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path: root/src/lib.rs
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#![doc = include_str!("../README.md")]
#![warn(clippy::pedantic, clippy::cargo)]

#[cfg(feature = "parse-knuffel")]
use knuffel::{Decode, DecodeScalar};

mod schema_schema;
pub use schema_schema::SCHEMA_SCHEMA;

pub trait BuildFromRef {
    fn ref_to(query: impl Into<String>) -> Self;
}

fn get_id_from_ref(r#ref: &str) -> Option<&str> {
    r#ref
        .strip_prefix(r#"[id=""#)
        .and_then(|r#ref| r#ref.strip_suffix(r#""]"#))
}

#[derive(Debug, PartialEq, Eq, Default)]
#[cfg_attr(feature = "parse-knuffel", derive(Decode))]
pub struct Schema {
    #[cfg_attr(feature = "parse-knuffel", knuffel(child))]
    pub document: Document,
}

impl Schema {
    /// Panics if ref is not of the form `[id="foo"]`.
    pub fn resolve_node_ref(&self, r#ref: &str) -> Option<&Node> {
        let id = get_id_from_ref(r#ref).expect("invalid ref");
        self.document
            .nodes
            .iter()
            .filter_map(|node| node.find_node_by_id(id))
            .next()
    }

    /// Panics if ref is not of the form `[id="foo"]`.
    pub fn resolve_prop_ref(&self, r#ref: &str) -> Option<&Prop> {
        let id = get_id_from_ref(r#ref).expect("invalid ref");
        self.document
            .nodes
            .iter()
            .filter_map(|node| node.find_prop_by_id(id))
            .next()
    }

    /// Panics if ref is not of the form `[id="foo"]`.
    pub fn resolve_value_ref(&self, r#ref: &str) -> Option<&Value> {
        let id = get_id_from_ref(r#ref).expect("invalid ref");
        self.document
            .nodes
            .iter()
            .filter_map(|node| node.find_value_by_id(id))
            .next()
    }

    /// Panics if ref is not of the form `[id="foo"]`.
    pub fn resolve_children_ref(&self, r#ref: &str) -> Option<&Children> {
        let id = get_id_from_ref(r#ref).expect("invalid ref");
        self.document
            .nodes
            .iter()
            .filter_map(|node| node.find_children_by_id(id))
            .next()
    }
}

#[cfg(feature = "parse-knuffel")]
impl Schema {
    pub fn parse(
        schema_kdl: &str,
    ) -> Result<Self, knuffel::Error<impl knuffel::traits::ErrorSpan>> {
        knuffel::parse("<Schema::parse argument>", schema_kdl)
    }
}

#[derive(Debug, PartialEq, Eq, Default)]
#[cfg_attr(feature = "parse-knuffel", derive(Decode))]
pub struct Document {
    #[cfg_attr(feature = "parse-knuffel", knuffel(child))]
    pub info: Info,
    #[cfg_attr(feature = "parse-knuffel", knuffel(children(name = "node")))]
    pub nodes: Vec<Node>,
}

#[derive(Debug, PartialEq, Eq, Default)]
#[cfg_attr(feature = "parse-knuffel", derive(Decode))]
pub struct Info {
    #[cfg_attr(feature = "parse-knuffel", knuffel(children(name = "title")))]
    pub title: Vec<TextValue>,
    #[cfg_attr(feature = "parse-knuffel", knuffel(children(name = "description")))]
    pub description: Vec<TextValue>,
    #[cfg_attr(feature = "parse-knuffel", knuffel(children(name = "author")))]
    pub authors: Vec<Person>,
    #[cfg_attr(feature = "parse-knuffel", knuffel(children(name = "contributor")))]
    pub contributors: Vec<Person>,
    #[cfg_attr(feature = "parse-knuffel", knuffel(children(name = "link")))]
    pub links: Vec<Link>,
    #[cfg_attr(feature = "parse-knuffel", knuffel(children(name = "license")))]
    pub licenses: Vec<License>,
    #[cfg_attr(feature = "parse-knuffel", knuffel(child))]
    pub published: Option<Date>,
    #[cfg_attr(feature = "parse-knuffel", knuffel(child))]
    pub modified: Option<Date>,
}

#[derive(Debug, PartialEq, Eq)]
#[cfg_attr(feature = "parse-knuffel", derive(Decode))]
pub struct TextValue {
    #[cfg_attr(feature = "parse-knuffel", knuffel(argument))]
    pub text: String,
    #[cfg_attr(feature = "parse-knuffel", knuffel(property))]
    pub lang: Option<String>,
}

