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License, Readme, start documentation

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Done:
- Base

Todo:
- Primitives
- Unparsed
- Object
- Actor
- Activity
- Link
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asonix 2020-05-15 20:08:43 -05:00
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[package]
name = "activitystreams-new"
version = "0.1.0"
license = "GPL-3.0"
authors = ["asonix <asonix@asonix.dog>"]
repository = "https://git.asonix.dog/asonix/activitystreams-sketch"
readme = "README.md"
keywords = ["activitystreams", "activitypub"]
edition = "2018"
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html

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parts of the General Public License. Of course, your program's commands
might be different; for a GUI interface, you would use an "about box".
You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU GPL, see
<http://www.gnu.org/licenses/>.
The GNU General Public License does not permit incorporating your program
into proprietary programs. If your program is a subroutine library, you
may consider it more useful to permit linking proprietary applications with
the library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License. But first, please read
<http://www.gnu.org/philosophy/why-not-lgpl.html>.

244
README.md Normal file
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@ -0,0 +1,244 @@
# ActivityStreams
__A set of Traits and Types that make up the ActivityStreams and ActivityPub specifications__
- [Read the documentation on docs.rs](https://docs.rs/activitystreams)
- [Find the crate on crates.io](https://crates.io/crates/activitystreams)
- [hit me up on Mastodon](https://asonix.dog/@asonix)
## Usage
First, add ActivityStreams to your dependencies
```toml
activitystreams = "0.6.2"
```
### Types
The project is laid out by Kind => vocabulary => Type
So to use an ActivityStreams Video, you'd write
```rust
use activitystreams_new::object::Video;
let video = Video::builder().finish();
```
And to use an ActivityPub profile, you'd write
```rust
use activitystreams_new::object::{ApObject, Profile};
let inner = Profile::builder().finish();
let profile = ApObject::builder()
.inner(inner)
.finish();
```
There's only one kind of Link
```rust
use activitystreams_new::link::Mention;
let mention = Mention::builder().finish();
```
### Fields
Many fields on the provided types are wrapped in `OneOrMany<>` or have a type of `AnyBase`. This
is because the activitystreams spec is very open as to what is considered a valid structure.
For example, the Object type in ActivityStreams has a `summary` field, which can either be
represented as an `xsd:string` or an `rdf:langString`. It also states that the `summary` field
is not `functional`, meaning that any number of `xsd:string` or `rdf:langString`, or a
combination thereof, can be present. This library represents this as `Option<OneOrMany<AnyString>>`.
This resulting type is exactly specific enough to match the following valid ActivityStreams
json, without matching any invalid json.
With no summary:
```json
{}
```
With a sring summary:
```json
{
"summary": "A string"
}
```
With an rdf langstring
```json
{
"summary": {
"@value": "A string",
"@language": "en"
}
}
```
With multiple values
```json
{
"summary": [
{
"@value": "A string",
"@language": "en"
},
"An xsd:string this time"
]
}
```
It may seem like interacting with these types might get unweildy, there are some custom methods
implemented on the `OneOrMany` type depending on what's inside of it.
```rust
fn from_xsd_string<T>(&mut self, T) -> Self;
fn from_rdf_lang_string<T>(&mut self, T) -> Self;
fn as_single_xsd_string(&self) -> Option<&XsdString>;
fn as_single_rdf_langstring(&self) -> Option<&RdfLangString>;
fn single_xsd_string(self) -> Option<XsdString>;
fn single_rdf_lang_string(self) -> Option<RdfLangString>;
fn add_xsd_string<T>(&mut self, T) -> &mut Self;
fn add_rdf_lang_string<T>(&mut self, T) -> &mut Self;
```
These methods provide access to setting and fetching uniformly typed data, as well as deleting
the data. In the setter methods, the type parameter T is bound by
`Into<XsdString>` or `Into<RdfLangString>`. This allows passing values to the method that
can be converted into the types, rather than requiring the caller to perform the conversion.
Types like `XsdString` and `RdfLangString` can be found in the `primitives` module. Unless
you're building your own custom types, you shouldn't need to import them yourself. They each
implement `FromStr` for parsing and `Display` to convert back to strings, as well as `From` and
`Into` or `TryFrom` and `TryInto` for types you might expect them to (e.g.
`XsdNonNegativeInteger` implements `From<u64>` and `Into<u64>`).
### Traits
Since ActivityStreams is a heirarchical structure of data, it's represented as structs containing
other structs. This means that the `context` field, which can be present on any ActivityStreams type,
will be located in the innermost struct. In order to avoid writing code like
`ap_object.collection.object.base.context = Some(context())`, this library provides traits that are
automatically implmeneted for provided types.
For example, the `BaseExt` trait provides the following methods for `context`,
```rust
fn context(&self) -> Option<&OneOrMany<AnyBase>>;
fn set_context<T>(&mut self, context: T) -> &mut Self
where
T: Into<AnyBase>;
fn set_many_contexts<I, T>(&mut self, items: I) -> &mut Self
where
I: IntoIterator<Item = T>,
T: Into<AnyBase>;
fn add_context<T>(&mut self, context: T) -> &mut Self
where
T: Into<AnyBase>;
fn take_context(&mut self) -> Option<OneOrMany<AnyBase>>;
fn delete_context(&mut self) -> &mut Self;
```
For fields with more specific bounds, like `id`,
```rust
fn id(&self) -> Option<&XsdAnyUri>;
fn set_id(&mut self, XsdAnyUri) -> &mut Self;
fn take_id(&self) -> Option<XsdAnyUri>;
fn delete_id(&mut self) -> &mut Self;
```
The full list of extension traits that implement methods like these on types can be found in the
prelude module. By using `use activitystreams_new::prelude::*;` all of the methods will be
implemented for types containing their fields.
### Markers
This library provides a number of traits, such as `Object`, `Link`, `Actor`, `Activity`,
`Collection`, and `CollectionPage`. The majority of these traits exist solely to "mark" types,
meaning they don't provide value, at runtime, but exist to add constraints to generics at
compiletime.
If you want to make a function that manipulates an Activity, but not a normal object, you could
bound the function like so:
```rust
fn manipulator<T>(activity: T) -> Result<&mut ObjectProperties, SomeErrorType>
where
T: Activity + BaseExt,
{
activity
.set_id("https://example.com".parse()?)
.set_context(context())
}
```
### Kinds
This library has a set of unit structs that serialize and deserialize to strings. This is to
enable different ActivityPub Object types to be deserialized into different Named structs.
These can be found in `activitystreams_new::objects::kind`, and similar paths.
To build your own Person struct, for example, you could write
```rust
use activitystreams_new::actor::kind::PersonType;
#[derive(serde::Deserialize, serde::Serialize)]
pub struct MyPerson {
// Do a rename since `type` is not a valid rust field name
#[serde(rename = "type")]
kind: PersonType,
}
```
And this type would only deserialize for JSON where `"type":"Person"`
## Examples
### Basic
```rust
use activitystreams_new::{
context,
object::{ApObject, Video},
prelude::*,
primitives::{XsdAnyUri, XsdString},
};
fn main() -> Result<(), anyhow::Error> {
let mut video: ApObject<Video> = ApObject::default();
video
.set_context(context())
.set_id("https://example.com/@example/lions".parse()?)
.set_media_type("video/webm".parse()?)
.set_url("https://example.com/@example/lions/video.webm".parse::<XsdAnyUri>()?)
.set_summary(XsdString::from("A cool video"))
.set_duration("PT4M20S".parse()?)
.set_shares("https://example.com/@example/lions/video.webm#shares".parse()?);
println!("Video, {:#?}", video);
let s = serde_json::to_string(&video)?;
println!("json, {}", s);
let v: ApObject<Video> = serde_json::from_str(&s)?;
println!("Video again, {:#?}", v);
Ok(())
}
```
## Contributing
Feel free to open issues for anything you find an issue with. Please note that any contributed code will be licensed under the GPLv3.
## License
Copyright © 2020 Riley Trautman
ActivityStreams is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
ActivityStreams is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. This file is part of ActivityStreams.
You should have received a copy of the GNU General Public License along with ActivityStreams. If not, see [http://www.gnu.org/licenses/](http://www.gnu.org/licenses/).

