$crate::macros::set_maybe_value(
 					&mut self, stringify!($name), val.map(|x| serde_json::Value::Number(serde_json::Number::from(x)))
 				);
@@ -268,11 +238,11 @@ macro_rules! setter {
 		}
 	};
 
-	($name:ident::$rename:ident -> u64) => {
+	($name:ident -> i64) => {
 		paste::item! {
-			fn [< set_$name >](mut self, val: Option<u64>) -> Self {
+			fn [< set_$name:snake >](mut self, val: Option<i64>) -> Self {
 				$crate::macros::set_maybe_value(
-					&mut self, stringify!($rename), val.map(|x| serde_json::Value::Number(serde_json::Number::from(x)))
+					&mut self, stringify!($name), val.map(|x| serde_json::Value::Number(serde_json::Number::from(x)))
 				);
 				self
 			}
@@ -281,7 +251,7 @@ macro_rules! setter {
 
 	($name:ident -> chrono::DateTime<chrono::Utc>) => {
 		paste::item! {
-			fn [< set_$name >](mut self, val: Option<chrono::DateTime<chrono::Utc>>) -> Self {
+			fn [< set_$name:snake >](mut self, val: Option<chrono::DateTime<chrono::Utc>>) -> Self {
 				$crate::macros::set_maybe_value(
 					&mut self, stringify!($name), val.map(|x| serde_json::Value::String(x.to_rfc3339()))
 				);
@@ -290,20 +260,9 @@ macro_rules! setter {
 		}
 	};
 
-	($name:ident::$rename:ident -> chrono::DateTime<chrono::Utc>) => {
-		paste::item! {
-			fn [< set_$name >](mut self, val: Option<chrono::DateTime<chrono::Utc>>) -> Self {
-				$crate::macros::set_maybe_value(
-					&mut self, stringify!($rename), val.map(|x| serde_json::Value::String(x.to_rfc3339()))
-				);
-				self
-			}
-		}
-	};
-
 	($name:ident -> node $t:ty ) => {
 		paste::item! {
-			fn [< set_$name >](mut self, val: $crate::Node<$t>) -> Self {
+			fn [< set_$name:snake >](mut self, val: $crate::Node<$t>) -> Self {
 				$crate::macros::set_maybe_node(
 					&mut self, stringify!($name), val
 				);
@@ -314,7 +273,7 @@ macro_rules! setter {
 
 	($name:ident::$rename:ident -> node $t:ty ) => {
 		paste::item! {
-			fn [< set_$name >](mut self, val: $crate::Node<$t>) -> Self {
+			fn [< set_$name:snake >](mut self, val: $crate::Node<$t>) -> Self {
 				$crate::macros::set_maybe_node(
 					&mut self, stringify!($rename), val
 				);
@@ -325,7 +284,7 @@ macro_rules! setter {
 
 	($name:ident -> type $t:ty ) => {
 		paste::item! {
-			fn [< set_$name >](mut self, val: Option<$t>) -> Self {
+			fn [< set_$name:snake >](mut self, val: Option<$t>) -> Self {
 				$crate::macros::set_maybe_value(
 					&mut self, "type", val.map(|x| serde_json::Value::String(x.as_ref().to_string()))
 				);

apb/src/node.rs

@@ -104,7 +104,7 @@ impl<T : super::Base> Node<T> {
 		match self {
 			Node::Empty => None,
 			Node::Link(uri) => Some(uri.href().to_string()),
-			Node::Object(obj) => Some(obj.id()?.to_string()),
+			Node::Object(obj) => Some(obj.id().ok()?.to_string()),
 			Node::Array(arr) => Some(arr.front()?.id()?.to_string()),
 		}
 	}

apb/src/server.rs

@@ -1,33 +0,0 @@
-#[async_trait::async_trait]
-pub trait Outbox {
-	type Object: crate::Object;
-	type Activity: crate::Activity;
-	type Error: std::error::Error;
-
-	async fn create_note(&self, uid: String, object: Self::Object) -> Result<String, Self::Error>;
-	async fn create(&self, uid: String, activity: Self::Activity) -> Result<String, Self::Error>;
-	async fn like(&self, uid: String, activity: Self::Activity) -> Result<String, Self::Error>;
-	async fn follow(&self, uid: String, activity: Self::Activity) -> Result<String, Self::Error>;
-	async fn announce(&self, uid: String, activity: Self::Activity) -> Result<String, Self::Error>;
-	async fn accept(&self, uid: String, activity: Self::Activity) -> Result<String, Self::Error>;
-	async fn reject(&self, _uid: String, _activity: Self::Activity) -> Result<String, Self::Error>;
-	async fn undo(&self, uid: String, activity: Self::Activity) -> Result<String, Self::Error>;
-	async fn delete(&self, uid: String, activity: Self::Activity) -> Result<String, Self::Error>;
-	async fn update(&self, uid: String, activity: Self::Activity) -> Result<String, Self::Error>;
-}
-
-#[async_trait::async_trait]
-pub trait Inbox {
-	type Activity: crate::Activity;
-	type Error: std::error::Error;
-
-	async fn create(&self, server: String, activity: Self::Activity) -> Result<(), Self::Error>;
-	async fn like(&self, server: String, activity: Self::Activity) -> Result<(), Self::Error>;
-	async fn follow(&self, server: String, activity: Self::Activity) -> Result<(), Self::Error>;
-	async fn announce(&self, server: String, activity: Self::Activity) -> Result<(), Self::Error>;
-	async fn accept(&self, server: String, activity: Self::Activity) -> Result<(), Self::Error>;
-	async fn reject(&self, server: String, activity: Self::Activity) -> Result<(), Self::Error>;
-	async fn undo(&self, server: String, activity: Self::Activity) -> Result<(), Self::Error>;
-	async fn delete(&self, server: String, activity: Self::Activity) -> Result<(), Self::Error>;
-	async fn update(&self, server: String, activity: Self::Activity) -> Result<(), Self::Error>;
-}

