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use crate::structure::{Edge, GValue, Vertex};
use crate::Token;
use std::collections::{BTreeMap, HashMap};
#[derive(Debug, PartialEq, Clone)]
pub struct Map(HashMap<GKey, GValue>);
impl Map {
pub(crate) fn empty() -> Map {
Map(HashMap::default())
}
}
impl From<HashMap<GKey, GValue>> for Map {
fn from(val: HashMap<GKey, GValue>) -> Self {
Map(val)
}
}
impl From<HashMap<String, GValue>> for Map {
fn from(val: HashMap<String, GValue>) -> Self {
let map = val.into_iter().map(|(k, v)| (GKey::String(k), v)).collect();
Map(map)
}
}
impl From<BTreeMap<String, GValue>> for Map {
fn from(val: BTreeMap<String, GValue>) -> Self {
let map = val.into_iter().map(|(k, v)| (GKey::String(k), v)).collect();
Map(map)
}
}
impl Map {
pub(crate) fn remove<T>(&mut self, key: T) -> Option<GValue>
where
T: Into<GKey>,
{
self.0.remove(&key.into())
}
pub fn iter(&self) -> impl Iterator<Item = (&GKey, &GValue)> {
self.0.iter()
}
pub fn get<T>(&self, key: T) -> Option<&GValue>
where
T: Into<GKey>,
{
self.0.get(&key.into())
}
pub fn len(&self) -> usize {
self.0.len()
}
pub fn is_empty(&self) -> bool {
self.0.is_empty()
}
}
impl<T: Into<GKey>> std::ops::Index<T> for Map {
type Output = GValue;
fn index(&self, key: T) -> &GValue {
self.0.get(&key.into()).expect("no entry found for key")
}
}
impl std::iter::FromIterator<(String, GValue)> for Map {
fn from_iter<I: IntoIterator<Item = (String, GValue)>>(iter: I) -> Self {
Map(iter
.into_iter()
.map(|(k, v)| (GKey::String(k), v))
.collect())
}
}
#[allow(clippy::large_enum_variant)]
#[derive(Debug, PartialEq, Clone, Eq, Hash)]
pub enum GKey {
String(String),
Token(Token),
Vertex(Vertex),
Edge(Edge),
}
impl From<&str> for GKey {
fn from(val: &str) -> Self {
GKey::String(String::from(val))
}
}
impl From<String> for GKey {
fn from(val: String) -> Self {
GKey::String(val)
}
}
impl From<&Vertex> for GKey {
fn from(val: &Vertex) -> Self {
GKey::Vertex(val.clone())
}
}
impl From<&Edge> for GKey {
fn from(val: &Edge) -> Self {
GKey::Edge(val.clone())
}
}