25
examples/basic.rs
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@ -1,24 +1,25 @@
use activitystreams_new::{
context,
object::{ApObject, Video},
prelude::*,
primitives::{XsdAnyUri, XsdString},
};
fn main() -> Result<(), Box<dyn std::error::Error>> {
let video = Video::builder()
.context(context())
.id("https://example.com/@example/lions".parse::<XsdAnyUri>()?)
.url("https://example.com/@example/lions/video.webm".parse::<XsdAnyUri>()?)
.summary(XsdString::from("A cool video"))
.media_type("video/webm".parse()?)
.duration("PT4M20S".parse()?)
.build();
fn main() -> Result<(), anyhow::Error> {
let mut video: ApObject<Video> = ApObject::default();
let v = ApObject::builder().inner(video).build();
video
.set_context(context())
.set_id("https://example.com/@example/lions".parse()?)
.set_media_type("video/webm".parse()?)
.set_url("https://example.com/@example/lions/video.webm".parse::<XsdAnyUri>()?)
.set_summary(XsdString::from("A cool video"))
.set_duration("PT4M20S".parse()?)
.set_shares("https://example.com/@example/lions/video.webm#shares".parse()?);
println!("Video, {:#?}", v);
println!("Video, {:#?}", video);
let s = serde_json::to_string(&v)?;
let s = serde_json::to_string(&video)?;
println!("json, {}", s);

7
examples/de.rs
View file

@ -2,7 +2,6 @@ use activitystreams_new::{
collection::OrderedCollection,
object::{ApObject, Page},
prelude::*,
traits::Extends,
};
use anyhow::Error;
@ -53,14 +52,14 @@ fn main() -> Result<(), Error> {
.many()
.into_iter()
.flatten()
.filter_map(|any_object| any_object.object())
.map(|object| object.solidify().and_then(|o| o.extend()))
.filter_map(|any_base| any_base.take_base())
.map(|base| base.solidify().and_then(|o| o.extend()))
.collect::<Result<Vec<_>, _>>()?;
println!("{:#?}", v);
let v = v
.into_iter()
.map(|o| o.retracts().and_then(|o| o.into_generic()))
.map(|o| o.into_any_base())
.collect::<Result<Vec<_>, _>>()?;
collection.set_many_items(v);

