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Add top-level documenation, fix get_many types

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asonix 2020-03-11 13:37:22 -05:00
parent 28694e786d
commit c8e1249974
6 changed files with 259 additions and 23 deletions
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4
Cargo.toml
View file

@ -1,7 +1,7 @@
[package]
name = "activitystreams"
description = "Activity Streams in Rust"
version = "0.4.0-alpha.2"
version = "0.4.0-alpha.3"
license = "GPL-3.0"
authors = ["asonix <asonix@asonix.dog>"]
repository = "https://git.asonix.dog/Aardwolf/activitystreams"
@ -17,7 +17,7 @@ primitives = ["chrono", "mime", "serde", "thiserror", "url"]
types = ["derive", "kinds", "primitives", "serde"]
[dependencies]
activitystreams-derive = { version = "0.4.0-alpha.1", path = "activitystreams-derive", optional = true}
activitystreams-derive = { version = "0.4.0-alpha.2", path = "activitystreams-derive", optional = true}
typetag = "0.1.4"
chrono = { version = "0.4", optional = true }
mime = { version = "0.3", optional = true }

2
README.md
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@ -12,7 +12,7 @@ For basic use, add the following to your Cargo.toml
```toml
# Cargo.toml
activitystreams = "0.4.0-alpha.2"
activitystreams = "0.4.0-alpha.3"
```
And then use it in your project

2
activitystreams-derive/Cargo.toml
View file

@ -1,7 +1,7 @@
[package]
name = "activitystreams-derive"
description = "Derive macros for activitystreams"
version = "0.4.0-alpha.1"
version = "0.4.0-alpha.2"
license = "GPL-3.0"
authors = ["asonix <asonix.dev@gmail.com>"]
repository = "https://git.asonix.dog/Aardwolf/activitystreams"

26
activitystreams-derive/README.md
View file

@ -10,20 +10,22 @@ Add the required crates to your `Cargo.toml`
```toml
# Cargo.toml
activitystreams-derive = "0.4-alpha.0"
activitystreams-traits = "0.4-alpha.0"
activitystreams-types = "0.4-alpha.0"
activitystreams = "0.4.0-alpha.3"
serde = { version = "1.0", features = ["derive"] }
```
And then in your project
```rust
use activitystreams_derive::{properties, PropRefs, UnitString};
use activitystreams_traits::Object;
use activitystreams_types::object::{
properties::ObjectProperties,
ObjectExt,
// derive macros
use activitystreams::{
properties,
PropRefs,
UnitString
};
// traits
use activitystreams::Object;
// properties
use activitystreams::object::properties::ObjectProperties;
/// Using the UnitString derive macro
///
@ -86,7 +88,7 @@ pub struct My {
/// Derive AsRef<ObjectProperties> and AsMut<ObjectProperties>
///
/// as well as the Object and ObjectExt traits
/// as well as the Object trait
#[serde(flatten)]
#[activitystreams(Object)]
properties: ObjectProperties,
@ -95,9 +97,11 @@ pub struct My {
fn main() -> Result<(), Box<dyn std::error::Error>> {
let mut my = My::default();
my.as_mut().set_required_key("Hello")?;
let mprops: &mut MyProperties = my.as_mut();
mprops.set_required_key("Hello")?;
assert_eq!(my.as_ref().get_required_key(), "Hello");
let mprops: &MyProperties = my.as_ref();
assert_eq!(mprops.get_required_key(), "Hello");
Ok(())
}
```