apb/src/target.rs

@@ -3,7 +3,11 @@ use crate::Object;
 pub const PUBLIC : &str = "https://www.w3.org/ns/activitystreams#Public";
 
 pub trait Addressed {
-	fn addressed(&self) -> Vec<String>;
+	fn addressed(&self) -> Vec<String>; // TODO rename this? remate others? idk
+	fn primary_targets(&self) -> Vec<String>;
+	fn secondary_targets(&self) -> Vec<String>;
+	fn public_targets(&self) -> Vec<String>;
+	fn private_targets(&self) -> Vec<String>;
 }
 
 impl<T: Object> Addressed for T {
@@ -14,4 +18,28 @@ impl<T: Object> Addressed for T {
 		to.append(&mut self.bcc().ids());
 		to
 	}
+
+	fn primary_targets(&self) -> Vec<String> {
+		let mut to : Vec<String> = self.to().ids();
+		to.append(&mut self.bto().ids());
+		to
+	}
+
+	fn secondary_targets(&self) -> Vec<String> {
+		let mut to : Vec<String> = self.cc().ids();
+		to.append(&mut self.bcc().ids());
+		to
+	}
+
+	fn public_targets(&self) -> Vec<String> {
+		let mut to : Vec<String> = self.to().ids();
+		to.append(&mut self.cc().ids());
+		to
+	}
+
+	fn private_targets(&self) -> Vec<String> {
+		let mut to : Vec<String> = self.bto().ids();
+		to.append(&mut self.bcc().ids());
+		to
+	}
 }

apb/src/types/base.rs

@@ -9,8 +9,8 @@ crate::strenum! {
 }
 
 pub trait Base : crate::macros::MaybeSend {
-	fn id(&self) -> Option<&str> { None }
+	fn id(&self) -> crate::Field<&str> { Err(crate::FieldErr("id")) }
-	fn base_type(&self) -> Option<BaseType> { None }
+	fn base_type(&self) -> crate::Field<BaseType> { Err(crate::FieldErr("type")) }
 }
 
 
@@ -21,30 +21,35 @@ pub trait BaseMut : crate::macros::MaybeSend {
 
 
 impl Base for String {
-	fn id(&self) -> Option<&str> {
+	fn id(&self) -> crate::Field<&str> {
-		Some(self)
+		Ok(self)
 	}
 
-	fn base_type(&self) -> Option<BaseType> {
+	fn base_type(&self) -> crate::Field<BaseType> {
-		Some(BaseType::Link(LinkType::Link))
+		Ok(BaseType::Link(LinkType::Link))
 	}
 }
 
 #[cfg(feature = "unstructured")]
 impl Base for serde_json::Value {
-	fn base_type(&self) -> Option<BaseType> {
+	fn base_type(&self) -> crate::Field<BaseType> {
 		if self.is_string() {
-			Some(BaseType::Link(LinkType::Link))
+			Ok(BaseType::Link(LinkType::Link))
 		} else {
-			self.get("type")?.as_str()?.try_into().ok()
+			self.get("type")
+				.and_then(|x| x.as_str())
+				.and_then(|x| x.try_into().ok())
+				.ok_or(crate::FieldErr("type"))
 		}
 	}
 
-	fn id(&self) -> Option<&str> {
+	fn id(&self) -> crate::Field<&str> {
 		if self.is_string() {
-			self.as_str()
+			Ok(self.as_str().ok_or(crate::FieldErr("id"))?)
 		} else {
-			self.get("id").map(|x| x.as_str())?
+			self.get("id")
+				.and_then(|x| x.as_str())
+				.ok_or(crate::FieldErr("id"))
 		}
 	}
 }

apb/src/types/link.rs

@@ -1,3 +1,5 @@
+use crate::{Field, FieldErr};
+
 #[cfg(feature = "activitypub-miscellaneous-terms")]
 crate::strenum! {
 	pub enum LinkType {
@@ -17,24 +19,24 @@ crate::strenum! {
 
 pub trait Link : crate::Base {
 	fn href(&self) -> &str;
-	fn rel(&self) -> Option<&str> { None }
+	fn rel(&self) -> Field<&str> { Err(FieldErr("rel")) }
-	fn link_media_type(&self) -> Option<&str> { None } // also in obj
+	fn media_type(&self) -> Field<&str> { Err(FieldErr("mediaType")) } // also in obj
-	fn link_name(&self) -> Option<&str> { None }       // also in obj
+	fn name(&self) -> Field<&str> { Err(FieldErr("name")) }       // also in obj
-	fn hreflang(&self) -> Option<&str> { None }
+	fn hreflang(&self) -> Field<&str> { Err(FieldErr("hreflang")) }
-	fn height(&self) -> Option<u64> { None }
+	fn height(&self) -> Field<u64> { Err(FieldErr("height")) }
-	fn width(&self) -> Option<u64> { None }
+	fn width(&self) -> Field<u64> { Err(FieldErr("width")) }
-	fn link_preview(&self) -> Option<&str> { None }    // also in obj
+	fn preview(&self) -> Field<&str> { Err(FieldErr("linkPreview")) }    // also in obj
 }
 
 pub trait LinkMut : crate::BaseMut {
 	fn set_href(self, href: &str) -> Self;
 	fn set_rel(self, val: Option<&str>) -> Self;
-	fn set_link_media_type(self, val: Option<&str>) -> Self; // also in obj
+	fn set_media_type(self, val: Option<&str>) -> Self; // also in obj
-	fn set_link_name(self, val: Option<&str>) -> Self;       // also in obj
+	fn set_name(self, val: Option<&str>) -> Self;       // also in obj
 	fn set_hreflang(self, val: Option<&str>) -> Self;
 	fn set_height(self, val: Option<u64>) -> Self;
 	fn set_width(self, val: Option<u64>) -> Self;
-	fn set_link_preview(self, val: Option<&str>) -> Self;    // also in obj
+	fn set_preview(self, val: Option<&str>) -> Self;    // also in obj
 }
 
 impl Link for String {
@@ -55,12 +57,12 @@ impl Link for serde_json::Value {
 	}
 
 	crate::getter! { rel -> &str }
-	crate::getter! { link_media_type::mediaType -> &str }
+	crate::getter! { mediaType -> &str }
-	crate::getter! { link_name::name -> &str }
+	crate::getter! { name -> &str }
 	crate::getter! { hreflang -> &str }
 	crate::getter! { height -> u64 }
 	crate::getter! { width -> u64 }
-	crate::getter! { link_preview::preview -> &str }
+	crate::getter! { preview -> &str }
 }
 