428
src/base.rs
View file

@ -1,3 +1,32 @@
//! Types and traits for dealing with the base attributes common to all ActivityStreams Objects and
//! Links
//!
//! ```rust
//! # fn main() -> Result<(), anyhow::Error> {
//! use activitystreams_new::{
//! context,
//! object::Video,
//! prelude::*,
//! primitives::XsdString,
//! security,
//! };
//! let mut video = Video::default();
//!
//! video
//! .set_id("https://example.com".parse()?)
//! .set_context(context())
//! .add_context(security())
//! .set_name(XsdString::from("Hello"));
//!
//! let any_base = video.into_any_base()?;
//!
//! let mut new_video = Video::default();
//!
//! new_video.set_preview(any_base);
//! #
//! # Ok(())
//! # }
//! ```
use crate::{
either::Either,
markers,
@ -6,20 +35,100 @@ use crate::{
};
use typed_builder::TypedBuilder;
/// Implements conversion between Base<Kind> and other ActivityStreams objects defined in this
/// crate
pub trait Extends<Kind>: Sized {
/// The erro produced must be a StdError
type Error: std::error::Error;
/// Produce an object from the Base
fn extends(base: Base<Kind>) -> Result<Self, Self::Error>;
/// Produce a base from the object
fn retracts(self) -> Result<Base<Kind>, Self::Error>;
}
/// A helper function implemented for all Extends types to easily produce an AnyBase from a given
/// object.
///
/// This is important because many APIs in this crate deal with AnyBases.
pub trait ExtendsExt<Kind>: Extends<Kind> {
/// Create an AnyBase from the given object
///
/// ```rust
/// # fn main() -> Result<(), anyhow::Error> {
/// use activitystreams_new::{object::Video, prelude::*};
/// let video = Video::default();
///
/// let any_base = video.into_any_base()?;
/// #
/// # Ok(())
/// # }
/// ```
fn into_any_base(self) -> Result<AnyBase, Self::Error>
where
Kind: serde::ser::Serialize,
Self::Error: From<serde_json::Error>,
{
AnyBase::from_extended(self)
}
/// Create an object from an AnyBase
///
/// Before calling this, make sure the `AnyBase::is_base()` and `AnyBase::kind` match your
/// expectations
///
/// ```rust
/// # fn main() -> Result<(), anyhow::Error> {
/// use activitystreams_new::{object::Video, prelude::*};
/// # let video = Video::default();
/// # let any_base = video.into_any_base()?;
/// let video = Video::from_any_base(any_base)?;
/// #
/// # Ok(())
/// # }
/// ```
fn from_any_base(any_base: AnyBase) -> Result<Option<Self>, Self::Error>
where
Kind: serde::de::DeserializeOwned,
Self::Error: From<serde_json::Error>,
{
if let Some(base) = any_base.take_base() {
let my_base = base.solidify()?;
let extended = my_base.extend::<Self>()?;
return Ok(Some(extended));
}
Ok(None)
}
}
/// Implementation trait for deriving Base methods for a type
///
/// Any type Implementating AsBase will automatically gain methods provided by BaseExt
pub trait AsBase<Kind>: markers::Base {
fn base_ref(&self) -> &Base<Kind>;
fn base_mut(&mut self) -> &mut Base<Kind>;
}
/// Helper methods for interacting with Base types
///
/// This trait represents methods valid for Any ActivityStreams type, regardless of whether it's a
/// Link or an Object.
///
/// Documentation for the fields related to these methods can be found on the `Base` struct
pub trait BaseExt<Kind>: AsBase<Kind> {
/// Fetch the context for the current object
///
/// ```rust
/// # use activitystreams_new::object::Video;
/// # let video = Video::default();
/// #
/// use activitystreams_new::prelude::*;
///
/// let video_context = video.context();
/// ```
fn context<'a>(&'a self) -> Option<&'a OneOrMany<AnyBase>>
where
Kind: 'a,
@ -27,6 +136,18 @@ pub trait BaseExt<Kind>: AsBase<Kind> {
self.base_ref().context.as_ref()
}
/// Set the context for the current object
///
/// This overwrites the contents of context
///
/// ```rust
/// # use activitystreams_new::object::Video;
/// # let mut video = Video::default();
/// #
/// use activitystreams_new::{context, prelude::*};
///
/// video.set_context(context());
/// ```
fn set_context<T>(&mut self, context: T) -> &mut Self
where
T: Into<AnyBase>,
@ -35,6 +156,18 @@ pub trait BaseExt<Kind>: AsBase<Kind> {
self
}
/// Set many contexts for the current object
///
/// This overwrites the contents of context
///
/// ```rust
/// # use activitystreams_new::object::Video;
/// # let mut video = Video::default();
/// #
/// use activitystreams_new::{context, prelude::*, security};
///
/// video.set_many_contexts(vec![context(), security()]);
/// ```
fn set_many_contexts<I, T>(&mut self, items: I) -> &mut Self
where
I: IntoIterator<Item = T>,
@ -45,6 +178,20 @@ pub trait BaseExt<Kind>: AsBase<Kind> {
self
}
/// Add a context to the current object
///
/// This does not overwrite the contents of context, only appends a new item
///
/// ```rust
/// # use activitystreams_new::object::Video;
