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// Small structs that don't have their own unit.
use {Signature, Member, Path, Interface as IfaceName};
use std::collections::{BTreeMap, btree_map};
use std::sync::Arc;
pub type ArcMap<K, V> = BTreeMap<K, Arc<V>>;
#[derive(Clone, Debug)]
pub enum IterE<'a, V: 'a> {
Path(btree_map::Values<'a, Arc<Path<'static>>, Arc<V>>),
Iface(btree_map::Values<'a, Arc<IfaceName<'static>>, Arc<V>>),
Member(btree_map::Values<'a, Member<'static>, Arc<V>>),
String(btree_map::Values<'a, String, Arc<V>>),
}
#[derive(Clone, Debug)]
/// Iterator struct, returned from iterator methods on Tree, Objectpath and Interface.
pub struct Iter<'a, V: 'a>(IterE<'a, V>);
impl<'a, V: 'a> From<IterE<'a, V>> for Iter<'a, V> { fn from(x: IterE<'a, V>) -> Iter<'a, V> { Iter(x) }}
impl<'a, V: 'a> Iterator for Iter<'a, V> {
type Item = &'a Arc<V>;
fn next(&mut self) -> Option<Self::Item> {
match self.0 {
IterE::Path(ref mut x) => x.next(),
IterE::Iface(ref mut x) => x.next(),
IterE::Member(ref mut x) => x.next(),
IterE::String(ref mut x) => x.next(),
}
}
}
#[derive(Clone, Debug, PartialOrd, Ord, PartialEq, Eq)]
/// A D-Bus Argument.
pub struct Argument(Option<String>, Signature<'static>);
impl Argument {
/// Create a new Argument.
pub fn new(name: Option<String>, sig: Signature<'static>) -> Argument { Argument(name, sig) }
/// Descriptive name (if any).
pub fn name(&self) -> Option<&str> { self.0.as_ref().map(|s| &**s) }
/// Type signature of argument.
pub fn signature(&self) -> &Signature<'static> { &self.1 }
fn introspect(&self, indent: &str, dir: &str) -> String {
let n = self.0.as_ref().map(|n| format!("name=\"{}\" ", n)).unwrap_or("".into());
format!("{}<arg {}type=\"{}\"{}/>\n", indent, n, self.1, dir)
}
}
pub fn introspect_args(args: &[Argument], indent: &str, dir: &str) -> String {
args.iter().fold("".to_string(), |aa, az| format!("{}{}", aa, az.introspect(indent, dir)))
}
// Small helper struct to reduce memory somewhat for objects without annotations
#[derive(Clone, Debug, Default)]
pub struct Annotations(Option<BTreeMap<String, String>>);
impl Annotations {
pub fn new() -> Annotations { Annotations(None) }
pub fn insert<N: Into<String>, V: Into<String>>(&mut self, n: N, v: V) {
if self.0.is_none() { self.0 = Some(BTreeMap::new()) }
self.0.as_mut().unwrap().insert(n.into(), v.into());
}
pub fn introspect(&self, indent: &str) -> String {
self.0.as_ref().map(|s| s.iter().fold("".into(), |aa, (ak, av)| {
format!("{}{}<annotation name=\"{}\" value=\"{}\"/>\n", aa, indent, ak, av)
})).unwrap_or(String::new())
}
}
// Doesn't work, conflicting impls
// impl<S: Into<Signature>> From<S> for Argument
impl From<Signature<'static>> for Argument {
fn from(t: Signature<'static>) -> Argument { Argument(None, t) }
}
impl<'a> From<&'a str> for Argument {
fn from(t: &'a str) -> Argument { Argument(None, String::from(t).into()) }
}
impl<N: Into<String>, S: Into<Signature<'static>>> From<(N, S)> for Argument {
fn from((n, s): (N, S)) -> Argument { Argument(Some(n.into()), s.into()) }
}
pub trait Introspect {
// At some point we might want to switch to fmt::Write / fmt::Formatter for performance...
fn xml_name(&self) -> &'static str;
fn xml_params(&self) -> String;
fn xml_contents(&self) -> String;
}
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