#[derive(Debug, PartialEq, Eq)]
#[cfg_attr(feature = "parse-knuffel", derive(Decode))]
pub struct Person {
    #[cfg_attr(feature = "parse-knuffel", knuffel(argument))]
    pub name: String,
    #[cfg_attr(feature = "parse-knuffel", knuffel(property))]
    pub orcid: Option<String>,
    #[cfg_attr(feature = "parse-knuffel", knuffel(children(name = "link")))]
    pub links: Vec<Link>,
}

#[derive(Debug, PartialEq, Eq)]
#[cfg_attr(feature = "parse-knuffel", derive(Decode))]
pub struct Link {
    #[cfg_attr(feature = "parse-knuffel", knuffel(argument))]
    pub iri: String,
    #[cfg_attr(feature = "parse-knuffel", knuffel(property))]
    pub rel: Option<String>,
    #[cfg_attr(feature = "parse-knuffel", knuffel(property))]
    pub lang: Option<String>,
}

#[derive(Debug, PartialEq, Eq)]
#[cfg_attr(feature = "parse-knuffel", derive(Decode))]
pub struct License {
    #[cfg_attr(feature = "parse-knuffel", knuffel(argument))]
    pub name: String,
    #[cfg_attr(feature = "parse-knuffel", knuffel(property))]
    pub spdx: Option<String>,
    #[cfg_attr(feature = "parse-knuffel", knuffel(children(name = "link")))]
    pub link: Vec<Link>,
}

#[derive(Debug, PartialEq, Eq)]
#[cfg_attr(feature = "parse-knuffel", derive(Decode))]
pub struct Date {
    #[cfg_attr(feature = "parse-knuffel", knuffel(argument))]
    pub date: String,
    #[cfg_attr(feature = "parse-knuffel", knuffel(property))]
    pub time: Option<String>,
}

#[derive(Debug, PartialEq, Eq, Default)]
#[cfg_attr(feature = "parse-knuffel", derive(Decode))]
pub struct Node {
    #[cfg_attr(feature = "parse-knuffel", knuffel(argument))]
    pub name: Option<String>,
    #[cfg_attr(feature = "parse-knuffel", knuffel(property))]
    pub id: Option<String>,
    #[cfg_attr(feature = "parse-knuffel", knuffel(property))]
    pub description: Option<String>,
    #[cfg_attr(feature = "parse-knuffel", knuffel(property))]
    pub ref_: Option<String>,
    #[cfg_attr(feature = "parse-knuffel", knuffel(child, unwrap(argument)))]
    pub min: Option<usize>,
    #[cfg_attr(feature = "parse-knuffel", knuffel(child, unwrap(argument)))]
    pub max: Option<usize>,
    #[cfg_attr(feature = "parse-knuffel", knuffel(children(name = "prop")))]
    pub props: Vec<Prop>,
    #[cfg_attr(feature = "parse-knuffel", knuffel(children(name = "value")))]
    pub values: Vec<Value>,
    #[cfg_attr(feature = "parse-knuffel", knuffel(children(name = "children")))]
    pub children: Vec<Children>,
}

impl Node {
    fn find_node_by_id(&self, id: &str) -> Option<&Node> {
        if self.id.as_deref() == Some(id) {
            Some(self)
        } else {
            self.children
                .iter()
                .filter_map(|children| children.find_node_by_id(id))
                .next()
        }
    }

    fn find_prop_by_id(&self, id: &str) -> Option<&Prop> {
        self.props
            .iter()
            .filter_map(|prop| prop.find_prop_by_id(id))
            .chain(
                self.children
                    .iter()
                    .filter_map(|children| children.find_prop_by_id(id)),
            )
            .next()
    }

    fn find_value_by_id(&self, id: &str) -> Option<&Value> {
        self.values
            .iter()
            .filter_map(|value| value.find_value_by_id(id))
            .chain(
                self.children
                    .iter()
                    .filter_map(|children| children.find_value_by_id(id)),
            )
            .next()
    }

    fn find_children_by_id(&self, id: &str) -> Option<&Children> {
        self.children
            .iter()
            .filter_map(|children| children.find_children_by_id(id))
            .next()
    }
}

impl BuildFromRef for Node {
    fn ref_to(query: impl Into<String>) -> Self {
        Self {
            ref_: Some(query.into()),
            ..Self::default()
        }
    }
}