/// # let mut video = Video::default();
/// #
/// use activitystreams_new::{context, prelude::*, security};
///
/// video
/// .add_context(context())
/// .add_context(security());
/// ```
fn add_context<T>(&mut self, context: T) -> &mut Self
where
T: Into<AnyBase>,
@ -60,15 +207,41 @@ pub trait BaseExt<Kind>: AsBase<Kind> {
self
}
/// Take the context from the current object, leaving nothing
///
/// ```rust
/// # use activitystreams_new::object::Video;
/// # let mut video = Video::default();
/// #
/// use activitystreams_new::prelude::*;
///
/// if let Some(context) = video.take_context() {
/// println!("{:?}", context);
/// }
/// ```
fn take_context(&mut self) -> Option<OneOrMany<AnyBase>> {
self.base_mut().context.take()
}
/// Delete the context from the current object
///
/// ```rust
/// # use activitystreams_new::{context, object::Video};
/// # let mut video = Video::default();
/// # video.set_context(context());
/// #
/// use activitystreams_new::prelude::*;
///
/// assert!(video.context().is_some());
/// video.delete_context();
/// assert!(video.context().is_none());
/// ```
fn delete_context(&mut self) -> &mut Self {
self.base_mut().context = None;
self
}
/// Fetch the id for the current object
fn id<'a>(&'a self) -> Option<&'a XsdAnyUri>
where
Kind: 'a,
@ -76,20 +249,26 @@ pub trait BaseExt<Kind>: AsBase<Kind> {
self.base_ref().id.as_ref()
}
/// Set the id for the current object
///
/// This overwrites the contents of id
fn set_id(&mut self, id: XsdAnyUri) -> &mut Self {
self.base_mut().id = Some(id);
self
}
/// Take the id from the current object, leaving nothing
fn take_id(&mut self) -> Option<XsdAnyUri> {
self.base_mut().id.take()
}
/// Delete the id from the current object
fn delete_id(&mut self) -> &mut Self {
self.base_mut().id = None;
self
}
/// Fetch the kind for the current object
fn kind<'a>(&'a self) -> Option<&'a Kind>
where
Kind: 'a,
@ -97,20 +276,26 @@ pub trait BaseExt<Kind>: AsBase<Kind> {
self.base_ref().kind.as_ref()
}
/// Set the kind for the current object
///
/// This overwrites the contents of kind
fn set_kind(&mut self, kind: Kind) -> &mut Self {
self.base_mut().kind = Some(kind);
self
}
/// Take the kind from the current object, leaving nothing
fn take_kind(&mut self) -> Option<Kind> {
self.base_mut().kind.take()
}
/// Delete the kind from the current object
fn delete_kind(&mut self) -> &mut Self {
self.base_mut().kind = None;
self
}
/// Fetch the name for the current object
fn name<'a>(&'a self) -> Option<&'a OneOrMany<AnyString>>
where
Kind: 'a,
@ -118,6 +303,9 @@ pub trait BaseExt<Kind>: AsBase<Kind> {
self.base_ref().name.as_ref()
}
/// Set the name for the current object
///
/// This overwrites the contents of name
fn set_name<T>(&mut self, name: T) -> &mut Self
where
T: Into<AnyString>,
@ -126,6 +314,9 @@ pub trait BaseExt<Kind>: AsBase<Kind> {
self
}
/// Set many names for the current object
///
/// This overwrites the contents of name
fn set_many_names<I, T>(&mut self, items: I) -> &mut Self
where
I: IntoIterator<Item = T>,
@ -136,6 +327,9 @@ pub trait BaseExt<Kind>: AsBase<Kind> {
self
}
/// Add a name to the current object
///
/// This does not overwrite the contents of name, only appends a new item
fn add_name<T>(&mut self, name: T) -> &mut Self
where
T: Into<AnyString>,
@ -151,15 +345,18 @@ pub trait BaseExt<Kind>: AsBase<Kind> {
self
}
/// Take the name from the current object, leaving nothing
fn take_name(&mut self) -> Option<OneOrMany<AnyString>> {
self.base_mut().name.take()
}
/// Delete the name from the current object
fn delete_name(&mut self) -> &mut Self {
self.base_mut().name = None;
self
}
/// Fetch the media type for the current object
fn media_type<'a>(&'a self) -> Option<&'a MimeMediaType>
where
Kind: 'a,
@ -167,20 +364,26 @@ pub trait BaseExt<Kind>: AsBase<Kind> {
self.base_ref().media_type.as_ref()
}
/// Set the media type for the current object
///
/// This overwrites the contents of media_type
fn set_media_type(&mut self, media_type: MimeMediaType) -> &mut Self {
self.base_mut().media_type = Some(media_type);
self
}
/// Take the media type from the current object, leaving nothing
fn take_media_type(&mut self) -> Option<MimeMediaType> {
self.base_mut().media_type.take()
}
/// Delete the media type from the current object
fn delete_media_type(&mut self) -> &mut Self {
self.base_mut().media_type = None;
self
}
/// Fetch the preview for the current object
fn preview<'a>(&'a self) -> Option<&'a OneOrMany<AnyBase>>
where
Kind: 'a,
@ -188,6 +391,9 @@ pub trait BaseExt<Kind>: AsBase<Kind> {
self.base_ref().preview.as_ref()
}
/// Set the preview for the current object
///
/// This overwrites the contents of preview
fn set_preview<T>(&mut self, preview: T) -> &mut Self
where