 #[cfg(feature = "unstructured")]
@@ -79,10 +81,10 @@ impl LinkMut for serde_json::Value {
 	}
 
 	crate::setter! { rel -> &str }
-	crate::setter! { link_media_type::mediaType -> &str }
+	crate::setter! { mediaType -> &str }
-	crate::setter! { link_name::name -> &str }
+	crate::setter! { name -> &str }
 	crate::setter! { hreflang -> &str }
 	crate::setter! { height -> u64 }
 	crate::setter! { width -> u64 }
-	crate::setter! { link_preview::preview -> &str }
+	crate::setter! { preview -> &str }
 }

apb/src/types/object/activity/accept.rs

@@ -8,7 +8,7 @@ strenum! {
 }
 
 pub trait Accept : super::Activity {
-	fn accept_type(&self) -> Option<AcceptType> { None }
+	fn accept_type(&self) -> crate::Field<AcceptType> { Err(crate::FieldErr("type")) }
 }
 
 pub trait AcceptMut : super::ActivityMut {

apb/src/types/object/activity/ignore.rs

@@ -8,7 +8,7 @@ strenum! {
 }
 
 pub trait Ignore : super::Activity {
-	fn ignore_type(&self) -> Option<IgnoreType> { None }
+	fn ignore_type(&self) -> crate::Field<IgnoreType> { Err(crate::FieldErr("type")) }
 }
 
 pub trait IgnoreMut : super::ActivityMut {

apb/src/types/object/activity/intransitive.rs

@@ -10,7 +10,7 @@ strenum! {
 }
 
 pub trait IntransitiveActivity : super::Activity {
-	fn intransitive_activity_type(&self) -> Option<IntransitiveActivityType> { None }
+	fn intransitive_activity_type(&self) -> crate::Field<IntransitiveActivityType> { Err(crate::FieldErr("type")) }
 }
 
 pub trait IntransitiveActivityMut : super::ActivityMut {

apb/src/types/object/activity/mod.rs

@@ -4,7 +4,7 @@ pub mod intransitive;
 pub mod offer;
 pub mod reject;
 
-use crate::{Node, Object, ObjectMut};
+use crate::{Field, FieldErr, Node, Object, ObjectMut};
 use accept::AcceptType;
 use reject::RejectType;
 use offer::OfferType;
@@ -73,7 +73,7 @@ crate::strenum! {
 }
 
 pub trait Activity : Object {
-	fn activity_type(&self) -> Option<ActivityType> { None }
+	fn activity_type(&self) -> Field<ActivityType> { Err(FieldErr("type")) }
 	fn actor(&self) -> Node<Self::Actor> { Node::Empty }
 	fn object(&self) -> Node<Self::Object> { Node::Empty }
 	fn target(&self) -> Node<Self::Object> { Node::Empty }

apb/src/types/object/activity/offer.rs

@@ -8,7 +8,7 @@ strenum! {
 }
 
 pub trait Offer : super::Activity {
-	fn offer_type(&self) -> Option<OfferType> { None }
+	fn offer_type(&self) -> crate::Field<OfferType> { Err(crate::FieldErr("type")) }
 }
 
 pub trait OfferMut : super::ActivityMut {

apb/src/types/object/activity/reject.rs

@@ -8,7 +8,7 @@ strenum! {
 }
 
 pub trait Reject : super::Activity {
-	fn reject_type(&self) -> Option<RejectType> { None }
+	fn reject_type(&self) -> crate::Field<RejectType> { Err(crate::FieldErr("type")) }
 }
 
 pub trait RejectMut : super::ActivityMut {

apb/src/types/object/actor.rs

@@ -1,4 +1,4 @@
-use crate::{Node, Object, ObjectMut};
+use crate::{Field, FieldErr, Node, Object, ObjectMut};
 
 crate::strenum! {
 	pub enum ActorType {
@@ -14,8 +14,8 @@ pub trait Actor : Object {
 	type PublicKey : crate::PublicKey;
 	type Endpoints : Endpoints;
 
-	fn actor_type(&self) -> Option<ActorType> { None }
+	fn actor_type(&self) -> Field<ActorType> { Err(FieldErr("type")) }
-	fn preferred_username(&self) -> Option<&str> { None }
+	fn preferred_username(&self) -> Field<&str> { Err(FieldErr("preferredUsername")) }
 	fn inbox(&self) -> Node<Self::Collection>;
 	fn outbox(&self) -> Node<Self::Collection>;
 	fn following(&self) -> Node<Self::Collection> { Node::Empty }
@@ -28,37 +28,37 @@ pub trait Actor : Object {
 	#[cfg(feature = "activitypub-miscellaneous-terms")]
 	fn moved_to(&self) -> Node<Self::Actor> { Node::Empty }
 	#[cfg(feature = "activitypub-miscellaneous-terms")]
-	fn manually_approves_followers(&self) -> Option<bool> { None }
+	fn manually_approves_followers(&self) -> Field<bool> { Err(FieldErr("manuallyApprovesFollowers")) }
 
