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[rbdr/map] / Map / Logic / MapParser / Strategies / OpportunityParserStrategy.swift
1 /*
2 Copyright (C) 2024 Rubén Beltrán del Río
3
4 This program is free software: you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation, either version 3 of the License, or
7 (at your option) any later version.
8
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
13
14 You should have received a copy of the GNU General Public License
15 along with this program. If not, see https://map.tranquil.systems.
16 */
17 import Foundation
18
19 struct OpportunityParserStrategy: MapParserStrategy {
20 private let regex = MapParsingPatterns.opportunity
21
22 func canHandle(line: String) -> Bool {
23 let range = NSRange(location: 0, length: line.utf16.count)
24 let matches = regex.matches(in: String(line), options: [], range: range)
25 return matches.count > 0 && matches[0].numberOfRanges == 5
26 }
27
28 func handle(index: Int, line: String, vertices: [String: Vertex]) -> (Any.Type, Any) {
29 let range = NSRange(location: 0, length: line.utf16.count)
30 let matches = regex.matches(in: String(line), options: [], range: range)
31
32 let match = matches[0]
33 let multiplier = CGFloat(
34 String(line[Range(match.range(at: 3), in: line)!]) == "-" ? -1.0 : 1.0)
35 let vertex = String(line[Range(match.range(at: 2), in: line)!])
36 let opportunityString = String(line[Range(match.range(at: 4), in: line)!])
37 let opportunity = CGFloat(
38 truncating: NumberFormatter().number(from: opportunityString) ?? 0.0)
39
40 if let origin = vertices[vertex] {
41 let destination = CGPoint(
42 x: origin.position.x + opportunity * multiplier, y: origin.position.y)
43 let opportunity = Opportunity(id: index, origin: origin.position, destination: destination)
44 return (Opportunity.self, opportunity)
45 }
46
47 return (NSObject.self, NSObject()) // No matching object
48 }
49 }