T: Into<AnyBase>,
@ -196,6 +402,9 @@ pub trait BaseExt<Kind>: AsBase<Kind> {
self
}
/// Set many previews for the current object
///
/// This overwrites the contents of preview
fn set_many_previews<I, T>(&mut self, items: I) -> &mut Self
where
I: IntoIterator<Item = T>,
@ -206,6 +415,9 @@ pub trait BaseExt<Kind>: AsBase<Kind> {
self
}
/// Add a preview to the current object
///
/// This does not overwrite the contents of preview, only appends an item
fn add_preview<T>(&mut self, preview: T) -> &mut Self
where
T: Into<AnyBase>,
@ -221,10 +433,12 @@ pub trait BaseExt<Kind>: AsBase<Kind> {
self
}
/// Take the preview from the current object, leaving nothing
fn take_preview(&mut self) -> Option<OneOrMany<AnyBase>> {
self.base_mut().preview.take()
}
/// Delete the preview from the current object
fn delete_preview(&mut self) -> &mut Self {
self.base_mut().preview = None;
self
@ -235,45 +449,125 @@ pub trait BaseExt<Kind>: AsBase<Kind> {
#[serde(transparent)]
struct IdOrBase(Either<XsdAnyUri, Box<Base<serde_json::Value>>>);
/// A type that can represent Any ActivityStreams type
///
/// A type in activitystreams can be four things
/// - An Object
/// - A Link
/// - The ID of that Link or Object
/// - A string representing that Link or Object
#[derive(Clone, Debug, serde::Deserialize, serde::Serialize)]
#[serde(transparent)]
pub struct AnyBase(Either<IdOrBase, XsdString>);
/// A representation of the common fields between Links and Objects in ActivityStreams
///
/// Although the spec does not define a type more abstract that Object or Link, it does define
/// fields present in both, so for the sake of "Everything derives from something," I've
/// implemented a type.
#[derive(Clone, Debug, Default, serde::Deserialize, serde::Serialize, TypedBuilder)]
#[serde(rename_all = "camelCase")]
#[builder(doc)]
pub struct Base<Kind> {
/// Identifies the context within which the object exists or an activity was performed.
///
/// The notion of "context"used is intentionally vague. The intended function is to serve as a
/// means of grouping objects and activities that share a common originating context or
/// purpose. An example could be all activities relating to a common project or event.
///
/// - Range: Object | Link
/// - Functional: false
#[serde(rename = "@context")]
#[serde(alias = "context")]
#[serde(skip_serializing_if = "Option::is_none")]
#[builder(default, setter(strip_option, into))]
pub context: Option<OneOrMany<AnyBase>>,
/// Provides the globally unique identifier for an Object or Link.
///
/// The id property is expressed as an absolute IRI in the spec, but for now is represented as
/// a string.
///
/// - Range: xsd:anyUri
/// - Functional: true
///
/// ### From ActivityStreams's deprecation notes
///
/// When processing Activity Streams 1.0 documents and converting those to 2.0, implementations
/// ought to treat id as an alias for the JSON-LD @id key word[.]
#[serde(skip_serializing_if = "Option::is_none")]
#[builder(default, setter(strip_option, into))]
pub id: Option<XsdAnyUri>,
/// The `type` field
///
/// ### From JSON-LD's `type` documentation
///
/// This section is non-normative.
///
/// In Linked Data, it is common to specify the type of a graph node; in many cases, this can
/// be inferred based on the properties used within a given node object, or the property for
/// which a node is a value. For example, in the schema.org vocabulary, the givenName property
/// is associated with a Person. Therefore, one may reason that if a node object contains the
/// property givenName, that the type is a Person; making this explicit with @type helps to
/// clarify the association.
///
/// The type of a particular node can be specified using the @type keyword. In Linked Data,
/// types are uniquely identified with an IRI.
///
/// ### From ActivityStreams's deprecation notes
///
/// When processing Activity Streams 1.0 documents and converting those to 2.0, implementations
/// ought to treat [...] the objectType and verb properties as aliases for the JSON-LD @type
/// keyword.
#[serde(rename = "type")]
#[serde(alias = "@type")]
#[serde(alias = "objectType")]
#[serde(alias = "verb")]
#[serde(skip_serializing_if = "Option::is_none")]
#[builder(default, setter(strip_option))]
pub kind: Option<Kind>,
/// A simple, human-readable, plain-text name for the object.
///
/// HTML markup MUST NOT be included. The name MAY be expressed using multiple language-tagged values.
///
/// - Range: xsd:string | rdf:langString
/// - Functional: false
#[serde(skip_serializing_if = "Option::is_none")]
#[builder(default, setter(strip_option, into))]
pub name: Option<OneOrMany<AnyString>>,
/// When used on an Object, identifies the MIME media type of the value of the content property.