 	#[cfg(feature = "activitypub-fe")]
-	fn following_me(&self) -> Option<bool> { None }
+	fn following_me(&self) -> Field<bool> { Err(FieldErr("followingMe")) }
 	#[cfg(feature = "activitypub-fe")]
-	fn followed_by_me(&self) -> Option<bool> { None }
+	fn followed_by_me(&self) -> Field<bool> { Err(FieldErr("followedByMe")) }
 
 	#[cfg(feature = "activitypub-counters")]
-	fn followers_count(&self) -> Option<u64> { None }
+	fn followers_count(&self) -> Field<u64> { Err(FieldErr("followersCount")) }
 	#[cfg(feature = "activitypub-counters")]
-	fn following_count(&self) -> Option<u64> { None }
+	fn following_count(&self) -> Field<u64> { Err(FieldErr("followingCount")) }
 	#[cfg(feature = "activitypub-counters")]
-	fn statuses_count(&self) -> Option<u64> { None }
+	fn statuses_count(&self) -> Field<u64> { Err(FieldErr("statusesCount")) }
 
 	#[cfg(feature = "toot")]
-	fn discoverable(&self) -> Option<bool> { None }
+	fn discoverable(&self) -> Field<bool> { Err(FieldErr("discoverable")) }
 }
 
 pub trait Endpoints : Object {
 	/// Endpoint URI so this actor's clients may access remote ActivityStreams objects which require authentication to access. To use this endpoint, the client posts an x-www-form-urlencoded id parameter with the value being the id of the requested ActivityStreams object. 
-	fn proxy_url(&self) -> Option<&str> { None }
+	fn proxy_url(&self) -> Field<&str> { Err(FieldErr("proxyUrl")) }
 	/// If OAuth 2.0 bearer tokens [RFC6749] [RFC6750] are being used for authenticating client to server interactions, this endpoint specifies a URI at which a browser-authenticated user may obtain a new authorization grant. 
-	fn oauth_authorization_endpoint(&self) -> Option<&str> { None }
+	fn oauth_authorization_endpoint(&self) -> Field<&str> { Err(FieldErr("oauthAuthorizationEndpoint")) }
 	/// If OAuth 2.0 bearer tokens [RFC6749] [RFC6750] are being used for authenticating client to server interactions, this endpoint specifies a URI at which a client may acquire an access token. 
-	fn oauth_token_endpoint(&self) -> Option<&str> { None }
+	fn oauth_token_endpoint(&self) -> Field<&str> { Err(FieldErr("oauthTokenEndpoint")) }
 	/// If Linked Data Signatures and HTTP Signatures are being used for authentication and authorization, this endpoint specifies a URI at which browser-authenticated users may authorize a client's public key for client to server interactions. 
-	fn provide_client_key(&self) -> Option<&str> { None }
+	fn provide_client_key(&self) -> Field<&str> { Err(FieldErr("provideClientKey")) }
 	/// If Linked Data Signatures and HTTP Signatures are being used for authentication and authorization, this endpoint specifies a URI at which a client key may be signed by the actor's key for a time window to act on behalf of the actor in interacting with foreign servers. 
-	fn sign_client_key(&self) -> Option<&str> { None }
+	fn sign_client_key(&self) -> Field<&str> { Err(FieldErr("signClientKey")) }
 	/// An optional endpoint used for wide delivery of publicly addressed activities and activities sent to followers. sharedInbox endpoints SHOULD also be publicly readable OrderedCollection objects containing objects addressed to the Public special collection. Reading from the sharedInbox endpoint MUST NOT present objects which are not addressed to the Public endpoint.
-	fn shared_inbox(&self) -> Option<&str> { None }
+	fn shared_inbox(&self) -> Field<&str> { Err(FieldErr("sharedInbox")) }
 }
 
 pub trait ActorMut : ObjectMut {
@@ -117,33 +117,33 @@ impl Actor for serde_json::Value {
 	type PublicKey = serde_json::Value;
 	type Endpoints = serde_json::Value;
 
-	crate::getter! { actor_type -> type ActorType }
+	crate::getter! { actorType -> type ActorType }
-	crate::getter! { preferred_username::preferredUsername -> &str }
+	crate::getter! { preferredUsername -> &str }
 	crate::getter! { inbox -> node Self::Collection }
 	crate::getter! { outbox -> node Self::Collection }
 	crate::getter! { following -> node Self::Collection }
 	crate::getter! { followers -> node Self::Collection }
 	crate::getter! { liked -> node Self::Collection }
 	crate::getter! { streams -> node Self::Collection }
-	crate::getter! { public_key::publicKey -> node Self::PublicKey }
+	crate::getter! { publicKey -> node Self::PublicKey }
 	crate::getter! { endpoints -> node Self::Endpoints }
 
 	#[cfg(feature = "activitypub-miscellaneous-terms")]
-	crate::getter! { moved_to::movedTo -> node Self::Actor }
+	crate::getter! { movedTo -> node Self::Actor }
 	#[cfg(feature = "activitypub-miscellaneous-terms")]
-	crate::getter! { manually_approves_followers::manuallyApprovedFollowers -> bool }
+	crate::getter! { manuallyApprovesFollowers -> bool }
 
 	#[cfg(feature = "activitypub-fe")]
-	crate::getter! { following_me::followingMe -> bool }
+	crate::getter! { followingMe -> bool }
 	#[cfg(feature = "activitypub-fe")]
-	crate::getter! { followed_by_me::followedByMe -> bool }
+	crate::getter! { followedByMe -> bool }
 
 	#[cfg(feature = "activitypub-counters")]
-	crate::getter! { following_count::followingCount -> u64 }
+	crate::getter! { followingCount -> u64 }
 	#[cfg(feature = "activitypub-counters")]
-	crate::getter! { followers_count::followersCount -> u64 }
+	crate::getter! { followersCount -> u64 }
 	#[cfg(feature = "activitypub-counters")]
-	crate::getter! { statuses_count::statusesCount -> u64 }
+	crate::getter! { statusesCount -> u64 }
 
