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// Copyright (c) 2014-2015 Guillaume Pinot <texitoi(a)texitoi.eu>
//
// This work is free. You can redistribute it and/or modify it under
// the terms of the Do What The Fuck You Want To Public License,
// Version 2, as published by Sam Hocevar. See the COPYING file for
// more details.
//! This module proposes objects to modelize OpenStreetMap objects.
//!
//! There are 3 types of objects: nodes, ways and relations.
use serde::{Deserialize, Serialize};
use smartstring::alias::String;
use std::iter::FromIterator;
use std::ops::{Deref, DerefMut};
/// Tags represents the features of the objects. See the
/// [OpenStreetMap wiki page about
/// tags](http://wiki.openstreetmap.org/wiki/Tags) for more
/// information.
#[derive(Debug, Default, Clone, PartialEq, Eq, PartialOrd, Ord, Hash, Serialize, Deserialize)]
pub struct Tags(::flat_map::FlatMap<String, String>);
impl Tags {
/// Creates a new, empty `Tags` object.
pub fn new() -> Tags {
Tags(::flat_map::FlatMap::new())
}
/// Returns if it contains a tag with the given `key` and `value`.
pub fn contains(&self, key: &str, value: &str) -> bool {
self.0.get(key).map_or(false, |v| v.as_str() == value)
}
/// Consume tags into inner FlatMap representation
pub fn into_inner(self) -> ::flat_map::FlatMap<String, String> {
self.0
}
}
impl Deref for Tags {
type Target = ::flat_map::FlatMap<String, String>;
fn deref(&self) -> &Self::Target {
&self.0
}
}
impl DerefMut for Tags {
fn deref_mut(&mut self) -> &mut Self::Target {
&mut self.0
}
}
impl FromIterator<(String, String)> for Tags {
fn from_iter<T: IntoIterator<Item = (String, String)>>(iter: T) -> Self {
Tags(iter.into_iter().collect())
}
}
/// A node identifier
#[derive(Debug, PartialEq, Eq, PartialOrd, Ord, Clone, Hash, Copy, Serialize, Deserialize)]
pub struct NodeId(pub i64);
/// A way identifier
#[derive(Debug, PartialEq, Eq, PartialOrd, Ord, Clone, Hash, Copy, Serialize, Deserialize)]
pub struct WayId(pub i64);
/// A relation identifier
#[derive(Debug, PartialEq, Eq, PartialOrd, Ord, Clone, Hash, Copy, Serialize, Deserialize)]
pub struct RelationId(pub i64);
/// An OpenStreetMap object identifier
#[derive(Debug, PartialEq, Eq, PartialOrd, Ord, Clone, Hash, Copy, Serialize, Deserialize)]
pub enum OsmId {
/// The identifier of a node
Node(NodeId),
/// The identifier of a way
Way(WayId),
/// The identifier of a relation
Relation(RelationId),
}
impl OsmId {
/// Returns `true` if the id is a node id.
pub fn is_node(&self) -> bool {
self.node().is_some()
}
/// Returns `true` if the id is a way id.
pub fn is_way(&self) -> bool {
self.way().is_some()
}
/// Returns `true` if the id is a relation id.
pub fn is_relation(&self) -> bool {
self.relation().is_some()
}
/// Returns the `NodeId` if it is a node, otherwise returns `None`.
pub fn node(&self) -> Option<NodeId> {
match *self {
OsmId::Node(id) => Some(id),
_ => None,
}
}
/// Returns the `WayId` if it is a way, otherwise returns `None`.
pub fn way(&self) -> Option<WayId> {
match *self {
OsmId::Way(id) => Some(id),
_ => None,
}
}
/// Returns the `RelationId` if it is a relation, otherwise returns `None`.
pub fn relation(&self) -> Option<RelationId> {
match *self {
OsmId::Relation(id) => Some(id),
_ => None,
}
}
/// Returns the inner id.
pub fn inner_id(&self) -> i64 {
match *self {
OsmId::Node(n) => n.0,
OsmId::Way(n) => n.0,
OsmId::Relation(n) => n.0,
}
}
}
/// An OpenStreetMap object.