///
/// If not specified, the content property is assumed to contain text/html content.
///
/// - Range: Mime Media Type
/// - Functional: true
#[serde(skip_serializing_if = "Option::is_none")]
#[builder(default, setter(strip_option))]
pub media_type: Option<MimeMediaType>,
/// Identifies an entity that provides a preview of this object.
///
/// - Range: Object | Link
/// - Functional: false
#[serde(skip_serializing_if = "Option::is_none")]
#[builder(default, setter(strip_option, into))]
pub preview: Option<OneOrMany<AnyBase>>,
/// Any additional data present on the object if parsed from JSON
///
/// This is used to extend the Base into other kinds of objects and links
#[serde(flatten)]
#[builder(default)]
pub unparsed: Unparsed,
}
impl Base<serde_json::Value> {
/// Convert this Base<serde_json::Value> into a Base<Kind>
///
/// This is required before extending Base into the other types found in this crate
pub fn solidify<Kind>(self) -> Result<Base<Kind>, serde_json::Error>
where
Kind: serde::de::DeserializeOwned,
@ -283,6 +577,18 @@ impl Base<serde_json::Value> {
}
impl<Kind> Base<Kind> {
/// Extend the Base into any other ActivityStreams type provided in this crate
///
/// ```rust
/// # fn main() -> Result<(), anyhow::Error> {
/// # use activitystreams_new::{base::Base, object::{Video, kind::VideoType}};
/// # let base = Base::<VideoType>::default();
/// #
/// let video = base.extend::<Video>()?;
/// #
/// # Ok(())
/// # }
/// ```
pub fn extend<T>(self) -> Result<T, T::Error>
where
T: Extends<Kind>,
@ -290,6 +596,18 @@ impl<Kind> Base<Kind> {
T::extends(self)
}
/// Retract any other ActivityStreams type into a Base<Kind>
///
/// ```rust
/// # fn main() -> Result<(), anyhow::Error> {
/// # use activitystreams_new::{base::Base, object::Video};
/// # let video = Video::default();
/// #
/// let base = Base::retract(video)?;
/// #
/// # Ok(())
/// # }
/// ```
pub fn retract<T>(t: T) -> Result<Self, T::Error>
where
T: Extends<Kind>,
@ -297,6 +615,9 @@ impl<Kind> Base<Kind> {
t.retracts()
}
/// Convert this Base into a Base<serde_json::Value>
///
/// This is required before putting a Base into an AnyBase type
pub fn into_generic(self) -> Result<Base<serde_json::Value>, serde_json::Error>
where
Kind: serde::ser::Serialize,
@ -304,6 +625,22 @@ impl<Kind> Base<Kind> {
self.try_map_kind(serde_json::to_value)
}
/// An inffalible conversion from Base<T> to Base<U> where there is a known path from T to U
///
/// ```rust
/// use activitystreams_new::{base::Base, prelude::*};
///
/// let mut base = Base::<String>::default();
/// base.set_kind("Hey".to_owned());
///
/// let new_base = base.map_kind(|kind| match kind.as_str() {
/// "Create" => 1,
/// "Update" => 5,
/// _ => 0,
/// });
///
/// assert!(*new_base.kind().unwrap() == 0);
/// ```
pub fn map_kind<NewKind>(self, f: impl Fn(Kind) -> NewKind) -> Base<NewKind> {
Base {
kind: self.kind.map(f),
@ -316,6 +653,7 @@ impl<Kind> Base<Kind> {
}
}
/// A fallible conversion from Base<T> to Base<U>
pub fn try_map_kind<NewKind, E>(
self,
f: impl Fn(Kind) -> Result<NewKind, E>,
@ -337,50 +675,107 @@ impl<Kind> Base<Kind> {
}
impl AnyBase {
/// Convert any type that is extended from Base<Kind> into an AnyBase for storing
pub fn from_extended<T, Kind>(extended: T) -> Result<Self, T::Error>
where
T: Extends<Kind>,
T::Error: From<serde_json::Error>,
Kind: serde::ser::Serialize,
{
Ok(Base::retract(extended)?.into_generic()?.into())
}
/// Check if this object is an XsdAnyUri
pub fn is_xsd_any_uri(&self) -> bool {
self.0
.as_ref()
.left()
.and_then(|l| l.as_xsd_any_uri())
.is_some()
}
/// Check if this object is an XsdString
pub fn is_xsd_string(&self) -> bool {
self.0.as_ref().right().is_some()
}
/// Check if this object is a Base<serde_json::Value>
pub fn is_base(&self) -> bool {
self.0.as_ref().left().and_then(|l| l.as_base()).is_some()
}
/// Get the id from the current object
///
/// This method checks if the current object _is_ an ID, and then falls back on the `id` field
/// within the `Base<serde_json::Value>` if that exists
pub fn id(&self) -> Option<&XsdAnyUri> {
self.as_xsd_any_uri()
.or_else(|| self.as_base().and_then(|base| base.id.as_ref()))
}
/// Get the kind from the current object
///
/// This method only produces a value if the current object is a `Base<serde_json::Value>`
pub fn kind(&self) -> Option<&serde_json::Value> {
self.as_base().and_then(|base| base.kind.as_ref())
}
/// Get the object as an XsdAnyUri
pub fn as_xsd_any_uri(&self) -> Option<&XsdAnyUri> {
self.0.as_ref().left().and_then(|l| l.as_xsd_any_uri())
}
/// Get the object as an XsdString
pub fn as_xsd_string(&self) -> Option<&XsdString> {
self.0.as_ref().right()
}
/// Get the object as a Base<serde_json::Value>