 	#[cfg(feature = "toot")]
 	crate::getter! { discoverable -> bool }
@@ -151,12 +151,12 @@ impl Actor for serde_json::Value {
 
 #[cfg(feature = "unstructured")]
 impl Endpoints for serde_json::Value {
-	crate::getter! { proxy_url::proxyUrl -> &str }
+	crate::getter! { proxyUrl -> &str }
-	crate::getter! { oauth_authorization_endpoint::oauthAuthorizationEndpoint -> &str }
+	crate::getter! { oauthAuthorizationEndpoint -> &str }
-	crate::getter! { oauth_token_endpoint::oauthTokenEndpoint -> &str }
+	crate::getter! { oauthTokenEndpoint -> &str }
-	crate::getter! { provide_client_key::provideClientKey -> &str }
+	crate::getter! { provideClientKey -> &str }
-	crate::getter! { sign_client_key::signClientKey -> &str }
+	crate::getter! { signClientKey -> &str }
-	crate::getter! { shared_inbox::sharedInbox -> &str }
+	crate::getter! { sharedInbox -> &str }
 }
 
 #[cfg(feature = "unstructured")]
@@ -165,32 +165,32 @@ impl ActorMut for serde_json::Value {
 	type Endpoints = serde_json::Value;
 
 	crate::setter! { actor_type -> type ActorType }
-	crate::setter! { preferred_username::preferredUsername -> &str }
+	crate::setter! { preferredUsername -> &str }
 	crate::setter! { inbox -> node Self::Collection }
 	crate::setter! { outbox -> node Self::Collection }
 	crate::setter! { following -> node Self::Collection }
 	crate::setter! { followers -> node Self::Collection }
 	crate::setter! { liked -> node Self::Collection }
 	crate::setter! { streams -> node Self::Collection }
-	crate::setter! { public_key::publicKey -> node Self::PublicKey }
+	crate::setter! { publicKey -> node Self::PublicKey }
 	crate::setter! { endpoints -> node Self::Endpoints }
 
 	#[cfg(feature = "activitypub-miscellaneous-terms")]
-	crate::setter! { moved_to::movedTo -> node Self::Actor }
+	crate::setter! { movedTo -> node Self::Actor }
 	#[cfg(feature = "activitypub-miscellaneous-terms")]
-	crate::setter! { manually_approves_followers::manuallyApprovedFollowers -> bool }
+	crate::setter! { manuallyApprovesFollowers -> bool }
 
 	#[cfg(feature = "activitypub-fe")]
-	crate::setter! { following_me::followingMe -> bool }
+	crate::setter! { followingMe -> bool }
 	#[cfg(feature = "activitypub-fe")]
-	crate::setter! { followed_by_me::followedByMe -> bool }
+	crate::setter! { followedByMe -> bool }
 
 	#[cfg(feature = "activitypub-counters")]
-	crate::setter! { following_count::followingCount -> u64 }
+	crate::setter! { followingCount -> u64 }
 	#[cfg(feature = "activitypub-counters")]
-	crate::setter! { followers_count::followersCount -> u64 }
+	crate::setter! { followersCount -> u64 }
 	#[cfg(feature = "activitypub-counters")]
-	crate::setter! { statuses_count::statusesCount -> u64 }
+	crate::setter! { statusesCount -> u64 }
 
 	#[cfg(feature = "toot")]
 	crate::setter! { discoverable -> bool }
@@ -198,10 +198,10 @@ impl ActorMut for serde_json::Value {
 
 #[cfg(feature = "unstructured")]
 impl EndpointsMut for serde_json::Value {
-	crate::setter! { proxy_url::proxyUrl -> &str }
+	crate::setter! { proxyUrl -> &str }
-	crate::setter! { oauth_authorization_endpoint::oauthAuthorizationEndpoint -> &str }
+	crate::setter! { oauthAuthorizationEndpoint -> &str }
-	crate::setter! { oauth_token_endpoint::oauthTokenEndpoint -> &str }
+	crate::setter! { oauthTokenEndpoint -> &str }
-	crate::setter! { provide_client_key::provideClientKey -> &str }
+	crate::setter! { provideClientKey -> &str }
-	crate::setter! { sign_client_key::signClientKey -> &str }
+	crate::setter! { signClientKey -> &str }
-	crate::setter! { shared_inbox::sharedInbox -> &str }
+	crate::setter! { sharedInbox -> &str }
 }

apb/src/types/object/collection/mod.rs

@@ -1,7 +1,7 @@
 pub mod page;
 pub use page::CollectionPage;
 
-use crate::{Node, Object, ObjectMut};
+use crate::{Field, FieldErr, Node, Object, ObjectMut};
 
 crate::strenum! {
 	pub enum CollectionType {
@@ -15,9 +15,9 @@ crate::strenum! {
 pub trait Collection : Object {
 	type CollectionPage : CollectionPage;
 
-	fn collection_type(&self) -> Option<CollectionType> { None }
+	fn collection_type(&self) -> Field<CollectionType> { Err(FieldErr("type")) }
 
-	fn total_items(&self) -> Option<u64> { None }
+	fn total_items(&self) -> Field<u64> { Err(FieldErr("totalItems")) }
 	fn current(&self) -> Node<Self::CollectionPage> { Node::Empty }
 	fn first(&self) -> Node<Self::CollectionPage> { Node::Empty }
 	fn last(&self) -> Node<Self::CollectionPage> { Node::Empty }
@@ -42,12 +42,12 @@ impl Collection for serde_json::Value {
 	type CollectionPage = serde_json::Value;
 
 	crate::getter! { collection_type -> type CollectionType }
-	crate::getter! { total_items::totalItems -> u64 }
+	crate::getter! { totalItems -> u64 }
 	crate::getter! { current -> node Self::CollectionPage }
 	crate::getter! { first -> node Self::CollectionPage }
 	crate::getter! { last -> node Self::CollectionPage }
 	crate::getter! { items -> node <Self as Object>::Object }
-	crate::getter! { ordered_items::orderedItems -> node <Self as Object>::Object }
+	crate::getter! { orderedItems -> node <Self as Object>::Object }
 }
 