21
activitystreams-derive/src/lib.rs
View file

@ -551,7 +551,7 @@ pub fn properties(tokens: TokenStream) -> TokenStream {
String::new(),
format!("`{}` isn't functional, meaning it can only be represented as a single `{}`", fname, ty),
String::new(),
format!("This enum's variants representa ll valid types to construct a `{}`", fname),
format!("This enum's variants represent all valid types to construct a `{}`", fname),
]);
quote! {
#doc_lines
@ -944,15 +944,21 @@ pub fn properties(tokens: TokenStream) -> TokenStream {
}
};
let doc_line = to_doc(&format!("Get `{}` as a slice of `{}`s", fname, term_ty.to_token_stream()));
let doc_line = to_doc(&format!("Get `{}` as a vec of `&{}`s", fname, v_ty.to_token_stream()));
let get_many = quote! {
#doc_line
///
/// This returns `None` if
/// - There is only one value present
pub fn #get_many_ident(&self) -> Option<&[#term_ty]> {
///
/// The returned vec will be empty if no values match the requested
/// type, but values are present.
pub fn #get_many_ident(&self) -> Option<Vec<&#v_ty>> {
match self.#fname {
#ty::Array(ref array) => Some(array),
#ty::Array(ref array) => Some(array.iter().filter_map(|i| match i {
#term_ty::#v_ty(item) => Some(item),
_ => None,
}).collect()),
_ => None,
}
}
@ -1017,9 +1023,12 @@ pub fn properties(tokens: TokenStream) -> TokenStream {
/// This returns `None` if
/// - There is no value present
/// - There is only one value present
pub fn #get_many_ident(&self) -> Option<&[#term_ty]> {
pub fn #get_many_ident(&self) -> Option<Vec<&#v_ty>> {
match self.#fname {
Some(#ty::Array(ref array)) => Some(array),
Some(#ty::Array(ref array)) => Some(array.iter().filter_map(|i| match i {
#term_ty::#v_ty(item) => Some(item),
_ => None,
}).collect()),
_ => None,
}
}