#[derive(Debug, PartialEq, PartialOrd, Clone, Serialize, Deserialize)]
pub enum OsmObj {
/// A node
Node(Node),
/// A way
Way(Way),
/// A relation
Relation(Relation),
}
impl OsmObj {
/// Returns the tags of the object.
pub fn tags(&self) -> &Tags {
match *self {
OsmObj::Node(ref node) => &node.tags,
OsmObj::Way(ref way) => &way.tags,
OsmObj::Relation(ref rel) => &rel.tags,
}
}
/// Returns the id of the object.
pub fn id(&self) -> OsmId {
match *self {
OsmObj::Node(ref node) => OsmId::Node(node.id),
OsmObj::Way(ref way) => OsmId::Way(way.id),
OsmObj::Relation(ref rel) => OsmId::Relation(rel.id),
}
}
/// Returns `true` if the object is a node.
pub fn is_node(&self) -> bool {
self.node().is_some()
}
/// Returns `true` if the object is a way.
pub fn is_way(&self) -> bool {
self.way().is_some()
}
/// Returns `true` if the object is a relation.
pub fn is_relation(&self) -> bool {
self.relation().is_some()
}
/// Returns a reference to the `Node` if `self` is a node, otherwise returns `None`.
pub fn node(&self) -> Option<&Node> {
match *self {
OsmObj::Node(ref n) => Some(n),
_ => None,
}
}
/// Returns a reference to the `Way` if `self` is a way, otherwise returns `None`.
pub fn way(&self) -> Option<&Way> {
match *self {
OsmObj::Way(ref w) => Some(w),
_ => None,
}
}
/// Returns a reference to the `Relation` if `self` is a relation, otherwise returns `None`.
pub fn relation(&self) -> Option<&Relation> {
match *self {
OsmObj::Relation(ref r) => Some(r),
_ => None,
}
}
}
/// An OpenStreetMap node. See the [OpenStreetMap wiki page about
/// node](http://wiki.openstreetmap.org/wiki/Node) for more
/// information.
#[derive(Debug, PartialEq, Eq, PartialOrd, Ord, Clone, Hash, Serialize, Deserialize)]
pub struct Node {
/// The id of the node.
pub id: NodeId,
/// The tags of the node.
pub tags: Tags,
/// The latitude in decimicro degrees (10⁻⁷ degrees).
pub decimicro_lat: i32,
/// The longitude in decimicro degrees (10⁻⁷ degrees).
pub decimicro_lon: i32,
}
impl Node {
/// Returns the latitude of the node in degrees.
pub fn lat(&self) -> f64 {
self.decimicro_lat as f64 * 1e-7
}
/// Returns the longitude of the node in degrees.
pub fn lon(&self) -> f64 {
self.decimicro_lon as f64 * 1e-7
}
}
/// An OpenStreetMap way. See the [OpenStreetMap wiki page about
/// way](http://wiki.openstreetmap.org/wiki/Way) for more
/// information.
#[derive(Debug, PartialEq, Eq, PartialOrd, Ord, Clone, Hash, Serialize, Deserialize)]
pub struct Way {
/// The id of the way.
pub id: WayId,
/// The tags of the way.
pub tags: Tags,
/// The ordered list of nodes as id.
pub nodes: Vec<NodeId>,
}
impl Way {
/// Returns true if the way is
/// [open](http://wiki.openstreetmap.org/wiki/Way#Open_way).
pub fn is_open(&self) -> bool {
!self.is_closed()
}
/// Returns true if the way is
/// [closed](http://wiki.openstreetmap.org/wiki/Way#Closed_way).
pub fn is_closed(&self) -> bool {
self.nodes.first() == self.nodes.last()
}
}
/// A reference to an object with a role. Used in the relation object.
#[derive(Debug, PartialEq, Eq, PartialOrd, Ord, Clone, Hash, Serialize, Deserialize)]
pub struct Ref {
/// Id of the member.
pub member: OsmId,
/// Role of the member.
pub role: String,
}
/// An OpenStreetMap relation. See the [OpenStreetMap wiki page about
/// relation](http://wiki.openstreetmap.org/wiki/Relation) for more
/// information.
#[derive(Debug, PartialEq, Eq, PartialOrd, Ord, Clone, Hash, Serialize, Deserialize)]
pub struct Relation {
/// The id of the relation.
pub id: RelationId,
/// The tags of the relation.
pub tags: Tags,
/// Members of the relation.
pub refs: Vec<Ref>,
}
impl ::std::convert::From<NodeId> for OsmId {
fn from(n: NodeId) -> Self {
OsmId::Node(n)
}
}
impl ::std::convert::From<WayId> for OsmId {
fn from(w: WayId) -> Self {
OsmId::Way(w)
}
}
impl ::std::convert::From<RelationId> for OsmId {
fn from(r: RelationId) -> Self {
OsmId::Relation(r)
}
}
impl ::std::convert::From<Node> for OsmObj {
fn from(n: Node) -> Self {
OsmObj::Node(n)
}
}
impl ::std::convert::From<Way> for OsmObj {
fn from(w: Way) -> Self {
OsmObj::Way(w)
}
}
impl ::std::convert::From<Relation> for OsmObj {
fn from(r: Relation) -> Self {
OsmObj::Relation(r)
}
}