 #[cfg(feature = "unstructured")]
@@ -55,10 +55,10 @@ impl CollectionMut for serde_json::Value {
 	type CollectionPage = serde_json::Value;
 
 	crate::setter! { collection_type -> type CollectionType }
-	crate::setter! { total_items::totalItems -> u64 }
+	crate::setter! { totalItems -> u64 }
 	crate::setter! { current -> node Self::CollectionPage }
 	crate::setter! { first -> node Self::CollectionPage }
 	crate::setter! { last -> node Self::CollectionPage }
 	crate::setter! { items -> node <Self as Object>::Object }
-	crate::setter! { ordered_items::orderedItems -> node <Self as Object>::Object }
+	crate::setter! { orderedItems -> node <Self as Object>::Object }
 }

apb/src/types/object/collection/page.rs

@@ -14,14 +14,14 @@ pub trait CollectionPageMut : super::CollectionMut {
 
 #[cfg(feature = "unstructured")]
 impl CollectionPage for serde_json::Value {
-	crate::getter! { part_of::partOf -> node Self::Collection }
+	crate::getter! { partOf -> node Self::Collection }
 	crate::getter! { next -> node Self::CollectionPage }
 	crate::getter! { prev -> node Self::CollectionPage }
 }
 
 #[cfg(feature = "unstructured")]
 impl CollectionPageMut for serde_json::Value {
-	crate::setter! { part_of::partOf -> node Self::Collection }
+	crate::setter! { partOf -> node Self::Collection }
 	crate::setter! { next -> node Self::CollectionPage }
 	crate::setter! { prev -> node Self::CollectionPage }
 }

apb/src/types/object/document.rs

@@ -9,7 +9,7 @@ crate::strenum! {
 }
 
 pub trait Document : super::Object {
-	fn document_type(&self) -> Option<DocumentType> { None }
+	fn document_type(&self) -> crate::Field<DocumentType> { Err(crate::FieldErr("type")) }
 }
 
 pub trait DocumentMut : super::ObjectMut {
@@ -19,10 +19,10 @@ pub trait DocumentMut : super::ObjectMut {
 
 #[cfg(feature = "unstructured")]
 impl Document for serde_json::Value {
-	crate::getter! { document_type -> type DocumentType }
+	crate::getter! { documentType -> type DocumentType }
 }
 
 #[cfg(feature = "unstructured")]
 impl DocumentMut for serde_json::Value {
-	crate::setter! { document_type -> type DocumentType }
+	crate::setter! { documentType -> type DocumentType }
 }

apb/src/types/object/mod.rs

@@ -7,7 +7,7 @@ pub mod place;
 pub mod profile;
 pub mod relationship;
 
-use crate::{Base, BaseMut, Node};
+use crate::{Base, BaseMut, Field, FieldErr, Node};
 
 use actor::ActorType;
 use document::DocumentType;
@@ -40,51 +40,51 @@ pub trait Object : Base {
 	type Document : crate::Document;
 	type Activity : crate::Activity;
 
-	fn object_type(&self) -> Option<ObjectType> { None }
+	fn object_type(&self) -> Field<ObjectType> { Err(FieldErr("type")) }
 	fn attachment(&self) -> Node<Self::Object> { Node::Empty }
 	fn attributed_to(&self) -> Node<Self::Actor> { Node::Empty }
 	fn audience(&self) -> Node<Self::Actor> { Node::Empty }
-	fn content(&self) -> Option<&str> { None } // TODO handle language maps
+	fn content(&self) -> Field<&str> { Err(FieldErr("content")) } // TODO handle language maps
 	fn context(&self) -> Node<Self::Object> { Node::Empty } 
-	fn name(&self) -> Option<&str> { None }       // also in link // TODO handle language maps
+	fn name(&self) -> Field<&str> { Err(FieldErr("name")) }       // also in link // TODO handle language maps
-	fn end_time(&self) -> Option<chrono::DateTime<chrono::Utc>> { None }
+	fn end_time(&self) -> Field<chrono::DateTime<chrono::Utc>> { Err(FieldErr("endTime")) }
 	fn generator(&self) -> Node<Self::Actor> { Node::Empty }
 	fn icon(&self) -> Node<Self::Document> { Node::Empty }
 	fn image(&self) -> Node<Self::Document> { Node::Empty }
 	fn in_reply_to(&self) -> Node<Self::Object> { Node::Empty }
 	fn location(&self) -> Node<Self::Object> { Node::Empty }
 	fn preview(&self) -> Node<Self::Object> { Node::Empty }    // also in link
-	fn published(&self) -> Option<chrono::DateTime<chrono::Utc>> { None }
+	fn published(&self) -> Field<chrono::DateTime<chrono::Utc>> { Err(FieldErr("published")) }
-	fn updated(&self) -> Option<chrono::DateTime<chrono::Utc>> { None }
+	fn updated(&self) -> Field<chrono::DateTime<chrono::Utc>> { Err(FieldErr("updated")) }
 	fn replies(&self) -> Node<Self::Collection> { Node::Empty }
 	fn likes(&self) -> Node<Self::Collection> { Node::Empty }
 	fn shares(&self) -> Node<Self::Collection> { Node::Empty }
-	fn start_time(&self) -> Option<chrono::DateTime<chrono::Utc>> { None }
+	fn start_time(&self) -> Field<chrono::DateTime<chrono::Utc>> { Err(FieldErr("startTime")) }
-	fn summary(&self) -> Option<&str> { None }
+	fn summary(&self) -> Field<&str> { Err(FieldErr("summary")) }
 	fn tag(&self) -> Node<Self::Object> { Node::Empty }
 	fn url(&self) -> Node<Self::Link> { Node::Empty }
 	fn to(&self) -> Node<Self::Link> { Node::Empty }
 	fn bto(&self) -> Node<Self::Link> { Node::Empty }
 	fn cc(&self) -> Node<Self::Link> { Node::Empty }
 	fn bcc(&self) -> Node<Self::Link> { Node::Empty }
-	fn media_type(&self) -> Option<&str> { None } // also in link
+	fn media_type(&self) -> Field<&str> { Err(FieldErr("mediaType")) } // also in link
-	fn duration(&self) -> Option<&str> { None } // TODO how to parse xsd:duration ?
+	fn duration(&self) -> Field<&str> { Err(FieldErr("duration")) } // TODO how to parse xsd:duration ?
 
