zawgl_core/model/
predicates.rs

1// MIT License
2// Copyright (c) 2022 Alexandre RICCIARDI
3// Permission is hereby granted, free of charge, to any person obtaining a copy
4// of this software and associated documentation files (the "Software"), to deal
5// in the Software without restriction, including without limitation the rights
6// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
7// copies of the Software, and to permit persons to whom the Software is
8// furnished to do so, subject to the following conditions:
9//
10// The above copyright notice and this permission notice shall be included in all
11// copies or substantial portions of the Software.
12//
13// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
14// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
15// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
16// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
17// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
18// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
19// SOFTWARE.
20
21use super::*;
22
23#[derive(Debug, Clone)]
24pub enum PropertyPredicate {
25    GreaterThan(PropertyValue),
26    GeaterOrEqualTo(PropertyValue),
27    LessThan(PropertyValue),
28    LessOrEqualTo(PropertyValue),
29    EqualTo(PropertyValue),
30    Contain(Vec<PropertyValue>),
31}
32
33#[derive(Debug, Clone)]
34pub struct NamedPropertyPredicate {
35    pub name: String,
36    pub predicate: PropertyPredicate,
37}
38
39impl NamedPropertyPredicate {
40    pub fn new(name: &str, predicate: PropertyPredicate) -> Self {
41        NamedPropertyPredicate{ name: String::from(name), predicate}
42    }
43}
44
45impl PropertyPredicate {
46    pub fn eval(&self, value: &PropertyValue) -> bool {
47        match &self {
48            PropertyPredicate::GreaterThan(v) => {
49                v < value
50            },
51            PropertyPredicate::GeaterOrEqualTo(v) => {
52                v <= value
53            },
54            PropertyPredicate::LessThan(v) => v > value,
55            PropertyPredicate::LessOrEqualTo(v) => v >= value,
56            PropertyPredicate::EqualTo(v) => v == value,
57            PropertyPredicate::Contain(list) => list.contains(value),
58        }
59    }
60}
zawgl_core/model/predicates.rs

zawgl_core/model/
predicates.rs