pub fn as_base(&self) -> Option<&Base<serde_json::Value>> {
self.0.as_ref().left().and_then(|l| l.as_base())
}
pub fn id(self) -> Option<XsdAnyUri> {
/// Take the XsdAnyUri from the Object
pub fn take_xsd_any_uri(self) -> Option<XsdAnyUri> {
self.0.left().and_then(|l| l.id())
}
pub fn xsd_string(self) -> Option<XsdString> {
/// Take the XsdString from the Object
pub fn take_xsd_string(self) -> Option<XsdString> {
self.0.right()
}
pub fn base(self) -> Option<Base<serde_json::Value>> {
/// Take the Base<serde_json::Value> from the Object
pub fn take_base(self) -> Option<Base<serde_json::Value>> {
self.0.left().and_then(|l| l.base())
}
/// Replace the object with the provided XsdAnyUri
pub fn set_xsd_any_uri(&mut self, id: XsdAnyUri) {
self.0 = Either::Left(IdOrBase::from_xsd_any_uri(id));
}
/// Replace the object with the provided Base<serde_json::Value>
pub fn set_base(&mut self, base: Base<serde_json::Value>) {
self.0 = Either::Left(IdOrBase::from_base(base));
}
/// Replace the object with the provided XsdString
pub fn set_xsd_string(&mut self, xsd_string: XsdString) {
self.0 = Either::Right(xsd_string);
}
/// Create an AnyBase from an XsdAnyUri
pub fn from_xsd_any_uri(id: XsdAnyUri) -> Self {
AnyBase(Either::Left(IdOrBase::from_xsd_any_uri(id)))
}
/// Create an AnyBase from a Base<serde_json::Value>
pub fn from_base(base: Base<serde_json::Value>) -> Self {
AnyBase(Either::Left(IdOrBase::from_base(base)))
}
/// Create an AnyBase from an XsdString
pub fn from_xsd_string(xsd_string: XsdString) -> Self {
AnyBase(Either::Right(xsd_string))
}
@ -413,65 +808,80 @@ impl IdOrBase {
}
impl OneOrMany<AnyBase> {
/// Get a single XsdAnyUri from the object, if that is what is contained
pub fn as_single_xsd_any_uri(&self) -> Option<&XsdAnyUri> {
self.as_one().and_then(|inner| inner.as_xsd_any_uri())
}
/// Get a single XsdString from the object, if that is what is contained
pub fn as_single_xsd_string(&self) -> Option<&XsdString> {
self.as_one().and_then(|inner| inner.as_xsd_string())
}
/// Get a single Base<serde_json::Value> from the object, if that is what is contained
pub fn as_single_base(&self) -> Option<&Base<serde_json::Value>> {
self.as_one().and_then(|inner| inner.as_base())
}
/// Take a single XsdAnyUri from the object, if that is what is contained
pub fn single_xsd_any_uri(self) -> Option<XsdAnyUri> {
self.one().and_then(|inner| inner.id())
self.one().and_then(|inner| inner.take_xsd_any_uri())
}
/// Take a single XsdString from the object, if that is what is contained
pub fn single_xsd_string(self) -> Option<XsdString> {
self.one().and_then(|inner| inner.xsd_string())
self.one().and_then(|inner| inner.take_xsd_string())
}
/// Take a single Base<serde_json::Value> from the object, if that is what is contained
pub fn single_base(self) -> Option<Base<serde_json::Value>> {
self.one().and_then(|inner| inner.base())
self.one().and_then(|inner| inner.take_base())
}
/// Create a OneOrMany<AnyBase> from an XsdAnyUri
pub fn from_xsd_any_uri(id: XsdAnyUri) -> Self {
OneOrMany(Either::Left(AnyBase::from_xsd_any_uri(id)))
}
/// Create a OneOrMany<AnyBase> from an XsdString
pub fn from_xsd_string(xsd_string: XsdString) -> Self {
OneOrMany(Either::Left(AnyBase::from_xsd_string(xsd_string)))
}
/// Create a OneOrMany<AnyBase> from a Base<serde_json::Value>
pub fn from_base(base: Base<serde_json::Value>) -> Self {
OneOrMany(Either::Left(AnyBase::from_base(base)))
}
/// Overwrite the current object with an XsdAnyUri
pub fn set_single_xsd_any_uri(&mut self, id: XsdAnyUri) -> &mut Self {
self.0 = Either::Left(AnyBase::from_xsd_any_uri(id));
self
}
/// Overwrite the current object with an XsdString
pub fn set_single_xsd_string(&mut self, xsd_string: XsdString) -> &mut Self {
self.0 = Either::Left(AnyBase::from_xsd_string(xsd_string));
self
}
/// Overwrite the current object with a Base<serde_json::Value>
pub fn set_single_base(&mut self, base: Base<serde_json::Value>) -> &mut Self {
self.0 = Either::Left(AnyBase::from_base(base));
self
}
/// Append an XsdAnyUri to the current object
pub fn add_xsd_any_uri(&mut self, id: XsdAnyUri) -> &mut Self {
self.add(AnyBase::from_xsd_any_uri(id))
}
/// Append an XsdString to the current object
pub fn add_xsd_string(&mut self, xsd_string: XsdString) -> &mut Self {
self.add(AnyBase::from_xsd_string(xsd_string))
}
/// Append a Base<serde_json::Value> to the current object
pub fn add_base(&mut self, base: Base<serde_json::Value>) -> &mut Self {
self.add(AnyBase::from_base(base))
}
@ -495,6 +905,12 @@ impl<Kind> AsBase<Kind> for Base<Kind> {
}
}
impl<T, Kind> ExtendsExt<Kind> for T
where
T: Extends<Kind>,
T::Error: From<serde_json::Error>,
{
}
impl<T, Kind> BaseExt<Kind> for T where T: AsBase<Kind> {}
impl From<Base<serde_json::Value>> for AnyBase {