 	#[cfg(feature = "activitypub-miscellaneous-terms")]
-	fn sensitive(&self) -> Option<bool> { None }
+	fn sensitive(&self) -> Field<bool> { Err(FieldErr("sensitive")) }
 	#[cfg(feature = "activitypub-miscellaneous-terms")]
 	fn quote_url(&self) -> Node<Self::Object> { Node::Empty }
 
 	#[cfg(feature = "activitypub-fe")]
-	fn liked_by_me(&self) -> Option<bool> { None }
+	fn liked_by_me(&self) -> Field<bool> { Err(FieldErr("likedByMe")) }
 
 	#[cfg(feature = "ostatus")]
 	fn conversation(&self) -> Node<Self::Object> { Node::Empty }
 
-	fn as_activity(&self) -> Option<&Self::Activity> { None }
+	fn as_activity(&self) -> Result<&Self::Activity, FieldErr> { Err(FieldErr("type")) }
-	fn as_actor(&self) -> Option<&Self::Actor> { None }
+	fn as_actor(&self) -> Result<&Self::Actor, FieldErr> { Err(FieldErr("type")) }
-	fn as_collection(&self) -> Option<&Self::Collection> { None }
+	fn as_collection(&self) -> Result<&Self::Collection, FieldErr> { Err(FieldErr("type")) }
-	fn as_document(&self) -> Option<&Self::Document> { None }
+	fn as_document(&self) -> Result<&Self::Document, FieldErr> { Err(FieldErr("type")) }
 }
 
 pub trait ObjectMut : BaseMut {
@@ -145,18 +145,18 @@ impl Object for serde_json::Value {
 	type Collection = serde_json::Value;
 	type Activity = serde_json::Value;
 
-	crate::getter! { object_type -> type ObjectType }
+	crate::getter! { objectType -> type ObjectType }
 	crate::getter! { attachment -> node <Self as Object>::Object }
-	crate::getter! { attributed_to::attributedTo -> node Self::Actor }
+	crate::getter! { attributedTo -> node Self::Actor }
 	crate::getter! { audience -> node Self::Actor }
 	crate::getter! { content -> &str }
 	crate::getter! { context -> node <Self as Object>::Object }
 	crate::getter! { name -> &str }
-	crate::getter! { end_time::endTime -> chrono::DateTime<chrono::Utc> }
+	crate::getter! { endTime -> chrono::DateTime<chrono::Utc> }
 	crate::getter! { generator -> node Self::Actor }
 	crate::getter! { icon -> node Self::Document }
 	crate::getter! { image -> node Self::Document }
-	crate::getter! { in_reply_to::inReplyTo -> node <Self as Object>::Object }
+	crate::getter! { inReplyTo -> node <Self as Object>::Object }
 	crate::getter! { location -> node <Self as Object>::Object }
 	crate::getter! { preview -> node <Self as Object>::Object }
 	crate::getter! { published -> chrono::DateTime<chrono::Utc> }
@@ -164,53 +164,53 @@ impl Object for serde_json::Value {
 	crate::getter! { replies -> node Self::Collection }
 	crate::getter! { likes -> node Self::Collection }
 	crate::getter! { shares -> node Self::Collection }
-	crate::getter! { start_time::startTime -> chrono::DateTime<chrono::Utc> }
+	crate::getter! { startTime -> chrono::DateTime<chrono::Utc> }
 	crate::getter! { summary -> &str }
 	crate::getter! { tag -> node <Self as Object>::Object }
 	crate::getter! { to -> node Self::Link }
 	crate::getter! { bto -> node Self::Link }
 	crate::getter! { cc -> node Self::Link }
 	crate::getter! { bcc -> node Self::Link }
-	crate::getter! { media_type::mediaType -> &str }
+	crate::getter! { mediaType -> &str }
 	crate::getter! { duration -> &str }
 	crate::getter! { url -> node Self::Link }
 
 	#[cfg(feature = "activitypub-miscellaneous-terms")]
 	crate::getter! { sensitive -> bool }
 	#[cfg(feature = "activitypub-miscellaneous-terms")]
-	crate::getter! { quote_url::quoteUrl -> node <Self as Object>::Object }
+	crate::getter! { quoteUrl -> node <Self as Object>::Object }
 
 	#[cfg(feature = "activitypub-fe")]
-	crate::getter! { liked_by_me::likedByMe -> bool }
+	crate::getter! { likedByMe -> bool }
 
 	#[cfg(feature = "ostatus")]
 	crate::getter! { conversation -> node <Self as Object>::Object }
 
-	fn as_activity(&self) -> Option<&Self::Activity> {
+	fn as_activity(&self) -> Result<&Self::Activity, FieldErr> {
-		match self.object_type() {
+		match self.object_type()? {
-			Some(ObjectType::Activity(_)) => Some(self),
+			ObjectType::Activity(_) => Ok(self),
-			_ => None,
+			_ => Err(FieldErr("type")),
 		}
 	}
 
