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Implement PartialOrd for SQL Geometry type

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Originally implemented by @finnbear
This commit is contained in:
Tobie Morgan Hitchcock 2023-01-18 14:45:01 +00:00
parent 55dda013b6
commit 79d6107b4e
1 changed files with 91 additions and 5 deletions
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96
lib/src/sql/geometry.rs
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@ -7,7 +7,7 @@ use crate::sql::fmt::Fmt;
use crate::sql::serde::is_internal_serialization;
use geo::algorithm::contains::Contains;
use geo::algorithm::intersects::Intersects;
use geo::{LineString, Point, Polygon};
use geo::{Coord, LineString, Point, Polygon};
use geo::{MultiLineString, MultiPoint, MultiPolygon};
use nom::branch::alt;
use nom::bytes::complete::tag;
@ -21,7 +21,7 @@ use nom::sequence::preceded;
use serde::ser::SerializeMap;
use serde::{Deserialize, Serialize};
use std::cmp::Ordering;
use std::iter::FromIterator;
use std::iter::{once, FromIterator};
use std::{fmt, hash};
const SINGLE: char = '\'';
@ -39,9 +39,95 @@ pub enum Geometry {
}
impl PartialOrd for Geometry {
#[inline]
fn partial_cmp(&self, _: &Self) -> Option<Ordering> {
None
#[rustfmt::skip]
fn partial_cmp(&self, other: &Self) -> Option<Ordering> {
fn coord(coord: &Coord) -> (f64, f64) {
coord.x_y()
}
fn point(point: &Point) -> (f64, f64) {
coord(&point.0)
}
fn line(line: &LineString) -> impl Iterator<Item = (f64, f64)> + '_ {
line.into_iter().map(coord)
}
fn polygon(polygon: &Polygon) -> impl Iterator<Item = (f64, f64)> + '_ {
polygon.interiors().iter().chain(once(polygon.exterior())).flat_map(line)
}
fn multi_point(multi_point: &MultiPoint) -> impl Iterator<Item = (f64, f64)> + '_ {
multi_point.iter().map(point)
}
fn multi_line(multi_line: &MultiLineString) -> impl Iterator<Item = (f64, f64)> + '_ {
multi_line.iter().flat_map(line)
}
fn multi_polygon(multi_polygon: &MultiPolygon) -> impl Iterator<Item = (f64, f64)> + '_ {
multi_polygon.iter().flat_map(polygon)
}
match (self, other) {
//
(Self::Point(_), Self::Line(_)) => Some(Ordering::Less),
(Self::Point(_), Self::Polygon(_)) => Some(Ordering::Less),
(Self::Point(_), Self::MultiPoint(_)) => Some(Ordering::Less),
(Self::Point(_), Self::MultiLine(_)) => Some(Ordering::Less),
(Self::Point(_), Self::MultiPolygon(_)) => Some(Ordering::Less),
(Self::Point(_), Self::Collection(_)) => Some(Ordering::Less),
//
(Self::Line(_), Self::Point(_)) => Some(Ordering::Greater),
(Self::Line(_), Self::Polygon(_)) => Some(Ordering::Less),
(Self::Line(_), Self::MultiPoint(_)) => Some(Ordering::Less),
(Self::Line(_), Self::MultiLine(_)) => Some(Ordering::Less),
(Self::Line(_), Self::MultiPolygon(_)) => Some(Ordering::Less),
(Self::Line(_), Self::Collection(_)) => Some(Ordering::Less),
//
(Self::Polygon(_), Self::Point(_)) => Some(Ordering::Greater),
(Self::Polygon(_), Self::Line(_)) => Some(Ordering::Greater),
(Self::Polygon(_), Self::MultiPoint(_)) => Some(Ordering::Less),
(Self::Polygon(_), Self::MultiLine(_)) => Some(Ordering::Less),
(Self::Polygon(_), Self::MultiPolygon(_)) => Some(Ordering::Less),
(Self::Polygon(_), Self::Collection(_)) => Some(Ordering::Less),
//
(Self::MultiPoint(_), Self::Point(_)) => Some(Ordering::Greater),
(Self::MultiPoint(_), Self::Line(_)) => Some(Ordering::Greater),
(Self::MultiPoint(_), Self::Polygon(_)) => Some(Ordering::Greater),
(Self::MultiPoint(_), Self::MultiLine(_)) => Some(Ordering::Less),
(Self::MultiPoint(_), Self::MultiPolygon(_)) => Some(Ordering::Less),
(Self::MultiPoint(_), Self::Collection(_)) => Some(Ordering::Less),
//
(Self::MultiLine(_), Self::Point(_)) => Some(Ordering::Greater),
(Self::MultiLine(_), Self::Line(_)) => Some(Ordering::Greater),
(Self::MultiLine(_), Self::Polygon(_)) => Some(Ordering::Greater),
(Self::MultiLine(_), Self::MultiPoint(_)) => Some(Ordering::Greater),
(Self::MultiLine(_), Self::MultiPolygon(_)) => Some(Ordering::Less),
(Self::MultiLine(_), Self::Collection(_)) => Some(Ordering::Less),
//
(Self::MultiPolygon(_), Self::Point(_)) => Some(Ordering::Greater),
(Self::MultiPolygon(_), Self::Line(_)) => Some(Ordering::Greater),
(Self::MultiPolygon(_), Self::Polygon(_)) => Some(Ordering::Greater),
(Self::MultiPolygon(_), Self::MultiPoint(_)) => Some(Ordering::Greater),
(Self::MultiPolygon(_), Self::MultiLine(_)) => Some(Ordering::Greater),
(Self::MultiPolygon(_), Self::Collection(_)) => Some(Ordering::Less),
//
(Self::Collection(_), Self::Point(_)) => Some(Ordering::Greater),
(Self::Collection(_), Self::Line(_)) => Some(Ordering::Greater),
(Self::Collection(_), Self::Polygon(_)) => Some(Ordering::Greater),
(Self::Collection(_), Self::MultiPoint(_)) => Some(Ordering::Greater),
(Self::Collection(_), Self::MultiLine(_)) => Some(Ordering::Greater),
(Self::Collection(_), Self::MultiPolygon(_)) => Some(Ordering::Greater),
//
(Self::Point(a), Self::Point(b)) => point(a).partial_cmp(&point(b)),
(Self::Line(a), Self::Line(b)) => line(a).partial_cmp(line(b)),
(Self::Polygon(a), Self::Polygon(b)) => polygon(a).partial_cmp(polygon(b)),
(Self::MultiPoint(a), Self::MultiPoint(b)) => multi_point(a).partial_cmp(multi_point(b)),
(Self::MultiLine(a), Self::MultiLine(b)) => multi_line(a).partial_cmp(multi_line(b)),
(Self::MultiPolygon(a), Self::MultiPolygon(b)) => multi_polygon(a).partial_cmp(multi_polygon(b)),
(Self::Collection(a), Self::Collection(b)) => a.partial_cmp(b),
}
}
}