2
src/lib.rs
View file

@ -23,7 +23,7 @@ pub mod prelude {
QuestionExt, TargetRefExt,
},
actor::ApActorExt,
base::BaseExt,
base::{BaseExt, ExtendsExt},
collection::{CollectionExt, CollectionPageExt, OrderedCollectionPageExt},
link::LinkExt,
object::{ApObjectExt, ObjectExt, PlaceExt, ProfileExt, RelationshipExt, TombstoneExt},

38
src/primitives.rs
View file

@ -34,28 +34,28 @@ impl AnyString {
pub fn from_xsd_string<T>(string: T) -> Self
where
XsdString: From<T>,
T: Into<XsdString>,
{
AnyString(Either::Left(string.into()))
}
pub fn from_rdf_lang_string<T>(string: T) -> Self
where
RdfLangString: From<T>,
T: Into<RdfLangString>,
{
AnyString(Either::Right(string.into()))
}
pub fn set_xsd_string<T>(&mut self, string: T)
where
XsdString: From<T>,
T: Into<XsdString>,
{
self.0 = Either::Left(string.into());
}
pub fn set_rdf_lang_string<T>(&mut self, string: T)
where
RdfLangString: From<T>,
T: Into<RdfLangString>,
{
self.0 = Either::Right(string.into());
}
@ -83,17 +83,31 @@ impl OneOrMany<AnyString> {
pub fn from_xsd_string<T>(string: T) -> Self
where
XsdString: From<T>,
T: Into<XsdString>,
{
Self::from_one(AnyString::from_xsd_string(string))
}
pub fn from_rdf_lang_string<T>(string: T) -> Self
where
RdfLangString: From<T>,
T: Into<RdfLangString>,
{
Self::from_one(AnyString::from_rdf_lang_string(string))
}
pub fn add_xsd_string<T>(&mut self, string: T) -> &mut Self
where
T: Into<XsdString>,
{
self.add(string.into())
}
pub fn add_rdf_lang_string<T>(&mut self, string: T) -> &mut Self
where
T: Into<RdfLangString>,
{
self.add(string.into())
}
}
impl<T> OneOrMany<T> {
@ -130,7 +144,7 @@ impl<T> OneOrMany<T> {
pub fn set_one<U>(&mut self, u: U) -> &mut Self
where
T: From<U>,
U: Into<T>,
{
self.0 = Either::Left(u.into());
self
@ -138,15 +152,15 @@ impl<T> OneOrMany<T> {
pub fn set_many<U>(&mut self, items: impl IntoIterator<Item = U>) -> &mut Self
where
T: From<U>,
U: Into<T>,
{
self.0 = Either::Right(items.into_iter().map(T::from).collect());
self.0 = Either::Right(items.into_iter().map(Into::into).collect());
self
}
pub fn add<U>(&mut self, u: U) -> &mut Self
where
T: From<U>,
U: Into<T>,
{
let mut v = match std::mem::replace(&mut self.0, Either::Right(vec![])) {
Either::Left(one) => vec![one],
@ -159,13 +173,13 @@ impl<T> OneOrMany<T> {
pub fn add_many<U>(&mut self, items: impl IntoIterator<Item = U>) -> &mut Self
where
T: From<U>,
U: Into<T>,
{
let mut v = match std::mem::replace(&mut self.0, Either::Right(vec![])) {
Either::Left(one) => vec![one],
Either::Right(v) => v,
};
v.extend(items.into_iter().map(T::from));
v.extend(items.into_iter().map(Into::into));
self.0 = Either::Right(v);
self
}

8
src/unparsed.rs
View file

@ -14,8 +14,12 @@ pub trait UnparsedMutExt: UnparsedMut {
where
T: serde::ser::Serialize,
{
self.unparsed_mut()
.insert(key.to_owned(), serde_json::to_value(value)?);
let value = serde_json::to_value(value)?;
if !value.is_null() {
self.unparsed_mut().insert(key.to_owned(), value);
}
Ok(self)
}
}