-	fn as_actor(&self) -> Option<&Self::Actor> {
+	fn as_actor(&self) -> Result<&Self::Actor, FieldErr> {
-		match self.object_type() {
+		match self.object_type()? {
-			Some(ObjectType::Actor(_)) => Some(self),
+			ObjectType::Actor(_) => Ok(self),
-			_ => None,
+			_ => Err(FieldErr("type")),
 		}
 	}
 
-	fn as_collection(&self) -> Option<&Self::Collection> {
+	fn as_collection(&self) -> Result<&Self::Collection, FieldErr> {
-		match self.object_type() {
+		match self.object_type()? {
-			Some(ObjectType::Collection(_)) => Some(self),
+			ObjectType::Collection(_) => Ok(self),
-			_ => None,
+			_ => Err(FieldErr("type")),
 		}
 	}
 
-	fn as_document(&self) -> Option<&Self::Document> {
+	fn as_document(&self) -> Result<&Self::Document, FieldErr> {
-		match self.object_type() {
+		match self.object_type()? {
-			Some(ObjectType::Document(_)) => Some(self),
+			ObjectType::Document(_) => Ok(self),
-			_ => None,
+			_ => Err(FieldErr("type")),
 		}
 	}
 }
@@ -225,16 +225,16 @@ impl ObjectMut for serde_json::Value {
 
 	crate::setter! { object_type -> type ObjectType }
 	crate::setter! { attachment -> node <Self as Object>::Object }
-	crate::setter! { attributed_to::attributedTo -> node Self::Actor }
+	crate::setter! { attributedTo -> node Self::Actor }
 	crate::setter! { audience -> node Self::Actor }
 	crate::setter! { content -> &str }
 	crate::setter! { context -> node <Self as Object>::Object }
 	crate::setter! { name -> &str }
-	crate::setter! { end_time::endTime -> chrono::DateTime<chrono::Utc> }
+	crate::setter! { endTime -> chrono::DateTime<chrono::Utc> }
 	crate::setter! { generator -> node Self::Actor }
 	crate::setter! { icon -> node Self::Document }
 	crate::setter! { image -> node Self::Document }
-	crate::setter! { in_reply_to::inReplyTo -> node <Self as Object>::Object }
+	crate::setter! { inReplyTo -> node <Self as Object>::Object }
 	crate::setter! { location -> node <Self as Object>::Object }
 	crate::setter! { preview -> node <Self as Object>::Object }
 	crate::setter! { published -> chrono::DateTime<chrono::Utc> }
@@ -242,24 +242,24 @@ impl ObjectMut for serde_json::Value {
 	crate::setter! { replies -> node Self::Collection }
 	crate::setter! { likes -> node Self::Collection }
 	crate::setter! { shares -> node Self::Collection }
-	crate::setter! { start_time::startTime -> chrono::DateTime<chrono::Utc> }
+	crate::setter! { startTime -> chrono::DateTime<chrono::Utc> }
 	crate::setter! { summary -> &str }
 	crate::setter! { tag -> node <Self as Object>::Object }
 	crate::setter! { to -> node Self::Link }
 	crate::setter! { bto -> node Self::Link}
 	crate::setter! { cc -> node Self::Link }
 	crate::setter! { bcc -> node Self::Link }
-	crate::setter! { media_type::mediaType -> &str }
+	crate::setter! { mediaType -> &str }
 	crate::setter! { duration -> &str }
 	crate::setter! { url -> node Self::Link }
 
 	#[cfg(feature = "activitypub-miscellaneous-terms")]
 	crate::setter! { sensitive -> bool }
 	#[cfg(feature = "activitypub-miscellaneous-terms")]
-	crate::setter! { quote_url::quoteUrl -> node <Self as Object>::Object }
+	crate::setter! { quoteUrl -> node <Self as Object>::Object }
 
 	#[cfg(feature = "activitypub-fe")]
-	crate::setter! { liked_by_me::likedByMe -> bool }
+	crate::setter! { likedByMe -> bool }
 
 	#[cfg(feature = "ostatus")]
 	crate::setter! { conversation -> node <Self as Object>::Object }

apb/src/types/object/place.rs

@@ -1,10 +1,12 @@
+use crate::{Field, FieldErr};
+
 pub trait Place : super::Object {
-	fn accuracy(&self) -> Option<f64> { None }
+	fn accuracy(&self) -> Field<f64> { Err(FieldErr("accuracy")) }
-	fn altitude(&self) -> Option<f64> { None }
+	fn altitude(&self) -> Field<f64> { Err(FieldErr("altitude")) }
-	fn latitude(&self) -> Option<f64> { None }
+	fn latitude(&self) -> Field<f64> { Err(FieldErr("latitude")) }
-	fn longitude(&self) -> Option<f64> { None }
+	fn longitude(&self) -> Field<f64> { Err(FieldErr("longitude")) }
-	fn radius(&self) -> Option<f64> { None }
+	fn radius(&self) -> Field<f64> { Err(FieldErr("radius")) }
-	fn units(&self) -> Option<&str> { None }
+	fn units(&self) -> Field<&str> { Err(FieldErr("units")) }
 }
 
 pub trait PlaceMut : super::ObjectMut {

apb/src/types/object/tombstone.rs

@@ -1,6 +1,6 @@
 pub trait Tombstone : super::Object {
-	fn former_type(&self) -> Option<crate::BaseType> { None }
+	fn former_type(&self) -> crate::Field<crate::BaseType> { Err(crate::FieldErr("formerType")) }
-	fn deleted(&self) -> Option<chrono::DateTime<chrono::Utc>> { None }
+	fn deleted(&self) -> crate::Field<chrono::DateTime<chrono::Utc>> { Err(crate::FieldErr("deleted")) }
 }
 
 pub trait TombstoneMut : super::ObjectMut {