#[derive(Debug, PartialEq, Eq, Default)]
#[cfg_attr(feature = "parse-knuffel", derive(Decode))]
pub struct Prop {
    #[cfg_attr(feature = "parse-knuffel", knuffel(argument))]
    pub key: Option<String>,
    #[cfg_attr(feature = "parse-knuffel", knuffel(property))]
    pub id: Option<String>,
    #[cfg_attr(feature = "parse-knuffel", knuffel(property))]
    pub description: Option<String>,
    #[cfg_attr(feature = "parse-knuffel", knuffel(property))]
    pub ref_: Option<String>,
    #[cfg_attr(feature = "parse-knuffel", knuffel(child))]
    pub required: bool,
    #[cfg_attr(feature = "parse-knuffel", knuffel(children))]
    pub validations: Vec<Validation>,
}

impl Prop {
    fn find_prop_by_id(&self, id: &str) -> Option<&Prop> {
        if self.id.as_deref() == Some(id) {
            Some(self)
        } else {
            None
        }
    }
}

impl BuildFromRef for Prop {
    fn ref_to(query: impl Into<String>) -> Self {
        Self {
            ref_: Some(query.into()),
            ..Self::default()
        }
    }
}

#[derive(Debug, PartialEq, Eq, Default)]
#[cfg_attr(feature = "parse-knuffel", derive(Decode))]
pub struct Value {
    #[cfg_attr(feature = "parse-knuffel", knuffel(property))]
    pub id: Option<String>,
    #[cfg_attr(feature = "parse-knuffel", knuffel(property))]
    pub description: Option<String>,
    #[cfg_attr(feature = "parse-knuffel", knuffel(property))]
    pub ref_: Option<String>,
    #[cfg_attr(feature = "parse-knuffel", knuffel(child, unwrap(argument)))]
    pub min: Option<usize>,
    #[cfg_attr(feature = "parse-knuffel", knuffel(child, unwrap(argument)))]
    pub max: Option<usize>,
    #[cfg_attr(feature = "parse-knuffel", knuffel(children))]
    pub validations: Vec<Validation>,
}

impl Value {
    fn find_value_by_id(&self, id: &str) -> Option<&Value> {
        if self.id.as_deref() == Some(id) {
            Some(self)
        } else {
            None
        }
    }
}

impl BuildFromRef for Value {
    fn ref_to(query: impl Into<String>) -> Self {
        Self {
            ref_: Some(query.into()),
            ..Self::default()
        }
    }
}

#[derive(Debug, PartialEq, Eq, Default)]
#[cfg_attr(feature = "parse-knuffel", derive(Decode))]
pub struct Children {
    #[cfg_attr(feature = "parse-knuffel", knuffel(property))]
    pub id: Option<String>,
    #[cfg_attr(feature = "parse-knuffel", knuffel(property))]
    pub description: Option<String>,
    #[cfg_attr(feature = "parse-knuffel", knuffel(property))]
    pub ref_: Option<String>,
    #[cfg_attr(feature = "parse-knuffel", knuffel(children(name = "node")))]
    pub nodes: Vec<Node>,
}

impl Children {
    fn find_node_by_id(&self, id: &str) -> Option<&Node> {
        self.nodes
            .iter()
            .filter_map(|node| node.find_node_by_id(id))
            .next()
    }

    fn find_prop_by_id(&self, id: &str) -> Option<&Prop> {
        self.nodes
            .iter()
            .filter_map(|node| node.find_prop_by_id(id))
            .next()
    }

    fn find_value_by_id(&self, id: &str) -> Option<&Value> {
        self.nodes
            .iter()
            .filter_map(|node| node.find_value_by_id(id))
            .next()
    }

    fn find_children_by_id(&self, id: &str) -> Option<&Children> {
        if self.id.as_deref() == Some(id) {
            Some(self)
        } else {
            self.nodes
                .iter()
                .filter_map(|node| node.find_children_by_id(id))
                .next()
        }
    }
}

impl BuildFromRef for Children {
    fn ref_to(query: impl Into<String>) -> Self {
        Self {
            ref_: Some(query.into()),
            ..Self::default()
        }
    }
}

#[derive(Debug, PartialEq, Eq)]
#[cfg_attr(feature = "parse-knuffel", derive(Decode))]
pub enum Validation {
    Type(#[cfg_attr(feature = "parse-knuffel", knuffel(argument))] String),
    Enum(#[cfg_attr(feature = "parse-knuffel", knuffel(arguments))] Vec<String>),
    Pattern(#[cfg_attr(feature = "parse-knuffel", knuffel(argument))] String),
    Format(#[cfg_attr(feature = "parse-knuffel", knuffel(arguments))] Vec<Format>),
}

#[derive(Clone, Debug, PartialEq, Eq)]
#[cfg_attr(feature = "parse-knuffel", derive(DecodeScalar))]
pub enum Format {
    DateTime,
    Date,
    Time,
    Duration,
    Decimal,
    Currency,
    Country2,
    Country3,
    CountrySubdivision,
    Email,
    IdnEmail,
    Hostname,
    IdnHostname,
    Ipv4,
    Ipv6,
    Url,
    UrlReference,
    Irl,
    IrlReference,
    UrlTemplate,
    Uuid,
    Regex,
    Base64,
    KdlQuery,
}