227
src/lib.rs
View file

@ -21,11 +21,234 @@
//!
//! A set of Traits and Types that make up the Activity Streams specification
//!
//! ## Usage
//!
//! First, add ActivityStreams to your dependencies
//! ```toml
//! activitystreams = "0.4.0-alpha.3"
//! ```
//!
//! ### Types
//!
//! The project is laid out by Kind => vocabulary => Type
//!
//! So to use an ActivityStreams Video, you'd write
//! ```rust
//! use activitystreams::object::streams::Video;
//! ```
//!
//! And to use an ActivityPub profile, you'd write
//! ```rust
//! use activitystreams::object::apub::Profile;
//! ```
//!
//! Link is a little different, since there's only one defined link type, called Mention.
//! ```rust
//! use activitystreams::link::Mention;
//! ```
//!
//! ### Properties
//!
//! Each concrete type implements `AsRef<>` for each of their properties fields. A basic
//! ActivityStreams object will implement `AsRef<ObjectProperties>`, while an ActivityPub Actor
//! might implement `AsRef<ObjectProperties>`, `AsRef<ApObjectProperties>`, and
//! `AsRef<ApActorProperties>`.
//!
//! The Properties types can be found near the kind they're associated with. `ObjectProperties` and
//! `ApObjectProperties` are located in `activitystreams::object::properties`.
//!
//! The Properties types are generated by the `properties` macro, which attempts to create fields
//! that represent exactly the bounds of the ActivityStreams and ActivityPub specifications.
//!
//! 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. To represent this, the `properties` macro generates a
//! couple `enum` types.
//!
//! First, it generates `ObjectPropertiesSummaryTermEnum`, which is a "terminating" enum.
//! "terminating" in this context means it is the smallest unit of the type. This enum has two
//! variants, named after the types they contain, `XsdString(...)` and `RdfLangString(...)`.
//!
//! Next, it generates `ObjectPropertiesSummaryEnum`, which contains two variants, `Term(...)` and
//! `Array(...)`. The `Term` variant contains an `ObjectPropertiesSummaryTermEnum`, and the `Array`
//! variant contains a `Vec<ObjectPropertiesSummaryTermEnum>`.
//!
//! Finally, when declaring the field, it generates `summary: Option<ObjectPropertiesSummaryEnum>`,
//! since `summary` is not a required field.
//!
//! 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, so the `properties` macro
//! also generates methods for interacting with each field.
//!
//! ```ignore
//! fn set_summary_xsd_string<T>(&mut self, T) -> Result<...>;
//! fn set_summary_rdf_lang_string<T>(&mut self, T) -> Result<...>;
//! fn set_many_summary_xsd_strings<T>(&mut self, Vec<T>) -> Result<...>;
//! fn set_many_summary_rdf_lang_strings<T>(&mut self, Vec<T>) -> Result<...>;
//!
//! fn delete_summary(&mut self) -> &mut Self;
//!
//! fn get_summary_xsd_string(&self) -> Option<XsdString>;
//! fn get_summary_rdf_lang_string(&self) -> Option<RdfLangString>;
//! fn get_many_summary_xsd_strings(&self) -> Option<Vec<&XsdString>>;
//! fn get_many_summary_rdf_lang_strings(&self) -> Option<Vec<&RdfLangString>>;
//! ```
//! 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
//! `TryInto<XsdString>` or `TryInto<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>`).
//!
//! For some fields, like `id`, there is only one valid type. methods generated for fields like
//! these will leave out the type name from the function name.
//!
//! ```ignore
//! fn set_id<T>(&mut self, T) -> Result<...>;
//! fn delete_id(&mut self) -> &mut Self;
//! fn get_id(&self) -> Option<XsdAnyUri>;
//! ```
//!
//! ### Traits
//!
//! 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:
//! ```ignore
//! fn my_manipulator<T>(some_activity: T) -> Result<&mut ObjectProperties, SomeErrorType>
//! where
//! T: Activity + AsMut<ObjectProperties>,
//! {
//! some_activity.as_mut().set_whatever_tbh()
//! }
//! ```
//!
//! ### 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::objects::kind`, and similar paths.
//!
//! To build your own Person struct, for example, you could write
//! ```ignore
//! use activitystreams::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"`
//!
//! ### Features
//! There are a number of features that can be disabled in this crate. By default, everything is
//! enabled.
//!
//! ```toml
//! activitystreams = { version = "0.4.0", default-features = "false", features = ["derive"] }
//! ```
//!
//! | feature | what you get |
//! | ---------- | --------------------------------------------------------- |
//! | none | Just the Marker Traits |
//! | derive | Marker Traits + derive macros from activitystreams-derive |
//! | kinds | Marker Traits + derive macros + Kind UnitStructs |
//! | primitives | Marker Traits + Primitive values |
//! | types | Everything, this is the default |
//!
//! ## Examples
//!
//! ### Basic
//!
//! ```rust
//! use activitystreams::object::{streams::Video, properties::ObjectProperties};
//! use anyhow::Error;
//!
//! // We perform configuration in a dedicated function to specify which Properties type we want to
//! // perform the operations on.
//! fn configure_video(mut v: impl AsMut<ObjectProperties>) -> Result<(), Error> {
//! v.as_mut()
//! .set_context_xsd_any_uri("https://www.w3.org/ns/activitystreams")?
//! .set_id("https://example.com/@example/lions")?
//! .set_url_xsd_any_uri("https://example.com/@example/lions/video.webm")?
//! .set_name_xsd_string("My Cool Video")?
//! .set_summary_xsd_string("A video about some cool lions")?
//! .set_media_type("video/webm")?
//! .set_duration("PT4M20S")?;
//!
//! Ok(())
//! }
//!
//! fn main() -> Result<(), Error> {
//! let mut v = Video::default();
//!
//! configure_video(&mut v)?;
//!
//! println!("Video, {:#?}", v);
//!
//! let s = serde_json::to_string(&v)?;
//!
//! println!("json, {}", s);
//!
//! let v: Video = serde_json::from_str(&s)?;
//!
//! println!("Video again, {:#?}", v);
//!
//! Ok(())
//! }
//! ```
//!
//! ### Intermediate
//!
//! ```rust
//! use activitystreams::{
//! context,
//! object::{
@ -33,7 +256,7 @@
//! ObjectProperties,
//! ProfileProperties
//! },
//! streams::Profile,
//! apub::Profile,
//! },
//! primitives::XsdAnyUri,
//! Actor,
@ -145,7 +368,7 @@
//! #[activitystreams(None)]
//! pub my_properties: MyProperties,
//!
//! /// Derive AsRef/AsMut/Link for My -> MyProperties
//! /// Derive AsRef/AsMut/Link for My -> LinkProperties
//! #[activitystreams(Link)]
//! pub link_properties: LinkProperties,
//! }